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Oral Hypoglycemic Agents: Glinides

Oral Hypoglycemic Agents: Glinides

Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively manages...

Oral Hypoglycemic Agents: Biguanides and Glitazones

Oral Hypoglycemic Agents: Biguanides and Glitazones

Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood glucose levels...

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are typically...

Oral Hypoglycemic Agents: Sulfonylureas

Oral Hypoglycemic Agents: Sulfonylureas

Sulfonylureas are oral hypoglycemic agents utilized in treating type 2 diabetes. They are characterized by their unique sulfonylurea chemical structure. The family of sulfonylureas is divided into generations. First-generation sulfonylureas, including tolbutamide (Orinase), chlorpropamide (Diabinese), and tolazamide (Tolinase), trigger insulin release from pancreatic β cells and enhance peripheral tissues' insulin sensitivity. The second-generation members, such as glipizide (Glucotrol),...

Glucagon-like Receptor Agonists

Glucagon-like Receptor Agonists

Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by the...

Dipeptidyl Peptidase 4 Inhibitors

Dipeptidyl Peptidase 4 Inhibitors

Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a significant...

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Related Experiment Video

Updated: Jul 15, 2026

An In Ovo Model for Testing Insulin-mimetic Compounds

An In Ovo Model for Testing Insulin-mimetic Compounds

Published on: April 23, 2018

[Unconventional antidiabetic agents].

Ingo Rustenbeck¹

¹Institut für Pharmakologie und Toxikologie, Technische Universität Braunschweig. i.rustenbeck@tu-bs.de

Medizinische Monatsschrift Fur Pharmazeuten

|May 9, 2007

Summary

Many type 2 diabetes patients use supplements and herbs for additional benefits. Evidence for their effectiveness and safety is limited, requiring more research into specific compounds.

Area of Science:

Endocrinology and Metabolic Diseases
Pharmacology
Nutritional Science

Context:

Type 2 diabetes management often fails to achieve long-term metabolic normalization.
Increasing numbers of diabetic patients are exploring dietary supplements and herbs.
Unconventional antidiabetic agents include trace elements (chromium, vanadium, zinc) and traditional herbs (Momordica charantia, Gymnema sylvestre, Trigonella foenum-graecum).

Purpose:

To review the current evidence for the antidiabetic effects of unconventional agents.
To assess the efficacy and safety of trace elements and herbs in managing type 2 diabetes.
To highlight the need for identifying specific active molecules and establishing dose-effect relationships.

Summary:

Trace elements like chromium and vanadium show potential in vitro but lack convincing clinical evidence in diabetic patients.

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Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion

Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion

Published on: May 10, 2018

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Last Updated: Jul 15, 2026

An In Ovo Model for Testing Insulin-mimetic Compounds

An In Ovo Model for Testing Insulin-mimetic Compounds

Published on: April 23, 2018

Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion

Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion

Published on: May 10, 2018

Several traditional herbs demonstrate blood glucose-lowering effects, but conclusive data on efficacy and safety are currently unavailable.

Identifying specific antidiabetic molecules, such as 4-hydroxyisoleucine from Trigonella foenum-graecum and compounds in cinnamon, is crucial for reliable therapeutic use.

Moderate coffee and alcohol consumption surprisingly reduce type 2 diabetes risk, comparable to conventional preventive drugs.

Impact:

Highlights the need for rigorous scientific validation of popular complementary and alternative medicine approaches in diabetes care.
Emphasizes the importance of patient-physician communication regarding the use of unconventional antidiabetic agents.
Suggests potential novel therapeutic targets and preventive strategies derived from natural sources and lifestyle factors.