منابع مشابه
Human ovarian theca cells are a source of renin.
Human ovarian follicular fluid contains renin-like activity. In normal women, circulating levels of prorenin, the biosynthetic precursor of renin (EC 3.4.23.15), change in parallel with changes in progesterone during the menstrual cycle. Therefore, the ovary has been implicated as a source of plasma prorenin. In the present studies, we report the finding of high concentrations of prorenin in hu...
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 کاملSteroidogenesis in Theca Cells of Chicken Follicles
The aim of this study was to assess and compare the steroidogenic response to luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in cells of the theca interna and theca externa isolated from follicles at different stages of maturation. Cells of the theca interna and theca externa isolated from the largest, second largest and third-fifth largest preovulatory follicles of the chicken...
متن کاملLipopolysaccharide (LPS) Inhibits Steroid Production in Theca Cells of Bovine Follicles In Vitro: Distinct Effect of LPS on Theca Cell Function in Pre- and Post-selection Follicles
In postpartum dairy cows, lipopolysaccharide (LPS) derived from gram-negative bacteria such as Escherichia coli causes uterine inflammation and leads to ovarian dysfunction. The aim of this study was to determine the effect of LPS on steroid production in bovine theca cells at different stages of follicular development. Theca cells isolated from pre- and post-selection follicles (PRFs, <8.5 mm ...
متن کاملDirect actions of kit-ligand on theca cell growth and differentiation during follicle development.
The direct actions of kit-ligand/stem cell factor (KL) in developing ovarian follicles were investigated. Previous studies have shown that granulosa cells express KL that can support oocyte development. The current study demonstrates that KL can also act directly on theca cells to promote cellular growth and differentiation. Through RT-PCR analysis it was shown that bovine granulosa cells expre...
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ژورنال
عنوان ژورنال: Biology of Reproduction
سال: 2015
ISSN: 0006-3363,1529-7268
DOI: 10.1095/biolreprod.115.131383