Cyclic AMP-phosphodiesterases inhibitor improves sodium excretion in rats with cirrhosis and ascites
| Autor: | Claire Lugnier, M. Ahloulay, Alain Le Bec, Richard Moreau, Odile Poirel, Didier Lebrec, Lise Bankir |
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| Přispěvatelé: | Institut Gilbert-Laustriat : Biomolécules, Biotechnologie, Innovation Thérapeutique, Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Klotz, Evelyne |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Male
medicine.medical_specialty Cirrhosis Phosphodiesterase Inhibitors Renal cortex Renal function Nephron Kidney Function Tests Liver Cirrhosis Experimental Sensitivity and Specificity Rats Sprague-Dawley Random Allocation Reference Values Internal medicine Ascites Cyclic AMP Medicine Animals Infusions Intravenous Rolipram Probability Analysis of Variance Hepatology Renal sodium reabsorption business.industry Phosphodiesterase medicine.disease Rats Disease Models Animal medicine.anatomical_structure Endocrinology medicine.symptom business medicine.drug Glomerular Filtration Rate |
| Zdroj: | Liver International Liver International, Wiley-Blackwell, 2005, 25, pp.403-409 |
| ISSN: | 1478-3223 1478-3231 |
| Popis: | Background: The mechanisms responsible for renal dysfunction and sodium retention in cirrhosis remain unclear. Cyclic AMP (cAMP) regulates sodium reabsorption in the proximal nephron. This study investigates the role of cAMP metabolism in renal dysfunction in cirrhosis. Methods: Renal function was studied by the clearance technique in anesthetized control and cirrhotic rats with or without ascites. cAMP phosphodiesterase (PDE) activity was measured in the renal cortex in vitro. Moroever, the effects on renal function of the intravenous administration of cAMP and rolipram, a powerful and specific cAMP-PDE4 inhibitor, were evaluated. Results: In control and in non-ascitic cirrhotic rats, cAMP administration significantly increased sodium and phosphate excretions, but did not change these excretions in cirrhotic rats with ascites. cAMP-PDE activity was higher in ascitic than in control rats (Po0.05). Rolipram infusion significantly increased sodium and phosphate excretion only in cirrhotic rats with ascites. Conclusion: These results suggest that increased renal cAMP- PDE activity is responsible for resistance to the natriuretic effects of cAMP in cirrhosis and plays a role in the development of ascites. |
| Databáze: | OpenAIRE |
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