Cyclosporin A blocks muscle differentiation by inducing oxidative stress and inhibiting the peptidyl-prolyl-cis-trans isomerase activity of cyclophilin A: cyclophilin A protects myoblasts from cyclosporin A-induced cytotoxicity.

Abstract excerpt

Allogenic myoblast transplantation (AMT) is under investigation for treatment of severe genetic myopathies. Data regarding the role of cyclosporine (CsA) and FK-506 in AMT have shown that CsA is less effective than FK-506. For this study, we investigated mechanisms of CsA toxicity during AMT and showed that a high level of reactive oxygen species (ROS) generated by CsA, mediated partly by inhibition of the...

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