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From: ironjustice on 19 Aug 2007 12:05 MORE .. chemical .. bloodletting. Transplantation Proceedings Volume 37, Issue 3, April 2005, Pages 1586-1588 doi:10.1016/j.transproceed.2004.09.014 Copyright © 2005 Elsevier Inc. All rights reserved. Valsartan-Induced Hematocrit Changes in Renal Transplant Patients C.A. Flores, , L.G. Ardiles, C.A. Aros, C.C. Muñoz, H.O. Schneider, J.A. RamıÌrez, V. Jerez, M.G. Valderrama and S.A. Mezzano Unidad de NefrologıÌa; Hospital Regional de Valdivia, Valdivia, Chile Available online 29 April 2005. Abstract Background Angiotensin-converting enzyme (ACE) inhibitors and angiotensin II receptor type 1 blockers (ARB) are frequently prescribed for renal transplant patients. The main reasons for their use are that their antihypertensive and antifibrogenic effects may prevent chronic renal allograft dysfunction, potentially improving transplant survival. Furthermore, ACE and ARB have been used to reduce the hematocrit in patients with posttransplant erythrocytosis. We evaluated the effects of the ARB valsartan on the evolution of hematocrit in stable renal transplant patients treated with cyclosporine (CsA), azathioprine (Aza), and prednisone. Patients and methods Twenty-six stable renal transplant patients treated with valsartan 80 mg/d orally were followed for 6 months. Evaluations were performed prior to as well as at 3 and 6 months following the initiation of valsartan. Results The hematocrit levels decreased significantly at 3 months (46.1 ± 7.3 vs 39.9 ± 5.8 ; P < .0001) in patients with a normal hematocrit, namely a level over 38%, with no further reduction at 6 months. In recipients with an hematocrit less than 38%, there was no significant reduction, either at 3 or 6 months follow-up. Valsartan was well tolerated without significant side effects. Conclusion We postulate that inhibition of the proerythropoietic effects of angiotensin II and/or the reduction in hypoxia within the renal tubulointerstitium as well as the vasodilator effects on the efferent arterioles, represent possible mechanisms for the reduction and stabilization of the hematocrit in stable renal transplant patients. This study was supported by grants DID-UACH S-200275 and Fondecyt (Chile) 1040163 and 1030263 Address reprint requests to Claudio Flores, MD; Unidad de NefrologıÌa, Hospital Regional de Valdivia, Bueras 1003, Valdivia, Chile Transplantation Proceedings Volume 37, Issue 3, April 2005, Pages 1586-1588 Who loves ya. Tom Jesus Was A Vegetarian! http://jesuswasavegetarian.7h.com Man Is A Herbivore! http://tinyurl.com/a3cc3 DEAD PEOPLE WALKING http://tinyurl.com/zk9fk
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