Results 131 to 140 of about 5,100 (172)
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In vitro development of sheep preantral follicles.
Biology of reproduction, 1999Preantral ovarian follicles isolated from prepubertal sheep ovaries were individually cultured for 6 days in the presence of increasing doses of FSH (ranging from 0.01 to 1 microg/ml) and under two different oxygen concentrations, 20% and 5% O2. Follicle development was evaluated on the basis of antral cavity formation as well as the presence of ...
CECCONI, Sandra +3 more
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Cryopreservation and in vitro culture of caprine preantral follicles
Reproduction, Fertility and Development, 2010Preantral follicles (PFs) form a far larger oocyte reservoir (∼90% of the follicular population) than antral follicles. Several laboratories have focussed efforts on cryopreservation and in vitro culture (IVC) of PFs to obtain large numbers of fertilisable oocytes.
J R, Figueiredo +3 more
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In vitro development of caprine ovarian preantral follicles
Theriogenology, 2000The in vitro growth and developmental pattern of caprine preantral follicles cultured in agar gel was observed. Preantral follicles 50 to 150 microm in diameter were isolated from prepuberal goat ovaries by treatment with collagenase and DNase. The isolated preantral follicles were cultured in agar gel for up to 14 days.
Z, Huanmin, Z, Yong
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Role of VEGF in pig preantral follicles
Veterinary Research Communications, 2008Role of VEGF in pig preantral follicles A. Martelli & V. Russo & A. Mauro & D. Nardinocchi & C. Rinaldi & N. Bernabo & P. Berardinelli & M.
MARTELLI, Alessandra +7 more
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Animal Reproduction Science, 2003
Although enormous progress has been made in understanding the events and regulation of the later stages of ovarian follicular development, the early stages of development, to a large extent and particularly in large mammals, remain a mystery. Mechanisms that regulate the initiation of follicular growth (follicle activation) and the ensuing growth and ...
J E Fortune, J E Fortune
exaly +3 more sources
Although enormous progress has been made in understanding the events and regulation of the later stages of ovarian follicular development, the early stages of development, to a large extent and particularly in large mammals, remain a mystery. Mechanisms that regulate the initiation of follicular growth (follicle activation) and the ensuing growth and ...
J E Fortune, J E Fortune
exaly +3 more sources
Hormones and Preantral Follicle Growth in Women
Mayo Clinic Proceedings, 1976Studies of follicular morphology in biopsies of human ovarian tissue obtained from women with a syndrome of hypogonadotropic hypogonadism have been reviewed. Follicular maturation was consistent with that seen in ovarian tissues removed at postmortem examination of infants.
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Cellular Reprogramming, 2018
One of the most important concerns cancer survivors face is fertility. Current treatment modalities often result in damage to the reproductive system. Different options have been proposed to preserve the fertility of affected women, and many attempts have been made to improve their chance of childbearing after therapy.
Zahra, Rajabi +2 more
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One of the most important concerns cancer survivors face is fertility. Current treatment modalities often result in damage to the reproductive system. Different options have been proposed to preserve the fertility of affected women, and many attempts have been made to improve their chance of childbearing after therapy.
Zahra, Rajabi +2 more
openaire +2 more sources
In vitro folliculogenesis of rat preantral follicles.
Endocrinology, 1995The impact of various gonadotropic hormones on the growth and development of secondary follicles from primordial and primary follicles obtained by enzymatic dissociation of the ovaries of immature 14-day-old rats was studied in vitro. The substratum-adherent culture technique developed for studying folliculogenesis in the current study permitted direct
L, Cain, S, Chatterjee, T J, Collins
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Xenobiotic effects on ovarian preantral follicles.
Biology of reproduction, 2012Women are born with a finite population of ovarian follicles, which are slowly depleted during their reproductive years until reproductive failure (menopause) occurs. The rate of loss of primordial follicles is determined by genetic and environmental influences, but certain toxic exposures can accelerate this process.
Connie J, Mark-Kappeler +2 more
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Effect of sectioning on the number of isolated ovine preantral follicles
Small Ruminant Research, 2000The aim of the present study was to test the effect of the interval of serial sections in the tissue chopper on the number of isolated ovine preantral follicles. Best results were obtained when the ovarian fragments were cut in the tissue chopper at interval of 87.5µm (1592 preantral follicles per treatment).
J R Figueiredo +2 more
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