Nutritional and metabolic stressors on ovine oocyte development and granulosa cell functions in vitro
نویسندگان
چکیده
منابع مشابه
Activin promotes oocyte development in ovine preantral follicles in vitro
Activins have been implicated as important regulating factors for many reproductive processes. The aim of this study was to determine the effect of activin A on the development of ovine preantral follicles in vitro. Mechanically isolated preantral follicles (161 +/- 2 microm) were cultured for 6 days in the presence of human recombinant activin A (0, 10 and 100 ng/ml). Half of the medium was re...
متن کاملEffect of Non-Esterified Fatty Acids on Oocyte and Granulosa Cell Growth in Vitro
The occurrence of a negative energy balance (NEB) and concurrent metabolic changes may be responsible for impaired reproductive performance. A characteristic metabolic feature of NEB is the mobilization of body fat, reflected in an increased plasma non-esterified fatty acids (NEFA) concentration. High plasma concentration of NEFA is reflected in elevated NEFA follicular concentrations. The aim ...
متن کاملOocyte-granulosa-theca cell interactions during preantral follicular development
The preantral-early antral follicle transition is the penultimate stage of follicular development in terms of gonadotropin dependence and follicle destiny (growth versus atresia). Follicular growth during this period is tightly regulated by oocyte-granulosa-theca cell interactions. Formation of the theca cell layer is a key event that occurs during this transitional stage. Granulosal factor(s) ...
متن کاملMelatonin Impact on In Vitro Development of Mouse Preantral Follicles and Oocyte Maturation
Introduction: Melatonin acts as an indirect antioxidant and is a powerful direct free radical scavenger and direct responses to melatonin in the gonads are detected. This study aims to investigate the influence of different doses of melatonin on preantral follicle development and oogenesis of in vitro cultured mouse ovarian follicles. Materials and Methods: Preantral follicles with diamet...
متن کاملO-11: Diverse Effects of Polyunsaturated Fatty Acids on Oocyte Maturation and Development In vitro
Background: Polyunsaturated fatty acids (PUFAs) have been shown to influence fertility and endocrinology of reproduction and metabolic activity in many species. In dairy cows, we and others have shown changes in steroid and metabolic hormones and prostaglandins leading to alteration of ovarian activity and uterine function. These can influence fertility by changes in folliculogenesis cyclicity ...
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ژورنال
عنوان ژورنال: Cell Stress and Chaperones
سال: 2017
ISSN: 1355-8145,1466-1268
DOI: 10.1007/s12192-017-0846-1