Vitro follicle. Medical search. Frequent questions

The ivF outcomes obtained by using the specie-specific (oFSH) or the trans-species chorionic gonadotropin (PMSG) were analyzed after 14 days of culture by comparing follicle/oocyte growth, timing and percentage (%) of antrum differentiation as well as % of Methaphase II (MII) oocytes after iv Maturation (IVM). (unipg.it)
It includes all the steps from the preparation of the in vitro maturation media to the post-warming culture. (jove.com)
The protocol include all the procedures from in vitro maturation, vitrification, warming, and post-warming culture. (jove.com)
After recovering the Cumulus oocytes complex, where matured in vitro for 24 hours in static a condition that include for juvenile oocyte, the supplementation with hundred micromolar of trehalose in maturation medium. (jove.com)
Following in vitro maturation, the oocytes were denuded of Cumulus cells mechanically by gently pipetting and examined under stereo microscope, with 60x magnification. (jove.com)
Throughout a female's reproductive lifespan, the ovaries undergo continual structural changes that are crucial for the maturation of ovarian follicles and the production of sex steroid hormones. (mdpi.com)
Therefore, the most suitable fertility preservation options to prepubertal girls are (1) ovarian tissue freezing and autotransplantation, (2) in vitro maturation, and (3) ovarian protection techniques. (uni-koeln.de)
In this study, we first examined the ovulation of Ciona intestinalis Type A by monitoring follicle rupture in vitro, identifying a novel mechanism of neuropeptidergic regulation of oocyte maturation and ovulation. (elifesciences.org)
Moreover, in spite of the early success of equine oocyte in vitro maturation [ 2 ], no relevant research on the issue has been reported in the horse for some time. (ivis.org)
In vitro maturation strategies are currently being optimized in animal models. (elifesciences.org)
Our granulosa-like cells form ovary-like organoids (ovaroids) when aggregated with hPGCLCs, and recapitulate key ovarian phenotypes including support of germ cell maturation, follicle formation, and steroidogenesis. (biorxiv.org)
GH receptor is expressed in human oocytes and cumulus cells, [ 12 , 13 ] and GH has been shown to promote in vitro nuclear maturation of denuded human oocytes. (medscape.com)
Normal maturation and growth of fullestrogenreceptoractivation.Silybin andfromthefirstdayofovarianstimula- oocytesdependsonadequatesupport B,oneofthecomponentsofsilymarin, tion,onegroupofpatientsreceivedgo- from ovarian granolusa cel s of the has(probable)weakestrogenreceptor nadotropinplussilymarin(70mg×3/ follicles [ 1 ]. (who.int)

This is done by hyperstimulation of the ovary to produce multiple ovarian follicles that will release oocytes into the fallopian tubes. (wikipedia.org)
Because of a concern exists on the possible re-introduction of malignant cells following ovarian transplantation, in vitro (iv) culture of early stage follicles still remains a potential alternative to obtain fertilizable oocytes that contribute to biological offspring. (unipg.it)
In order to compare the degree of meiotic competence, MII oocytes obtained adopting an advanced IVM, consisting of cumulus oocytes complexes co-cultured with walls antral follicle-derived somatic cells, were analyzed. (unipg.it)
Of note, the MII oocytes were all isolated by early antral follicles with Δ%>40 (p<0.01). (unipg.it)
Detection of DNA damage in oocytes of small ovarian follicles following phosphoramide mustard exposures of cultured rodent ovaries in vitro. (hal.science)
Results suggest oocytes can detect PM-induced damage at or below concentrations which cause significant follicle loss, and there are quantitative species-specific differences in sensitivity. (hal.science)
In vitro clinic: No oocytes recovered. (jax.org)
Histology evaluation: Tiny ovaries with no growing oocytes or follicles (see 3). (jax.org)
This study was conducted to evaluate in vivo and in vitro development of in vitro-matured equine oocytes fertilized by intracytoplasmic sperm injection. (bioone.org)
Oocytes were collected from slaughterhouse-derived ovaries, matured in vitro, and injected with frozen-thawed stallion sperm. (bioone.org)
Today, the most practical use of OPU or transabdominal follicle aspiration is to recover in vivo matured oocytes [ 9 ] for oocyte transfer. (ivis.org)
With ART, the process of sexual intercourse is bypassed and fertilization of the oocytes occurs in the laboratory environment (i.e., in vitro fertilization ). (wikipedia.org)
Lauritzen, J. G. Ultrasonically guided percutaneous aspiration of human follicles under local anesthesia: a new method of collecting oocytes for in vitro fertilization . (bvsalud.org)
The oocytes compete with one another to become the dominant follicle and eventually ovulate to be released as an egg capable of being fertilized. (medscape.com)
[ 14 ] In addition to its direct effect on the oocytes and/or cumulus cells, GH may also influence oocyte quality indirectly, through activation of insulin-like growth factor-I synthesis or promotion of follicle-stimulating hormone-induced ovarian steroidogenesis (reviewed in [ 15 ] ). (medscape.com)

