Search

Your search keyword '"MESH: Arginine Vasopressin"' showing total 2 results
Start Over Descriptor "MESH: Arginine Vasopressin" Language undetermined
2 results on '"MESH: Arginine Vasopressin"'

1. Reciprocal Regulation of Plasma Apelin and Vasopressin by Osmotic Stimuli

Author

Xavier Iturrioz, Séverine Peyrard, Anne Blanchard, Nicolas Chartrel, Nadia De Mota, Hubert Vaudry, Catherine Llorens-Cortes, Pierre Corvol, Michel Azizi, Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), CIC AP-HP (hegp Ex-Broussais)/inserm, Institut National de la Santé et de la Recherche Médicale (INSERM), Neuropeptides centraux et régulations hydrique et cardiovasculaire, Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre interdisciplinaire de recherche en biologie (CIRB), Labex MemoLife, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Collège de France (CdF (institution))-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Labex MemoLife, Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Neuroendocrinologie cellulaire et moléculaire, Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Pathologie vasculaire et endocrinologie rénale - Chaire de médecine expérimentale (INSERM U36), Collège de France (CdF (institution))-Institut National de la Santé et de la Recherche Médicale (INSERM), Iturrioz, Xavier, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre interdisciplinaire de recherche en biologie (CIRB), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Labex MemoLife, Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Llorens Cortes, Catherine

Subjects
Male, Vasopressin, MESH: Renin, [SDV]Life Sciences [q-bio], MESH: Saline Solution, Hypertonic, MESH: Arginine Vasopressin, MESH: Body Fluids, Electrolytes, MESH: Osmolar Concentration, 0302 clinical medicine, MESH: Electrolytes, Renin, [CHIM] Chemical Sciences, Blood plasma, MESH: Blood Proteins, Homeostasis, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP.EM] Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, 0303 health sciences, Chemistry, Blood Proteins, General Medicine, Water-Electrolyte Balance, [SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, Body Fluids, Apelin, [SDV] Life Sciences [q-bio], Hematocrit, MESH: Homeostasis, Nephrology, Intercellular Signaling Peptides and Proteins, MESH: Drinking, hormones, hormone substitutes, and hormone antagonists, Adult, medicine.medical_specialty, Adolescent, Drinking, MESH: Hematocrit, 03 medical and health sciences, Clinical Research, Osmotic Pressure, Internal medicine, Renin–angiotensin system, medicine, Humans, [CHIM]Chemical Sciences, MESH: Intercellular Signaling Peptides and Proteins, 030304 developmental biology, Saline Solution, Hypertonic, MESH: Adolescent, MESH: Humans, Osmolar Concentration, MESH: Adult, MESH: Osmotic Pressure, MESH: Male, Hypertonic saline, Arginine Vasopressin, Plasma osmolality, Endocrinology, nervous system, MESH: Water-Electrolyte Balance, Magnocellular cell, 030217 neurology & neurosurgery
Abstract

International audience; Apelin is a neuropeptide that co-localizes with vasopressin (AVP) in magnocellular neurons and is involved in body fluid homeostasis. Osmotic stimuli have opposite effects on the regulation of apelin and AVP secretion in animal models, but whether this is true in humans is unknown. This study investigated the relationship among osmolality, apelin, and AVP in 10 healthy men after infusion of hypertonic saline or loading with water to increase and decrease plasma osmolality, respectively. Increasing plasma osmolality was accompanied by a parallel, linear increase in plasma AVP concentration and by a decrease in plasma apelin concentration. In contrast, decreasing plasma osmolality by water loading reduced plasma AVP concentration and rapidly increased plasma apelin concentration. These findings suggest that regulation of apelin secretion contributes to the maintenance of body fluid homeostasis.

Published
2008
Full Text
View/download PDF

2. Ultrastructural plasticity in the rat suprachiasmatic nucleus. Possible involvement in clock entrainment

Author

Olivier Bosler, Fabienne Guillaumond, Denis Becquet, Clémence Girardet, Anne-Marie François-Bellan, Interactions cellulaires neuroendocriniennes (ICN), Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS), Centre de recherche en neurobiologie - neurophysiologie de Marseille (CRN2M), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Moléculaire (UMR 6624) (LPM), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, Vasoactive intestinal peptide, MESH: Neurons, MESH: Rats, Sprague-Dawley, MESH: Arginine Vasopressin, Rats, Sprague-Dawley, 0302 clinical medicine, Axon terminal, MESH: Glial Fibrillary Acidic Protein, MESH: Animals, MESH: Neuronal Plasticity, Axon, Neurons, 0303 health sciences, Neuronal Plasticity, Glial fibrillary acidic protein, Suprachiasmatic nucleus, MESH: Vasoactive Intestinal Peptide, MESH: Gene Expression Regulation, Circadian Rhythm, medicine.anatomical_structure, Neurology, Hypothalamus, MESH: Microscopy, Electron, Transmission, Suprachiasmatic Nucleus, MESH: Neuroglia, Neuroglia, hormones, hormone substitutes, and hormone antagonists, Vasoactive Intestinal Peptide, medicine.medical_specialty, MESH: Rats, MESH: Suprachiasmatic Nucleus, Biology, MESH: Dendrites, 03 medical and health sciences, Cellular and Molecular Neuroscience, Microscopy, Electron, Transmission, MESH: Analysis of Variance, Internal medicine, Glial Fibrillary Acidic Protein, medicine, Animals, MESH: Circadian Rhythm, Circadian rhythm, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], 030304 developmental biology, Analysis of Variance, Dendrites, MESH: Male, Rats, Arginine Vasopressin, Endocrinology, Gene Expression Regulation, nervous system, Light effects on circadian rhythm, biology.protein, sense organs, 030217 neurology & neurosurgery
Abstract

International audience; Circadian rhythms in mammals are synchronized to the light (L)/dark (D) cycle through messages relaying in the master clock, the suprachiasmatic nucleus of the hypothalamus (SCN). Here, we provide evidence that the SCN undergoes rhythmic ultrastructural rearrangements over the 24-h cycle characterized by day/night changes of the glial, axon terminal, and/or somato-dendritic coverage of neurons expressing arginine vasopressin (AVP) or vasoactive intestinal peptide (VIP), the two main sources of SCN efferents. At nighttime, we noted an increase in the glial coverage of the dendrites of the VIP neurons (+29%) that was concomitant with a decrease in the mean coverage of the somata (-36%) and dendrites (-43%) of these neurons by axon terminals. Conversely, glial coverage of the dendrites of AVP neurons decreased (-19%) with parallel increase in the extent of somatal (+96%) and dendritic (+52%) membrane appositions involving these neurons. These plastic events were concomitant with daily fluctuations in quantitative expression of glial fibrillary acidic protein (GFAP), which were then used as an index of structural plasticity. The GFAP rhythm appeared to be strictly dependent on light entrainment, indicating that structural reorganization of the SCN may subserve synchronization of the clock to the L/D cycle. Other results presented reinforced this view while showing that circulating glucocorticoid hormones, which are known to modulate photic entrainment, were required to maintain amplitude of the GFAP rhythm to normal values.

Published
2007
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results