Vasopressin Receptors
Mostrando 1-12 de 124 artigos, teses e dissertações.
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1. Oxytocin and arginine vasopressin receptor evolution: implications for adaptive novelties in placental mammals
Abstract Oxytocin receptor (OXTR) and arginine vasopressin receptors (AVPR1a, AVPR1b, and AVPR2) are paralogous genes that emerged through duplication events; along the evolutionary timeline, owing to speciation, numerous orthologues emerged as well. In order to elucidate the evolutionary forces that shaped these four genes in placental mammals and to reveal
Genet. Mol. Biol.. Publicado em: 08/08/2016
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2. Cardiovascular effects of the intracerebroventricular injection of adrenomedullin: roles of the peripheral vasopressin and central cholinergic systems
Our objective was to investigate in conscious Sprague-Dawley (6-8 weeks, 250-300 g) female rats (N = 7 in each group) the effects of intracerebroventricularly (icv) injected adrenomedullin (ADM) on blood pressure and heart rate (HR), and to determine if ADM and calcitonin gene-related peptide (CGRP) receptors, peripheral V1 receptors or the central cholinerg
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-03
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3. Nephrogenic diabetes insipidus (NDI): clinical, laboratory and genetic characterization of five Brazilian patients
INTRODUCTION: Nephrogenic diabetes insipidus is characterized by a lack of response in the distal nephron to the antidiuretic hormone arginine vasopressin. Manifestations include polyuria, polydipsia, hyposthenuria, recurrent episodes of dehydration and fever and growth failure. Most cases are caused by mutations in the AVPR2 gene. The mutant receptors are t
Clinics. Publicado em: 2009-05
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4. Participação da área septal medial nas respostas sialogoga, dipsogênica e cardiovascular induzidas pela pilocarpina
Peripheral injection of pilocarpine (PILO, 1 mg/Kg of body weight), muscarinic cholinergic agonist, induce salivation, water intake and pressor response. The medial septal area (MSA) is an important brain area involved in cardiovascular regulation and hydroelectrolytic control. In this present study, we investigated: 1) the effect of MSA electrolytic lesion
Publicado em: 2008
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5. Importância da região AV3V e de mecanismos colinérgicos e angiotensinérgicos centrais para os efeitos cardiovasculares produzidos pela ativação da área rostroventrolateral do bulbo
Cardiovascular responses are integrated at different levels of the central nervous system (CNS). In the brainstem, there are different areas related to the cardiovascular control such as the rostral ventrolateral medulla (RVLM) that activates sympathetic pre-ganglionic neurons in the spinal cord (IML) inducing pressor response. Like glutamatergic activation,
Publicado em: 2008
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6. Study of mRNA expression of the receptors for vasopressin (AVPR1B), corticotropin releasing hormone (CRHR1) and GH secretagogues (GHSR-1a) in patients with ACTH-dependent Cushings syndrome: clinical-molecular correlation / Estudo da expressão do receptor da vasopressina (AVPR1B), do receptor do hormônio liberador de corticotrofina (CRHR1) e do receptor dos secretagogos de GH (GHSR-1a) em pacientes portadores de síndrome de Cushing ACTH-dependente: correlação clínico-molecular
INTRODUCTION: The differential diagnosis of ACTH-dependent Cushings syndrome (CS) is one of the major challenges in endocrinology, especially in view of the similar clinical and laboratorial behavior between some carcinoid tumors and Cushings disease (CD). Hence, dynamic tests of ACTH and cortisol release have been carried out with the aim to identify predic
Publicado em: 2006
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7. Effect of arginine vasopressin on the canine epicardial coronary artery: experiments on V1-receptor-mediated production of nitric oxide
OBJECTIVE: To determine whether arginine vasopressin releases endothelium-derived nitric oxide (EDNO) from the epicardial coronary artery. METHODS: We studied segments of canine left circumflex coronary arteries suspended in organ chambers to measure isometric force. The coronary artery segments were contracted with prostaglandin F2alpha (2 x 10-6M) and expo
Arquivos Brasileiros de Cardiologia. Publicado em: 2003-05
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8. Avaliação dos efeitos da vasopressina exogena sobre a pressão intra-ocular de coelhos
Purpose. To compare the central, peripheral and local effects of exogenous arginine vasopressin on intra-ocular pressure (IOP) in rabbits and to identify the receptor mechanisms associated with these effects. Methods. Young adult New Zealand albino rabbits were housed under a daily 12-hour light and 12-hour dark cyc1e. In the early light period, bolus inject
Publicado em: 2001
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9. Role of the hypothalamic pituitary adrenal axis in the control of the response to stress and infection
The release of adrenocorticotropin (ACTH) from the corticotrophs is controlled principally by vasopressin and corticotropin-releasing hormone (CRH). Oxytocin may augment the release of ACTH under certain conditions, whereas atrial natriuretic peptide acts as a corticotropin release-inhibiting factor to inhibit ACTH release by direct action on the pituitary.
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-10
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10. The diversity of abnormal hormone receptors in adrenal Cushing's syndrome allows novel pharmacological therapies
Recent studies from several groups have indicated that abnormal or ectopic expression and function of adrenal receptors for various hormones may regulate cortisol production in ACTH-independent hypercortisolism. Gastric inhibitory polypeptide (GIP)-dependent Cushing's syndrome has been described in patients with either unilateral adenoma or bilateral macrono
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-10
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11. The physiological role of AT1 receptors in the ventrolateral medulla
Neurons in the rostral and caudal parts of the ventrolateral medulla (VLM) play a pivotal role in the regulation of sympathetic vasomotor activity and blood pressure. Studies in several species, including humans, have shown that these regions contain a high density of AT1 receptors specifically associated with neurons that regulate the sympathetic vasomotor
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-06
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12. Estudo do efeito da dobutamina (Dobutrex) R e da radiação laser sobre a ação hidrosmotica da vasopressina em bexiga de sapo "in vitro"
In the present work the effects of several pharmacological agents in special Dobutamine and a physical agent-Laser radiation - on the events that follow the interaction of Vasopressin with membrane receptors related to syn¬thesis and inactivation of cyclic-AMP in the toad bladder, are described and characterized. Water flow across the membrane was measured
Publicado em: 1991