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Am J Resp Crit Care:维生素C预防妊娠期母亲吸烟相关的后代DNA甲基化改变!

2017-04-21 xing.T MedSci原创

研究人员确定了一个维生素C补充使多个位点DNA甲基化正常化的模式。这种模式在组织和时间上的一致性暗示了对后代DNA甲基化存在全身性和持久性的影响。进一步的工作是必要的,以确定在全基因组范围内的DNA甲基化变化如何介导或反映孕妇吸烟对后代肺功能的持续性影响。

有研究证实母亲在妊娠期间吸烟的婴儿肺功能终生下降。分娩时胎盘和脐带血、胎儿肺中以及儿童口腔上皮细胞和血液中DNA甲基化的变化与产妇妊娠期间吸烟之间的相关性已经被描述。近日,呼吸内科以及重症医学领域权威杂志Am J Resp Crit Care上发表了一篇研究文章,研究人员最近进行的一个随机临床试验(NCT00632476)表明吸烟孕妇补充维生素C可减轻孕妇吸烟对后代肺功能的影响,并且减少婴儿一岁时喘息的发病率。

该研究旨在确定补充维生素C是否可以降低由母亲吸烟引起的后代甲基化改变,并且明确特异性CpGs甲基化是否与后代肺功能结局相关。研究人员使用在NCT00632476试验期间收集的胎盘、脐带血和口腔样本进行靶向的亚硫酸氢钠测序,随后采用亚硫酸氢钠扩增测序对选择的脐带血进行独立验证。

研究人员发现大多数(69.03%)甲基化≥10%的CpGs在安慰剂组和非吸烟组之间的差异得到了恢复(至少50%),达到了维生素C治疗的非吸烟者水平。大部分恢复的CpGs与低甲基化CpGs更大富集的表型结局相关。

研究人员确定了一个维生素C补充使多个位点DNA甲基化正常化的模式。这种模式在组织和时间上的一致性暗示了对后代DNA甲基化存在全身性和持久性的影响。进一步的工作是必要的,以确定在全基因组范围内的DNA甲基化变化如何介导或反映孕妇吸烟对后代肺功能的持续性影响。

原始出处:

Lyndsey E Shorey-Kendrick , et al. Vitamin C Prevents Offspring DNA Methylation Changes Associated with Maternal Smoking in Pregnancy. AM J RESP CRIT CARE 2017. http://www.atsjournals.org/doi/abs/10.1164/rccm.201610-2141OC

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1251032, encodeId=9c5112510321e, content=<a href='/topic/show?id=90494486837' target=_blank style='color:#2F92EE;'>#妊娠期#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44868, encryptionId=90494486837, topicName=妊娠期)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Sun Apr 23 12:06:00 CST 2017, time=2017-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189793, encodeId=f3f5189e9347, content=维生素C预防妊娠期母亲吸烟相关的后代DNA甲期化改变。, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Sun Apr 23 07:18:55 CST 2017, time=2017-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189599, encodeId=67021895998e, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sat Apr 22 09:59:52 CST 2017, time=2017-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189564, encodeId=2d7118956459, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuGx0Nj1tUEG8bCiclXBNCCfjGSeFLCtppUMLTdyCtkvyjxxXViaDnQv43w5VAuic6FGPuCicSgnNKBc3/0, createdBy=21f41994764, createdName=阿吴, createdTime=Sat Apr 22 07:57:27 CST 2017, time=2017-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189492, encodeId=b49b18949270, content=签到学习了很多。, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://q.qlogo.cn/qqapp/1103841572/A3E53E62691178E2F18D7B999FD22131/100, createdBy=f44d2003846, createdName=Chongyang Zhang, createdTime=Fri Apr 21 23:27:47 CST 2017, time=2017-04-21, status=1, ipAttribution=)]
    2017-04-23 jyzxjiangqin

    维生素C预防妊娠期母亲吸烟相关的后代DNA甲期化改变。

    0

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    2017-04-22 飛歌

    学习了很有用

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1251032, encodeId=9c5112510321e, content=<a href='/topic/show?id=90494486837' target=_blank style='color:#2F92EE;'>#妊娠期#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44868, encryptionId=90494486837, topicName=妊娠期)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Sun Apr 23 12:06:00 CST 2017, time=2017-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189793, encodeId=f3f5189e9347, content=维生素C预防妊娠期母亲吸烟相关的后代DNA甲期化改变。, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Sun Apr 23 07:18:55 CST 2017, time=2017-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189599, encodeId=67021895998e, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sat Apr 22 09:59:52 CST 2017, time=2017-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189564, encodeId=2d7118956459, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuGx0Nj1tUEG8bCiclXBNCCfjGSeFLCtppUMLTdyCtkvyjxxXViaDnQv43w5VAuic6FGPuCicSgnNKBc3/0, createdBy=21f41994764, createdName=阿吴, createdTime=Sat Apr 22 07:57:27 CST 2017, time=2017-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=189492, encodeId=b49b18949270, content=签到学习了很多。, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://q.qlogo.cn/qqapp/1103841572/A3E53E62691178E2F18D7B999FD22131/100, createdBy=f44d2003846, createdName=Chongyang Zhang, createdTime=Fri Apr 21 23:27:47 CST 2017, time=2017-04-21, status=1, ipAttribution=)]
    2017-04-22 阿吴

    0

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    2017-04-21 Chongyang Zhang

    签到学习了很多。

    0

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