腹膜透析液对腹膜间皮细胞TLR2和TLR4表达的影响

目的：观察不同浓度葡萄糖（dextrose）腹膜透析液、艾考糊精（icodextrin）腹膜透析液对人腹膜间皮细胞 Toll 样受体2（TLR2）和 TLR4表达的影响。方法体外培养人腹膜间皮细胞株第5～10代（HMrSV5，DMEM ／F12培养基含10％胎牛血清）用于实验研究。 M TT 检测细胞活力，实验分为5组：阴性对照组、1．50％ dextrose 组、2．50％ dextrose 组、4．25％ dextrose 组、7．5％ icodextrin 组，应用蛋白免疫印迹法（Western blot）检测 TLR2和 TLR4的表达水平。结果不同浓度 dextrose 腹膜透析液作用24 h 对腹膜间皮细胞 TLR2和 TLR4的表达无明显影响。作用48 h ，1．50％ dextrose 组、2．50％ dextrose 组、4．25％ dex-trose 组 TLR2分别降低（5．5±2．8）％、（31．4±7．5）％、（54．9±1．9）％，TLR4分别降低（32．9±17．6）％、（47．7±13．5）％、（66．4±13．5）％；作用72 h ，1．50％ dextrose 组、2．50％ dextrose 组、4．25％ dextrose 组 TLR2表达分别降低（29．4±14．7）％、（38．9±9．9）％、（63．5±16．5）％，TLR4表达分别降低（59．5±16．8）％、（63．1±9．5）％、（79．2±14．0）％；7．5％ icodextrin 组TLR2和 TLR4表达与阴性对照组比较差异无统计学意义（P＞0．05）。结论 dextrose 透析液下调 HM rSV5 TLR2和 TLR4的表达；icodextrin 透析液对 TLR2和 TLR4的表达无显著影响。

Effect of peritoneal dialysis fluids on the expression of TLR2 and TLR4 on peritoneal mesothelial cells

Objective To investigate the effect of glucose-based peritoneal dialysis fluids and icodextrin-based peritoneal dial-ysis fluids on the expression of TLR2 and TLR4 on huamn peritoneal mesothelial cells .Methods Human peritoneal mesothelial cell line 5 - 10 generations(HMrSV5) was cultured in DMEM /F12 medium supplemented with 10% (v/v) fetal calf serum (FCS) .Cell viability and cell proliferation were assessed using M TT method .The experiment were divided into 5 different groups :group A (control group) ,1 .5% dextrose group ,2 .5% dextrose group ,4 .25% dextrose group and 7 .5% Lcodextrin group .Icodextrin group (aikau dextrin) ,TLR2 and TLR4 expression were detected by Western blot .Results Treatment with different concentrations of glucose-based peritoneal dialysis fluids for 24 h did not affect the expression of TLR2 and TLR4 protein .In addition ,after stimula-tion for 48 h ,1 .5% dextrose ,2 .5% dextrose ,4 .25% dextrose decreased TLR2 expression by (5 .5 ± 2 .8)% ,(31 .4 ± 7 .5)% , (54 .9 ± 1 .9)% respectively ,TLR4 expression by (32 .9 ± 17 .6)% ,(47 .7 ± 13 .5)% ,(66 .4 ± 13 .5)% respectively .Stimulation for 72 h ,decreased TLR2 expression by (29 .4 ± 14 .7)% ,(38 .9 ± 9 .9)% ,(63 .5 ± 16 .5)% respectively ,TLR4 expression by(59 .5 ± 16 .8)% ,(63 .1 ± 9 .5)% ,(79 .2 ± 14 .0)% respectively .There was no significant change in TLR2 and TLR4 protein expression on 7 .5% icodextrin group .Conclusion Glucose-based peritoneal dialysis fluids ,but not icodextrin-based peritoneal dialysis fluids downregulates expression of TLR2 and TLR4 by HM rSV5 .