1、165现代检验医学杂志第 38 卷第 1 期2023 年 1 月J Mod Lab Med,Vol.38,No.1,Jan.2023化学发光免疫法分析孕妇血清甲状腺球蛋白抗体 浓度分布及其对甲状腺球蛋白水平检测的影响研究康茹1,成晓悦1,王琪2,谢云1,杨军兰1,孟改利1(1.西北妇女儿童医院医学检验中心,西安 710061;2.西安交通大学第二附属医院检验科,西安 710002)摘要:目的分析孕妇人群中甲状腺球蛋白抗体(thyroglobulin antibody,TgAb)的阳性率以及其体内不同浓度的TgAb 对甲状腺球蛋白(thyroglobulin,Tg)检测的影响。方法回顾性分析 2
2、020 年 10 月 2021 年 12 月在西北妇女儿童医院门诊孕检的 68 955 例孕妇血清 TgAb 和 Tg 的结果,并收集 240 份不同浓度 TgAb 的孕妇血清,进行 Tg 确证血清回收实验,分析不同浓度 TgAb 对 Tg 检测的影响。结果依据西门子检测系统的阳性结果判读标准(TgAb 60IU/ml),68 955例孕妇TgAb阳性率为15.47%(10 665/68 955),且TgAb阳性率随着孕妇年龄增长呈增高趋势(2=101.931,P0.001)。按照 TgAb(IU/ml)500 进行分组,其对应的 Tg检测浓度(ng/ml)范围分别为 11.26(2.8743
3、.80),3.40(0.1363.95),3.15(0.1570.70),0.60(0.1350.92),0.59(0.1464.22)和 0.74(0.1414.82)。Tg 检测浓度与 TgAb 水平呈负相关(r=-0.504,P0.001)。按照上述分组,其对应的Tg确证血清回收率分别为102.10%(81.09%106.05%),97.03%(43.15%109.29%),95.57%(41.67%106.20%),84.57%(33.41%105.25%),66.97%(29.33%104.50%)和 65.98%(21.70%98.56%)。Tg 确证血清回收率与 TgAb水平呈负
4、相关(r=-0.565,P0.001)。Tg确证血清回收率小于80%的占比分别为0%(0/40),27.5%(11/40),35%(14/40),42.5%(17/40),62.5%(25/40)和 67.5%(27/40)。孕妇不同 TgAb 浓度血清的 Tg 确证血清回收率小于 80%的百分率差异有统计学意义(2=51.134,P0.001),且随着 TgAb 浓度的增高,呈增高趋势(2=48.363,P0.001)。结论当孕妇体内 TgAb 为阴性时,Tg 的检测结果无影响;当 TgAb 阳性时,会干扰 Tg 检测,使其结果偏低,且浓度越高对Tg 的干扰越强。由于孕妇群体 TgAb 阳性
5、率较高,建议临床进行 Tg 检测时同时联合检测 TgAb 综合判断。关键词:孕妇;甲状腺球蛋白抗体;甲状腺球蛋白中图分类号:R714.147;Q503文献标识码:A文章编号:1671-7414(2023)01-165-05doi:10.3969/j.issn.1671-7414.2023.01.031Study on the Distribution of Serum Thyroglobulin Antibody in Pregnant Women by Chemiluminescence Immunoassay and Its Interference on the Detection of
6、 Thyroglobulin KANG Ru1,CHENG Xiao-yue1,WANG Qi2,XIE Yun1,YANG Jun-lan1,MENG Gai-li1(1.Department of Clinical Laboratory,Northwest Womens and Childrens Hospital,Xian 710061,China;2.Department of Clinical Laboratory,the Second Affiliated Hospital of Xian Jiaotong University,Xian 710002,China)Abstract
7、:ObjectiveTo analyze the positive rate of thyroglobulin antibody(TgAb)in pregnant women and investigate the interference of different concentrations of TgAb in pregnant women on the detection of thyroglobulin(Tg).MethodsThe results of TgAb positive rate of 68 955 pregnant women with pregnancy examin
8、ation in Northwest Womens and Childrens Hospital were analyzed retrospectively,from October 2020 to December 2021.240 samples of TgAb serum of pregnant women with different concentration levels were collected,and Tg confirmatory serum was added for recovery experiment.Results According to the result
