Patients with dystrophinopathy show evidence of increased oxidative stress
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Duchenne muscular dystrophy (DMD) is associated with an increase in oxidative stress. We measured 24 h 8-hydroxy-2'-deoxyguanosine (8-OHdG) excretion in 24 patients with MD (DMD + Becker's MD), 23 with myotonic dystrophy, and 34 healthy controls. The 8-OHdG/creatinine ratio was higher in patients with dystrophinopathy ( upward arrow 48%, p <.01) but not myotonic dystrophy, as compared to healthy controls. These results indicate that 8-OHdG excretion can be used as a marker of oxidative stress in clinical trials with dystrophinopathy.
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