Corpus Luteum Maintenance
Process of maintaining the functions of CORPORA LUTEA, specifically PROGESTERONE production which is regulated primarily by pituitary LUTEINIZING HORMONE in cycling females, and by PLACENTAL HORMONES in pregnant females. The ability to maintain luteal functions is important in PREGNANCY MAINTENANCE.
The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the UTERUS, the MAMMARY GLANDS and the BRAIN. It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from PREGNENOLONE, also serves as an intermediate in the biosynthesis of GONADAL STEROID HORMONES and adrenal CORTICOSTEROIDS.
Agenesis of Corpus Callosum
Birth defect that results in a partial or complete absence of the CORPUS CALLOSUM. It may be isolated or a part of a syndrome (e.g., AICARDI'S SYNDROME; ACROCALLOSAL SYNDROME; ANDERMANN SYNDROME; and HOLOPROSENCEPHALY). Clinical manifestations include neuromotor skill impairment and INTELLECTUAL DISABILITY of variable severity.
The reproductive organ (GONADS) in female animals. In vertebrates, the ovary contains two functional parts: the OVARIAN FOLLICLE for the production of female germ cells (OOGENESIS); and the endocrine cells (GRANULOSA CELLS; THECA CELLS; and LUTEAL CELLS) for the production of ESTROGENS and PROGESTERONE.
A gonadotropic glycoprotein hormone produced primarily by the PLACENTA. Similar to the pituitary LUTEINIZING HORMONE in structure and function, chorionic gonadotropin is involved in maintaining the CORPUS LUTEUM during pregnancy. CG consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is virtually identical to the alpha subunits of the three pituitary glycoprotein hormones (TSH, LH, and FSH), but the beta subunit is unique and confers its biological specificity (CHORIONIC GONADOTROPIN, BETA SUBUNIT, HUMAN).
An OOCYTE-containing structure in the cortex of the OVARY. The oocyte is enclosed by a layer of GRANULOSA CELLS providing a nourishing microenvironment (FOLLICULAR FLUID). The number and size of follicles vary depending on the age and reproductive state of the female. The growing follicles are divided into five stages: primary, secondary, tertiary, Graafian, and atretic. Follicular growth and steroidogenesis depend on the presence of GONADOTROPINS.
A major gonadotropin secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Luteinizing hormone regulates steroid production by the interstitial cells of the TESTIS and the OVARY. The preovulatory LUTEINIZING HORMONE surge in females induces OVULATION, and subsequent LUTEINIZATION of the follicle. LUTEINIZING HORMONE consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is common in the three pituitary glycoprotein hormones (TSH, LH and FSH), but the beta subunit is unique and confers its biological specificity.
The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase.
Supporting cells for the developing female gamete in the OVARY. They are derived from the coelomic epithelial cells of the gonadal ridge. Granulosa cells form a single layer around the OOCYTE in the primordial ovarian follicle and advance to form a multilayered cumulus oophorus surrounding the OVUM in the Graafian follicle. The major functions of granulosa cells include the production of steroids and LH receptors (RECEPTORS, LH).
Cholesterol Side-Chain Cleavage Enzyme
A mitochondrial cytochrome P450 enzyme that catalyzes the side-chain cleavage of C27 cholesterol to C21 pregnenolone in the presence of molecular oxygen and NADPH-FERRIHEMOPROTEIN REDUCTASE. This enzyme, encoded by CYP11A1 gene, catalyzes the breakage between C20 and C22 which is the initial and rate-limiting step in the biosynthesis of various gonadal and adrenal steroid hormones.
Those protein complexes or molecular sites on the surfaces and cytoplasm of gonadal cells that bind luteinizing or chorionic gonadotropic hormones and thereby cause the gonadal cells to synthesize and secrete sex steroids. The hormone-receptor complex is internalized from the plasma membrane and initiates steroid synthesis.
(9 alpha,11 alpha,13E,15S)-9,11,15-Trihydroxyprost-13-en-1-oic acid (PGF(1 alpha)); (5Z,9 alpha,11,alpha,13E,15S)-9,11,15-trihydroxyprosta-5,13-dien-1-oic acid (PGF(2 alpha)); (5Z,9 alpha,11 alpha,13E,15S,17Z)-9,11,15-trihydroxyprosta-5,13,17-trien-1-oic acid (PGF(3 alpha)). A family of prostaglandins that includes three of the six naturally occurring prostaglandins. All naturally occurring PGF have an alpha configuration at the 9-carbon position. They stimulate uterine and bronchial smooth muscle and are often used as oxytocics.
RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus (the body) which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.
A lactogenic hormone secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). It is a polypeptide of approximately 23 kD. Besides its major action on lactation, in some species prolactin exerts effects on reproduction, maternal behavior, fat metabolism, immunomodulation and osmoregulation. Prolactin receptors are present in the mammary gland, hypothalamus, liver, ovary, testis, and prostate.
Pregnancy, parturition, and lactation in hypophyseal stalk-transected beef heifers. (1/99)Progesterone secretion is crucial for maintaining pregnancy to parturition in mammalian species, and in cattle the corpus luteum is the primary source of this hormone. This study determined the roles of prolactin (PRL), growth hormone (GH) and luteinizing hormone (LH) in the luteotropic process in beef heifers hypophyseal stalk-transected (HST, n=7) or sham operated (sham operated controls, SOC, n=9) during midgestation. The main finding was that endogenous PRL and GH maintained progesterone secretion in HST heifers in a similar manner to that in SOC throughout pregnancy. Serum PRL averaged 37 vs 187 and GH 2 vs 4 ng/ml in HST heifers compared with SOC, whereas LH abruptly decreased to undetectable levels after HST compared with a modest 0.4 ng/ml in SOC heifers. The second finding was that parturition and lactation occurred in HST heifers with calf delivery induced to occur at the same time as SOC. Milk production in HST animals was severely limited, and postpartum estrus obliterated compared with SOC. The suckling stimulus sustained milk ejection in HST heifers in spite of diminished PRL, GH, thyroid stimulating hormone, thyroxine and tri-iodothyronine secretion. The results suggest that PRL, GH and possibly placental lactogen are luteotropic during pregnancy in cattle. (+info)
Source and site of action of anti-luteolytic interferon in red deer (Cervus elaphus): possible involvement of extra-ovarian oxytocin secretion in maternal recognition of pregnancy. (2/99)Six conceptuses were collected from red deer hinds on day 22 after synchronization of oestrus with intravaginal progesterone-releasing devices (removal of device = day 0). Within 24 h of culture in vitro, the supernatant from five of six conceptuses showed detectable antiviral activity. Interferon alpha (IFN-alpha) receptors were identified by immunohistochemistry on the luminal surface of the endometrium, in the neurohypophysis and paraventricular hypothalamus, but not in the ovaries of the hinds from which the conceptuses were collected. Another 16 intact hinds were synchronized as above. Injection of 4 mg IFN i.m. twice a day on days 13-15 had no effect on cloprostenol-induced oxytocin secretion on day 15 and did not prevent cloprostenol-induced luteal regression. Sixteen ovariectomized hinds received a protocol of steroid treatment to mimic ovarian hormone secretion during the normal oestrous cycle. On day 16, hinds showed undulant oxytocin secretion that showed a degree of temporal association with uterine PGF2 alpha release. Treatment with 4 mg IFN-alpha I 1 twice a day on days 13-16 had no effect on this spontaneous oxytocin secretion, but reduced the magnitude of cloprostenol-induced oxytocin secretion on day 17 (P < 0.05). These results indicate that red deer conceptuses secrete an anti-luteolytic IFN to which the endometrium expresses a receptor during early pregnancy. The presence of IFN receptors in the hypothalamus and posterior pituitary and the IFN-induced suppression of extra-ovarian oxytocin secretion provides tentative evidence of an involvement of the central nervous system in maternal recognition of pregnancy in deer. (+info)
Rearrangement of extracellular matrix during cluster formation by human luteinising granulosa cells in culture. (3/99)Human ovarian granulosa cells were cultured on a basement membrane preparation (Matrigel) to investigate the role of extracellular matrix components in granulosa cell cluster formation. Time-lapse videomicroscopy of these cultures revealed a rapid aggregation of cells which was initiated during the first 2-4 h of culture so that by 8 h most of the granulosa cells were incorporated into clusters. Further amalgamation then occurred with the transfer of cells along 'bridges' between combining clusters. The clustering process, which was complete by about 24 h, was accompanied by reorganisation of matrix which was visualised by immunolabelling of laminin. Clustering cells appeared to gather matrix which became distributed around the clusters. Confocal microscopy showed matrix to be present over the surface of each cluster as well as around the base apparently anchoring the aggregate to the culture surface. Results suggest the potential for active rearrangement of matrix by granulosa-derived cells during corpus luteum development. (+info)