Participants/materials, setting, methods: Preantral follicles, mechanically isolated from slaugterhoused prepubertal ovaries, were incubated as 3D single follicle culture and exposed to 25 ug oFSH or to different PMSG doses (from 0,4 to 40 IU/ml). (unipg.it)
Using a model ovotoxic alkylating drug, cyclophosphamide (CPA), and its active metabolite, phosphoramide mustard (PM), we previously showed that PM (≥3μM) caused significant follicle loss in postnatal day 4 (PND4) mouse ovaries in vitro. (hal.science)
Exposure of cultured PND4 mouse ovaries to 3 and 0.1μM PM induced significant losses of primordial and small primary follicles, respectively. (hal.science)
PM also significantly decreased primordial follicle numbers (≥30μM) and increased γH2AX foci (≥3μM) in cultured PND4 Sprague-Dawley rat ovaries. (hal.science)
Histology evaluation: Tiny ovaries with some follicle activity (see 3), hemorrhagic cysts present in some ovaries (see 4). (jax.org)
Typically, the human ovaries produce a single dominant follicle that results in a single ovulation each menstrual cycle (Fig. 1). (glowm.com)
Ovaries contain lots of these immature follicles that are just waiting to be activated - in fact, far more follicles than are actually needed. (theconversation.com)
Rhinos don't undergo the menopause and so the ovaries of older animals still contain small follicles. (theconversation.com)
Reasons for the delayed development of in vivo and in vitro production of equine embryos include the scarce availability of abattoir ovaries and the lack of interest from horse breeders and registries. (ivis.org)
A health care provider closely monitors the development of the eggs using transvaginal ultrasound and blood tests to assess follicle growth and estrogen production by the ovaries. (wikipedia.org)
An ART cycle starts when a woman begins taking fertility drugs or having her ovaries monitored for follicle production. (cdc.gov)
Doctors do blood tests to measure levels of hormones involved in the release of eggs and/or ultrasonography of the ovaries to view and count the number of follicles (small fluid-filled pockets that contain the eggs). (msdmanuals.com)

Since technologies advances are required to transfer iv Follicologenesis (ivF) from bench to bedside, monovulatory large mammal becomes ideal translational models to validate cultural conditions enhabling synergic follicles-oocyte iv development. (unipg.it)
In this video, we describe a protocol for the vitrification of sheep oocyte, collected from both juvenile and adult donors, and in vitro matured to prior to cryopreservation. (jove.com)
These protease-induced decreases in IGFBP-4 and -5 likely cause increased levels of bioavailable (or free) IGFs that stimulate steroidogenesis and mitogenesis in developing dominant follicles, which ultimately prepare the follicle(s) and oocyte(s) for successful ovulation and fertilization. (bioone.org)
ICSI produced the first pregnancy derived from an in vitro matured oocyte [ 5 ], and it was successfully carried to term. (ivis.org)
In addition, viable and fertile mouse offspring have been obtained from in vitro produced spermatozoa by oocyte microinjection ( 3 , 4 ). (elifesciences.org)
EVs in the follicular fluid, which fills the ovarian follicle and influences oocyte developmental competency, carry microRNAs (EV-miRNAs) that have been associated with In Vitro Fertilization (IVF) outcomes. (cdc.gov)
The largest oocyte diameter was recorded in the secondary follicles (P (bvsalud.org)

