Results 21 to 30 of about 8,556 (220)
Neonatal exposure to xenoestrogens impairs the ovarian response to gonadotropin treatment in lambs [PDF]
, 2015 Bisphenol A (BPA) and diethylstilbestrol (DES) are xenoestrogens which have been associated with altered effects on reproduction. We hypothesized that neonatal xenoestrogen exposure affects the ovarian functionality in lambs.
Belmonte, Norberto Miguel +8 more
core +2 more sources
Stepped vitrification technique for human ovarian tissue cryopreservation [PDF]
, 2019 The advantage of stepped vitrification (SV) is avoiding ice crystal nucleation, while decreasing the toxic effects of high cryoprotectant concentrations. We aimed to test this method for human ovarian tissue cryopreservation.
Amorin, C.A. +9 more
core +1 more source
In vitro development of pig preantral follicles [PDF]
Bioscientifica Proceedings, 2020 A limiting factor to realizing the full potential of many of the new reproductive techniques is the lack of abundant numbers of fertilizable oocytes. This problem could be addressed by using the large source of oocytes available from preantral and primordial follicles by developing systems for in vitro growth.
openaire +2 more sources
Sphingosine 1-phosphate promotes activation of aprine preantral follicle in vitro [PDF]
, 2014 Este estudo descreve o efeito da esfingosina 1-fosfato (S1P) no desenvolvimento de folículos pré-antrais, portanto da ativação e viabilidade de folículos caprinos cultivados in vitro.
Báo, Sônia Nair +10 more
core +9 more sources
Journal of Animal Reproduction and Biotechnology, 2019 The objective of this study was to establish an in vitro culture system for ovarian preantral follicles of B6D2F1. First, we optimized the in vitro preantral-follicle culture by culture duration, follicle stimulating hormone (FSH) type, and activin A ...
Jung Kyu Choi
doaj +1 more source
Hayati Journal of Biosciences, 2021 The structure of follicular tissue affects the ability to maintain the structural integrity of follicles against cryoinjury post-vitrification. Histological analysis was conducted on the structural integrity of each stage of preantral follicles post ...
Nova Anita +4 more
doaj +1 more source
Onset and Heterogeneity of Responsiveness to FSH in Mouse Preantral Follicles in Culture [PDF]
, 2016 The obligatory role of follicle-stimulating hormone (FSH) in normal development and function of ovarian antral follicles is well recognized, but its function in preantral growth is less clear. The specific objective of this study was to investigate the
Fenwick, M. +5 more
core +1 more source
Cryopreservation and characterization of canine preantral follicles
Cryobiology, 2018 The aim of this study was to define the population, morphological and ultrastructural characteristics of bitch preantral follicles (PAFs) and to compare the effects on the morphology of PAF of two cryopreservation techniques - slow freezing (SF) and vitrification (V) - of bitches' ovarian tissue. The average population (number per ovary) of PAFs was 48,
J.L.P.R. Jivago +5 more
openaire +2 more sources
Oocyte-granulosa-theca cell interactions during preantral follicular development
Journal of Ovarian Research, 2009 The preantral-early antral follicle transition is the penultimate stage of follicular development in terms of gonadotropin dependence and follicle destiny (growth versus atresia).
Orisaka Makoto +3 more
doaj +1 more source
In Vitro Growth of Preantral Follicle and Maturation of Intrafollicular Oocyte from Aged Mice
Journal of Animal Reproduction and Biotechnology, 2019 This study aimed to recover the ovarian function through in vitro culture of preantral follicles from aged mice. First, we isolated the preantral follicles from ovaries of sixty-seven-week old B6D2F1 mice with decreased fecundity to know how many ...
Jung-Ah Yoon, Jung-Kyu Choi
doaj +1 more source