Nitrates Do Not Affect Bone Density or Bone Turnover in Postmenopausal Women: A Randomized Controlled Trial

被引:9
作者
Bolland, Mark J. [1 ]
House, Meaghan E. [1 ]
Horne, Anne M. [1 ]
Pinel, Veronica [1 ]
Gamble, Greg D. [1 ]
Grey, Andrew [1 ]
Reid, Ian R. [1 ]
机构
[1] Univ Auckland, Dept Med, Auckland, New Zealand
关键词
BONE DENSITY; BONE TURNOVER; NITRATE; OSTEOPENIA; OSTEOPOROSIS; NITROGLYCERIN THERAPY; MINERAL DENSITY; OSTEOPOROSIS; PREVENTION;
D O I
10.1002/jbmr.3982
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Organic nitrates have been reported to have significant effects on bone mineral density (BMD) and bone turnover in previous clinical trials. However, results are inconsistent and some trials with strikingly positive results have been retracted because of scientific misconduct. As preparation for a potential fracture prevention study, we set out to determine the lowest effective dose and the most effective and acceptable nitrate preparation. We undertook a 1-year, double-blind, randomized, placebo-controlled trial of three different nitrate preparations and two different doses in osteopenic postmenopausal women, with a planned 1-year observational extension. The primary endpoint was change in BMD at the lumbar spine, and secondary endpoints included BMD changes at other sites, changes in bone turnover markers, and adverse events. A total of 240 eligible women who tolerated low-dose oral nitrate treatment in a 2-week run-in period were randomized to five different treatment groups or placebo. Over 12 months, there were no statistically significant between-group differences in changes in BMD at any site and no consistent differences in bone turnover markers. When the active treatment groups were pooled, there were also no differences in changes in BMD or bone turnover markers between nitrate treatment and placebo. Eighty-eight (27%) women withdrew during the run-in phase, with the majority because of nitrate-induced headache, and 41 of 200 (21%) women randomized to nitrate treatment withdrew or stopped study medication during the 1-year study compared with 1 of 40 (2.5%) in the placebo group. In summary, organic nitrates do not have clinically relevant effects on BMD or bone turnover in postmenopausal women and were poorly tolerated. These results call into question the validity of previous clinical research reporting large positive effects of nitrates on BMD and bone turnover. (c) 2020 American Society for Bone and Mineral Research.
引用
收藏
页码:1040 / 1047
页数:8
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