Study on the therapeutic effect and mechanism of Tangningtongluo Tablet on diabetic mice

To investigate the therapeutic effects of Tangningtongluo Tablet on diabetic mice and its mechanism. This study was established the scientific basis for the clinical application of Tangningtongluo Tablet in the treatment of diabetes mellitus and provided data supporting the transformation of Tangningtongluo Tablet from an in-hospital preparation to a new Chinese medicine.In this study, a diabetic mouse model was established by high-glucose and high-fat diet feeding in combination with STZ injection for 4 weeks. Glucose metabolism, lipid metabolism, liver histomorphological changes and liver function related indexes were detected, pancreatic histomorphological changes and insulin resistance related indexes were observed, and the expression of pathway related proteins and inflammatory factors were examined.Glycemia and glycated hemoglobin were reduced in diabetic mice after the treatment of Tangningtongluo Tablet, and glucose tolerance and lipid results were modified. The insulin resistance status of the mice was diminished and tissue damage to the pancreas and liver was repaired. Expression of ERS/NF-κB related pathway proteins was reduced in liver tissues, and inflammatory factors such as TNF-α, IL-6 and IL-1β were reduced in serum.Tangningtongluo Tablet could reduce blood glucose in diabetic mice, regulate the disorder of lipid metabolism, enhance insulin sensitivity, improve insulin resistance, repair pancreatic tissue damage and protect mouse liver in diabetic mice. The mechanism of action might be related to the regulation of ERS/NF-κB signaling pathway and the reduction of TNF-α, IL-6 and IL-1β production.