Effect of chronic consumption of 30% fructose solution and bile acids on occludin concentration in the duodenum and portal endotoxin levels. A: Representative Western blots of occludin and quantitative analysis of blots. Data for occludin were normalized to β-actin. B: Portal endotoxin concentration. Data are shown as means ± SEM (occludin, n = 5–6; endotoxin, n = 3–6) and are normalized to percent of control. aP < 0.05 compared with mice fed water; bP < 0.05 compared with mice fed water + bile acids. C, water; BA, bile acid; F, 30% fructose solution.