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A Preliminary Investigation of the Possible Hypoglycemic Activity of Hibiscus rosa-sinensis

Biomedical and Environmental Sciences 1999年第3期12卷 222-226页

作者： archanasachdewa L·D·KHEMANI DepartmentofChemistry FacultyofScienceDayalbaghEducationalInstituteDayalbagh DepartmentofChemistry

The hypoglycemic activity of an ethanol extract of Hibiscus rosa-sinsnsis was studied in glucose located rats. Afer a single dose of the extract, a slight but insignificant hypoglycemic effect was observed at 30 and 90 min. At 120 min it was mild but significant. After repeated administration of the extract (once a day for seven consecutive days) a statistically significant (P < 0 .001 ) reduction in blood glucose levels was observed at 30, 90 and 120 min after glucose loading. The average hypoglycemic activity, after repeated administration of 250 mg kg-1 leaf extract was 81 %, under similar conditions average activity of tolbutamide was 96%. At 250 mg·kg-1 the efficacy of the extract was found to be 84% of tolbutawhde (100mg·kg- 1 ). Repeated treatment of animals either with tolbutandde a sulphonylurea or H. rosa-sinensis caused a 2-3-fold improvement in glucose tolerance as compared to those receiving only once. These data suggest that the leaf extract acts like tolbutamide and the meehanism of action may be a stimulation of pancreatic hata cells to produce more insulin or an increase of the glycogen deposition in liver. It appeare that the active principle in the tested extract has the sulphonylurea Skeleton in which -SO2-NH-CO- group and the substituents (S1 and S2) may be the possible active sites responsible for its hypolycemic activity.

关键词： Hypoglycemic Agents Animals Disease Models, Animal Glucose Tolerance Test Hyperglycemia Male Plant Extracts Rats

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