中文摘要：

目的 探讨氟和砷对暴露人群骨代谢的影响.方法 2006年选择贵州省兴仁县雨樟镇交乐村152例氟砷联合暴露者以及位于交乐村约13 km无高氟高砷暴露史59例对照作为研究对象.分别检测尿氟、尿砷及骨代谢效应指标尿羟脯氨酸（UHYP）和尿Ⅰ型胶原交联氨基末端肽（UNTX）、骨强度指数（STI）.结果 氟对UHYP、UNTX的主效应均有统计学意义（F=9.785、4.225,P均〈0.01）,对STI的主效应无统计学意义（F=0.183,P〉0.05）.砷对UNTX的主效应有统计学意义（F=2.660,P〈0.05）,对UHYP、STI的主效应无统计学意义（F=2.012、0.183,P均〉0.05）.氟、砷的交互作用对UNTX有统计学意义（F=2.429,P〈0.01）,但氟、砷交互作用对UHYP和STI无统计学意义（F=1.218、1.001,P均〉0.05）.结论 氟可影响胶原代谢及骨吸收,砷主要影响骨吸收.氟砷混合暴露时对骨吸收影响较显著.对氟、砷暴露人群进行健康监测时,UNTX可作为评价氟砷污染致暴露人群骨代谢交互作用的生物学标志.

英文摘要：

Objective To explore the effect of fluoride and arsenic pollution on bone metabolism in exposed population. Methods One hundred and fifty-two fluoride and arsenic exposed people were selected from Jiaole village, Yuzhang town, Xingron county, Guizhou province in 2006, and 59 not exposed people from Daguoduo village 13 km away from Jiaole village were selected as control. Urinary fluorine（UF）, urinary arsenic （UAs）, urinary hydroxyproline （UHYP）, cross-linked N-telopeptides of type I collagen （UNTX） and bone strength index（STI） were detected. Results The main effect of fluoride on UHYP and UNTX were statistically significant （F = 9.785, 4.225, P 〈 0.01 ）, but was not significant on STI（F = 0.183, P 〉 0.05）. The main effect of arsenic on UNTX was statistically significant （F = 2.660, P 〈 0.05 ）, but was not significant on UHYP and STI（F = 2.012, 0.183,all P 〉 0.05）. The interaction between fluoride and arsenic on UNTX was statistically significant （F= 2.429, P 〈0.01）, but was not significant on UHYP and STI（F= 1.218, 1.001, all P〉 0.05）. Conclusions Fluoride exposure can affect the metabolism of collagen and bone resorption, and Arsenic exposure main affect bone resorption, fluoride and arsenic co-exposure have more significant effect on bone resorption. UNTX may be used as biological biomarker of bone metabolism for population co-exposed to fluoride and arsenic in health monitoring.