Characterization of hyperuricemia model mice.
A–D, time course of serum uric acid levels (A), food intake (B), water consumption (C), and body weight (D) in mice during the feeding of a 2% OA-containing diet. Each value represents the mean ± S.D. (n = 6–7). E and F, the renal expression of neutrophil gelatinase-associated lipocalin-2 (Ngal) mRNA (E) and SUN concentrations (F) in mice after feeding of the 2% OA-containing diet for 14 days. Each value represents the mean ± S.D. (n = 6–7). G, temporal profiles of serum uric acid levels in mice during feeding of the 2% OA-containing diet. Blood samples were collected at ZT2 and ZT14 on the indicated day. Each value represents the mean ± S.D. (n = 3). H, temporal profiles of XOD activity in the livers of mice after feeding the 2% OA-containing diet for 14 days. Each value represents the mean ± S.D. (n = 3). I, temporal profiles of uric acid contents in the livers of mice after feeding the 2% OA-containing diet for 14 days. Each value represents the mean ± S.D. (n = 3). There was a significant time-dependent variation in the hepatic contents of uric acid in mice fed the control diet (F5,12 = 6.884, p = 0.003; ANOVA) and 2% OA-containing diet (F5,12 = 4.638, p = 0.014; ANOVA). J, temporal profiles of serum uric acid levels in mice after feeding of the 2% OA-containing diet for 14 days. There were significant time-dependent variations in serum uric acid levels in mice fed the control diet (F5,30 = 2.994, p = 0.026; ANOVA) and those fed the 2% OA-containing diet (F5,36 = 2.907, p = 0.026; ANOVA).