A molecular insight into fluoride toxicity in skeletal muscle using invitro C2C12 and in vivo C57BL/6 mice models

Fluoride toxicity in multiple organs has been extensively reported in several decades of research. In-depth study coverage is available on teeth and bone tissues. But studies addressing skeletal muscle fluorosis are scanty. C57BL/6 mice were provided with sodium fluoride in drinking water for 60 days. Histological analysis, primary culture of skeletal muscle was performed. Protein expressions were analyzed by Immunocytochemistry, qRT-PCR, and western blotting techniques. Proteomic approach was considered to overview the entire proteome response. Exposure to sodium fluoride resulted in the loss of body weight in C57BL/6 mice. The compactness of the myofibre arrangement was distorted due to the treatment. Major reduction of contractile proteins such as actinin, troponin, and myosin further loss of mitochondrial proteins were confirmed by proteomic approach. Sodium fluoride treatment altered mitochondrial function. Further, loss of contractile proteins triggered skeletal muscle weakness.