Survey of muscle characteristics after statin‑induced rhabdomyolysis
2010
Aims: The etiology of statin-induced rhabdomyolysis (SIR) remains obscure. Most explanations claim deficiency of one of the main end products of the HMG-CoA reductase pathway. Experimental work has rarely tested the skeletal muscle of humans after SIR. Methods: We compared muscle from ten SIR patients with muscle from eight age-matched, statin-naive control subjects. We evaluated differences in muscle histochemistry, sterol biochemistry, prenylated proteins, atrogin-1 and mitochondrial content to assess which characteristics distinguished the rhabdomyolysis reaction from normal age-matched muscle. Results: Plant sterols were significantly increased in muscle from SIR subjects compared with ontrol subjects. Ras was significantly reduced and there was a trend towards increased atrogin-1 in SIR subjects compared with ontrol subject muscle. There was no difference in cholesterol concentrations, mitochondrial content or coenzyme Q10 between groups. Conclusions: This evaluation of muscle from a small sample of ...
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