Circulation:叶酸水平与先天性心脏病的相关性

2017-03-19 MedSci MedSci原创

叶酸缺乏是先天性心脏病(CHD)的独立危险因素;然而,母体血浆的叶酸水平反而不是一个好的诊断标记。全基因组调查已经确定非叶酸代谢基因的变异型与血浆叶酸水平相关,这表明这些遗传多态性是CHD的潜在风险因素。近期,为了检查汉族人群中叶酸浓度相关变异对冠心病风险的影响,一项研究进行了三项独立的病例对照研究,包括总共1,489例CHD患者和1,745例对照。此项研究发表在杂志Circulation上。研究

叶酸缺乏是先天性心脏病(CHD)的独立危险因素;然而,母体血浆的叶酸水平反而不是一个好的诊断标记。全基因组调查已经确定非叶酸代谢基因的变异型与血浆叶酸水平相关,这表明这些遗传多态性是CHD的潜在风险因素。


近期,为了检查汉族人群中叶酸浓度相关变异对冠心病风险的影响,一项研究进行了三项独立的病例对照研究,包括总共1,489例CHD患者和1,745例对照。此项研究发表在杂志Circulation上。
研究者们使用qRT-PCR和western blotting的方法,在人类血管和蜕膜组织标本中检测Fidgetin的表达(FIGN)。通过荧光素酶报告基因测定,表面等离子体共振和染色质免疫沉淀来研究分子机制。FIGN相互作用的蛋白通过串联亲和纯化和共免疫沉淀来鉴定。使用商业蛋白酶体活性测定和免疫测定定量叶酸途径中的蛋白酶体活性和代谢物浓度。

此项研究结果显示:FIGN基因的内含子4中的+ 94762G> C(rs2119289)变体与CHD易感性的显着降低相关(对于等位基因P = 5.1×10-14,对于基因型P = 8.5×10-13)。对组合样本的分析表明,与那些GG基因型相比,携带杂合(GC)或纯合(CC)基因型的个体的CHD风险分别降低了44%(优势比[OR] = 0.56,95%置信区间[CI] = 0.47-0.67)和66%(OR = 0.34,95%CI = 0.23-0.50)。

血浆叶酸水平降低的小C等位基因携带者表现出显着增加的FIGN表达,这是因为转录抑制子CREB1不结合FIGN同种型X3的可选启动子。其机制可能是,增加FIGN表达导致叶酸载体1(RFC1)和二氢叶酸还原酶(DHFR)通过抑制其蛋白酶体的降解而积累,这一过程促进叶酸吸收和代谢。

此项研究表明,由Fidgetin内含子变体确定,通过增加叶酸跨膜转运和利用使得循环叶酸水平减少可以作为CHD的保护机制。这一结果也解释了为什么循环叶酸水平没有良好的诊断价值。

原始出处:
Wang D, Wang F, et al. Lower Circulating Folate Induced by a Fidgetin Intronic Variant is Associated with Reduced Congenital Heart Disease Susceptibility. Circulation. 2017 Mar 16. pii: CIRCULATIONAHA.116.025164. doi: 10.1161/CIRCULATIONAHA.116.025164.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1837222, encodeId=c7a4183e2226a, content=<a href='/topic/show?id=3f34e253206' target=_blank style='color:#2F92EE;'>#相关性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72532, encryptionId=3f34e253206, topicName=相关性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a9de34, createdName=shenxlcyp, createdTime=Sun Apr 23 12:21:00 CST 2017, time=2017-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=212337, encodeId=797d21233ee4, content=谢谢分享,学习了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLC1BMzZWdMSPQWuib6BtQGicK8ygGBM6YakpfkRc67soFSuKbZr86enL1KggQZEZbgWSeicJibafmYfQ3AibicIHMwwicmDShfRFvvI38/0, createdBy=272a110164, createdName=laoli, createdTime=Sun Jun 18 13:49:37 CST 2017, time=2017-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=188297, encodeId=9c8118829e7b, content=看来育龄女性补充叶酸很有必要,不仅预防神经管畸形还能预防先心病啊!应广泛宣传!, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12601926874, createdName=DrJiao999, createdTime=Mon Apr 17 20:37:56 CST 2017, time=2017-04-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1369271, encodeId=e2f913692e1df, content=<a href='/topic/show?id=bc9f28589d0' target=_blank style='color:#2F92EE;'>#先天性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=28589, encryptionId=bc9f28589d0, topicName=先天性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a435298, createdName=huirong, createdTime=Tue Mar 21 05:21:00 CST 2017, time=2017-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=181185, encodeId=0bad1811852e, content=好好学习,涨知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLANEL7Sww3HicKsN9aribicAmGGWXOIMEiaZ1iadgZg9RibjqSwIKUS8gSPib2NwTVg2zVvVJhdP3BkuDIl/0, createdBy=944d1605392, createdName=shaosai, createdTime=Sun Mar 19 17:04:18 CST 2017, time=2017-03-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=181176, encodeId=7e521811e671, content=很好的学习资料,谢谢了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20161026/IMG58107C0F82E499574.jpg, createdBy=00e81970035, createdName=1e15b6fem30(暂无匿称), createdTime=Sun Mar 19 16:54:36 CST 2017, time=2017-03-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=181155, encodeId=3c5418115588, content=非常好的研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Sun Mar 19 15:37:08 CST 2017, time=2017-03-19, status=1, ipAttribution=)]
    2017-06-18 laoli