This happens via in-vitro fertilization (IVF). (wikipedia.org)
In vitro fertilization allows us to control risks for multiple pregnancy by replacing a "reasonable" number of embryos into the uterus. (advancedfertility.com)
Consider what it's like to undergo a typical cycle of in vitro fertilization. (kevinmd.com)
Instead, many efforts concentrated on conventional in vitro fertilization (IVF). (ivis.org)
In vitro fertilization (IVF) involves fertilization outside the body in an artificial environment. (ucsfhealth.org)
This subject involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), cryopreservation of gametes or embryos, and/or the use of fertility medication . (wikipedia.org)
In vitro fertilization is the technique of letting fertilization of the male and female gametes (sperm and egg) occur outside the female body. (wikipedia.org)
OHSS affects 3% to 6% of women who go through in vitro fertilization (IVF). (medlineplus.gov)
Fertilization rate was assessed by in vitro fertilization (IVF), and testicular structure was analyzed using the TUNEL assay and hematoxylin and eosin (H&E) staining. (bvsalud.org)
A small number of follicles (observed and counted during ultrasonography) means that pregnancy after in vitro fertilization is less likely but still possible. (msdmanuals.com)
Background and Objective Administration of growth hormone (GH) during ovarian stimulation has been shown to improve success rates of in vitro fertilization. (medscape.com)
Administration of growth hormone (GH) during ovarian stimulation has been shown to improve success rates of in vitro fertilization (IVF) treatment, [ 1 , 2 ] and especially in women with poor ovarian response. (medscape.com)
ABSTRACT To investigate the effects of silymarin on follicular development, we enrolled 40 healthy women undergoing in vitro fertilization (IVF) due to male factor infertility in this trial. (who.int)

Within the ovary, there are ovarian follicles which contain immature eggs. (wikipedia.org)
When levels of FSH fall, it is too low to stimulate the other follicles which then go through atresia The hypothalamic-pituitary-ovary axis controls female reproduction. (wikipedia.org)
The technique focuses on the follicle, a tiny sac within the ovary that contains the immature egg. (nih.gov)
Only a few follicles in the human ovary survive to complete the cytodifferentiation process, with 99.9% dying by a programmed cell death mechanism called apoptosis. (glowm.com)

The development of preantral and antral follicles is gonadotropin independent and gonadotropin dependent, respectively. (glowm.com)
Increased IGFBP-4 and -5 protease along with lower amounts of IGFBP-4 binding activity and greater amounts of free IGF-I are some of the earliest developmental changes documented in bovine growing antral follicles. (bioone.org)

Ovulation is a process where ovarian follicles rupture, releasing eggs that can be fertilized. (wikipedia.org)
Only the dominant follicle(s) goes through ovulation, so there is usually only a single ovulation during each human menstrual cycle. (wikipedia.org)
The final call of when the follicles are mature enough for ovulation trigger and egg retrieval is completely out of your control. (kevinmd.com)
Photomicrograph of ovulation shows the expanded egg-cumulus complex leaving the follicle through the stigma. (glowm.com)
From Blandau RJ: Growth of the ovarian follicle and ovulation. (glowm.com)
As follicles grow and some are selected for ovulation, many are lost. (theconversation.com)
When follicles have reached an adequate size and the eggs are mature enough, an injection of the hormone hCG initiates the ovulation process. (wikipedia.org)
Follicle-stimulating hormone stimulates the release of eggs, called ovulation. (msdmanuals.com)

New techniques, such as in vitro fertilisation (commonly known as IVF), enable us to bypass normal reproduction to produce new northern white rhino babies. (theconversation.com)
women who are undergoing assisted reproductive techniques (fertility treatment) such as in vitro fertilisation. (europa.eu)
Conscious sedation is the most common method of pain relief used during ultrasound-directed transvaginal follicle aspiration (UDFA) for in-vitro fertilisation/embryo transfer (IVF /ET). (bvsalud.org)

