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Orós M, Perejón D, Serna MC, Siscart J, Leon J, Ortega M, Salinas-Roca B. Prevalence and risk factors of gestational diabetes in the health region of Lleida: a retrospective observational cohort study. J Endocrinol Invest 2023; 46:2639-2646. [PMID: 37330946 PMCID: PMC10632204 DOI: 10.1007/s40618-023-02120-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/20/2023] [Indexed: 06/20/2023]
Abstract
BACKGROUND Diabetes is a very common metabolic condition during pregnancy. The number of cases increases with age and obesity. The prevalence of pre-gestational diabetes and gestational diabetes (GD) differs between different ethnic groups. OBJECTIVE The aim of the study was to analyse the prevalence of pre-gestational diabetes and GD in the health region of Lleida. We also studied the GD risk factors during pregnancy according to the country of origin of the pregnant woman. METHODS We performed a retrospective observational cohort study among pregnant women between 2012 and 2018 in the health region of Lleida. A multivariate model was performed with the different variables analysed by calculating the regression coefficient and its 95% confidence interval (CI). RESULTS In our sample of 17,177 pregnant women, we observed a prevalence of pre-gestational diabetes and GD of 8.2% and 6.5%, respectively. We found a relationship of gestational diabetes with different factors: age, with 6.8% in 30-34 year-old women and 11.3% in women over 35 (OR 1.78 and 3.29, respectively); overweight, with 8.29% (OR 1.89); and obesity, with 12.9% (OR 3.15). Finally, women from Asia and the Middle East and the Maghreb had a higher risk of diabetes, with 12.2% (OR 2.1) and 9.91% (OR 1.3), respectively, and Sub-Saharan women had a lower risk of it 6.07% (OR 0.71). CONCLUSIONS GD has different risk factors, such as age, overweight, and obesity. Non-related conditions include hypothyroidism, arterial hypertension, and dyslipidaemia. Finally, pregnant women from the Maghreb, and Asia and the Middle East, are at higher risk of developing diabetes during pregnancy; meanwhile, Sub-Saharan origin is protector factor.
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Affiliation(s)
- M Orós
- Institut d'Investigació en Atenció Primària IDIAP Jordi Gol, Institut Català de la Salut, Lleida, Spain
- Centre de Salut Eixample, Institut Català de la Salut, Lleida, Spain
- Departament de Medicina Familiar, Universitat de Lleida, Lleida, Spain
| | - D Perejón
- Institut d'Investigació en Atenció Primària IDIAP Jordi Gol, Institut Català de la Salut, Lleida, Spain
- Centre de Salut Eixample, Institut Català de la Salut, Lleida, Spain
- Departament de Medicina Familiar, Universitat de Lleida, Lleida, Spain
| | - M C Serna
- Institut d'Investigació en Atenció Primària IDIAP Jordi Gol, Institut Català de la Salut, Lleida, Spain
- Centre de Salut Eixample, Institut Català de la Salut, Lleida, Spain
- Departament de Medicina Familiar, Universitat de Lleida, Lleida, Spain
| | - J Siscart
- Institut d'Investigació en Atenció Primària IDIAP Jordi Gol, Institut Català de la Salut, Lleida, Spain
- Centre de Salut Eixample, Institut Català de la Salut, Lleida, Spain
- Departament de Medicina Familiar, Universitat de Lleida, Lleida, Spain
| | - J Leon
- Departament d'Endocrinologia i Nutrició, Hospital Universitari Arnau de Vilanova, Lleida, Spain
- Grup d'investigació en Immunologia i Metabolisme (GRIM), Institut de Recerca Biomèdica, Lleida, Spain
| | - M Ortega
- Institut d'Investigació en Atenció Primària IDIAP Jordi Gol, Institut Català de la Salut, Lleida, Spain
- Departament de Medicina Familiar, Universitat de Lleida, Lleida, Spain
- Grup de Recerca Terapèutica en Atenció Primària (GRETAPS), Institut Català de la Salut, Lleida, Spain
| | - B Salinas-Roca
- Department of Nursing and Physiotherapy, University of Lleida, Montserrat Roig 2, 25198, Lleida, Spain.
- Global Research On Wellbeing (GRoW) Research Group, Blanquerna School of Health Science, Ramon Llull University, Padilla, 326-332, 08025, Barcelona, Spain.