Relationship between different stages of the corpus luteum and the expression of the peroxisome proliferator-activated receptor gamma protein in bovine large lutein cells. (4/99)Lutein cells produce progestins that support pregnancy. Steroidogenesis requires coordination of the anabolic and catabolic pathways of lipid metabolism. Peroxisome proliferator-activated receptors (PPAR) are transcription factors that are central in the regulation of lipid metabolism. Hence, they may play a role in regulation of the development and regression of the corpus luteum. The present study investigated the expression of PPAR-gamma, n during different stages of the corpus luteum. Lutein cells were isolated mechanically from non-pregnant and pregnant heifers on days 5, 12 and 20 of the oestrous cycle (n = 3 for each day). PPAR-gamma in single cells was analysed by flow cytometry. PPAR-gamma 1 and PPAR-gamma 2 isoforms were distinguished by immunoblotting. The cell cycle of the lutein cells was measured by the flow cytometric quantification of DNA in single cells, using propidium iodide staining after ethanol fixation and RNAse treatment, and by the detection of the proliferating cell nuclear antigen (PCNA). The response of the cells to PPAR-gamma agonist 15-deoxy-delta 12,14 prostaglandin J2 (15dPGJ2, 200 and 490 nmol l-1) with and without changing the cell cycle by the anti-apoptogenic drug aurintricarboxylic acid (ATA, 10 mumol l-1) was used as an in vitro model to study the relationship between the cell cycle and PPAR-gamma. The concentration of PPAR-gamma per cell from non-pregnant heifers was significantly higher on day 5 (3.40 +/- 0.30 fmol) compared with that on day 12 (1.34 +/- 0.18 fmol, P < 0.05) and day 20 (0.55 +/- 0.2 fmol, P < 0.05). In pregnant heifers, the concentration of PPAR-gamma was significantly (P < 0.01) higher than in non-pregnant heifers. A decrease in the PPAR-gamma 1 isoform relative to PPAR-gamma 2 was observed in cells on day 12 of the oestrous cycle compared with day 5. The cell cycle (S phase portion in cells on days 5, 12 and 20: 16 +/- 4%, 6 +/- 4% and 4 +/- 3%, respectively) and the portion of cells with PCNA correlated with the amount of PPAR-gamma in non-pregnant heifers. ATA promoted the S phase in cells of non-pregnant heifers (day 12) and the endogenous agonist of PPAR-gamma, 15dPGJ2, inhibited the response to ATA in a dose-dependent manner, indicating that PPAR-gamma plays a role in the arrest of the cell cycle in lutein cells to maintain their differentiated state. (+info)
The regulation of the human corpus luteum steroidogenesis: a hypothesis? (5/99)The corpus luteum (CL) is an important endocrine organ in the menstrual cycle and in pregnancy. The regulation of its hormonal production has been extensively studied. The steroidogenic abilities of the CL can be rescued by human chorionic gonadotrophin (HCG) but its role in the maintenance of CL function is not clear. We will discuss the hypothesis that there are fetoplacental factors, other than HCG, that modulate CL steroidogenesis. (+info)
Growth hormone: roles in female reproduction. (6/99)GH, as its name suggests, is obligatory for growth and development. It is, however, also involved in the processes of sexual differentiation and pubertal maturation and it participates in gonadal steroidogenesis, gametogenesis and ovulation. It also has additional roles in pregnancy and lactation. These actions may reflect direct endocrine actions of pituitary GH or be mediated by its induction of hepatic or local IGF-I production. However, as GH is also produced in gonadal, placental and mammary tissues, it may act in paracrine or autocrine ways to regulate local processes that are strategically regulated by pituitary GH. The concept that GH is an important modulator of female reproduction is the focus of this review. (+info)
Production and localisation of angiotensin II in the bovine early corpus luteum: a possible interaction with luteal angiogenic factors and prostaglandin F2 alpha. (7/99)The newly formed corpus luteum (CL) rapidly develops after ovulation and has the features of active vascularisation and mitosis of steroidogenic cells. These stage-specific mechanisms also may contribute to gain the function of prostaglandin F2 alpha (PGF2 alpha)-resistant CL at this stage. Recent studies suggest that the vasoactive peptide angiotensin II (Ang II) regulates luteal function. Thus, this study aimed to investigate (i) the expression of angiotensin-converting enzyme (ACE) mRNA by RT-PCR and the ACE protein expression by immunohistochemistry, (ii) the effects of angiogenic growth factors, basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF), on the secretion of Ang II, PGF2 alpha, progesterone and oxytocin (OT), and (iii) the effects of luteal vasoactive peptides (Ang II and endothelin-1 (ET-1)) or OT on the secretion of PGF2 alpha, progesterone and OT from bovine early CL (days 3--4 of the oestrous cycle), and evaluate a possible interaction of these substances with PGF2 alpha. The expression of mRNA for ACE was found in theca interna of mature follicle, early CL and endothelial cells from developing CL as well as pituitary and kidney, but granulosa cells of mature follicle were negative. The immunohistochemical analysis revealed that blood capillaries (endothelial cells) were stained for ACE, but luteal cells were negative in early CL. To examine the effects of substances on the secretory function of the CL, an in vitro microdialysis system was used as a model. The infusion of bFGF and VEGF stimulated Ang II and PGF2 alpha secretion as well as progesterone, but not OT secretion in early CL. The infusion of Ang II after PGF2 alpha infusion continued the stimulatory effect on progesterone and OT release within early CL until 3 h thereafter. However, the infusion of ET-1 alone had no effect on progesterone or OT release. The infusion of luteal peptides such as Ang II and OT stimulated PGF2 alpha secretion, whereas the infusion of ET-1 did not. In conclusion, the overall results of this study indicate that a functional angiotensin system exists on the endothelial cells of early CL, and that angiogenic factors bFGF and VEGF upregulate luteal Ang II and PGF2 alpha secretion, which fundamentally supports the mechanism of progesterone secretion in bovine early CL. This idea supports the concept that the local regulatory mechanism involved in active angiogenesis ensures the progesterone secretion in the developing CL in vivo. (+info)
Characteristics of infertility in female hypothyroid (hyt) mice. (8/99)Female hypothyroid (hyt) mice are infertile, but the reason for this infertility is not yet known. The present study was conducted to determine whether hypothyroidism induced infertility in immature and mature hyt mice. Furthermore, animals were treated with thyroxine and gonadotrophins at different times to determine whether infertility was due to failure of follicular development, implantation or pregnancy. There were no significant differences in the numbers of ovulated eggs induced by gonadotrophin treatment or the percentages of eggs developed in vitro among immature normal controls, hyt and thyroxine-treated hyt mice. Mature hyt mice showed continuous dioestrus, and ovulated significantly fewer eggs after gonadotrophin treatment and failed to establish pregnancy after mating compared with mature control mice. Mature hyt mice had significantly fewer corpora lutea > 500 microm in diameter and significantly lower progesterone concentrations. Thyroxine treatment before mating in hyt mice resulted in well-developed corpora lutea, an increase in progesterone and normal pregnancy, regardless of subsequent thyroxine administration. In conclusion, infertility occurs in mature rather than immature hyt mice, is due to the failure of follicular development and pregnancy, and can be reversed by thyroxine treatment before mating. (+info)
Browsing by Subject LH
Evidence suggests the insulin-like growth factor (IGF) system may be involved in luteal maintenance and regression. However, previous studies have only investigated a few components of the system, primarily in bovine and ...
Corpus Luteum Persisten dan Cara Penanganannya - Berbagi Informasi Mengenai Ilmu Veteriner
Corpus luteum persisten (CLP) merupakan suatu keadaan dimana corpus luteum tidak mengalami regresi dan tetap tinggal di ovarium dalam jangka waktu yang lama (,1 siklus birahi) meskipun hewan tidak bunting. Disebut persisten karena corpus luteum tetap besar ukurannya dan tetap berfungsi menghasilkan progesteron dalam waktu yang lama. Hormon progesteron berfungsi untuk mempertahankan kebuntingan, sehingga adanya progesteron akan menghambat pematangan folikel, ovulasi tidak terjadi dan menyebabkan hewan anestrus.. Corpus luteum persisten berasal dari corpus luteum normal seperti corpus luteum periodikum dan corpus luteum graviditatum. Corpus luteum periodikum adalah corpus luteum yang secara periodik ada pada setiap siklus birahi kemudian mengecil menjadi corpus albican akibat pelisisan karena pengaruh hormon PGF2α yang meningkat di akhir siklus birahi. Corpus luteum graviditatum adalah corpus luteum periodikum yang dipertahankan karena adanya kebuntingan dan lisis setelah hewan melahirkan atas ...
Download Ovarian Follicular And Corpus Luteum Function
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IVF package (includes the tests and medication needed during the IVF process; excludes the consultation, the investigations before the start of the treatment, and the luteal support). باقة أطفال الانابيب (يتضمن عملية سحب البويضات، الارجاع، بالإضافة للأدوية: تحاليل الدم واستشارة المبدئية غير متضمنة في الباقة ...
Impact of angiogenic and innate immune systems on the corpus luteum function during its formation and maintenance in ruminants ...
