background: nandrolone decanoate (nd) is an anabolic androgenic steroid (aas) which influences the ovarian structure and function. we assessed the effects of nd on the ovarian volume, number of primordial follicles, and level of hormones and also evaluated the modulatory effects of gonadotropins on the histopathological changes imposed by the administration of nd. methods: six groups of sprague...

background: premature ovarian failure (pof) is a common condition; its incidence is estimated to be as great as 1 in 100 by the age of 40 years. physiologic replacement of ovarian steroid hormones seems rational until the age of normal menopause. temporary return of ovarian function and pregnancy may occur rarely in women with pof. we report a case of pof who conceived during hormone replacemen...

Introduction: Polycystic ovarian syndrome (PCOS) is the most common endocrine disorder in females of reproductive age group. It characterised by menstrual irregularities, enlarged ovaries, infertility, high levels male hormones, excess hair on face and body, acne obesity. PCOS can result from abnormal function hypothalamic-pituitary-ovarian axis. Women with have an increased risk diabetes, bloo...

Activins and estrogens participate in regulating the breakdown of ovarian germ cell nests and follicle assembly in mammals. In 1994, our group reported elevated frequencies of abnormal, multioocytic ovarian follicles in 6 month old, environmental contaminant-exposed female alligators after gonadotropin challenge. Here, we investigated if maternal contribution of endocrine disrupting contaminant...

Background: Nandrolone decanoate (ND) is an anabolic androgenic steroid (AAS) which influences the ovarian structure and function. We assessed the effects of ND on the ovarian volume, number of primordial follicles, and level of hormones and also evaluated the modulatory effects of gonadotropins on the histopathological changes imposed by the administration of ND. Methods: Six groups of Sprague...

The formation of granulosa-cell tumors and subcutaneous tissues or testes of intact and cas luteomas in intrasplenic ovarian grafts in castrated trated mice did not readily become tumorous. rats (1) and in intrasplenic and intrapancreatic The present experiments are concerned with the ovarian grafts in castrated male and female mice influence of gonadal and gonadotrophic hormones has been repor...

Bone marrow-derived stem cells (BMDSCs) play an essential role in organ repair and regeneration. The molecular mechanisms by which hormones control BMDSCs proliferation and differentiation are unclear. Our aim in this study was to investigate how a lack of ovarian or/and thyroid hormones affects stem cell number in bone marrow lineage. To examine the effect of thyroid or/and ovarian hormones on...

The current studies demonstrate the critical importance of ovarian hormones in the initiation and promotion of carcinogenesis of mammary glands in rats by polynuclear hydrocarbons. Removal of ovarian hormones from the rats immediately after the ad ministration of the carcinogenic hydrocarbons either inhibited or profoundly reduced the incidence of mammary cancer. Excision of ovaries beyond 7 da...

Several lines of evidence suggest that ovarian hormones influence glucose homeostasis, although their exact role in humans has not been clearly defined. In the present study, we sought to test the hypothesis that ovarian hormones regulate glucose homeostasis by examining the effect of pharmacologically induced ovarian hormone deficiency on glucose disposal and insulin secretion. Young, healthy ...