The innermost membranous sac that surrounds and protects the developing embryo which is bathed in the AMNIOTIC FLUID. Amnion cells are secretory EPITHELIAL CELLS and contribute to the amniotic fluid.
The thin layers of tissue that surround the developing embryo. There are four extra-embryonic membranes commonly found in VERTEBRATES, such as REPTILES; BIRDS; and MAMMALS. They are the YOLK SAC, the ALLANTOIS, the AMNION, and the CHORION. These membranes provide protection and means to transport nutrients and wastes.
The outermost extra-embryonic membrane surrounding the developing embryo. In REPTILES and BIRDS, it adheres to the shell and allows exchange of gases between the egg and its environment. In MAMMALS, the chorion evolves into the fetal contribution of the PLACENTA.
The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).
A clear, yellowish liquid that envelopes the FETUS inside the sac of AMNION. In the first trimester, it is likely a transudate of maternal or fetal plasma. In the second trimester, amniotic fluid derives primarily from fetal lung and kidney. Cells or substances in this fluid can be removed for prenatal diagnostic tests (AMNIOCENTESIS).
The process of giving birth to one or more offspring.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
A disorder present in the newborn infant in which constriction rings or bands, causing soft tissue depressions, encircle digits, extremities, or limbs and sometimes the neck, thorax, or abdomen. They may be associated with intrauterine amputations.
The hormone-responsive glandular layer of ENDOMETRIUM that sloughs off at each menstrual flow (decidua menstrualis) or at the termination of pregnancy. During pregnancy, the thickest part of the decidua forms the maternal portion of the PLACENTA, thus named decidua placentalis. The thin portion of the decidua covering the rest of the embryo is the decidua capsularis.
A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).
The beginning of true OBSTETRIC LABOR which is characterized by the cyclic uterine contractions of increasing frequency, duration, and strength causing CERVICAL DILATATION to begin (LABOR STAGE, FIRST ).
Spontaneous tearing of the membranes surrounding the FETUS any time before the onset of OBSTETRIC LABOR. Preterm PROM is membrane rupture before 37 weeks of GESTATION.
A thin lining of closed cavities of the body, consisting of a single layer of squamous epithelial cells (MESOTHELIUM) resting on a thin layer of CONNECTIVE TISSUE, and covered with secreted clear fluid from blood and lymph vessels. Major serous membranes in the body include PERICARDIUM; PERITONEUM; and PLEURA.
A cellulose of varied carboxyl content retaining the fibrous structure. It is commonly used as a local hemostatic and as a matrix for normal blood coagulation.
Cold-blooded, air-breathing VERTEBRATES belonging to the class Reptilia, usually covered with external scales or bony plates.
A method for diagnosis of fetal diseases by sampling the cells of the placental chorionic villi for DNA analysis, presence of bacteria, concentration of metabolites, etc. The advantage over amniocentesis is that the procedure can be carried out in the first trimester.
Congenital structural deformities of the upper and lower extremities collectively or unspecified.
Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.
Labor and delivery without medical intervention, usually involving RELAXATION THERAPY.
A subdiscipline of human genetics which entails the reliable prediction of certain human disorders as a function of the lineage and/or genetic makeup of an individual or of any two parents or potential parents.
An educational process that provides information and advice to individuals or families about a genetic condition that may affect them. The purpose is to help individuals make informed decisions about marriage, reproduction, and other health management issues based on information about the genetic disease, the available diagnostic tests, and management programs. Psychosocial support is usually offered.
Diseases that are caused by genetic mutations present during embryo or fetal development, although they may be observed later in life. The mutations may be inherited from a parent's genome or they may be acquired in utero.
Detection of a MUTATION; GENOTYPE; KARYOTYPE; or specific ALLELES associated with genetic traits, heritable diseases, or predisposition to a disease, or that may lead to the disease in descendants. It includes prenatal genetic testing.
A imidazole derivative that is an agonist of ADRENERGIC ALPHA-2 RECEPTORS. It is closely-related to MEDETOMIDINE, which is the racemic form of this compound.
An agonist of RECEPTORS, ADRENERGIC ALPHA-2 that is used in veterinary medicine for its analgesic and sedative properties. It is the racemate of DEXMEDETOMIDINE.
Plastic surgery performed, usually by excision of skin, for the elimination of wrinkles from the skin.
Order of mammals whose members are adapted for flight. It includes bats, flying foxes, and fruit bats.
Acute VIRAL CNS INFECTION affecting mammals, including humans. It is caused by RABIES VIRUS and usually spread by contamination with virus-laden saliva of bites inflicted by rabid animals. Important animal vectors include the dog, cat, bat, fox, raccoon, skunk, and wolf.
The type species of LYSSAVIRUS causing rabies in humans and other animals. Transmission is mostly by animal bites through saliva. The virus is neurotropic multiplying in neurons and myotubes of vertebrates.

Prostaglandin endoperoxide H synthase mRNA expression in the human amnion and decidua during pregnancy and in the amnion at preterm labour. (1/868)

We have examined the expression of prostaglandin endoperoxide H synthase (PGHS) isoenzymes in the amnion and the decidua during gestation, and the abundance of PGHS mRNA in the amnion at idiopathic preterm labour. PGHS-1 and -2 mRNA abundance in the amnion, determined with ribonuclease protection assays, was significantly (P< 0.05) higher at term than earlier during pregnancy. In contrast, neither PGHS-1 and -2 mRNA values, nor PGHS-specific activity, measured with a cell-free assay, was different in the decidua at term as compared to earlier gestational ages. In individual term patients, PGHS-2 mRNA values in the amnion were positively correlated with PGHS-2 mRNA values in the chorion laeve. PGHS-1 and -2 mRNA abundance was higher (P < 0.05) in the amnion after idiopathic preterm labour than in the absence of labour at the same gestational age (28-35 weeks). Thus, PGHS-1 and -2 are induced in the amnion at term. Furthermore, amniotic PGHS-2 changes in co-ordination with PGHS-2 concentrations in the chorion laeve. PGHS is not induced in the decidua at term. Increased amniotic PGHS expression may contribute to the enhanced intrauterine prostaglandin synthesis before term labour. Both PGHS isoenzymes may participate in the increase of PGHS activity in the amnion at preterm birth.  (+info)

First-trimester cord entanglement in monoamniotic twins. (2/868)

OBJECTIVE: Monoamniotic twinning occurs in only 1% of twin pregnancies, but carries a high perinatal mortality rate. Early and reliable diagnosis is essential if attempts are to be made to reduce the complication rate. We report color Doppler demonstration of cord entanglement in the first trimester, which is diagnostic of monoamnionicity. METHODS: Two patients with twin pregnancies were examined in the first trimester with pulsed and color Doppler insonation of their umbilical arteries. RESULTS: Cord entanglement was suspected and proved by demonstrating differing fetal heart rate patterns in the same direction on umbilical artery Doppler analysis of a common mass of cord vessels. Following appropriate counselling, medical amnioreduction was induced at 20 weeks of gestation to reduce fetal movements and worsening cord entanglement. Delivery was by elective Cesarean section at 32 weeks' gestation and monoamnionicity was confirmed. CONCLUSION: We report a new sign for the demonstration of monoamnionicity in twin pregnancies in the first trimester. This should improve the reliability of early diagnosis, but further studies are required to confirm that, if cord entanglement occurs, it is usually present by the end of the first trimester.  (+info)

Tissue plasminogen activator and its receptor in the human amnion, chorion, and decidua at preterm and term. (3/868)

The plasminogen activator system consists of two proteins: tissue plasminogen activator (tPA) and urokinase plasminogen activator (uPA), which act upon their specific receptors to generate plasmin from plasminogen located on the cell surface. Plasmin then acts directly and indirectly to degrade the components of the extracellular matrix (ECM). This process is likely to be important in the normal turnover of the ECM of fetal membranes and in its premature weakening in preterm premature rupture of the fetal membranes. Quantitative Northern analysis and in situ hybridization have shown that the decidua expresses mRNA for tPA. However, the immunolocalized tPA protein was most strongly associated with the amnion and chorion, as was its receptor annexin II, suggesting that the amnion and chorion are the targets for decidual tPA. At term, decidual tPA expression was unaffected by labor, and the tPA receptor was elevated both before and after labor. At preterm, the converse was found: decidual tPA expression was significantly (p < 0. 05) up-regulated by labor, but the tPA receptor was not. The results suggest that the generation of plasmin at term would be controlled by an increased concentration of the tPA receptor in the amnion and chorion, whereas at preterm a pathological increase in plasmin would be generated by an overexpression of tPA, initiated by labor.  (+info)

Conjunctival epithelial cell differentiation on amniotic membrane. (4/868)

PURPOSE: Amniotic membrane (AM)-reconstructed conjunctival surfaces recover the normal epithelial phenotype with a significantly higher cell density than the control. The present study was undertaken to examine how AM modulates rabbit conjunctival epithelial cell differentiation. METHODS: Rabbit conjunctival epithelial cells (RCEs) were cultured on the basement membrane side of dispase-pretreated AM, with or without seeding rabbit conjunctival fibroblasts (RCFs) on the stromal side. After 7 to 12 days, half of the cultures were raised to the air-liquid interface, and the remainder stayed submerged. A small group of air-lifted cultures containing RCFs was treated with retinoic acid. After 1, 2, and 4 weeks, cultures were terminated and processed for immunostaining with antibodies directed against distinct types of mucins (SMC and AM3), glycocalyx (AMEM2), keratin K3 (AE5), and K12 (AK2). Additionally, western blot analysis was performed for K3 keratin expression. Ultrastructural changes were evaluated by transmission electron microscopy. RESULTS: In general, RCEs grown on AM were uniformly small, negative to AE5 and AK2 antibodies, and positive to AMEM2 and ASPG1 antibodies. Epithelial stratification and cell polarity with prominent microvilli, tight junctions, and hemidesmosomes were more pronounced in air-lifted cultures. RCEs cocultured with RCFs showed scattered AM3-positive goblet cells, which were not increased by retinoic acid. CONCLUSIONS: RCEs cultured on AM primarily exhibit a nongoblet conjunctival epithelial phenotype. Epithelial stratification and cell polarity, features essential for epithelial differentiation, are promoted by air-lifting. This culture model will be useful for studying how growth and differentiation of conjunctival epithelial cells can be modulated further.  (+info)

Expression of cyclo-oxygenase types-1 and -2 in human fetal membranes throughout pregnancy. (5/868)

Human labour is associated with increased prostaglandin synthesis within the fetal membranes. We have studied the expression of the two isoforms of the central prostaglandin synthetic enzyme, cyclo-oxygenase (COX-1 and COX-2), in human fetal membranes throughout pregnancy, at mRNA, protein and activity levels. COX-1 mRNA expression was low in human amnion and chorion-decidua and did not change with gestational age. COX-2 mRNA expression in fetal membranes increased with gestational age, with significant up-regulation prior to the onset of labour and in association with labour. Protein concentrations of COX-1 did not change, whilst concentrations of COX-2 increased from the first to the third trimester. COX activity increased with gestational age and in association with labour, although prostaglandin production in fetal membranes collected after labour was reduced, suggesting reduced substrate supply. These data suggest that it is up-regulation of COX-2, rather than of COX-1, which mediates increased prostaglandin synthesis within the fetal membranes at term. Much of the increase in COX-2 expression precedes the onset of labour, suggesting that it is a cause, rather than a consequence, of labour.  (+info)

Amnion-derived cells express intercellular adhesion molecule-1: regulation by cytokines. (6/868)

We have examined the expression of the intercellular adhesion molecule-1 (ICAM-1) mRNA in primary and established amnion-derived cell cultures and regulation of this expression by tumour necrosis factor-alpha (TNF-alpha) and interleukin (IL)-1beta. TNF-alpha (50 ng/ml) and IL-1beta (1.0 ng/ml) induced 18- and 11-fold increases respectively in expression of the ICAM-1 mRNA in WISH cells (an amnion epithelium-derived cell line). The increase was detectable within one hour of treatment and peaked by two hours. The protein synthesis inhibitor, cycloheximide (10 microg/ml) did not inhibit this induction. Increased levels of ICAM-1 protein were detected in the cells within 4 h after initiation of treatment with either cytokine. By 16 h of treatment with IL-1beta or TNF-alpha ICAM-1 reached 40 and 73 pg/microg cellular protein, representing 6- and 11-fold stimulations respectively. In primary amnion cells, basal expression of ICAM-1 mRNA was undetectable. However, TNF-alpha (50 ng/ml) induced ICAM-1 mRNA within two hours, peak expression being reached between four and eight hours after initiation of treatment. The present report demonstrates for the first time that amnion derived cells can express ICAM-1 and, further, that this expression is regulated by pro-inflammatory cytokines. This has implications for the amnion as a possible source for soluble ICAM-1, for this gene product as a marker for preterm labour, and for participation of the amnion, additional to its reported secretory role, in inflammatory processes of the fetal membranes.  (+info)

Oxytocin receptor expression in human term and preterm gestational tissues prior to and following the onset of labour. (7/868)

Oxytocin receptor (OTR) mRNA expression has previously been demonstrated in human myometrium, decidua, chorion and amnion but the effect of gestational age and the onset of labour has not been determined in these individual tissues. Spatial OTR mRNA expression was examined by in situ hybridization and ligand binding was confirmed using autoradiography with the iodinated oxytocin antagonist d(CH2)5[Tyr(Me)2,Thr4,Tyr-NH29]-vasotocin (125I-OTA). Tissue was collected at term (>37 weeks of gestation) or preterm (24-36 weeks of gestation) caesarean section and classified as labour (contractions every 5 min associated with cervical dilatation) or non-labour. OTR mRNA expression was measured as optical density units from autoradiographs. There was a highly significant (P<0.001) effect of tissue type on expression of OTR mRNA with expression greatest in myometrium, low in decidua and chorion and not detected in placenta. Similar results were obtained with the 125I-OTA-binding studies, indicating that the message was translated. Amnion had an apparently high level of both hybridization and 125I-OTA binding in some samples, but a lack of specificity prevented quantification of the signal in this tissue type. Term myometrium (labour and non-labour) had significantly higher (P<0.01) OTR mRNA expression than preterm myometrium, but there was no further increase in mRNA concentration associated with labour onset. In contrast, 125I-OTA binding in myometrium was already high at 33 weeks and did not increase further either later in pregnancy or with labour. In decidua there was no effect of gestational age or labour onset on OTR mRNA expression or 125I-OTA binding. In summary, OTR mRNA expression in the myometrium increased in late pregnancy whereas decidual expression was much lower and did not rise at term.  (+info)

Human RNA-specific adenosine deaminase ADAR1 transcripts possess alternative exon 1 structures that initiate from different promoters, one constitutively active and the other interferon inducible. (8/868)

RNA-specific adenosine deaminase (ADAR1) catalyzes the deamination of adenosine to inosine in viral and cellular RNAs. Two size forms of the ADAR1 editing enzyme are known, an IFN-inducible approximately 150-kDa protein and a constitutively expressed N-terminally truncated approximately 110-kDa protein. We have now identified alternative exon 1 structures of human ADAR1 transcripts that initiate from unique promoters, one constitutively expressed and the other IFN inducible. Cloning and sequence analyses of 5'-rapid amplification of cDNA ends (RACE) cDNAs from human placenta established a linkage between exon 2 of ADAR1 and two alternative exon 1 structures, designated herein as exon 1A and exon 1B. Analysis of RNA isolated from untreated and IFN-treated human amnion cells demonstrated that exon 1B-exon 2 transcripts were synthesized in the absence of IFN and were not significantly altered in amount by IFN treatment. By contrast, exon 1A-exon 2 transcripts were IFN inducible. Transient transfection analysis with reporter constructs led to the identification of two functional promoters, designated PC and PI. Exon 1B transcripts were initiated from the PC promoter whose activity in transient transfection reporter assays was not increased by IFN treatment. The 107-nt exon 1B mapped 14.5 kb upstream of exon 2. The 201-nt exon 1A that mapped 5.4 kb upstream of exon 2 was initiated from the interferon-inducible PI promoter. These results suggest that two promoters, one IFN inducible and the other not, initiate transcription of the ADAR1 gene, and that alternative splicing of unique exon 1 structures to a common exon 2 junction generates RNA transcripts with the deduced coding capacity for either the constitutively expressed approximately 110-kDa ADAR1 protein (exon 1B) or the interferon-induced approximately 150-kDa ADAR1 protein (exon 1A).  (+info)