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Alotaibi EA, AlHaidar AM, Alotaibi SA, Alshehri NA, Alotaibi RA, Bashumeel YY, Nassar R, Batais MA. Assessment of Thyroid Dysfunction Among Pregnant Women With Pre-Existing Diabetes Mellitus or Gestational Diabetes Mellitus. Cureus 2023; 15:e44390. [PMID: 37779813 PMCID: PMC10541241 DOI: 10.7759/cureus.44390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
Objective This study investigates the prevalence and risk of thyroid disturbances in pregnant women with pre-existing diabetes mellitus (DM) or gestational diabetes mellitus (GDM) in a tertiary hospital setting in Riyadh, SA. This research's findings may help identify potential risk factors associated with thyroid disturbances during pregnancy and facilitate early diagnosis for at-risk pregnant women. Subjects and methods A retrospective cross-sectional study was conducted at an endocrinology clinic between October 2018 and December 2021 to evaluate the electronic records of pregnant women with DM or GDM who had documented normal thyroid function before pregnancy. Results Three hundred ninety-six files that met the selection criteria were deeply investigated and analyzed. The analysis showed that 378 (95.5%) patients were of Saudi nationality, and the mean age in years ± SD for the selected patients was 34.23 ± 5.468. The prevalence of obesity was 63.7%, with a mean body mass index (BMI) of 32.78 ± 6.78 kg/m2. The patients in this study were categorized into three groups based on their type of DM: 57 were diagnosed with type 1 DM (14.4%), 120 with type 2 DM (30.3%), and 219 with GDM (55.3%). The study identified 43 patients (10.85%) with subclinical hypothyroidism and 74 (18.69%) with hypothyroidism. Among the remaining patients, thyroid function was within the normal range for 264 (66.67%). The study also identified eight patients (2.02%) with subclinical hyperthyroidism and seven (1.77%) with hyperthyroidism. The prevalence of thyroid dysfunction was reported at 33.4%, with most of the dysfunction observed in the GDM group (20.7%). By comparison, the type 1 DM and type 2 DM groups presented a lower prevalence of thyroid dysfunction, accounting for only 4.1% and 8.6%, respectively. Conclusions Hypothyroidism, both clinical and subclinical, is more prevalent among patients with GDM than individuals with type 1 and type 2 DM. Research suggests a greater risk of developing hypothyroidism in patients with an increased BMI and among those older during pregnancy.
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Affiliation(s)
- Eman A Alotaibi
- Department of Family and Community Medicine, Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, SAU
| | | | - Shahad A Alotaibi
- College of Medicine, Sulaiman Al Rajhi University, Al Bukayriah, SAU
| | - Norah A Alshehri
- Department of Family and Community Medicine, College of Medicine, King Saud University, Riyadh, SAU
| | - Raghad A Alotaibi
- College of Medicine, Sulaiman Al Rajhi University, Al Bukayriah, SAU
| | - Yaser Y Bashumeel
- Research, Endocrine and Oncology Division, Department of Surgery, Tulane University School of Medicine, New Orleans, USA
| | - Reema Nassar
- College of Medicine, Omdurman Islamic University, Khartoum, SDN
| | - Mohammed A Batais
- Family Medicine, Diabetes & Chronic Disease Management, King Khalid University Hospital, Riyadh, SAU
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Li P, Cui J, Li L, Chen X, Ouyang L, Fan J, Lin S. Association between isolated maternal hypothyroxinemia during the first trimester and adverse pregnancy outcomes in Southern Chinese women: a retrospective study of 7051 cases. BMC Pregnancy Childbirth 2022; 22:866. [DOI: 10.1186/s12884-022-05194-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 11/08/2022] [Indexed: 11/25/2022] Open
Abstract
Abstract
Background
The association between isolated maternal hypothyroxinemia (IMH) and adverse pregnancy outcomes is still controversial. This study aimed to evaluate the association between IMH during the first trimester and adverse pregnancy outcomes in southern Chinese women.
Methods
This was a hospital-based, retrospective cohort study. The records of 7051 women, including 1337 IMH women and 5714 euthyroid women who had a singleton pregnancy and accepted routine prenatal service at the Third Affiliated Hospital of Sun Yat-Sen University from January 2015 to September 2018, were extracted from the electronic medical records system in this study. Thyroid functions [thyroid-stimulating hormone (TSH), free thyroxine (fT4) and anti-thyroperoxidase autoantibody (TPO-Ab)] had to be measured before 13 weeks and 6 days of gestation. The chi-square test and multivariate logistic regression analysis were applied to evaluate the association between IMH during the first trimester and adverse pregnancy outcomes.
Results
Prepregnancy obesity [prepregnancy body mass index (preBMI) ≥ 25 kg/m2] was found to be more common in the IMH group (11.2% vs. 6.1%) (P < 0.05). The prevalence of gestational diabetes mellitus (GDM), postpartum haemorrhage (PPH), macrosomia and large for gestational age (LGA) was higher in the IMH group. However, after using multivariate logistic regression analysis to adjust for confounders (maternal age, educational levels and preBMI), only LGA was shown to be associated with an increased risk in IMH women [adjusted OR: 1.27 (95% CI 1.044–1.566)]. The prevalence of preterm delivery (either < 37 or < 34 weeks), gestational hypertension, preeclampsia, placenta previa, placental abruption, premature rupture of membrane (PROM), intrauterine growth restriction (IUGR), polyhydramnios, stillbirth, small for gestational age (SGA) and low Apgar score did not increase.
Conclusion
IMH during the first trimester did not increase any risk of adverse pregnancy outcomes in southern Chinese women except LGA.
