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Postmenopausal androgen-secreting ovarian tumors: challenging differential diagnosis in two cases
(NLM (Medline), 2019)
Postmenopausal hyperandrogenism constitutes a very rare condition of tumoral or non-tumoral origin primarily residing either in the ovary or in the adrenal glands. We present herein two cases with this condition; one with ...
Stress promotes development of ovarian cysts in rats: The possible role of sympathetic nerve activation
(1998)
Activation of the sympathetic innervation precedes the induction of polycystic ovaries in rats given estradiol valerate (EV). The mechanism of induction by EV may thus involve both direct and neurogenic components. We ...
Heat Shock Protein 70 and Sex Steroid Receptors in the Follicular Structures of Induced Ovarian Cysts
(Wiley Blackwell Publishing, Inc, 2009-10)
The purpose of this study was to estimate the expression and relative amounts of estrogen (ER) and progesterone receptors (PR) and their isoforms as well as heat shock protein 70 (HSP70) in ovaries of rats with induced ...
Ovarian steroidal response to gonadotropins and β-Adrenergic stimulation is enhanced in polycystic ovary syndrome: Role of sympathetic innervation
(1993)
Experimental induction of a polycystic ovarian syndrome (PCOS) in rodents by the administration of a single dose of estradiol valerate (EV) results in activation of the peripheral sympathetic neurons that innervate the ...
Blocking of β-adrenergic receptors during the subfertile period inhibits spontaneous ovarian cyst formation in rats
(2012)
As aging proceeds, fertility problems arise, and the success rate of in vitro fertilization declines. During reproductive aging, rat ovaries present spontaneous formation of cysts, followed by a concomitant increase in ...
Survival of women with ovarian carcinomas and borderline tumors is not affected by estrogen and progesterone receptor status
(Korean Soc Gynecology Oncology & ColposcopySeoulCoreia do Sul, 2013)
Intrinsic determinants and predictors of superovulatory yields in sheep: Circulating concentrations of reproductive hormones, ovarian status, and antral follicular blood flow
(Elsevier B.V., 2016-07-01)
Hormonal ovarian superstimulation has contributed to small ruminant reproduction around the world, impacting genetic improvement and zoosanitary programs, contributing to the conservation of endangered species, and supporting ...
Reproductive cycle, ovarian development, and vertebrate-type steroids profile in the freshwater prawn Macrobrachium rosenbergii
(2007-05-01)
This study is intended to characterize the ovarian development and hemolymph vertebrate-type steroids concentration during the reproductive cycle of the freshwater prawn, Macrobrachium rosenbergii. A five-stage classification ...
Tracking the Ovarian Cycle in Black-and-Gold Howlers (Alouatta caraya) by Measuring Fecal Steroids and Observing Vaginal Bleeding
(SPRINGER, 2011)
A better understanding of a species` reproductive physiology can help conservation programs to manage primates in the wild and develop assisted reproductive technologies in captivity. We investigated whether measurements ...
Developmental programming: Prenatal androgen excess disrupts ovarian steroid receptor balance
(BioScientifica, 2009-12)
Steroid hormones play an important role in reproduction and the receptors through which they signal change in a developmental time, follicle stage, and cell-specific manner. Disruption in steroid receptor expression affects ...