Endocrinology and Metabolism

Original Articles

Thyroid
Thyroid Hormone Profile and Its Prognostic Impact on the Coronavirus Disease 2019 in Korean Patients: Jiyeon Ahn, Min Kyung Lee, Jae Hyuk Lee, Seo Young Sohn; Endocrinol Metab. 2021;36(4):769-777. Published online August 27, 2021; DOI: https://doi.org/10.3803/EnM.2021.1109

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Background
Data on the association between coronavirus disease 2019 (COVID-19) and thyroid have been reported, including overt thyrotoxicosis and suppression of thyroid function. We aimed to evaluate the thyroid hormone profile and its association with the prognosis of COVID-19 in Korean patients.
Methods
The clinical data of 119 patients with COVID-19, admitted in the Myongji Hospital, Goyang, South Korea, were retrospectively evaluated. The thyroid hormone profiles were analyzed and compared based on disease severity (non-severe disease vs. severe to critical disease). Clinical outcomes were analyzed according to the tertiles of thyroid hormones.
Results
Of the 119 patients, 76 (63.9%) were euthyroid, and none presented with overt thyroid dysfunction. Non-thyroidal illness syndrome was the most common manifestation (18.5%), followed by subclinical thyrotoxicosis (14.3%) among patients with thyroid dysfunction. Thyroid stimulating hormone (TSH) and triiodothyronine (T3) levels were significantly lower in patients with severe to critical disease than in those with non-severe disease (P<0.05). Patients in the lowest T3 tertile (<0.77 ng/mL) had higher rates of mechanical ventilation, intensive care unit admission, and death than those in the middle and highest (>1.00 ng/mL) T3 tertiles (P<0.05). COVID-19 patients in the lowest T3 tertile were independently associated with mortality (hazard ratio, 5.27; 95% confidence interval, 1.09 to 25.32; P=0.038) compared with those in the highest T3 tertile.
Conclusion
Thyroid dysfunction is common in COVID-19 patients. Changes in serum TSH and T3 levels may be important markers of disease severity in COVID-19. Decreased T3 levels may have a prognostic significance in COVID-19 related outcome.

