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Exploration of thyroglobulin as a biomarker of iodine status in iodine-sufficient and mildly iodine-deficient pregnant women

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dc.contributor.author Dineva, Mariana
dc.contributor.author Rayman, Margaret P.
dc.contributor.author Levie, Deborah
dc.contributor.author Hunziker, Sandra
dc.contributor.author Guxens Junyent, Mònica
dc.contributor.author Peeters, Robin P.
dc.contributor.author Murcia, Mario
dc.contributor.author Rebagliato, Marisa
dc.contributor.author Irizar, Amaia
dc.contributor.author Jimeno-Romero, Alba
dc.contributor.author Sunyer, Jordi
dc.contributor.author Korevaar, Tim I. M.
dc.contributor.author Bath, Sarah C.
dc.date.accessioned 2023-05-23T06:05:41Z
dc.date.available 2023-05-23T06:05:41Z
dc.date.issued 2023
dc.identifier.citation Dineva M, Rayman MP, Levie D, Hunziker S, Guxens M, Peeters RP, et al. Exploration of thyroglobulin as a biomarker of iodine status in iodine-sufficient and mildly iodine-deficient pregnant women. Eur J Nutr. 2023 Oct;62(7):2139-54. DOI: 10.1007/s00394-023-03131-x
dc.identifier.issn 1436-6215
dc.identifier.uri http://hdl.handle.net/10230/56930
dc.description Includes supplementary materials for the online appendix.
dc.description.abstract Urinary iodine-to-creatinine ratio (UI/Creat) reflects recent iodine intake but has limitations for assessing habitual intake. Thyroglobulin (Tg) concentration, which increases with thyroid size, appears to be an indicator of longer-term iodine status in children and adults, however, less is known in pregnancy. This study investigated the determinants of serum-Tg in pregnancy and its use as an iodine-status biomarker in settings of iodine-sufficiency and mild-to-moderate deficiency. Stored blood samples and existing data from pregnant women from the Netherlands-based Generation R (iodine-sufficient) and the Spain-based INMA (mildly-to-moderately iodine-deficient) cohorts were used. Serum-Tg and iodine status (as spot-urine UI/Creat) were measured at median 13 gestational weeks. Using regression models, maternal socio-demographics, diet and iodine-supplement use were investigated as determinants of serum-Tg, as well as the association between UI/Creat and serum-Tg. Median serum-Tg was 11.1 ng/ml in Generation R (n = 3548) and 11.5 ng/ml in INMA (n = 1168). When using 150 µg/g threshold for iodine deficiency, serum-Tg was higher in women with UI/Creat < 150 vs ≥ 150 µg/g (Generation R, 12.0 vs 10.4 ng/ml, P = 0.010; INMA, 12.8 vs 10.4 ng/ml, P < 0.001); after confounder adjustment, serum-Tg was still higher when UI/Creat < 150 µg/g (regression coefficients: Generation R, B = 0.111, P = 0.050; INMA, B = 0.157, P = 0.010). Iodine-supplement use and milk intake were negatively associated with serum-Tg, whereas smoking was positively associated. The association between iodine status and serum-Tg was stronger in the iodine-deficient cohort, than in the iodine-sufficient cohort. Serum-Tg might be a complementary (to UI/Creat) biomarker of iodine status in pregnancy but further evidence is needed.
dc.description.sponsorship This study was part of the EUthyroid project which has received funding from the European Union´s Horizon 2020 research and innovation programme under grant agreement No 634453; this funding was used to support Tg measurements, data harmonisation and initial data analysis. The writing of the manuscript and final data analysis were completed as part of a grant from The Academy of Medical Sciences Springboard programme [SBF005\1097]. 1) EUthyroid project: This project has received funding from the European Union´s Horizon 2020 research and innovation programme under grant agreement No 634453. We would like to thank Prof Michael Zimmermann (ETH Zurich) for leading the laboratory analyses of thyroglobulin as part of the EUthyroid project. 2) Generation R: The Generation R Study is conducted by the Erasmus Medical Center in close collaboration with the Faculty of Social Sciences of the Erasmus University Rotterdam, the Municipal Health Service Rotterdam area, Rotterdam, and the Stichting Trombosedienst & Artsenlaboratorium Rijnmond (STAR-MDC), Rotterdam. The Generation R Study is supported by the Erasmus Medical Center, Rotterdam, the Erasmus University Rotterdam, the Netherlands Organization for Health Research and Development (ZonMw), the Netherlands Organization for Scientific Research (NWO), the Ministry of Health, Welfare and Sport. A grant from the Sophia Children’s Hospital Research Funds supports the neurodevelopmental work on thyroid; Robin P. Peeters is supported by a clinical fellowship from ZonMw, project number 90700412. 3) INMA: This study was funded by grants from UE (FP7-ENV-2011 cod 282957 and HEALTH.2010.2.4.5-1) and Spain: Instituto de Salud Carlos III (Red INMA G03/176; CB06/02/0041; FIS-FEDER: PI041436, PI05/1079, PI06/0867, PI081151, FIS-and PS09/00090, PI11/01007, PI11/02591, PI11/02038, PI13/1944, PI13/2032, PI14/00891, PI14/01687, and PI16/1288; Miguel Servet-FEDER CP11/00178, CP15/00025, and CPII16/00051, MS13/00054), Generalitat Valenciana: FISABIO (UGP 15-230, UGP-15-244, and UGP-15-249), Generalitat de Catalunya-CIRIT 1999SGR 00241, Fundació La marató de TV3 (090430), Department of Health of the Basque Government (2005111093 and 2009111069), and the Provincial Government of Gipuzkoa (DFG06/004 and DFG08/001). We acknowledge support from the Spanish Ministry of Science and Innovation and the State Research Agency through the “Centro de Excelencia Severo Ochoa 2019-2023” Program (CEX2018-000806-S), and support from the Generalitat de Catalunya through the CERCA Program. Mònica Guxens is funded by a Miguel Servet II fellowship (CPII18/00018) awarded by the Spanish Institute of Health Carlos III.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Springer
dc.relation.ispartof Eur J Nutr. 2023 Oct;62(7):2139-54
dc.rights This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.title Exploration of thyroglobulin as a biomarker of iodine status in iodine-sufficient and mildly iodine-deficient pregnant women
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1007/s00394-023-03131-x
dc.subject.keyword Thyroglobulin
dc.subject.keyword Iodine
dc.subject.keyword Biomarkers
dc.subject.keyword Pregnancy
dc.subject.keyword INMA
dc.subject.keyword Generation R
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/634453
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/282957
dc.relation.projectID info:eu-repo/grantAgreement/2PE/CEX2018-000806-S
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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