TY - JOUR. T1 - Nrf2 activation inhibits effects of thrombin in human amnion cells and thrombin-induced preterm birth in mice. AU - Chigusa, Yoshitsugu. AU - Kishore, Annavarapu Hari. AU - Mogami, Haruta. AU - Word, Ruth Ann. PY - 2016/6/1. Y1 - 2016/6/1. N2 - Context: Nrf2 is a key transcription factor that modulates cell defense mechanisms against endogenous and exogenous stress. Previously, we reported that thrombin increased matrix metalloproteinases and prostaglandin synthesis in human amnion mesenchymal cells. Objective: We sought to determine whether activation of Nrf2 alters the effect of thrombin on prostaglandin synthesis, protease activation, and cytokine release in human amnion. Furthermore, we analyzed the effect of Nrf2 activation on thrombin-induced preterm labor in mice. Design: Primary human amnion mesenchymal cells and pregnant mice were employed to investigate the effect of Nrf2 on thrombin-induced inflammation and preterm birth. Setting: This was a laboratory-based study ...
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1. Norwitz ER, Starkey PM, Lopez Bernal A. Prostaglandin D2 production by term human decidua: cellular origins defined using flow cytometry. Obstet. Gynecol. 1992;80:440-5 2. Nancy P, Erlebacher A. T cell behavior at the maternal-fetal interface. Int.J.Dev.Biol. 2014;58:189-98 3. Romero R, Munoz H, Gomez R, Parra M, Polanco M, Valverde V. et al. Increase in prostaglandin bioavailability precedes the onset of human parturition. Prostaglandins Leukot. Essent. Fatty Acids. 1996;54:187-91 4. Olson DM, Mijovic JE, Sadowsky DW. Control of human parturition. Semin. Perinatol. 1995;19:52-63 5. Gibb W. The role of prostaglandins in human parturition. Ann. Med. 1998;30:235-41 6. Ledingham MA, Thomson AJ, Greer IA, Norman JE. Nitric oxide in parturition. BJOG. 2000;107:581-93 7. Yallampalli C, Dong YL, Gangula PR, Fang L. Role and regulation of nitric oxide in the uterus during pregnancy and parturition. J. Soc. Gynecol. Investig. 1998;5:58-67 8. Goldenberg RL, Hauth JC, Andrews WW. Intrauterine infection ...
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Purpose: : To evaluate the efficacy of early sutureless amniotic membrane transplantation in the management of severe bacterial keratitis to reduce pain, inflammation, and haze, and to promote healing. Methods: : A non-comparative case series including 3 eyes of 3 consecutive patients with severe bacterial keratitis exhibiting persistent epithelial defect/ulcer were retrospectively reviewed following early sutureless amniotic membrane transplantation via ProKeraTM together with selective topical antibiotics and preservative-free steroid. Pain relief, inflammation, haze, and corneal epithelial healing were monitored. Results: : ProKeraTM was inserted once in one eye, twice in the other two eyes. Pain was significantly relieved, and inflammation was markedly reduced in all cases. The corneal epithelial defect and stromal ulceration rapidly healed while visual acuity improved in two out of the 3 eyes. Conclusions: : Temporary sutureless amniotic membrane transplantation via ProKeraTM allows easy ...
TY - JOUR. T1 - Evidence for active acetylcholine metabolism in human amniotic epithelial cells. T2 - Applicable to intracerebral allografting for neurologic disease. AU - Sakuragawa, Norio. AU - Misawa, Hidemi. AU - Ohsugi, Keiko. AU - Kakishita, Kouji. AU - Ishii, Takashi. AU - Thangavel, Ramasamy. AU - Tohyama, Jun. AU - Elwan, Mohamed. AU - Yokoyama, Yasunobu. AU - Okuda, Osamu. AU - Arai, Hajime. AU - Ogino, Ikuko. AU - Sato, Kiyoshi. PY - 1997/8/22. Y1 - 1997/8/22. N2 - Human amniotic epithelial (HAE) cells have been used for allotransplantation in patients with lysosomal storage disease due to lack of expression of HLA antigens. Previously, we have reported the expression of differentiation markers for both neural stem cells, and neuron and glial cells. In the present study, we investigated the presence of choline acetyltransferase (CHAT) and acetylcholine (ACh) in HAE cells using different experimental approaches. Cultured HAE cells showed strong immunoreactivity against ChAT antibody. ...
Human Amniotic Epithelial Cell Lysate https://www.sciencepro.com.br/produtos/sc-7116 https://www.sciencepro.com.br/@@site-logo/logo-novo.png ...
TY - JOUR. T1 - Inherent propensity of amnion-derived mesenchymal stem cells towards endothelial lineage. T2 - Vascularization from an avascular tissue. AU - Warrier, S.. AU - Haridas, N.. AU - Bhonde, R.. PY - 2012/10. Y1 - 2012/10. N2 - One of the most pressing problems in injury is wound healing and blood vessel formation. The amniotic membrane is important in clinical applications as it is pro-angiogenic, anti-fibrotic and anti-scarring and has low immunogenicity. In this study, we characterized amniotic membrane mesenchymal stem cells (AMMSCs) by their trademark mesenchymal stem cell (MSC) signature and profiled for embryonic pluripotency markers namely alkaline phosphatase, Oct4, Sox2, Nanog, SSEA3 and 4, and Klf4 by RT-PCR and nuclear localization of Oct4 and Nanog by immunocytochemistry. The amnion, although avascular, contains pro-angiogenic factors such as type I, III, IV and V collagen, laminin, and fibronectin in the extra cellular matrix. We, therefore, hypothesized that AMMSCs is ...
Purpose: : To examine the characteristics of iris pigment epithelial (IPE) cells cultured on amniotic membrane (AM) and to determine whether subretinal transplantation of this IPE cell sheet can protect photoreceptor cell loss in dystrophic Royal College of Surgeons (RCS) rats. Methods: : Human and rat IPE cells were cultured on the basement membrane side of dispase treated AM. After 2 weeks of seeding, the expression of several genes participate in the function of differentiated retinal pigment epithelial (RPE) cells was evaluated using real time PCR and Western blotting. Ultrastructural changes were evaluated using transmission electron microscopy. The IPE cell sheet cultured on AM was transplanted into the subretinal space of 4-week-old RCS rats, and the eyes were analyzed histologically at 12 weeks after grafting. The effect of transplantation of IPE cell sheet on the visual function was estimated by optokinetic reflex. Results: : IPE cells cultured on AM exhibited ultrastructural epithelial ...
TY - JOUR. T1 - The effects of thrombin and cytokines upon the biomechanics and remodeling of isolated amnion membrane, in vitro. AU - Kumar, D.. AU - Schatz, F.. AU - Moore, R. M.. AU - Mercer, B. M.. AU - Rangaswamy, N.. AU - Mansour, J. M.. AU - Lockwood, C. J.. AU - Moore, J. J.. PY - 2011/3. Y1 - 2011/3. N2 - Abruption-induced thrombin generation and inflammation/infection induced cytokine production have both been associated with fetal membrane (FM) weakening and preterm premature rupture of the fetal membranes (PPROM). Using our in vitro model system we have demonstrated that thrombin, and separately the cytokines, tumor necrosis factor-alpha (TNFα) and interleukin-1-beta (IL-1β), remodel and weaken full thickness FM. Additionally, we have reported that the anti-oxidant and NFκB inhibitor, alpha-lipoic acid (LA), blocks these thrombin and cytokine induced effects. The purpose of these studies was to determine whether thrombin and cytokines directly weaken the amnion membrane (AM), the ...
TY - JOUR. T1 - Denuded human amniotic membrane seeding bone marrow stromal cells as an effective composite matrix stimulates axonal outgrowth of rat neural cortical cells in vitro. AU - Liang, Hong Sheng. AU - Liang, Peng. AU - Xu, Ye. AU - Wu, Jia Ning. AU - Liang, Tao. AU - Xu, Xiao Ping. AU - Liu, En Zhong. PY - 2009/9. Y1 - 2009/9. N2 - Background: Previous studies have shown that axonal outgrowth in the damaged central nervous system is closely related to the local microenvironment. Transplantation of bone marrow stromal cells (BMSC) or BMSC with some biomaterials has been used to treat various central nervous system diseases with some success. In the current study, we investigated if BMSC on denuded human amniotic membrane (DhAM) as a composite matrix could stimulate axonal outgrowth or not. Method: After completely removing the cells on the amniotic membrane with a tryptic and mechanical approach, we seeded BMSC on it. The MTS was applied to test the cytotoxicity of DhAM compared with ...
Amniotic membrane, or amnion, is the innermost layer of the placenta and consists of a thick basement membrane and an avascular stromal matrix. Amniotic membrane transplantation has been used as a graft or as a dressing in different surgical subspecialties. In the field of ophthalmology, it is used broadly 1) to reconstruct the ocular surface after various procedures; 2) as a graft for ocular surface melts; and 3) as a bandage to promote healing in cases of persistent epithelial defects or ocular surface inflammation. All of these indications make use of amniotic membranes ability to promote healing.[1]
Amniotic membrane graft to conjunctival flap in treatment of non-viral resistant infectious keratitis: a randomised clinical study ...
Objective: To evaluate the use of hypothermically stored human amniotic membrane for cartilage repair in adult sheep. Studies show that human amniotic membrane contains pluripotent mesenchymal stem cells that can be influenced to produce chondrocytes. It is unknown if human amniotic cells can produce hyaline-like cartilage. This study evaluates the use of hypothermically stored amniotic membrane (HSAM) to fill chondral defects in a sheep model. We hypothesized HSAM would fill defects with hyaline-like cartilage with chondrocytes populating the matrix. One sheep was used as a control, and four sheep received amniotic membrane. Two of these sheep were used as a normal control comparison. A 1 cm2 defect was created on the trochlear grove in all specimens. Each membrane was sized and laid over with the stromal layer facing the subchondral bone and covered with Fibrin sealant. The knees were harvested at five months and underwent morphological, histological, and immunohistological evaluation based on the
1. John, T. Human amniotic membrane transplantation: past, present, and future. Ophthalmol Clin North Am. 2003;16(1):43-65. 2. Davis JW. Skin transplantation with a review of 550 cases at the Johns Hopkins Hospital. Johns Hopkins Med J. 1910;15:307-396. 3. Sabella N. Use of fetal membranes in skin grafting. Med Records NY. 1913;83:478-480. 4. Stern M. The grafting of preserved amniotic membrane to burned and ulcerated surfaces, substituting skin grafts. JAMA. 1913;60(13):973-974. 5. De Roth A. Plastic repair of conjunctival defects with fetal membranes. Arch Ophthalmol. 1940;23(3):522-525. 6. Internal records, Surgical Biologics, Inc, Kennesaw, GA. Accessed August 23, 2012. 7. Cornwell KG, Landsman A, James KS. Extracellular matrix biomaterials for soft tissue repair. Clin Podiatr Med Surg. 2009;26(4):507-523. 8. Bose B. Burn wound dressing with human amniotic membrane. Ann R Coll Surg Engl. 1979;61(6):444-447. 9. Quinby WC, Hoover HC, Scheflan M, et al. Clinical trials of amniotic membranes in ...
TY - JOUR. T1 - Paradox of glucocorticoid-induced cytosolic phospholipase A2 group IVA messenger RNA expression involves glucocorticoid receptor binding to the promoter in human amnion fibroblasts. AU - Guo, Chunming. AU - Yang, Zhen. AU - Li, Wenjiao. AU - Zhu, Ping. AU - Myatt, Leslie. AU - Sun, Kang. PY - 2008/1. Y1 - 2008/1. N2 - Glucocorticoids (GCs) are well-known anti-inflammatory drugs inhibiting prostaglandin production. Paradoxically, GCs are reported to stimulate cytosolic phosphoplipase A2 group IVA (PLA2G4A) and prostaglandin-endoperoxide synthase 2 (PTGS2) expression in human amnion fibroblasts. This study was designed to examine the molecular mechanisms underlying glucocorticoid-induced PLA2G4A expression in human amnion fibroblasts. Our data showed that cortisol (0.01∼1 μM) increased PLA2G4A mRNA level in a dose-dependent manner in human amnion fibroblasts, which was blocked by glucocorticoid receptor antagonist RU486 (1 μM) as well as by the mRNA transcription inhibitor ...
A reconstituted collagen membrane from human amnion has been investigated as a source of collagen matrix, which could be used as a substratum for culturing human fibroblasts. The suitability of pepsin-solubilized reconstituted human amniotic membrane, before and after cross-linking with chitosan, as a dermal matrix for culturing fibroblast was assessed by morphologic, physicochemical, cytotoxic and histochemical methods. Measurement of thermodynamic behaviour, by differential scanning calorimetric (DSC) and thermogravimetric analysis (TGA), and tensile strength suggested that the cross-linked membrane had sufficient elasticity to serve as an efficient dermal substrate for in vitro culture of fibroblasts. Fibroblasts cultured on the chitosan cross-linked collagen membrane had good adherence, retaining their morphology as indicated by microscopic analysis. Proliferation of fibroblasts, observed on this membrane affirms its non-toxic nature. These results support the application of reconstituted ...
Increasing evidence has shown that mesenchymal stem cells (MSCs) yield a favorable therapeutic benefit for thermal burn skin wounds. Human amniotic MSCs (hAMSCs) derived from amniotic membrane have multilineage differentiation, immunosuppressive, and anti-inflammatory potential which makes them suitable for treating skin wounds. However, the exact effects of hAMSCs on the healing of thermal burn skin wounds and their potential mechanisms are not explored. hAMSCs were isolated from amniotic membrane and characterized by RT-PCR, flow cytometry, immunofluorescence, and tumorigenicity test. We assessed the effects of hAMSCs and hAMSC conditional medium (CM) on wound healing in a deep second-degree burn injury model of mice. We then investigated the biological effects of hAMSCs and hAMSC-CM on the apoptosis and proliferation of heat stress-injured human keratinocytes HaCAT and dermal fibroblasts (DFL) both in vivo and in vitro. Next, we explored the underlying mechanisms by assessing PI3K/AKT and GSK3β/β
TY - GEN. T1 - Prediction of stem cell differentiation in human amniotic membrane images using machine learning. AU - Obritzberger, Lisa. AU - Borgmann, Daniela. AU - Schaller, Susanne. AU - Dorfer, Viktoria. AU - Lindenmair, Andrea. AU - Wolbank, Susanne. AU - Hennerbichler, Simone. AU - Redl, Heinz. AU - Winkler, Stephan. PY - 2015. Y1 - 2015. N2 - It has been shown that it is possible to differentiate viable amniotic membrane towards osteogenic lineage, i.e. bony tissue. This process of mineralization may take several weeks and can show different manifestations per sample. The tissue can only be used, when the mineralization process is advanced in a certain degree. Therefore, a forecast of the development of mineralization would be helpful to save time and resources. This paper shows how a prediction on the development of mineralization can be made by using several image processing techniques, machine learning methods, and hybrid ensembles of machine learning algorithms.. AB - It has been ...
References: 1. Niknejad H, Peirovi H, Jorjani M, et al. Properties of the Amniotic Membrane For Potential Use in Tissue Engineering. European Cells and Materials. 2008(15):88-89. 2. Gruss J, Jirsch D. Human amniotic membrane: a versatile wound dressing. CMA Journal.1978(18);1237-1254. 3. Data on File, Nutech Medical. 4. Diaz-Prado A, Rendal-Vasques E, Muinos-Lopez E, et al. Potential use of the human amniotic membrane as a scaffold in articular cartilage repair. Cell Tissue Bank. 2010;11:183-195. 5. Garcia D, Longo U, Vaquero J, Forriol F, Loppini M, Khan W, Denaro V. Amniotic Membrane Transplant for Articular Cartilage Repair: An Experimental Study in Sheep. Current Stem Cell Research & Therapy. 2014;9(6);1-7. 6. Cooke, M, Tan, E, Mandrycky, C, He, H, OConnell, J, Tseng, S, Comparison Of Cryopreserved Amniotic Membrane And Umbilical Cord Tissue With Dehydrated Amniotic Membrane/Chorion Tissue, Journal Of Wound Care 2014, 23(10): 465-76.. Document No.: Affinity-1101 Revision: Initial Release ...
Synonyms for amnions in Free Thesaurus. Antonyms for amnions. 2 synonyms for amnion: amnios, amniotic sac. What are synonyms for amnions?
