Background: Severe burn induces systemic inflammation and reactive oxygen species leading to lipid peroxidation which may play role in remote organs injury. Sildenafil is a selective and potent inhibitor of cyclic guanosine monophosphate specific phosphodiesterase-5. Sildenafil reduces oxidative stress and inflammation in distant organs. The aim of the present study was to evaluate the effects of different dosages of sildenafil in remote organs injury.
Methods: A total of thirty-two rats were randomly divided into four equal groups. The groups were designated as follows: Sham, Control, 10, and T20 mg/kg sildenafil treatment groups. Levels of malondialdehyde (MDA), vascular endothelial growth factor (VEGF), VEGF receptor (Flt-1), activities of glutathione peroxidase (Gpx), levels of total antioxidative capacity (TAC), and total oxidant status (TOS) were measured in both tissues and serum, and a semi-quantitative scoring system was used for the evaluation of histopathological findings.
Results: Sildenafil increased levels of Gpx, and Flt-1, and decreased MDA and VEGF levels in tissues. Sildenafil also increased serum levels of TAC and Flt-1 and decreased TOS, OSI, and VEGF.
Conclusion: Sildenafil decreased inflammation scores in remote organs in histopathological evaluation. It has protective effects in severe burn-related remote organ injuries by decreasing oxidative stress and inflammation.
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| http://dx.doi.org/10.5505/tjtes.2014.39586 | DOI Listing |
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