Endocrinology and Metabolism

Review Article

Diabetes, Obesity and Metabolism Big Data Articles (National Health Insurance Service Database)
Big Data Research in the Field of Endocrine Diseases Using the Korean National Health Information Database: Sun Wook Cho, Jung Hee Kim, Han Seok Choi, Hwa Young Ahn, Mee Kyoung Kim, Eun Jung Rhee; Endocrinol Metab. 2023;38(1):10-24. Published online February 9, 2023; DOI: https://doi.org/10.3803/EnM.2023.102

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The Korean National Health Information Database (NHID) contains big data combining information obtained from the National Health Insurance Service and health examinations. Data are provided in the form of a cohort, and the NHID can be used to conduct longitudinal studies and research on rare diseases. Moreover, data on the cause and date of death are provided by Statistics Korea. Research and publications based on the NHID have increased explosively in the field of endocrine disorders. However, because the data were not collected for research purposes, studies using the NHID have limitations, particularly the need for the operational definition of diseases. In this review, we describe the characteristics of the Korean NHID, operational definitions of endocrine diseases used for research, and an overview of recent studies in endocrinology using the Korean NHID.

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Associations Between Physical Activity and the Risk of Hip Fracture Depending on Glycemic Status: A Nationwide Cohort Study
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The Journal of Clinical Endocrinology & Metabolism.2024; 109(3): e1194. CrossRef
Weight change in patients with new‐onset type 2 diabetes mellitus and its association with remission: Comprehensive real‐world data
Jinyoung Kim, Bongseong Kim, Mee Kyoung Kim, Ki‐Hyun Baek, Ki‐Ho Song, Kyungdo Han, Hyuk‐Sang Kwon
Diabetes, Obesity and Metabolism.2024; 26(2): 567. CrossRef
Diabetes severity and the risk of depression: A nationwide population-based study
Yunjung Cho, Bongsung Kim, Hyuk-Sang Kwon, Kyungdo Han, Mee Kyoung Kim
Journal of Affective Disorders.2024; 351: 694. CrossRef
Information Bias Might Exaggerate Lung Cancer Risk of Patients With Rheumatoid Arthritis
Nobuyuki Horita, Kaoru Takase-Minegishi
Journal of Thoracic Oncology.2024; 19(2): 348. CrossRef
Diabetes Duration, Cholesterol Levels, and Risk of Cardiovascular Diseases in Individuals With Type 2 Diabetes
Mee Kyoung Kim, Kyu Na Lee, Kyungdo Han, Seung-Hwan Lee
The Journal of Clinical Endocrinology & Metabolism.2024;[Epub] CrossRef
Diabetes severity is strongly associated with the risk of active tuberculosis in people with type 2 diabetes: a nationwide cohort study with a 6-year follow-up
Ji Young Kang, Kyungdo Han, Seung-Hwan Lee, Mee Kyoung Kim
Respiratory Research.2023;[Epub] CrossRef
Research on obesity using the National Health Information Database: recent trends
Eun-Jung Rhee
Cardiovascular Prevention and Pharmacotherapy.2023; 5(2): 35. CrossRef
Pituitary Diseases and COVID-19 Outcomes in South Korea: A Nationwide Cohort Study
Jeonghoon Ha, Kyoung Min Kim, Dong-Jun Lim, Keeho Song, Gi Hyeon Seo
Journal of Clinical Medicine.2023; 12(14): 4799. CrossRef
Risk of Pancreatic Cancer and Use of Dipeptidyl Peptidase 4 Inhibitors in Patients with Type 2 Diabetes: A Propensity Score-Matching Analysis
Mee Kyoung Kim, Kyungdo Han, Hyuk-Sang Kwon, Soon Jib Yoo
Endocrinology and Metabolism.2023; 38(4): 426. CrossRef
Prevalence, Treatment Status, and Comorbidities of Hyperthyroidism in Korea from 2003 to 2018: A Nationwide Population Study
Hwa Young Ahn, Sun Wook Cho, Mi Young Lee, Young Joo Park, Bon Seok Koo, Hang-Seok Chang, Ka Hee Yi
Endocrinology and Metabolism.2023; 38(4): 436. CrossRef
Is Thyroid Dysfunction Associated with Unruptured Intracranial Aneurysms? A Population-Based, Nested Case–Control Study from Korea
Hyeree Park, Sun Wook Cho, Sung Ho Lee, Kangmin Kim, Hyun-Seung Kang, Jeong Eun Kim, Aesun Shin, Won-Sang Cho
Thyroid®.2023; 33(12): 1483. CrossRef
Risk of Cause-Specific Mortality across Glucose Spectrum in Elderly People: A Nationwide Population-Based Cohort Study
Joonyub Lee, Hun-Sung Kim, Kee-Ho Song, Soon Jib Yoo, Kyungdo Han, Seung-Hwan Lee
Endocrinology and Metabolism.2023; 38(5): 525. CrossRef
Risk of depression in patients with acromegaly in Korea (2006-2016): a nationwide population-based study
Shinje Moon, Sangmo Hong, Kyungdo Han, Cheol-Young Park
European Journal of Endocrinology.2023; 189(3): 363. CrossRef
Cumulative effect of impaired fasting glucose on the risk of dementia in middle-aged and elderly people: a nationwide cohort study
Jin Yu, Kyu-Na Lee, Hun-Sung Kim, Kyungdo Han, Seung-Hwan Lee
Scientific Reports.2023;[Epub] CrossRef
Long-Term Cumulative Exposure to High γ-Glutamyl Transferase Levels and the Risk of Cardiovascular Disease: A Nationwide Population-Based Cohort Study
Han-Sang Baek, Bongseong Kim, Seung-Hwan Lee, Dong-Jun Lim, Hyuk-Sang Kwon, Sang-Ah Chang, Kyungdo Han, Jae-Seung Yun
Endocrinology and Metabolism.2023; 38(6): 770. CrossRef
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Jiwon Kim, Namki Hong, Jimi Choi, Ju Hyung Moon, Eui Hyun Kim, Eun Jig Lee, Sin Gon Kim, Cheol Ryong Ku
Endocrinology and Metabolism.2023; 38(6): 690. CrossRef

