Document Detail

Sirolimus as primary immunosuppression is associated with improved coronary vasomotor function compared with calcineurin inhibitors in stable cardiac transplant recipients.
MedLine Citation:
PMID:  19383734     Owner:  NLM     Status:  MEDLINE    
AIMS: The aim of this study was to evaluate coronary vasomotor function in cardiac transplant recipients maintained on sirolimus (SRL)- or cyclosporin (CyA)-based immunosuppression. METHODS AND RESULTS: Endothelium-independent response to intracoronary nitroglycerin and adenosine and endothelium-dependent response to intracoronary acetylcholine (Ach) were assessed in 15 SRL- and 21 CyA- treated subjects with angiographically normal coronary arteries. Baseline mean blood pressure was lower in the SRL group (85.6 +/- 10.3 vs. 105.2 +/- 8.7 mmHg, P = 0.002). There was no difference between the groups in coronary flow reserve after adenosine administration in multivariable analysis (P = 0.34). Nitroglycerin administration resulted in increase in coronary artery diameter in the SRL compared with the CyA groups (2.79 +/- 0.54 vs. 2.57 +/- 0.61, P = 0.0036). In 13 SRL-treated subjects without evidence of cardiac allograft vasculopathy (CAV), Ach administration resulted in less epicardial vasoconstriction compared with CyA-treated subjects (2.7 +/- 17.7 vs. -15.6 +/- 17.2%, P = 0.005). Two SRL-treated subjects with three-dimensional intravascular ultrasound evidence of CAV developed coronary spasm in response to Ach 10(-4). Microvascular endothelial function did not differ between the groups. CONCLUSION: Sirolimus immunosuppression is associated with less pronounced coronary epicardial endothelial dysfunction compared with CyA immunosuppression. Improvement of coronary vasomotor function with SRL may be an important mechanism for the prevention of CAV.
Eugenia Raichlin; Abhiram Prasad; Walter K Kremers; Brooks S Edwards; Charanjit S Rihal; Amir Lerman; Sudhir S Kushwaha
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-04-21
Journal Detail:
Title:  European heart journal     Volume:  30     ISSN:  1522-9645     ISO Abbreviation:  Eur. Heart J.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-02     Completed Date:  2009-07-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  England    
Other Details:
Languages:  eng     Pagination:  1356-63     Citation Subset:  IM    
William J. von Liebig Transplant Center and the Division of Cardiovascular Diseases, Mayo Clinic (Go 5-469), 200 First Street, SW, Rochester, MN 55905, USA.
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MeSH Terms
Calcineurin / therapeutic use*
Coronary Circulation / drug effects
Endothelium, Vascular / drug effects*,  physiopathology
Graft Rejection / prevention & control
Heart Transplantation*
Immunosuppressive Agents / therapeutic use*
Middle Aged
Sirolimus / therapeutic use*
Vasomotor System / drug effects*,  physiology
Reg. No./Substance:
0/CABIN1 protein, human; 0/Immunosuppressive Agents; 53123-88-9/Sirolimus; EC

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