Results 31 to 40 of about 536,225 (354)

Do BRCA1 and BRCA2 gene mutation carriers have a reduced ovarian reserve? Protocol for a prospective observational study

open access: yesBMJ Open, 2019
Introduction BRCA1/2 gene mutations increase risk of breast and/or ovarian cancer and may have implications for reproductive health. Indirect biomarkers of the ovarian primordial follicle pool (anti-Müllerian hormone (AMH)) and one small study in female ...
Amy Louise Winship   +4 more
doaj   +1 more source

Metabolic cooperation in the ovarian follicle.

open access: yesPhysiological Research, 2019
Granulosa cells (GCs) are somatic cells essential for establishing and maintaining bi-directional communication with the oocytes. This connection has a profound importance for the delivery of energy substrates, structural components and ions to the ...
J. Fontana   +4 more
semanticscholar   +1 more source

Advances in human primordial follicle activation and premature ovarian insufficiency.

open access: yesReproduction, 2020
In women, the non-growing population of follicles that comprise the ovarian reserve is determined at birth and serves as the reservoir for future fertility.
E. Ford   +4 more
semanticscholar   +1 more source

Granulosa Cell Apoptosis in the Ovarian Follicle—A Changing View

open access: yesFrontiers in Endocrinology, 2018
Recent studies challenge the previous view that apoptosis within the granulosa cells of the maturing ovarian follicle is a reflection of aging and consequently a marker for poor quality of the contained oocyte.
Sheena L. P. Regan   +5 more
semanticscholar   +1 more source

Ovarian Follicle Development Requires Smad3 [PDF]

open access: yesMolecular Endocrinology, 2004
AbstractSmad3 is an important mediator of the TGFβ signaling pathway. Interestingly, Smad3-deficient (Smad3−/−) mice have reduced fertility compared with wild-type (WT) mice. To better understand the molecular mechanisms underlying the reduced fertility in Smad3−/− animals, this work tested the hypothesis that Smad3 deficiency interferes with three ...
Dragana, Tomic   +5 more
openaire   +2 more sources

Female reproductive aging is master-planned at the level of ovary.

open access: yesPLoS ONE, 2014
The ovary receives a finite pool of follicles during fetal life. Atresia remains the major form of follicular expenditure at all stages since development of ovary.
Sayani Banerjee   +4 more
doaj   +1 more source

Is there a relationship between ovarian reserve and blood groups in infertile patients?

open access: yesGynecology Obstetrics & Reproductive Medicine, 2019
Objective: Evaluation of ovarian reserve in infertile patients had become an important concept in assisted reproductive techniques (ART) success work-up. Recent studies reported an association between blood type and ovarian reserve. Therefore, the aim of
Ozgur Kan   +6 more
doaj   +1 more source

Prediction of the Spontaneous Estrus Expression Period Based on Large (≥10 mm) Follicle Numbers in Lactating Holstein Dairy Cows

open access: yesVeterinary Sciences, 2023
The objectives of this study were (1) to investigate the distribution of large (≥10 mm) follicle numbers during the estrous cycle and (2) to compare the timing of the estrus expression period after the ovarian examination between cows with one large ...
Ryotaro Miura   +9 more
doaj   +1 more source

TMCO1 is essential for ovarian follicle development by regulating ER Ca2+ store of granulosa cells

open access: yesCell Death and Differentiation, 2018
TMCO1 (transmembrane and coiled-coil domains 1) is an endoplasmic reticulum (ER) transmembrane protein that actively prevents Ca2+ stores from overfilling. To characterize its physiological function(s), we generated Tmco1−/− knockout (KO) mice.
Zhongshuai Sun   +12 more
semanticscholar   +1 more source

In vitro differentiation of human embryonic stem cells into ovarian follicle-like cells

open access: yesNature Communications, 2017
Understanding the unique mechanisms of human oogenesis necessitates the development of an in vitro system of stem cell differentiation into oocytes. Specialized cell types and organoids have been derived from human pluripotent stem cells in vitro, but ...
Dajung Jung   +12 more
semanticscholar   +1 more source

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