摘要
目的阐明饮水氟浓度与儿童肝损害的剂量-效应关系,并观察饮水氟浓度相同的地区氟斑牙患者和高氟负荷人群之间肝功能有无差异。方法根据饮水氟浓度(<1.0mg/L,1.0～2.0mg/L,2.0～3.0mg/L,>3.0mg/L)和是否患氟斑牙情况将210名儿童分为7组,测定各组人群尿和血清氟浓度,血清总蛋白(TP)和白蛋白(ALB)浓度,血清丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)和乳酸脱氢酶(LDH)活力。结果氟中毒病区人群尿和血清氟浓度均高于对照组,并随饮水氟浓度增加而升高;各组人群之间血清TP和ALB浓度及ALT和AST活力差异无统计学意义;饮水氟浓度2.15～2.96mg/L地区的氟斑牙患者及饮水氟浓度>3.0mg/L地区的高氟负荷人群和氟斑牙患者血清LDH活力均显著高于对照组,并随饮水氟浓度增加而升高;且这两个地区氟斑牙患者组的血清LDH活力均显著高于高氟负荷组。结论饮用氟浓度>2.0mg/L的水可能会导致儿童肝损害,且损害程度随饮水氟浓度增加而增强;肝损害程度不仅取决于饮水氟浓度,还与是否患氟斑牙有关。
Objective To explore the dose-effect relationship between water fluoride levels and hepatic damage in children and observe the difference in hepatic function between high-loaded fluoride people and dental fluorosis people in the same water fluoride level region. Methods 210 children were selected and divided into seven groups according to drinking water fluoride concentrations and whether they suffered from dental fluorosis. Urine and serum fluoride content total protein TP and albumin ALB content and activities of ALT AST and LDH in serum were determined. Results Both of urine and serum fluoride of high fluoride people and dental fluorosis people were higher than those of the control moreover fluoride contents in urine and serum increased gradually with the increase of fluoride level in drinking water. No significant differences were seen in serum TP ALB ALT and AST levels among groups. Serum LDH activities significantly increased in dental fluorosis people from area of 2.58 mg/L fluoride in drinking water and in two groups from area of 4.51 mg/L fluoride. Moreover there was an obvious dose-effect relationship between the drinking water fluoride concentration and LDH activity. Conclusion If the concentration of fluoride in drinking water exceed 2.0 mg/L it will cause hepatic damage in children with an remarkable dose-effect relationship. The degree of hepatic damage is related to not only water fluoride level but also the condition with or without dental fluorosis.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2005年第4期243-245,共3页
Journal of Environment and Health
基金
国家自然科学基金资助项目(30271155)
关键词
水污染
氟
儿童
肝
Water pollution Fluoride Children Liver
