Fig. 1.

The expression levels of enzymes related to cholesterol metabolism in the liver of Wistar rat fed diets of the control (□), ProtL (▒), and ProtH (■) diets. Data are means ± SD (n = 7). Relative values are presented as the ratio of each mRNA to GAPDH mRNA. Values not sharing a common letter are significantly different at P < 0.05. Data were analyzed by Tukey-Kramer test. The expression levels of enzymes related to cholesterol metabolism were analyzed by the real-time quantitative polymerase chain reaction method. CYP7A1, cholesterol 7α-hydroxylase; HMGR, 3-hydroxy-3methylglutaryl-CoA reductase; LDL-R, low density lipoprotein receptor; SR-B1, scavenger receptor class B type 1; ABCA1, ATP-binding cassette A1; ABCG5, ATP-binding cassette G5; ABCG8, ATP-binding cassette G8; GAPDH, glyceraldehyde-3-phosphate dehydrogenase