Ontology highlight
ABSTRACT: Objective
Although research suggests a close association between maternal thyroid function and birth outcomes, no clear conclusion has been reached. We aimed to explore this potential association in a retrospective cohort study.Methods
This study included 8985 mother-child dyads. The maternal serum free tetraiodothyronine (FT4), thyroid-stimulating hormone (TSH), and thyroid peroxidase antibody (TPO Ab) concentrations and birth outcome data were reviewed from medical records. Subjects with TPO Ab concentrations of >34 and ?34 IU/ml were classified into the TPO Ab positivity (+) and TPO Ab negativity (-) groups, respectively.Results
Compared with subjects in the normal group (0.1 ? TSH < 2.5 mIU/L and TPO Ab-), those with TSH concentrations of 2.5-4.0 mIU/L and TPO Ab- had a 0.65-fold lower risk of low birth weight (LBW). In contrast, those with TSH concentrations of >4.0 mIU/L, regardless of the TPO Ab status, had a 2.01-fold increased risk of LBW. Subclinical hypothyroidism, regardless of the TPO Ab status, was associated with a 1.94-fold higher risk of LBW when compared with that in subjects with euthyroidism and TPO Ab-. No other significant associations were observed.Conclusion
A maternal TSH concentration of 2.5-4.0 mIU/L was associated with a lower risk of LBW when combined with TPO Ab-, whereas subjects with a TSH concentration of >4.0 mIU/L had an increased risk of LBW. Subclinical hypothyroidism appears to be associated with a higher risk of LBW.
SUBMITTER: Chen GD
PROVIDER: S-EPMC7892893 | biostudies-literature | 2020
REPOSITORIES: biostudies-literature
Chen Geng-Dong GD Pang Ting-Ting TT Lu Xia-Fen XF Li Peng-Sheng PS Zhou Zi-Xing ZX Ye Shao-Xin SX Yang Jie J Shen Xiu-Yin XY Lin Dong-Xin DX Fan Da-Zhi DZ Lu De-Mei DM Liu Zheng-Ping ZP
Frontiers in endocrinology 20210205
<h4>Objective</h4>Although research suggests a close association between maternal thyroid function and birth outcomes, no clear conclusion has been reached. We aimed to explore this potential association in a retrospective cohort study.<h4>Methods</h4>This study included 8985 mother-child dyads. The maternal serum free tetraiodothyronine (FT4), thyroid-stimulating hormone (TSH), and thyroid peroxidase antibody (TPO Ab) concentrations and birth outcome data were reviewed from medical records. Sub ...[more]