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The Association between Pulmonary Functions and Incident Diabetes: Longitudinal Analysis from the Ansung Cohort in Korea (Diabetes Metab J 2020;44: 699-710)
Hoon Sung Choi1, Sung Woo Lee2, Jin Taek Kim2, Hong Kyu Lee2
Diabetes & Metabolism Journal 2020;44(6):944-945.
DOI: https://doi.org/10.4093/dmj.2020.0249
Published online: December 23, 2020
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1Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea

2Department of Internal Medicine, Nowon Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea

Corresponding authors: Jin Taek Kim, orcid , Division of Endocrinology and Metabolism, Department of Internal Medicine, Nowon Eulji Medical Center, Eulji University School of Medicine, 68 Hangeulbiseong-ro, Nowon-gu, Seoul 01830, Korea, E-mail: jtkimmd@eulji.ac.kr
Sung Woo Lee, orcid , Division of Nephrology, Department of Internal Medicine, Nowon Eulji Medical Center, Eulji University School of Medicine, 68 Hangeulbiseong-ro, Nowon-gu, Seoul 01830, Korea, E-mail: neplsw@gmail.com

Copyright © 2020 Korean Diabetes Association

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

See the letter "The Association between Pulmonary Functions and Incident Diabetes: Longitudinal Analysis from the Ansung Cohort in Korea" on page 699.
We appreciate Professor Kim’s comments on our article, entitled “The association between pulmonary functions and incident diabetes: longitudinal analysis from the Ansung cohort in Korea” published in Diabetes and Metabolism Journal [1].
As you pointed out, several studies suggested that diabetes and/or hyperglycemia are associated with development of various pulmonary diseases including chronic obstructive pulmonary disease, asthma, and interstitial lung disease [24]. Although some cross-sectional studies have suggested that insulin resistance may contribute to decreased lung function, there have been no longitudinal studies on the effects of insulin resistance on declining lung function [5,6]. Therefore, at this point, there is no convincing evidence that decreased pulmonary function may be a marker reflecting the relationship between subclinical glucose intolerance status and lung dysfunction. The currently closed Ansung study conducted lung function tests only during the initial 4 years, and additional cohort studies will be needed to track the long-term relationship between lung function and insulin resistance, diabetes, and other metabolic parameters. We agree with your opinion that the link between lung function decline and other diabetes complications, including cardiovascular disease, warrants further investigation.
The coronavirus disease 2019 pandemic, in which there could be many patients with asymptomatic lung disease, could be associated with potential public health problems such as diabetes, cardiovascular disease or other metabolic derangements. We appreciate your insightful opinion, and we also look forward to further epidemiologic or experimental studies on this topic.

CONFLICTS OF INTEREST

No potential conflict of interest relevant to this article was reported.

  • 1. Choi HS, Lee SW, Kim JT, Lee HK. The association between pulmonary functions and incident diabetes: longitudinal analysis from the Ansung cohort in Korea. Diabetes Metab J 2020;44:699-710.ArticlePubMedPMCPDF
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  • 3. Enomoto T, Usuki J, Azuma A, Nakagawa T, Kudoh S. Diabetes mellitus may increase risk for idiopathic pulmonary fibrosis. Chest 2003;123:2007-11.ArticlePubMed
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  • 5. Sagun G, Gedik C, Ekiz E, Karagoz E, Takir M, Oguz A. The relation between insulin resistance and lung function: a cross sectional study. BMC Pulm Med 2015;15:139.ArticlePubMedPMCPDF
  • 6. Forno E, Han YY, Muzumdar RH, Celedon JC. Insulin resistance, metabolic syndrome, and lung function in US adolescents with and without asthma. J Allergy Clin Immunol 2015;136:304-11.e8.ArticlePubMedPMC

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        The Association between Pulmonary Functions and Incident Diabetes: Longitudinal Analysis from the Ansung Cohort in Korea (Diabetes Metab J 2020;44: 699-710)
        Diabetes Metab J. 2020;44(6):944-945.   Published online December 23, 2020
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      Choi HS, Lee SW, Kim JT, Lee HK. The Association between Pulmonary Functions and Incident Diabetes: Longitudinal Analysis from the Ansung Cohort in Korea (Diabetes Metab J 2020;44: 699-710). Diabetes Metab J. 2020;44(6):944-945.
      DOI: https://doi.org/10.4093/dmj.2020.0249.

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