ArticleJournal of clinical practice and research2025
Effects of Vitamin D, Infliximab, and Leflunomide on Isolated Rat Striated Muscle with Electrical and Mechanical Stimuli in Statin-Induced Rhabdomyopathy.
Article in Journal of clinical practice and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: The most common adverse effects of statins are muscle disorders. This study investigated the effects of vitamin D, infliximab, and leflunomide on statin-induced rhabdomyopathy by evaluating myofibrillar contractions under electrical and mechanical stimulation. Materials and Methods: Twenty-four rats were induced rhabdomyopathy using atorvastatin (100 mg/kg/day for three weeks). The rats were then divided into four groups: Group 1 (n=6) received vitamin D (0.2 µg/kg), Group 2 (n=6) received infliximab (7 mg/kg), Group 3 (n=6) received leflunomide (10 mg/kg), and Group 4 (n=6) received saline as a control. In vitro organ bath experiments were performed using electrical and mechanical stimulations on the isolated extensor digitorum longus muscle to assess contraction responses. Blood and tissue samples were analyzed for creatine kinase (CK), lactate dehydrogenase (LDH), aspartate aminotransferase (AST), alanine aminotransferase (ALT), blood urea nitrogen (BUN), glutathione peroxidase (GPx), and malondialdehyde (MDA). Results: Group 1 demonstrated significant improvements in contractile responses (Twitch: Group 1 vs. Group 2, p=0.004; Group 1 vs. Group 3, p=0.025; Group 1 vs. Group 4, p<0.001. At 20: Hz: Group 1 vs. Group 2, p=0.018; Group 1 vs. Group 4, p=0.001; Group 3 vs. Group 4, p=0.015. At 80: Hz: Group 1 vs. Group 2, p=0.008; Group 1 vs. Group 3, p=0.0016; Group 1 vs. Group 4, p<0.001. At 100 Hz: Group 1 vs. Group 2, p=0.006; Group 1 vs. Group 3, p=0.015; Group 1 vs. Group 4, p<0.001). At 40-60 Hz and 120-140 Hz, Groups 1, 2, and 3 showed higher responses than Group 4 (p<0.05). Impulse conduction velocity in Group 1 was higher than in Group 4 (p=0.019). Group 1 exhibited significant differences in renal GPx (Group 1 vs. Group 3, p=0.023) and MDA (Group 1 vs. Group 2, p=0.001; Group 1 vs. Group 3, p=0.003). Additionally, Group 1 showed significant improvements in histopathologic evaluation compared to the control group (p<0.05). Conclusion: Vitamin D enhanced impulse conduction velocity and contraction response of striated muscle following electrical and mechanical stimulation in rhabdomyopathy. Monitoring vitamin D levels in dyslipidemic patients may serve as a predictive marker for adverse effects of statins. Providing these patients with vitamin D supplementation may improve statin intolerance.
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