Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia

Abstract 374 pregnant women with isolated hypothyroxinemia (IH) who were ≤ 20 weeks were included retrospectively in this study. Based on the confirmed gestational age and the use of levothyroxine (LT4), the patients were divided into the treated group (T1 group) and untreated group (C1 group) in fi...

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Main Authors: Dong Liu, Yajuan Xu, Jingjing Li, Xin Tian, Lin Hu, Zongzong Sun, Yanjie Ban, Miao Zhang, Lulu Hu, Chenchen Zhang, Yixin Wang, Pengkun Lin
Format: Article
Language:English
Published: Nature Portfolio 2025-04-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-024-84866-3
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author Dong Liu
Yajuan Xu
Jingjing Li
Xin Tian
Lin Hu
Zongzong Sun
Yanjie Ban
Miao Zhang
Lulu Hu
Chenchen Zhang
Yixin Wang
Pengkun Lin
author_facet Dong Liu
Yajuan Xu
Jingjing Li
Xin Tian
Lin Hu
Zongzong Sun
Yanjie Ban
Miao Zhang
Lulu Hu
Chenchen Zhang
Yixin Wang
Pengkun Lin
author_sort Dong Liu
collection DOAJ
description Abstract 374 pregnant women with isolated hypothyroxinemia (IH) who were ≤ 20 weeks were included retrospectively in this study. Based on the confirmed gestational age and the use of levothyroxine (LT4), the patients were divided into the treated group (T1 group) and untreated group (C1 group) in first trimester (≤ 13+ 6 weeks), the treated group(T2 group) and untreated group (C2 group) in second trimester (14–20 weeks). Data on thyroid function and lipid indices was collected both before and after LT4 treatment. To compare the thyroid function, lipid indices and pregnancy outcomes after LT4 treatment. There was a negative correlation between FT4 levels and TC and LDL levels in the first trimester (P<0.05). FT4 and HDL levels in T1 group were significantly increased, and TSH, TC, TG and LDL levels were decreased, compared to C1 group (P < 0.05). FT4 levels in T2 group were higher than C2 group, and there was no significant difference in other indicators. The risk of spontaneous abortion, gestational diabetes mellitus (GDM) and macrosomia in T1 group was significantly decreased (P < 0.05), and there was no significant difference between T2 and C2 groups. Thus, LT4 treatment can improve the level of FT4 and lipids and reduce adverse pregnancy outcomes in women with IH in the first trimester.
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spelling doaj-art-e00b1df15e1a498f8021d9e881ddb8062025-08-20T01:56:01ZengNature PortfolioScientific Reports2045-23222025-04-011511810.1038/s41598-024-84866-3Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemiaDong Liu0Yajuan Xu1Jingjing Li2Xin Tian3Lin Hu4Zongzong Sun5Yanjie Ban6Miao Zhang7Lulu Hu8Chenchen Zhang9Yixin Wang10Pengkun Lin11Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou UniversityAbstract 374 pregnant women with isolated hypothyroxinemia (IH) who were ≤ 20 weeks were included retrospectively in this study. Based on the confirmed gestational age and the use of levothyroxine (LT4), the patients were divided into the treated group (T1 group) and untreated group (C1 group) in first trimester (≤ 13+ 6 weeks), the treated group(T2 group) and untreated group (C2 group) in second trimester (14–20 weeks). Data on thyroid function and lipid indices was collected both before and after LT4 treatment. To compare the thyroid function, lipid indices and pregnancy outcomes after LT4 treatment. There was a negative correlation between FT4 levels and TC and LDL levels in the first trimester (P<0.05). FT4 and HDL levels in T1 group were significantly increased, and TSH, TC, TG and LDL levels were decreased, compared to C1 group (P < 0.05). FT4 levels in T2 group were higher than C2 group, and there was no significant difference in other indicators. The risk of spontaneous abortion, gestational diabetes mellitus (GDM) and macrosomia in T1 group was significantly decreased (P < 0.05), and there was no significant difference between T2 and C2 groups. Thus, LT4 treatment can improve the level of FT4 and lipids and reduce adverse pregnancy outcomes in women with IH in the first trimester.https://doi.org/10.1038/s41598-024-84866-3HypothyroxinemiaLipidsLevothyroxinePregnancy outcomes
spellingShingle Dong Liu
Yajuan Xu
Jingjing Li
Xin Tian
Lin Hu
Zongzong Sun
Yanjie Ban
Miao Zhang
Lulu Hu
Chenchen Zhang
Yixin Wang
Pengkun Lin
Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
Scientific Reports
Hypothyroxinemia
Lipids
Levothyroxine
Pregnancy outcomes
title Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
title_full Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
title_fullStr Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
title_full_unstemmed Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
title_short Effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
title_sort effect of levothyroxine treatment on serum lipids and pregnancy outcomes in pregnant women with isolated hypothyroxinemia
topic Hypothyroxinemia
Lipids
Levothyroxine
Pregnancy outcomes
url https://doi.org/10.1038/s41598-024-84866-3
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