Real-time RT-PCR. (A) TNF-α gene expression; (B) iNOS gene expression; (C) IL-1β gene expression; (D) IL-6 gene expression; (E) CXCL10 gene expression; (F) Arginase gene expression, after the treatment with α-syn alone (5 μM) or with HT (1, 10, 25, and 50 μM). Data are expressed as mean ± SEM (n = 3), normalized to β-actin, and expressed as percentage relative to the control group. Statistical significance (one-way ANOVA followed by the LSD post hoc test for multiple comparisons): * compared with the control group; # compared with the Syn group; § compared with the Syn + HT 1 μM group; p < 0.01.