FIGURE 5.
Glucocorticoid prereceptor metabolism and GR protein level in the liver. Representative Western blots and relative quantification of 11β-HSD1 and H6PDH protein levels in microsomal fraction (A) and GR protein levels in cytoplasmatic and nuclear fraction (C) of the liver of adults (6 mAL), aged rats on AL diet (24 mAL), and old rats on CR (24 mCR). Calnexin, β-actin and Lamin B1 were used as loading controls for microsomal, cytoplasmatic, and nuclear fraction, respectively. Quantification of 5α-reductase mRNA (B) level in the liver was done relative to the amount of β-actin. All values are given as means ± SEM (n = 8). Asterisk indicates significant difference between aged rats on AL diet and adults (24 mAL vs. 6 mAL, *p < 0.05) and symbol $ indicates a significant difference between old rats on CR and adults fed AL (24 mCR vs. 6 mAL, $p < 0.05).
