Antioxidant capacity of follicular fluid in relation to follicular size and stage of estrous cycle in buffaloes

Theriogenology
K H El-Shahat, M Kandil

Abstract

The present study was designed to evaluate the changes in the concentrations of different antioxidants, such as glutathione (GSH), glutathione reductase (GR), superoxide dismutase (SOD), and catalase (CAT), in the follicular fluid collected from different follicular size categories in relation to stage of estrous cycle in buffaloes. In addition, malondialdehyde (MDA) as an indicator for lipid peroxidation was also estimated. Fifty pairs of buffalo ovaries were collected from a local slaughterhouse. Based on ovarian structures, the cycle was divided into follicular and luteal phase. The follicles on each pair were classified into three groups; small (≤ 3 mm), medium (4-9 mm) and large (≥ 10 mm). The concentrations of SOD, CAT, GSH, and GR in the follicular fluid of each group as well as MDA were estimated. Results indicated that there was a significant decrease (P < 0.05) in the average numbers of small follicles obtained at the follicular phase than those obtained at the luteal phase of the cycle. However, the mean numbers of the large sized follicles was significantly increased (P < 0.05) in the follicular phase than in the luteal phase. Large follicles obtained at the luteal phase had a significantly higher (P < 0.05) concent...Continue Reading

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Citations

Nov 18, 2016·The Journal of Endocrinology·Ebrahim AsadiFarid Abolhassani
Nov 27, 2019·Tropical Animal Health and Production·R L SciorsciA Rizzo
Nov 18, 2017·Oxidative Medicine and Cellular Longevity·Shan WangXinghui Liu
Sep 17, 2020·Reproductive Sciences·Jitender Kumar BhardwajPriyanka Saraf

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