ABSTRACT
Objective To investigate the expression of inflammtory factor genes change induced by sodium sulfite.Methods MTS assay was used to detect the cell toxicity to human embryonic kidney cell line 293(HEK293) of 0,0.0025,0.01,0.039,0.156,0.625,2.5,10 mmol/L sodium sulfite,morphological changes were observed with inversion microscope and RT-PCR was used to study the expression of mRNA changes of TNF-?,MCP-1 and IL-8.Results Cytotoxicity analysis showed that treatment of cells with 0.625,2.5,10 mmol/L Na2SO3 could significantly decrease the OD value,with the OD value of(0.354 75 ?0.021 24),(0.600 50?0.012 77),(0.784 75?0.009 85) respectively,compared with control group(2.514 5?0.202 265).When treated with ≤0.156 mmol/L Na2SO3,it sould not significantly affect cell viability,with the OD value of(2.473 75?0.069 99)-(2.625 00? 0.120 29).Morphological observation showed that exposure of ≥0.625 mmol/L Na2SO3 could decrease cell numbers significantly and living cells seemed narrower and longer than the usual way with fewer evection.But lower concentrations of Na2SO3(≤0.156 mmol/L) did not change cell numbers and cell morphology.RT-PCR result showed that treatment of 0.039-10 mmol/L Na2SO3 could not induce the expression of TNF-?,MCP-1 and IL-8.Conclusion Na2SO3 can cause significant inhibition and injury in HEK293,but can not up regulate the expression of mRNA of TNF-?,MCP-1 and IL-8,and there is no obvious relation between them.