TY - JOUR
T1 - Effect of morphine on ischemia-reperfusion injury
T2 - Experimental study in testicular torsion rat model
AU - Salmasi, Amirali Hassanzadeh
AU - Beheshtian, Azadeh
AU - Payabvash, Seyedmehdi
AU - Demehri, Shadpour
AU - Ebrahimkhani, Mohammad Reza
AU - Karimzadegan, Motahare
AU - Bahadori, Moslem
AU - Pasalar, Parvin
AU - Dehpour, Ahmad Reza
PY - 2005/12
Y1 - 2005/12
N2 - Objectives. To investigate the effects of morphine on reperfusion injury due to testicular torsion-detorsion (T/D). Methods. We divided 36 adult male Sprague-Dawley rats into six groups. Testicular ischemia was achieved by twisting the right testis 720° counterclockwise for 1 hour, and reperfusion was allowed for 4 hours after detorsion. The baseline group was for basal normal values. The sham-operated group served as the control group. The T/D group underwent 1 hour of testicular torsion and 4 hours of detorsion. The morphine group received pretreatment with intravenous morphine sulfate (10 mg/kg) just before detorsion. The naltrexone group received an intravenous injection of naltrexone HCl (20 mg/kg) 15 minutes before detorsion. The naltrexone/morphine group received intravenous administration of naltrexone HCl (20 mg/kg) 15 minutes before detorsion and morphine sulfate (10 mg/kg) just before detorsion. Results. The ipsilateral malondialdehyde levels in the T/D group were significantly greater than in the control and baseline groups. Moreover, the ipsilateral testicular malondialdehyde values in the morphine group were significantly lower than in the T/D and naltrexone/morphine groups. Also, significant decreases occurred in catalase and superoxide dismutase activities in the T/D group compared with the control and baseline groups. These values were significantly greater in the morphine group than in the T/D and naltrexone/morphine groups. The ipsilateral testes of all groups that underwent testicular torsion showed similar histopathologic changes. Conclusions. Morphine increased the ipsilateral intratesticular antioxidant markers during the reperfusion phase after unilateral testicular torsion, which was eventually reflected in lower testicular malondialdehyde levels. Furthermore, this effect was mediated through the opioid receptors.
AB - Objectives. To investigate the effects of morphine on reperfusion injury due to testicular torsion-detorsion (T/D). Methods. We divided 36 adult male Sprague-Dawley rats into six groups. Testicular ischemia was achieved by twisting the right testis 720° counterclockwise for 1 hour, and reperfusion was allowed for 4 hours after detorsion. The baseline group was for basal normal values. The sham-operated group served as the control group. The T/D group underwent 1 hour of testicular torsion and 4 hours of detorsion. The morphine group received pretreatment with intravenous morphine sulfate (10 mg/kg) just before detorsion. The naltrexone group received an intravenous injection of naltrexone HCl (20 mg/kg) 15 minutes before detorsion. The naltrexone/morphine group received intravenous administration of naltrexone HCl (20 mg/kg) 15 minutes before detorsion and morphine sulfate (10 mg/kg) just before detorsion. Results. The ipsilateral malondialdehyde levels in the T/D group were significantly greater than in the control and baseline groups. Moreover, the ipsilateral testicular malondialdehyde values in the morphine group were significantly lower than in the T/D and naltrexone/morphine groups. Also, significant decreases occurred in catalase and superoxide dismutase activities in the T/D group compared with the control and baseline groups. These values were significantly greater in the morphine group than in the T/D and naltrexone/morphine groups. The ipsilateral testes of all groups that underwent testicular torsion showed similar histopathologic changes. Conclusions. Morphine increased the ipsilateral intratesticular antioxidant markers during the reperfusion phase after unilateral testicular torsion, which was eventually reflected in lower testicular malondialdehyde levels. Furthermore, this effect was mediated through the opioid receptors.
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U2 - 10.1016/j.urology.2005.06.101
DO - 10.1016/j.urology.2005.06.101
M3 - Article
C2 - 16360480
AN - SCOPUS:29144450957
SN - 0090-4295
VL - 66
SP - 1338
EP - 1342
JO - Urology
JF - Urology
IS - 6
ER -