Sexual Steroids
Mostrando 13-24 de 43 artigos, teses e dissertações.
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13. Sexual steroids profile in dogs with hyperadrenocorticism - Diagnostic trait and clinical relations / Perfil de esteróides sexuais em cães com hiperadrenocorticismo - aspectos de diagnóstico e correlações clínicas
As enfermidades endócrinas, notadamente o hiperadrenocorticismo, têm grande importância dentre os quadros mórbidos que acometem a espécie canina. A produção excessiva de ACTH pode, nas adrenais, estimular o aumento não só de glicocorticóides, mas também de hormônios sexuais. Os objetivos do presente estudo foram: avaliar as concentrações séric
Publicado em: 2007
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14. Determination of serum levels of corticosterone and sexual steroid hormones, stress-induced by physical restraint and venom extraction, on Bothrops jararaca (Ophidia: Viperidae) / Determinação dos níveis séricos de corticosterona e hormônios esteróides sexuais, induzidos pelo estresse da contenção física e da extração de veneno, em Bothrops jararaca (Ophidia: Viperidae).
In the present studies, 30 snakes of the species B. jararaca with three years old, born in captivity at the Laboratório de Herpetologia - Instituto Butantan - were divided into 3 experimental groups, each one containing 10 animals. The mean weight and snout vent length of males and females were 97 grams and 75 centimeters and 281 grams and 99 centimeters, r
Publicado em: 2006
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15. Morpho-functional characteristics of sex reversal in Synbranchidae (Teleostei: Synbranchiformes) / Perfil morfo-funcional da inversão de sexo em Synbranchidae (Teleostei: Synbranchiformes)
Teleost fishes exhibit several sexual patterns during their ontogeny, in which the gonads change into functional ovaries or testes. In distinct Orders, both gonochoristic and hermaphrodite species, simultaneous as well as sequential or consecutive, can be found. In sequential hermaphroditism (protandrous or protogynous), sex change in adult individuais invol
Publicado em: 2006
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16. Effect of sexual steroids on the calcium content of aortic atherosclerotic plaque of oophorectomized rabbits
We determined the effect of conjugated equine estrogen plus medroxyprogesterone acetate on calcium content of aortic atherosclerotic lesions in oophorectomized adult New Zealand rabbits submitted to a cholesterol rich diet. Five groups of 10 animals each were studied: G1 = control, G2 = cholesterol diet only, G3 = diet plus conjugated equine estrogen (0.625
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-05
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17. Spontaneous inflammatory pelvic disease in adult non-castrated female rats treated with estrogen
The adaptive immune response of the genital tract is under the control of sexual steroids; however, the influence of sex hormones on innate immune mechanisms of the genital mucosa are only beginning to be understood. We found that long-term estrogen treatment increases the risk for inflammatory pelvic diseases in adult non-castrated female rats. Female rats
Brazilian Journal of Infectious Diseases. Publicado em: 2005-02
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18. Fecal androgen levels in common marmoset (Callithrix jacchus) males living in captive family groups
In captive common marmoset groups, the reproductive inhibition observed in subordinate female seems to be a result of olfactory, visual and behavioral cues from the dominant female. However, few studies have examined the relationship among adult males living in the same social group. These studies have shown that reproductive failure among peer males seems t
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-01
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19. Influence of the sexual steroids on the voice speak in women of the climacteric / "Influência dos esteróides sexuais sobre a voz falada em mulheres do climatério"
The complaints between the women are frequent, particularly between the singers, of whom alterations in the voice occur after the menopause. It has been reported, in literature, that woman fundamental frequency is altered in this phase of the life. As the vocal fold possess receivers for the sexual steroids are possible that these alterations are decurrent
Publicado em: 2005
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20. Caracterização do crescimento, reprodução e perfil hormonal dos esteróides sexuais do Pirarucu,Arapaima gigas (SCHINZ, 1822) em condições de cativeiro.
The pirarucu, Arapaima gigas, is one of the most important fish resource of Amazon region. The principal difficulty in culture development is the fingerlings production and no controlled captivity reproduction. To contribute to the fish reproduction management, the purpose of this study was to characterize the growth, reproduction and hormonal profile of pir
Publicado em: 2005
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21. Avaliação da função reprodutiva de fêmeas de peixe-boi da Amazônia (Trichechus inunguis, Natterer, 1883), mantidas em cativeiro, por meio da extração e dosagem de esteróides fecais / Reproductive assessment in captive females of Amazonian manatees (Trichechus inunguis, Natterer, 1883), by fecal steroid extraction and quantification
Neste estudo avaliou-se a função reprodutiva de fêmeas de peixe-boi da Amazônia (Trichechus inunguis) mantidas em cativeiro no Laboratório de Mamíferos Aquáticos do Instituto Nacional de Pesquisas da Amazônia (n=4) e no Centro de Preservação e Pesquisas de Mamíferos Aquáticos - Manaus Energia S.A. (n=2), por meio da extração e quantificação d
Publicado em: 2004
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22. Características físicas, químicas e biomecânicas dos ossos de ratas ovariectomizadas tratadas com fluoreto de sódio.
Ovariectomized (ovx) rat bones were used to evaluate the effects of sodium fluoride treatment on bone physical, chemical and biomechanical parameters. Wistar rats, with four months of age, were randomly divided in: basal, intact and ovx treated with sodium fluoride (0, 20, 40, 60, 80 and 100 ppm) groups. The basal group was sacrificed in the beginning of the
Publicado em: 2003
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23. Influencia de esteroides sexuais sobre o conteudo histaminico do miocardio de cães
It hás been demosntrated that histamine depletion in an isquemic myocardial area, respect to normal myocardium, appears higher in bitches than in dogs. It has been also show that histamine depletion occurs in the rat uterus as an obligatory step in sex hormone-induced hyperemia. The hypothesis was then advanced that histamine could be consumed in the isquem
Publicado em: 1981
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24. Hypophyso-Gonadal Function in Humans during the First Year of Life: I. EVIDENCE FOR TESTICULAR ACTIVITY IN EARLY INFANCY
Total and unbound testosterone and Δ4-androstenedione have been determined in 104 cord blood samples. The same sexual steroids and pituitary gonadotropins have been measured in 46 normal male infants aged 27-348 days and 34 normal female infants aged 19-332 days.