Results 51 to 60 of about 9,462 (214)
Cryopreservation of swine ovarian tissue : effect of different cryoprotectants on the structural preservation of preantral follicle oocytes [PDF]
, 2009 The present study aimed to test different cryoprotectants on cryopreservation of pig ovarian tissue. Pig ovaries (n = 3) were collected at a local slaughterhouse. From each ovary, ten cortex samples were taken.
Amorima, C. A. +6 more
core +1 more source
Advanced Science, EarlyView.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 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
Ultrastructural and morphometric characterization of buffalo (Bubalus bubalis) ovarian preantral follicles [PDF]
, 2007 The main objective of the present study was to characterize buffalo preantral ovarian follicles. Parts of ovarian cortex, collected from postpubertal buffalo females that were having estrous cycles at regular intervals, were selected under ...
Báo, Sônia Nair +3 more
core +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
The Anatomical Record, EarlyView.Abstract The equine ovary exhibits unique structural and developmental features that distinguish it from those of other domestic species, including the presence of an ovulation fossa and an inversion of cortical and medullary layers. This study aimed to investigate the morphostructural development of the equine fetal ovary, with particular emphasis on ...
Laura Ver Goltz +5 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
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
Luteinizing hormone receptor knockout mouse: What has it taught us?
Andrology, Volume 14, Issue 4, Page 1017-1028, May 2026.Abstract Luteinizing hormone (LH), along with its agonist choriongonadotropin (hCG) in humans, is the key hormone responsible for the tropic regulation of the gonadal function. LH and hCG act through their cognate receptor, the luteinizing hormone/choriongonadotropin receptor (LHCGR; more appropriately LHR in rodents lacking CG), located in the testis ...
Ilpo T. Huhtaniemi
wiley +1 more source
Degeneration rate of preantral follicles in the ovaries of goats [PDF]
, 2002 The degeneration rate of ovarian preantral follicles in goats, and the distribution in the follicular classes (primordial, primary or secondary) was assessed. Ovaries from adult goats were collected at a local slaughterhouse.
Báo, Sônia Nair +8 more
core +1 more source