Original Articles

Thyroid
Immunoglobulin G4-Related Thyroid Disease: A Single-Center Experience and Literature Review: Meihua Jin, Bictdeun Kim, Ahreum Jang, Min Ji Jeon, Young Jun Choi, Yu-Mi Lee, Dong Eun Song, Won Gu Kim; Endocrinol Metab. 2022;37(2):312-322. Published online April 25, 2022; DOI: https://doi.org/10.3803/EnM.2021.1318

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Background
Immunoglobulin G4 (IgG4)-related disease is an entity that can involve the thyroid gland. The spectrum of IgG4-related thyroid disease (IgG4-RTD) includes Hashimoto thyroiditis (HT) and its fibrotic variant, Riedel thyroiditis, as well as Graves’ disease. The early diagnosis of IgG4-RTD is important because it is a medically treatable disease, and a delay in the diagnosis might result in unnecessary surgery. We present a case series of IgG4-RTD with a review of the literature.
Methods
We retrospectively reviewed the clinical presentation and the radiological and pathological findings of patients diagnosed with IgG4-RTD between 2017 and 2021 at a tertiary medical center in Korea. We also conducted a literature review of IgG4-RTD.
Results
Five patients were diagnosed with IgG4-RTD during the study period. The patients’ age ranged from 31 to 76 years, and three patients were men. Most patients visited the clinic for a neck mass, and hypoechogenic nodular lesions were observed on neck ultrasonography. Three patients had IgG4 HT, and two patients had IgG4 Riedel thyroiditis. All patients developed hypothyroidism that necessitated L-thyroxine replacement. The diagnosis of IgG4-RTD was confirmed after a pathological examination of the surgical specimen in the first two cases. However, the early diagnosis was possible after a core needle biopsy in three clinically suspected patients.
Conclusion
The diagnosis of IgG4-RTD requires clinical suspicion combined with serology and histological analyses using IgG4 immunostaining. The early diagnosis of IgG4-RTD is difficult; thus, biopsy with IgG4 immunostaining and serum IgG4 measurements will help diagnose patients suspected of having IgG4-RTD.