Tytuł projektu: Udostępnianie cyfrowe zasobów polskich czasopism z nauk przyrodniczych i rolniczych w bazie AGRO. Nr umowy: POPC.02.03.01-00-0038/18-00 (okres realizacji 2018-2021). Kwota dofinansowania: 7 442 980,00 z. W ramach Programu Operacyjnego Polska Cyfrowa na lata 2014-2020, Oś Priorytetowa nr 2 E-administracja i otwarty rząd Działanie nr 2.3 Cyfrowa dostępność i użyteczność informacji sektora publicznego Poddziałanie nr 2.3.1 Cyfrowe udostępnienie informacji sektora publicznego ze źródeł administracyjnych i zasobów nauki (typ projektu: cyfrowe udostępnienie zasobów nauki) Instytucja Finansująca: Centrum Projektów Polska Cyfrowa ...
Histologische und hormonelle Untersuchungen am Corpus luteum des Rindes.<...
TY - JOUR. T1 - Histologische und hormonelle Untersuchungen am Corpus luteum des Rindes.. AU - Okuda, Kiyoshi. PY - 1984. Y1 - 1984. M3 - Article. VL - 19. SP - 169. EP - 181. JO - Zuchthygiene. JF - Zuchthygiene. ER - ...
What is the corpus luteum in the ovary - Health Tips
Thus, it turns out that the corpus luteum in the ovary is formed in the body of a woman every month, and every month resolved.Its perfectly normal to experience and because of this is meaningless.However, there is a likelihood that in case of pregnancy, the corpus luteum does not resolve, and continue to produce progesterone, or after pregnancy the corpus luteum will continue to grow.In this case we speak of the corpus luteum cyst.. cystic corpus luteum usually has a larger than usual size.In this case, the symptoms are the same as during pregnancy: delayed menstruation, nagging feeling in the stomach, its all a result of the work of the hormone.However, pregnancy test gives a negative result.However, most of this state and is not at risk, even during pregnancy.. However, a cyst could still be a problem, if it is too large.In this case, the cyst may burst as a result of mechanical action.For example, if a large impact or physical exertion.And it is internal bleeding, ie the state, threatening ...
Corpus Luteum Cyst Signs And Symptoms - Corpus Luteum Cyst
Corpus luteum cysts could be agonizing and might set off alterations in menstrual bleeding. Generally this type of cyst will dissolve on its own personalized inside of of various months of forming. At other situations, nonetheless, these are in a position to expand becoming rather substantial and heavy. The fat in the cyst may well trigger the ovary to increase for being twisted. A twisted ovary is incredibly agonizing and may phone for well-being-related consideration. And it actually is this ache that typically leads females to look for out the support of their health care medical doctor ...
Corpus Luteum Essay | AnyFreePapers.com
Free essay sample about Corpus Luteum, a hormone-secreting structure, one of medical writing topics. Find more free medicine essays and research papers on our site.
Buglossidium luteum - Tuilleadh faoin speiceas seo: Ainmnithe tráchtála, Córais Tháirgeachta agus Trealaimh Iascaireachta, Scéimeanna cáilíochta agus luachanna cothaitheacha AE, Bearta Caomhnaithe, Caighdeáin Mhargaíochta, Dáileadh agus Gnáthóg Speicis, Tuairiscí ar Speicis, Chomhainmníocht
What Is A Corpus Luteum Cyst? - Blurtit
Answer (1 of 1): A corpus luteum cyst is considered to be a functional, or simple, ovarian cyst. A corpus luteum cyst may develop after an egg has been released from the follicle. Ideally after the release of an egg, the follicle will become what is called the corpus luteum. If fertilization occurs and a pregnancy results, the corpus luteum will work in providing the young embryo with progesterone until the placenta can take over later in the first trimester. However, if pregnancy does not result the corpus luteum should shrink and dissolve. In some cases the corpus luteum will continue to grow and may fill with fluid or blood. It will then be considered to be a corpus luteum cyst. A corpus luteum cyst, although usually rather small, can continue to grow, sometimes causing much pain and discomfort. If the cyst does not dissolve on its own, which is often the case, a simple laparoscopic surgery, to remove the cyst, may be suggested.
Corpus luteum | Radiology Reference Article | Radiopaedia.org
The corpus luteum (plural: corpora lutea) is a temporary endocrine structure involved in ovulation and early pregnancy. During ovulation, the primary follicle forms the secondary follicle and subsequently the mature vesicular follicle. At ovula...
Corpus Luteum - Anatomy & Physiology - WikiVet English
As the blood is resorbed, a solid Corpus Luteum is formed by proliferation of granulosa and theca intera cells as well as blood vessels. This remains on the surface of the ovary ...
Corpus Luteum - Anatomy & Physiology - WikiVet English
As the blood is resorbed, a solid Corpus Luteum is formed by proliferation of granulosa and theca intera cells as well as blood vessels. This remains on the surface of the ovary ...
Corpus luteum cyst - Wikipedia
A Corpus luteum cyst is a type of ovarian cyst which may rupture about the time of menstruation, and take up to three months to disappear entirely. A corpus luteum cyst rarely occurs at age 50+, because eggs are no longer being released in menopausal women. Corpus luteum cysts may contain blood and other fluids. The physical shape of a corpus luteum cyst may appear as an enlargement of the ovary itself, rather than a distinct mass -like growth on the surface of the ovary. This type of functional cyst occurs after an egg has been released from a follicle. The follicle then becomes a secretory gland that is known as the corpus luteum. The ruptured follicle begins producing large quantities of estrogen and progesterone in preparation for conception. If a pregnancy doesnt occur, the corpus luteum usually breaks down and disappears. It may, however, fill with fluid or blood, causing the corpus luteum to expand into a cyst, and stay in the ovary. Usually, this cyst is on only one side, and does not ...
Corpus luteum hormone - definition of corpus luteum hormone by The Free Dictionary
Define corpus luteum hormone. corpus luteum hormone synonyms, corpus luteum hormone pronunciation, corpus luteum hormone translation, English dictionary definition of corpus luteum hormone. n another name for progesterone
Corpora lutea | definition of corpora lutea by Medical dictionary
Looking for online definition of corpora lutea in the Medical Dictionary? corpora lutea explanation free. What is corpora lutea? Meaning of corpora lutea medical term. What does corpora lutea mean?
Recombinant c-AMP dependant Protein Kinase A regulatory subunit 2 alpha Protein
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Sexual Structures - a luteal phase(presence of the corpus luteum These cyclic phases are interrupted only by pregnancy and...
View Notes - Sexual Structures from BIO BSC1010 at Broward College. a luteal phase (presence of the corpus luteum ). These cyclic phases are interrupted only by pregnancy and continue until
The function of progesterone, also known as the corpus luteum hormone.
What role does progesterone play in the desire to have children and in pregnancy? Why progesterone is important for the female cycle...
Anyone have a ruptured corpus luteum cyst during pregnancy | BabyandBump
This will probably be a long one but on Monday 15th I got a positive clearblue 1-2 weeks and then On Tuesday 23rd I nearly collapsed in my garden then...
Corpus luteum cyst
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The function and regulation of the primate corpus luteum during the fertile menstrual cycle.<...
TY - JOUR. T1 - The function and regulation of the primate corpus luteum during the fertile menstrual cycle.. AU - Stouffer, Richard. AU - Ottobre, J. S.. AU - Molskness, T. A.. AU - Zelinski, Mary. PY - 1989. Y1 - 1989. N2 - Figure 2 summarizes the changes in endocrine function and the factors which regulate the primate corpus luteum during the fertile menstrual cycle. The classical luteotropic role of LH during the menstrual cycle is superceded by CG at or before the time of implantation. The role of local factors in modulating luteal function is an area of continued research, as some factors are deemed less important (i.e., estrogen, at least prior to luteal rescue) and other possibilities (progesterone, prostaglandins, and relaxin) arise. The role of local factors has not yet been studied in the corpus luteum following its rescue in early pregnancy. Finally, it is apparent that a different type of shift precedes the recognized luteal-placental shift in early pregnancy, when the corpus ...
View source for Template:Corpus albicans - Embryology
Corpus_Luteum_Development#Corpus_Albicans,corpus albicans]],noinclude>[[Category:Template]][[Category:Term Link]][[Category:Ovary]][[Category:Female]][[Category:Genital]][[Category:Corpus Luteum]],/noinclude ...
Browsing College of Medicine by Subject Corpus Luteum
Marsh, Karen; Sliney, Kyle; La Barbera, Andrew R. (University of Cincinnati. College of Medicine; University of Cincinnati, 2007-02-06) ...
What is Corpus Albicans? - Definition from FertilitySmarts
Corpus Albicans Definition - A corpus albicans is a mass of white scar tissue in the ovary that is formed after the degeneration of the corpus luteum...
Abbildung 2: Hormonal following treatment
Hormonal following treatment with hMG followed by ovulation and Corpus luteum deficiency and abortion in a primary amenorrheic patient with hypopituitary hypogonadism. Mod. from [33 ...
