Natural History of Serum Enzyme Levels in Duchenne Muscular Dystrophy and Implications for Clinical Practice.

American Journal of Physical Medicine & Rehabilitation
Maricela Rodríguez-CruzMariela Bernabe-García

Abstract

In Duchenne muscular dystrophy, creatine kinase and transaminases are released into the circulation, indicating muscle injury. Their usefulness in monitoring muscle injury or disease progression has not yet been fully evaluated. Thus, this study examined serum creatine kinase and transaminase concentrations at different ages in patients with Duchenne muscular dystrophy and evaluated their association with muscle injury. This is a prospective cohort study that included 110 patients with Duchenne muscular dystrophy categorized by age groups. Creatine kinase and transaminases were quantified in the serum; the Vignos scale evaluated the muscle function. Creatine kinase and transaminase levels were higher in ambulatory than that in nonambulatory patients, which significantly decreased as age increased. Serum creatine kinase and transaminase concentrations were elevated in all ages, and those aged 3-4 yrs had the highest concentrations. Age and Vignos Scale were significantly correlated with creatine kinase and transaminase concentrations. Age, creatine kinase, and transaminases explained the 42.5% of loss of muscle function. This study added the knowledge on the natural history of Duchenne muscular dystrophy at different ages and co...Continue Reading

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