Results 31 to 40 of about 5,100 (172)
Characterization of isolated late preantral and early antral equine ovarian follicles
Reproduction and FertilityUnderstanding how to effectively isolate a large number of healthy follicles is essential for increasing success rates in ARTs, such as in vitro culture and cryopreservation.
Ana Normélia P Morais +15 more
doaj +1 more source
Light microscopical and ultrastructural characterization of goat preantral follicles [PDF]
Small Ruminant Research, 2001 Goat ovarian preantral follicles were morphologically and ultrastructurally described in this work. Primordial follicles are oocytes surrounded by one layer of squamous or squamous-cuboidal granulosa cells; primary follicles have a single layer of cuboidal granulosa cells, and secondary follicles are oocytes surrounded by two or more layers of cuboidal
Lucci, Carolina Madeira +4 more
openaire +2 more sources
Endocrinology, Diabetes &Metabolism, Volume 9, Issue 5, September 2026.In this population‐based study of 883 women, AMH declined less with age in women with PCOS than in healthy women. Higher AMH may protect older healthy women from T2DM but indicates elevated metabolic risk in younger women with PCOS, supporting its role as a life‐course biomarker for metabolic risk stratification.
Fahimeh Ramezani Tehrani +5 more
wiley +1 more source
Ciência Rural, 1998 Com o objetivo de isolar mecanicamente folículos pré-antrais caprinos, 52 ovários de cabras sem raça definida (SRD) foram coletados em matadouros ou extraídos por ovariectomia.
Ana Paula Ribeiro Rodrigues +5 more
doaj +1 more source
Reproduction in Domestic Animals, Volume 61, Issue 8, August 2026.ABSTRACT The aim of this study was to evaluate the effect of anethole addition to the ovine oocyte in vitro maturation (IVM) medium on viability and chromatin configuration, intracellular production of reactive oxygen species (ROS), enzymatic activity of superoxide dismutase (SOD) and catalase (CAT), as well as the levels of reduced thiols in IVM ...
Anderson Nascimento de Andrade +10 more
wiley +1 more source
The Regulation of Apoptosis in Preantral Ovarian Follicles
Neurosignals, 2000 Less than 1% of ovarian follicles ever mature to ovulation. The remainder undergo atretic degeneration via apoptosis during development. Though the regulation of antral and preovulatory survival has been studied for many years, very little is known about the regulation of survival and development of preantral follicles.
openaire +2 more sources
International Journal of Reproductive BioMedicine, 2023 Background: Ovarian tissue extract (OTE) and sodium selenite (SS) enhance the growth and maturation of preantral follicles in a dose-dependent manner. Objective: The present study was designed to bring more information regarding the mechanism of OTE and ...
Hamed Shoorei +3 more
doaj +1 more source
Advanced Science, Volume 13, Issue 37, 3 July 2026.This study identifies a FOSL2‐driven positive feedback loop that amplifies FSH/FSHR signaling. During FSH‐dependent follicle maturation, FSH induces Fosl2 expression via the cAMP‐PKA‐CREB cascade. FOSL2 in turn binds the promoters of Fshr and estrogen‐biosynthesis genes to enhance their transcription, thereby increasing Fshr mRNA level and amplifying ...
Hongru Shi +13 more
wiley +1 more source
Ciência Animal Brasileira, 2015 The aim of this study was to investigate the interaction of human FSH (10ng/ml) with T4 (20ng/mL) on survival, activation and growth of preantral follicles cultured in vitro for 28 days.
Sanely Lourenço da Costa +5 more
doaj +1 more source
Journal of Medical Primatology, Volume 55, Issue 3, June 2026.ABSTRACT Background Anti‐Müllerian hormone is widely used as a marker of ovarian reserve, but its stage‐specific follicular origin remains unclear in the common marmoset (Callithrix jacchus). Methods Follicle diameters were reassessed histologically, and plasma anti‐Müllerian hormone concentrations were measured using an ultrasensitive enzyme‐linked ...
Dong‐Won Seol +10 more
wiley +1 more source