Table 2.

Pearson correlations (r) of plasma cytokine and BDNF levels and WMS-R index scores

Variable	Verbal Memory Index	Visual Memory Index	General Memory Index	Attention/Concentration Index	Delayed Recall Index
TNF-α	−0.04	−0.15	−0.08	0.07	−0.01
CRP	−0.19*	−0.16*	−0.22**	−0.25**	−0.21*
IL-6	−0.28**	−0.10	−0.24*	0.01	−0.22*
TGF-β1	−0.12	−0.10	−0.16*	−0.05*	−0.16
BDNF	−0.07	−0.09	−0.10	−0.02	−0.12

WMS-R: Wechsler memory scale-revised; BDNF: brain-derived neurotrophic factor; TNF-α: tumor necrosis factor α; CRP: C-reactive protein; TGF-β1: transforming growth factor-β1; IL-6: interleukin-6.

^*P < 0.05;

^**P < 0.01.