    谢谢分享,学习了!

    0

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    2017-04-17 DrJiao999

    看来育龄女性补充叶酸很有必要,不仅预防神经管畸形还能预防先心病啊!应广泛宣传!

    0

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    2017-03-21 huirong
  5. [GetPortalCommentsPageByObjectIdResponse(id=1837222, encodeId=c7a4183e2226a, content=<a href='/topic/show?id=3f34e253206' target=_blank style='color:#2F92EE;'>#相关性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72532, encryptionId=3f34e253206, topicName=相关性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a9de34, createdName=shenxlcyp, createdTime=Sun Apr 23 12:21:00 CST 2017, time=2017-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=212337, encodeId=797d21233ee4, content=谢谢分享,学习了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLC1BMzZWdMSPQWuib6BtQGicK8ygGBM6YakpfkRc67soFSuKbZr86enL1KggQZEZbgWSeicJibafmYfQ3AibicIHMwwicmDShfRFvvI38/0, createdBy=272a110164, createdName=laoli, createdTime=Sun Jun 18 13:49:37 CST 2017, time=2017-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=188297, encodeId=9c8118829e7b, content=看来育龄女性补充叶酸很有必要,不仅预防神经管畸形还能预防先心病啊!应广泛宣传!, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12601926874, createdName=DrJiao999, createdTime=Mon Apr 17 20:37:56 CST 2017, time=2017-04-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1369271, encodeId=e2f913692e1df, content=<a href='/topic/show?id=bc9f28589d0' target=_blank style='color:#2F92EE;'>#先天性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=28589, encryptionId=bc9f28589d0, topicName=先天性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a435298, createdName=huirong, createdTime=Tue Mar 21 05:21:00 CST 2017, time=2017-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=181185, encodeId=0bad1811852e, content=好好学习,涨知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLANEL7Sww3HicKsN9aribicAmGGWXOIMEiaZ1iadgZg9RibjqSwIKUS8gSPib2NwTVg2zVvVJhdP3BkuDIl/0, createdBy=944d1605392, createdName=shaosai, createdTime=Sun Mar 19 17:04:18 CST 2017, time=2017-03-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=181176, encodeId=7e521811e671, content=很好的学习资料,谢谢了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20161026/IMG58107C0F82E499574.jpg, createdBy=00e81970035, createdName=1e15b6fem30(暂无匿称), createdTime=Sun Mar 19 16:54:36 CST 2017, time=2017-03-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=181155, encodeId=3c5418115588, content=非常好的研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Sun Mar 19 15:37:08 CST 2017, time=2017-03-19, status=1, ipAttribution=)]
    2017-03-19 shaosai

    好好学习,涨知识

    0

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    2017-03-19 1e15b6fem30(暂无匿称)

    很好的学习资料,谢谢了。

    0

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    2017-03-19 天涯183

    非常好的研究

    0

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