Citations

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Are sonographic characteristics of Hashimoto’s thyroiditis related with immunologic parameters? A cross-sectional study
K. Kenarlı, A. B. Bahçecioğlu, Ö. B. Aksu, S. Güllü
Journal of Endocrinological Investigation.2024;[Epub] CrossRef
Reshaping the Concept of Riedel’s Thyroiditis into the Larger Frame of IgG4-Related Disease (Spectrum of IgG4-Related Thyroid Disease)
Mara Carsote, Claudiu Nistor
Biomedicines.2023; 11(6): 1691. CrossRef

Thyroid
Evaluation of Iodine Status among Korean Patients with Papillary Thyroid Cancer Using Dietary and Urinary Iodine: Ji Yeon Choi, Joon-Hyop Lee, YoonJu Song; Endocrinol Metab. 2021;36(3):607-618. Published online June 21, 2021; DOI: https://doi.org/10.3803/EnM.2021.1005

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Background
Concerns have been raised regarding thyroid disorders caused by excessive iodine in Koreans, who have iodine-rich diets. This study evaluated iodine status using dietary iodine intake and urinary iodine in papillary thyroid cancer (PTC) patients.
Methods
Dietary data of PTC patients were assessed using a 24-hour recall and food frequency questionnaire (FFQ), and urinary iodine concentrations (UICs) were also obtained. To compare the iodine status of PTC patients, Korean adults with or without thyroid disease from the Korea National Health and Nutrition Examination Survey, which had 24-hour recall data and urinary iodine measurements, were analyzed.
Results
The median daily iodine intake by 24-hour recall was 341.7 μg/day in PTC patients, similar to the levels of other Korean adults. Based on UICs, the prevalence of excessive iodine was 54.4% in PTC patients, which was similar to the prevalence among subjects with thyroid disease (55.4%) but slightly higher than that in subjects without thyroid disease (47.7%). Based on dietary iodine by 24-hour recall, the prevalence of excessive iodine intake was 7.2%, which was higher than that among subjects with (4.4%) or without (3.9%) thyroid disease. The dietary iodine intake based on 24-hour recall was closely correlated with the UIC (r=0.4826) in PTC patients, but dietary iodine by FFQ was not significantly correlated with either 24-hour recall or UIC-based dietary iodine.
Conclusion
Excessive iodine intake was more common in PTC patients than in subjects without thyroid disease. Further longitudinal research is necessary to elucidate the role of dietary iodine in PTC.

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Association between iodine nutrition and cervical lymph node metastasis of papillary thyroid microcarcinoma
Hengqiang Zhao, Jin Hu, Le Cui, Yiping Gong, Tao Huang
Frontiers in Endocrinology.2023;[Epub] CrossRef
Effect of iodine restriction on short-term changes in thyroid function in patients with subclinical hypothyroidism
Obin Kwon, Dong Yeob Shin, Eun Jig Lee
Journal of Nutrition and Health.2022; 55(2): 250. CrossRef
Iodine nutrition and papillary thyroid cancer
Xueqi Zhang, Fan Zhang, Qiuxian Li, Chuyao Feng, Weiping Teng
Frontiers in Nutrition.2022;[Epub] CrossRef

Review Articles

Thyroid
Best Achievements in Clinical Thyroidology in 2020: Eun Kyung Lee, Young Joo Park; Endocrinol Metab. 2021;36(1):30-35. Published online February 24, 2021; DOI: https://doi.org/10.3803/EnM.2021.103

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This review highlights the most interesting research in thyroidology conducted in 2020. The publications of interest discussed below dealt with the following topics: thyroid dysfunction, risk of thyroid cancer, molecular diagnostics and new therapeutics for thyroid cancer, and thyroid disease in the coronavirus disease 2019 pandemic era.

