Abstract
ABSTRACT β-HgS, differing from environmental mercury pollutants (MeHgCl and HgCl2) in chemical form, is used as traditional medicine in Asian countries for thousands of years. In this study, Neuro-2a cells were exposed to β-HgS, MeHgCl and HgCl2 (5 µM) for 6–24 h. The cell viability of β-HgS was higher than MeHgCl with 25.9% and 72.4% in 12 h and 24 h respectively. As the incubation time increased, MeHgCl had obvious damage to cell morphology, decreased the ratio of Bcl-2 and Bak and increased the expressions of TNF-α, IL-6 and IL-1β significantly. Furthermore, the expressions of IL-1β and IL-6 in HgCl2 group were increased significantly in 6 h and 24 h. The apoptotic rates in MeHgCl and HgCl2 group were respectively higher than β-HgS with 32.2% and 7.30% in 24 h. Our findings indicate that β-HgS is much less neurotoxicity than MeHgCl and HgCl2 in Neuro-2a cells.
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