摘要
背景:中国北方地区老年人维生素D营养状态存在季节变化,冬春季维生素D缺乏严重。目的:分析沈阳市老年人冬季维生素D缺乏对骨量丢失的影响。方法:随机选择沈阳市60岁以上汉族健康老年人100名,于2000-03检测受试者血浆中25羟维生素D、甲状旁腺激素、钙和磷,清晨空腹2h尿中脱氧吡啶、钙、磷、肌酐,2000-03/2005-03两次检测髋部骨密度。结果与结论:基线时,血浆25羟维生素D浓度为(31.0±12.30)nmol/L,40%受试者低于25nmol/L;血浆甲状旁腺激素水平为(29.4±11.5)ng/L,血浆25羟维生素D浓度低于25nmol/L者甲状旁腺激素水平为(34.6±13.5)ng/L,血浆25羟维生素D浓度与甲状旁腺激素呈负相关(r=-0.479,P<0.0001)。5年后股骨颈骨丢失率为(3.05±4.07)%,大转子为(1.46±5.02)%,经体质量和身高变化率校正后,股骨颈骨丢失率与基线血浆25羟维生素D浓度呈负相关(r=-2.3,P=0.02),股骨颈骨丢失率基线血浆25羟维生素D浓度≤25nmol/L者高于浓度>25nmol/L者103%(F=7.2062,P=0.0085)。其他检测指标与骨丢失无显著相关性。说明老年人群冬季维生素D缺乏严重,维生素D缺乏促进骨量丢失,影响骨健康。
BACKGROUND:There are seasonal variations in vitamin D status of older people in northern China.Vitamin D status of older people is deficient in winter and spring.OBJECTIVE:To evaluate the effect of vitamin D deficiency in winter on bone loss in elderly people in Shenyang.METHODS:100 healthy Han volunteers over 60 years old living in Shenyang were selected.Plasma 25-hydroxyvitamin D [25(OH)D],parathyroid hormone(PTH),osteocalcin,calcium and phosphate,overnight fasting urine free deoxypyridinoline,calcium,phosphate and creatinine were analyzed in March 2000.Hip bone mineral density(BMD) was measured in March 2000 and in March 2005.RESULTS AND CONCLUSION:At baseline,mean plasma 25(OH)D concentration was(31.0±12.3) nmol/L;25(OH)D concentration of 40% of subjects was 25 nmol/L;mean PTH was(29.4±11.5) ng/L for all subjects and(34.6 ± 13.5) ng/L for the subjects with 25(OH)D concentration 25 nmol/L;plasma 25(OH)D concentration was correlated negatively with PTH concentration(r=-0.479,P 0.000 1).After 5 years,mean bone loss rate was(3.05±4.07)% at the femoral neck and(1.46±5.02)% at the trochanter.Bone loss rate at femoral neck was negatively correlated with plasma 25(OH)D concentration at baseline(r=-2.3,P=0.02) after adjustment for weight,height and age.Bone loss rate at femoral neck for the subjects with plasma 25(OH)D concentration 25nmol/L was 103% higher than that of the subjects with plasma 25(OH)D concentrations 25 nmol/L(F=7.206 2,P=0.008 5).No correlation was found between other markers and bone loss rate.In older populations who generally have a low vitamin D status,vitamin D deficiency is negatively contributed to their bone loss.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2011年第26期4907-4910,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
基金
瑞士雀巢营养基金项目(200012):中国老年人维生素K和维生素D营养状态与骨健康
辽宁省教育厅高等学校科学研究项目(20391148):老年人维生素K和维生素D营养状态与骨密度~~