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Wang Y, Sun F, Wu P, Huang Y, Ye Y, Yang X, Yuan J, Liu Y, Zeng H, Wen Y, Qi X, Yang CX, Wang Y, Liu G, Chen D, Li L, Pan XF, Pan A. A Prospective Study of Early-pregnancy Thyroid Markers, Lipid Species, and Risk of Gestational Diabetes Mellitus. J Clin Endocrinol Metab 2022; 107:e804-e814. [PMID: 34453541 DOI: 10.1210/clinem/dgab637] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/23/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT While the associations between thyroid markers and gestational diabetes mellitus (GDM) have been extensively studied, the results are inconclusive and the mechanisms remain unclear. OBJECTIVE We aimed to investigate the prospective associations of thyroid markers in early gestation with GDM risk, and examine the mediating effects through lipid species. METHODS This study included 6068 pregnant women from the Tongji-Shuangliu Birth Cohort. Maternal serum thyroid markers (free triiodothyronine (fT3), free thyroxine (fT4), thyroid-stimulating hormone, thyroid peroxidase antibody, and thyroglobulin antibody) were measured before 15 weeks. Deiodinase activity was assessed by fT3/fT4 ratio. Plasma lipidome were quantified in a subset of 883 participants. RESULTS Mean age of the participants was 26.6 ± 3.7 years, and mean gestational age was 10.3 ± 2.0 weeks. Higher levels of fT4 were associated with a decreased risk of GDM (OR = 0.73 comparing the extreme quartiles; 95% CI 0.54, 0.98, Ptrend = .043), while higher fT3/fT4 ratio was associated with an increased risk of GDM (OR = 1.43 comparing the extreme quartiles; 95% CI 1.06, 1.93, Ptrend = .010) after adjusting for potential confounders. Multiple linear regression suggested that fT3/fT4 ratio was positively associated with alkylphosphatidylcholine 36:1, phosphatidylethanolamine plasmalogen 38:6, diacylglyceride 18:0/18:1, sphingomyelin 34:1, and phosphatidylcholine 40:7 (false discovery rate [FDR] adjusted P < .05). Mediation analysis indicated 67.9% of the association between fT3/fT4 ratio and GDM might be mediated through the composite effect of these lipids. CONCLUSION Lower concentration of serum fT4 or higher fT3/fT4 ratio in early pregnancy was associated with an increased risk of GDM. The association of fT3/fT4 ratio with GDM was largely mediated by specific lipid species.
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Affiliation(s)
- Yi Wang
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Fengjiang Sun
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 511436, China
| | - Ping Wu
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yichao Huang
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 511436, China
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Yi Ye
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xue Yang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Jiaying Yuan
- Department of Science and Education, Shuangliu Maternal and Child Health Hospital, Chengdu 610200, China
| | - Yan Liu
- Department of Obstetrics and Gynecology, Shuangliu Maternal and Child Health Hospital, Chengdu 610200, China
| | - Huayan Zeng
- Nutrition Department, Shuangliu Maternal and Child Health Hospital, Chengdu 610200, China
| | - Ying Wen
- Department of Communicable Diseases Control and Prevention, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Xiaorong Qi
- Department of Gynecology and Obstetrics, West China Second Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Chun-Xia Yang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Yixin Wang
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Gang Liu
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Da Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 511436, China
| | - Liangzhong Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Xiong-Fei Pan
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - An Pan
- Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Trouva A, Alvarsson M, Calissendorff J, Åsvold BO, Vanky E, Hirschberg AL. Thyroid Status During Pregnancy in Women With Polycystic Ovary Syndrome and the Effect of Metformin. Front Endocrinol (Lausanne) 2022; 13:772801. [PMID: 35265033 PMCID: PMC8898827 DOI: 10.3389/fendo.2022.772801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/27/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Polycystic ovary syndrome (PCOS) and hypothyroidism are related conditions, and both are associated with adverse pregnancy outcomes. Knowledge is lacking about the complex interaction between thyroid status and PCOS during pregnancy. We investigated the thyroid status and its association with pregnancy complications in PCOS, and in relation to metformin treatment. DESIGN Post-hoc analyses of two randomized, double-blind, placebo-controlled trials. METHODS 288 pregnant women with PCOS were randomized to treatment with metformin or placebo from first trimester to delivery. We measured serum levels of thyroid stimulating hormone (TSH) and free thyroxine (fT4) at gestational week (gw) 5-12, 19, 32 and 36 and related to metformin treatment and pregnancy complications. Thyroid peroxidase antibodies (TPO-ab) were analyzed at inclusion and at gw 36. RESULTS The overall prevalence of subclinical and overt hypothyroidism was 1.5% and 0%, respectively. The TSH level was not affected by metformin, whereas fT4 was significantly higher in the metformin group with less decrease throughout pregnancy compared to placebo, p<0.001. A lower decrease in fT4 during pregnancy correlated to less weight gain (r= -0.17, p=0.020) and tended to be associated with reduced odds ratio for gestational diabetes (OR 0.85 per 1 pmol/L, 95% CI 0.71;1.02). CONCLUSIONS In women with PCOS, metformin treatment during pregnancy was associated with less decrease in fT4 compared to placebo, while it did not affect TSH. A smaller decrease in fT4 correlated to less weight gain and tended to be associated with a lower risk of gestational diabetes. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov, identifier NCT00159536 (The PregMet study); identifier NCT03259919 (The pilot study).
