Figure 4.
Effect of Uncaria tomentosa (UT) on glucose metabolism of ob/ob mice. The adult male mice were fed with standard chow and then administered 50 mg.kg−1 b.w. of crude UT extract, once a day, for 5 consecutive days or saline under the same regimen. The results are presented as mean ± SEM. The statistical differences as indicated by Student’s t-test. Fasting blood glucose is represented in (A) n = 6, p < 0.0001. Fasting blood insulin concentration (B); p < 0.05, n = 4–7. GTT is represented in (C) n = 6, p < 0.01. ITT is represented in (D), 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 (4E and 4F: stimulated groups (+) vs. not stimulated groups (−) with insulin), *p < 0.05 (4 H: ob/ob- vs. ob/ob+UT−; ob/ob- vs. ob/ob+UT+), #p < 0.05 (ob/ob+ vs. ob/ob+UT−, obo/b+ vs. ob/ob+UT+), n = 5.