CS2作业工人红细胞膜收缩蛋白初探

目的　观察作业工人长期接触二硫化碳 (CS2 )对其红细胞膜收缩蛋白的影响。方法　气相色谱法测定作业场所CS2 浓度 ;分离 16名工人红细胞膜 (接触、对照各 8人 ) ,采用十二烷基硫酸钠 -聚丙烯酰胺凝胶电泳 (SDS PAGE)法分析红细胞膜蛋白谱。结果　车间空气CS2 浓度 (TWA)为 0～ 8.98mg/m3。CS2 接触工人红细胞膜收缩蛋白百分含量 (34.48% )高于对照工人 (2 6 .18% ) (t =5 .92 0 ,P <0 .0 0 1) ,CS2 浓度 (TWA)与收缩蛋白含量呈正相关 (r=0 .85 9,R2 =0 .738,P <0 .0 0 1) ,接触指数 (EI)与收缩蛋白含量也呈正相关 (r=0 .713,R2 =0 .5 0 8,P =0 .0 0 2 )。其中 2名长工龄高浓度CS2接触工人红细胞膜图谱在高相对分子质量区有可疑异常区带形成。结论　长期接触CS2 作业工人红细胞膜蛋白电泳图谱出现异常 ,提示该指标有希望成为CS2 接触工人的分子水平接触 -效应生物标志物。     

Preliminary evaluation of urinary 2-thio-thiazolidine-4-carboxylic-acid (TTCA) levels as a test for exposure to carbon disulfide

Summary The exposure to carbon disulfide of workers in charge of different jobs in a Belgian viscose plant was measured by means of personal monitoring of the inhaled air and by quantitative assay of 2-thio-thiazolidine-4-carboxylic acid (TTCA) in urine.It was found that the atmospheric carbon disulfide concentration varied considerably among different jobs, among different individuals doing the same jobs and for the same individuals in the course of the working period.The 2-thio-thiazolidine-4-carboxylic-acid levels increased markedly during the exposure. The correlation between individual personal monitoring results and the increase TTCA levels was found to be statistically significant.Supported by the Nationaal Fonds voor Geneeskundig Wetenschappelijk Onderzoek under Grant no. 3.0013.81