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Affiliation(s)
- Anastasia Trouva
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Internal Medicine, Section of Diabetes and Endocrinology, Södersjukhuset, Stockholm, Sweden
- *Correspondence: Anastasia Trouva,
| | - Michael Alvarsson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Jan Calissendorff
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Bjørn Olav Åsvold
- Kristian Gerhard (K.G.) Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Norges Teknisk-Naturvitenskapelige Universitet (NTNU), Norwegian University of Science and Technology, Trondheim, Norway
- Helseundersøkelsen i Nord-Trøndelag (HUNT) Research Center, Department of Public Health and Nursing, Norges Teknisk-Naturvitenskapelige Universitet (NTNU), Norwegian University of Science and Technology, Levanger, Norway
- Department of Endocrinology, Clinic of Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Eszter Vanky
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Obstetrics and Gynaecology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Angelica Lindén Hirschberg
- Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Department of Gynecology and Reproductive Medicine, Karolinska University Hospital, Stockholm, Sweden
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Potential Risk Factors for Isolated Hypothyroxinemia in Women of Childbearing Age-Results from Retrospective Analysis. J Clin Med 2021; 10:jcm10225384. [PMID: 34830664 PMCID: PMC8617839 DOI: 10.3390/jcm10225384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 11/17/2022] Open
Abstract
Isolated hypothyroxinemia (IH) unfavorably affects reproduction. This study aimed to evaluate retrospectively if any routinely measured clinical/laboratory parameters are associated with IH among women of childbearing age hospitalized in the endocrine department. A group of 466 female non-pregnant inpatients (age range 13-57 years) was considered. IH (decreased free thyroxine (FT4) with normal TSH) was found in 8/466 patients (1.72%). Vitamin D deficiency (<30 ng/mL) was found in all patients with IH, whereas severe Vitamin D deficiency (<20 ng/mL) was found in 5/6. Vitamin D concentration was lower in IH females. FT4 concentration was lower in patients with severe vitamin D deficiency and correlated positively with vitamin D concentration. Insulin resistance index (IRI) was increased (>1.25) in 5/6 patients with IH. IRI was higher in IH patients and it was the only independent linear factor for IH in the univariate regression. FT4 concentration was lower in patients with increased IRI and correlated negatively with IRI. FT4 concentration correlated negatively with body mass index (BMI) and LDL cholesterol or triglycerides, and positively with HDL cholesterol or HDLC/cholesterol ratio. Vitamin D deficiency, insulin resistance and increased BMI (as potential causative factors), and abnormal lipid profile (as a possible consequence), are associated with IH in women of childbearing age. Eliminating risk factors for hypothyroxinemia may improve reproductive health.
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Tang L, Li P, Zhou H, Li L. A longitudinal study of thyroid markers during pregnancy and the risk of gestational diabetes mellitus and post-partum glucose metabolism. Diabetes Metab Res Rev 2021; 37:e3441. [PMID: 33486811 PMCID: PMC8243952 DOI: 10.1002/dmrr.3441] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 12/07/2020] [Accepted: 01/02/2021] [Indexed: 12/11/2022]
Abstract
AIMS To determine the relationship between thyroid markers during pregnancy and gestational diabetes mellitus (GDM) or post-partum glucose metabolism. MATERIALS AND METHODS Based on pregnancy 75-g oral glucose tolerance test (OGTT) results, 1467 subjects were grouped into normal glucose tolerance (NGTp; n = 768) and GDM (n = 699) groups. Furthermore, based on post-partum 75-g OGTT results, 286 GDM subjects, screened for glucose metabolism after delivery, were grouped into NGTd (n = 241) and abnormal glucose tolerance (AGT; n = 45) groups. RESULTS Maternal age, family history of diabetes, acanthosis nigricans, previous adverse pregnancy outcomes and caesarean section incidence, and thyroid positive antibody rates were higher in the GDM group than in the NGTp group. In the first trimester, free triiodothyronine (FT3), thyroid peroxidase antibody (TPOAb) and thyroglobulin antibody (TgAb) levels were higher in the GDM group than in the NGTp group. In the second trimester, free thyroxine (FT4) levels were lower and TPOAb and TgAb levels were higher in the GDM group than in the NGTp group. After adjusting for confounding factors, FT3, TPOAb and TgAb (first trimester), and FT4, TPOAb and TgAb (second trimester) were risk factors for GDM. TPOAb and TgAb levels were higher in the AGT group than in the NGTd group and were potential predictors of abnormal post-partum glucose tolerance. CONCLUSIONS GDM risk significantly increased with increased FT3 (first trimester), TPOAb and TgAb (first and second trimesters) or with decreased FT4 (second trimester). Presence of thyroid antibodies predicted post-partum glucose abnormalities in subjects with GDM.
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Affiliation(s)
- Lei Tang
- Department of EndocrinologyShengjing Hospital of China Medical UniversityShenyangLiaoningChina
| | - Ping Li
- Department of EndocrinologyShengjing Hospital of China Medical UniversityShenyangLiaoningChina
| | - Hua Zhou
- Department of NephrologyShengjing Hospital of China Medical UniversityShenyangLiaoningChina
| | - Ling Li
- Department of EndocrinologyShengjing Hospital of China Medical UniversityShenyangLiaoningChina
- Liaoning Province Key Laboratory of Endocrine DiseasesShenyangLiaoningChina
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Safian S, Esna-Ashari F, Borzouei S. Thyroid Dysfunction in Pregnant Women with Gestational Diabetes Mellitus. Curr Diabetes Rev 2020; 16:895-899. [PMID: 31870270 DOI: 10.2174/1573399816666191223111833] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/30/2019] [Accepted: 12/09/2019] [Indexed: 12/30/2022]
Abstract
AIMS Investigation thyroid dysfunction and autoimmunity in pregnant women with gestational diabetes mellitus. BACKGROUND This article was written to evaluate the thyroid function and anti-thyroid peroxidase (anti- TPO) antibodies in pregnant women with gestational diabetes mellitus (GDM). METHODS A total of 252 women with GDM and 252 healthy pregnant women were enrolled. Thyroid tests, including TSH, FreeT3, Free T4, and anti-TPO were performed for all women at 24-28 weeks of gestation. Data analysis was then carried out using SPSS ver. 22. RESULTS There was a significant difference between the experimental group (38.4%) and the control group (14.06%) in terms of the prevalence of subclinical hypothyroidism (p= 0.016). The frequency of anti-TPO was higher in the experimental group than the control group and positive anti-TPO was observed in 18.6% of women with GDM and 10.3% of healthy pregnant women (P= 0.008). CONCLUSION Thyroid disorders are observed in pregnant women with GDM more frequently than healthy individuals and it may be thus reasonable to perform thyroid tests routinely.