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Compensation for iodine deficiency conditions with drugs based on duckweed substrate
M. Kh. Sadulaev, M. I. Usmanova, T. T. Tataev, A. M. Inderbiev, A. S.-A. Zhamalullayla, A. Salamova
BIO Web of Conferences.2023; 76: 03002. CrossRef
Use of long non-coding RNAs for the molecular diagnosis of papillary thyroid cancer
Daham Kim, Juyeon Yu, Jiwon Kim, Yoon-a Hwang, Jin Kyong Kim, Cheol Ryong Ku, Jung Hyun Yoon, Jin Young Kwak, Kee-Hyun Nam, Eun Jig Lee
Frontiers in Oncology.2022;[Epub] CrossRef
Ultrasound-Guided Fine-Needle Aspiration with or without Negative Pressure for Different Types of Thyroid Nodules
Qi Zhou, Wenjun Wu, Fang Wang, Xiaohua Gong, Xiaojun Chen
International Journal of General Medicine.2021; Volume 14: 5475. CrossRef

Thyroid
Update on the Management of Thyroid Disease during Pregnancy: Chang Hoon Yim; Endocrinol Metab. 2016;31(3):386-391. Published online August 16, 2016; DOI: https://doi.org/10.3803/EnM.2016.31.3.386

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Thyroid dysfunction during pregnancy can result in serious complications for both the mother and infant; however, these complications can be prevented by optimal treatment of maternal overt thyroid dysfunction. Although several studies have demonstrated that maternal subclinical hypothyroidism is associated with obstetric complications and neurocognitive impairments in offspring, there is limited evidence that levothyroxine treatment can improve these complications. Therefore, most professional societies do not recommend universal screening for thyroid dysfunction during pregnancy, and instead recommend a case-finding approach in which only high-risk women are tested. However, recent studies have estimated that targeted thyroid function testing misses approximately 30% to 55% of hypothyroidism cases in pregnant women, and some associations and researchers have recommended universal screening of pregnant women to facilitate the early detection and treatment of overt hypothyroidism. This review summarizes recent data on thyroid function test changes, thyroid functional disorder management, and thyroid screening during pregnancy.

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The Effect of Inflammatory Markers in the Hemogram Parameters of Pregnant Women with Thyroid Disease on Obstetric and Neonatal Outcomes
Funda DEMİREL, Ünal TURKAY
Düzce Tıp Fakültesi Dergisi.2023; 25(3): 231. CrossRef
Enfermedades tiroideas y embarazo en una unidad de cuidados intensivos. Experiencia 2014-2019
J.G. Vázquez-Rodríguez, A.C. Andrade-Rodríguez
Clínica e Investigación en Ginecología y Obstetricia.2021; 48(3): 100662. CrossRef
Decreased Expression of Ileal Thyroid Hormone Transporters in a Hypothyroid Patient: A Case Report
Chae Won Chung, Eun Young Mo, Gyung Seo Jung, Yoo Hyung Kim, Sun Wook Cho, Do Joon Park, Jeong Mo Bae, Young Joo Park
Frontiers in Endocrinology.2021;[Epub] CrossRef
Tiroidectomía en paciente embarazada con enfermedad de Graves sin respuesta a tratamiento médico: reporte de caso
Elly Morros González, Leonardo Javier Rojas Melo, Viviana Cruz Ramírez, Angélica Imitola
Universitas Médica.2020;[Epub] CrossRef
Thyroid disorders in subfertility and early pregnancy
Samantha Anandappa, Mamta Joshi, Lukasz Polanski, Paul V. Carroll
Therapeutic Advances in Endocrinology and Metabolism.2020; 11: 204201882094585. CrossRef
Addressing thyroid dysfunction in pregnancy
Teodora Onciu, Remus Şipoş
Medic.ro.2020; 3(135): 48. CrossRef
Antenatal/early postnatal hypothyroidism increases the contribution of Rho-kinase to contractile responses of mesenteric and skeletal muscle arteries in adult rats
Dina K. Gaynullina, Svetlana I. Sofronova, Anastasia A. Shvetsova, Ekaterina K. Selivanova, Anna P. Sharova, Andrey A. Martyanov, Olga S. Tarasova
Pediatric Research.2018; 84(1): 112. CrossRef
Voluntary exercise training restores anticontractile effect of NO in coronary arteries of adult rats with antenatal/early postnatal hypothyroidism
D.K. Gaynullina, A.A. Borzykh, S.I. Sofronova, E.K. Selivanova, A.A. Shvetsova, A.A. Martyanov, I.V. Kuzmin, O.S. Tarasova
Nitric Oxide.2018; 74: 10. CrossRef
Impact of positive thyroid autoimmunity on pregnant women with subclinical hypothyroidism
Cristina López-Tinoco, Amparo Rodríguez-Mengual, Almudena Lara-Barea, Julia Barcala, Laura Larrán, Ana Saez-Benito, Manuel Aguilar-Diosdado
Endocrinología, Diabetes y Nutrición (English ed.).2018; 65(3): 150. CrossRef
Impacto de la autoinmunidad antitiroidea positiva en gestantes con hipotiroidismo subclínico
Cristina López-Tinoco, Amparo Rodríguez-Mengual, Almudena Lara-Barea, Julia Barcala, Laura Larrán, Ana Saez-Benito, Manuel Aguilar-Diosdado
Endocrinología, Diabetes y Nutrición.2018; 65(3): 150. CrossRef
Articles inEndocrinology and Metabolismin 2016
Won-Young Lee
Endocrinology and Metabolism.2017; 32(1): 62. CrossRef
Maternal hypothyroidism: An overview of current experimental models
Mahboubeh Ghanbari, Asghar Ghasemi
Life Sciences.2017; 187: 1. CrossRef

