Hypoglycemic activity of polypeptide-p from a plant source

Area of Science:

• Biochemistry
• Pharmacology
• Botany

Background:

• Momordica charantia Linn (bitter gourd) is traditionally used for its medicinal properties.
• The presence of bioactive compounds in bitter gourd suggests potential therapeutic applications.
• Isolation of specific active components is crucial for understanding their mechanisms and efficacy.

Purpose of the Study:

• To isolate and characterize a hypoglycemic peptide from Momordica charantia.
• To determine the molecular weight and amino acid composition of the isolated peptide.
• To evaluate the hypoglycemic efficacy of the peptide in preclinical and clinical settings.

Main Methods:

• Extraction and purification of the peptide from various parts of Momordica charantia.
• Amino acid analysis to determine molecular weight and composition.
• Subcutaneous administration to gerbils, langurs, and human subjects for efficacy testing.

Main Results:

• A hypoglycemic peptide, designated Polypeptide-p, was successfully isolated.
• Amino acid analysis revealed a minimum molecular weight of approximately 11,000 (166 residues).
• Polypeptide-p demonstrated significant blood glucose-lowering effects in all tested species.

Conclusions:

• Polypeptide-p is a potent hypoglycemic agent derived from Momordica charantia.
• The peptide holds promise as a natural therapeutic agent for managing hyperglycemia.
• Further research into the mechanism of action and optimal dosage is warranted.