[A randomized double-blinded placebo-controlled clinical trial of minodronate tablet in postmenopausal Chinese women with osteoporosis].

Objective: To verify the efficacy and safety of daily oral minodronate in postmenopausal women with established osteoporosis. Methods: In this randomized, double-blinded, placebo-controlled trial, 262 postmenopausal women were enrolled. Patients were randomized to receive daily oral minodronate 1 mg with supplements of 500 mg calcium and 200 U vitamin D3 (n=130) or placebo (n=132) with daily supplements of 500 mg calcium and 200 U vitamin D3, for 48 weeks. The primary endpoint was the average bone mineral density (BMD) change in the lumbar vertebrae 48 weeks post-treatment. Secondary outcome measures was the incidence of vertebral fractures. Safety assessments included the rate of adverse events. Results: At the end of 48 weeks treatment, the average BMD change rate from baseline were: full analysis set results: (3.52±4.82)% in the minodronate group and (2.00±5.74)% in the placebo group; per-protocol set results: (3.99±5.05)% in the minodronate group and (2.07±6.20)% in the placebo group; the differences were all significant (all P<0.05). Vertebral fracture occured in 3 patients (2.3%, 3/132) in the placebo group, and 1 case (0.8%, 1/130) in the minodronate group (P>0.05). The incidence of adverse events was 71.5% (93/130) in the minodronate group and 78.0% (103/132) in the placebo group (P>0.05). Conclusion: Minodronate is effective and safe in the treatment of postmenopausal osteoporosis without severe side effects.目的： 评价国产米诺膦酸片治疗绝经后骨质疏松症患者的有效性和安全性。 方法： 采用多中心、随机、双盲、平行对照研究，将262例绝经后骨质疏松症患者采用中央随机化分为试验组（130例）和对照组（132例），以碳酸钙D3咀嚼片为基础用药，试验组给予国产米诺膦酸片每天1 mg，对照组给予安慰剂每天1片，试验疗程共48周。观察两组患者治疗前后腰椎平均骨密度变化率、椎体骨折发生率以及不良事件和不良反应发生情况。 结果： 治疗48周，受试者腰椎平均骨密度较基线的变化率，全分析集结果：试验组为（3.52±4.82）%，对照组为（2.00±5.74）%；符合方案分析集结果：试验组为（3.99±5.05）%，对照组为（2.07±6.20）%；在全分析集和符合方案分析集，两组分别比较，差异均有统计学意义（P均<0.05）。治疗48周，椎体骨折发生率对照组为2.3%（3/132），试验组为0.8%（1/130），差异无统计学意义（P>0.05）。用药48周不良事件发生率试验组与对照组分别为71.5%（93/130）、78.0%（103/132），不良反应发生率试验组与对照组分别为23.8%（31/130）、28.8%（38/132），两组分别比较，差异均无统计学意义（P均>0.05）。 结论： 国产米诺膦酸片治疗绝经后骨质疏松症安全有效。.