鉛暴露對體外血腦脊液屏障功能及ZO-1和閉合蛋白表達的影響
[Abstract]:Objective to study the possible mechanism of BCB damage induced by lead by establishing (BCB) model of blood-cerebrospinal fluid barrier in vitro. Methods BCB cell model was established by using Z310 cells in vitro. The cells were exposed to Pb (AC) 22.5 mmol 5.0 and 10.0 mmol L -1 for 24 h and 72 h, respectively. Transendothelial resistance (TEER) and dextran were used to detect the permeability of BCB model, and Western blot and immunofluorescence were used to detect the expression and distribution of close-junction protein ZO-1 and closed protein in BCB. Results compared with the control group, Pb (AC) 22.5 and 10.0 mmol L-1 exposure for 48 h had no significant effect on the survival rate and density of Z310 cells. On the 12th day after exposure, the TEER values of, Pb (AC) 25.0 and 10.0 mmol L-1 groups were significantly lower than those of the control group (P0.05). The pass-through rate of dextran was significantly increased (P0.05). Western blot and immunofluorescence assay showed that compared with the control group, Pb (AC) _ 2 was exposed to different concentrations for 48 h. The expression level of ZO-1 and closed protein was significantly decreased (P0.05). Conclusion lead exposure can damage the permeability of BCB model, and its mechanism may be related to the inhibition of tight junction protein expression.
【作者單位】: 中國人民解放軍第四軍醫(yī)大學(xué)軍事預(yù)防醫(yī)學(xué)系軍隊勞動與環(huán)境衛(wèi)生學(xué)教研室;
【基金】:國家自然科學(xué)基金(81472942) 第四軍醫(yī)大學(xué)青年英才培育計劃(4139Z3B6BC)~~
【分類號】:R114
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