Figure 3.
Effect of Uncaria tomentosa (UT) on glucose metabolism of HFD mice. The animals were fed a HFD for 12-week period and then administered 50 mg.kg-1 b.w. of crude plant extract (UT), once a day, for 5 consecutive days or saline under the same regimen. The groups were: standard diet (SD), standard diet+UT (SD+UT), high fat diet (HFD) and high fat diet+UT (HFD+UT). The results are presented as mean ± SEM. The statistical differences as indicated by two-way ANOVA. Fasting blood glucose is represented in (A); *p < 0.0001 (SD vs. HFD, SD vs. HFD+UT), #p < 0.0001 (SD+UT vs. HFD, SD+UT vs. HFD+UT), &p < 0.0001 (HFD vs. HFD+UT); n = 5. Fasting blood insulin concentration (B); *p < 0.01 (SD vs. HFD), #p < 0.01 (SD+UT vs. HFD), &p < 0.05 (HFD vs. HFD+UT), n = 4. GTT is represented in (C); *p < 0.05 (SD vs. HFD; SD vs. HFD+UT), #p < 0.05 (SD+UT vs. HFD; SD+UT vs. HFD+UT; n = 10. Insulin tolerance test (ITT) is represented in (D); *p < 0.05 (compared to SD), #p < 0.05 (compared to SD+UT), &p < 0.05 (compared to HFD), n = 5. Phosphorylated proteins (E–H) were represented by the ratio of the optical densitometry of phosphorylated protein and total protein expression. The statistical differences as indicated by two-way ANOVA were as follows: *p < 0.05 (stimulated groups (+) vs. not stimulated groups (−) with insulin), #p < 0.05 (compared to SD+), &p < 0.05 (compared to SD+UT), $p < 0.05 (compared to HFD+); n = 6.