Original Article

Thyroid
Cost-of-Illness Trends Associated with Thyroid Disease in Korea: Kyung-Rae Hyun, Sungwook Kang, Sunmi Lee; Endocrinol Metab. 2014;29(3):257-269. Published online September 25, 2014; DOI: https://doi.org/10.3803/EnM.2014.29.3.257

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Background

The purpose of this study is to analyze the scale of and trends associated with the cost-of-illness of thyroid disease in Korea at 2-year intervals during the last 10 years for which data are available.

Methods

Cost-of-illness was estimated in terms of direct and indirect costs. Direct costs include direct medical costs due to hospitalization, outpatient and pharmacy sectors, transportation, and care-giver costs. Indirect costs include future income loss due to premature death and loss of productivity as a result of absence from work.

Results

The cost-of-illness of thyroid disease in Korea was estimated at 224.2 billion won in 2002, 303.4 billion won in 2004, 400.3 billion won in 2006, 570.4 billion won in 2008, and 762.2 billion won in 2010. For example, the cost-of-illness of thyroid disease in 2010 was 3.4 times greater compared to 2002. The direct cost of the total cost-of-illness was 69.7%, which accounted for the highest proportion of costs. Cost-of-illness for individuals between the ages of 30 and 50 accounted for the greatest share of costs.

Conclusion

The cost-of-illness of thyroid disease was relatively large in economically active age groups, and demonstrated a very rapid growth rate compared to other major diseases in Korea. Therefore, we suggest nationwide recognition of the importance of prevention and management of thyroid disease and prioritization of the management of thyroid disease among current and future health promotion policies in Korea.

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Cancer and Mortality Risks of Graves’ Disease in South Korea Based on National Data from 2010 to 2019
Young Ju Choi, Kyungdo Han, Won Kyoung Cho, Min Ho Jung, Byung-Kyu Suh
Clinical Epidemiology.2023; Volume 15: 535. CrossRef
Who loses more? Identifying the relationship between hospitalization and income loss: prediction of hospitalization duration and differences of gender and employment status
Minsung Sohn, Daseul Moon, Patricia O’Campo, Carles Muntaner, Haejoo Chung
BMC Public Health.2022;[Epub] CrossRef
The importance and effectiveness of nutritional counselling in patients with autoimmune thyroid diseases in Poland
Ewa Czubek, Klaudia Alcer, Mirjana Varjacic, Piotr Romaniuk
Cost Effectiveness and Resource Allocation.2022;[Epub] CrossRef
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Eun-Jeong Han, JungSuk Lee, Eunhee Cho, Hyejin Kim
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Triennial Report ofEndocrinology and Metabolism, 2015 to 2017
Eun-Jung Rhee, Hey Yeon Jang, Won-Young Lee
Endocrinology and Metabolism.2018; 33(2): 195. CrossRef
Articles in 'Endocrinology and Metabolism' in 2014
Won-Young Lee
Endocrinology and Metabolism.2015; 30(1): 47. CrossRef
Cost-of-Illness Trend of Thyroid Gland Disease in Korea
Jae Hoon Chung
Endocrinology and Metabolism.2014; 29(3): 248. CrossRef
Letter: Insufficient Experience in Thyroid Fine-Needle Aspiration Leads to Misdiagnosis of Thyroid Cancer (Endocrinol Metab2014;29:293-9, Jung Il Son et al.)
Hyon-Seung Yi, Sihoon Lee
Endocrinology and Metabolism.2014; 29(4): 590. CrossRef