Objective: The aim of this research was to present the results of patients with the indication for treatment of cornea by amniotic membrane transplant over a four-year period, from 2012 to 2015. Study design: Retrospective cohort study. Participants and methods: The study included patients with pathological changes in the cornea, who have undergone amniotic membrane transplantation over the four-year period from 2012 to 2015, at the Department of Ophthalmology, University Hospital Center Osijek. The data for each patient were taken on the following: the indication for the amniotic membrane transplant, clinical findings on the cornea and visual acuity before and after the procedure, the possible reoperation, as well as the demographic characteristics. Results: Out of the total of 11 patients, 9 were women. Inflammation was the most common cause of clinical findings, in 5 patients. Infection was not found in 8 patients. Two patients complained about postoperative pain. Subjective improvement month ...
Wound healing is a complex pathophysiological process that involves a variety of cells and cytokines. In this study, we found that local injection of human amnion mesenchymal stem cells into wounds in rats could promote wound healing. Therefore, we hypothesized that the exosomes of human amnion mesenchymal stem cells contain substances that regulate the migration of epidermal cells. It has been reported that miR-135a is involved in cell migration and transformation. However, there have been no reports of its function in skin wound healing. To test this hypothesis, we injected exosomes overexpressing miR-135a directly into the wound margin. In addition, we tested the migration of BJ cells with overexpression or knockdown of miR-135a in vitro. Additionally, Western blot analysis was used to detect the expression of fibroblast migration-associated proteins after treatment with miR-135a overexpression or knockdown. MiR-135a significantly promoted wound healing compared to the control treatment. Western blot
Results Culture-expanded amnion-derived adherent cells expressed mesenchymal stem cell markers and HLA-ABC molecules and could differentiate into osteoblasts, adipocytes and chondrocyte-like cells, indicating that the cells have the characteristics of mesenchymal stem cells. The Lin-CD34+ cells purified from the frozen umbilical cord blood were strongly positive for HLA-ABC, and contained a large number of hematopoietic stem cells. When the Lin-CD34+ cells were cultured on the autologous (MHC-matched) or MHC-mismatched amnion-derived adherent cells in short-term assays (hematopoietic stem cell-proliferation) and long-term culture-initiating cell assays, greater expansion of the Lin-CD34+ cells was observed in the MHC-matched combination than in MHC-mismatched combinations. The concentration of granulocyte-macrophage colony-stimulating factor in the culture supernatants of the long-term culture-initiating cell assays was significantly higher in the MHC-matched combination than in MHC-mismatched ...
619PRTHuman Immunodeficiency Virus 1Arg Lys Lys Arg Arg Gln Arg Arg Arg1 529PRTHuman Immunodeficiency Virus 2Lys Lys Lys Lys Lys Lys Lys Lys Lys1 539PRTHuman Immunodeficiency Virus 3Arg Arg Arg Arg Arg Arg Arg Arg Arg1 54281PRTHomo sapiens 4Met Asn Gly Glu Glu Gln Tyr Tyr Ala Ala Thr Gln Leu Tyr Lys Asp1 5 10 15Pro Cys Ala Phe Gln Arg Gly Pro Ala Pro Glu Phe Ser Ala Ser Pro 20 25 30Pro Ala Cys Leu Tyr Met Gly Arg Gln Pro Pro Pro Pro Pro Pro His 35 40 45Pro Phe Pro Gly Ala Leu Gly Ala Glu Gln Gly Ser Pro Pro Asp Ile 50 55 60Ser Pro Tyr Glu Val Pro Pro Leu Ala Asp Asp Pro Ala Val Ala His65 70 75 80Leu His His His Leu Pro Ala Gln Leu Ala Leu Pro His Pro Pro Ala 85 90 95Gly Pro Phe Pro Glu Gly Ala Glu Pro Gly Val Leu Glu Glu Asn Arg 100 105 110Val Gln Leu Pro Phe Pro Trp Met Lys Ser Thr Lys Ala His Ala Trp 115 120 125Lys Gly Gln Trp Ala Gly Gly Ala Tyr Ala Ala Glu Pro Glu Glu Asn 130 135 140Lys Arg Thr Arg Thr Ala Tyr Thr Arg Ala Gln Leu Leu Glu Leu Glu145 150 155 160Lys Glu Phe Leu Phe Asn Lys Tyr ...
TY - JOUR. T1 - Human amnion mesenchyme harbors cells with allogeneic T-cell suppression and stimulation capabilities. AU - Parolini, Ornella. AU - Magatti, Marta. AU - De Munari, Silvia. AU - Vertua, Elsa. AU - Gibelli, Lucia. AU - Wengler, Georg S.. PY - 2008. Y1 - 2008. N2 - Cells derived from the amniotic membrane of human placenta have been receiving particular attention because of their stem cell potentiality and immunomodulatory properties, which make them an attractive candidate source for cell therapy approaches. In this study, we isolated cells from the mesenchymal region of amnion and identified two subpopulations discordant for expression of the HLA-DR, CD45, CD14, and CD86 cellular markers. We therefore refer to the unfractionated cell population derived from this region as amniotic mesenchymal tissue cells (AMTC). We studied the suppressive and stimulatory characteristics of the unfractionated, HLA-DR-positive, and HLA-DR-negative AMTC populations and demonstrated that all three ...
Biobusiness Grant Recipient: John Schorgl, BA. Grant Period: 2017-2018. Award Value: $100,000. Site: Peytant Solutions, Inc.. Project Summary:. Peytant Solutions is developing a human amnion tissue cover scaffold, called the AmnioStent™, for the treatment of malignant airway strictures. The goal of this grant is to conduct sterilization and biocompatibility validation testing of AmnioStent per the FDA Guidance for Premarket Notifications of Esophageal and Tracheal Prostheses and preparation of the FDA 510k application. ...
TY - JOUR. T1 - Fetal rabbit gastric epithelial cells cultured on floating collagen gels. AU - Logsdon, C. D.. AU - Bisbee, C. A.. AU - Rutten, M. J.. AU - Machen, T. E.. PY - 1982/3. Y1 - 1982/3. N2 - Cells were isolated from ∼ 30 d fetal rabbit stomachs and cultured on floating collagen gels. Electron microscopy showed monolayers in which only one cell type persisted. These columnar cells were joined at apical borders by tight junctions and contained an extensive endoplasmic reticular network with an occasional intracellular canaliculus. They also occasionally contained what appeared to be secretory granules (mucus?), and therefore had some characteristics of all the cell types of the intact fetal stomachs, which showed oxyntic, mucous, and undifferentiated cells. In Ussing chambers with Ringers solution on both sides, cultures developed transepithelial potential (potential difference [PD], mV, mucosa ground)=13, resistance (resistance [R], Ω-cm2)=285, and short-circuit current (Isc, ...
c. chorion and amnion. recent questions recent answers. Another form of this procedure is incision and drainage also known as clinical lancing which is a procedure used to drain the pus from an infected portion of the body. b. amnion. ANS: A REF: 326 OBJ: 3 TOP: Neonatology Disease and Disorder Terms Built from Word Parts 27. Amniocentesis is the medical term meaning surgical puncture of the amnion. According to Dictionary.com, the term cervix refers to the neck or any neck-like part of an organ. Traditional sutures or staples, however, are usually removed after about a week or two. Q 75 . J Am Geriatr Soc. Sign up here. The midline incision is the preferred incision due to adequate exposure of intra-abdominal contents, quick access, and relative ease to perform.1-3 Laparotomies are associated with a number of complications like wound dehiscence, wound infection and incisional hernias.1,4,5 Midline laparotomy incision is generally chosen by surgeons because of its ease, speed and excellent ...
Maternal immunoglobulin-G (IgG) is known to be transported across the placental syncytiotrophoblast during the period when the human fetus is incapable of manufacturing these defensive molecules. In this study we investigated the possible role of the amniochorion, that surrounds the amniotic cavity in which the fetus lies, in the transfer of immunoglobulin. Endogenous IgG was localised in the amniochorion by confocal immunofluorescence microscopy and by ultrastructural labelling of ultrathin frozen tissue sections using the protein A-gold technique. Immunoreactivity was identified in the extracellular matrix tissues and necrotic amniotic epithelial cells. Healthy amniotic epithelial cells and cytotrophoblast cells of the chorion laeve were devoid of endogenous IgG. These results suggest a possible nonspecific paracellular transport pathway between cytotrophoblast cells, which may conceivably contribute to the acquisition of passive immunity by the fetus, and offer a rational explanation for the ...
Shortly after the establishment of the circulation of the yolk-sac the folds of the amnion meet and coalesce above the embryo (Fig. 114, 3 and 4, am). After this the inner or true amnion becomes severed from the outer or false amnion, though the two sometimes remain connected by a narrow stalk. The space between the true and false amnion is a continuation of the body cavity. The true amnion consists of a layer of epiblastic epithelium and generally also of somatic mesoblast, while the false amnion consists as a rule of epiblast only; though it is possible that in some cases (the rabbit ?) the mesoblast may be continued along its inner face. Before the two limbs of the amnion are completely severed the epiblast of the umbilical vesicle becomes separated from the subjacent mesoblast and hypoblast of the vesicle (Fig. 114, 3), and, together with the false amnion (sh) with which it is continuous, forms a complete lining for the inner face of the zona radiata. The space between this membrane and the ...
Human amnion as a temporary biologic barrier after hysteroscopic lysis of severe intrauterine adhesions pilot study J Minim Invasive Gynecol. 2010 Sep-Oct;17(5):605-11. doi: [...] ...
Preterm White Matter Brain Injury Is Prevented by Early Administration of Umbilical Cord Blood Cells Researchers assessed the neuroprotective effects of umbilical cord blood cells and optimal administration timing in a fetal sheep model of preterm brain injury. [Exp Neurol] Abstract Amnion-Epithelial-Cell-Derived Exosomes Demonstrate Physiologic State of Cell under Oxidative Stress Investigators determined amnion epithelial cells (AECs) exosome characteristics and their cargo reflected the physiologic status of the cell of origin and suggests that AEC-derived exosomal p38 MAPK plays a major role in determining the fate of pregnancy. [PLoS One] Full Article Reconstitution of Immune Cell in Liver and Lymph Node of Adult- and Newborn-Engrafted Humanized Mice The authors compared reconstitution levels in a variety of immunological tissues, including the lymph node and liver, between mice engrafted intravenously as adults and intrahepatically in newborns. CD34+ cells were enriched from cord blood and ...
2. A Ocular surface reconstruction with allolimbal transplantation and use of two membranes. The inner 9-mm disc acts as a graft and the outer larger membrane as a patch. S. Dua). B The outer membrane has cut through sutures and retracted, exposing the inner membrane. e. 5 Clinical Studies and Outcomes (Definitions of Success and Grading of Disease Severity) A B membrane was intended as a patch and acted as such for the expected duration but the PED did not heal. When the above criteria were applied to 74 procedures involving use of the amniotic membrane, failure of the procedure was observed in 44 % of patients where the membrane was used in the presence of stem cell deficiency, in 33 % of procedures where the membrane was used in the absence of stem cell deficiency and in 44 % of patients where the membrane was used for conjunctival reconstruction. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. References 1. Anderson DF, Ellies P, Pires RT, Tseng SC (2001) Amniotic membrane transplantation for partial ...
Moreover, the reduced proportion of Treg cells in EAU rats was restored upon hAEC treatment during disease development (Fig. therapeutic strategy is urgently required. The present study investigated the therapeutic efficacy of human amniotic epithelial cells (hAECs) on autoimmune uveitis in a rat model. Herein, experimental autoimmune uveitis (EAU) was induced in rats via a subcutaneous injection of interphotoreceptor retinoid-binding protein. EAU rats were treated with hAECs or the vehicle solution via a subretinal injection on day 0 and day 6 after immunization, and rats were sacrificed on day 12 and day 18 for further analysis. The pathological development of EAU was evaluated by slit lamp microscopy. Immune cell infiltration and retinal structure damage were examined by histological examination of hematoxylin TGR-1202 and eosin (H&E) and immunofluorescence staining. T-cell subsets were detected by flow cytometry, and the levels of inflammatory cytokines were quantified by enzyme-linked ...
The basic helix-loop-helix (bHLH) transcription factor, Hand1, plays an important role in the development of the murine extra-embryonic trophoblast cell lineage. In the present study, we have analysed the expression of Hand1 in human extra-embryonic cell types and determined its binding specificity and transcriptional activity upon interaction with different class A bHLH factors. Northern blotting and in situ hybridization showed that Hand1 mRNA is specifically expressed in amnion cells at different stages of gestation. Accordingly, we demonstrate that the protein is exclusively produced in the amniotic epithelium in vivo and in purified amnion cells in vitro using a novel polyclonal Hand1 antiserum. Reverse transcriptase-PCR and immunohistochemical staining of blastocysts revealed the production of Hand1 mRNA and polypeptide in the trophectodermal cell layer. In the presence of E12/E47, Hand1 stimulated the transcription of luciferase reporters harbouring degenerate E-boxes, suggesting that ...
Amnion: Amnion,, in reptiles, birds, and mammals, a membrane forming a fluid-filled cavity (the amniotic sac) that encloses the embryo. The amniotic sac and the fluid it contains are
Abstract: The purpose of this study was to investigate the relationship between cell apoptosis and wide-band electromagnetic pulse (WEMP) irradiation parameters and to provide experimental data to establish the biophysics damage model for WEMP. Cell counting kit-8 was used to detect the cell viability changes after WEMP irradiation and flow cytometry assay was used to detect cell apoptosis after irradiation under different WEMP irradiation parameters. Under experimental conditions, field strength and number of pulses were observed to be the main factors that increased the apoptotic rate of human amniotic epithelial cells. Specifically, electric field intensity and number of pulses were determined to be the primary and secondary factors, respectively. The two factors were confirmed to interact with each other, that is, a logistic function was found to exist between the apoptotic rate and electric field strength.. Key words: Wide-band electromagnetic pulse,Apoptosis,Variance analysisCLC, TL71, ...
TY - JOUR. T1 - Fine structure and immunofluorescent studies of the wish cell line. AU - Meek, William D.. AU - Davis, Walter L.. PY - 1986/12/1. Y1 - 1986/12/1. N2 - Morphological studies of the WISH cell line reveal an epithelioid cell type with some characteristics of both the original human amnion epithelium and a transformed state. WISH cells have a cytoplasm filled with microtubules; however, actin filament bundles are few, with actin localized at areas of cell contact and arranged diffusely through the cytoplasm, as viewed by indirect immunofluorescence. Fingerlike projections or short filopodia are observed connecting cells that grow in a closely apposed monolayer. Other surface features, as viewed by scanning electron microscopy, include microvilli and blebs. Transmission electron microscopy shows that WISH cultures consist of light or dark cells with organelles that include lipid droplets, abundant free ribosomes, tubular mitochondria, lysosomes, annulate lamellae, rough endoplasmic ...
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Placenta, Cord, Amnion, Chorion Model - $89 A great teaching tool, this model of the placenta, cord, amnion, and chorion is perfect for childbirth education courses. Visit Cascade HealthCare Products secure Website to view our complete selection of educational materials for childbirth educators and professionals or to place an order.
ABSTRACT BACKGROUND: The human placenta-derived amniotic mesenchymal stem cells (hAMSCs) exhibit immunomodulatory, partially pluripotent, and precardiac properties. They express the c-kit cardiac progenitor marker and are readily reprogrammed to iPSCs (MiPSCs). Dual contrast manganese-enhanced MRI (MEMRI) and delayed enhancement MRI (DEMRI) has been developed to evaluate the cardiac restorative effects of hAMSCs, c-kit+ hAMSCs, and MiPSCs.. HYPOTHESIS: MEMRI and DEMRI will identify the mechanism of myocardial restoration.. METHODS: SCID-beige mice underwent LAD ligation and received 250,000 cells or normal saline (NS) in the peri-infarct region. The mice were divided into 4 arms: (1) NS (control group, n=7), (2) hAMSC (n=6), (3) c-kit+ hAMSC group (n=2), and (4) MiPSC group (n=3). The hAMSCs were transfected with a luciferase reporter gene. Cardiac MRI measured the scar, viable myocardium, and LVEF at weeks 1, 2, and 4. Bioluminescence imaging (BLI) was also performed and blood was drawn at week ...
