Table 2.

Comparison of serum HMGB1 and TLR4 levels in patients with Parkinson's disease (PD) and healthy volunteers (mean ± standard deviation, ng/L)

Group	Cases	HMGB1	TLR4
Control group	100	1.3 ± 0.18	0.87 ± 0.12
PD group	120	5.96 ± 2.1	2.56 ± 0.78
t value		22.7	21.2
p value		<.0001	<.0001