Review Article

Thyroid
Effects of Increased Iodine Intake on Thyroid Disorders: Xin Sun, Zhongyan Shan, Weiping Teng; Endocrinol Metab. 2014;29(3):240-247. Published online September 25, 2014; DOI: https://doi.org/10.3803/EnM.2014.29.3.240

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Iodine is a micronutrient essential for the production of thyroid hormones. Iodine deficiency is the most common cause of preventable mental impairment worldwide. Universal salt iodization (USI) has been introduced in many countries as a cost-effective and sustainable way to eliminate iodine deficiency disorders for more than 25 years. Currently, the relationship between USI and iodine excess has attracted more attention. Iodine excess can lead to hypothyroidism and autoimmune thyroiditis, especially for susceptible populations with recurring thyroid disease, the elderly, fetuses, and neonates. Nationwide USI was introduced in China in 1996. This review focused on the effects of iodine excess worldwide and particularly in China.

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Relationship between Thyroid CT Density, Volume, and Future TSH Elevation: A 5-Year Follow-Up Study
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Hanan Al-Adilah, Martin C. Feiters, Lucy J. Carpenter, Puja Kumari, Carl J. Carrano, Dhia Al-Bader, Frithjof C. Küpper
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Original Article

Measurement of Anti-GAD65 Autoantibodies in Patients with Type 1 Diabetes Mellitus with / without Autoimmune Thyroid Diseases (Immunoblotting followed by Immunoprecipitation).: Yong Soo Park, Hye Won Park, Jin Bae Kim, Dong Sun Kim, Woong Hwan Choi, Tae Hwa Kim, Joon Yong Chung, Sei Won Yang, Won Bae Kim; J Korean Endocr Soc. 2000;15(2):190-203. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Type 1 diabetes mellitus is frequently associated with other autoimmune diseases. The broad concept of polyendocrinopathies takes into consideration that patients affected by at least one endocrine disease may have another autoimmune disorder or express specific autoantibodies. Anti-glutamic acid decarboxylase autoantibodies, now recognized as one of the major serological markers for type 1 diabetes has been reported to be higher in type 1 diabetes patients with autoimmune thyroid diseases (ATD) than in those without ATD. The objective of the present study was to evaluate the prevalences of GAD65 antibodies applying a newly developed assay(anti-GAD65) in type 1 diabetes patients with and without ATD. METHODS: We developed a new anti-GAD65 assay after mammalian expression of a recombinant GAD65 antigen. Since the detection of anti-GAD65 is rather complicated and insensitive due to inherent antigenic difference of antibody recognition in conventional assays, we applied this new approach in measuring anti-GAD autoantibodies and compared the result with ICA and anti-GAD measurement using the purified porcine GAD (anti-GAD) in 109 cases of type 1 diabetes, 29 of whom had concomitant ATD (mean age at diagnosis: 7.9 yr, mean duration of type 1 diabetes: 4.5 yrs). RESULTS: The overall prevalence of anti-GAD65 antibodies was 65% (71 of 109) in patients with Korean type 1 diabetes. Prevalences and titers of anti-GAD65 had not changed much after controlling for the duration and the status of concomitant ATD. In contrast, the prevalence of anti-GAD was 56%(61 of 109), while that of ICA(+) WAS 36% in type 1 diabetes patients. We found significant, but not strong association of anti-GAD65 either with anti-GAD(r=0.4, p<0.01) or with ICA(r=0.6, p< 0.001). CONCLUSION: From this, we could assess that autoantibodies are present at comparable sensitivity and specificity in Korean type 1 diabetes patients. This anti-GAD65 assay, another immunologic marker for type 1 diabetes might also confer disease susceptibility among Koreans, but no increase in the prevalence or in the titer in patients with ATD may suggest that this marker is unlikely to give much benefit, for the detection of the overlapping disease of type 1 diabetes and ATD.

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