摘要目的 研究燃煤型氟中毒病区人群外周血谷胱甘肽硫转移酶(GST)基因的mRNA表达,了解氟中毒地区经综合干预后的效果.方法 采集贵州省毕节市燃煤型氟中毒病区患者(氟中毒组)和经综合干预后的患者(氟中毒干预组)外周血样本各50例,以非病区健康人外周血标本50例作为对照,Trizol-酚-氯仿一步法提取总RNA,以SYBR Green I为荧光介质.采用实时荧光定量PCR技术测定外周血细胞GST mRNA表达水平.结果 氟中毒组、氟中毒干预组和对照组外周血细胞GST mRNA表达分别为38.28±27.22、70.56±37.23和103.46±46.62,组间比较差异有统计学意义(F=3.75,P<0.05).氟中毒组与氟中毒干预组GsT mRNA表达水平较对照组降低(P均<0.05),氟中毒干预组GST mRNA表达水平较氟中毒组升高(P<0.05).结论 燃煤型氟中毒能降低GST在外周血中的表达,经综合干预后可使GST表达有所回升.

abstractsObjective To investigate expression of glutathione S-transferase(GST) mRNA in peripheral blood of the population in coal-burning fluorosis area and to evaluate the effect of comprehensive control intervention. Methods Fifty samples of peripheral blood from patients in the coal-buring fluorosis area in Bijie county of Guizhou province were selected as fluorasis group and 50 samples of peripheral blood from patients in area with comprehensive management were selected as intervention group, respectively. Fifty samples from non-endemic fluorosis area were selected as the control group. Total RNA from blood was extracted and purified by the Trizol- Phenol-Chloroform one-step method. Expression of GST mRNA was detected by using SYBR Green I real-time fluorescence quantitative PCR. Results The data of GST mRNA in fluorosis group, intervention group and control group was 38.28±27.22,70.56±37.23 and 103.46 ± 46.62, respectively. There was a significant difference between the groups(F = 3.75, P < 0.05). Decreased expression of GST mRNA in fluorosis group and intervention group as compare to control was detected(all P < 0.05), and the expression of GST mRNA in intervention group was higher than that in fluorosis group(P < 0.05). Conclusion Coal-burning fluorosis possibly led to the decreased expression of GST mRNA in peripheral blood, and comprehensive control maybe prevent the decreased expression of GST in mRNA level.