In female mammals, each ovulatory cycle, or menstrual cycle in humans, a set number of ovarian follicles ovulate, each follicle releasing an egg that can be fertilised. (wikipedia.org)
In polycystic ovarian syndrome (PCOS), the follicle dominance process is disrupted, and a large number follicles continue to develop each menstrual cycle Sometimes follicular dominance is manipulated to allow more follicles to ovulate. (wikipedia.org)
Aging is associated with a decline in the number of ovarian follicles, menstrual irregularities, ovarian hormonal deficiency, anovulation, decreased fertility, and, finally, a complete and irreversible cessation of menses known as menopause, usually occurring at a mean age of 51 years. (medscape.com)
1 , 2 , 3 In each menstrual cycle, the dominant follicle that ovulates its egg originates from a primordial follicle that was recruited to initiate growth almost 1 year earlier (Fig. 2). (glowm.com)
Doctors may measure levels of follicle-stimulating hormone and estrogen in the blood at a certain time during the menstrual cycle. (msdmanuals.com)
Increased levels of follicle-stimulating hormone and decreased levels of estrogen early in the menstrual cycle suggest a problem with eggs. (msdmanuals.com)

Summary answer: The standardization of long-term gonadotropin stimulation is a key step to implement ivF in order to promote both reproductive targets, oogenesis and follicle steroidogenesis activation. (unipg.it)

Folliculogenesis is the process in which a recruited primordial follicle grows and develops into a specialized graafian follicle with the potential to either ovulate its egg into the oviduct at mid-cycle to be fertilized or to die by atresia. (glowm.com)
In women, the process is long, requiring almost 1 year for a primordial follicle to grow and develop to the ovulatory stage. (glowm.com)
The normal follicles were measured and classified in primordial, transitional, primary and secondary stages. (bvsalud.org)
The primary and secondary follicles were larger in diameter when compared with the primordial and transitional follicles. (bvsalud.org)

A follicle situated in the ovarian tissue of a southern white rhinoceros. (theconversation.com)

In adult mice, CPA also induced follicle loss in vivo. (hal.science)
Hair follicle germs (HFGs), identified during in vivo development, are considered effective tissue grafts for hair regenerative. (researchgate.net)
However, other procedures based on the in vivo and in vitro production of equine embryos have emerged in recent years. (ivis.org)
Histological, RT-qPCR, western blot analyses and steroid hormone measurements were performed on in vitro cultured mouse prepubertal testicular tissues and age-matched in vivo controls. (elifesciences.org)
Several fertility restoration approaches, whose aim is to mature cryopreserved tissues in vivo or in vitro in order to produce spermatozoa, are being developed. (elifesciences.org)
These isohormones exhibit differences in carbohydrate composition, receptor binding activity, plasma half life and in-vitro and in-vivo bioactivity. (ucl.ac.uk)
Os estudos in vitro estão livres da complexidade e fatores de confusão próprios dos modelos in vivo e ensaios clínicos. (bvsalud.org)

One is a method for in vitro differentiation of thyrocytes and 3D culture of follicles starting from mouse embryonic stem cells. (unil.ch)

Dominant follicle selection is driven by multiplication of cells (proliferation) and cell death (apoptosis) events. (wikipedia.org)

Study design, size, duration: The present research aimed to study the influence of 2 different gonadotropins (oFSH vs Pregnant Mare's Serum Gonadotropin/PMSG) on ivF cultures of single ovine preantral follicle (PA). (unipg.it)
Atresia can occur in preantral class 1, 2, and 3 follicles. (glowm.com)
In this study, the ovarian preantral follicles in healthy adult alpacas were characterized in order to establish a general model to in vitro studies. (bvsalud.org)

They then flushed the follicle with the same hormones and growth factors that the follicle would be exposed to inside a woman's body. (nih.gov)
Genome-wide assessment of DNA methylation alterations induced by superovulation, sexual immaturity and in vitro follicle growth in mouse blastocysts. (babraham.ac.uk)
During the course of folliculogenesis, growth is achieved by cell proliferation and formation of follicular fluid, whereas development involves cytodifferentiation of all the cells and tissues in the follicle. (glowm.com)
The mechanisms regulating follicle growth and development are under the control of changing concentrations of ligands ( i.e. hormones and growth factors). (glowm.com)
Although GnRH, FSH, and LH are critically important in regulating folliculogenesis, hormones and growth factors, which are themselves products of the follicle, can act locally to modulate (amplify or attenuate) FSH and LH action. (glowm.com)
Both bFGF and IGF-1 potentiate the growth of hair follicles. (antiaging-systems.com)
In an animal study, mice administered DHT exhibited reduced expression of IGF-1, which resulted in a lower number of proliferating cells in hair follicles and decreased hair growth. (antiaging-systems.com)
A third growth factor, VEGF, is essential for establishing a highly developed blood vessel network around the hair follicle dermal papillae during the anagen growth phase. (antiaging-systems.com)
Because of its cause we have not made use of this medium characteristic high abundance in the female before in our department, we aimed to com- reproductive tract, albumin has traditionally pare the IVF implantation and pregnancy served as the main macromolecule in most rate by using hyaluronic acid and albumin culture media used for in vitro growth of as transfer medium. (who.int)

