Pulsed electromagnetic fields alleviate streptozotocin‑induced diabetic muscle atrophy

Molecular Medicine Reports
Jin YangLiang Tang

Abstract

Diabetic muscle atrophy causes a reduction of skeletal muscle size and strength, which affects normal daily activities. However, pulsed electromagnetic fields (PEMFs) can retard the atrophy of type II fibers (ActRIIB) in denervated muscles. Therefore, the purpose of the present study was to determine whether PEMFs can alleviate streptozotocin (STZ)‑induced diabetic muscle atrophy. To do this, 40 Sprague‑Dawley (SD) rats were randomly divided into four groups (n=10 per group): The normal control group (NC; nondiabetic rats without treatment); the diabetic mellitus group (DM; STZ‑induced rats without treatment); the diabetic insulin‑treated group (DT; diabetic rats on insulin treatment, 6‑8 U/d twice a day for 6 weeks) as a positive control; and the diabetic PEMFs therapy group (DP; diabetic rats with PEMFs exposure treatment, 15 Hz, 1.46 mT, 30 min/day for 6 weeks). Body weight, muscle strength, muscle mass and serum insulin level were significantly increased in the DP group compared with the DM group. PEMFs also decreased the blood glucose level and altered the activity of metabolic enzymes. PEMFs significantly increased the cross‑sectional area of muscle fiber. In addition, PEMFs significantly activated protein kinase B (Akt) ...Continue Reading

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