Luteinizing Hormone Receptors
Mostrando 1-12 de 100 artigos, teses e dissertações.
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1. Nitric oxide modulates ATP-evoked currents in mouse Leydig cells
Testosterone synthesis within Leydig cells is a calcium-dependent process. Intracellular calcium levels are regulated by different processes including ATP-activated P2X purinergic receptors, T-type Ca2+ channels modulated by the luteinizing hormone, and intracellular calcium storages recruited by a calcium-induced calcium release mechanism. On the other hand
Braz J Med Biol Res. Publicado em: 15/03/2018
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2. Hypothalamic transcriptional expression of the kisspeptin system and sex steroid receptors differs among polycystic ovary syndrome rat models with different endocrine phenotypes
OBJECTIVES: Polycystic ovary syndrome is a heterogeneous endocrine disorder that affects reproductive-age women. The mechanisms underlying the endocrine heterogeneity and neuroendocrinology of polycystic ovary syndrome are still unclear. In this study, we investigated the expression of the kisspeptin system and gonadotropin-releasing hormone pulse regulator
Clinics. Publicado em: 2017-08
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3. The testis of the mice C57/BL6 offspring in adulthood have alterations due to maternal caffeine consumption
PURPOSE: To investigate the effects of the maternal caffeine consumption during pregnancy to adult male testis mice offspring. METHODS: Twenty pregnant mice were divided into control group (c) and caffeine group (cf). dams received daily saline or 20 mg/kg of caffeine subcutaneously. Male offspring were monitored daily until 13th week. The testis were
Acta Cir. Bras.. Publicado em: 2014-01
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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. Receptores do hormônio luteinizante em diferentes porções do oviduto de éguas em estro. / Receptors for luteinizing hormone in different portions of the oviduct of mares in estrus
Embryonic development begins with the fertilization of the egg by the sperm in the oviduct. The oviduct is a tortuous organ which extended measures 20 to 30cm and is divided into three parts: the isthmus, ampulla and infundibulum. Hormones influence the activity of target cells by binding to specific receptor molecules. Immunohistochemistry is the set of pro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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6. Immunohistochemical identification of luteinizing, estrogen and progesterone receptors in the extra-gonadal reproductive tract of mares / Identificação imunohistoquímica de receptores para hormônio luteinizante, estrôgeno e progesterona no trato reprodutivo extragonadal da égua
O objetivo deste trabalho foi verificar a presença e a localização de receptores para hormônios esteróides e gonadotróficos, através da técnica de imunohistoquímica, pelo método de peroxidase-antiperoxidase (PAP), nos diferentes tecidos que compõe o trato genital da égua e a variação de reatividade destes receptores durante o ciclo estral e no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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7. Expressão de fatores angiogênicos em corpo lúteo cíclico e superovulado de búfalas / Expression of angiogenic factors in cyclic and superovulated bufallo corpus luteum
Biotechniques can be an effective way of improving reproduction efficiency and enhancing the production of genetically superior animals. The superovulatory treatment is a common technique aiming to spread desired genetical material, although its use in buffalos still presents limitations, mainly the low embryo recovery rate. The corpus luteum (CL) is a tempo
Publicado em: 2008
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8. Estudo da expressão dos receptores do peptídeo insulinotrópico dependente de glicose (GIPR) e do hormônio luteinizante (LHCGR) em tumores e hiperplasias do córtex adrenal / Expression Study of Glucose-dependent insulinotropic peptide receptor (GIPR) and luteinizing hormone receptor (LHCGR) in adrenocortical tumors and hyperplasia
Introduction: The glucose- dependent insulinotropic peptide receptor (GIPR) and luteinizing hormone receptor (LHCGR) are G-protein coupled receptors with a wide tissue expression pattern. The aberrant expression of these receptors has been described in cases of ACTH-independent macronodular adrenal hyperplasia (AIMAH) and in some adenomas, resulting in the i
Publicado em: 2007
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9. Caracterização da expressão e função de receptores recombinantes do hormônio folículo-estimulante. / Characterization of expression and function of recombinant follicle-stimulating receptors.
The follicle stimulating hormone receptor (FSHR) is a member of a family of Gprotein-coupled receptors that has a large aminoterminal domain, rich in leucine repeats. The FSHR, together with the luteinizing hormone receptor, controls gonadal function in vertebrates. Mutations in the FSHR can alter its binding and signaling properties, and drastically affect
Publicado em: 2006
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10. Clinical and molecular analysis of human reproductive disorders in Brazilian patients
Several genes that influence the development and function of the hypothalamic-pituitary-gonadal-axis (HPG) have been identified. These genes encode an array of transcription factors, matrix proteins, hormones, receptors, and enzymes that are expressed at multiple levels of the HPG. We report the experience of a single Endocrinology Unit in the identification
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-01
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11. Luteinizing Hormone Receptors: Specific Binding of Human Luteinizing Hormone to Homogenates of Luteinized Rat Ovaries
Binding of human [125I]luteinizing hormone to homogenates of luteinized rat ovaries is dependent upon time, temperature, and pH and is saturable. Injection of human chorionic gonadotropin in vivo or addition of unlabeled human chorionic gonadotropin or human or ovine luteinizing hormone in vitro inhibits binding, whereas follicle stimulating hormone or prola
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12. Similar luteinizing hormone-releasing hormone binding sites in rat anterior pituitary and ovary.
To study the luteinizing hormone-releasing hormone (LH-RH; luliberin) receptors in the rat anterior pituitary gland and ovary, 125I-labeled [D-Ser(TBU)6des-Gly-NH2(10)]LH-RH ethylamide was used as a labeled ligand. The binding characteristics were assessed by Scatchard analysis of labeled ligand binding and by potency displacement with unlabeled peptides. Si