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Affiliation(s)
- Shahin Safian
- Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farzaneh Esna-Ashari
- Department of Community Medicine, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Shiva Borzouei
- Department of Endocrinology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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Su X, Zhao Y, Cao Z, Yang Y, Duan T, Hua J. Association between isolated hypothyroxinaemia in early pregnancy and perinatal outcomes. Endocr Connect 2019; 8:435-441. [PMID: 30889550 PMCID: PMC6479197 DOI: 10.1530/ec-19-0088] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 03/19/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND The effect of isolated maternal hypothyroxinaemia (IMH) on pregnancy complications and neonatal outcomes in human beings is still controversial. METHODS This was a retrospective cohort study based on the electronic medical register system. The records of women with a singleton pregnancy who sought antenatal examination between January 2014 and December 2015 at Shanghai First Maternity and Infant Hospital were extracted from the electronic medical records system. Thyroid-stimulating hormone (TSH), free thyroxine (fT4) and anti-thyroperoxidase autoantibody (TPO-Ab) was measured before 20 gestational weeks, and a multiple logistic regression model was used to estimate the odds ratios of pregnancy complications and neonatal outcomes between euthyroid women and those with isolated hypothyroxinaemia. RESULTS A total of 8173 women were included in this study, of whom 342 (4.18%) were diagnosed with IMH. Regression analysis showed that IMH diagnosed in the second trimester (13-20 weeks) was associated with an increased risk of hypertensive disorders of pregnancy (OR = 2.66, 95% CI: 1.38-5.10) and placenta abruption (OR = 3.64, 95% CI: 1.07-12.41), but not with preterm delivery (OR = 1.09, 95% CI: 0.50-2.40), small or large gestational age of infant (OR = 0.91, 95% CI: 0.39-2.12; OR = 1.16, 95% CI: 0.72-1.86), macrosomia (OR = 1.71, 95% CI: 0.95-3.07), gestational diabetes mellitus (OR = 1.36, 95% CI: 0.86-2.15) and placenta previa (OR = 1.62, 95% CI: 0.39-7.37). CONCLUSION IMH could be a risk factor for hypertensive disorders of pregnancy.
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Affiliation(s)
- Xiujuan Su
- Department of Women & Children’s Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yan Zhao
- Department of Women & Children’s Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhijuan Cao
- Department of Women & Children’s Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yingying Yang
- Department of Women & Children’s Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Tony Duan
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jing Hua
- Department of Women & Children’s Health Care, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
- Correspondence should be addressed to J Hua:
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Bell GA, Männistö T, Liu A, Kannan K, Yeung EH, Kim UJ, Suvanto E, Surcel HM, Gissler M, Mills JL. The joint role of thyroid function and iodine concentration on gestational diabetes risk in a population-based study. Acta Obstet Gynecol Scand 2019; 98:500-506. [PMID: 30580457 DOI: 10.1111/aogs.13523] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 12/11/2018] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Iodine is essential for thyroid function, and iodine deficiency during pregnancy is common in Europe and the USA. However, no published studies have examined the role of iodine deficiency in the relation between thyroid function and gestational diabetes mellitus (GDM). MATERIAL AND METHODS We conducted a population-based, nested case-control study within the Finnish Maternity Cohort using pregnancy and perinatal outcome data from the Finnish Maternal Birth Register. We randomly selected 224 GDM cases with singleton pregnancies and 224 controls without GDM from all singleton births occurring in Finland during 2012-2013. Blood was drawn at 10-14 weeks' gestation and analyzed for serum iodide, thyroglobulin, and thyroid-stimulating hormone (TSH) concentrations. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CI) of GDM. RESULTS Very high thyroglobulin concentration (>95% percentile; >83 μg/L) was not associated with significantly altered odds of GDM compared to those with normal levels (OR 0.41; 95% CI: 0.12, 1.38). High concentrations of TSH were also not associated with increased odds of GDM compared to normal levels of TSH (OR 0.45; 95% CI: 0.06, 3.18). Women in the lowest 5th percentile (<1.58 ng/mL) of iodine did not have increased odds of GDM compared to those with iodide in the highest quartile (OR 0.39; 95% CI: 0.11, 1.35). CONCLUSIONS Low levels of iodide and thyroid function in early pregnancy are not associated with increased risk of GDM in this mildly iodine-deficient population.