Polütsüstiliste munasarjade sündroom - Vikipeedia
Polütsüstilised munasarjad ehk munasarjade polütsüstiline haigus (lühend PCO) - munasarjad on mahult suurenenud ja sisaldavad arvukalt perifeerselt paiknevaid tsüste, mille suurus võib ulatuda kuni 8 millimeetrini. Tsüstide näol on tegemist lõpuni küpsemata folliikulitega (munarakualged). PCOSi kandvad naised ongi sageli viljatud tulenevalt sellest, et munarakk ei ole lõpuni arenenud, ei teki ovulatsiooni (munarakk ei vabane) ning ei moodustu kollakeha (corpus luteum).  Polütsüstilised munasarjad tekivad, kui munasarjad on mingil põhjusel hakanud tootma ülemäärast kogust androgeene (meessuguhormoone), eelkõige testosterooni, mille põhjuseks võivad olla kas hüpofüüsi poolt toodetud liigne luteiniseeriv hormoon (LH) või liigne insuliin veres (hüperinsulineemia), naiste hulgas, kelle munasarjad on tundlikud liigsele insuliinile.    ...
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Corpus luteum hematoma | definition of corpus luteum hematoma by Medical dictionary
Looking for online definition of corpus luteum hematoma in the Medical Dictionary? corpus luteum hematoma explanation free. What is corpus luteum hematoma? Meaning of corpus luteum hematoma medical term. What does corpus luteum hematoma mean?
The functions of the Corpus luteum. V.-Changes in the sterile horn during pregnancy, and their relation to changes in the...
Evidence as to the precise role of the corpus luteum during pregnancy is contradictory, especially when different species are compared. Most observers agree that the presence of the corpus luteum is necessary during the early stages of gestation. During the second half of pregnancy, however, the removal of the corpus luteum in certain animals does not lead to immediate abortion. In the guinea-pig Loeb and Hesselberg (1917), Herrick (1928) and Courrier, Kehl and Raynaud (1929) have found that pregnancy may continue for some weeks after double ovariectomy, and Ash-Upmark (1926) has listed a large number of clinical cases in which ovariectomy in women has not disturbed pregnancy. The evidence for the rabbit (summarised by Hammond, 1925), is slightly contradictory, but tends to show that the corpus luteum is necessary during the whole of pregnancy, although this was not the conclusion of Niskoubina (1909). In the rat it appears that double ovariectomy towards the end of pregnancy does not always ...
KAKEN - Research Projects | Study on the mechanisms of corpus luteum disappearance during luteolysis (KAKENHI-PROJECT-25660212)
Principal Investigator：OKUDA Kiyoshi, Project Period (FY)：2013-04-01 - 2015-03-31, Research Category：Grant-in-Aid for Challenging Exploratory Research, Research Field：Animal production science
Corpus - Wikipédia
Významy v latinčine: 1. telo, teleso, hmota (napr. corpora individua - nedeliteľná hmota); 2. (ľudské alebo zvieracie) telo, (telesná) postava, v špecifickom použití mŕtve telo, mŕtvola; 3. prenesene: (usporiadané) teleso, celok, kmeň, súbor, zbor, združenie, družstvo, korporácia (napr. magnum corpus - veľké teleso, t. j. vesmír, unius populi corpus - jednotné národné teleso, národný celok, corpus omnis iuris - celok práva, súbor všetkého práva); 4. obrazne: drevo pod kôrou stromu; 5. v stredovekej latinčine: súbor diel jedného autora alebo diel venujúcich sa určitej jednej problematike (napr. Corpus Aristotelicum - súbor diel Aristotela; Corpus Reformatorum - súbor teologických diel protestantských mysliteľov, zástancov reformácie). Pozri: corpus. In Pražák, Josef M. - Novotný, František - Sedláček, Josef. Latinsko-český slovník. 1. (A - K). Praha: Státní pedagogické nakladatelství, c1955. ...
Advaita-l] Shankaracharya on the non-triviality of the entire Vedic corpus
Shankaracharya on the non-triviality of the entire Vedic corpus It is well known that non-Advaitins have a charge on Shankara that he gave undue importance to the Vedanta, Upanishads and trivialized the karma part or veda purva bhaaga. However one who is familiar with the Bhashya and other literature of Shankara would easily conclude that such a charge is born of lack of a proper study and correct understanding of the Bhashyas. Here are some passages from Shankara that give us a glimpse of the heart of Shankara on this matter: न हि वेदवाक्यानां कस्यचिदर्थवत्त्वम् कस्यचिदनर्थवत्त्वमिति युक्तं प्रतिपत्तुम् , प्रमाणत्वाविशेषात् । Brahmasutra Bhashyam 3.2.15 [It is not reasonable to think that some of the Vedic passages are meaningful and some are not. This is because all vedic passages are equally authoritative.] He has ...
Changes in progesterone and oestrogen receptor mRNA and protein during maternal recognition of pregnancy and luteolysis in ewes...
TY - JOUR. T1 - Changes in progesterone and oestrogen receptor mRNA and protein during maternal recognition of pregnancy and luteolysis in ewes. AU - Ott, T. L.. AU - Zhou, Y.. AU - Mirando, M. A.. AU - Stevens, C.. AU - Harney, J. P.. AU - Ogle, T. F.. AU - Bazer, F. W.. PY - 1993. Y1 - 1993. N2 - This study characterized changes in levels of mRNA and protein for endometrial oestrogen receptors (ERs) and progesterone receptors (PRs) during luteolysis and maternal recognition of pregnancy. For cyclic and pregnant ewes, endometrium was collected on days 10, 12, 14, or 16 post-oestrus (4 ewes/day for each status) for the measurement of ER and PR mRNA and protein. The amount of receptor mRNA is expressed in relative units above back-ground, measured from radiographs of dot-blot hybridization of total endometrial RNA with ER and PR cDNAs. At hysterectomy, jugular vein blood samples were collected and assayed for progesterone, total corpus luteum weight was recorded and, in vitro, endometrial ...
Placental lactogen - Wikipedia
Placental lactogen, also called chorionic somatomammotropin, is a polypeptide placental hormone, part of the somatotropin family. Its structure and function is similar to that of growth hormone. It modifies the metabolic state of the mother during pregnancy to facilitate the energy supply of the fetus. For information on the human form, see human placental lactogen. Placental lactogen I and II were identified as prolactin-like molecules that can bind to prolactin receptor with high affinity and mimic the actions of prolactin. These hormones can contribute to lactogenesis, luteal maintenance and progesterone production (in rats) during the later stages of gestation. Placental lactogen I may be important in stimulating mammary cell proliferation and in stimulating some of the adaptations of the maternal lipid and carbohydrate metabolism. ...
Progesterone synthesis by pig corpus luteum tissue during superfusion | Biochemical Journal
A modified superfusion technique is described with which it was demonstrated that the action of gonadotrophin on progesterone secretion by pig corpus luteum tissue is twofold, in that it first stimulates the rapid release of progesterone (either performed or partially synthesized), which is followed by prolonged synthesis of the steroid de novo from acetate.. ...
Estrumate is used as a luteolytic agent in cattle. The luteolytic action of Estrumate can be utilized to manipulate the estrous cycle to better fit certain management practices, terminal pregnancies resulting from mismatings, and to treat certain conditions associated with prolonged luteal function ...
Die Beziehungen zwischen Corpus luteum und Menstruation | SpringerLink
Fraenkel, Dieses Archiv. Bd. 68, 91. Zeitschr. f. Geburtsh. und Gynäk. Bd. 64. Zentralbl. f. Gyn. 1911. Nr. 46.Google Scholar ...
Kegagalan Reproduksi Akibat Corpus Luteum Persisten dan Penanggulangannya pada Sapi Perah Di Kecamatan Pujon Kabupaten Malang...
Dalam usaha perkembangbiakan ternak sapi, berbagai masalah dan hambatan sering ditemukan. Dalam kelompok ternak sapi, kadang - kadang diketemukan sapi yang tidak mampu bereproduksi sama sekali (steril) dans api yang kesuburannya menurun sehingga sulit bereproduksi kembali (infertil). Kegagalan reproduksi ini sering kurang mendapat perhatian, karena pengaruhnya tidak langsung dan tidak jelas meskipun apabial diperhitungkan maka kerugian yang ditimbulkannya cukup besar ...
Immuno-endocrine mechanisms connected with the creation of corpora lutea persistent in animal ovaries - Polish Journal of...
Tytuł projektu: Rozbudowa i przekształcenie bibliograficznej bazy danych AGRO w bazę bibliograficzno-abstraktową z wykorzystaniem oprogramowania YADDA. Nr umowy: POIG 02.03.02-00-031/09 (okres realizacji 2009-2013 ...
