Isoquercetin regulates SREBP-1C via AMPK pathway in skeletal muscle to exert antihyperlipidemic and anti-inflammatory effects in STZ induced diabetic rats.

Diabetes mellitus (DM) is a cluster of metabolic diseases that exhibits high blood glucose levels accompanied by hyperlipidemia and inflammation. DM is the primary risk factor contributes majorly to cardiovascular disease (CVD) mediated morbidity and mortality. The incidence of dyslipidemia seems to attribute considerably to the initiation of CVDs. The beneficial action of isoquercetin on hyperlipidemia and related signaling pathways are not documented yet, hence we decide to carry out this study. The experimental rats were divided into five groups: Group 1, control rats; group 2, isoquercetin control (40 mg/kg b.w); group 3, diabetic rats (STZ-40 mg/kg b.w); group 4, diabetic + isoquercetin (40 mg/kg b.w); and group 5, diabetic + glibenclamide (600 µg/kg b.w). The animals were sacrificed at the end of the experimental duration of 45 days. Results of our analysis reveal that isoquercetin have a major impact on the tissue lipid profile, isoquercetin strongly regulates the expression of various lipid-metabolizing enzymes, C-reactive protein, expression of various inflammatory genes, SREBP-1C genes and proteins and AMP-activated protein kinase-α (AMPK) signaling pathway genes and proteins. Results recommend that isoquercetin can be effective in mitigating the consequences of hyperlipidemia and DM.