Figure 5.

Hippocampal BDNF protein expression.

(A) Western blot results of BDNF.

(B) Comparison of the relative level of BDNF protein. ^aP < 0.01, vs. P8.SE; ^cP < 0.05,^dP < 0.01, vs. R1.SE; ^bP < 0.05, vs. R1.EE. The data are presented as mean ± SD (absorbance ratio of BDNF/β-actin). Differences between the groups were analyzed using analysis of variance and paired t -tests.

BDNF: Brain-derived neurotrophic factor; P8: senescence-accelerated prone mouse 8; R1: senescence accelerated-resistance mice 1; EE: enriched environment; SE: standard environment.