PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20040516-10 2010 Collectively, we show that Sod1(-/-) mice display characteristics of normal aging muscle in an accelerated manner and propose that the superoxide-induced NMJ degeneration and mitochondrial dysfunction are potential mechanisms of sarcopenia. Superoxides 135-145 superoxide dismutase 1, soluble Mus musculus 27-31