One of the most established roles of oxytocin (OT) is in inducing uterine contractions and labour. Apart from contractions, our recent study have shown that OT can also activate pro-inflammatory pathways in both human myometrial and amnion cells which suggests the pro-inflammatory role of OT should be taken into account when developing tocolytics targeting the OT/OT receptor (OT/OTR) system. The OTR antagonist, Atosiban, is currently used therapeutically for the treatment of PTL. We have previously shown that Atosiban fails to inhibit the pro-inflammatory effects of OT in human amnion, and Atosiban alone activates NF-κB and MAPKs thus upregulating downstream pro-labour genes. In contrast to our findings with Atosiban, the presence of the orally active OTR antagonist, Nolasiban, reduced the effect of OT on NF-κB and p38 kinase activation both in myometrial and amnion cells. Consistent with the activation of these inflammatory mediators, OT led to increases in the expression of COX-2 and ...
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Define amnion: a thin membrane forming a closed sac about the embryos or fetuses of reptiles, birds, and mammals and containing the amniotic fluid
The amniotic sac, commonly called the bag of waters, sometimes the membranes, is the sac in which the fetus develops in amniotes. It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth. The inner of these fetal membranes, the amnion, encloses the amniotic cavity, containing the amniotic fluid and the fetus. The outer membrane, the chorion, contains the amnion and is part of the placenta. On the outer side, the amniotic sac is connected to the yolk sac, the allantois and, via the umbilical cord, to the placenta. Amniocentesis is a medical procedure where fluid from the sac is sampled to be used in prenatal diagnosis of chromosomal abnormalities and fetal infections. The amniotic cavity is the closed sac between the embryo and the amnion, containing the amniotic fluid. The amniotic cavity is formed by the fusion of the parts of the amniotic fold, which first makes its appearance at the cephalic extremity, and subsequently at ...
Research supported by The Eye Cancer Foundation has proved greater efficacy of this new technique in recreating the outer surface of the eye and inner surface of the eyelids. As published in the American Journal of Ophthalmology on November 2018, tumors of the conjunctiva and eyelids were surgically removed, then amniotic membranes from donor human placentas were sewn into the defects to recreate a normal ocular and inner eyelid surface. Thus, amnion can provide a foundational platform for new cells to grow and flourish. In this case series, super thick amniotic membrane grafts (AMGs) were found to facilitate the healing of wounds. How exactly does graft thickness affect the success of treatment? Well, the greater thickness means it is more easily sewn into the affected area, and. also helps the grafts to remain several weeks after placement. Thicker grafts are less likely to tear, rupture, or dissolve during the postoperative period. Most importantly, following treatment with ST-AMG, every ...
Human amniotic membrane is a unique collagenous tissue derived from the innermost submucosa of the placenta, the area in which the human fetus grows and develops within the mothers uterus. Human amniotic membrane is composed of a single epithelium layer, a thick basement membrane, and an avascular stromal matrix.. ...
Looking for online definition of amniotic epithelium in the Medical Dictionary? amniotic epithelium explanation free. What is amniotic epithelium? Meaning of amniotic epithelium medical term. What does amniotic epithelium mean?
In this study we aimed to set up an in vitro culture of the rabbit amnion in order to support in vivo fetal membrane healing capacity following fetoscopy. Fetal membranes were collected from a mid- gestational rabbit, and cultured on collagen support material for 14 days. 34 rabbits at 22 - 23 days gestational age ( GA) underwent fetoscopy. The entry site was randomly allocated to 4 closure technique study groups: group I, human amnion membrane ( n = 23); group II, collagen foil ( n = 16); group III, collagen plug ( n = 19), and group IV, collagen plug with cultured amnion cells ( n = 19). In all groups membrane access sites were additionally sealed with fibrin sealant, and the myometrium was closed with sutures. Fetal survival, amnion membrane integrity, and the presence of amniotic fluid were evaluated at 30 days GA. Cultures showed good survival in the collagen support material. Increased cellularity, survival and proliferations were observed. The amnion at the access site resealed in 58 - ...
Ocular surface is composed of corneal and conjunctival epithelial cells. Normal cornea is essential for normal vision. Defects in renewal and repair of ocular surface as a result of limbal stem cell deficiency are now known to cause varying ocular surface morbidity including persistent photophobia, repeated and persistent surface breakdown and overt conjunctivalisation of the cornea. Restoring ocular health in these eyes has traditionally been frustrating. Ex vivo cultured limbal epithelial stem cells have been used successfully to treat limbal stem cell deficiency. Ex-vivo limbal stem cell allograft transplantation is achieved by harvesting limbal corneal tissue from donor eyes (either matched living relatives or cadaveric donors). The donor stem cells are obtained by excising a small area of the conjunctiva at the limbus and are a minor procedure. The tissue so obtained is then grown in tissue culture and once the cells have multiplied sufficiently, small sheets are transplanted on to the ...
TY - JOUR. T1 - Inhibition of lysyl oxidase by cortisol regeneration in human amnion. T2 - Implications for rupture of fetal membranes. AU - Liu, Chao. AU - Guo, Chunming. AU - Wang, Wangsheng. AU - Zhu, Ping. AU - Li, Wenjiao. AU - Mi, Yabing. AU - Myatt, Leslie. AU - Sun, Kang. N1 - Funding Information: This work was supported by National Natural Science Foundation of China Grants 81330018 and 81270704 and National Key Basic Research Program of China Grant 2014CB943302. Disclosure Summary: The authors have no conflict of interest to disclose. Publisher Copyright: Copyright © 2016 by the Endocrine Society.. PY - 2016. Y1 - 2016. N2 - The mechanisms underlying human parturition are still not understood, yet we need this knowledge to combat preterm birth. Fetal membranes express abundant 11 β-hydroxysteroid dehydrogenase 1 (11β-HSD1), which converts inert cortisone to active cortisol. We examined whether cortisol regeneration in the amnion might play a role in human parturition through ...
TY - JOUR. T1 - Vesicular uptake of macromolecules by human placental amniotic epithelial cells. AU - Sharshiner, Rita. AU - Brace, Robert A.. AU - Cheung, Cecilia Y.. N1 - Funding Information: This work was supported by NIH grant 5R01 HD061541 from the National Institute of Child Health and Human Development; Shared Instrumentation Grant Number S10-RR023432 from the National Center for Research Resources; Oregon Health and Science University Core Pilot Grant; and Oregon Health and Science University Division of Maternal Fetal Medicine. The contents of this study are solely the responsibility of the authors and do not necessarily represent the official view of NCRR or NIH/NICHD. Publisher Copyright: © 2017 Elsevier Ltd Copyright: Copyright 2018 Elsevier B.V., All rights reserved.. PY - 2017/9. Y1 - 2017/9. N2 - Introduction Studies in animal models have shown that unidirectional vesicular transport of amniotic fluid across the amnion plays a primary role in regulating amniotic fluid volume. Our ...
Members of the Vampire Facelift® provider group, can login to the members site to see more specifics of how to use Vampire Amnion™ to rejuvenate the hands and face and to receive special pricing from the largest supplier of quality amnion in the U.S.. Over 1,000 research papers about amnion (click),-. ONLY live birth amnion is used (no aborted fetal tissue ...
Methods This retrospective study included 200 patients, above 8 years of age, with clinically diagnosed unilateral total limbal stem cell deficiency due to ocular surface burns treated between 2001 and 2010. A small limbal biopsy was obtained from the unaffected eye. The limbal epithelial cells were expanded ex vivo on human amniotic membrane for 10-14 days using a xeno-free explant culture system. The resulting cultured epithelial monolayer and amniotic membrane substrate were transplanted on to the patients affected eye. Postoperative corneal surface stability, visual improvement and complications were objectively analysed. ...
Aim. This project studies the regeneration of epidermal and dermal components with the use human Whartons Jelly Mesenchymal Cells (WJ-MSCs) on a scaffold of Freeze Dried Human Amniotic Membrane (FD-HAM) and Cryopreserved Human Amniotic Membrane (CP-HAM) in porcine excisional wound model. Methods. Fresh AM was harvested from seronegative term pregnant mothers undergoing elective Caesarean section deliveries under sterile conditions. The membrane was de-cellularised and either cryopreserved (CP-HAM) or freeze dried (FD-HAM) for storage. Commercially available WJ-MSCs were seeded on the different forms of the decellularised membrane. Six, 5×5 cm cutaneous wounds using a dermatome at 0.8mm setting, 2cm apart will be created on the dorsum of 20-25kg Great White pigs on either side of the spine under general anaesthesia. The treatments (Wound control, WJ-MSCs alone, FD-HAM, CP-HAM, FD-HAM + WJ-MSCs, CP-HAM+ WJ-MSCs) were allocated by Latin squares to randomise the application. A barrier dressing ...
Our purpose was to evaluate the diagnostic value of three-dimensional (3 D) CT surface reconstruction in spinal fractures in comparison with axial and reformatted images. A total of 50 patients with different CT-proven spinal fractures were analysed retrospectively. Based on axial scans and reformatted images, the spinal fractures were classified according to several classifications as Magerl for the thoraco-lumbar and lower cervical spine by one radiologist. Another radiologist performed 3 D CT surface reconstructions with the aim of characterizing the different types of spinal fractures. A third radiologist classified the 3 D CT surface reconstruction according to the Magerl classification. The results of the blinded reading process were compared. It was checked to see in which type and subgroup 3 D surface reconstructions were helpful. Readers one and two obtained the same results in the classification. The 3 D surface reconstruction did not yield any additional diagnostic information concerning type
Koizumi, N and Rigby, H and Fullwood, N J and Koizumi, K and Joussen, A M and Kociok, N (2004) Comparison of intact and denuded amniotic membrane as a substrate for human limbal epithelial cell culture. Investigative Ophthalmology and Visual Science, 45. U336-U336. ISSN 0146-0404 Full text not available from this repository ...
Approaches providing the positioning of human amniotic membrane (HAM) within the intra-articular space of arthritic TMJs have never been investigated. This contrasts with the increasing amount of evidence suggesting the potential positive effects of HAM on a number of surgical conditions, even included the interpositional arthroplasty for TMJ ankylosis. Thus, the possible usefulness of HAM to restore joint functions in severely damaged TMJs could be hypothesized. Based on these premises, the clinical research question Is human amniotic membrane positioning effective to reduce symptoms and restore jaw function in patients with severe inflammatory-degenerative disorders of the temporomandibular joint? has been addressed by performing a systematic review of the literature ...
Limbal stem cells were obtained by excising a small area of the conjunctiva at the limbus. The limbal tissue was exposed, for 5-10 min, to Dispase II (1.2 U/mL in Mg2+ and Ca2+-free HBSS) at 37°C in a humidified environment containing 5% CO2. The tissue was rinsed with DMEM/F12 containing FBS (10%) and cut into cubes of approximately 1-2 mm2. The limbal epithelial cells were cultured on the basement membrane side of denuded human amniotic membranes (AMs) and cultured in DMEM/Hams F-12 (1:1) supplemented with FBS (5%), DMSO (0.5%), hEGF (2 ng/mL), insulin (5 μg/mL), transferrin (5 μg/mL), selenium (5 ng/mL), hydrocortisone (0.5 μg/mL), cholera toxin (30 ng/mL), gentamicin (50 μg/mL), and amphotericin B (1.25 μg/mL). Cultures were incubated in a humidified incubator with 5% CO2. The cultures were maintained for 3 weeks and the medium was replaced every 2 days. ...
Introduction: Human amniotic membrane (AM) is the innermost layer of placenta and is composed of three distinct strata, namely single epithelial layer, a thick basement membrane and avascular stroma. AM has been widely adopted as a biomaterial in tissue engineering and surgical reconstructions, since it promotes wound healing and epithelialization, has low immunogenicity, reduces inflammation and scarring, and was also shown to possess anti-cancer properties (1). We have shown that AM promotes formation of highly differentiated urothelium, in particular when urothelial cells are cultured on AM stromal side (2). Although AM stroma scaffold allows establishment of differentiated urothelium, its orientation probably does not favour AM integration into surrounding tissue, if applied in vivo. Therefore, we established an in vitro AM model which would allow incorporation of fibroblasts into the AM stroma as well as promote urothelial differentiation.. Materials and Methods: Porcine bladder fibroblasts ...
During the pathogenesis of Lyme disease, Borrelia burgdorferi spreads hematogenously from the site of a tick bite to several tissues throughout the body. The specific mechanism of spirochete emigration is presently unknown. Using cultured human umbilical vein endothelial cells, we found that Borrelia burgdorferi bound to the endothelial cells and to the subendothelial matrix. Low passage isolates adhered 22-30-fold greater than a strain maintained in culture continuously. Spirochete binding to subendothelial matrix was inhibited 48-63% by pretreatment of the matrix with anti-fibronectin antiserum. Spirochete migration across endothelial monolayers cultured on amniotic membrane was increased when the monolayers were damaged by chemical or physical means. Electron microscopic examination of spirochete-endothelial interactions demonstrated the presence of spirochetes in the intercellular junctions between endothelial cells as well as beneath the monolayers. Scanning electron microscopy identified a ...
The gestational sac is the large cavity of fluid surrounding the embryo. During early embryogenesis it consists of the extra-embryonic coelom, also called the chorionic cavity. The gestational sac is normally contained within the uterus. It is the only available structure that can be used to determine if an intrauterine pregnancy exists until the embryo is identified. On obstetric ultrasound, the gestational sac is a dark (anechoic) space surrounded by a white (hyperechoic) rim. The gestational sac is spherical in shape, and usually located in the upper part of the fundus of the uterus. By approximately 9 weeks of gestational age, the amniotic sac has expanded to occupy the majority of the volume of the gestational sac, eventually expanding to reduce the extraembryonic coelom to a thin layer between the amnion membrane and the mesoderm. By then, the gestational sac is usually simply called the amniotic sac. During embryogenesis, the extraembryonic coelom (or chorionic cavity) that ...
The human tissue inhibitor of metalloproteinases (TIMP) is a glycoprotein with a molecular weight of 28,000. It appears to be ubiquitous in human mesoderm tissues and has previously been shown to be identical to the collagenase inhibitor isolated from human skin fibroblasts. TIMP inhibits type I- and IV-specific collagenases and other neutral metalloen-doproteinases that may be responsible for the degradation of extracellular matrix in tumor cell metastasis. In this work we have utilized recombinant human TIMP (rTIMP) obtained by expression of its cDNA gene (Carmichael et al., Proc. Natl. Acad. Sci. USA, 83: 2407, 1986). The rTIMP is shown to have similar inhibition properties as natural TIMP against human skin fibroblast collagenase. In an in vitro amnion invasion assay system, rTIMP inhibited the invasion of B16-F10 murine melanoma cells through the human amniotic membrane at an identical concentration to that reported previously for natural TIMP. The mechanism by which rTIMP inhibits amniotic ...