Genestran 75mg/ml Solution for Injection 20ml | Genestran 20ml For Sale
Genestran 75mg/ml Solution for Injection 20ml is used to induce luteolysis in mares with functional corpus luteum. Light sweating and diarrhea
Progesterone - Dogtime
A hormone produced by the corpus luteum that prepares a uterus for the impanation of fertilized ovum, maintains pregnancy and also promotes development of the mammary glands.
"The significance of the human corpus luteum in pregnancy maintenance. I. Preliminary studies". Am. J. Obstet. Gynecol. 112 (8 ... The main function of hCG is to sustain the ovarian corpus luteum during pregnancy past the time it would normally decay as part ... For the first 7-9 weeks in humans, the corpus luteum secretes the progesterone necessary to maintain the viability of the ...
The hormone prolactin produced regulates the activation and early maintenance of corpus luteum. The corpus luteum is known as a ... In most species, the corpus luteum is degraded in the absence of a pregnancy. However, in some species, the corpus luteum may ... and instead the corpus luteum persists regardless of pregnancy. Since the corpus luteum is not degraded, it will cause the ... meaning that they will only ovulate and produce a corpus luteum if they are bred. The corpus luteum persists as if the queen ...
Maternal recognition of pregnancy
Pregnancy maintenance relies on the continued production of progesterone which is initially produced by the corpus luteum (CL ... essential for the maintenance of the corpus luteum. Interferon tau is secreted by the trophectoderm of the blastocyst from ... Luteolysis is the regression of the corpus luteum. The process is identified by the decline of progesterone and it signifies ... Progesterone released from the corpus luteum is promoted by human chorionic gonadotrophin (hCG) produced by the cells of the ...
Thus, a single hormone, GnRH1, controls a complex process of follicular growth, ovulation, and corpus luteum maintenance in the ... in terms of menstruation recovery or maintenance, premature ovarian failure and ovulation. GnRH activity influences a variety ...
2018). "Regulation of the porcine corpus luteum during pregnancy". Reproduction. 156 (3): R57-R67. doi:10.1530/rep-17-0662. ... Maintenance of teat order with some evidence for the use of odour cues". Applied Animal Ethology. 8 (4): 347-355. doi:10.1016/ ... in pigs occurs on days 11 to 12 of pregnancy and is marked by progesterone production from a functioning corpus luteum (CL). To ... During mid to late pregnancy, the CL relies primarily on luteinizing hormone (LH) for maintenance until parturition. Animal ...
Human chorionic gonadotropin
... interacts with the LHCG receptor of the ovary and promotes the maintenance of the corpus luteum ... This allows the corpus luteum to secrete the hormone progesterone during the first trimester. Progesterone enriches the uterus ... As HCG supports the corpus luteum, administration of HCG is used in certain circumstances to enhance the production of ...
List of MeSH codes (G08)
... pregnancy maintenance MeSH G08.520.769.520.500 - corpus luteum maintenance MeSH G08.520.769.525 - pregnancy, multiple MeSH ... corpus luteum maintenance MeSH G08.520.440.508.380 - luteolysis MeSH G08.520.440.508.493 - ovulation inhibition MeSH G08.520. ...
"Effect of Restricted Feed Intake on the Sensitivity of the Bovine Corpus Luteum to LH In Vitro". Journal of Animal Science. 41 ... Apgar, Jean (1970-04-01). "Effect of Zinc Deficiency on Maintenance of Pregnancy in the Rat". The Journal of Nutrition. 100 (4 ... "Effect of Restricted Feed Intake on the Sensitivity of the Bovine Corpus Luteum to LH In Vitro" (1975, with Douglas Aspros, ... "Effect of Zinc Deficiency on Maintenance of Pregnancy in the Rat" (1970) "Effect of a Low Zinc Diet during Gestation on ...
... and maintenance, respectively. It also produces relaxin, a hormone responsible for softening of the pubic symphysis which helps ... Once the corpus luteum regresses the remnant is known as corpus albicans. The corpus luteum is essential for establishing and ... The corpus luteum (Latin for "yellow body"; plural corpora lutea) is a temporary endocrine structure in female ovaries involved ... Order of changes in ovary Human ovary with fully developed corpus luteum Luteinized follicular cyst. H&E stain. Corpus luteum ...
Estrogen receptor alpha
... which also lack the corpus luteum, and therefore do not ovulate. This adult ovarian phenotype suggests that in the absence of ... Though its expression in bone is moderate, ERα is known to be responsible for maintenance of bone integrity. It is hypothesized ... ERα is similarly essential in the maturation and maintenance of the male reproductive phenotype, as male ERKO mice are ... which in turn regulate bone development and maintenance. Accordingly, male and female ERKO mice exhibit decreased bone length ...
This in turn reduces progesterone secretion from the corpus luteum in a pregnant female. The corpus luteum is a temporary ... It is not clear how well the mechanisms studied for the onset, maintenance and release from facultative diapause in the rodent ... The main function of the corpus luteum is to secrete progesterone during pregnancy in order to maintain the uterine environment ... Prolactin acting on the corpus luteum causes the progesterone level to be below optimal concentration and therefore induces ...
Corpora lutea are found only in mammals, and in some elasmobranch fish; in other species, the remnants of the follicle are ... They hypothesized that DNA double-strand break repair is vital for the maintenance of oocyte reserve and that a decline in ... Also in the cortex is the corpus luteum derived from the follicles. The innermost layer is the ovarian medulla. It can be hard ... The follicle remains functional and reorganizes into a corpus luteum, which secretes progesterone in order to prepare the ...
... stimulates the ovarian production of estrogens by the granulosa cells of the ovarian follicles and corpora lutea. Some ... Estrogens are responsible for maturation and maintenance of the vagina and uterus, and are also involved in ovarian function, ... In addition, estrogens are responsible for bone maturation and maintenance of bone mineral density throughout life. Due to ... Stimulate endometrial growth Increase uterine growth Increase vaginal lubrication Thicken the vaginal wall Maintenance of ...
Progesterone is the major progestogen produced by the corpus luteum of the ovary in all mammalian species. Luteal cells possess ... maintenance of pregnancy, and preparation of the mammary glands for lactation and breastfeeding following parturition in women ... whereas in other species the corpus luteum remains the primary source of progestogens. In the sheep and human, progesterone is ... A complete luteo-placental shift occurs by day 120-150. The endogenous progestogens are naturally occurring pregnane steroids ...
... which is also secreted by the corpus luteum, contributes to FSH inhibition. Progesterone, secreted by the corpus luteum, ... They hypothesized that DNA double-strand break repair is vital for the maintenance of oocyte reserve, and that a decline in ... A rise in pituitary FSH caused by the disintegration of the corpus luteum at the conclusion of a menstrual cycle precipitates ... Following ovulation, LH stimulates the formation of the corpus luteum. Estrogen has since dropped to negative stimulatory ...
The corpus luteum secretes progesterone. Depending on breed, on average, 16% of mares have double ovulations, allowing them to ... Exercise in excessively high temperatures has been suggested as being detrimental to pregnancy maintenance during the embryonic ... It decreases 12-15 days after ovulation, when the corpus luteum begins to decrease in size. Prostaglandin: secreted by the ... causes luteolysis and prevents the corpus luteum from secreting progesterone eCG - equine chorionic gonadotropin - also called ...
... im Besonderen des Hormons des Corpus luteum. I. Der biologische Test für das Luteumhormon (das spezielle Hormon des Corpus ... Articles with multiple maintenance issues, All articles with vague or ambiguous time, Vague or ambiguous time from June 2017, ... luteum) am infantilen Kaninchen". Zentralblatt für Gynäkologie. 54: 2757-2770. "Clauberg's method, alt. Clauberg's test". ...
Endocrinology of reproduction
Zeleznik, A., Fairchild Benyo, D. Control of follicular development, corpus luteum function and the recognition of pregnancy in ... crucial for the maintenance of the endometrium. hCG secreted by cytotrophoblastic cells of the blastocyst controls endometrial ... The dramatic increase in trophoblastic and corpus luteal hCG synthesis signals both blastocyst and corpus luteal production of ... The role of lipoproteins in the regulation of progesterone secretion by the human corpus luteum. Fertil Steril, 38, 303-311 ...
"The lncRNA Neat1 Is Required for Corpus Luteum Formation and the Establishment of Pregnancy in a Subpopulation of Mice". ... Some studies demonstrate that NEAT1 RNA is essential for the formation and maintenance of paraspeckles. Thus, this novel ...
Epigenetics of human development
Paraspeckles form a significant portion of the corpus luteum of the ovary; in Neat1 impaired mice, corpus luteum formation is ... PRC2 has been shown in many experiments to be necessary for the proper formation of organs, starting with the maintenance of ... December 2014). "The lncRNA Neat1 is required for corpus luteum formation and the establishment of pregnancy in a subpopulation ... Articles with multiple maintenance issues, Epigenetics, Human development). ...
The hormones produced by the corpus luteum also suppress production of the FSH and LH that the corpus luteum needs to maintain ... The uterine cycle governs the preparation and maintenance of the lining of the uterus (womb) to receive an embryo. These cycles ... which is very similar to LH and preserves the corpus luteum. During the first few months of pregnancy, the corpus luteum ... If implantation does not occur within about two weeks, the corpus luteum degenerates into the corpus albicans, which does not ...
