Microbiome:太空舱内微生物群变化可能影响宇航员健康

2017-10-10 张家伟 新华网

如果要开展前往火星的载人航天任务,宇航员需要在密闭太空舱内长时间生活。一个国际团队在英国《微生物组》杂志上发表新研究说,太空舱内微生物群数量和种类变化,对未来长期太空旅行中创造一个健康、稳定的环境起着重要作用。

如果要开展前往火星的载人航天任务,宇航员需要在密闭太空舱内长时间生活。一个国际团队在英国《微生物组》杂志上发表新研究说,太空舱内微生物群数量和种类变化,对未来长期太空旅行中创造一个健康、稳定的环境起着重要作用。

来自英国爱丁堡大学、奥地利格拉茨医科大学、德国宇航中心等机构的研究人员对俄罗斯“火星500”模拟实验进行了深入分析。在这项模拟实验中,6名宇航员在莫斯科一处模拟的密闭太空舱中持续生活520天。这期间,他们从太空舱的20处地方收集了360个微生物样本。

研究人员对这些微生物样本的分析显示,在密闭的太空舱内仍有丰富的微生物,其中葡萄球菌和杆菌为主体;人类活动较频繁的地方微生物也更多,人类也将微生物分散到模拟太空舱各处;微生物群的构成仍保持了一个高动态的体系,能够根据环境条件作出改变,不过随着时间推移微生物多样性会显着下降。

研究人员说,这显示在太空舱中要维持一个多样化的生物群落非常具有挑战性,而这种状态通常有助营造一个健康、稳定的环境。在未来的长期太空旅行中,飞船内不可能做到无菌环境,因此必须密切关注飞船内微生物组的变化,防范高耐受力的致病微生物扩散以及微生物多样性下降,也有必要采取一些措施保护微生物多样性。

报告作者之一、爱丁堡大学学者彼得拉·施文德纳说,长期密闭状态对太空舱中微生物群的影响一直以来都还不是很清楚,这项研究在一个相对完整的模拟火星旅程中对微生物群数量、多样性以及相关变化进行了深入观察。

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    2017-11-10 sunylz
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    2017-12-02 xjy02
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    2018-08-20 pyaili
  5. [GetPortalCommentsPageByObjectIdResponse(id=1917697, encodeId=36b1191e697ec, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Fri Nov 10 18:10:00 CST 2017, time=2017-11-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1824834, encodeId=bdb3182483414, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Sun Jan 28 19:10:00 CST 2018, time=2018-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084276, encodeId=c0af20842e697, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Sat Dec 02 22:10:00 CST 2017, time=2017-12-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1634158, encodeId=65091634158d7, content=<a href='/topic/show?id=4ffe11e09d8' target=_blank style='color:#2F92EE;'>#Microbiome#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11709, encryptionId=4ffe11e09d8, topicName=Microbiome)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=39c822073631, createdName=pyaili, createdTime=Mon Aug 20 14:10:00 CST 2018, time=2018-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1857514, encodeId=4268185e51418, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c30265, createdName=jiafufeng@yaho, createdTime=Fri Sep 14 03:10:00 CST 2018, time=2018-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1367739, encodeId=bf8f136e739a2, content=<a href='/topic/show?id=2cee50e22c6' target=_blank style='color:#2F92EE;'>#微生物群#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50722, encryptionId=2cee50e22c6, topicName=微生物群)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3609256, createdName=zhu_jun9837, createdTime=Thu Oct 12 00:10:00 CST 2017, time=2017-10-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2037852, encodeId=c83e203e852e8, content=<a href='/topic/show?id=08c8456e93b' target=_blank style='color:#2F92EE;'>#宇航员#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=45679, encryptionId=08c8456e93b, topicName=宇航员)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=38232500109, createdName=1249898am15暂无昵称, createdTime=Thu Dec 14 16:10:00 CST 2017, time=2017-12-14, status=1, ipAttribution=)]
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