Figure 6.
Insulin-like growth factor-binding protein (IGFBP)-1 correlation between the serum and liver in the development study. (A) Comparison of serum IGFBP-1 (sIGFBP-1) levels in various dipeptidyl peptidase (DPP)-4 inhibitor studies. (B) Comparison of liver and sIGFBP-1 expression after administration according to IGFBP-1 expression level before administration in various DPP-4 inhibitor studies. (C) Result of correlation analysis between sIGFBP-1 and alanine aminotransferase (ALT), aspartate aminotransferase (AST), and triglyceride (TG) levels in various DPP-4 inhibitor studies. (D) Correlation analysis between liver and serum IGFBP-1 levels in various DPP-4 inhibitor studies. All data are expressed as the mean±standard deviation. NC, normal chow; CDHF, choline-deficient high-fat diet; HFD, high-fat diet. *P=0.01–0.05. **P=0.001–0.01.