Citations

Citations to this article as recorded by

The prevalence of thyroid disorders in COVID-19 patients: a systematic review and meta-analysis
Sadra Ashrafi, Hossein Hatami, Razieh Bidhendi-Yarandi, Mohammad Hossein Panahi
BMC Endocrine Disorders.2024;[Epub] CrossRef
Thyroid Stimulating Hormone as a Possible Additional COVID-19 Outcome Marker
Anamarija Zrilic Vrkljan, Ana Majic Tengg, Tanja Palaversa, Srecko Marusic, Lana Ruzic, Ines Bilic-Curcic, Maja Cigrovski Berkovic
Medicina.2024; 60(2): 314. CrossRef
Effect of Hypothalamic Adrenal Axis and Thyroid Function Alterations on Prognosis of Critically Ill COVID-19 Patients
Muhammet KORKUSUZ, Sulbiye KARABURGU, Tayfun ET, Rafet YARIMOĞLU, Nuh KUMRU
Namık Kemal Tıp Dergisi.2024; 12(1): 17. CrossRef
Thyroxine changes in COVID-19 pandemic: A systematic review and meta-analysis
Ziqi Li, Pengwei Hou, Shuwen Mu, Renzhi Wang, Hui Miao, Ming Feng, He Wang, Wentai Zhang, Yihao Chen, Tianshun Feng, Shousen Wang, Yi Fang
Frontiers in Endocrinology.2023;[Epub] CrossRef
The Influence of SARS-CoV-2 Infection on the Thyroid Gland
Aleksandra Piekarska, Marta Góral, Marta Kozula, Aleksandra Jawiarczyk-Przybyłowska, Katarzyna Zawadzka, Marek Bolanowski
Biomedicines.2023; 11(2): 614. CrossRef
Thyroid Function Abnormalities and Outcomes in Hospitalized Patients with COVID-19 Infection: A Cross-Sectional Study
Deepika Patel, Dukhabandhu Naik, Sadishkumar Kamalanathan, Kadhiravan Tamilarasu, Jayaprakash Sahoo, Ayan Roy, Chandhana Merugu, Varun Suryadevara
Hormone and Metabolic Research.2023; 55(03): 169. CrossRef
The Spectrum of Thyroid Function Tests and Autoantibodies During Hospitalization and After Six Months of Discharge in COVID-19 Patients: Does COVID-19 Trigger Autoimmunity?
Ziynet Alphan Uc, Pinar Yagcı, Zelal Adibelli, Cevdet Duran
Endocrine Research.2023; 48(2-3): 44. CrossRef
Transient low T3 syndrome in patients with COVID-19: a new window for prediction of disease severity
Mingyao Zhong, Yue Gao, Hongling Hu, Xuan Zhu, Lulu Gan, Ling Li, Cheng Xiang, Yimin Yan, Zhe Dai
Frontiers in Endocrinology.2023;[Epub] CrossRef
The Association Between COVID-19 and Thyroxine Levels: A Meta-Analysis
Yiru Chen, Xiuneng Li, Yu Dai, Jingjing Zhang
Frontiers in Endocrinology.2022;[Epub] CrossRef
The New Entity of Subacute Thyroiditis amid the COVID-19 Pandemic: From Infection to Vaccine
Mihaela Popescu, Adina Ghemigian, Corina Maria Vasile, Andrei Costache, Mara Carsote, Alice Elena Ghenea
Diagnostics.2022; 12(4): 960. CrossRef
Potential of Endogenous Oxytocin in Endocrine Treatment and Prevention of COVID-19
Stephani C. Wang, Fengmin Zhang, Hui Zhu, Haipeng Yang, Yang Liu, Ping Wang, Vladimir Parpura, Yu-Feng Wang
Frontiers in Endocrinology.2022;[Epub] CrossRef
The Association Between FT3 With the Outcome and Inflammation/Coagulopathy/Fibrinolysis of COVID-19
Jiayi Deng, Siye Zhang, Fei Peng, Quan Zhang, Yi Li, Yanjun Zhong
Frontiers in Endocrinology.2022;[Epub] CrossRef
Primary hypothyroidism with an episode of ventricular tachycardia in a patient with COVID-19
Pin-Hsu Liao, Yu-Cheng Cheng, Po-Yu Liu, I-Te Lee
Medicine.2022; 101(25): e29243. CrossRef
Low triiodothyronine syndrome is associated with stroke‐associated pneumonia
Huijun Chen, Minjie Xu, Yezhi Huang, Jincai He, Wenwei Ren
European Journal of Clinical Investigation.2022;[Epub] CrossRef
Association of thyroid dysfunction and COVID-19: A systematic review and meta-analysis
Mohammad Darvishi, Mohammad Reza Nazer, Hamze Shahali, Majid Nouri
Frontiers in Endocrinology.2022;[Epub] CrossRef
The prognostic utility of serum thyrotropin in hospitalized Covid-19 patients: statistical and machine learning approaches
E. Pappa, P. Gourna, G. Galatas, M. Manti, A. Romiou, L. Panagiotou, R. Chatzikyriakou, N. Trakas, G. Feretzakis, C. Christopoulos
Endocrine.2022; 80(1): 86. CrossRef
Thyrotropin Levels in Patients with Coronavirus Disease 2019: Assessment during Hospitalization and in the Medium Term after Discharge
Abdallah Al-Salameh, Noémie Scherman, Imane Adda, Juliette André, Yoann Zerbib, Julien Maizel, Jean-Daniel Lalau, Etienne Brochot, Claire Andrejak, Rachel Desailloud
Life.2022; 12(12): 2014. CrossRef
COVID-19 and thyroid function: What do we know so far?
Camila Lüdke Rossetti, Juliana Cazarin, Fabio Hecht, Fabyan Esberard de Lima Beltrão, Andrea Cláudia Freitas Ferreira, Rodrigo Soares Fortunato, Helton Estrela Ramos, Denise Pires de Carvalho
Frontiers in Endocrinology.2022;[Epub] CrossRef

