Hair Selenium Levels of School Children in Kashin-Beck Disease Endemic Areas in Tibet, China
Hair Selenium Levels of School Children in Kashin-Beck Disease Endemic Areas in Tibet, China
复制标题
中国西藏大骨节病流行区学童头发硒水平
DOI：
10.1007/s12011-015-0333-4
复制
发表时间：
2015-11-01
影响因子：
3.9
通讯作者：
Deji, Yangzong
中科院分区：
文献类型：
--
作者：
Chen, Zhuo;Li, Hairong;Deji, Yangzong
Previous studies have shown that the selenium (Se) deficiency is an important factor for the etiology of Kashin-Beck disease (KBD). Although KBD is presently controlled in most regions of China, it is still active in the Tibetan Plateau. The present study aimed to assess the nutritional status of selenium in school children by using the Se level in hair as a biomarker in KBD endemic areas of Lhasa in Tibet, China. Hair samples of 155 school children aged 6-15 years were collected in both KBD areas and non-KBD areas of Lhasa in 2013. The Se level in the hair samples was determined by inductive coupled plasma mass spectrometry (ICP-MS). The average concentration of Se in children's hair was 0.232 mu g/g in KBD areas of Lhasa, which was significantly higher than the data reported decades ago. A significant difference in hair Se was observed between the boys (0.255 mu g/g) and the girls (0.222 mu g/g) in the studied KBD areas (P < 0.01, Mann-Whitney U test), but hair Se did not vary by age or region. School children in KBD endemic areas in Lhasa likely have improved Se status as a result of high Se content staple food substitution with the enforcement of Free Education Policy and Nutrition Improvement Plan in Tibet. Nevertheless, there were still 20.3 % of students with low Se status (hair Se < 0.20 mu g/g), which showed that Se status of school children was also partly affected by low Se environment in KBD endemic areas of Lhasa.
