阿仑膦酸钠治疗男性骨质疏松的随访研究

目的 探讨阿仑膦酸钠治疗男性骨质疏松对骨转换标记物的影响和1年随访后骨密度变化. 方法 78例男性骨质疏松患者.年龄60～82岁,应用阿仑膦酸钠每周70 mg,治疗12个月.治疗前和治疗后3个月、12个月分别测定血骨钙素(BGP)和Ⅰ型胶原吡啶交联终肽(ICTP)和血骨特异碱性磷酸酶(BSALP).腰椎和股骨颈骨密度测定采用双能X线骨密度仪,测量部位为1～4腰椎(L1-4)后前位和左侧全髋(股骨颈、大转子、Ward's三角、股骨干). 结果 阿仑膦酸钠治疗3个月、12个月后,血ICTP、BGP和BSALP分别下降45.8%和51.6%、32.0%和37.5%、35.3%和39.9%.治疗后12个月L1-4骨密度提高11.8%,股骨颈骨密度提高11.4%.治疗后3个月、12个月血ICTP下降与L1-4骨密度提高呈正相关(r分别为0.28、0.295,P<0.05和P<0.01),与治疗后12个月股骨颈骨密度提高呈正相关(r分别为0.262、0.333,P<0.05和P<0.01);血BGP与治疗后12个月LI1-4骨密度提高呈正相关(r分别为0.322、0.401,均为P<0.01),与治疗后12个月股骨颈骨密度呈正相关(r分别为0.277,0.284,均为P<0.05);治疗后3个月、12个月血BSALP下降与治疗后12个月L1-4骨密度提高呈正相关(r分别为0.133、0.231,均为P<0.05),与治疗后12个月股骨颈骨密度提高呈正相关(r分别为0.248、0.317,均为P<0.01). 结论 骨转换标记物BGP、ICTP和BSALP早期变化可预测阿仑膦酸钠治疗男性骨质疏松患者1年后骨密度的变化.

The follow-up study of therapeutic effects of alendronate sodium on osteoporosis

Objective To study early changes in biochemical markers of bone turnover for prodicting the bone mineral density(BMD) response to alendronate therapy in Chinese men with osteoporosis. Methods Seventy-eight men aged 60 to 82 years with osteoporosis [mean age (69.8 ±11.8) years]were treated with alendronate sodium 70 mg/week for 12 months. Serum bone gla-protein (BGP) and serum pyridinoline-eross-linked earboxyterminal telopeptide of type I collagen (ICTP) level were measured by chemiluminescence (equipment is Roche E170). Serum BGP, ICTP and BSALP levels were measured before and 3 months and 12 months after treatment. BMD in lumbar spine and femoral neck were measured with dual energy X-ray absorptiometry (GE PRODIGY Inc. ) at L1-4 and at the left hip(total hip,trochanter,Ward's area and femoral neck)before and 12 months after treatment. Results After 3-months and 12-months treatment, the percent reductions of serum ICTP levels were 45.8% and 51.6%, serum BGP level 32.0% and 37.5%, serum BSALP level 35. 3% and 39.9% ,respectively. After 12-months treatment, the percent increase of lumbar BMD was 11.8%, femoral neck BMD 11.4 %. The percent reductions of serum ICTP level at months 3 and 12 after treatment were positively correlated to the percent increase of lumbar BMD (r=0.28, 0.295,P <0.05 and P<0.01)and of fermoral neck BMD at 12 months after treatment(r=0.262, 0.333, P＜0.05 and P<0.01)respectively. The percent reductions of serum BGP level at months 3 and 12 after treatment were positively correlated to the percent increase of lumbar BMD (r=0. 322, 0.401,all P<0.01) and of fermoral neck BMD at 12 months after treatment (r=0.277,0.284, all P＜0.05)respectively. The percent reductions of serum BSALP level at months 3 and 12 after treatment were positively correlated to the percent increase of lumbar BMD (r=0.133,0.231,all P＜0.05) and of fermoral neck BMD at 12 months after treatment(r=0.248, 0.317, all P＜0.01)respectively.Conclusions Early changes in biochemical markers of bone turnover rates can predict BMD response to alendronate in Chinese men with osteoporosis.