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关于CK和CK-MB的5个困惑

2018-03-08 小虫 检验医学网

1CKMB正常,CK特别高可能会出现在什么情况的病人? 溶血标本、肌肉损伤、外科手术后、剧烈运动、酒精中毒、肌营养不良等。曾经有个病例,一位退休教师查体CK3000U/L,但CKMB正常,找到这位老师后发现他是一个游泳教练,在查体的前一天做过过量的运动。


1CKMB正常,CK特别高可能会出现在什么情况的病人?

溶血标本、肌肉损伤、外科手术后、剧烈运动、酒精中毒、肌营养不良等。曾经有个病例,一位退休教师查体CK3000U/L,但CKMB正常,找到这位老师后发现他是一个游泳教练,在查体的前一天做过过量的运动。

2CKMB>CK会出现在什么情况?

国内及国外的很多报道有上述现象,只要CKMB的升高不是由于溶血造成的,CKMB>CK,这样的病例95%是O型或B型血的癌症患者,原因是部分癌症病人免疫系统混乱,其中的一些免疫球蛋白充当的辅酶的作用。

沈霞教授的解释:近年来国内一些单位用免疫抑制法测CKMB,其原理为抑制M亚单位的酶活性,因为正常血清中几乎无CKBB,故将此值乘以2可以认为大致代表CKMB的活性。此法简单迅速,缺点是特异性差,如患者血清中存在CKBB或异常CK时,都将出现假性增高。不少作者报到异常CK同工酶,一条称巨CK(Maxro-CK),它是CKBB与免疫球蛋白的复合物,有IgG亦有IgA,在正常血清中Maxro-CK仅占0.8%-1.6%。另一条称线粒体CK(CK-MT),CK-MT是结合在肌肉、脑、肝内的线粒体表面,可能是线粒体膜的碎片,在正常血清中CK-MT是不出现的,在心梗时亦不出现,只有当组织极度损伤,由于线粒体和细胞壁极度破坏,方可在血清中检出。由于Maxro-CK和不典型的CK-MT均不能被M抗体所抑制,故当它们出现时,会导致CKMB高于CK总活力的假性升高。

3为什么有些质控CKMB结果大于CK?

因为质控中有一些添加成分,可能动物组织(牛脑),此组织中含有CKBB,所以CKMB的结果大于CK,但不应大于CK的二倍。

4可以用CKMB试剂盒测定CKBB吗?

理论上可以,但提供的标本中必须不含有CKMB,这些可以用电泳法来检查。

5溶血标本可以测定CKMB吗?

通常测定CKMB的标本应避免溶血,在Olympus的试剂与仪器配合可以基本上扣除这种干扰。RBC中并不含有CKMB,但RBC中含有ADK,一般厂家会在试剂中加入抑制剂(5磷酸二腺酐AP5A)来抑制ADK的作用,但抑制率仅有95-97%,也就是说有3-5%没有被抑制,对于正常的标本只升高0-6U/L,极端标本可能会到35U/L,只要应用双速率法,就可以扣除ADK的干扰。

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1981897, encodeId=fe94198189e5d, content=<a href='/topic/show?id=cf144e8572' target=_blank style='color:#2F92EE;'>#CK-MB#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4785, encryptionId=cf144e8572, topicName=CK-MB)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3d1e370, createdName=yibei, createdTime=Thu Aug 16 22:48:00 CST 2018, time=2018-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294798, encodeId=9a57294e98ea, content=学习啦.很好的内容, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210720/81c525def1c4490db2c4d4fd31f4b910/367559b074d146aeab71188669c2396a.jpg, createdBy=3ec21628724, createdName=zybear, createdTime=Sat Mar 10 08:53:36 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294675, encodeId=31672946e517, 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=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Sat Mar 10 05:37:13 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294397, encodeId=f3ea29439ece, content=学习了.很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Fri Mar 09 06:43:45 CST 2018, time=2018-03-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294329, encodeId=13202943297c, content=学习了很有用, 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/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Mar 09 00:28:20 CST 2018, time=2018-03-09, status=1, ipAttribution=)]
    2018-08-16 yibei
  2. [GetPortalCommentsPageByObjectIdResponse(id=1981897, encodeId=fe94198189e5d, content=<a href='/topic/show?id=cf144e8572' target=_blank style='color:#2F92EE;'>#CK-MB#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4785, encryptionId=cf144e8572, topicName=CK-MB)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3d1e370, createdName=yibei, createdTime=Thu Aug 16 22:48:00 CST 2018, time=2018-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294798, encodeId=9a57294e98ea, content=学习啦.很好的内容, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210720/81c525def1c4490db2c4d4fd31f4b910/367559b074d146aeab71188669c2396a.jpg, createdBy=3ec21628724, createdName=zybear, createdTime=Sat Mar 10 08:53:36 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294675, encodeId=31672946e517, 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=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Sat Mar 10 05:37:13 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294397, encodeId=f3ea29439ece, content=学习了.很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Fri Mar 09 06:43:45 CST 2018, time=2018-03-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294329, encodeId=13202943297c, content=学习了很有用, 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/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Mar 09 00:28:20 CST 2018, time=2018-03-09, status=1, ipAttribution=)]
    2018-03-10 zybear

