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Effects of alcohol consumption on copeptin levels and sodium-water homeostasis

Effects of alcohol consumption on copeptin levels and sodium-water homeostasis Alcohol consumption influences sodium-water homeostasis. However, the effect of alcohol on vasopressin levels is controversial. The aim of the present study was to evaluate physiological changes of alcohol consumption on the stable vasopressin surrogate marker copeptin. In addition, we aimed at investigating the effect of additional sodium and/or water consumption on plasma sodium, osmolality, and copeptin levels. Ten healthy men underwent four interventions in random order: 1) beer consumption only, 2) beer consumption with additional water, 3) beer consumption with additional stock, or 4) water consumption only. Fluid consumption was equal between interventions and calculated to reach a blood alcohol concentration of 0.8‰ in the beer interventions. Blood and urinary samples were taken at six time points over the observation period of 720 min. The primary end point was the mean difference in copeptin levels 90 min after the start of fluid consumption, which showed no in-between group differences (P = 0.4). However, a higher total urinary volume excretion in all alcohol compared with water interventions was observed (P = 0.01). Furthermore, plasma copeptin, sodium, and urinary osmolality levels increased significantly at the end of the observation period in all alcohol compared with water-only interventions (P = 0.02). In conclusion, initial copeptin suppression does not differ between alcohol or water interventions but seems to be prolonged in the alcohol interventions. This leads to increased volume loss followed by a counterregulation with increased copeptin levels and water retention after 720 min in alcohol compared with interventions. Additional sodium and/or water consumption with alcohol did not change the observed alcohol-induced effects. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Physiology-Renal Physiology The American Physiological Society

Effects of alcohol consumption on copeptin levels and sodium-water homeostasis

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ISSN
1931-857x
eISSN
1522-1466
DOI
10.1152/ajprenal.00458.2019
Publisher site
See Article on Publisher Site

Abstract

Alcohol consumption influences sodium-water homeostasis. However, the effect of alcohol on vasopressin levels is controversial. The aim of the present study was to evaluate physiological changes of alcohol consumption on the stable vasopressin surrogate marker copeptin. In addition, we aimed at investigating the effect of additional sodium and/or water consumption on plasma sodium, osmolality, and copeptin levels. Ten healthy men underwent four interventions in random order: 1) beer consumption only, 2) beer consumption with additional water, 3) beer consumption with additional stock, or 4) water consumption only. Fluid consumption was equal between interventions and calculated to reach a blood alcohol concentration of 0.8‰ in the beer interventions. Blood and urinary samples were taken at six time points over the observation period of 720 min. The primary end point was the mean difference in copeptin levels 90 min after the start of fluid consumption, which showed no in-between group differences (P = 0.4). However, a higher total urinary volume excretion in all alcohol compared with water interventions was observed (P = 0.01). Furthermore, plasma copeptin, sodium, and urinary osmolality levels increased significantly at the end of the observation period in all alcohol compared with water-only interventions (P = 0.02). In conclusion, initial copeptin suppression does not differ between alcohol or water interventions but seems to be prolonged in the alcohol interventions. This leads to increased volume loss followed by a counterregulation with increased copeptin levels and water retention after 720 min in alcohol compared with interventions. Additional sodium and/or water consumption with alcohol did not change the observed alcohol-induced effects.

Journal

American Journal of Physiology-Renal Physiology – The American Physiological Society

Published: Mar 1, 2020

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