Hypoglycemic Potential of Aqueous Extract of Moringa oleifera Leaf and In Vivo GC-MS Metabolomics

Researchers investigated the blood sugar-lowering effects of moringa leaf water extract using multiple diabetes models in laboratory animals. The team prepared aqueous extracts through 24-hour water maceration and tested them on both type 1 diabetes (induced with streptozotocin injections) and type 2 diabetes (induced with high-fat diets). The extract demonstrated significant glucose-lowering activity, reducing blood sugar by nearly 48% in acute testing and 44.5% in long-term treatment compared to untreated controls. Beyond blood sugar reduction, the extract inhibited key carbohydrate-digesting enzymes (α-amylase and α-glucosidase), improved glucose tolerance, and enhanced glucose uptake in yeast cells. The researchers used advanced analytical techniques including GC-MS and HPLC to profile the extract's chemical composition and tracked metabolic changes in animal blood after treatment. Fasting blood glucose levels, lipid profiles, and liver enzyme markers all showed statistically significant improvements in both diabetes models. The study employed multivariate analysis to identify distinct metabolite patterns, revealing clear differences between the extract composition and blood metabolites after oral administration. This research provides scientific validation for traditional Ayurvedic uses of moringa, demonstrating measurable antidiabetic effects through multiple biological mechanisms including enzyme inhibition, improved glucose tolerance, and enhanced cellular glucose uptake.