Clinical Study
Subclinical Hypothyroidism Affects the Long-Term Outcomes of Patients Who Undergo Coronary Artery Bypass Grafting Surgery but Not Heart Valve Surgery: Hana Kim, Sung Hye Kong, Jae Hoon Moon, Sang Yoon Kim, Kay-Hyun Park, Jun Sung Kim, Joong Haeng Choh, Young Joo Park, Cheong Lim; Endocrinol Metab. 2020;35(2):308-318. Published online June 24, 2020; DOI: https://doi.org/10.3803/EnM.2020.35.2.308

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Background
The aim of this study was to determine the associations between subclinical hypothyroidism (SCH) and long-term cardiovascular outcomes after coronary artery bypass grafting (CABG) or heart valve surgery (HVS).
Methods
We retrospectively reviewed and compared all-cause mortality, cardiovascular mortality, and cardiovascular events in 461 patients who underwent CABG and 104 patients who underwent HVS.
Results
During a mean±standard deviation follow-up duration of 7.6±3.8 years, there were 187 all-cause deaths, 97 cardiovascular deaths, 127 major adverse cardiovascular events (MACE), 11 myocardial infarctions, one unstable angina, 70 strokes, 30 hospitalizations due to heart failure, 101 atrial fibrillation, and 33 coronary revascularizations. The incidence of all-cause mortality after CABG was significantly higher in patients with SCH (n=36, 55.4%) than in euthyroid patients (n=120, 30.3%), with a hazard ratio of 1.70 (95% confidence interval, 1.10 to 2.63; P=0.018) after adjustment for age, sex, current smoking status, body mass index, underlying diseases, left ventricular dysfunction, and emergency operation. Interestingly, low total triiodothyronine (T3) levels in euthyroid patients who underwent CABG were significantly associated with increased risks of all-cause mortality, cardiovascular mortality, and MACE, but those associations were not observed in HVS patients. Both free thyroxine and thyroid-stimulating hormone levels in euthyroid patients were not related with any cardiovascular outcomes in either the CABG or HVS group.
Conclusion
SCH or low total T3 might be associated with a poor prognosis after CABG, but not after HVS, implying that preoperative thyroid hormonal status may be important in ischemic heart disease patients.

Citations

Citations to this article as recorded by

Subclinical hypothyroidism and clinical outcomes after cardiac surgery: A systematic review and meta-analysis
Michele Dell’Aquila, Camilla S. Rossi, Tulio Caldonazo, Gianmarco Cancelli, Lamia Harik, Giovanni J. Soletti, Kevin R. An, Jordan Leith, Hristo Kirov, Mudathir Ibrahim, Michelle Demetres, Arnaldo Dimagli, Mohamed Rahouma, Mario Gaudino
JTCVS Open.2024; 18: 64. CrossRef
The Association Between Hypothyroidism Treatment and Mortality in Patients Hospitalized in Surgical Wards
Hiba Masri-Iraqi, Yaron Rudman, Carmel Friedrich Dubinchik, Idit Dotan, Talia Diker-Cohen, Liat Sasson, Tzipora Shochat, Ilan Shimon, Eyal Robenshtok, Amit Akirov
Endocrine Research.2023; 48(2-3): 68. CrossRef
Mid-term outcomes of patients with subclinical hypothyroidism after coronary bypass surgery
Dong Zhao, Wei Zhao, Chuangshi Wang, Fei Xu, Wei Zhao, Xieraili Tiemuerniyazi, Hao Ma, Wei Feng
Interdisciplinary CardioVascular and Thoracic Surgery.2023;[Epub] CrossRef
Thyroid Pathology in High-Risk Cardiac Surgery Patients with Coronary Artery Disease
Olena K. Gogayeva, Anatoliy V. Rudenko, Vasyl V. Lazoryshynets, Serhii A. Rudenko, Tetiana A. Andrushchenko
Ukrainian Journal of Cardiovascular Surgery.2022; 30(1 (46)): 9. CrossRef
High-TSH Subclinical Hypothyroidism Is Associated With Postoperative Mortality in Acute Type A Aortic Dissection
Shi-Pan Wang, Yuan Xue, Hai-Yang Li, Wen-Jian Jiang, Hong-Jia Zhang
Frontiers in Endocrinology.2022;[Epub] CrossRef
Triiodothyronine improves contractile recovery of human atrial trabeculae after hypoxia/reoxygenation
Petra Kleinbongard, Philipp Kuthan, Chantal Eickelmann, Philipp Jakobs, Joachim Altschmied, Judith Haendeler, Arjang Ruhparwar, Matthias Thielmann, Gerd Heusch
International Journal of Cardiology.2022; 363: 159. CrossRef
Hypothyroidism Is Correlated with Ventilator Complications and Longer Hospital Days after Coronary Artery Bypass Grafting Surgery in a Relatively Young Population: A Nationwide, Population-Based Study
Jiun-Yu Lin, Pei-Chi Kao, Yi-Ting Tsai, Chi-Hsiang Chung, Wu-Chien Chien, Chih-Yuan Lin, Chieh-Hua Lu, Chien-Sung Tsai
Journal of Clinical Medicine.2022; 11(13): 3881. CrossRef
Minor perturbations of thyroid homeostasis and major cardiovascular endpoints—Physiological mechanisms and clinical evidence
Patrick Müller, Melvin Khee-Shing Leow, Johannes W. Dietrich
Frontiers in Cardiovascular Medicine.2022;[Epub] CrossRef
Subclinical Hypothyroidism: Prevalence, Health Impact, and Treatment Landscape
Won Sang Yoo, Hyun Kyung Chung
Endocrinology and Metabolism.2021; 36(3): 500. CrossRef