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Affiliation(s)
- Griffith A Bell
- Division of Intramural Population Health Research, National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Tuija Männistö
- Northern Finland Laboratory Center NordLab, Oulu University and Oulu University Hospital, Oulu, Finland
| | - Aiyi Liu
- Division of Intramural Population Health Research, National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | | | - Edwina H Yeung
- Division of Intramural Population Health Research, National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Un-Jung Kim
- Wadsworth Center, New York State Department of Health, Albany, NY, USA
| | - Eila Suvanto
- Northern Finland Laboratory Center NordLab, Oulu University and Oulu University Hospital, Oulu, Finland
| | - Heljä-Marja Surcel
- Biobank Borealis of Northern Finland, Oulu University Hospital, Oulu, Finland.,Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Mika Gissler
- National Institute of Health and Welfare, Helsinki, Finland.,Karolinska Institute, Stockholm, Sweden
| | - James L Mills
- Division of Intramural Population Health Research, National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
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11
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Drover SSM, Villanger GD, Aase H, Skogheim TS, Longnecker MP, Zoeller RT, Reichborn-Kjennerud T, Knudsen GP, Zeiner P, Engel SM. Maternal Thyroid Function During Pregnancy or Neonatal Thyroid Function and Attention Deficit Hyperactivity Disorder: A Systematic Review. Epidemiology 2019; 30:130-144. [PMID: 30299402 PMCID: PMC6359926 DOI: 10.1097/ede.0000000000000937] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Attention deficit hyperactivity disorder (ADHD) is the most common neurobehavioral disorder in children, yet its etiology is poorly understood. Early thyroid hormone disruption may contribute to the development of ADHD. Disrupted maternal thyroid hormone function has been associated with adverse neurodevelopmental outcomes in children. Among newborns, early-treated congenital hypothyroidism has been consistently associated with later cognitive deficits. METHODS We systematically reviewed literature on the association between maternal or neonatal thyroid hormones and ADHD diagnosis or symptoms. We searched Embase, Pubmed, Cinahl, PsycInfo, ERIC, Medline, Scopus, and Web of Science for articles published or available ahead of print as of April 2018. RESULTS We identified 28 eligible articles: 16 studies of maternal thyroid hormones, seven studies of early-treated congenital hypothyroidism, and five studies of neonatal thyroid hormones. The studies provide moderate evidence for an association between maternal thyroid hormone levels and offspring ADHD, some evidence for an association between early-treated congenital hypothyroidism and ADHD, and little evidence for an association between neonatal thyroid hormone levels and later ADHD. CONCLUSIONS The reviewed articles suggest an association between maternal thyroid function and ADHD, and possibly between early-treated congenital hypothyroidism and ADHD. Study limitations, however, weaken the conclusions in our systematic review, underlining the need for more research. Importantly, there was much variation in the measurement of thyroid hormone function and of ADHD symptoms. Recommendations for future research include using population-based designs, attending to measurement issues for thyroid hormones and ADHD, considering biologically relevant covariates (e.g., iodine intake), and assessing nonlinear dose-responses.
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Affiliation(s)
- Samantha S M Drover
- From the Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC
| | - Gro D Villanger
- Norwegian Institute of Public Health, Physical and Mental health, Oslo, Norway
| | - Heidi Aase
- Norwegian Institute of Public Health, Physical and Mental health, Oslo, Norway
| | - Thea S Skogheim
- Norwegian Institute of Public Health, Physical and Mental health, Oslo, Norway
| | - Matthew P Longnecker
- National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC
| | - R Thomas Zoeller
- Biology Department, University of Massachusetts-Amherst, Amherst, MA
| | | | - Gun P Knudsen
- Norwegian Institute of Public Health, Physical and Mental health, Oslo, Norway
| | - Pål Zeiner
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Stephanie M Engel
- From the Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC
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12
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Rawal S, Tsai MY, Hinkle SN, Zhu Y, Bao W, Lin Y, Panuganti P, Albert PS, Ma RCW, Zhang C. A Longitudinal Study of Thyroid Markers Across Pregnancy and the Risk of Gestational Diabetes. J Clin Endocrinol Metab 2018; 103:2447-2456. [PMID: 29889229 PMCID: PMC6276672 DOI: 10.1210/jc.2017-02442] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 04/25/2018] [Indexed: 12/20/2022]
Abstract
CONTEXT T3 is the biologically active thyroid hormone involved in glucose metabolism. The free T3 (fT3)/free T4 (fT4) ratio, a marker indicating conversion of fT4 to fT3, is also implicated in glucose homeostasis. OBJECTIVE To examine associations of fT3 and the fT3/fT4 ratio with gestational diabetes mellitus (GDM). DESIGN In a case-control study, thyroid markers (fT3, fT4, TSH) were measured and the fT3/fT4 ratio was derived across four visits in pregnancy, including first (gestational weeks 10 to 14) and second (weeks 15 to 26) trimester. Conditional logistic regression adjusting for thyroid autoimmunity status and major GDM risk factors estimated trimester-specific associations of thyroid markers with subsequent GDM risk. SETTING Twelve US clinical centers. PARTICIPANTS One hundred seven GDM cases and 214 non-GDM controls from a multiracial pregnancy cohort of 2802 women. MAIN OUTCOME MEASURES GDM diagnosis ascertained from medical records. RESULTS Both fT3 and the fT3/fT4 ratio were positively associated with GDM: adjusted OR (95% CI) comparing the highest vs lowest fT3 quartile was 4.25 (1.67, 10.80) at the first trimester and 3.89 (1.50, 10.10) at the second trimester. Similarly, the corresponding risk estimates for the fT3/fT4 ratio were 8.63 (2.87, 26.00) and 13.60 (3.97, 46.30) at the first and second trimester, respectively. Neither TSH nor fT4 was significantly associated with GDM. CONCLUSIONS Higher fT3 levels, potentially resulting from de novo synthesis or increased fT4 to fT3 conversion, may be an indicator of GDM risk starting early in pregnancy.
