Research Article

Suppressive Effect of Hydroquinone, a Benzene Metabolite, on In Vitro Inflammatory Responses Mediated by Macrophages, Monocytes, and Lymphocytes

Figure 2

Effect of hydroquinone on the production of cytokines and their mRNA expression in LPS-activated RAW264.7 cells. (a) RAW264.7 cells (  cells/mL) were incubated with indicated concentrations of HQ (hydroquinone) in the presence or absence of LPS (2  g/mL) for 12 hours. Secreted levels of TNF-α, IL-1β, and IL-6 in culture supernatant were determined by ELISA. (b) The mRNA levels of proinflammatory cytokines from the RAW264.7 cells were determined by semiquantitative RT-PCR. The results show one representative experiment of three. and represent significant difference as compared to control.
298010.fig.002a
(a)
298010.fig.002b
(b)