Tin Wui Wong Lijing Wang College of Life Sciences and Technology, China Pharmaceutical University, Nanjing, Jiangsu, Peoples Republic of China Correspondence: Lijing Wang, College of Life Science and Technology, China Pharmaceutical University, 639 Longmian Avenue, Jiangning District, Nanjing, Jiangsu, Peoples Republic of China, Tel +86 182 860 69474, Email [email protected]
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Key pharmacological effects include: Glucose-dependent insulin secretion Enhanced pancreatic beta-cell insulin release only when blood glucose is elevated, reducing hypoglycemia risk Suppression of glucagon secretion Decreased hepatic glucose production from pancreatic alpha cells Delayed gastric emptying Slowed movement of food from the stomach to the small intestine Central appetite regulation Reduced hunger and increased satiety through hypothalamic pathways The delayed gastric emptying effect is particularly significant and represents both a therapeutic mechanism and a potential source of adverse effects
Berberine also affects P-glycoprotein and cytochrome P450 enzymes responsible for metabolizing many medications
However, tirzepatide binds with 5-fold less affinity and is 13-fold less potent at the human GLP-1R than native GLP-1 [84], thus exhibiting bias for the GIPR
