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EB病毒实验室检查-EBV-DNA(学习笔记分享)

  • 2026-03-22 21:39:07
EB病毒实验室检查-EBV-DNA(学习笔记分享)

包头市第四医院

儿内科

    EB病毒是疱疹病毒4型。EB感染人淋巴细胞和上皮细胞,初次感染后病毒科长期在上呼吸道上皮细胞或淋巴组织中潜伏,EB病毒有增值性感染(活动性感染)和潜伏感染两种状态,潜伏感染和终身携带是EBV感染的重要特征。

    血清或血浆中 EBV-DNA 阳性提示患者体内存在活动性EBV感染或疾病与EBV密切相关(如原发EBV感染早期、EBV-HLH、大多数CAEBV、EBV相关肿瘤等),需结合临床表现及其他检查结果综合分析判断。

血清或血浆EBV-DNA 阴性提示为血清阳性转化的EBV健康携带者、未感染过EBV的患者、非EBV相关疾病患者、以及部分EBV相关疾病患者,如部分IM患者及IM后期,极少数CAEBV患者(结合血清学判定)。

外周血 PBMC(外周血单核核细胞) 中 EBV-DNA 载量高于102.5拷贝/ μgDNA 是CAEBV的诊断标准之一。全血样本 EBV-DNA 载量主要用于免疫缺陷患者EBV感染的诊断,以提高诊断EBV感染的敏感性,不推荐用于有免疫力的患者。因血清EBV阳性转化的健康携带者每 106 个 PBMC 中大约有1-50个EBV感染的细胞, 约7个拷贝 (1-30个拷贝) EBV-DNA /106 PBMC。因此,血清阳性转化的EBV健康携带者的全血或 PBMC 标本中可能检出低水平的 EBV-DNA 载量。

EBV-DNA 对诊断IM的阴性预测值较低,不必常规进行检测,仅对EBV抗体检测结果难以解释的病例可能有所帮助。使用血清或血浆标本进行EBV-DNA检测。 

因IM患者PBMC 中 EBV-DNA 阳性可持续 6 个月以上,需要 1年或更长时间达到EBV健康携带者的全血 EBV-DNA 水平(1-30 拷贝 EBV-DNA / 10PBMC),因此,在IM的诊治中需使用血清或血浆标本进行 EBV-DNA 载量检测,不宜使用全血和 PBMC 样本。

参考文献:全国儿童EB病毒感染协作组,中华实验和临床病毒学杂志编辑委员会全国儿童EB病毒感染协作组,中华实验和临床病毒学杂志编辑委员会EB病毒感染实验室诊断及临床应用专家共识《中华实验和临床病毒学杂志》2018,32(01)10.3760/cma.j.issn.1003-9279.2018.01.001

图片来自网络

陈瑞
副主任医师
儿科副主任

陈瑞,副主任医师,包头市第四医院儿科副主任。

中国罕见病联盟/北京罕见病诊疗与保障学会遗传性肝病分会第一届委员会委员

东北三省及内蒙古儿童肾脏风湿免疫联盟委员

内蒙古自治区医学会第十届儿科学分会青年委员会委员

内蒙古妇幼保健学会第二届儿科专业委员会委员

内蒙古自治区医学会医学遗传学分会第一届委员会委员

内蒙古自治区医师协会儿科医师分会青年委员会第一届委员会委员

在《World Journal of Gastroenterology》及《BMC Pediatrics》发表SCI 2篇,双核心期刊论文1篇。

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  134. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-view/src/Think.php ( 8.38 KB )
  135. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/framework/src/think/contract/TemplateHandlerInterface.php ( 1.60 KB )
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  139. /yingpanguazai/ssd/ssd1/www/no.67808.cn/runtime/temp/6df755f970a38e704c5414acbc6e8bcd.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000916s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001595s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000655s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000661s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001327s ]
  6. SELECT * FROM `set` [ RunTime:0.000660s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001452s ]
  8. SELECT * FROM `article` WHERE `id` = 476040 LIMIT 1 [ RunTime:0.000925s ]
  9. UPDATE `article` SET `lasttime` = 1774298147 WHERE `id` = 476040 [ RunTime:0.029558s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000671s ]
  11. SELECT * FROM `article` WHERE `id` < 476040 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001418s ]
  12. SELECT * FROM `article` WHERE `id` > 476040 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.006579s ]
  13. SELECT * FROM `article` WHERE `id` < 476040 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.009679s ]
  14. SELECT * FROM `article` WHERE `id` < 476040 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001747s ]
  15. SELECT * FROM `article` WHERE `id` < 476040 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007073s ]
0.227702s