Androstenedione
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. A systematic review of hormone levels, biomarkers of cellular injury and oxidative stress in multi-stressor military field training exercises
ABSTRACT The fundamental objective of military field training exercises (FTX) is to prepare military personnel for real-life operations through simulated scenarios. These training sessions often require extreme physical efforts with prolonged, high-intensity exercises that can be combined with food restrictions and partial, or total, sleep deprivation. Such
Archives of Endocrinology and Metabolism. Publicado em: 2022
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2. Metabolic and hormonal assessment of adolescent and young adult women with prior premature adrenarche
OBJECTIVE: Follow-up studies of girls with premature adrenarche have reported the development of polycystic ovary syndrome, insulin resistance, and dyslipidemia and a propensity to cardiovascular disease. The aim of this study was to analyze the presence of these conditions in patients previously treated at the Universidade Federal do Triângulo Mineiro. M
Clinics. Publicado em: 19/06/2019
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3. Alteração do ciclo menstrual na adolescência: manifestação precoce da Síndrome Metabólica? / Alteration on menstrual cycle in adolescence: early manifestation of Metabolic Syndrome?
Evidences have appeared throughout the last decade that the metabolic syndrome(MS) (increasingly reported among teens) begins in intra-uterine life and its signs and symptoms are already present in adolescence. Nevertheless, specific diagnostic criteria for this age group are missing. The menstrual cycle represents the result of the normal functioning not on
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/07/2010
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4. Utilização de progesterona, estradiol, androstenediona e hormônio folículo-estimulante no cultivo in vitro de folículos pré-antrais caprinos. / Use of progesterone, estradiol, androstenedione, and follicle-stimulating hormone in in vitro culture of caprine preantral follicles.
O objetivo deste trabalho foi verificar os efeitos da progesterona, da androstenediona e do estradiol, na presença ou ausência de hormônio folículo-estimulante (FSH), sobre a sobrevivência, ativação e o crescimento de folículos pré-antrais caprinos. Fragmentos de tecido ovariano foram cultivados por 1 ou 7 dias em Meio Essencial Mínimo modificado (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/10/2009
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5. CLINICAL, ENDOCRINE AND METABOLIC EFFECTS OF ROSIGLITAZONE ON POLYCYSTIC OVARY SYNDROME / Efeitos clínicos, endócrinos e metabólicos da rosiglitazona na síndrome dos ovários policísticos.
The objectives of the present study are to evaluate the clinical, endocrine and metabolic effects of the rosiglitazone in patients with polycystic ovarian syndrome before and after twelve weeks of treatment. It was be evaluated, besides menstrual pattern and the hyperandrogenism, the hormonal profile (FSH, LH, 17 B-estradiol, total and free testosterone, 17
Publicado em: 2009
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6. Search of prostatic tissue in 46,XX congenital adrenal hyperplasia patients / Pesquisa de tecido prostático em pacientes 46,XX portadoras da forma clássica de hiperplasia congênita das supra-renais
Introduction: The presence of prostatic tissue in 46,XX congenital adrenal hyperplasia (CAH) patients has already been reported. The development of this tissue is due to androgenic stimulation in Skenes paraurethral glands by dihydrotestosterone. These glands have histological and enzymatic homology with the prostate. So far, two cases with alterations of pr
Publicado em: 2007
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7. Estradiol and testosterone concentrations in follicular fluid as criteria to discriminate between mature and immature oocytes
The objective of the present study was to examine the association between follicular fluid (FF) steroid concentration and oocyte maturity and fertilization rates. Seventeen infertile patients were submitted to ovulation induction with urinary human follicle-stimulating hormone, human menopausal gonadotropin and human chorionic gonadotropin (hCG). A total of
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-11
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8. Phenotype and genotype correlation of the microconversion from the CYP21A1P to the CYP21A2 gene in congenital adrenal hyperplasia
Deficiency of 21-hydroxylase is the most common form of congenital adrenal hyperplasia (CAH-21OH). We determined by allele-specific PCR the frequency of microconversion in the CYP21A2 gene in 50 Brazilian patients with the classical (salt wasting: SW and simple virilizing: SV) forms and nonclassical (NC) form of CAH-21OH and correlated genotype with phenotyp
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-10
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9. Biosynthesis and metabolism of steroid hormones by human adrenal carcinomas
Over a 15-year period, our university-based laboratory obtained 125 adrenal tumors, of which 15 (12%) were adrenal cortical carcinomas. Of these, 6 (40% of the carcinomas) occurred in patients with clear clinical manifestations of steroid hormone excess. Adrenal cortical carcinoma cells derived from the surgically resected tumors in 4 of these patients were
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-10
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10. Splanchnic Extraction and Interconversion of Testosterone and Androstenedione in Man*
A constant infusion of 3H-testosterone and 14C-androstenedione was administered to four human subjects, two males and two females, until the concentrations of radioactive testosterone and androstenedione in systemic plasma became constant. At that time the concentrations of radioactive testosterone and androstenedione in hepatic vein plasma were determined.
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11. Source of raised serum estrogens in male rats with portal bypass.
We sought to establish the mechanism for the raised serum estrogen levels that occur in male rats with portal hypertension and resultant portal bypass. Using the portal vein ligated (PVL) rat model, we evaluated plasma steroid hormone concentrations, metabolic clearance rate (MCR) of estradiol, and hepatic metabolism of androstenedione to estrogens and other
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12. Sites of in vivo extraction and interconversion of testosterone and androstenedione in dogs
The interconversion and extraction of testosterone and androstenedione across and within different tissues or areas have been studied by the constant infusion technique. The results were calculated using the 3H/14C ratios and radioactive concentrations of testosterone and androstenedione obtained from afferent and efferent blood and tissues at equilibrium. I