Antidiabetic Effects of Quercetin and Silk Sericin in Attenuating Dysregulation of Hepatic Gluconeogenesis in Diabetic Rats Through Potential Modulation of PI3K/Akt/FOXO1 Signaling: In Vivo and In Silico Studies
Abstract
Type 2 diabetes mellitus (T2DM) is an intricate disease correlated with many metabolic deregulations, including disordered glucose metabolism, oxidative stress, inflammation, and cellular apoptosis due to hepatic gluconeogenesis aberrations. However, there is no radical therapy to inhibit hepatic gluconeogenesis disturbances yet. We thus sought to probe the effectiveness and uncover the potential mechanism of quercetin (QCT) and silk sericin (SS) in mitigating hyperglycemia-induced hepatic gluconeogenesis disorder, which remains obscure. Administration of QCT and SS to diabetic male albino rats markedly restored the levels of glucose, insulin, advanced glycation end-products (AGEs), liver function enzymes, alpha-fetoprotein (AFP), globulin, and glycogen, in addition to hepatic carbohydrate metabolizing enzymes and gluconeogenesis in comparison with diabetic rats. Furthermore, treatment with QCT and SS modulated hepatic malondialdehyde (MD), reduced glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), nitric oxide, tumor necrosis factor-alpha (TNF-α), and interleukin-1β (IL-1β), in addition to serum interleukin-6 (IL-6) and cyclooxygenase-2 (COX-2), implying their effectiveness in safeguarding cells against oxidative impairment and inflammation. Remarkably, QCT and SS treatments led to the upregulation of expression of phosphatidylinositol 3-kinases (PI3K), phospho-Akt (p-Akt), and forkhead box-O1 (FOXO1) genes in hepatic tissues…
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