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Schindler C, Guenther K, Hermann C, Ferrario CM, Schroeder C, Haufe S, Jordan J, Kirch W. Statin treatment in hypercholesterolemic men does not attenuate angiotensin II-induced venoconstriction. PLoS One 2014; 9:e103909. [PMID: 25264877 PMCID: PMC4179232 DOI: 10.1371/journal.pone.0103909] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 07/04/2014] [Indexed: 01/10/2023] Open
Abstract
UNLABELLED Experimental studies suggested that statins attenuate vascular AT1 receptor responsiveness. Moreover, the augmented excessive pressor response to systemic angiotensin II infusions in hypercholesterolemic patients was normalized with statin treatment. In 12 hypercholesterolemic patients, we tested the hypothesis that statin treatment attenuates angiotensin II-mediated vasoconstriction in hand veins assessed by a linear variable differential transducer. Subjects ingested daily doses of either atorvastatin (40 mg) or positive control irbesartan (150 mg) for 30 days in a randomized and cross-over fashion. Ang II-induced venoconstriction at minute 4 averaged 59%±10% before and 28%±9% after irbesartan (mean ± SEM; P<0.05) compared to 65%±11% before and 73%±11% after 30 days of atorvastatin treatment. Plasma angiotensin levels increased significantly after irbesartan treatment (Ang II: 17±22 before vs 52±40 pg/mL after [p = 0.048]; Ang-(1-7): 18±10 before vs 37±14 pg/mL after [p = 0.002]) compared to atorvastatin treatment (Ang II: 9±4 vs 11±10 pg/mL [p = 0.40]; Ang-(1-7): 24±9 vs 32±8 pg/mL [p = 0.023]). Our study suggests that statin treatment does not elicit major changes in angiotensin II-mediated venoconstriction or in circulating angiotensin II levels whereas angiotensin-(1-7) levels increased modestly. The discrepancy between local vascular and systemic angiotensin II responses might suggest that statin treatment interferes with blood pressure buffering reflexes. TRIAL REGISTRATION ClinicalTrials.gov NCT00154024.
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Affiliation(s)
- Christoph Schindler
- Clinical Research Center Hannover & Institute of Clinical Pharmacology, Hannover Medical School, Hannover, Germany; Institute of Clinical Pharmacology, Medical Faculty, Technical University Dresden, Dresden, Germany
| | - Kristina Guenther
- Institute of Clinical Pharmacology, Medical Faculty, Technical University Dresden, Dresden, Germany
| | - Cosima Hermann
- Institute of Clinical Pharmacology, Medical Faculty, Technical University Dresden, Dresden, Germany
| | - Carlos M Ferrario
- Departments of Surgery, Internal Medicine - Nephrology, Physiology-Pharmacology; Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Christoph Schroeder
- Clinical Research Center Hannover & Institute of Clinical Pharmacology, Hannover Medical School, Hannover, Germany
| | - Sven Haufe
- Clinical Research Center Hannover & Institute of Clinical Pharmacology, Hannover Medical School, Hannover, Germany
| | - Jens Jordan
- Clinical Research Center Hannover & Institute of Clinical Pharmacology, Hannover Medical School, Hannover, Germany
| | - Wilhelm Kirch
- Institute of Clinical Pharmacology, Medical Faculty, Technical University Dresden, Dresden, Germany
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