... is synthesized by corpora lutea of several species, including ruminants and primates. Along with estrogen, it is ... Oxytocin is involved in the initiation of human maternal behavior, not its maintenance; for example, it is higher in mothers ... including in females in the corpus luteum and the placenta; in males in the testicles' interstitial cells of Leydig; and in ... "Post-translational processing of oxytocin-neurophysin prohormone in the ovine corpus luteum: activity of peptidyl glycine alpha ...
Pharmacology of cyproterone acetate
... and is notably equivalent to the total production of progesterone by a corpus luteum throughout the course of a woman's entire ... Dosages of CPA of 12.5 to 25 mg/day have been used as a maintenance dosage for testosterone suppression in men with sexual ... but continuing the use of 12.5 to 25 mg CPA a day as a maintenance dose (Bradford & Pawlak, 1993a). Bradford JM, Pawlak A ( ...
... to allow generation of a normal preovulatory LH surge to occur will ovulation take place with the formation of a corpus luteum ... In fact, it was found that among the Hutterites, more frequent bouts of nursing, in addition to maintenance of feeding in the ...
Human reproductive ecology
Due to these hormonal changes, the corpus luteum gets destroyed. The elevated level of FSH helps to recruit a cohort of the FSH ... The key components of fecundity are a person's reproductive maturation and the maintenance of their reproductive system. In ... maintenance, or reproduction, as best needed for survival. Most research focuses on female puberty because it is easier to ... maintenance, and reproduction at the various life stages. Life history theory is applied to reproductive ecology in the ...
... seeing how BST has a stimulatory effect of progesterone on the corpus luteum. Though approved by the FDA in 1993, rBST has been ... This is due to a lower milk yield per cow due to the pasture-based system which is attributed with a greater maintenance energy ... Overall, milk and dairy products provide essential nutrients and related benefits in health maintenance and the prevention of ...
Reproductive biology of Chamaeleo pumilis pumilis with special reference to the role of the corpus luteum and progesterone. ... Articles with multiple maintenance issues, Articles with hCards, All articles lacking reliable references, Articles lacking ...
... the requirements-in line with the most recent findings of the KAUFMANN Clinic-of cases marked by deficiency of corpus luteum ... It is used in the treatment of menopausal symptoms at a dosage of 1 to 1.66 mg initially and 0.33 to 1 mg for maintenance two ...
During the luteal phase following ovulation LH and FSH cause the post-ovulation ovary to develop into the corpus luteum which ... Articles with multiple maintenance issues, Articles containing potentially dated statements from 2010, All articles containing ... The production of progesterone inhibits the LH and FSH hormones which (in a cycle without pregnancy) causes the corpus luteum ...
"Entry for Spilarctia luteum". Database of the World's Lepidopteran Hostplants. Natural History Museum. Retrieved 18 October ... Parasitism implies host-parasite coevolution, including the maintenance of gene polymorphisms in the host, where there is a ... the Hippocratic Corpus describes human bladder worm. The medieval Persian physician Avicenna recorded human and animal ...
Mather Air Force Base
In 1976, following the decommissioning of Training Squadron Twenty-Nine (VT-29) at Naval Air Station Corpus Christi, Texas, the ... Dozens of wooden buildings served as headquarters, maintenance, and officers' quarters. Enlisted men had to bivouac in tents. ... Yellow Mariposa Lily: Calochortus luteus, GlobalTwitcher.com, ed. N. Stromberg Archived 4 October 2011 at the Wayback Machine " ...
List of Dutch discoveries
De Graaf was the first to observe changes in the ovary before and after mating and describe the corpus luteum. From the ... Articles with multiple maintenance issues, Use dmy dates from January 2022, Lists of inventions or discoveries, Netherlands ...
LPS-mediated effects and spatio-temporal expression of TLR2 and TLR4 in the bovine corpus luteum - Zurich Open Repository and...
Maintenance Infos LPS-mediated effects and spatio-temporal expression of TLR2 and TLR4 in the bovine corpus luteum ... LPS-mediated effects and spatio-temporal expression of TLR2 and TLR4 in the bovine corpus luteum. Reproduction, 151:391-399. ... transiently suppresses the structure and function of the bovine corpus luteum (CL). This is associated with increased release ... transiently suppresses the structure and function of the bovine corpus luteum (CL). This is associated with increased release ...
Details for: Maternal recognition of pregnancy and maintenance of the corpus luteum : › WHO HQ Library catalog
Luteal Phase Dysfunction Workup: Laboratory and Imaging Studies, Procedures
The significance of the human corpus luteum in pregnancy maintenance. I. Preliminary studies. Am J Obstet Gynecol. 1972 Apr 15 ... The corpus luteum. Hum Reprod. 1988 Feb. 3(2):153-6. [QxMD MEDLINE Link]. ... Pulsatile progesterone secretion: its relevance to clinical evaluation of corpus luteum function. Fertil Steril. 1984 Jan. 41(1 ... Corpus luteum function and regression. Reprod Med Rev. 1993. 2:153-80. ...
The ovine corpus luteum angiogenesis model: a tool for developing imaging technology<...
... is a transient gland in the ovary that is formed to produce the hormone progesterone essential for maintenance of pregnancy. ... The ovine corpus luteum angiogenesis model: a tool for developing imaging technology. In 2014 36th Annual International ... The ovine corpus luteum angiogenesis model : a tool for developing imaging technology. / Sboros, Vassilis. ... T1 - The ovine corpus luteum angiogenesis model. T2 - 2014 36th Annual International Conference of the IEEE Engineering in ...
British Library EThOS: Investigations of formation and function of normal and abnormal luteal tissue in the bovine
Initially, the formation, maintenance and lysis of the corpus luteum were investigated in a field trial. Heifers were subjected ... Gross macroscopic morphology of the corpus luteum was used as a means of evaluating the stage of the cycle of the animals. The ... However it did show the presence of these enzymes in both the normal and the abnormal corpus luteum. It was concluded that ... The work included in this thesis describes studies of the cyclic bovine corpus luteum. Both normal and abnormal luteal ...
IJMS | Free Full-Text | The Roles of Sex Hormones in the Course of Atopic Dermatitis
Are there relationships between the luteal size, luteal morphoechogenicity by ultrasound and plasmatical progesterone...
Corpus luteum (CL) synthesizes progesterone (P4), which has a major function in maintenance of pregnancy in equine females and ... Corpus luteum echogenicity had a tendency to increase from D0 to D9. Progesterone concentrations were , 2,16 ng/ml until D3, ... as well as plasma P4 concentrations of corpus luteum from recipient mares for nine days after ovulation (D0). Therefore, 57 ...
A inflamação uterina interfere na luteogênese da égua?
After the ovulation of the ovulatory follicle in the mare, the formation of the corpus luteum (CL) occurs. This transitory ... This transitory endocrine gland is responsible of producing progesterone (P4), needed for the maintenance of the gestation. The ... After the ovulation of the ovulatory follicle in the mare, the formation of the corpus luteum (CL) occurs. ... endocrine gland is responsible of producing progesterone (P4), needed for the maintenance of the gestation. The objective of ...
MH DELETED MN ADDED MN
Corpus Luteum Maintenance G8.686.785.760.690.355.500 G8.686.784.690.355.500 G8.686.785.760.769.520.500 G8.686.784.769.520.500 ... Body Weight Maintenance G7.700.320.249.314.120.250 G7.345.249.314.120.250 Bombesin D12.776.641.650.85 D12.776.631.650.85 Bone ... Pregnancy Maintenance G8.686.785.760.769.520 G8.686.784.769.520 Pregnancy Outcome G8.686.785.760.769.530 G8.686.784.769.530 ...
SciELO - Brazil - Analysis of the reproductive stage and ovarian histomorphometry of |i|Dermanura cinerea|/i| (Chiroptera:...
... matures and corpus luteum varied according to the period (Table 2). Therefore, the presence of the corpus luteum indicates the ... which they get energy for their maintenance and reproductive activities (Fleming et al. 1972Fleming T.H., Hooper E.T. & Wilson ... Thus, the corpus luteum formed after ovulation, consists of a temporary endocrine gland that is related to the production of ... Table 2. Number of ovarian follicles types in different maturation stages and corpus luteum of Dermanura cinerea collected ...
Volume 76 Issue 3 | Biology of Reproduction
In the corpus luteum, PDGFA, PDGFB, PDGFC, and PDGFRA were localized to a population of luteal parenchymal/steroidogenic cells ... indicating a possible role for PDGF receptor activity in maintenance of the ovarian vasculature. ... Data were normalized to the decrease in plasma progesterone to ,1 ng/ml (Day 0 or Hour 0). Blood flow in the corpus luteum (CL ... In this study, the expression of the family of PDGFs and PDGFRs in the ovarian corpus luteum were identified and characterized ...
