Abstract
The antihyperglycemic action of myricetin, purified from the aerial part of Abelmoschus moschatus (Malvaceae), was investigated in streptozotocin-induced diabetic rats (STZ-diabetic rats). Bolus intravenous injection of myricetin decreased the plasma glucose concentrations in a dose-dependent manner in STZ-diabetic rats. Myricetin at the effective dose (1.0 mg/kg) significantly attenuated the increase of plasma glucose induced by an intravenous glucose challenge test in normal rats. A stimulatory effect of myricetin on glucose uptake of the soleus muscles isolated from STZ-diabetic rats was obtained in a concentration-dependent manner from 0.01 to 10.0 μmol/L. The increase of glucose utilization by myricetin was further characterized using the enhancement of glycogen synthesis in isolated hepatocytes of STZ-diabetic rats. These results suggest that myricetin has an ability to enhance glucose utilization to lower plasma glucose in diabetic rats lacking insulin.
| Original language | English |
|---|---|
| Pages (from-to) | 617-621 |
| Number of pages | 5 |
| Journal | Planta Medica |
| Volume | 71 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 2005 |
Keywords
- Abelmoschus moschatus
- Glucose uptake
- Glycogen synthesis
- Malvaceae
- Myricetin
- STZ-diabetic rats
ASJC Scopus subject areas
- Plant Science
- Organic Chemistry
- Drug Discovery
- Pharmacology
