Effect of Quercetin on Dexamethasone-Induced C2C12 Skeletal Muscle Cell Injury.
Chun ChenJai-Sing YangChi-Cheng LuYu-Jen ChiuHung-Che ChenMei-Ing ChungYu-Tse WuFu-An ChenPublished in: Molecules (Basel, Switzerland) (2020)
Glucocorticoids are widely used anti-inflammatory drugs in clinical settings. However, they can induce skeletal muscle atrophy by reducing fiber cross-sectional area and myofibrillar protein content. Studies have proven that antioxidants can improve glucocorticoid-induced skeletal muscle atrophy. Quercetin is a potent antioxidant flavonoid widely distributed in fruits and vegetables and has shown protective effects against dexamethasone-induced skeletal muscle atrophy. In this study, we demonstrated that dexamethasone significantly inhibited cell growth and induced cell apoptosis by stimulating hydroxyl free radical production in C2C12 skeletal muscle cells. Our results evidenced that quercetin increased C2C12 skeletal cell viability and exerted antiapoptotic effects on dexamethasone-treated C2C12 cells by regulating mitochondrial membrane potential (ΔΨm) and reducing oxidative species. Quercetin can protect against dexamethasone-induced muscle atrophy by regulating the Bax/Bcl-2 ratio at the protein level and abnormal ΔΨm, which leads to the suppression of apoptosis.
Keyphrases
- skeletal muscle
- high glucose
- diabetic rats
- oxidative stress
- insulin resistance
- low dose
- induced apoptosis
- high dose
- cell cycle arrest
- cross sectional
- drug induced
- stem cells
- cell proliferation
- cell therapy
- risk assessment
- single cell
- heavy metals
- bone marrow
- human health
- binding protein
- anti inflammatory drugs
- pi k akt
- genetic diversity