Development of Competitive Enzyme - Linked Immunosorbent Assay for the Measurenment of Total Triiodothyronine in Serum.: Myoung Lyeh Park, Youn Kyu Kim, Chang Kyu Kim, Jong Bae Kim; J Korean Endocr Soc. 1996;11(4):447-454. Published online November 7, 2019

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Abstract PDF: Background
Triiodothyronine(T3) is a hormone secreted from thyroid gland which exerts a stimulating effect on metabolism. The disorder of thyroid system brings about several serious diseases like hypothymidism or hyperthyroidism. Therefore, the determination of T in blood is very important on monitoring thyroid function. Methods: Rabbit anti-T3 antibody was generated by immunization of T-BSA as an immunogen and purified hom antisera using Affi-gel protein A kit. The titer and specificity of purified antibody were characterized. To detect T3, competitive ELISA was performed using anti-T3 antibody and T3-HRP conjugate which was synthesized by glutaraldehyde method. The sensitivity and precision assay wer~e deterrnined and compared with that of RIA. Results: The titer of purified anti-T3 antibody was about 1:100 and the optimal dilution of T3- HRP conjugate was 1:1000. When the standard curve was constructed by ELISA, its sensitivity was about 0.5ng/ml. The eoefficient variations of intra- and inter-assay were 4.9~9.3% and 7.5~13.8%, respectively. The results obtained by ELISA and RIA correlated well with each other(n =50, r= 0.97), The linear regression equation was y= 1.09*0.08(P<0.01). Conclusion: We successfully developed a method for the measurement of T3 on ELISA which was based on competitive reaction between antigen(T3) and enzyme labeled antigen(T3-HRP). These results demonstrated that competitive ELISA is a convenient, fast, reproducible and aecurate method for the determinstion of T in serum and can be used as practical alternative to RIA.

Clinical Study
Triiodothyronine Levels Are Independently Associated with Metabolic Syndrome in Euthyroid Middle-Aged Subjects: Hye Jeong Kim, Ji Cheol Bae, Hyeong Kyu Park, Dong Won Byun, Kyoil Suh, Myung Hi Yoo, Jae Hyeon Kim, Yong-Ki Min, Sun Wook Kim, Jae Hoon Chung; Endocrinol Metab. 2016;31(2):311-319. Published online May 13, 2016; DOI: https://doi.org/10.3803/EnM.2016.31.2.311

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Background

Recent studies have shown an association between thyroid hormone levels and metabolic syndrome (MetS) among euthyroid individuals; however, there have been some inconsistencies between studies. Here, we evaluated the relationship between thyroid hormone levels and MetS in euthyroid middle-aged subjects in a large cohort.

