RESUMO
Objective To investigate the serum levels of heat shock protein 70 (HSP70) in uremic patients with different dialysis ages.Methods Ninety-two maintenance haemodialysis patients were divided into short-term group(from three months to 2 years,n =32),median-term group(from 2 to 5 years,n =37) and longterm group(more than 5 years,n =23) according to different dialysis ages.Enzyme-linked immunosorbent assay (ELISA) was used to measure the serum levels of HSP70 before and after haemodialysis in each group.Results The semm levels of HSP70 had significant difference both in median-term group and long-term group before and after haemodialysis(median-term group:(54.94 + 39.21) μg/L vs (69.72 + 39.90) μg/L,t =-2.068,P =0.047 ;long-term group:(46.17 +34.63) μg/L vs (74.07 ±41.11) μg/L,t =-2.814,P =0.010).But there was no statistics difference on the serum levels of HSP70 before and after haemodialysis in the short-term group((70.42 ±38.30) μg/L vs (62.89 ±43.01) μg/L,t =0.870,P =0.390).Conclnsion Haemodialysis patients with more stress protection ability are likely to obtain long term survival.