alexa Protective effects of sildenafil administration on testicular torsion detorsion damage in rats.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): Beheshtian A, Salmasi AH, Payabvash S, Kiumehr S, Ghazinezami B,

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Abstract PURPOSE: We assessed the effectiveness of sildenafil administration during ischemic period in a rat model of testicular torsion/detorsion (T/D). MATERIAL AND METHODS: Sprague-Dawley rats were divided into four groups (n = 10). In those animals that underwent T/D, right testes were rotated 720 degrees for 1 h. Base line group was for basal normal values. Sham operated group was served as a control group. T/D group underwent 1 h testicular torsion. Sildenafil group received sildenafil (0.7 mg/kg) intraperitoneally 30 min after initiation of ischemic period. For measurement of lipid peroxidation and antioxidant enzyme activities, right testes of five animals in each group were excised after 4-h reperfusion. Germ cell apoptosis indices were determined 24 h following detorsion in right testes of remaining five animals in each group. RESULTS: Malondialdehyde (MDA) levels in T/D group were significantly higher versus control and base line groups. Moreover, testicular MDA values in sildenafil group were significantly lower than T/D. There were also significant decreases in catalase and superxide dismutase activities in T/D group compared with control and base line groups. These values were significantly higher in sildenafil group versus T/D. Germ cell apoptosis indices were significantly higher in both groups that experienced T/D in comparison to control and base line groups; however, sildenafil treatment significantly reduced the apoptosis in sildenafil group compared with T/D group. CONCLUSION: Sildenafil administration during testicular torsion decreased ischemia/reperfusion cellular damage. The results of biochemical studies suggest that, reduction of oxidative stress by sildenafil may have a major role in its cytoprotective effects. This article was published in World J Urol and referenced in Journal of Cytology & Histology

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