The aim of this study was to observe the influence of gap junction (GJ) functional changes on the hepatotoxicity of TNF-α. Three different methods were employed to study functional effects of the GJ inhibition: 1) pretreatment with a GJ inhibitor; 2) inoculation of cells at high and low densities; and 3) inhibition of the expression of connexin 32 (Cx32) by small inhibitory RNA transfection. We then observed the influence of these treatments on hepatotoxicity following treatment with different concentrations of TNF-α for various duration. The hepatotoxicity of TNF-α was observed to occur in a dose- and time-dependent manner; after pretreatment inhibition, the hepatotoxicity of TNF-α was significantly reduced
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