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Glimepiride is a long-acting, third-generation sulfonylurea with hypoglycemic activity. Compared to other generations of sulfonylurea compounds, glimepiride is very potent and has a longer duration of action. This agent is metabolized by CYP2C9 and shows peroxisome proliferator-activated receptor gamma (PPARgamma) agonistic activity.
Glimepiride is only found in individuals that have used or taken this drug. It is the first III generation sulphonyl urea it is a very potent sulphonyl urea with long duration of action. The mechanism of action of glimepiride in lowering blood glucose appears to be dependent on stimulating the release of insulin from functioning pancreatic beta cells, and increasing sensitivity of peripheral tissues to insulin. Glimepiride likely binds to ATP-sensitive potassium channel receptors on the pancreatic cell surface, reducing potassium conductance and causing depolarization of the membrane. Membrane depolarization stimulates calcium ion influx through voltage-sensitive calcium channels. This increase in intracellular calcium ion concentration induces the secretion of insulin.