Patient I am an Australian whose daughter contacted Dr. Maskin as soon as we heard about him and that he was performing a procedure for extreme Dry Eye Syndrome, called Amniotic Membrane Transplantation, and then made all the arrangements to have a consultation with him within 2 and ½ weeks.. I have Sjogrens Syndrome and for 8 years I have been trying to get help and relief from the acute debilitating pain, burning irritation and discomfort of always feeling as though I have a large piece of foreign matter in my eyes, as well as though grit has been thrown into my eyes and they were being rubbed with sandpaper.. Sometimes I felt as though my left eye, particularly, was being pierced with a sharp instrument and it was being twisted to cause the maximum pain. Repeatedly, I would say to the doctors here: I cant believe that my eyes feel like this-yet you cant see anything.. I had tried every type of drops, ointment, lubricants, antibiotic drops for eyes, steroid drops and autologous ...
56 patients with age ranging from 22 to 96 years (mean: 58.6+/-20.4 years) were admitted for a period of 2 to 34 days (mean: 10+/-6.6 days). Corneal scrapes were positive in 27/54 patients. Commonly identified organisms were Staphylococcus aureus (n=7), Moraxella (n=6) Herpes Simplex Virus (n=5) and Pseudomonas (n=4). Fluoroquinolone monotherapy was used as primary treatment in 83%, which was modified in 6% based on microbial profile. Tectonic grafts were required for 4 patients; amniotic membrane transplantation and corneal glue for 2 patients each; three underwent temporary tarsorraphy; one aphakic patient required AC tap and intravitreal antibiotics; one underwent evisceration ...
Recent years have seen considerable advances in our knowledge of the biology and properties of stem/progenitor cells isolated from placental tissues. This has encouraged researchers to address the potential effects of these cells in animal models of different diseases, resulting in increasing expectations regarding their possible utility for cell-based therapeutic applications. This rapidly evolving research field is also enriched by studies aimed at expanding the use of the whole amniotic membrane (AM), a well-known surgical material, for pathological conditions other than those tested so far and for which clinical applications already exist. In this review, we provide an update on studies that have been performed with placenta-derived cells and fragments of the entire AM to validate their potential clinical applications in a variety of diseases, in particular those associated with degenerative processes induced by inflammatory and fibrotic mechanisms. We also offer, as far as possible, insight ...
Acellular amniotic membrane (AAM) is a biodegradable and biocompatible natural that has a wide range of applications in the field of pharmaceutics, biomedical, chemical and cosmetics industry. One of the most interesting characteristics of AAM is its antibacterial and anti-inflammatory, anti-angiogenic, anti-fibrosis activity is an attractive approach for treating inflammatory disorders, wounds, and burns. The isolated use of AAM may not be sufficient to produce an adequate anti-inflammatory and antimicrobial effect to fulfill different purposes, has attracted considerable attention that has similar properties to the native tissues. This mini-review offers a focuses on modern aspects of the biomaterials, growth factors, biocompatibility, and acellular matrix which are the basic elements for use in the tissue regeneration and replacement after an injury.
A HUMAN O\£UM NINE TO TEN DAYS OLD ova, the diameter of the disc would be 0.117 mm.; that of the disc in the 11.5 day Hertig-Rock ovum is o.I38 mm. At the edge of the disc the ectodermal cells suddenly change to the flattened cells comprising the side walls and roof of the amniotic cavity, a feature which supports the views of Ramsey and Heuser and Streeter that in primates the ectodermal layer of the disc is formed from the inner cell mass, whereas the amnion is derived from the mesoblast, which in its turn has been delaminated from the cytotrophoblast. In the present specimen the roof of the amnion is deficient in part ; here the cavity is roofed over by cytotrophoblast and transition cells between cytotrophoblast and amniotic cells are present. Definite yolk sac has not yet been formed. DISCUSSION AND COMPARISON wrrrr OTHER EARLY HUMAN OVA. The smaller dimensions of the chorionic vesicle and of the embryonic disc, and the lesser degree of enlargement of the endometrial sinusoids in the ...
The role of chemical potentials in surface reconstructions is examined and shown to be crucial for binary semiconductor srufaces such as GaAs(111)2×2. We predict that under As-rich conditions a new model, the As triangle, is the lowest-energy geometry, whereas the Ga-vacancy model is appropriate for Ga-rich conditions. A change in the relative chemical potential of Ga and As should produce a phase transition between the two structures. ...
Amniox launching NEOXTM Grafts at the American College of Foot and Ankle Surgeons Annual Scientific Conference Amniox Medical, Inc., a leader in Amnion
Explaination: Explanation: Placenta and chorion compose the fetal-maternal junction. The former is a trophoblast derivative and the latter is a derivative of both trophoblast and extraembryonic mesoderm. The other extraembryonic tissues such as the amnion, the yolk sac and the allantois are derived from the inner cell mass. Among them, the yolk sac and the allantois are endodermal derivatives whereas the amnion is an ectodermal derivative ...
Free, official info about 2015 ICD-9-CM diagnosis code 762.8. Includes coding notes, detailed descriptions, index cross-references and ICD-10-CM conversion info.
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This stock medical exhibit features normal fetal membrane anatomy during pregnancy. It reveals a sagittal cut-away view of a full term pregnant abdomen with fetus shown in-utero. A blue colored membranous capsule is shown surrounding the fetus. Additionally, a detailed section through the membrane identifies and labels the amnion, chorion, uterus and decidua.
This stock medical exhibit features normal fetal membrane anatomy during pregnancy. It reveals a sagittal cut-away view of a full term pregnant abdomen with fetus shown in-utero. A blue colored membranous capsule is shown surrounding the fetus. Additionally, a detailed section through the membrane identifies and labels the amnion, chorion, uterus and decidua.
Amniotic fluid, known as the patron saint of the baby, can play a role in alleviating external shocks, stabilizing the temperature in the uterus, inhibiting bacteria and reducing infection, lubricating after breaking water and disinfection of the birth canal. In fact, there is a word amniotic fluid in medicine, which is translated into Chinese as amniotic fluid for short. The origin of amniotic fluid has the meaning of nourishing and Yang, but its implication has the meaning of nurturing, sunshine and growth, but in fact, the most appropriate and scientific explanation is the amniotic fluid. < p > < p > because the fetus is wrapped in the amniotic membrane and grows and develops through the nutrient fluid in the amnion. Therefore, the clear amniotic fluid also represents that the baby can absorb more and better nutrition. < / P > < p > although I always want to have a natural birth, for the sake of the health and safety of the baby, a cesarean section was carried out in advance one ...
A human heteroploid epithelial-like cell line, designated as C-SPT, was recovered from one of several lots of human WI-38 fibroblast-like diploid cells that lacked evidence of Regan isozyme in early passages. In later passages with the growth of C-SPT cells, high activity of Regan type of alkaline phosphatase appeared as judged by l-phenylalanine inhibition, heat stability, and immunoelectrophoresis. The C-SPT cells appeared to be the progeny of an unidentified source contaminant rather than of transformed WI-38 cells. Comparative enzymological and immunological studies with HeLa and WISH cells confirmed the presence of Regan type of alkaline phosphatase as a characteristic of HeLa and established its presence in WISH cells. However, the specific activity of Regan isozyme in WISH cells was only 3 to 6% of that in C-SPT cells. The HeLa cells exhibited 33% of C-SPT level on the initial passage level studied, which after further cell passage declined to 8%. A HeLa clone was isolated showing very ...
My doc excised two pterygium from the same eye (one located toward the inner part nasal and one located toward the outer part tempor
Dr Ming Wang is a world-know eye surgeon with specialties in 3D bladeless all-laser LASIK and laser cataract. Dr wang is also a philanthropist and community leader.
The mechanisms responsible for the onset of labor in women are not completely understood. Growing evidence suggests that bacterial products such as endotoxin could stimulate monocytes or macrophages to produce inflammatory cytokines such as IL-1, TNF, IL-6 and IL-8, which in turn stimulate prostaglandin biosynthesis by amnion, chorion and decidua and result in the onset of labor. Amniotic fluid IL-6 could be a sensitive indicator for prospective diagnosis of acute histologic chorioamnionitis, so amniotic fluid IL-6 is considered as an important cytokine. IL-13 and TIMP-3, recently described, have been known to relate to IL-6. IL-13, a novel T-helper cell lymphokin, has been shown to upregulate IL-6 production in keratinocytes, endothelial cells and mesothelial cells, whereas it downregulates IL-6 production in human monocytes. Tissue inhibitor of metalloproteinase-3(TIMP-3), new type distinct from TIMP-1 and TIMP-2, is known to be stimulated by IL-6. In this study , we examined C3H pregnant mice ...
A typical human childbirth will begin with the onset of contractions of the uterus. The frequency and duration of these contractions varies with the individual. The onset of labour may be sudden or gradual. A gradual onset with slow cervical change towards 3 cm (just over 1 inch) dilation is referred to as the latent phase. A woman is said to be in active labour when contractions have become regular in frequency (3-4 in 10 minutes) and about 60 seconds in duration. The now powerful contractions are accompanied by cervical effacement and dilation greater than 3cm. The labour may begin with a rupture of the amniotic sac, the paired amnion and chorion (breaking of the water). The contractions will accelerate in frequency and strengthen. In the transition phase from 8cm-10cm (3 or 4 inches) of dilation, the contractions often come every two minutes are typically lasting 70 - 90 seconds. Transition is often regarded as the most challenging and intense for the mother. Some mothers say things ...
FIG 11.1 Incision line opening. (A) Incision line opening occurring after implant placement. (B) Post allograft incision line opening. (C) Membrane graft dehiscence. (D) Block graft with fixation screw exposure. The prevalence of ILO has been shown in studies to range from 4.6% to 40% around submerged implants.1,2 In a study by Mendoza, 37% had no…
Fetus of a cow, with its membrane. Labels: a, placenta; b, chorion with the allantois adherent to its inner surface; c, amnion seen through outer covering; d, fetus seen through its covering.
Use this economical female pelvis model on its own or with Fetal Model, Perineal Cloth Model, and Placenta/Cord/Amnion/Chorion Model to help expectant parents understand the process of labor and birth.
A human embryo of the fourth week. I, the chorion; 3, part of the amnion; 4, umbilical vesicle with its long pedicle passing into the abdomen; 7, the heart; 8, the liver; 9, the visceral arch destined to form the lower jaw, beneath which are two other visceral arches separated by the branchial clefts; 10, rudiment of the upper extremity, 11, that of the lower extremity; 12, the umbilical cord; 15, the eye; 16, the ear; 17, cerebral hemispheres; 18, optic lobes, corpora quadrigemina.. ...
Anatomical structure in a pouch. Gestational sac: membranes enveloping the foetus or embryo. Composed by the fusion of chorion and amnion.
Anatomical structure in a pouch. Gestational sac: membranes enveloping the foetus or embryo. Composed by the fusion of chorion and amnion.
This line was originally thought to be derived from normal amnion, but was subsequently found, based on isoenzyme analysis, HeLa marker chromosomes, and DNA fingerprinting, to have been established via HeLa cell contamination.
The amniotic fluid exists within the amnion, and is where the fetus is able to grow and develop. The swelling of the amnion and ... It is closest to the mother and physically supports the much thinner amnion. The chorion is the last and outermost of the ... The inner membrane is the amnion. It is in direct contact with the amniotic fluid, which surrounds the fetus. ... Chorioamnionitis, also known as intra-amniotic infection (IAI), is inflammation of the fetal membranes (amnion and chorion), ...
Embry later became the leader of the indie-rock group Amnion, helping write the group's songs. In February 2008, Amnion ... CS1 maint: discouraged parameter (link) "Amnion". Bandcamp.com. Archived from the original on February 22, 2014. Retrieved ...
The chorion and the amnion together form the amniotic sac. It is formed by extraembryonic mesoderm and the two layers of ... The chorion consists of two layers: an outer formed by the trophoblast, and an inner formed by the somatic mesoderm; the amnion ... Chorioamnionitis, an inflammation of the chorion and amnion, usually due to bacterial infection. ...
Dorsal view, with the amnion laid open. X 30. Dorsum of human embryo, 2.11 mm in length. Section through the embryo. Fetus of ... it is situated between the amnion and the chorion and may lie on or at a varying distance from the placenta. There is no ... about eight weeks, enclosed in the amnion. Magnified a little over two diameters. Model of human embryo 1.3 mm long. Section ...
Dorsal view, with the amnion laid open. X 30. Human embryo of 2.6 mm. Diagram showing later stage of allantoic development with ...
Dorsal view, with the amnion laid open. X 30. Lateral section through the mammalian blastodisc. Mikawa T, Poh AM, Kelly KA, ...
Amnion nodosum is frequently also present (nodules on the fetal surface of the amnion). The use of oligohydramnios as a ... associated with placental insufficiency amnion nodosum; failure of secretion by the cells of the amnion covering the placenta ... Fetal intervention Potter's sequence Adeniran AJ, Stanek J (2007). "Amnion nodosum revisited: clinicopathologic and placental ...
Dorsal view, with the amnion laid open. X 30.. Epithelial-mesenchymal transition was first recognized as a feature of ...
The forewaters are released when the amnion ruptures. This is commonly known as the time when a woman's "water breaks". When ... can also be performed to release the fluid if the amnion has not spontaneously ruptured. Swallowed amniotic fluid (in later ...
The amnion. *The foetus. *Plastic Surgery. *Panendoscopy (or triple endoscopy) *Combines larynx, esophagogus, and bronchoscopy ...
Fetus of about 8 weeks, enclosed in the amnion. Magnified a little over two diameters. Placenta with attached fetal membranes, ...
August 20, 2020). "Human Amnion Epithelial Cells Produce Soluble Factors that Enhance Liver Repair by Reducing Fibrosis While ... Andrewartha, Neil; Yeoh, George (7 August 2019). "Human Amnion Epithelial Cell Therapy for Chronic Liver Disease". Stem Cells ...
When spontaneous rupture of the amnion occurs early in the second trimester, the separation of amnion from chorion produces ... The cause of amnion tearing is unknown and as such there are no known preventative measures. Surgical correction is recommended ... Garza A, Cordero JF, Mulinare J (1988). "Epidemiology of the early amnion rupture spectrum of defects". Am J Dis Child. 142 (5 ...
Subamniotic or preplacental hematomas are contained within amnion and chorion. Rare. Most patients with a small subchorionic ...
The word amniomancy comes from the Latin amnion, meaning membrane. The French proverb Il est ne coiffe is thought to originate ...
Mouse epiblast cells are not specified to amnion cell fate. Gastrulation occurs in the epiblast of avian embryos. A local ... The epiblast cells adjacent to the trophoblast are specified to become amnion cells. The mouse epiblast transitions from a ...