In vitro models of human hair follicle-like tissue could be fundamental tools to better understand hair follicle morphogenesis and hair drug screening. (researchgate.net)
A complete in vitro spermatogenesis has been obtained from mouse prepubertal testicular tissue, although with low efficiency. (elifesciences.org)
In vitro spermatogenesis could indeed be proposed to patients with testicular localization of residual tumor cells, for whom testicular tissue autografting is not indicated (about 30% of patients with acute leukemia). (elifesciences.org)

The ability of pituitaries from lactating animals to secrete LH and FSH in response to gonadotropin-releasing hormone (GnRH) was studied in vitro using a pituitary incubation system. (elsevierpure.com)
In summary, the inability of pituitaries from lactating rats to respond adequately to large doses of GnRH in vitro suggests that the suckling stimulus indirectly suppresses pituitary responsiveness to GnRH. (elsevierpure.com)

The ability of lactation to suppress the postcastration rise in serum LH also was demonstrated in vitro as pituitaries from ovariectomized or intact females nursing eight pups released similar amounts of LH on days 5 and 10 postpartum. (elsevierpure.com)
However, by day 15 postpartum, even though serum LH concentrations were still very low, pituitaries from ovariectomized lactating females released LH in vitro at a rate similar to pituitaries from nonlactating rats. (elsevierpure.com)
Occult primary ovarian insufficiency presents as unexplained infertility in a patient with a normal basal serum follicle-stimulating hormone (FSH) level. (medscape.com)
The monoclonal antibodies I have developed and characterised immunologically have been used, in association with the in-vitro bioassay, to neutralise or extract FSH bioactivity from serum samples and standards. (ucl.ac.uk)

The more mature follicles that are more sensitive to FSH, can use it to produce inhibin and estrogen through increasing aromatase activity. (wikipedia.org)
When levels of circulating FSH drop in response to estrogen levels rising, only the most sensitive follicles to FSH will be able to survive on these low levels. (wikipedia.org)
Pregnancy was unrelated to estrogen (E2) level, E2 levels per follicle, or patient age. (advancedfertility.com)
In some species (e.g., bovine), evidence indicates that decreases in IGFBP-4 and -5 levels in estrogen-dominant preovulatory follicles are likely due, in part, to increased protease activity, whereas lower levels of IGFBP-2 are not due to increased proteolysis. (bioone.org)

The researchers were able to grow human follicles in the laboratory for 30 days, until the eggs they contained were nearly mature. (nih.gov)
The new findings build on earlier efforts by the research team, who grew mouse follicles in culture, induced the eggs they contained to mature, fertilized them with mouse sperm, and implanted them into female mice to establish pregnancy. (nih.gov)
Transvaginal ovum retrieval (OVR) is the process whereby a small needle is inserted through the back of the vagina and guided via ultrasound into the ovarian follicles to collect the fluid that contains the eggs. (wikipedia.org)
A procedure to collect the eggs contained in the ovarian follicles. (cdc.gov)

These selected follicles are known as the dominant follicles. (wikipedia.org)
In humans, there is usually only one dominant follicle per cycle. (wikipedia.org)
Follicle dominance results due to competition between follicles, as only some will be selected for further development, which are known as the dominant follicle(s). (wikipedia.org)
Follicles that have these properties become dominant which occurs just as circulating FSH levels are falling. (wikipedia.org)
In humans, when follicles mature, usually only one becomes dominant. (wikipedia.org)
The fall in FSH occurs through an endocrine loop that the dominant follicle causes. (wikipedia.org)
In any given cycle, the dominant follicle must complete all the steps in folliculogenesis in a timely manner. (glowm.com)
Recognition that only a few follicles become dominant beautifully demonstrates the fundamental principle that folliculogenesis in mammals is a highly selective process. (glowm.com)
It is believed that this local regulatory system plays an important role in the complex mechanisms governing the timing of folliculogenesis and whether a follicle becomes dominant or atretic. (glowm.com)
The dominant follicle of the cycle appears to be selected from a cohort of class five follicles, and it requires about 20 days to develop to the ovulatory stage. (glowm.com)

