Figure 1. Inflammatory markers are increased in the brains of SAMP8 mice during the aging process. (A) The dynamic changes of Il1b mRNA levels in the brains of 4-, 8-, and 12-month-old SAMP8 mice as well as their age-matched SAMR1 control mice were investigated by qRT-PCR. (B) The dynamic changes of Il6 mRNA levels in the brains of 4-, 8-, and 12-month-old SAMP8 mice as well as their age-matched SAMR1 control mice were investigated by qRT-PCR. (C) The dynamic changes of Tnf mRNA levels in the brains of 4-, 8-, and 12-month-old SAMP8 mice as well as their age-matched SAMR1 control mice were investigated by qRT-PCR. Gapdh was used as an internal control. All data were analyzed by one-way ANOVA followed by Tukey’s post hoc test and were expressed as a fold change relative to 4-month-old SAMR1 control mice. Columns represent mean ± SD (n=8 per group). *P<0.05. #P<0.05 versus age-matched SAMR1 control mice.