... occurs in very high concentrations in amniotic fluid and amnion. Proprotein convertase 1 converts prorenin into renin ... secretion and uptake of prorenin in human amnion". Physiological Reports. 3 (4): e12313. doi:10.14814/phy2.12313. PMC 4425950. ...
The amnion (5) aids in osmoregulation and serves as a saltwater reservoir. The yolk sac (2) surrounding the yolk (3) contains ... An amnion, chorion, and allantois are present during embryonic life. The eggshell (1) protects the crocodile embryo (11) and ...
According to Herodotus, Cambyses' campaigns against Amnion and Ethiopia ended catastrophically. He states that the reason ...
Diagram showing the expansion of amnion and delimitation of the umbilicus. Model of human embryo 1.3 mm. long. Tail end of ... The allantois, along with the amnion and chorion (other extraembryonic membranes), identify humans and other mammals as well as ... Opened uterus with cat fetus in midgestation: 1 umbilicus, 2 amniotic sac (chorion and amnion), 3 allantois, 4 Yolk sac, 5 ...
Soon, amniogenic (amnion forming cells) amnioblasts separate from the epiblast and line the amnion, which encloses the amniotic ... The outer membrane, the chorion, contains the amnion and is part of the placenta. On the outer side, the amniotic sac is ... A premature rupture of membranes (PROM) is a rupture of the amnion that occurs prior to the onset of labor. An artificial ... The amniotic cavity is the closed sac between the embryo and the amnion, containing the amniotic fluid. The amniotic cavity is ...
An amnion, chorion, and allantois are present during embryonic life. The eggshell (1) protects the crocodile embryo (11) and ... The amnion (5) aids in osmoregulation and serves as a saltwater reservoir. The yolk sac (2) surrounding the yolk (3) contains ... 1. eggshell, 2. yolk sac, 3. yolk (nutrients), 4. vessels, 5. amnion, 6. chorion, 7. air space, 8. allantois, 9. albumin (egg ...
After defeating the Amnion, Alex finds Joshua's corpse inside the monster's body. Elle Holloway (エル・ハロウェイ, Eru Harouei) is the ... Coming to terms with the fact, Alex then battles the Amnion, a manifestation of Joshua. Depending on the game endings, Alex can ...
Pakistan, Indonesia, Bangladesh, and Malaysia use amnion in reconstructive surgery and burns. Body brokers are firms or ...
... and amnion); mouth gingival fibroblasts; and eye (corneal endothelium and keratocytes, trabecular cells, ciliary epithelium, ...
1909). "External Features of an Early Human Embryo with a Distended Amnion". Journal of Anatomy and Physiology. 43 (Pt 3): 235- ...
792 Death of Philaret the Merciful, of Amnia in Asia Minor. 799 Theodore the Studite and many followers moved from the ... Righteous Philaret the Merciful of Amnia in Asia Minor. OCA - Lives of the Saints. December 1/14. Orthodox Calendar ( ...
Righteous Philaret the Merciful of Amnia in Asia Minor. OCA - Feasts and Saints. Ὁ Ὅσιος Ἀντώνιος ὁ Νέος. 1 Δεκεμβρίου. ΜΕΓΑΣ ... of Amnia in Asia Minor (792) Saint Anthony the New, monk of Kios in Bithynia (865) Saint Theokletos, Archbishop of Sparta and ...
Amnion,, in reptiles, birds, and mammals, a membrane forming a fluid-filled cavity (the amniotic sac) that encloses the embryo ... More About Amnion. 5 references found in Britannica articles. animal. *formation and function in embryo* In animal development ... Amnion, in reptiles, birds, and mammals, a membrane forming a fluid-filled cavity (the amniotic sac) that encloses the embryo. ... In development, the amnion arises by a folding of a mass of extra-embryonic tissue called the somatopleure. Lined with ectoderm ...
... the inner forming the amnion, the outer the false amnion or serosa. The space between the amnion and the serosa constitutes the ... For the alien race in Stephen R. Donaldsons The Gap Cycle, see Amnion (Gap Cycle). The amnion is a membrane that closely ... Amphibians and fish are not amniotes and thus lack the amnion. The amnion stems from the extra-embryonic somatic mesoderm on ... The amnion, along with the chorion, the yolk sac and the allantois form a protective sac around the embryo. In birds, reptiles ...
Amnion nodosum is caused by the unexpected abrasion of amnion with depositions of the fetal surface cells and acellular debris ... Amnion nodosum are nodules found on the amnion, and is frequently present in oligohydramnios. The nodules are composed of ... Amnion nodosum is granules on amnion whereas whitish nodules on the cord suggest a candidial infection.[citation needed] ... on the eroded areas(due to moderate or severe oligohydramnios, the amnion can get "touch" with the fetal skin). Amnion nodosum ...
amnion NH3 synonyms, amnion NH3 pronunciation, amnion NH3 translation, English dictionary definition of amnion NH3. Noun 1. ... amniotic sac - thin innermost membranous sac enclosing the developing embryo of higher vertebrates amnion, amnios amniote - any ... Amnion NH3 - definition of amnion NH3 by The Free Dictionary https://www.thefreedictionary.com/amnion+NH3 ... redirected from amnion NH3). Also found in: Thesaurus, Medical. ThesaurusAntonymsRelated WordsSynonymsLegend: ...
The effects of human amnion epithelial cells (hAECs) on angiogenesis remain controversial. It is yet unknown if the presence of ... Evaluating the Impact of Human Amnion Epithelial Cells on Angiogenesis. Dandan Zhu. ,1. ,. 2 Ruth Muljadi. ,1. ,. 2 Siow Teng ... Evaluating the Impact of Human Amnion Epithelial Cells on Angiogenesis,. Stem Cells International,. vol. 2016. ,. Article ID ... R. Lim, S. T. Chan, J. L. Tan, J. C. Mockler, S. V. Murphy, and E. M. Wallace, "Preterm human amnion epithelial cells have ...
... Murray D. Mitchell,1 Anna P. Ponnampalam,2 ... Murray D. Mitchell, Anna P. Ponnampalam, and Gregory E. Rice, "Epigenetic Regulation of Cytokine Production in Human Amnion and ...
Thus, amnion can provide a foundational platform for new cells to grow and flourish. In this case series, super thick amniotic ...
Amnios Cryopreserved Liquid Amnion by Bone Bank. Manufacturer: Bone Bank Allografts. No description is available for this ...
... of which are attributed to the pre-term premature rupture of amnion. Rupture of amnion is thought to be associated with a ... These data provide an accurate insight into the biomechanical process of amnion rupture and highlight X-ray diffraction as a ... However, there is very little information concerning the detailed organisation of fibrillar collagen in amnion and how this ... Amnion Is the Subject Area "Amnion" applicable to this article? Yes. No. ...
AmnioFix Amnion / Chorion Membrane Injectable Allograft by MiMedx. Manufacturer: Mimedx Group, Inc ...
... amnion nodosum explanation free. What is amnion nodosum? Meaning of amnion nodosum medical term. What does amnion nodosum mean? ... Looking for online definition of amnion nodosum in the Medical Dictionary? ... Related to amnion nodosum: breech presentation, Prune belly syndrome. amnion. [am´ne-on] the innermost fetal membrane, which ... amnion nodo´sum a nodular condition of the fetal surface of the amnion, usually appearing near the insertion of the cord; it ...
The amnion is derived from the embryo and forms as early as eight days after fertilization, when the fate of cells has yet to ... A part of the placenta called the amnion, or the outer membrane of the amniotic sac, is comprised of cells that have strikingly ... This may be due to the fact that these amnion-derived cells do not express a certain enzyme, called telomerase, that is ... To this end, they began looking at the viability of amnion as a cell source in late 2001, obtaining discarded placentas from ...
The umbilical cord passes through the amnion to reach the placenta. Within the umbilical cord, the umbilical vein is larger ...
The skin has many surface vessels and is now thicker and much harder to see through. Seeing the beating heart is no longer possible ...
In vitro treatment of primary human amnion epithelial cells with 40 μM T-oligos ([TTAGGG]2) that mimic telomere fragments, ... In vitro and in situ telomere fragments increased human and murine amnion p38MAPK, senescence and inflammatory cytokines. We ... could induce human and murine amnion cell senescence. In a cross-sectional clinical study, AF telomere fragment concentrations ... Amnion Is the Subject Area "Amnion" applicable to this article? Yes. No. ...
... amnion, and chorion is perfect for childbirth education courses. Visit Cascade HealthCare Products secure Website to view our ... Amnion, Chorion Model - $89 A great teaching tool, this model of the placenta, cord, ... A great teaching tool, this model of the placenta, cord, amnion, and chorion is perfect for childbirth education courses. Fetal ...
In this study, human amnion epithelial cells (hAECs) were derived from amnion obtained from placentas that were discarded after ... Amnion Epithelial Cells: Cell Therapy Going Green! Message Subject. (Your Name) has forwarded a page to you from Science ... Recycling human amnion allows the production of stemlike cells that differentiate into airway epithelium and soothe injured ... Recycling human amnion allows the production of stemlike cells that differentiate into airway epithelium and soothe injured ...
The amnion and chorion ("amnion" hereafter) form a membrane that surrounds the baby during pregnancy and plays an important ... Amnion Epithelial Cells (AECs) are a stem-like cell that can be isolated in large numbers (150 to 200 million per gram) from ... The fetal membranes - amnion and chorion - also contain stem cells and stem cell-like cells that can be isolated and banked for ... The amnion dressings promote cell growth, modulate inflammation and recruit endogenous (local) stem cells to facilitate wound ...
James L. Chen, MD, (San Francisco, CA) presents the case of a midsubstance Achilles repair augmented with Arthrex Amnion™ ...
... who suggested that the bands derived from early amnion rupture, with formation of mesodermal strings and naked chorion, which ...
Pavan B, Biondi C, Ferretti ME, Lunghi L, Paganetto G. 17beta-estradiol modulates prostaglandin E2 release from human amnion- ... The WISH epithelial cells are a good in vitro model to study the physiological functions of cells in the amnion. At the onset ... Methods: Human amnion-derived WISH cells were pretreated with various concentrations of dexmedetomidine (0.001-1 µg/ml) for 1 h ... The WISH human amnion cell line was purchased from the American Type Culture Collection (ATCC; Manassas, VA, USA) and cultured ...
Thus, this amnion preparation can serve as a bridge to promote axonal regeneration in vivo in damaged adult brain. ... Human amnion membrane serves as a substratum for growing axons in vitro and in vivo ... Human amnion membrane serves as a substratum for growing axons in vitro and in vivo ... Human amnion membrane serves as a substratum for growing axons in vitro and in vivo ...
Amnion refers to a membranous structure which covers and protects the embryo. It forms inside the chorion. The amnion usually ... Radiographic features Ultrasound The amnion can be visu... ... "Amnion" derives from the Greek word "άμνίον", a bowl in which ... Amnion refers to a membranous structure which covers and protects the embryo. It forms inside the chorion. The amnion usually ... The amnion can be visualised in most pregnancies before the 12th week of gestation and appears as a thin membrane separating ...
In human amnion fibroblasts taken from normal "term"-labor deliveries, compared to those from cesarean sections, the ... AKAP95-mediated nuclear anchoring of PKA mediates cortisol-induced PTGS2 expression in human amnion fibroblasts ... AKAP95-mediated nuclear anchoring of PKA mediates cortisol-induced PTGS2 expression in human amnion fibroblasts ... AKAP95-mediated nuclear anchoring of PKA mediates cortisol-induced PTGS2 expression in human amnion fibroblasts ...
Procedure: Amnion-Chorion allograft membrane on the root surface of periodontally diseased site. Application of Amnion-Chorion ... The amnion-chorion BioXclude membrane is regulated by the FDA under section 361 of the Public Health Service Act as a Human ... The FDA views using amnion chorion as a wound covering to aid in the healing of tissues throughout the body to be a homologous ... Application of Amnion-Chorion allograft membrane (ACM) on the root surface of periodontally diseased teeth in conjunction with ...
Device: Allogenic amnion chorion membrane Allogenic amnion chorion membrane (ACM) is a minimally manipulated allograft amnion ... Allogenic amnion chorion membrane (ACM) is a minimally manipulated allograft amnion chorion tissue for use as a wound covering ... Clinical and Histological Outcomes of Allogenic Amnion Chorion Membrane in the Healing of Free Gingival Graft Donor Site. The ... The purpose of this study is to compare an allogenic amnion chorion membrane to a collagen dressing in palatal wound healing ...
Other: Dehydrated Human Amnion/Chorion Membrane Dehydrated human amnion/chorion membrane (dHACM) product and is regulated as a ... Other: Dehydrated Human Amnion/Chorion Membrane Dehydrated human amnion/chorion membrane (dHACM) product and is regulated as a ... Dehydrated Human Amnion Chorion Membrane (dHACM) vs. Control in the Treatment of Partial Thickness Burns.. The safety and ... Dehydrated Human Amnion Chorion Membrane (dHACM) vs. Control in the Treatment of Partial Thickness Burns.. ...
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Tc-dpp RNAi suppresses the expression of Tc-pnr, an early amnion marker, which indicates that Tc-dpp is required for amnion ... However, although amnion specification might begin at the blastoderm stage, the distinction of lateral amnion cells from ... We suspect that these cells give rise to the amnion and propose that amnion specification occurs, at least laterally, after the ... Role of specific BMP signaling components in serosa and amnion specification. To test whether serosa and amnion specification ...
  • Amnion , in reptiles, birds, and mammals, a membrane forming a fluid-filled cavity (the amniotic sac) that encloses the embryo . (britannica.com)
  • Lined with ectoderm and covered with mesoderm (both are germ layers), the amnion contains a thin, transparent fluid in which the embryo is suspended, thus providing a cushion against mechanical injury. (britannica.com)
  • The amnion also provides protection against fluid loss from the embryo itself and against tissue adhesions. (britannica.com)
  • The amnion is a membrane that closely covers the embryo when first formed. (wikipedia.org)
  • It fills with the amniotic fluid which causes the amnion to expand and become the amniotic sac which serves to provide a protective environment for the developing embryo or fetus. (wikipedia.org)
  • The amnion, along with the chorion, the yolk sac and the allantois form a protective sac around the embryo. (wikipedia.org)
  • in the youngest embryo which has been studied the amnion was already present as a closed sac, and appears in the inner cell-mass as a cavity. (wikipedia.org)
  • When first formed, the amnion is in contact with the body of the embryo, but about the fourth or fifth week amniotic fluid (also called liquor amnii) begins to accumulate within it. (wikipedia.org)
  • In reptiles, birds, and many mammals the amnion is developed in the following manner: At the point of constriction where the primitive digestive tube of the embryo joins the yolk sac a reflection or folding upward of the somatopleure takes place. (wikipedia.org)
  • Amnion, chorion, and other embryonic membranes surrounding the embryo of a placental mammal. (thefreedictionary.com)
  • The amnion is derived from the embryo and forms as early as eight days after fertilization, when the fate of cells has yet to be determined, and serves to protect the developing fetus. (rxpgnews.com)
  • Amnion refers to a membranous structure which covers and protects the embryo. (radiopaedia.org)
  • Amnion - (Schafhäutchen) heißt die innerste von den häutigen Hüllen, welche im menschlichen und thierischen Eie den Embryo umgeben. (academic.ru)
  • Amnion - Infobox Anatomy Name = Amnion Latin = GraySubject = 12 GrayPage = 56 Caption = Surface view of embryo of Hylobates concolor. (academic.ru)
  • Early in the pregnancy, the amnion is very close to the embryo. (study.com)
  • The embryo, too, develops and grows larger, but the amnion expands more rapidly so that there's more space between it and the embryo. (study.com)
  • That's pretty much what happens with the amnion: it starts out very close to the embryo, but by the fourth or fifth week of pregnancy, it has expanded to be more like a spaceship than a spacesuit. (study.com)