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Affiliation(s)
- Shristi Rawal
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland
- Department of Nutritional Sciences, School of Health Professions, Rutgers University, Newark, New Jersey
| | - Michael Y Tsai
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Stefanie N Hinkle
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland
| | - Yeyi Zhu
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Wei Bao
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Yuan Lin
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland
| | - Pranati Panuganti
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland
| | - Paul S Albert
- Biostatistics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
| | - Ronald C W Ma
- Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, China
| | - Cuilin Zhang
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland
- Correspondence and Reprint Requests: Cuilin Zhang, MD, PhD, Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Drive, MSC 7004, Bethesda, Maryland 20817. E-mail:
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13
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Popova PV, Shilova ES, Tkachuk AS, Dronova AV, Anopova AD, Nikolaeva AE, Grineva EN. First trimester thyroid function in pregnant women residing in Saint Petersburg (Russia): reference values and risk of gestational diabetes. DIABETES MELLITUS 2018. [DOI: 10.14341/dm9283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background. Subclinical hypothyroidism during pregnancy and gestational diabetes mellitus (GDM) is known to be associated with maternal and child morbidity. The concept of subclinical dysfunction of the thyroid gland in pregnant women depends on the population-specific and trimester-specific reference values so fixed universal cutoff concentrations for thyroid-stimulating hormone (TSH) that were recommended earlier now are put under the question. Population-specific and trimester-specific reference values have not been defined for pregnant women residing in Saint Petersburg. The data concerning the association of maternal thyroid status with GDM development are controversial.
Aims. The aim of the study was to determine the reference values of TSH and free thyroxin (fT4) in the first trimester of pregnancy in women living in St. Petersburg, and to assess the relationship between thyroid status and the risk of subsequent development of GDM.
Materials and methods. The levels of TSH, fT4 and thyroid peroxidase antibodies (TPO-Ab) were analyzed in 503 pregnant women before the 14th week of gestation. The women underwent oral glucose tolerance test (OGTT) at 2428 weeks to find out those with GDM. The association between thyroid function, thyroid autoimmunity and the risk of GDM we estimated.
Results. The reference values for TSH were 0.07 4.40 mU /L, and for fT4 11.7 20.3 pmol/L. The prevalence of subclinical hypothyroidism in the 503 pregnant women was 16.9% according to the diagnostic criteria of TSH 2.5 mIU / L and 3.8% using our calculated reference interval. Hypothyroxinemia was registered in 5,3% using reference values recommended by diagnostic tests manufacturer and in 2,8% according to our calculated reference interval for fT4. GDM was diagnosed in 23% of women. Logistic regression analysis showed associations of hypothyroxinemia and TPO-Ab-positivity with the increased risk of GDM that remained significant after adjustments on age and body mass index (BMI) [adjusted OR (95% CI) = 7.39 (1.2742.93) for hypothyroxinemia, p=0.026; and adjusted OR (95% CI) = 2.02 (1.014.04) for TPO-Ab-positivity, p=0.047).
Conclusions. Reference intervals for first trimester TSH and fT4 have been established for pregnant women living in St. Petersburg. Hypothyroxinemia and TPO-Ab-positivity were associated with the increased risk of GDM.
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Hua X, Cao XY, Wang XL, Sun P, Chen L. Exposure of Pregnant Mice to Triclosan Causes Insulin Resistance via Thyroxine Reduction. Toxicol Sci 2017; 160:150-160. [DOI: 10.1093/toxsci/kfx166] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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15
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Gorar S, Abanonu GB, Uysal A, Erol O, Unal A, Uyar S, Cekin AH. Comparison of thyroid function tests and blood count in pregnant women with versus without gestational diabetes mellitus. J Obstet Gynaecol Res 2017; 43:848-854. [PMID: 28194837 DOI: 10.1111/jog.13280] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 09/20/2016] [Accepted: 12/09/2016] [Indexed: 12/30/2022]
Abstract
AIM The aim of this study was to compare thyroid function and complete blood count parameters in pregnant women with versus without gestational diabetes mellitus (GDM). METHODS A total of 269 pregnant women patients with (n = 110, GDM group) or without (n = 159, non-GDM group) GDM were included in this study. Data on age, rate of cesarean section, birthweight of neonate, hemogram, and thyroid function tests were collected. Multivariate analysis was performed to determine factors predicting increased risk of GDM. RESULTS Rate of cesarean section (70.9 vs 57.2%, P = 0.022), median (max-min) age (33.0 [26.0] vs 26.0 [20.0] years, P < 0.001), platelet count (246.7 ± 68.3 vs 227.8 ± 64.2 ×103 /μL, P = 0.021) and thyroid-stimulating hormone (1.3 [97.6] vs 1.0 [4.1] μIU/mL, P = 0.028) were significantly higher in the GDM than in the non-GDM group; whereas mean platelet volume (10.4 [5.3] vs 10.6 [5.6] fL, P = 0.031) and free triiodothyronine (FT3) (2.9 [3.6] vs 3.1 [3.0] pg/mL, P < 0.001) levels were significantly lower in the GDM than in the non-GDM group. Older age (odds ratio, 1.281; 95% confidence interval, 1.182-1.389, P < 0.001) and lower FT3 levels (odds ratio, 0.295; 95% confidence interval, 0.149-0.586, P < 0.001) were independently associated with increased risk of GDM. CONCLUSION Our findings revealed that lower FT3 levels and older age predict the likelihood of developing GDM in euthyroid pregnant women, with no influence of other thyroid hormones or blood counts on the risk of GDM.
