Addition of Vardenafil into Storage Solution Protects the Endothelium in a Hypoxia-Reoxygenation Model

Objective Based upon the well known protective effect of intracellular cyclic guanosine monophosphate (cGMP) accumulation, we tested the hypothesis that storage solution enriched with optimal concentration of the phosphodiestherase-5 inhibitor vardenafil could provide better protection of vascular g...

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Published in:European journal of vascular and endovascular surgery 2013-08, Vol.46 (2), p.242-248
Main Authors: Veres, G, Hegedűs, P, Barnucz, E, Zöller, R, Radovits, T, Korkmaz, S, Kolonics, F, Weymann, A, Karck, M, Szabó, G
Format: Article
Language:eng
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Summary:Objective Based upon the well known protective effect of intracellular cyclic guanosine monophosphate (cGMP) accumulation, we tested the hypothesis that storage solution enriched with optimal concentration of the phosphodiestherase-5 inhibitor vardenafil could provide better protection of vascular grafts against reperfusion injury after long-term cold ischaemic storage. Methods Isolated thoracic aorta obtained from rats underwent 24-h cold ischaemic preservation in physiological saline or vardenafil (10−11  M)-supplemented saline solution. Reperfusion injury was simulated by hypochlorite (200 μM) exposure for 30 minutes. Endothelium-dependent vasorelaxation was assessed, and histopathological and molecular–biological examination of the aortic tissue were performed. Results Compared with the control group, the saline group showed significantly attenuated endothelium-dependent maximal relaxation ( Rmax ) to acetylcholine after hypoxia-reoxygenation, which was significantly improved by vardenafil supplementation ( Rmax control: 98 ± 1%; saline: 48 ± 6%; vardenafil: 75 ± 4%; p  
ISSN:1078-5884
1532-2165