  • This research is about the amnion, which is actually an extraembryonic tissue necessary for survival of the embryo itself," says Gumucio. (uofmhealth.org)
  • The space between the embryo and the amnion is called the amniotic cavity, which is lined by ectoderm and filled with amniotic fluid. (yourarticlelibrary.com)
  • The amnion provides a watery pool around the embryo, thus preventing any danger of desiccation and keep the embryo moist. (yourarticlelibrary.com)
  • Both amnion and chorion prevents the adhesion of embryo to various embryonic membranes. (yourarticlelibrary.com)
  • The allantois grows rapidly and within ten days completely surrounds the embryo and yolk sac and fills the extra-embryonic coelom between the amnion and chorion. (yourarticlelibrary.com)
  • The amnion is the pouch-like tissue present in the early embryo that lies over the dorsal surface of the epiblast portion of the developing inner cell mass. (repropedia.org)
  • As gestation progresses, the amnion grows outward and eventually surrounds the entire embryo and, in live-bearing animals, the umbilical cord, for which it forms an epithelial covering. (repropedia.org)
  • The amniotic membrane or "amnion" is a thin tough sac of membrane that protects the embryo during pregnancy against any injuries that can lead to fetal death. (renewmedispa.com)
  • The amnion is the innermost layer of the amniotic sac, the bag of fluid that protects the embryo, and later the fetus, during pregnancy. (fertilitysmarts.com)
  • In the early stages of implantation, there is nothing between the amnion and the embryo. (fertilitysmarts.com)
  • The amniotic sac, commonly called the bag of waters, sometimes the membranes, is the sac in which the fetus develops in amniotes.It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth.The inner of these fetal membranes, the amnion, encloses the amniotic cavity, containing the amniotic fluid and the fetus. (kethephuyhoang.com)
  • The fetal membranes - amnion and chorion - also contain stem cells and stem cell-like cells that can be isolated and banked for clinical use. (parentsguidecordblood.org)
  • On cross sections of rolled amnion membranes, regenerating axons of cultured neurons were guided along pathways of basement membrane that were immunoreactive with an antibody to laminin. (sciencemag.org)
  • In addition, when rolled amnion membranes were implanted into a lesion cavity between the rat septum and hippocampus, cholinergic neurons extended axons through the longitudinally oriented implant into the hippocampus. (sciencemag.org)
  • The amnion is the inner of the two fetal membranes (the chorion is the outer one). (enacademic.com)
  • In the latest stages of gestation, the amnion adheres to the inner cell layer of the chorion, forming the inner of the two membranes (the two together serving as the amniotic sac) surrounding the fetus. (repropedia.org)
  • Mesenchymal Stem Cells (MSCs) have been successfully isolated from first-, second-, and third-trimester placental compartments, including the amnion, chorion, decidua parietalis and decidua basalis. (parentsguidecordblood.org)
  • Comparative study of regenerative effects of mesenchymal stem cells derived from placental amnion, chorion and umbilical cord on dermal wounds. (bioportfolio.com)
  • Design and Methods We examined whether amnion-derived adherent cells have the characteristics of mesenchymal stem cells, and whether these adherent cells can support the proliferation of umbilical cord blood-derived lineage-negative and CD34-positive cells (Lin - CD34 + cells) obtained from the same fetus to a greater extent than those derived from other fetuses. (haematologica.org)
  • Results Culture-expanded amnion-derived adherent cells expressed mesenchymal stem cell markers and HLA-ABC molecules and could differentiate into osteoblasts, adipocytes and chondrocyte-like cells, indicating that the cells have the characteristics of mesenchymal stem cells. (haematologica.org)
  • Conclusions It is likely that a MHC restriction exists between hematopoietic stem cells and mesenchymal stem cells/stromal cells in the human hematopoietic system and that granulocute-macropage colony-stimulating factor contributes to some extent to the preferential hematopoiesis-supporting ability of the MHC-matched amnion-derived adherent cells. (haematologica.org)
  • Emerging evidence suggests human amnion tissue as a valuable source of two distinct types of pluripotent cells, amnion epithelial cells (hAECs) and mesenchymal stromal cells (hAMSCs), for applications in cell replacement therapy. (uzh.ch)
  • Flow cytometric characterization of primary cultures showed expression of mesenchymal progenitor markers CD73, CD90, CD105, and CD166, as well as the embryonic stem cell markers SSEA-3 and -4 on both amnion cell types. (uzh.ch)
  • In development, the amnion arises by a folding of a mass of extra-embryonic tissue called the somatopleure. (britannica.com)
  • The MSCs represent less than 1% of the cells present in the placenta, while the average yield of MSCs from chorions and amnions is between 1 to 10 million per gram of tissue. (parentsguidecordblood.org)
  • Amnion-Chorion Allograft Barrier Used for Root Surface and Guided Tissue Regeneration for Periodontal Intrabony Defects and Grade II Furcation Defects. (clinicaltrials.gov)
  • Allogenic amnion chorion membrane (ACM) is a minimally manipulated allograft amnion chorion tissue for use as a wound covering in dental surgery. (clinicaltrials.gov)
  • Dehydrated human amnion/chorion membrane (dHACM) product and is regulated as a Human Cells, Tissues and Cellular and Tissue Based Product (HCT/P) under Section 361 of the Public Health Service Act by the Food and Drug Administration (FDA). (clinicaltrials.gov)
  • ONLY live birth amnion is used (no aborted fetal tissue). (vampirefacelift.com)
  • To better understand potential evolutionary links between BMP signaling and extra-embryonic tissue specification, we examined the activity profile and function of BMP signaling in serosa and amnion patterning of the scuttle fly Megaselia abdita (Phoridae) and compared the BMP activity profiles between M. abdita and D. melanogaster . (biologists.org)
  • However, at the beginning of gastrulation, peak BMP activity in M. abdita shifted towards prospective amnion tissue. (biologists.org)
  • Amnion and amniotic tissue has been studied for more than 100 years in the treatment of acute and chronic wounds. (ipodiatry.org)
  • Recent studies have focused on the use of amnion tissue in the management of full-thickness diabetic wounds, particularly of the lower extremities. (ipodiatry.org)
  • The new study, performed at the University of Michigan and reported in Nature Materials , provides the first opportunity to study the development of amnion, an essential tissue that envelops and protects the growing fetus. (uofmhealth.org)
  • Previously, Gumucio's group showed that embryonic stem cells have a strong tendency to form a hollow sphere, structurally similar to the precursor of amnion tissue. (uofmhealth.org)
  • Gumucio and Fu teamed up to explore whether the initiating signal for embryonic stem cells to form amnion tissue might be mechanical in nature. (uofmhealth.org)
  • Presently, all commercially available amniotic tissue grafts are obtained from donated placental tissues of pre-screened, consented volunteers having C-section delivery of full-term live births and use one or more layers of processed amnion and/or chorion. (todayswoundclinic.com)
  • Amnion is a placental tissue that surrounds and protects the fetus during development in utero. (bonegrafting.com)
  • The properties of amnion that benefit the fetus also make it an effective material for protecting a wide variety of wounds, while at the same time creating an environment conducive to the regeneration of healthy tissue. (bonegrafting.com)
  • These materials from the amnion are also expected to open a new field in tissue engineering. (go.jp)
  • Amnion-derived stem cells contain a variety of grown factors and cytokines that play important roles in the soft tissue repair, replacement, and reconstruction. (mnhcaz.com)
  • Vampire Amnion refers to the combination of the patient's own platelet rich plasma plus donor amnion, injected into an area where tissue regeneration is desired. (renewmedispa.com)
  • This amnion contains many proteins (collagen and growth factors) which support tissue regeneration and healing. (renewmedispa.com)
  • The membrane itself consists of a combination of tissue layers with protective and therapeutic properties, making amnion a unique membrane in the human body. (renewmedispa.com)
  • By choosing to store your Amnion alongside your baby's cord blood, cord tissue and Placenta Cells , your family will have access to the widest range of treatments if and when they need them. (cells4life.com)
  • Why store Amnion tissue? (cells4life.com)
  • Why do parents choose Amnion placenta tissue banking? (cells4life.com)
  • 1] Other studies have also shown amnion tissue is helpful in healing diabetic foot ulcers,[2] which affect 10% diabetes suffers in the UK. (cells4life.com)
  • 1] In an animal model, the application of amnion resulted in tissue regeneration, inhibits fibrosis (scarring of connective tissue), and reduces inflammation. (cells4life.com)
  • The purpose of this pilot project is to evaluate the efficacy of application of Amnion-Chorion allograft membrane on the root surface of periodontally diseased teeth in conjunction with bone substitute covered by Amnion-Chorion allograft in a combination GTR treatment of periodontal intrabony and furcation defects. (clinicaltrials.gov)
  • EpiFix® is a dehydrated Human Amnion/ Chorion Membrane (dHACM) allograft. (woundreference.com)
  • The construct contains an allograft having at least one layer of human amnion and chorion tissues, and is adapted for insertion into a small incision or a cannula employed in the minimally invasive surgery for access to the surgical site. (kethephuyhoang.com)
  • The effects of human amnion epithelial cells (hAECs) on angiogenesis remain controversial. (hindawi.com)
  • Human amnion epithelial cells (hAECs) isolated from the amniotic membrane are an attractive source of cell therapy. (hindawi.com)
  • Furthermore, studies on the therapeutic effects of hAECs showed that the engraftment of amnion cells is very rare [ 5 , 7 ], and hAEC-conditioned media have been shown to contain soluble factors that exert profound biological effects [ 8 ]. (hindawi.com)
  • In this study, human amnion epithelial cells (hAECs) were derived from amnion obtained from placentas that were discarded after normal-term deliveries. (sciencemag.org)
  • The human amnion epithelial cells (hAECs) resultant from term placenta are anatomically and histologically focused fetal epithelial cells and may keep the pluripotent assets of early epiblast cells. (omicsonline.org)
  • Following our optimized protocol, primary yields were 6.3 x 10(6) hAECs and 1.7 x 10(6) hAMSCs per gram amnion. (uzh.ch)
  • With this in mind, we investigated the ability of human amnion epithelial cells (hAECs) to express functional CFTR. (oalib.com)
  • Human amnion epithelial cells (hAECs) moderate the effect of IA LPS on fetal development, but their influence on the acute inflammatory response to IA LPS is unknown. (monash.edu)
  • The umbilical cord passes through the amnion to reach the placenta. (ehd.org)
  • Watch this lesson to find out more about the prenatal environment, including the importance of the amnion and umbilical cord and what they do. (study.com)
  • Let's examine two such protective elements: the amnion and the umbilical cord. (study.com)
  • healing in an in vivo mouse model: Amnion-derived MSCs (AMSCs), blood vessel-derived MSCs (BV-MSCs) from the chorionic plate and Wharton's jelly-derived MSCs (WJ-MSCs) from the umbilical cord. (bioportfolio.com)
  • the amnion has enveloped the umbilical cord. (enacademic.com)
  • Extra-amniotic pregnancy is a rare condition that results from a rupture of the amnion, leading to development of the fetus within the extraembryonic coelom. (wikipedia.org)
  • identifies a potential source of stemlike cells, the human amnion (a membrane that surrounds a fetus and contains the amniotic fluid) for the potential treatment of interstitial lung disease. (sciencemag.org)
  • The amnion can be visualised in most pregnancies before the 12th week of gestation and appears as a thin membrane separating the amniotic cavity, which contains the fetus, from the extra-embryonic coelom and the secondary yolk sac 1 . (radiopaedia.org)
  • amnion membrane around a fetus, said to be originally bowl in which the blood of victims was caught [Liddell & Scott], which is variously said to be of unknown origin, from ame bucket, or a dim. (academic.ru)
  • Caption2 = Human fetus, enclosed in the amnion. (academic.ru)
  • The properties of Amnion that benefit teh fetus also make it an effective material for providing barrier protection in a number of surgical settings. (sabradent.com)
  • The amnion and amniotic sac expand as the fetus grows, providing a cushion that encases and supports the fetus. (fertilitysmarts.com)
  • The fluid is retrieved from the amnion and contains cells that provide information on the chromosomal structure and development of the fetus. (fertilitysmarts.com)
  • The amnia fluid, which continuously changes every 3 hours 8 times a day, remains constant at a certain temperature, distributes the heat it needs equally to each side in terms of the development of the fetus. (mysweetybaby.com)
  • Fetal survival, amnion membrane integrity, and the presence of amniotic fluid were evaluated at 30 days GA. Cultures showed good survival in the collagen support material. (uni-muenchen.de)
  • But a month or so into the pregnancy, the amnion begins to fill up with a fluid known as amniotic fluid. (study.com)
  • In amniotic membrane, the AQP-facilitated transfer of water across amnion cells has been proposed as a mechanism for amniotic fluid volume (AFV) regulation. (elsevier.com)
  • The epithelial cell layer of human amnion membrane can be removed while the basement membrane and stromal surfaces remain morphologically intact. (sciencemag.org)
  • The amnion dressings promote cell growth, modulate inflammation and recruit endogenous (local) stem cells to facilitate wound repair. (parentsguidecordblood.org)
  • 54 Likes, 13 Comments - Residents (@lapmrresidency) on Instagram: "Resident's Corner: Name: David Huy Blumeyer, MD Year in residency: PGY-4 Where were you born…" The word part that completes the medical term meaning inflammation of the amnion, _____/itis, is: Definition. (kethephuyhoang.com)
  • To help determine if amnion-derived cells that are delivered directly to tissues would cause tumors, the researchers conducted studies in immune system-deficient mice and found no evidence that tumors had developed seven months after the cells were injected into multiple sites. (rxpgnews.com)
  • Failure to implant and the lack of peripheral tissues like amnion are among the causes of such pregnancy losses. (uofmhealth.org)
  • Amnion consists primarily of fibrillar and membranous collagens, elastin, and a mix of growth factors and cytokines that provide the properties unique to placental tissues. (sabradent.com)
  • Apart from contractions, our recent study have shown that OT can also activate pro-inflammatory pathways in both human myometrial and amnion cells which suggests the pro-inflammatory role of OT should be taken into account when developing tocolytics targeting the OT/OT receptor (OT/OTR) system. (aspetjournals.org)
  • Amnion nodosum is caused by the unexpected abrasion of amnion with depositions of the fetal surface cells and acellular debris on the eroded areas(due to moderate or severe oligohydramnios, the amnion can get "touch" with the fetal skin). (wikipedia.org)
  • Thus, amnion can provide a foundational platform for new cells to grow and flourish. (eyecancer.com)
  • If we could develop efficient methods that would allow amnion-derived cells to differentiate into specific cell types, then placentas would no longer be relegated to the trashcan. (rxpgnews.com)
  • A part of the placenta called the amnion, or the outer membrane of the amniotic sac, is comprised of cells that have strikingly similar characteristics to embryonic stem cells, including the ability to express two key genes that give embryonic stem cells their unique capability for developing into any kind of specialized cell, the researchers report. (rxpgnews.com)
  • This may be due to the fact that these amnion-derived cells do not express a certain enzyme, called telomerase, that is important for normal DNA and chromosome replication, and by extension, ultimately, cell division. (rxpgnews.com)