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Affiliation(s)
- Suheyla Gorar
- Department of Endocrinology and Metabolism, Antalya Training and Research Hospital, Antalya, Turkey
| | - Gul Babacan Abanonu
- Department of Internal Medicine, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - Aysel Uysal
- Department of Obstetrics and Gynecology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Onur Erol
- Department of Obstetrics and Gynecology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Aysun Unal
- Department of Internal Medicine, Antalya Training and Research Hospital, Antalya, Turkey
| | - Seyit Uyar
- Department of Internal Medicine, Antalya Training and Research Hospital, Antalya, Turkey
| | - Ayhan Hilmi Cekin
- Department of Internal Medicine, Antalya Training and Research Hospital, Antalya, Turkey
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16
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Haddow JE, Craig WY, Neveux LM, Palomaki GE, Lambert-Messerlian G, Malone FD, D’Alton ME. Free Thyroxine During Early Pregnancy and Risk for Gestational Diabetes. PLoS One 2016; 11:e0149065. [PMID: 26910563 PMCID: PMC4766100 DOI: 10.1371/journal.pone.0149065] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 01/27/2016] [Indexed: 01/29/2023] Open
Abstract
Several studies have now reported associations between gestational diabetes mellitus (GDM) and low free thyroxine (fT4) during the second and third trimesters, but not in the first trimester. The present study further examines relationships between low fT4, maternal weight, and GDM among women in the FaSTER (First and Second Trimester Evaluation of Risk) trial, in an effort to determine the extent to which thyroid hormones might contribute to causality. The FaSTER cohort includes 9351 singleton, euthyroid women; 272 of these women were subsequently classified as having GDM. Thyrotropin (TSH), fT4, and thyroid antibodies were measured at 11–14 weeks’ gestation (first trimester) and 15–18.9 weeks’ gestation (second trimester). An earlier report of this cohort documented an inverse relationship between fT4 in the second trimester and maternal weight. In the current analysis, women with GDM were significantly older (32 vs. 28 years) and weighed more (75 vs. 64.5 kg). Maternal weight and age (but not TSH) were significantly associated univariately with fT4 (dependent variable), in the order listed. Second trimester fT4 odds ratios (OR) for GDM were 2.06 [95% CI 1.37–3.09] (unadjusted); and 1.89 [95% CI 1.26–2.84] (adjusted). First trimester odds ratios were not significant: OR 1.45 [95%CI 0.97–2.16] (unadjusted) and 1.11 [95% CI 0.74–1.62] (adjusted). The second trimester fT4/GDM relationship thus appeared to strengthen as gestation progressed. In FaSTER, high maternal weight was associated with both low fT4 and a higher GDM rate in the second trimester. Peripheral deiodinase activity is known to increase with high caloric intake (represented by high weight). We speculate that weight-related low fT4 (the metabolically inactive prohormone) is a marker for deiodinase activity, serving as a substrate for conversion of fT4 to free triiodothyronine (fT3), the active hormone responsible for glucose-related metabolic activity.
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Affiliation(s)
- James E. Haddow
- Department of Pathology and Laboratory Medicine, Division of Medical Screening and Special Testing, Women and Infants Hospital and Alpert Medical School of Brown University, Providence, Rhode Island, United States of America
- Savjani Institute for Health Research, Windham, Maine, United States of America
- * E-mail:
| | - Wendy Y. Craig
- Maine Medical Center Research Institute, Scarborough, Maine, United States of America
| | - Louis M. Neveux
- Department of Pathology and Laboratory Medicine, Division of Medical Screening and Special Testing, Women and Infants Hospital and Alpert Medical School of Brown University, Providence, Rhode Island, United States of America
- Savjani Institute for Health Research, Windham, Maine, United States of America
| | - Glenn E. Palomaki
- Department of Pathology and Laboratory Medicine, Division of Medical Screening and Special Testing, Women and Infants Hospital and Alpert Medical School of Brown University, Providence, Rhode Island, United States of America
- Savjani Institute for Health Research, Windham, Maine, United States of America
| | - Geralyn Lambert-Messerlian
- Department of Pathology and Laboratory Medicine, Division of Medical Screening and Special Testing, Women and Infants Hospital and Alpert Medical School of Brown University, Providence, Rhode Island, United States of America
| | - Fergal D. Malone
- Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, University College of Physicians and Surgeons, New York, New York, United States of America
- Department of Obstetrics & Gynecology, Royal College of Surgeons in Ireland, Dublin, Ireland, United Kingdom
| | - Mary E. D’Alton
- Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, University College of Physicians and Surgeons, New York, New York, United States of America
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