Exosomes obtained from adipose mesenchymal stem cells prevent ischemia-reperfusion injury after torsion-detorsion in rat testes
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PurposeTo investigate the effect of exosomes obtained from adipose-derived mesenchymal stem cells (AD-MSCs) on testicular ischemia-reperfusion (I/R) injury.MethodsAD-MSCs from rat adipose tissue were cultured. Characterization of cells was evaluated with CD44, CD90, CD34 and CD45 antibodies. Exosomes from AD-MSCs were obtained with the miRCURY exosome isolation kit. 21 rats were divided into 3 groups. The I/R model was created as 720 degrees torsion for 4 h and reperfusion for 4 h. In the Sham group (SG), only scrotal incision was made. 100 mu l of medium in the torsion-control group (T-CG) and 100 mu l of exosome in the treatment group (TG) were injected into the testicular parenchyma after detorsion. Johnsen scores of testicles were determined. Apoptosis was evaluated by the TUNEL method.ResultsIt was observed that the seminiferous tubule structures were partially disrupted in T-CG, but normal in SG and TG. Johnsen scores in SG, T-CG, and TG were 8.64 +/- 0.39, 7.71 +/- 0.37, and 8.57 +/- 0.39, respectively. Apoptotic cell distribution was 11.28 +/- 5.25%, 60.58% +/- 1.68% and 17.71 +/- 8.34% in SG, T-CG and TG, respectively. In both parameters, the difference between SG and TG was insignificant (p > 0.05), the difference between T-CG/TG and SG/T-CG was significant (p < 0.05).ConclusionExosomes obtained from AD-MSCs are effective in preventing testicular I/R injury. This effect appears to occur because of suppression of apoptotic activity.