an increasing trendp = 0.095
In the vehicle groups, there was an increasing trend in BDNF expression ( p = 0.095) and a significant up-regulation of TrkB expression in NOB-SNL rats ( p < 0.001) compared with NOB-Sham rats, while the expression of BDNF and TrkB in OB-SNL rats was lower than that in NOB-SNL rats ( p = 0.002 and p < 0.001, respectively) and OB-Sham group ( p < 0.001).