四溴双酚A的鲫鱼血清蛋白生物标志物研究

以鲫鱼为供试生物,对四溴双酚A(TBBPA)的急性毒性、血清蛋白潜在生物标志物以及相应的毒性靶器官组织病理进行了研究,结果表明TBBPA对鲫鱼96 h的半致死浓度LC50是3.13 mg/L,TBBPA诱导下鲫鱼血清蛋白可区分为11个组分,各组分随时间和浓度的变化规律存在差异。组分11条带清晰,表达量变化幅度最大,在低浓度TBBPA暴露下表达量先降低后升高,第16天达到最高;高浓度时表达量在第2天达到最高。组分11的分子量为24 kDa,可能为鲫鱼斯坦尼小体(CS)中降血钙因子的解聚物。组织病理切片结果显示,鲫鱼肝脏和肾脏均表现出时间-剂量依赖性,且与组分11的诱导差异性表达呈现相应的病理损伤。因此,鲫鱼血清蛋白组分11对TBBPA的诱导具有浓度和时间响应敏感性,且易于识别和鉴定,可作为TBBPA暴露的鲫鱼血清蛋白潜在生物标志物。

Biomarkers of Serum Protein to Tetrabromobisphenol A in Carassius auratus

Carassius auratus as test subject,acute toxicity of tetrabromobisphenol A(TBBPA),potential biomarkers of serum protein and toxicity target organ histopathology were studied.Results showed that 96 h-LC 50 of Carassius auratus exposed to TBBPA was 3.13 mg/L,and serum proteins of Carassius auratus can be divided into 11 components exposure to different concentrations TBBPA at different times.There were differences within protein components with time and concentration existed.Component 11 with clear bands and the largest amplitude first decreased then increased,and reached the highest value at low concentration on the 16th day,while it reached the highest value on the 2nd day at high concentration.The molecular weight of Component 11 was 24 kDa,may be the solution of polymer of calcitonin factor in coriouscles of stannius of Carassius auratus.The histopathological results indicated that Carassius auratus liver and kidney showed time-dose-dependent of pathological damage synchronously.The protein component 11 which responds sensitively on the concentration and time of TBBPPA inducing as well as easier to be recognized and identified can be used as the potential biomarkers in Carassius auratus exposed to TBBPA.