【摘要】 目的:探讨在不同海拔的高原环境下,拉萨与那曲地区藏族青少年血清钙(Ca)和无机磷(P)的特点及其差异。方法:采用分层整群抽样的方法,选取拉萨和那曲地区的12~18岁健康藏族青少年共1458人,测定身高及血清钙(偶氮胂III法)、无机磷(磷钼酸比色法)的含量。结果:①拉萨藏族青少年血清钙为(2.86±0.17)mmol/L,磷为(1.61±0.29)mmol/L,其水平均显著高于那曲地区(P<0.01),即血清钙为(2.24±0.18)mmol/L,磷为(1.31±0.20)mmol/L;②两个地区血清Ca无年龄差异(P>0.05),血清P与[Ca].[P]随年龄增长水平降低(P<0.05),那曲男性在16岁以后,女性在17岁以后,[Ca].[P]低于2.82;③血清[Ca].[P]水平均与身高密切相关(P<0.01)。结论:拉萨与那曲地区藏族青少年血清钙比较稳定,无机磷水平与年龄显著相关,两个海拔地区其规律有一定的差异。更多还原

【Abstract】 Objective: To study the characteristics and differences of serum total calcium(Ca) and inorganic phosphate(P)levels in Tibetan adolescents living on Lhasa and Naqu.Methods: 1458 healthy Tibetan adolescents in Lhasa and Naqu aged 12~18 years were selected in the study,their height and the levels of Ca and P were tested.Results: The Ca levels of Lhasa adolescents were(2.86±0.17)mmol/L,and P levels were(1.61±0.29)mmol/L.The Ca and P levels of Lhasa adolescents were significanty higher than those Naqu adolescents(P<0.01)[Ca:(2.24±0.18)mmol/L,P:(1.31±0.20)mmol/L].In both areas,no affection was found for serum Ca by age factor,but the levels of P declined with age(P<0.05).·[P] were lower 2.82of boys after 16 and girls after 17 years in Naqu.Positive correlativity was observed ·[P] with height(r=-0.25,-0.35,P<0.01).Conclusion: Serum Ca were not affected by age in Tibetan adolescent in Lhasa and Naqu,but P are closely associated with age,in both areas,the change of serumCa and P were difference.更多还原