9、 interpretation standard of Siemens detection system,the positive rate of TgAb(TgAb 60IU/ml)in pregnant women was 15.47%(10 665/68 955),increasing with the age of pregnant women(2=101.931,P 0.001).TgAb(IU/ml)concentrations were grouped according to 500.Corresponding to different groups,Tg detection
10、concentration ranges(ng/ml)were 11.26(2.8743.80),3.40(0.1363.95),3.15(0.1570.70),0.60(0.1350.92),0.59(0.1464.22)and 0.74(0.1414.82),and there was a significant negative correlation between the concentration of Tg and the level of TgAb,and the correlation coefficient was r=-0.504(P0.001).The recovery
11、 rate of 作者简介:康茹(1989-),女,硕士研究生,检验技师,主要从事感染与免疫的研究,E-mail:。通讯作者:孟改利(1986-),女,硕士研究生,主管技师,主要从事感染与免疫的研究,E-mail:。166现代检验医学杂志第 38 卷第 1 期2023 年 1 月J Mod Lab Med,Vol.38,No.1,Jan.2023different TgAb concentrations of maternal serum was statistically different(P0.001).According to the above grouping,the corres
12、ponding recovery rates of Tg confirmatory serum were 102.10%(81.09%106.05%),97.03%(43.15%109.29%),95.57%(41.67%106.20%),84.57%(33.41%105.25%),66.97%(29.33%104.50%)and 65.98%(21.70%98.56%),and Tg confirmed recovery rate was significantly negatively correlated with the level of TgAb,and the correlatio
13、n coefficient was r=-0.565,P0.001.The average recoveries less than 80%confirmed by Tg were 0%(0/40),27.5%(11/40),35%(14/40),42.5%(17/40),62.5%(25/40)and 67.5%(27/40),respectively.The percentage of recovery less than 80%of different concentrations of TgAb in maternal serum was statistically different
14、(2=51.134,P0.001),and showed an increasing trend with the increase of TgAb concentration(2=48.363,P0.001).ConclusionWhen TgAb in pregnant women was negative,the detection results of Tg would be unaffected.When TgAb was positive,the higher the concentration,the stronger the interference to Tg,making
15、the lower result.Due to the high positive rate of TgAb in pregnant women,it is recommended to jointly detect TgAb for comprehensive judgment during Tg testing.Keywords:pregnant women;hyroglobulin antibody;thyroglobulin 甲状腺球蛋白(thyroglobulin,Tg)是甲状腺上皮细胞分泌的大分子糖蛋白,储存在滤泡腔中,具有很好的甲状腺组织的特异性。Tg 检测在良性和恶性甲状腺疾病
16、的鉴别诊断、甲状腺癌术后随访中有重要意义1。目前 Tg 检测绝大部分采用全自动化学发光分析仪,主要检测平台包括贝克曼、罗氏和西门子等。随着新一代超敏 Tg 检测试剂盒的应用,化学发光法检测 Tg 的功能灵敏度已达到0.1 ng/ml。然而,方法学的改进仍然无法完全消除患者内源性的甲状腺球蛋白抗体(thyroglobulin antibody,TgAb)对 Tg 测定的干扰,导致 Tg 检测结果不准确2。TgAb 在人群中约有 10%的阳性率,而女性更高3。孕妇人群中 TgAb 的阳性率以及其体内不同浓度的 TgAb 对 Tg 检测的影响,尚未见报道。本研究通过回顾性分析我院 68 955 例门诊孕检的孕妇 TgAb 的结果数据,分析了孕妇群体中 TgAb 的阳性率,同时通过 Tg 确证血清回收实验(CLSI EP7-A2),探讨了孕妇体内不同浓度的TgAb 对 Tg 检测的影响。1材料和方法1.1研究对象回顾性分析 2020 年 10 月 2021年 12 月在西北妇女儿童医院进行孕检的 68 955 例孕妇 TgAb 和 Tg 检测结果,其年龄范围为 1940岁,平 均 年 龄 29