Skeletal muscle ultrastructure and function in statin-tolerant individuals.

Abstract:

INTRODUCTION:Statins have well-known benefits on cardiovascular mortality, though up to 15% of patients experience side effects. With guidelines from the American Heart Association, American College of Cardiology, and American Diabetes Association expected to double the number of statin users, the overall incidence of myalgia and myopathy will increase. METHODS:We evaluated skeletal muscle structure and contractile function at the molecular, cellular, and whole tissue levels in 12 statin tolerant and 12 control subjects. RESULTS:Myosin isoform expression, fiber type distributions, single fiber maximal Ca(2+) -activated tension, and whole muscle contractile force were similar between groups. No differences were observed in myosin-actin cross-bridge kinetics in myosin heavy chain I or IIA fibers. CONCLUSIONS:We found no evidence for statin-induced changes in muscle morphology at the molecular, cellular, or whole tissue levels. Collectively, our data show that chronic statin therapy in healthy asymptomatic individuals does not promote deleterious myofilament structural or functional adaptations.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Rengo JL,Callahan DM,Savage PD,Ades PA,Toth MJ

doi

10.1002/mus.24722

subject

Has Abstract

pub_date

2016-02-01 00:00:00

pages

242-51

issue

2

eissn

0148-639X

issn

1097-4598

journal_volume

53

pub_type

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