The Journal of Toxicological Sciences
Menstrual Cycle And Its Effect On Metabolism - Weightloss Yogi
It aids in the maintenance of the corpus luteum and the thickness of the uterine lining. ... The corpus luteum develops after the follicle has released its egg. This structure secretes hormones, primarily progesterone ... According to research, if you do not become pregnant, the corpus luteum shrinks and resorbs. Therefore, this causes a drop in ...
The Mare Mystique - Horse Illustrated
Corpus Luteum Maintenance Entry term(s). Luteal Function Maintenance Luteal Maintenance Luteum Maintenance, Corpus Luteum ... Luteal Function Maintenance. Luteal Maintenance. Luteum Maintenance, Corpus. Luteum Maintenances, Corpus. Maintenance of Luteal ... Corpus Luteum Maintenance - Preferred Concept UI. M0005209. Scope note. Process of maintaining the functions of CORPORA LUTEA, ... Process of maintaining the functions of CORPORA LUTEA, specifically PROGESTERONE production which is regulated primarily by ...
The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the ... It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. ... The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the ... It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. ...
IMSEAR at SEARO: Luteal function during the periimplantation period and requirement for estrogen for implantation and pregnancy...
Corpus luteum is the principle source of both progesterone and estrogen produced during the periimplantation period and ... This has lead to questioning the need for estrogen in the maintenance of early pregnancy. Recent work using Zuclomiphene, an ... In a fertile cycle the corpus luteum is apparently rescued from luteolysis by chorionic gonadotropin secreted by the implanted ... This suggested that the corpus luteum is receiving some stimulatory signal from the blastocyst even prior to implantation. The ...
Reproducción Animal Tropical - TROPSYNC
Maintenance or regression of the corpus luteum during multiple decisive periods of bovine pregnancy Meidan, R.; Ochoa, J.; ... Mechanisms for rescue of corpus luteum during pregnancy: gene expression in bovine corpus luteum following intrauterine pulses ... Mechanisms for rescue of corpus luteum during pregnancy: gene expression in bovine corpus luteum following intrauterine pulses ... Corpus luteum (2)interferon-tau (2)luteolysis (2)Blastocyst (1)Cabras (1)CASA (1)corpus luteum (1)cryopreservation (1)Dairy ...
Morbid Obesity and Female Reproductive Health | Laparoscopic.MD
High levels of insulin can impair the progesterone secreting function of the corpus luteum, and act upon the ovaries to trigger ... both of which are essential for maintenance and further development of the endometrial lining in readiness for conception. Any ... After ovulation the remainder of the follicle, now called the corpus luteum, begins to produce progesterone, along with smaller ...
Genome-Wide Gene Expression Analysis Reveals a Dynamic Interplay between Luteotropic and Luteolytic Factors in the Regulation...
Although LH is essential for survival and function of the corpus luteum (CL) in higher primates, luteolysis occurs during ... responsive gene expression changes resulting in luteal rescue crucial for the maintenance of early pregnancy. (Endocrinology ... Expression Analysis Reveals a Dynamic Interplay between Luteotropic and Luteolytic Factors in the Regulation of Corpus Luteum ... Expression Analysis Reveals a Dynamic Interplay between Luteotropic and Luteolytic Factors in the Regulation of Corpus Luteum ...
Luteal Phase Dysfunction Medication: Hormone replacements
The significance of the human corpus luteum in pregnancy maintenance. I. Preliminary studies. Am J Obstet Gynecol. 1972 Apr 15 ... The corpus luteum. Hum Reprod. 1988 Feb. 3(2):153-6. [QxMD MEDLINE Link]. ... Pulsatile progesterone secretion: its relevance to clinical evaluation of corpus luteum function. Fertil Steril. 1984 Jan. 41(1 ... Corpus luteum function and regression. Reprod Med Rev. 1993. 2:153-80. ...
Search Results | DrugBank Online
Endogenously produced HCG interacts with the LHCG receptor of the ovary and promotes the maintenance of the corpus luteum ... This allows the corpus luteum to continuously secrete the hormone progesterone during the first... ... Endogenously produced HCG interacts with the LHCG receptor of the ovary and promotes the maintenance ... the hormone ... progesterone during the first trimester, which is required for maintenance of the uterus and … Matched Categories: … Amino ...
Interferon-Tau regulates a plethora of functions in the corpus luteum
... DOMESTIC ANIMAL ENDOCRINOLOGY 2022, 78. ... The purpose of this review is to highlight the importance of IFNT in CL main-tenance, acting directly and in a cell-specific ... Interferon-Tau regulates a plethora of functions in the corpus luteum Citation:. Meidan, R. ; Basavaraja, R. Interferon-Tau ... The corpus luteum (CL) plays a vital role in regulating the reproductive cycle, fertility, and in maintaining pregnancy. ...
People Tag Search Results | The Huck Institutes
Postpartum Psychiatric Disorders | Concise Medical Knowledge
and progesterone Progesterone The major progestational steroid that is secreted primarily by the corpus luteum and the placenta ... Family history Family History Adult Health Maintenance. of psychiatric illnesses. *Previous episode of PP psychiatric disorder ... Severe insomnia Insomnia Insomnia is a sleep disorder characterized by difficulty in the initiation, maintenance, and ... Insomnia Insomnia Insomnia is a sleep disorder characterized by difficulty in the initiation, maintenance, and consolidation of ...
Function of the corpus luteum in beef heifers is affected by acute submaintenance feeding but is not correlated with residual...
Function of the corpus luteum in beef heifers is affected by acute submaintenance feeding but is not correlated with residual ... At 14.4 0.1 mo of age, all heifers were provided a restricted amount of feed to supply 40% of their maintenance energy ... Function of the corpus luteum in beef heifers is affected by acute submaintenance feeding but is not correlated with residual ...
Corpus luteum release both estrogen and progesterone.. * Progesterone is known as maintenance of pregnancy hormone , it ... 2. LH hormone develop corpus luteum. it is modification of graafian follicle. ... This phase is completely control by corpus luteum .. * ... Release from ovarian corpus luteum and work upon uterine ...
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Pesquisa | Prevenção e Controle de Câncer
The corpus luteum (CL) is a transitory endocrine gland; the dynamic nature of the CL makes it a candidate for regulation by ... Rescue of the CL from luteolysis is essential for the maintenance of pregnancy in all eutherian mammals. Using next generation ... Regulating life or death: potential role of microRNA in rescue of the corpus luteum. ... particularly in the maintenance of embryonic stem cell pluripotency, development of primordial germ cells, and differentiation/ ...
Human Reproduction Class 12 Important Questions And Answers MCQ PDF - NEET EXAM BOOSTER
Therefore, the corpus luteum has a long life in pregnancy. In the absence of the fertilisation, upholding of the corpus luteum ... It discharges the large quantities of the progesterone hormone which is required for the maintenance of the endometrium wall. ... The LH hormone causes conversion of the empty follicle in the form of the corpus luteum. The Corpus luteum produces the ... Q.3. Why the corpus luteum stay active throughout pregnancy and in the absence of fertilization, is active only for 10-12 days ...
