MOA - DM Flashcards
- Similarly to SU’s but at different site
- Stimulates insulin secretion from β-cells
- Requires glucose to stimulate insulin secretion
Meglitinides
Binds the peroxisome proliferator activator receptor-γ (PPAR-γ) enhancing insulin sensitivity at skeletal muscle, liver, and fat cells
Thiazolidinediones (TZDs) - Insulin Sensitizers
Centrally reverses metabolic changes that’s associated with insulin resistance and obesity
Dopamine Agonist
- Reduces glucose in circulation by facilitating uptake into insulin-sensitive peripheral tissues
- Inhibits hepatic glucose output and glucagon secretion
Insulin
Increases insulin secretion in response to high blood glucose levels (>90mg/dL)
- Suppresses glucagon secretion
- Slows gastric emptying - Increases satiety
- Stimulates β-cell life, fx, and upregulates
Glucagon-like Peptide 1 (GLP-1) Agonists
Delays breakdown of sucrose and complex CHO to glucose and other monosaccharides by inhibiting maltase, isomaltase, sucrose, and glucoamylase in the small intestine
- Reduces post-prandial blood glucose increase
- Glucose, lactose, and fructose not affected
α-Glucosidase Inhibitors
- Inhibits SGLT2 which reduces glucose reabsorption in the renal tubules
- Lowers renal threshold for glucose which increases urinary glucose excretion
Selective Na+ Dependent Glucose CoTransporter-2 Inhibitors (SGLT2)
Prevents degradation of incretins
- increases insulin secretion,
- decreases glucagon secretion (glucose-dependent)
Dipeptidyl Peptidase-4 (DPP-4) Inhibitors
Suppress high postprandial glucagon secretion
Slows gastric emptying - Increases satiety + wgt loss
Slows rate of glucose appearing in plasma
Synthetic Amylin Analogue (Hormone)
- Decreases liver gluconeogenesis and glycogenolysis. -Increases insulin sensitivity in fat and peripheral tissues
- Slows intestinal absorption of sugars
Biguanides - Insulin Sensitizers
Binds bile acids/salts in small intestine for excretion; Then cholesterol is pulled from BF and converted into more bile acids. reducing blood cholesterol.
May reduce hepatic insulin resistance and decrease hepatic glucose/intestinal glucose.
Bile Acid Sequestrants
Binds to sulfonylurea receptors on pancreatic β cells and stimulates insulin secretion.
Sulfonylureas (SU) - Insulin Secretagogues