    学习啦.很好的内容

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1981897, encodeId=fe94198189e5d, content=<a href='/topic/show?id=cf144e8572' target=_blank style='color:#2F92EE;'>#CK-MB#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4785, encryptionId=cf144e8572, topicName=CK-MB)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3d1e370, createdName=yibei, createdTime=Thu Aug 16 22:48:00 CST 2018, time=2018-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294798, encodeId=9a57294e98ea, content=学习啦.很好的内容, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210720/81c525def1c4490db2c4d4fd31f4b910/367559b074d146aeab71188669c2396a.jpg, createdBy=3ec21628724, createdName=zybear, createdTime=Sat Mar 10 08:53:36 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294675, encodeId=31672946e517, 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=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Sat Mar 10 05:37:13 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294397, encodeId=f3ea29439ece, content=学习了.很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Fri Mar 09 06:43:45 CST 2018, time=2018-03-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294329, encodeId=13202943297c, content=学习了很有用, 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/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Mar 09 00:28:20 CST 2018, time=2018-03-09, status=1, ipAttribution=)]
    2018-03-10 121832a9m88暂无昵称

    学习了

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1981897, encodeId=fe94198189e5d, content=<a href='/topic/show?id=cf144e8572' target=_blank style='color:#2F92EE;'>#CK-MB#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4785, encryptionId=cf144e8572, topicName=CK-MB)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3d1e370, createdName=yibei, createdTime=Thu Aug 16 22:48:00 CST 2018, time=2018-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294798, encodeId=9a57294e98ea, content=学习啦.很好的内容, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210720/81c525def1c4490db2c4d4fd31f4b910/367559b074d146aeab71188669c2396a.jpg, createdBy=3ec21628724, createdName=zybear, createdTime=Sat Mar 10 08:53:36 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294675, encodeId=31672946e517, 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=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Sat Mar 10 05:37:13 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294397, encodeId=f3ea29439ece, content=学习了.很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Fri Mar 09 06:43:45 CST 2018, time=2018-03-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294329, encodeId=13202943297c, content=学习了很有用, 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/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Mar 09 00:28:20 CST 2018, time=2018-03-09, status=1, ipAttribution=)]
    2018-03-09 Ramsey

    学习了.很有用

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1981897, encodeId=fe94198189e5d, content=<a href='/topic/show?id=cf144e8572' target=_blank style='color:#2F92EE;'>#CK-MB#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4785, encryptionId=cf144e8572, topicName=CK-MB)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3d1e370, createdName=yibei, createdTime=Thu Aug 16 22:48:00 CST 2018, time=2018-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294798, encodeId=9a57294e98ea, content=学习啦.很好的内容, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210720/81c525def1c4490db2c4d4fd31f4b910/367559b074d146aeab71188669c2396a.jpg, createdBy=3ec21628724, createdName=zybear, createdTime=Sat Mar 10 08:53:36 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294675, encodeId=31672946e517, 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=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Sat Mar 10 05:37:13 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294397, encodeId=f3ea29439ece, content=学习了.很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Fri Mar 09 06:43:45 CST 2018, time=2018-03-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294329, encodeId=13202943297c, content=学习了很有用, 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/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Fri Mar 09 00:28:20 CST 2018, time=2018-03-09, status=1, ipAttribution=)]
    2018-03-09 飛歌

    学习了很有用

    0

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