Results 181 to 190 of about 9,462 (214)
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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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Isolation and long-term culture of human preantral follicles
Fertility and Sterility, 1993To isolate intact preantral follicles from the human ovary for in vitro studies.Premenopausal human ovary was digested by a mixture of collagenase and deoxyribonuclease (DNase) for 1 hour at 37 degrees C and for 36 hour at 4 degrees C. Intact preantral follicles at classes 1 and 2 were isolated and cultured for up to 120 hours in a serum-free Dulbecco ...
S K, Roy, B J, Treacy
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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).
, Amorim +4 more
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In vitro Growth of Sheep Preantral Follicles: Which Perspectives?
Veterinary Research Communications, 2003G. Capacchietti1, S. Cecconi2, E. Colantoni2, V. Russo1, P. Berardinelli1, B. Barboni1 and M. Mattioli1 1Dip. Scienze Biomediche Comparate, Universita degli Studi di T eramo; 2Dip. Scienze e T ecnologie Biomediche,Universita degli Studi di L ’Aquila *Correspondence: Dip. Scienze Biomediche Comparate, sezione Fisiologia, Facolta di Medicina Veterinaria,
Cecconi S +6 more
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Morphogenetic reaggregation and luteinization of mouse preantral follicle cells
American Journal of Anatomy, 1979AbstractSmall (60‐90 μm) and large (100‐130 μm) preantral follicles were isolated from adult mouse ovaries by a collagenase‐dissection technique. These follicles were composed of resting oocytes surrounded either by granulosa cells, only, or by granulosa and undifferentiated theca cells.
S V, Nicosia, R, Tojo
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Theriogenology, 2015
Oocytes from preantral follicles could be an alternative for in vitro maturation because most follicles are at the preantral stage. There are few studies that have sought to estimate the number of preantral follicles in bitches. Therefore, the aims of this study were to estimate the population of preantral follicles in the ovaries of small- and medium ...
N T, Lunardon +5 more
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Oocytes from preantral follicles could be an alternative for in vitro maturation because most follicles are at the preantral stage. There are few studies that have sought to estimate the number of preantral follicles in bitches. Therefore, the aims of this study were to estimate the population of preantral follicles in the ovaries of small- and medium ...
N T, Lunardon +5 more
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Zygote, 2007
SummaryThe aim of this study was to establish a basic manipulation protocol of preantral follicles for deriving developmentally competent oocytes. Primary, early and late secondary follicles retrieved from the ovaries of 14-day-old F1 (C57BL/6 × DBA2) female mice mechanically or enzymatically were cultured singly and in vitro growth of the follicles ...
S T, Lee +4 more
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SummaryThe aim of this study was to establish a basic manipulation protocol of preantral follicles for deriving developmentally competent oocytes. Primary, early and late secondary follicles retrieved from the ovaries of 14-day-old F1 (C57BL/6 × DBA2) female mice mechanically or enzymatically were cultured singly and in vitro growth of the follicles ...
S T, Lee +4 more
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Isolation of preantral follicles from buffalo ovaries
Veterinary Record, 2001P S, Gupta +3 more
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In vitro growth of preantral follicles in cats
EXP. 1 The objective was to determine effects of thyroxin (T4)and activinA on in vitro growth and morphology of preantral feline ovarian follicles. Preantral follicles (86.3± 18.7 µm) were isolated from fresh ovaries of domestic cats. Healthy follicles were cultured individually for 14 d in 20-µL microdrops of basic culture medium supplemented with ...openaire +1 more source