Am J Clin Nutr:异黄酮制剂对女性雌激素缺乏引起的骨质流失有益吗?

2017-09-19 徐晓涵 环球医学

异黄酮是一种植物性雌性激素,对机体的调节有着显着效果。2017年9月,发表在《Am J Clin Nutr》上的一项研究,调查了异黄酮制剂对围绝经和绝经后妇女雌激素缺乏导致的骨吸收的影响。研究结果表明,异黄酮治疗对女性雌激素缺乏骨质流失具有一定的疗效,但跟其糖苷配基形式有关。

异黄酮是一种植物性雌性激素,对机体的调节有着显着效果。2017年9月,发表在《Am J Clin Nutr》上的一项研究,调查了异黄酮制剂对围绝经和绝经后妇女雌激素缺乏导致的骨吸收的影响。研究结果表明,异黄酮治疗对女性雌激素缺乏骨质流失具有一定的疗效,但跟其糖苷配基形式有关。

背景:年龄相关的雌激素缺乏导致骨吸收加速。有证据表明,通过选择性雌激素受体调节,异黄酮可能对雌激素缺乏的骨质流失发挥有益作用。异黄酮苷元比其糖苷对应物显示出更高的生物利用度,因此可能具有更高的效力。

目的:总结证据,研究人员对围绝经和绝经后妇女中异黄酮治疗和骨密度(BMD)损失进行了系统评价和meta分析。

设计:系统地检索EMBASE和PubMed数据库,纳入评估异黄酮疗法用于治疗雌激素缺乏妇女腰椎和股骨颈BMD损失的随机对照试验(RCTs)。使用随机效应模型对提供异黄酮作为糖苷配基进行腰椎和股骨颈的所有研究进行单独的meta分析。

结果
:meta分析共纳入了26项RCTs(n = 2652)。在腰椎,异黄酮治疗与对照组相比,BMD变化的加权平均差异(WMD)显着高0.01(95%CI:0.01,0.02,P<0.00001)。对于股骨颈(18项RCTs,n = 1604),异黄酮治疗与对照相比, BMD变化的WMD显着高0.01(95%CI:0.00,0.02,P<0.01)。当孤立治疗组提供异黄酮苷元的研究时,与对照组相比,平均效果进一步显着增加,在脊柱(5项RCTs,n = 682)增加0.04(P<0.00001; 95%CI:0.02,0.05),在股骨颈(4项RCTs,n = 524)增加0.03(P<0.05; 95%CI:0.00,0.06)。当只研究主要含有异黄酮糖苷的制剂时,对于骨质流失保护的作用消失。

结论:异黄酮治疗对女性雌激素缺乏骨质流失具有适度的疗效。该效果似乎取决于异黄酮治疗是否为糖苷配基形式;研究人员得出结论,异黄酮苷元或许可以增强抗骨质流失的有益效果。

原始出处:
Lambert MNT, Hu LM, Jeppesen PB.et al.A systematic review and meta-analysis of the effects of isoflavone formulations against estrogen-deficient bone resorption in peri- and postmenopausal women.Am J Clin Nutr. 2017 Sep;106(3):801-811. doi: 10.3945/ajcn.116.151464. Epub 2017 Aug 2.

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    2018-03-28 fengyi821
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    2017-09-21 Eleven17
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    2017-09-20 明天会更好!

    很好!学习过了!

    0