نتایج جستجو برای: ویریلسیم virilism
تعداد نتایج: 751 فیلتر نتایج به سال:
Evidence of hormonally induced sex reversal of the gonad has been furnished for cold blooded vertebrates and birds, but there is little known regarding such processes in mammals. Most authors attribute the gonadal changes in the freemartin to the heterosexual hormone. I n the fowl, Dantchakoff ('36) and Willier, Gallagher and Koch ( '37) obtained feminization of the testis by estrogens. I n fis...
Congenital adrenal hyperplasia is attributed to inherited enzyme defects in the adrenal cortex. The classical form results in reduced production of cortisol and aldosterone, accompanied by an increase in production of adrenal cortical androgens. This causes virilisation in girls, adrenocortical failure and early puberty in both sexes. This article describes the genetics, clinical picture, diagn...
Some testosterone-producing adrenal tumors can be successfully treated with long-acting GnRH analogs and adrenal venous sampling can be useful to detect rare ectopic sex steroid-producing tumors or confirm bilateral adrenal androgen hyperproduction in female hyperandrogenism.
The terms pseudo-hermaphroditism and hermaphroditism have been used in different senses by various authors and for this reason they were discarded by Wilkins (1950). He describes as 'intersexes' (hermaphrodites) those cases in which the sexual dimorphism is not due to a demonstrable endocrine abnormality, and as cases of 'sex reversal' those in which there is an endocrine abnormality. Hormonal ...
Testosterone is an important hormone in the sexual differentiation of the brain, contributing to differences in cognitive abilities between males and females. For instance, studies in clinical populations such as females with congenital adrenal hyperplasia (CAH) who are exposed to high levels of androgens in utero support arguments for prenatal testosterone effects on characteristics such as vi...
Victims of Infanticide and Conspecific Bite Wounding in a Female-Dominant Primate: A Long-Term Study
The aggression animals receive from conspecifics varies between individuals across their lifetime. As poignantly evidenced by infanticide, for example, aggression can have dramatic fitness consequences. Nevertheless, we understand little about the sources of variation in received aggression, particularly in females. Using a female-dominant species renowned for aggressivity in both sexes, we tes...
BACKGROUND Despite young people being a key population for HIV prevention, the HIV epidemic amongst young Brazilians is perceived to be growing. We therefore reviewed all published literature on HIV prevalence and risk factors for HIV infection amongst 10-25 year olds in Brazil. METHODS We searched Embase, LILACS, Proquest, PsycINFO, PubMed, Scopus and Web of Science for studies published up ...
A 14-yr-old native American girl from the Iroquois Nation was referred as a potential patient with the syndrome of apparent mineralocorticoid excess. Instead, her evaluation revealed resistance to glucocorticoids, mineralocorticoids, and androgens, but no resistance to vitamin D or thyroid hormones. She lacked Cushingoid features despite significantly high cortisol levels. Menstruation was regu...
BACKGROUND AND OBJECTIVE It is unclear whether the proportion of infants with a disorder of sex development who are raised as male or female has changed over time. The temporal trends in sex assignment of affected cases entered in the International Disorder of Sex Development (I-DSD) Registry were studied. METHODS Cases of disorders of sex development reported as partial androgen insensitivit...
The sex-determining gene her-1 is required for male development in Caenorhabditis elegans. In XO males, two her-1 mRNAs, her-1a and her-1b, are transcribed from two separate promoters: P1, located in the 5'-flanking region, and P2, located in the large second intron. In XX hermaphrodites, accumulation of both her-1 transcripts is repressed by the sdc genes, which in turn are negatively regulate...
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