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  • Title: Comparative effects of sirolimus and cyclosporin on conduit arteries endothelial function in kidney recipients.
    Author: Joannides R, Etienne I, Iacob M, Hurault de Ligny B, Barbier S, Bellien J, Lebranchu Y, Thuillez C, Godin M.
    Journal: Transpl Int; 2010 Nov; 23(11):1135-43. PubMed ID: 20536790.
    Abstract:
    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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