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JCEM:妊娠晚期25(OH)D状态可能影响后代肌肉发育

2013-11-11 佚名 丁香园

妊娠期孕妇25–羟维生素D[25(OH)D]状态与后代骨骼发育和肥胖有关。同时,维生素D与产后肌肉功能有关,但是,对胎儿出生前25(OH)D暴露在程序化肌肉发育中的作用所知甚少。为了探讨孕妇妊娠34周时血浆25(OH)D状态与后代4岁时瘦体重和肌肉强度的关系,来自英国南安普顿大学Cyrus Cooper教授及其团队进行了一项研究,该研究发现妊娠晚期宫内25(OH)D暴露可能

妊娠期孕妇25–羟维生素D[25(OH)D]状态与后代骨骼发育和肥胖有关。同时,维生素D与产后肌肉功能有关,但是,对胎儿出生前25(OH)D暴露在程序化肌肉发育中的作用所知甚少。为了探讨孕妇妊娠34周时血浆25(OH)D状态与后代4岁时瘦体重和肌肉强度的关系,来自英国南安普顿大学Cyrus Cooper教授及其团队进行了一项研究,该研究发现妊娠晚期宫内25(OH)D暴露可能影响后代肌肉发育,这主要通过影响肌肉强度,而不是肌肉含量。该研究结果在线发表在2013年10月31日 The Journal of Clinical Endocrinology & Metabolism 杂志上。 【原文下载】

该研究是一项以英国人口为基础的前瞻性母亲–后代队列研究:南安普顿女性调查(SWS)。SWS最初招募了12583例未怀孕的女性受试者,其中3159例有单胎妊娠。678对母亲–孩子入选这项分析。后代评估在4岁时进行,包括手握力(Jamar测力计),以及双能X线吸收法(Hologic开发)测定全身瘦体重和瘦体重百分比。在一个孩子亚组中,用7天加速测量术评估身体活动。

该研究结果表明,妊娠期孕妇血清25(OH)D浓度与后代身高校正后手握力呈正相关,校正孕妇的混杂因素、哺乳持续时间和孩子4岁时身体活动后,这种相关性仍然存在。同时,孕妇25(OH)D与后代瘦体重百分比呈正相关,但与总瘦体重无关。然而,校正混杂因素后,这种相关性不复存在。

该研究发现,妊娠晚期宫内25(OH)D暴露可能影响后代肌肉发育,这主要通过影响肌肉强度,而不是肌肉含量。

研究背景:

已知维生素D对出生后的肌肉功能非常重要。首先,在骨骼肌中分离出维生素D受体(VDR),而且VDR多态性与肌肉强度的差异有关。其次,维生素D缺乏多伴有近端肌病,在维生素D补充治疗后这种肌病可以改善。第三,尽管维生素D补充治疗试验对肌肉强度的改善有不一致的结果,青少年女性和老年人的亚临床维生素D缺乏与身体活动能力和肌肉功能的降低有关。

此外,越来越多的证据显示妊娠期间孕妇25–羟维生素D[25(OH)D]浓度可能影响后代童年时的身体组成。在观察性研究中,孕妇产前25(OH)D浓度与后代骨量呈正相关,并与后代脂肪量呈负相关。

尽管缺乏关于出生后肌肉发育与宫内25(OH)D暴露的数据,出生体重(一项产前营养的指标)与贯穿童年到老年生命历程中的肌肉质量和握力有关,符合早期的生活影响在长期肌肉发育中有潜在作用。

因此,该研究利用一个以人群为基础母亲–后代队列研究(南安普顿女性调查),验证妊娠期间孕妇血清25(OH)D浓度与后代4岁时肌肉大小和强度呈正相关的假说。

原文出处:

Harvey NC, Moon RJ, Sayer AA, Ntani G, Davies JH, Javaid MK, Robinson SM, Godfrey KM, Inskip HM, Cooper C; The Southampton Women's Survey Study Group.Maternal antenatal vitamin D status and offspring muscle development: findings from the Southampton Women's Survey.J Clin Endocrinol Metab. 2013 Oct 31. 【原文下载】

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    2014-01-21 achengzhao
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    2013-11-13 neurowu

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