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The Mare Model to Study the Effects of Ovarian Dynamics on Preantral Follicle Features
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The Mare Model to Study the Effects of Ovarian Dynamics on Preantral Follicle Features
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Journal Article
The Mare Model to Study the Effects of Ovarian Dynamics on Preantral Follicle Features
2016
Overview
Ovarian tissue collected by biopsy procedures allows the performance of many studies with clinical applications in the field of female fertility preservation. The aim of the present study was to investigate the influence of reproductive phase (anestrous vs. diestrous) and ovarian structures (antral follicles and corpus luteum) on the quality, class distribution, number, and density of preantral follicles, and stromal cell density. Ovarian fragments were harvested by biopsy pick-up procedures from mares and submitted to histological analysis. The mean preantral follicle and ovarian stromal cell densities were greater in the diestrous phase and a positive correlation of stromal cell density with the number and density of preantral follicles was observed. The mean area (mm2) of ovarian structures increased in the diestrous phase and had positive correlations with number of preantral follicles, follicle density, and stromal cell density. Biopsy fragments collected from ovaries containing an active corpus luteum had a higher follicle density, stromal cell density, and proportion of normal preantral follicles. In conclusion, our results showed: (1) the diestrous phase influenced positively the preantral follicle quality, class distribution, and follicle and stromal cell densities; (2) the area of ovarian structures was positively correlated with the follicle and stromal cell densities; and (3) the presence of an active corpus luteum had a positive effect on the quality of preantral follicles, and follicle and stromal densities. Therefore, herein we demonstrate that the presence of key ovarian structures favors the harvest of ovarian fragments containing an appropriate number of healthy preantral follicles.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Animals
/ Biopsy
/ Cattle
/ Density
/ Female
/ Food
/ Hormones
/ Horses
/ Medicine and Health Sciences
/ Methods
/ Ovarian Follicle - physiology
/ Ovaries
/ Research and Analysis Methods
/ Studies
/ Zoology
