Different Thyroidal Responses to Human Chorionic Gonadotropin Under Different Thyroid Peroxidase Antibody and/or Thyroglobulin Antibody Positivity Conditions During the First Half of Pregnancy

Thyroid : Official Journal of the American Thyroid Association
Yuanyuan HouZ Shan

Abstract

Thyroid peroxidase antibody (TPOAb) positivity can attenuate gestational thyroid responses to human chorionic gonadotropin (hCG) during pregnancy, whereas the effects of thyroglobulin antibodies (TgAb) remain unknown. The aim of our study was to explore the thyroid response to hCG in women with thyrotropin (TSH) levels within the method-specific reference range under different conditions of thyroid autoimmunity. The study screened 822 women at 7-20 weeks of gestation using the pregnancy-specific reference range for TSH. Serum TSH, free thyroxine (fT4), TPOAb, TgAb, and β-hCG levels were measured using electrochemiluminescence immunoassays. The enrolled pregnant women were subdivided into four subgroups based on TPOAb/TgAb positivity: co-positive for TPOAb and TgAb (group 1), isolated TPOAb positive (group 2), isolated TgAb positive (group 3), and co-negative for TPOAb and TgAb (group 4). TSH was negatively associated with hCG in all four groups (p < 0.05). fT4 was positively associated with hCG in groups 3 and 4 (p < 0.01) but not in groups 1 (p = 0.096) and 2 (p = 0.758). Group 2 was further stratified into tertiles according to TPOAb concentrations. No negative TSH/hCG association was observed in the middle- and upper-tertile...Continue Reading

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Citations

Jan 7, 2020·Thyroid : Official Journal of the American Thyroid Association·Chrysoula Dosiou
Nov 25, 2019·The Journal of Clinical Endocrinology and Metabolism·Xiaodong SunYongping Liu
Oct 17, 2019·Endocrine·Zhongyan Shan, Weiping Teng
Jan 6, 2021·Clinical Immunology : the Official Journal of the Clinical Immunology Society·Qian ZhuAi-Hua Liao

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