  • Perhaps it's to their advantage that the amnion epithelial cells lack telomerase expression, because telomerase is associated with many cancers and one of the main concerns about stem cell therapies is that transplanted stem cells would replicate in the recipient to form tumors," noted Toshio Miki, M.D., Ph.D., first author of the paper and an instructor in the department of pathology at the School of Medicine. (rxpgnews.com)
  • With the addition of various growth factors, the authors report the amnion-derived cells could differentiate to become liver cells, heart cells, the glial and neuronal cells that make up the nervous system, and pancreatic cells with genetic markers for insulin and glycogen production. (rxpgnews.com)
  • Amnion Epithelial Cells: Cell Therapy Going Green! (sciencemag.org)
  • These studies demonstrate that amnion-derived epithelial cells are a potential source for developing cell-based therapies such as cell transplantation to treat chronic airway diseases. (sciencemag.org)
  • Recycling human amnion allows the production of stemlike cells that differentiate into airway epithelium and soothe injured lungs. (sciencemag.org)
  • Amnion Epithelial Cells (AECs) are a stem-like cell that can be isolated in large numbers (150 to 200 million per gram) from full-term placentae. (parentsguidecordblood.org)
  • In this study, we examined the influence of dexmedetomidine on the expression of cyclooxygenase-2 (COX-2), prostaglandin E 2 (PGE 2 ) and inflammatory cytokines in lipopolysaccharide (LPS)-stimulated human amnion-derived WISH cells. (medsci.org)
  • Human amnion-derived WISH cells were pretreated with various concentrations of dexmedetomidine (0.001-1 µg/ml) for 1 h and after then treated with LPS (1 µg/ml) for 24 h. (medsci.org)
  • Amnion cells engineering: A new perspective in fetal membrane healing after intrauterine surgery? (uni-muenchen.de)
  • group III, collagen plug ( n = 19), and group IV, collagen plug with cultured amnion cells ( n = 19). (uni-muenchen.de)
  • In an in vitro amnion invasion assay system, rTIMP inhibited the invasion of B16-F10 murine melanoma cells through the human amniotic membrane at an identical concentration to that reported previously for natural TIMP. (aacrjournals.org)
  • In contrast rTIMP did not inhibit the cell adhesion step in amnion invasion, but actually increased the number of tumor cells that were tightly bound to the amnion. (aacrjournals.org)
  • When the Lin - CD34 + cells were cultured on the autologous (MHC-matched) or MHC-mismatched amnion-derived adherent cells in short-term assays (hematopoietic stem cell-proliferation) and long-term culture-initiating cell assays, greater expansion of the Lin - CD34 + cells was observed in the MHC-matched combination than in MHC-mismatched combinations. (haematologica.org)
  • No systematic attempt has been yet made to determine the quantity and quality of amnion cells after isolation and culture. (uzh.ch)
  • In contrast to our findings with Atosiban, the presence of the orally active OTR antagonist, Nolasiban, reduced the effect of OT on NF-κB and p38 kinase activation both in myometrial and amnion cells. (aspetjournals.org)
  • In this structure, the stem cells began to turn into amnion cells, organized in a shell around an empty cavity. (uofmhealth.org)
  • In other words, for cells to begin to form amnion, they need to sense that they have landed on a suitable surface - what scientists term a mechanical signal. (uofmhealth.org)
  • To confirm that the trigger for embryonic stem cells to form amnion is mechanical, the team made two cell culture plates covered in microscopic silicone bristles, again with the loose gel on top. (uofmhealth.org)
  • On the longer bristles, which felt more like a soft, thick gel bed to the cells, the stem cells turned into amnion. (uofmhealth.org)
  • The bristled chips were made at the Lurie Nanofabrication Facility at U-M. The amnion cysts grown from stem cells and layered on these bristles are pictured in the top photo. (uofmhealth.org)
  • Then, the researchers were able to show that reprogrammed adult skin cells, known as induced pluripotent stem cells, can also be made to mimic amnion growth. (uofmhealth.org)
  • Amnion-Derived Multipotent Progenitor Cells Inhibit Blood Monocyte Differentiation Into Mature Dendritic Cells. (biolifesolutions.com)
  • Banas R, Miller C, Guzik L, Zeevi A. Amnion-Derived Multipotent Progenitor Cells Inhibit Blood Monocyte Differentiation Into Mature Dendritic Cells. (biolifesolutions.com)
  • Amnion-derived Multipotent Progenitor Cells secrete pro-healing cytokines and growth factors that promote migration of fibroblasts and keratinocytes. (arvojournals.org)
  • Recently, amnion-derived cells have been reported to have multipotent differentiation ability, and these cells have attracted attention as a cell source for cell-transplantation therapy. (go.jp)
  • The amnion is the location of the cells and fluid gathered during a medical procedure called an amniocentesis. (fertilitysmarts.com)
  • Alongside Amnion placenta storage, we also store cells from the chorionic villi. (cells4life.com)
  • The amniotic membrane also has additional topical applications so choosing to store both Placental Cells and Amnion is the best way to ensure they can access the newest and best therapies as they become available. (cells4life.com)
  • Studies suggest that an amnion injection of cells could be used to treat cardiovascular defects while patches of the amniotic membrane have been used to treat patients with inflammatory cardiovascular conditions. (cells4life.com)
  • In addition to catabolic processes, altered production of matrix proteins by amnion cells and changes in levels of cytokines or growth factors may also promote cell death. (levelofhealth.com)
  • JC human papovavirus replication in human amnion cells. (cngb.org)
  • Methods: In this study, we explored the potential of amnion membrane extracts (AME) and amnion/chorion membrane extracts (A/CME) to promote osteogenic differentiation of osteoblast-like (MG-63) cells. (elsevier.com)
  • The amnion and chorion ("amnion" hereafter) form a membrane that surrounds the baby during pregnancy and plays an important role in protecting the baby from physical and immunological damage. (parentsguidecordblood.org)
  • London, Jan 8 (ANI): Scientists at the Baylor College of Medicine in Houston, Texas, have shown that egg white can act as a sealant for the amnion , a membrane that surrounds developing foetuses. (freethesaurus.com)
  • The simplest interpretation of our in vitro studies is that increased expression of the MMP-9 proenzyme leads to the formation of active enzyme, which, in turn, degrades type IV collagen, leading to amnion cell apoptosis. (levelofhealth.com)
  • The present report documents that type IV collagen is lost from the rat amnion before the onset of labor. (levelofhealth.com)
  • The relative decline in type IV collagen could be the result of diminished synthesis, accumulation of other proteins in the amnion which alters the relative abundance of type IV collagen, increased degradation, or a combination of these processes. (levelofhealth.com)
  • Since amnion type IV collagen levels are reduced to some extent before the rise in MMP-2 and MMP-9 protein and activity, it is likely that these enzymes are not responsible for this phase of the decline. (levelofhealth.com)
  • The hypothesis of an intrinsic defect of germ plasma put forward by Streeter to explain the abnormalities observed in 'amniotic bands sequence' (ABS) was not supported by Torpin, who suggested that the bands derived from early amnion rupture, with formation of mesodermal strings and naked chorion, which then constricted or adhered to fetal parts. (bmj.com)
  • A study of the dependence of amnion cell apoptosis upon this specific prostaglandin pathway is proposed. (grantome.com)
  • James L. Chen, MD, (San Francisco, CA) presents the case of a midsubstance Achilles repair augmented with Arthrex Amnion™ matrix. (arthrex.com)
  • Dr. Samimi also demonstrates wrapping the peroneal nerve with Arthrex Amnion™ matrix to help prevent adhesions and scarring. (arthrex.com)
  • Members of the Vampire Facelift® provider group, can login to the member's site to see more specifics of how to use Vampire Amnion™ to rejuvenate the hands and face and to receive special pricing from the largest supplier of quality amnion in the U.S. (vampirefacelift.com)
  • What is Vampire Amnion? (renewmedispa.com)
  • It is screened rigorously to rule out communicable disease, and is sterilized further multiple times prior to release as Vampire Amnion for injection. (renewmedispa.com)
  • Vampire Amnion is an optional "add on" to your platelet rich plasma procedure. (renewmedispa.com)
  • Who may benefit from Vampire Amnion? (renewmedispa.com)
  • The cavity contained within the amnion is termed the amniotic cavity. (radiopaedia.org)
  • This transition correlated with the first signs of amnion differentiation laterally adjacent to the serosa anlage. (biologists.org)
  • The amnion is a protective sac that surrounds a baby in the mother's womb. (study.com)
  • This fluid increases in quantity and causes the amnion to expand and ultimately to adhere to the inner surface of the chorion, so that the extra-embryonic part of the coelom is obliterated. (wikipedia.org)
  • The relative abundances of AQP1, AQP3, AQP8, AQP9, and AQP11 mRNA and protein were determined in the amnion of 16 late-gestation ovine fetuses subjected to 2 days of control conditions, urine drainage, urine replacement, or intraamniotic fluid infusion. (elsevier.com)
  • Our study supports the hypothesis that AQP1 may play a positive role in regulating the rate of fluid transfer across the amnion, thereby participating in the dynamic regulation of AFV. (elsevier.com)
  • Curious about the Excess Of Amnion Fluid! (mysweetybaby.com)
  • The amnia sac protects the developing baby from external factors in the womb and the fluid it contains allows the baby to move safely in the mother's womb. (mysweetybaby.com)
  • Amnion fluid plays a role in the development of many organ systems, such as lungs and kidneys, especially in the muscle and nervous system. (mysweetybaby.com)
  • Why Does Excess Amnion Fluid Cause? (mysweetybaby.com)
  • As well as the lack of amnion fluid, the excess amnion fluid is among the situations that worry expectant mothers. (mysweetybaby.com)
  • The amnion stems from the extra-embryonic somatic mesoderm on the outer side and the extra-embryonic ectoderm or trophoblast on the inner side. (wikipedia.org)
  • The space between the amnion and the serosa constitutes the extra-embryonic celom, and for a time communicates with the embryonic celom. (wikipedia.org)
  • Herein, we suppose a new standard for distinguishing chick heart morphology in different developing stages based on the relationship between the embryonic heart development and the amnion folding in chick. (scialert.net)
  • After 40 hours of incubation, the extra-embryonic blastoderm, immediately in front of the head i.e., the anterior margin of the anterior limiting groove rises up as the head fold of the amnion. (yourarticlelibrary.com)
  • The space between the amnion and the chorion is continuous with the extra-embryonic coelom (chorionic cavity), and is termed the sero- amniotic cavity. (yourarticlelibrary.com)
  • The specimen to be described in the present paper is a little older than Arey's specimens and is of the type in which there are two amniotic cavities, indicating division of the embryonic area at a Very early stage of development, bel7ore formation of the amnions. (edu.au)
  • We have also demonstrated that Nolasiban treatment alone has no significant stimulatory effect on both the myometrium and amnion. (aspetjournals.org)
  • Cell lysates from human bronchial epithelial, fibroblast, amnion, lymphocyte, mesothelial and kidney cell lines were prepared and proteins run on two-dimensional gel-electrophoresis (2DE) with in-gel digestion and mass spectrometrical analysis using the MALDI-TOF principle. (springer.com)
  • The empty amnion: a sign of early pregnancy failure. (radiopaedia.org)
  • Think about a balloon filling up with water, and you can kind of picture what happens to the amnion as the pregnancy advances. (study.com)
  • Amnion Pregnancy Center is committed to providing you with everything you need to make an informed pregnancy decision, We believe women and men have a right to get accurate information from a resource that will not profit from the choices and pregnancy decisions they make. (amnioncpc.org)
  • but if separation occurs after the amnion is formed, the twins will lie in a common amniotic cavity. (edu.au)
  • Eventually, the baby will float inside the balloon-like amnion, which protects it and allows it to grow and develop safely. (study.com)
  • The purpose of this study is to compare an allogenic amnion chorion membrane to a collagen dressing in palatal wound healing after harvesting free gingival graft (FGG). (clinicaltrials.gov)
  • This work aims to investigate the effect of fetal amnion-wrapped acellular allogenic nerve transplantation on peripheral nerve injury (PNI) in dogs and to explore its advantages and feasibility in PNI repair. (conicyt.cl)
  • A total of 15 dogs were divided into three groups: the allogenic nerve transplantation (A), amnion-wrapped allogenic nerve transplantation (B), and allogenic nerve donor (C) groups. (conicyt.cl)
  • Amnion-wrapped acellular allogenic nerve transplantation can improve defected nerve morphology and the quality of transplanted nerve regeneration. (conicyt.cl)
  • The amnion is a feature of the vertebrate clade Amniota, which includes reptiles, birds, and mammals. (wikipedia.org)
  • Dehydrated Human Amnion Chorion Membrane (dHACM) vs. Control in the Treatment of Partial Thickness Burns. (clinicaltrials.gov)
  • We present a propensity-matched analysis of patients undergoing placement of dehydrated human amnion/chorion membrane (dHACM) around the neurovascular bundle (NVB) during nerve-sparing (NS) robot-assisted laparoscopic prostatectomy (RARP). (urotoday.com)
  • Micronized dehydrated human amnion/chorion membrane (μ-dHACM) is derived from donated human placentae and has anti-inflammatory, low immunogenic and anti-fibrotic properties. (biomedcentral.com)
  • After the fusion of the edges of the amniotic fold, the two layers of the fold become completely separated, the inner forming the amnion, the outer the false amnion or serosa. (wikipedia.org)
  • Marker-assisted analysis of six BMP signaling components ( dpp, gbb, scw, tkv, sax, sog ) by RNA interference revealed that both serosa and amnion specification of M. abdita are dependent on BMP activity. (biologists.org)
  • The presence of 2 chorions and amnions at birth confirm that the twins are dichorionic/diamniotic identical twins arising from a single zygote, a relatively rare gestation process (occurring only in approximately 20% of identical twins). (freethesaurus.com)
  • The amnion usually fuses with the outer chorion by around 14 weeks of gestation. (radiopaedia.org)
  • The inner wall of the fold has the layers reversed, its outer layer is of somatic mesoderm and inner of ectoderm, the two together form the amnion. (yourarticlelibrary.com)
  • There are two sections within the amniotic sac, the outer layer, called the chorion, and the inner layer called the amnion. (fertilitysmarts.com)
  • In fact, a number of randomised clinical trials favour the use of amnions in burns for their promotion of wound healing, patient comfort, and reduced need for dressing changes. (parentsguidecordblood.org)
  • Topical administration of cryopreserved living micronized amnion accelerates wound healing in diabetic mice by modulating local microenvironment. (semanticscholar.org)
  • 2010) Amnion epithelial cell isolation and characterization for clinical use. (oalib.com)
  • Mutant embryos failed to close the proamniotic canal, which caused the malformation of the amnion/chorion. (biologists.org)
  • On cutting' the amnion, twin embryos were seen lying in apparently separate amniotic sacs. (edu.au)
  • When the specimen was thoroughly fixed, it was studied with the following points in mind: the question of separate amnions, separate yolk stalks, the topography of the viscera (because of the well-known fact that twins often have situs inversus viscerorum), and, lastly, the sex of the embryos. (edu.au)
  • Amniocentesis is the medical term meaning surgical puncture of the amnion. (kethephuyhoang.com)
  • A precise amount (25mg) of amnion is micronized and suspended in sterile saline for injection. (renewmedispa.com)