Thyroid:碘摄入量对血清促甲状腺激素的影响

2020-08-10 MedSci原创 MedSci原创

血清TSH浓度随着碘摄入量的增加而显著增加。因此,在建立TSH参考范围时必须考虑碘的摄入。为避免对SCH的过度诊断和过度治疗,不同地区应使用单独的血清TSH参考范围。

亚临床甲状腺功能减退症(SCH)是根据血清促甲状腺激素(TSH)参考范围进行诊断的,而其参考范围又受许多因素的影响。

近日,甲状腺疾病领域权威杂志Thyroid上发表了一篇研究文章,这项研究的数据来自中国全国性横断面研究(TIDE研究)的78470名参与者。总研究人群是TIDE计划的参与者,对照人群是美国国家临床生物化学研究院(NACB)指南定义的总人群的一部分。研究人员测量了受试者血清中甲状腺激素、TSH、甲状腺抗体的浓度和尿碘浓度(UIC)。

对照人群(由NACB定义)和总人群的血清TSH几何平均数(2.5th-97.5th)分别为2.28 mIU/L(0.74-7.04 mIU/L)和2.34 mIU/L(0.61-8.33 mIU/L)。在对照人群中,UIC的增加与TSH的第50和97.5%的增加和第2.5%的减少显著相关。女性的TSH中位数显著高于男性(2.41 mIU/L与2.16 mIU/L,P<0.001)。年龄的增加与TSH第97.5分位数的增加显著相关。人群年龄每增加10年,TSH的第97.5个百分数就会增加0.534 mIU/L。在TIDE研究中,根据试剂盒推荐的范围(Roche 0.27-4.2 mIU/L)和NACB标准范围(0.74-7.04 mIU/L)诊断出的SCH患病率有显著差异(Roche 13.61% vs. TIDE 3.00%,P<0.05)。然而,在促甲状腺素为0.27-4.2 mIU/L和4.2-7.04 mIU/L的两组受试者未来的CVD风险(血管疾病,由Framingham风险评分反映)没有显著差异。

由此可见,血清TSH浓度随着碘摄入量的增加而显著增加。因此,在建立TSH参考范围时必须考虑碘的摄入。为避免对SCH的过度诊断和过度治疗,不同地区应使用单独的血清TSH参考范围。

原始出处:

Lei Zhao,et al.The effect of increased iodine intake on serum thyrotropin: A cross-sectional, Chinese nationwide study.Thyroid.2020.https://www.liebertpub.com/doi/10.1089/thy.2019.0842

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    2021-05-06 MedSciZeng

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    2020-10-17 lmm397
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    2020-08-11 songbq
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    2020-08-11 songbq
  6. [GetPortalCommentsPageByObjectIdResponse(id=963073, encodeId=d2569630e31e, content=<a href='/topic/show?id=a6821e4254f' target=_blank style='color:#2F92EE;'>#Thyroid#</a>点击进入话题查看更多相关文章 或评论时插入话题加入讨论, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17425, encryptionId=a6821e4254f, topicName=Thyroid)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20221103/2796e00c9b4549e3b313ed9e7accc68f/b52d6d98bbe04782b5a4e2dd1ee80be2.jpeg, createdBy=078e1614372, createdName=MedSciZeng, createdTime=Thu May 06 13:43:47 CST 2021, time=2021-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1860671, encodeId=42bb18606e167, content=<a href='/topic/show?id=830b5693631' target=_blank style='color:#2F92EE;'>#摄入量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56936, encryptionId=830b5693631, topicName=摄入量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f90281, createdName=lmm397, createdTime=Sat Oct 17 05:16:09 CST 2020, time=2020-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1360279, encodeId=721313602e907, content=<a href='/topic/show?id=b0dc2e097bf' target=_blank style='color:#2F92EE;'>#促甲状腺激素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27097, encryptionId=b0dc2e097bf, topicName=促甲状腺激素)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80c5136, createdName=drj2003, createdTime=Tue Aug 11 23:16:09 CST 2020, time=2020-08-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1560435, encodeId=d95a156043539, content=<a href='/topic/show?id=d9b7e368676' target=_blank style='color:#2F92EE;'>#碘摄入#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73686, encryptionId=d9b7e368676, topicName=碘摄入)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=66b115134675, createdName=songbq, createdTime=Tue Aug 11 23:16:09 CST 2020, time=2020-08-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1566444, encodeId=932c15664448c, content=<a href='/topic/show?id=d9b7e368676' target=_blank style='color:#2F92EE;'>#碘摄入#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73686, encryptionId=d9b7e368676, topicName=碘摄入)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=66b115134675, createdName=songbq, createdTime=Tue Aug 11 23:16:09 CST 2020, time=2020-08-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=807512, encodeId=e4c880e512c0, content=不同地区的饮食习惯不一样,比如沿海地区食用海产品多,在食用盐量基本相同的情况下,他们的碘摄入量就比较高。<a href='/topic/show?id=b02e69845d9' target=_blank style='color:#2F92EE;'>#甲状腺#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=140, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69845, encryptionId=b02e69845d9, topicName=甲状腺)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211019/df01a4bfb64246379ddfef3370d04115/e1274c8eb5e440918f56f83bcfea9031.jpg, createdBy=3a345397082, createdName=Jessica, createdTime=Tue Aug 11 17:42:54 CST 2020, time=2020-08-11, status=1, ipAttribution=)]
    2020-08-11 Jessica

    不同地区的饮食习惯不一样,比如沿海地区食用海产品多,在食用盐量基本相同的情况下,他们的碘摄入量就比较高。#甲状腺#

    0

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