Sexual Steroids
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. Classic and current concepts in adrenal steroidogenesis: a reappraisal
ABSTRACT Adrenal steroid biosynthesis and its related pathology are constant evolving disciplines. In this paper, we review classic and current concepts of adrenal steroidogenesis, plus control mechanisms of steroid pathways, distribution of unique enzymes and cofactors, and major steroid families. We highlight the presence of a “mineralocorticoid (MC) pat
Archives of Endocrinology and Metabolism. Publicado em: 2022
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2. Melasma: a clinical and epidemiological review
Melasma is a chronic acquired hypermelanosis of the skin, characterized by irregular brown macules symmetrically distributed on sun-exposed areas of the body, particularly on the face. It is a common cause of demand for dermatological care that affects mainly women (especially during the menacme), and more pigmented phenotypes (Fitzpatrick skin types III-V).
An. Bras. Dermatol.. Publicado em: 2014-09
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3. Transdermal formulations containing human sexual steroids: development and validation of methods and in vitro drug release
In vitro release of bioidentical hormones in four different liposomal transdermal emulsions (containing testosterone, progesterone, estradiol, or estradiol and estriol) was assessed. For this purpose, novel high-performance liquid chromatography methods were developed and validated in an eco-friendly manner and used to determine the in vitro release of such
Quím. Nova. Publicado em: 2014
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4. Perfil dos esteroides gonadais e expressão dos hormônios folículo estimulante (FSH) e luteinizante (LH) durante a inversão sexual de Epinephelus marginatus (Teleostei: Serranidae), hermafrodita protogínico, utilizando-se inibidor de aromatase / Gonadal steroids profile and expression of follicle-stimulating (FSH) and luteinizing (LH) hormones during the sex reversal of Epinephelus marginatus (Teleostei: Serranidae) hermaphroditic protogynous, using aromatase inhibitor
A plasticidade do desenvolvimento gonadal em peixes, que contrasta com os padrões mais estáveis encontrados nos demais vertebrados, deu origem a várias questões intrigantes relativas tanto ao seu significado adaptativo quanto aos fatores genéticos e fisiológicos que modulam o processo. A inversão do sexo em peixes hermafroditas seqüenciais (protândr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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5. Localização das diferentes formas de GnRH no encefálo de Astyanax altiparanae (Garutti e Britski, 2000) e Danio rerio (Hamilton, 1822). / Localization of different forms of GnRH in the brain of Astyanax altiparanae (Garutti and Britski, 2000) and Danio rerio (Hamilton, 1822).
O GnRH é um decapeptídeo que está envolvido na reprodução, estimulando a hipófise a liberar gonadotropinas (LH e FSH), as quais regulam a esteroidogênese e gametogênese. Ainda, o GnRH age como neuromodulador atuando no comportamento sexual. A distribuição de suas isoformas pode ajudar a revelar a função específica de cada GnRH. A principal ênfa
Publicado em: 2010
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6. Caracterização do epitelio germinativo das femes e machos de Gymnotus sp., e perfil hormonal durante o ciclo reprodutivo (Teleostei, Ostariophysi, Gymnotiformes) / Characterization of the female and male germinal epithelium of the Gymnotus sp., and the hormonal profile during the reproductive cycle (Teleostei, Ostariophysi, Gymnotiformes)
Gymnotiformes, os peixes faca, constituem um importante componente da fauna Neotropical de água doce das Américas Central e do Sul. Este grupo compreende mais de 100 espécies válidas, distribuídas em 27 gêneros. Gymnotus sp., representante da família Gymnotidae, é conhecido regionalmente como tuvira, morenita, ituí ou sarapó. Apesar do fato que a d
Publicado em: 2010
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7. Esteróides gonadais e metabolismo lipídico ao longo do ciclo reprodutivo de Arapaima gigas (SCHINZ, 1822) em ambiente natural / Gonad steroids and lipid metabolism along the reproductive cycle of Arapaima gigas (SCHINZ, 1822) in natural environmet
The aim of the present study was to investigate the possible physiological alterations related with reproduction in males and females of Arapaima gigas (pirarucu) in their natural environment. Pirarucu is an obligatory aerial respiration species belonging to a very ancient group of teleosts and inhabits Amazonian river. The main goals of this study were to d
Publicado em: 2009
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8. 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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9. Associação entre polimorfismos do gene do receptor alfa de estrogênio com a densidade mamográfica em mulheres após a menopausa. / Estrogen alpha receptor gene polymorphisms association with mammographic density in postmenopausal women.
Introduction: Genes that encode proteins involved at biosynthesis, action and metabolism of sexual steroids are polymorphics. This condition could explain individual variations in mammographic density. The objectives of this study were to evaluate a possible association of clinical characteristics and polymorphisms HaeIII, MspI and XbaI of the estrogen recep
Publicado em: 2009
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10. Estudos fundamentais e aplicações envolvendo hormônios esteróides por meio de eletroforese capilar / Fundamental study and applications involving steroids hormones by capillary electrophoresis
In the first chapter of this work, the classification and importance of the sexual steroids for maintenance of the life human is presented. The next chapter presents general aspects on capillary electrophoresis, such as operation, terminology and considerations on the electroosmotic flow and electroforetic mobility. The third chapter shows a study of interac
Publicado em: 2008
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11. A busca do corpo ideal como sintoma contemporâneo: os significados do corpo para os adolescentes masculinos que freqüentam academias de ginástica na cidade de Montes Claros MG
The objective of this research goes into understanding the senses attributed to the body by the male adolescents, frequenting fitness centers in the city of Montes Claros MG, acting as motivating factors for the practice of physical training and for the consumption of energetic or anabolic steroids. Nine male adolescents were interviewed chosen from two fitn
Publicado em: 2008
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12. Estudo do perfil sérico dos hormônios esteróides (estradiol e progesterona) e do comportamento reprodutivo de fêmeas jovens de avestruz (Struthio camelus) criadas no Brasil / Study of the steroids hormones profiles (estradiol and progesterone) and the reproductive behavior of young female ostriches (Struthio camelus) farmed in Brazi
The purpose of this work was to study the serum levels of estradiol and progesterone and analyze their relationship with the development of the reproductive behavior in young female ostriches (Struthio camelus) during sexual maturity. The first experiment studied two young females, through blood samples, three times a week, for measurement of estradiol and p
Publicado em: 2008