JBMR:维生素D代谢率与老年人骨密度和骨折风险的变化有关

2021-10-25 从医路漫漫 MedSci原创

背景与目的:最近的研究表明,25-羟维生素D (25(OH)D)可能不是提示骨骼健康的生物标志物,部分原因是测量的水平同时包含了蛋白质结合和游离维生素D。

背景与目的:最近的研究表明,25-羟维生素D (25(OH)D)可能不是提示骨骼健康的生物标志物,部分原因是测量的水平同时包含了蛋白质结合和游离维生素D。其分解产物(24,25-二羟基维生素D[24,25(OH)2D])与25(OH)D(维生素D代谢物比率[VMR])的比率可能提供更多有关维生素D储存充足的信息,不受维生素D结合蛋白浓度的影响。我们评估了VMR或25(OH)D是否与老年人骨丢失和骨折风险更密切相关。

结果:我们对786名年龄在70 - 79岁的社区居住的成年人进行了一项回顾性队列研究,他们参加了健康老龄化和身体组成研究。我们的主要结果是每年的骨密度变化和意外骨折。这些参与者的平均年龄为75±3岁,49%为女性,42%为黑人,23%估计肾小球滤过率(eGFR) <60 mL/mL/1.73m2。在完全调整的模型中,VMR降低50%与髋关节总骨密度(BMD)更快下降0.3%(0.2%,0.6%)相关。我们发现胸椎和腰椎骨密度也有相似的关系。相比之下,25(OH) d3浓度与BMD的纵向变化无关。平均随访10年,共发生178例骨折。VMR每降低50%,骨折风险增加49%(95%可信区间[CI] 1.06, 2.08),而25(OH) d3浓度较低与骨折风险没有显著相关性(风险比[HR]每降低50% 1.07[0.80,1.43])。

表1 753名健康ABC队列参与者中维生素D代谢物和VMR与全髋BMD年度变化百分比的关系

表2 788名健康ABC队列参与者中维生素D代谢物和VMR与骨折风险的关系

图 描述维生素D代谢物和VMR与骨折风险关系的样条函数。样条函数不包括两端最大的2.5%。实线表示危险比,虚线表示95%的置信区间。包含最大2.5%值的样条函数包含在插图中。

结论:在一个多样化的社区居住的老年人队列中,与25(OH)D3相比,较低的VMR与骨密度损失和骨折风险更密切相关。需要试验来评估VMR作为骨密度恶化和骨折风险人群的治疗靶点。

原文出处:

Ginsberg C,  Hoofnagle AN,  Katz R,et al.The Vitamin D Metabolite Ratio is Associated with Changes in Bone Density and Fracture Risk in Older Adults.J Bone Miner Res 2021 Aug 23

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1064264, encodeId=c5c91064264e0, content=学习了,认认真真好好, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=46272141840, createdName=田黎, createdTime=Wed Oct 27 07:20:41 CST 2021, time=2021-10-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1064172, encodeId=f58e10641e220, content=认真学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Tue Oct 26 19:39:35 CST 2021, time=2021-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1064163, encodeId=87b7106416344, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210724/725901dc0ed249ebba9d096aacddde3f/a89b874e17434adb82b0c2dff5f374f1.jpg, createdBy=c0225555986, createdName=@gxl, createdTime=Tue Oct 26 18:55:19 CST 2021, time=2021-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1063732, encodeId=50f71063e328d, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a4c05646260, createdName=ms9000001361057378, createdTime=Mon Oct 25 11:43:22 CST 2021, time=2021-10-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1063730, encodeId=2f601063e30a9, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210125/9e5998de75824d5f8a8e76ad7ca79433/206fffa392c54ae5a60152c166e2f362.jpg, createdBy=ab0d5455599, createdName=二爽, createdTime=Mon Oct 25 11:37:56 CST 2021, time=2021-10-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1390442, encodeId=310d1390442cd, content=<a href='/topic/show?id=22c6101695c9' target=_blank style='color:#2F92EE;'>#骨折风险#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101695, encryptionId=22c6101695c9, topicName=骨折风险)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKnILSXam1GxPwj04ylEzibYLFA2eGl5Ev02klt80JA0xejMPqrn0mYHNNnLEgyqYTPbicXpY3tn6SA/132, createdBy=38fd2500059, createdName=新生儿张玉军, createdTime=Mon Oct 25 07:50:32 CST 2021, time=2021-10-25, status=1, ipAttribution=)]
    2021-10-27 田黎

    学习了,认认真真好好

    0

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    2021-10-26 医鸣惊人

    认真学习了。

    0

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    2021-10-26 @gxl

    学习了

    0

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    2021-10-25 ms9000001361057378

    学习了

    0

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    2021-10-25 二爽

    学习了

    0

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