Ovarian follicle dominance is the process where one or more follicles are selected per cycle to ovulate. (wikipedia.org)
The follicle grows over months until it's ready to ovulate. (theconversation.com)

The stated objective of the study: To determine the relationship of follicle numbers and estradiol (E2) levels to multiple implantations in human menopausal gonadotropin HMG (injectable gonadotropins) and clomiphene citrate (Clomid, Serophene) cycles. (advancedfertility.com)
Finally, the researchers will have to demonstrate that they can freeze and thaw human follicles before growing them in culture. (nih.gov)
The researchers made the new advance by suspending the human follicle in a three-dimensional matrix of a gel-like material. (nih.gov)
Expression of the six type II members in the hair follicle and the combined catalog of human type I and II keratins. (medlineplus.gov)
An in vitro model of human ovarian follicles would greatly benefit the study of female reproduction. (biorxiv.org)
Their availability has allowed the development of a sensitive, non-competitive, sandwich type radioimmunoassay for human follicle stimulating hormone (hFSH). (ucl.ac.uk)
In human postnatal dental tissues, five main sources of DSCs have been identified: dental pulp stem cells (DPSCs), 11 stem cells from human exfoliated deciduous teeth (SHEDs), 12 periodontal ligament stem cells (PDLSCs), 13 dental follicle stem cells (DFSCs) 14 and stem cells from apical papilla (SCAPs). (bvsalud.org)
From the early beginnings of in vitro fertili- motility and improves retention of sperm zation (IVF) it has been recognized that the motility in long-term incubation of both culture media supplemented with proteins fresh and cryopreserved, thawed human have a direct role in osmoregulation. (who.int)

Specialized hypothalamic neurons secrete pulses of gonadotropin-releasing hormone (GnRH) into the portal blood vessels, which acts on the gonadotrophs to cause a pulsatile release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which act on ovarian follicle cells to control folliculogenesis. (glowm.com)

Follicles and estradiol hormone levels were measured in the usual fashion of infertility clinics. (advancedfertility.com)

For the current study, the researchers started with so-called secondary follicles, which are at an intermediate stage of development. (nih.gov)
primary (6.10%) and secondary (0.37%) follicles were rarely found. (bvsalud.org)

A class 4 (1 to 2 mm) follicle, if selected, requires about 50 days to grow and develop to the preovulatory stage. (glowm.com)

During prenatal development and postnatal cyclic hair regeneration, hair follicle morphogenesis is triggered by reciprocal interactions and the organization of the epithelial and mesenchymal cell po. (researchgate.net)

Hair regeneration using hair follicle stem cells (HFSCs) and dermal papilla cells is a promising approach for the treatment of alopecia. (researchgate.net)
Dermal papilla cells (DPCs) play critical roles in hair follicle development, but the underlying mechanisms that contribute to hair regeneration have yet to be fully elucidated, particularly in terms of alterations in androgenetic alopecia patients. (researchgate.net)
Before we discuss how Hair Pro can block the cascade of processes leading to alopecia, let's examine the micro-anatomy of the hair follicle and its key component, the dermal papilla. (antiaging-systems.com)
At the base of each follicle is a bulb-like projection, the dermal papilla , surrounded by the hair matrix, a group of cells which divide to form the major structures of the hair fiber and root. (antiaging-systems.com)
Of all androgens, the one that most negatively influences dermal papilla cells to produce follicle-shrinking cytokines is 5-α-dihydrotestosterone (DHT), which is synthesized from testosterone by the enzyme 5-α-reductase. (antiaging-systems.com)

Results: there are five main sources of stem cells of dental origin: stem cells from dental pulp of permanent teeth and deciduous teeth, apical papilla, periodontal ligament and dental follicle. (bvsalud.org)

Only the largest, most developed follicles are able to withstand the drop in hormones, therefore only the selected follicles survive, the rest go through atresia (follicle death). (wikipedia.org)
In this capacity, it survives the negative events that operate to destroy the other follicles by atresia. (glowm.com)