Methods

A retrospective analysis of 13,496 euthyroid middle-aged subjects who participated in comprehensive health examinations was performed. Subjects were grouped according to thyroid stimulating hormone, total triiodothyronine (T3), total thyroxine (T4), and T3-to-T4 ratio quartile categories. We estimated the odds ratios (ORs) for MetS according to thyroid hormone quartiles using logistic regression models, adjusted for potential confounders.

Results

Of the study patients, 12% (n=1,664) had MetS. A higher T3 level and T3-to-T4 ratio were associated with unfavourable metabolic profiles, such as higher body mass index, systolic and diastolic blood pressure, triglycerides, fasting glucose and glycated hemoglobin, and lower high density lipoprotein cholesterol levels. The proportion of participants with MetS increased across the T3 quartile categories (P for trend <0.001) and the T3-to-T4 ratio quartile categories (P for trend <0.001). The multi-variate-adjusted OR (95% confidence interval) for MetS in the highest T3 quartile group was 1.249 (1.020 to 1.529) compared to the lowest T3 quartile group, and that in the highest T3-to-T4 ratio quartile group was 1.458 (1.141 to 1.863) compared to the lowest T3-to-T4 ratio quartile group, even after adjustment for potential confounders.

Conclusion

Serum T3 levels and T3-to-T4 ratio are independently associated with MetS in euthyroid middle-aged subjects. Longitudinal studies are needed to define this association and its potential health implications.

Citations

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Case Report

A Case of Primary Hypothyroidism with Anti-Triiodothyronine Autoantibody.: Jae Ho Park, Ji Hoon Ahn, Mi Hee Kang, Jong Chul Won, Kyung Wook Lee, Yeo Joo Kim, Ji Oh Mok, Hyeong Kyu Park, Chul Hee Kim, Sang Jin Kim, Dong Won Byun, Kyo Il Suh, Myung Hi Yoo; J Korean Endocr Soc. 2006;21(5):428-432. Published online October 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.5.428

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Abstract PDF

Antithyroid hormone autoantibodies can be present in the sera of patients with thyroid and non-thyroid disorders. Antithyroid hormone autoantibodies in a patient's serum interfere with radioimmunoassay of thyroid hormones. Clinically, this interference can result in discordance between the serum thyroid hormone levels and the clinical features of the patient, which can lead to misdiagnosis or inappropriate treatment. We experienced a woman who had primary hypothyroidism with unexpectedly high concentrations of serum total triiodothyronine (T(3)) and free T(3), and she had been treated for Graves' disease in the past. Through the use of a polyethylene glycol precipitation method, we detected the anti-triiodothyronine autoantibodies in her serum. We report on this case along with a review of the related literature.

Citations

Citations to this article as recorded by

Thyroxine (T4) Autoantibody Interference of Free T4 Concentration Measurement in a Patient With Hashimoto’s Thyroiditis
Mi-Na Lee, Soo-Youn Lee, Kyu Yeon Hur, Hyung-Doo Park
Annals of Laboratory Medicine.2017; 37(2): 169. CrossRef

Original Article

A Case of Hashimotos Thyroiditis with Anti-Triiodothyronine Autoantibody.: Yun Ey Chung, Jeong Hee Han, Seong Jin Lee, Won Ki Min, Ki Young Park, Kun Ku Park, Dae Hyunk Moon, Il Min Ahn; J Korean Endocr Soc. 2001;16(2):245-251. Published online April 1, 2001

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Abstract PDF: Autoantibodies against thyroid hormones can be detected in the sera of patients with both thyroidal and non-thyroidal disorders. These antibodies interfere with the radioimmunoassay of serum total and free thyroid hormone concentrations, resulting in a discrepancy between the measured hormone levels and clinical features. This can in turn lead to an erroneous diagnosis and patients may receive unnecessary treatment from physicians who are unaware of the presence of the autoantibodies. We experienced a woman having Hashimotos' thyroiditis with a spurious elevation of total T3 and free T3 values according to one-step analog-tracer radioimmunoassay who was had been treated as Graves' disease in past. Through the use of a polyethylene glycol precipitation method, she was subsequently revealed to have anti-triiodothyronine autoantibodies. We report this case with a review of related literature.

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