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Comparative effects of sirolimus and cyclosporin on conduit arteries endothelial function in kidney recipients.

Authors:
Robinson Joannides Isabelle Etienne Michele Iacob Bruno Hurault de Ligny Stephane Barbier Jeremy Bellien Yvon Lebranchu Christian Thuillez Michel Godin

Transpl Int 2010 Nov;23(11):1135-43

Department of Pharmacology, Rouen University Hospital & INSERM U644, Institute for Biomedical Research, University of Rouen, Rouen, France.

This study attempted to establish whether a calcineurin inhibitor (CNI)-free immunosuppressant regimen based on sirolimus (SRL) is associated with a preservation of conduit arteries endothelial function in kidney recipients or not. Twenty-nine kidney recipients were randomized to receive since transplantation SRL (n=15) or cyclosporin A (CsA, n=14) associated with mycophenolate mofetil (MMF) and steroids (6months) in a parallel prospective study. Systolic, diastolic blood pressures, glomerular filtration rate (GFR) and radial artery flow-mediated dilatation (FMD) induced by postischaemic hyperaemia were assessed in a blind manner at one (M1) and 7months (M7) after transplantation. Endothelium-independent dilatation was assessed by glyceryl trinitrate spray. There was no difference between the groups for all vascular parameters at M1. At M7, systolic blood pressure was lower (SRL: 119±3 vs. CsA: 138±4mmHg, P<0.05) and FMD was higher in SRL compared with CsA (SRL: 13.1±0.9 vs. CsA: 9.9±0.9%, P<0.05) without any difference for hyperaemia, endothelium-independent dilatation and GFR (SRL: 66.7±1.05 vs. CsA: 67.5±1.22ml/min). Our results demonstrate that a CNI-free regimen based on SRL and MMF prevents conduit artery endothelial dysfunction compared with CsA and MMF in kidney recipients suggesting a beneficial arterial wall effect that may also contribute to the decrease in systolic blood pressure.

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http://dx.doi.org/10.1111/j.1432-2277.2010.01122.xDOI Listing
November 2010

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