Gonadal Hormones
Mostrando 1-12 de 75 artigos, teses e dissertações.
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1. Effect of Photoperiod on the Egg Production, Plasma Luteinizing Hormone, Follicle-Stimulating Hormone, Gonadal Hormones, and Mrna Levels of Lh and Fsh in the Hypothalamic-Pituitary-Gonadal Axis of Pigeons
ABSTRACT We investigated the egg production, changes in luteinizing hormone (LH), follicle-stimulating hormone (FSH), gonadal hormones, and their mRNA levels in the hypothalamic-pituitary-gonadal axis of White King pigeons submitted to different photoperiods. The treatments consisted of three photoperiods (8 h light (L):16 h dark (D), 12L:12D, and 16L:8D), w
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
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2. Stress, strain, and pregnancy outcome in postpartum cows
Abstract Stress affects the productivity and fertility of cattle. Stress causes strain and individual animals experience different amounts of strain in response to the same amount of stress. The amount of strain determines the impact of stress on fertility. Typical stresses experienced by cattle include environmental, disease, production, nutritional, and ps
Anim. Reprod.. Publicado em: 28/11/2019
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3. Effect of metformin on semen quality
ABSTRACT Various studies have linked metformin, a universally antidiabetic drug, with semen quality; however, such a direct link has not been established. This review systematically addresses and summarizes the effect of metformin on semen quality, particularly sperm function. We searched the MEDLINE electronic database for English articles and abstracts con
Braz. J. Pharm. Sci.. Publicado em: 2016-12
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4. Effects of the phytoestrogen genistein on the development of the reproductive system of Sprague Dawley rats
OBJECTIVES: Genistein is known to influence reproductive system development through its binding affinity for estrogen receptors. The present study aimed to further explore the effect of Genistein on the development of the reproductive system of experimental rats. METHODS: Eighteen post-weaning female Sprague Dawley rats were divided into the following groups
Clinics. Publicado em: 2013
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5. 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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6. Estrogen and progesterone receptors in endometrial polyps of women exposed and not exposed to tamoxifen and in atrophic endometrium / Receptores de estrógeno e progesterona em pólipos endometriais de usuárias e não usuárias de tamoxifeno e no endométrio atrófico
Introduction: Tamoxifen has been used for the treatment of strogen receptor-positive breast cancer. The effect of tamoxifen in breast cancer is the it inhibition cancer cell growth by competitive antagonism with strogen for strogen receptor (ER). The mechanism of action of tamoxifen in this receptor varies among different tissues, with antagonist effect (e.g
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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7. Estrous cycle and stress: influence of progesterone on the female brain
The female brain operates in a constantly changing chemical milieu caused by cyclical changes in gonadal hormones during the estrous cycle (menstrual cycle in women). Such hormones are highly lipophilic and pass readily from the plasma to the brain where they can influence neuronal function. It is becoming clear that the rapid reduction in peripheral circula
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-04
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8. Influência dos hormônios sexuais na analgesia induzida pelo estresse / Influence of sex hormones in stress-induced analgesia
Temporomandibular disorders comprehend a variable group of conditions which result in joint and/or muscle pain and contribute to the development of acute pains, being more prevalent in women than men, especially during the reproductive period. They involve the muscles of mastication and temporomandibular joint (ATM), being usually associated with inflammator
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2011
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9. Testículo de Astyanax altiparanae Garutti e Britski, 2000. Estudo morfológico, ultraestrutural e imuno-histoquímico. / Testis of Astyanax altiparanae Garutti e Britski, 2000. Ultrastructural and immunohistochemical study.
O teleósteo Astyanax altiparanae, popularmente conhecido como lambari importância econômica e ecológica. Poucos são os trabalhos que visam demonstrar a morfologia dos testículos de brasileiros. O objetivo deste estudo foi classificar e demonstrar as alterações morfológicas do testículo de Astyanax altiparanae ao longo do ciclo gonadal e quantificar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2011
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10. Influência da flutuação hormonal sobre o movimento mandibular mastigatório de portadoras de deslocamento de disco articular / Influence of the femine hormonal fluctuations on jaw masticatory movement in patients with articular disc displacement
A natureza multifatorial e os dados epidemiológicos envolvendo gênero sugerem que as Desordens Temporomandibulares (DTM) tenham como um dos componentes etiológico e de manutenção, os hormônios reprodutivos femininos. Este estudo avaliou a influência da flutuação hormonal nas fases menstrual, folicular, ovulatória, e lútea, sobre o padrão de movim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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11. A high corticosterone/DHEA-s ratio in young rats infected with Trypanosoma cruzi is associated with increased susceptibility
We have previously established that young male rats are more susceptible to the effects of Trypanosoma cruzi infection than adult rats. To explore underlying age-associated differences in disease outcome, we simultaneously assessed hormone levels and cytokine release throughout the acute infection period in young and adult rats infected with T. cruzi. Young
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-06
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12. Influence of the feminine hormonal fluctuation on bite force and masticatory performance in patients with temporomandibular disorders / Influência da flutuação hormonal feminina na força de mordida e performance mastigatória de pacientes portadoras de desordens temporomandibulares
A maior prevalência de desordens temporomandibulares (DTMs) ocorre especialmente em mulheres durante a fase reprodutiva, sugerindo uma possível influência dos hormônios reprodutivos na etiologia destas desordens. O objetivo do presente trabalho foi avaliar a possível influência das flutuações hormonais ocorridas durante o ciclo menstrual, sobre a for
Publicado em: 2010