In vitro clinic: Very low testis weight, no epididymal sperm recovered. (jax.org)
In vitro clinic: Low epididymal sperm concentration, many sperm have abnormally shaped heads, sperm tails are short, no sperm motility, no IVF success. (jax.org)
However, in vitro sperm production still remains a rare event. (elifesciences.org)

The more developed follicles will have more blood vessels in theca of follicle, which means they will have more hormones such as FSH available to cross over the basement membrane into the follicle. (wikipedia.org)
The remaining cells in the follicle wall ( i.e. granulosa, membrana and periantral, theca, the theca interna and externa) develop into the corpus luteum. (glowm.com)

Development of molecular markers for stage I and stage II zebrafish ovarian follicles after in vitro culture. (bournemouth.ac.uk)
We're experimenting with techniques that maximise the number of follicles we can grow in a culture dish. (theconversation.com)
It has been previously shown that supplementing organotypic culture media with retinol improves the in vitro production of spermatids and spermatozoa in prepubertal mouse testicular tissues cultured at a gas-liquid interphase ( 5 , 7 ). (elifesciences.org)

Data was recorded in a computer database and analyzed with respect to number of follicles of various sizes (on the day of HCG), peak estradiol levels and outcomes of pregnancy, as well as single, twin, and triplet or higher order pregnancy. (advancedfertility.com)

Hofmann I, Winter H, Mucke N, Langowski J, Schweizer J. The in vitro assembly of hair follicle keratins: comparison of cortex and companion layer keratins. (medlineplus.gov)

Also, the total amount of FSH released in vitro in response to GnRH by pituitaries from lactating and cycling females did not differ significantly, even though LH release differed greatly among these groups of animals. (elsevierpure.com)

The ovulated follicles come from a larger pool of growing follicles Follicle dominance results from competition between follicles from this growing pool, as only some will be selected for further development. (wikipedia.org)
During development some follicles are further ahead in development. (wikipedia.org)
Both strategies might support follicle development in large animal models and humans with the hope of translating this technology for fertility preservation purposes. (unipg.it)

however, the relationship between hair follicles an. (researchgate.net)
Hair follicles are made mostly of a protein called keratin . (healthline.com)
As the name implies, androgenetic alopecia is androgen-dependent and heriditary, resulting in the atrophy or miniaturization of predisposed hair follicles and progressive decline in hair density. (antiaging-systems.com)
The dermis, the second layer of the skin just under the outer layer, the epidermis, contains tens of thousands of tiny and complex structures, the hair follicles, which enclose the hair root. (antiaging-systems.com)
however, in response to particular androgens, and in certain areas, such as the sides and top of the head, some cytokines induce follicle atrophy, leading to hair thinning and eventual loss. (antiaging-systems.com)

Generally, there was a good quantitative relationship between the amount of LH released in vitro and plasma LH concentrations for all the intact groups studied. (elsevierpure.com)

During the 30-day experiment, the follicle grew and produced hormones and the immature egg matured just as it would inside a woman's body. (nih.gov)

Cryopreserved prepubertal testicular biopsies could theoretically be later matured in vitro to produce spermatozoa for assisted reproductive technology. (elifesciences.org)

To transfer to the Sykiotis lab the 3D follicle model established by the Costagliola lab in order to perform cell-based studies on the role of stress response pathways on iodine metabolism. (unil.ch)

Anatomy14

Organisms2

Diseases6

Chemicals and Drugs23

Analytical, Diagnostic and Therapeutic Techniques and Equipment8

Phenomena and Processes10

Disciplines and Occupations1

Maturation13

Oocytes15

Ovaries12

Oocyte7

Fertilization13

Ovary4

Antral follicles2

Ovulation8

Fertilisation3

Menstrual6

Steroidogenesis1

Primordial4

Situated in the ovarian1

Vivo7

Differentiation1

Apoptosis1

Preantral3

Growth9

Tissue3

Pituitary2

Serum4

Estrogen4

Eggs4

Dominant10

Ovulate2

Human8

Gonadotropin-releasi1

Infertility1

Secondary2

Preovulatory1

Postnatal1

Dermal papilla5

Papilla1

Atresia2

Sperm3

Theca2

Culture3

Estradiol1

Cortex1

GnRH1

Development3

Hair5

Concentrations1

Immature egg1

Testicular1

Model1