- The ovine corpus luteum (CL) is a transient gland in the ovary that is formed to produce the hormone progesterone essential for maintenance of pregnancy. (hw.ac.uk)
- Corpus luteum (CL) synthesizes progesterone (P4), which has a major function in maintenance of pregnancy in equine females and also enables the application of biotechnologies of reproduction. (usp.br)
- This transitory endocrine gland is responsible of producing progesterone (P4), needed for the maintenance of the gestation. (ufrgs.br)
- The following results were observed: 1) disturbance of the estrous cycle, 2) hypofunctional changes in the corpus luteum in the ovary, and the epithelium, endometrium and uterine gland in the uterus with a decrease in the serum progesterone level and 3) hypercalcemia with a decrease in calcitonin or PTH levels in serum with morphological changes including atrophy and cyst-formation in the parathyroid. (go.jp)
- Process of maintaining the functions of CORPORA LUTEA , specifically PROGESTERONE production which is regulated primarily by pituitary LUTEINIZING HORMONE in cycling females, and by PLACENTAL HORMONES in pregnant females. (bvsalud.org)
- In a fertile cycle the corpus luteum is apparently rescued from luteolysis by chorionic gonadotropin secreted by the implanted blastocyst, In the bonnet monkey the serum progesterone titers during the luteal phase of a fertile cycle seems higher compared to that of nonmated cycling monkeys. (who.int)
- Corpus luteum is the principle source of both progesterone and estrogen produced during the periimplantation period and dysruption of luteal function, brought about by either lutectomy or ovariectomy or luteinizing hormone antiserum treatment, followed by progesterone supplementation leads to maintenance of pregnancy. (who.int)
- Maintenance of the corpus luteum (CL) during pregnancy is essential for continuing the elevated circulating progesterone (P4) that is required to maintain pregnancy. (ufps.edu.co)
- After ovulation the remainder of the follicle, now called the corpus luteum, begins to produce progesterone, along with smaller quantities of estrogen, both of which are essential for maintenance and further development of the endometrial lining in readiness for conception. (laparoscopic.md)
- This allows the corpus luteum to continuously secrete the hormone progesterone during the first. (drugbank.com)
- Corpus luteum release both estrogen and progesterone. (medieducator.com)
- Progesterone is known as maintenance of pregnancy hormone , it responsible for increase myometrium bleeding, increase endometrium nutrition , inhibit uterine contraction. (medieducator.com)
- Progesterone is also used to prevent early pregnancy failure in women with corpus luteum insufficiency, including women undergoing assisted reproductive technology (ART). (empowerpharmacy.com)
- Endogenous progesterone is responsible for inducing secretory activity in the endometrium of the estrogen-primed uterus in preparation for the implantation of a fertilized egg and for the maintenance of pregnancy. (empowerpharmacy.com)
- Progesterone (P4) plays a pivotal role in maintenance of pregnancy in many mammalian species. (scimedjournal.org)
- Maintenance of progesterone secretion by the corpus luteum (CL) ensures establishment of pregnancy. (elsevier.com)
- In the domestic dog, corpora lutea (CL) are the only source of progesterone (P4), both in pregnant and non-pregnant cycles because there is no placental steroidogenesis. (biomedcentral.com)
- Progesterone secreted by the corpus luteum and then by the placenta is a key hormone during pregnancy and is required for implantation and maintenance of pregnancy. (medscape.com)
- Progesterone, which is produced by the corpus luteum, is the primary hormone that is responsible for the recognition and maintenance of early pregnancy up to about 150 days. (okstate.edu)
- During the second half of a woman's cycle, known as the luteal phase, progesterone is produced by the corpus luteum (remnants of the follicle from which the egg was released). (parisnaturalfoods.com)
- Maintenance of the endometrium (what is shed during menstruation) is dependent on progesterone. (parisnaturalfoods.com)
- And an increase in its level can cause hormonal imbalance, as a result of which a lack of progesterone, the main hormone of the ovarian corpus luteum, will develop, contributing to the possibility of pregnancy and its further maintenance. (pictolic.com)
Bovine corpus luteum2
- Considering the importance of the CL and its anatomical and physiological features to achieve normal pregnancy, our aims were to determine the size and morphoechogenicity (ME), as well as plasma P4 concentrations of corpus luteum from recipient mares for nine days after ovulation (D0). (usp.br)
- After the ovulation of the ovulatory follicle in the mare, the formation of the corpus luteum (CL) occurs. (ufrgs.br)
- Thus a single hormone, GnRH, controls a complex process of follicular growth, ovulation, and corpus luteum maintenance in the female, and spermatogenesis in the male. (rawsgearpharma.com)
- In the morphometric analysis, it was considered: The area of the ovary (measured in square millimeter), Quantification of different types of ovarian follicles (unilaminar and multilaminar primary follicles, antral and matures) and corpus luteum, as well as the area of each by those different follicles (measured in square micrometer) The results indicated that 16 females were inactive, 5 were lactating, 4 were pregnant and no post-lactating. (scielo.br)
- Endogenously produced HCG interacts with the LHCG receptor of the ovary and promotes the maintenance of the corpus luteum during the beginning of pregnancy. (drugbank.com)
- The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. (bvsalud.org)
- Outside the brain, oxytocin-containing cells have been identified in several diverse tissues including the corpus luteum the interstitial cells of Leydig, the retina, the adrenal medulla, the placenta, the thymus and the pancreas. (allaboutheaven.org)
- From approximately 150 days until term, the source of progestins for pregnancy maintenance is the placenta. (okstate.edu)
- Although no difference in response and formation of luteal tissue could be found between groups treated differently, there was indications that corpora lutea induced by an injection of either a prostaglandin F2alpha analogue or a GnRH analogue have a shorter life-span than spontaneous corpora lutea. (bl.uk)
- The ability to maintain luteal functions is important in PREGNANCY MAINTENANCE . (bvsalud.org)
- IMSEAR at SEARO: Luteal function during the periimplantation period and requirement for estrogen for implantation and pregnancy maintenance in the nonhuman primate. (who.int)
- An attempt has been made in this paper to review our present understanding of luteal function during the periimplantation period and in particular hormonal requirement for implantation and maintenance of early pregnancy in the non-human primate. (who.int)
- Collectively, the findings suggest that curtailment of expression of downstream LH-target genes possibly through PGF(2 alpha) action on the CL is among the mechanisms underlying cross talk between the luteotropic and luteolytic signaling pathways that result in the cessation of luteal function, but hCG is likely to abrogate the PGF(2 alpha)-responsive gene expression changes resulting in luteal rescue crucial for the maintenance of early pregnancy. (iisc.ac.in)
- Key luteolytic genes such as endothelin-1 (EDN1), transforming growth factor-B1 (TGFB1), thrombospondins (THBSs) 1&2 and serpine-1 (SERPINE1) were downregulated in luteal en-dothelial cells. (huji.ac.il)
- We report the differential gene expression associated with maintenance and cessation of luteal function in pregnant and non-pregnant dogs. (biomedcentral.com)
- The lifespan of corpora lutea (CL) in non-pregnant bitches often outlasts the luteal duration in pregnant animals [ 4 ]. (biomedcentral.com)
- Release from ovarian corpus luteum and work upon uterine myometrium. (medieducator.com)
- The majority of roe deer have two corpora lutea that secrete P4. (scimedjournal.org)
- The follicle that ovulated at the end of estrus develops into a structure call the corpus luteum (CL). (okstate.edu)
- It was concluded that further work was needed in this area in order to unveil the molecular mechanisms controlling formation, function and regression in both the normal and the abnormal corpus luteum. (bl.uk)
- The main objective of this study was to evaluate the effect of a second treatment with prostaglandin F2α (PGF) during Ovsynch on regression of the corpus luteum (CL) and on fertility to the timed artificial insemination. (ufps.edu.co)
- In ruminants, there are specific times during the estrous cycle or pregnancy when the corpus luteum (CL) may undergo regression. (ufps.edu.co)
- Corpus luteum function and regression. (medscape.com)
- If the mare is not pregnant, the corpus luteum will regress and follicular development will proceed at the end of diestrus. (okstate.edu)
- Subsequently investigations of the structure and function of the corpus luteum were undertaken using samples collected at a local abbatoir. (bl.uk)
- In addition the injection of a GnRH analogue during mid-dioestrus was used in two cows to monitor the formation and function of accessory corpora lutea. (bl.uk)
- Although LH is essential for survival and function of the corpus luteum (CL) in higher primates, luteolysis occurs during nonfertile cycles without a discernible decrease in circulating LH levels. (iisc.ac.in)
- Function of the corpus luteum in beef heifers is affected by acute submaintenance feeding but is not correlated with residual feed intake. (tamu.edu)
- The information obtained was compared to results of studies of corpora lutea formed following an injection of a prostaglandin analogue during either early or late dioestrus. (bl.uk)
- Oxytocin is synthesized by the corpus luteum. (allaboutheaven.org)
- At 14.4 0.1 mo of age, all heifers were provided a restricted amount of feed to supply 40% of their maintenance energy requirements for 21 d. (tamu.edu)
- PREGNANCY maintenance, and the development of mammary tissue for MILK production. (bvsalud.org)
- Maternal recognition of pregnancy and maintenance of the corpus luteum : proceedings of a workshop held in Jerusalem, Israel, March 1988 / edited by M. Shemesh and Barbara J. Weir. (who.int)
- Initially, the formation, maintenance and lysis of the corpus luteum were investigated in a field trial. (bl.uk)
- Gross macroscopic morphology of the corpus luteum was used as a means of evaluating the stage of the cycle of the animals. (bl.uk)
- The corpus luteum (CL) plays a vital role in regulating the reproductive cycle, fertility, and in maintaining pregnancy. (huji.ac.il)
- 2. LH hormone develop corpus luteum. (medieducator.com)
- maintenance in the female, and spermatogenesis in the male. (peptide-hormone.com)
- It is secreted from the corpus luteum in response to luteinizing hormone. (empowerpharmacy.com)
- Inherited mtc results from persistent corpus luteum. (berea.edu)
- Sexual stimulation which involves coitus without orgasm and thus 'infertile' coitus, results in the maintenance of the corpus luteum in women. (allaboutheaven.org)
- However it did show the presence of these enzymes in both the normal and the abnormal corpus luteum. (bl.uk)
- Primary research interests focus on the interactions between steroidogenic and immune cells, and the role of microRNA in development and maintenance of the corpus luteum. (psu.edu)
- Coaching about medication administration, maintenance of bp, and smoking status to prevent mucosal candidiasis, which commonly include bibasilar inspiratory crackles. (berea.edu)
- Corpus luteum echogenicity had a tendency to increase from D0 to D9. (usp.br)
- effect on the maintenance of pregnancy (treatment for 2 weeks before mating and during the gestation period). (go.jp)