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Nam H. Cho  (Cho NH) 3 Articles
Genetics
Genome-Wide Association Study on Longitudinal Change in Fasting Plasma Glucose in Korean Population
Heejin Jin, Soo Heon Kwak, Ji Won Yoon, Sanghun Lee, Kyong Soo Park, Sungho Won, Nam H. Cho
Diabetes Metab J. 2023;47(2):255-266.   Published online January 19, 2023
DOI: https://doi.org/10.4093/dmj.2021.0375
  • 2,626 View
  • 165 Download
AbstractAbstract PDFSupplementary MaterialPubReader   ePub   
Background
Genome-wide association studies (GWAS) on type 2 diabetes mellitus (T2DM) have identified more than 400 distinct genetic loci associated with diabetes and nearly 120 loci for fasting plasma glucose (FPG) and fasting insulin level to date. However, genetic risk factors for the longitudinal deterioration of FPG have not been thoroughly evaluated. We aimed to identify genetic variants associated with longitudinal change of FPG over time.
Methods
We used two prospective cohorts in Korean population, which included a total of 10,528 individuals without T2DM. GWAS of repeated measure of FPG using linear mixed model was performed to investigate the interaction of genetic variants and time, and meta-analysis was conducted. Genome-wide complex trait analysis was used for heritability calculation. In addition, expression quantitative trait loci (eQTL) analysis was performed using the Genotype-Tissue Expression project.
Results
A small portion (4%) of the genome-wide single nucleotide polymorphism (SNP) interaction with time explained the total phenotypic variance of longitudinal change in FPG. A total of four known genetic variants of FPG were associated with repeated measure of FPG levels. One SNP (rs11187850) showed a genome-wide significant association for genetic interaction with time. The variant is an eQTL for NOC3 like DNA replication regulator (NOC3L) gene in pancreas and adipose tissue. Furthermore, NOC3L is also differentially expressed in pancreatic β-cells between subjects with or without T2DM. However, this variant was not associated with increased risk of T2DM nor elevated FPG level.
Conclusion
We identified rs11187850, which is an eQTL of NOC3L, to be associated with longitudinal change of FPG in Korean population.
Epidemiology
Oral Glucose Tolerance Testing Allows Better Prediction of Diabetes in Women with a History of Gestational Diabetes Mellitus
Tae Jung Oh, Yeong Gi Kim, Sunyoung Kang, Joon Ho Moon, Soo Heon Kwak, Sung Hee Choi, Soo Lim, Kyong Soo Park, Hak C. Jang, Joon-Seok Hong, Nam H. Cho
Diabetes Metab J. 2019;43(3):342-349.   Published online December 7, 2018
DOI: https://doi.org/10.4093/dmj.2018.0086
  • 4,666 View
  • 59 Download
  • 10 Web of Science
  • 10 Crossref
AbstractAbstract PDFPubReader   
Background

We aimed to identify the postpartum metabolic factors that were associated with the development of diabetes in women with a history of gestational diabetes mellitus (GDM). In addition, we examined the role of the oral glucose tolerance test (OGTT) in the prediction of future diabetes.

Methods

We conducted a prospective study of 179 subjects who previously had GDM but did not have diabetes at 2 months postpartum. The initial postpartum examination including a 75-g OGTT and the frequently sampled intravenous glucose tolerance test (FSIVGTT) was performed 12 months after delivery, and annual follow-up visits were made thereafter.

Results

The insulinogenic index (IGI30) obtained from the OGTT was significantly correlated with the acute insulin response to glucose (AIRg) obtained from the FSIVGTT. The disposition indices obtained from the OGTT and FSIVGTT were also significantly correlated. Women who progressed to diabetes had a lower insulin secretory capacity including IGI30, AIRg, and disposition indices obtained from the FSIVGTT and OGTT compared with those who did not. However, the insulin sensitivity indices obtained from the OGTT and FSIVGTT did not differ between the two groups. Multivariate logistic regression analysis showed that the 2-hour glucose and disposition index obtained from the FSIVGTT were significant postpartum metabolic risk factors for the development of diabetes.

Conclusion

We identified a crucial role of β-cell dysfunction in the development of diabetes in Korean women with previous GDM. The 2-hour glucose result from the OGTT is an independent predictor of future diabetes. Therefore, the OGTT is crucial for better prediction of future diabetes in Korean women with previous GDM.

Citations

Citations to this article as recorded by  
  • Diagnosis and management of gestational diabetes mellitus
    Tae Jung Oh
    Journal of the Korean Medical Association.2023; 66(7): 414.     CrossRef
  • Risk factors for women with gestational diabetes mellitus developing type 2 diabetes and the impact on children's health
    Yi‐Ling Chiou, Chich‐Hsiu Hung, Ching‐Yun Yu, Te‐Fu Chan, Ming‐Gwo Liu
    Journal of Clinical Nursing.2022; 31(7-8): 1005.     CrossRef
  • Postprandial Free Fatty Acids at Mid-Pregnancy Increase the Risk of Large-for-Gestational-Age Newborns in Women with Gestational Diabetes Mellitus
    So-Yeon Kim, Young Shin Song, Soo-Kyung Kim, Yong-Wook Cho, Kyung-Soo Kim
    Diabetes & Metabolism Journal.2022; 46(1): 140.     CrossRef
  • Gestational Diabetes Mellitus: Diagnostic Approaches and Maternal-Offspring Complications
    Joon Ho Moon, Hak Chul Jang
    Diabetes & Metabolism Journal.2022; 46(1): 3.     CrossRef
  • Higher Muscle Mass Protects Women with Gestational Diabetes Mellitus from Progression to Type 2 Diabetes Mellitus
    Yujin Shin, Joon Ho Moon, Tae Jung Oh, Chang Ho Ahn, Jae Hoon Moon, Sung Hee Choi, Hak Chul Jang
    Diabetes & Metabolism Journal.2022; 46(6): 890.     CrossRef
  • Pancreatic fat accumulation is associated with decreased β‐cell function and deterioration in glucose tolerance in Korean adults
    Sang Ouk Chin, You‐Cheol Hwang, In‐Jin Cho, In‐Kyung Jeong, Kyu Jeung Ahn, Ho Yeon Chung
    Diabetes/Metabolism Research and Reviews.2021;[Epub]     CrossRef
  • The Clinical Characteristics of Gestational Diabetes Mellitus in Korea: A National Health Information Database Study
    Kyung-Soo Kim, Sangmo Hong, Kyungdo Han, Cheol-Young Park
    Endocrinology and Metabolism.2021; 36(3): 628.     CrossRef
  • Bihormonal dysregulation of insulin and glucagon contributes to glucose intolerance development at one year post-delivery in women with gestational diabetes: a prospective cohort study using an early postpartum 75-g glucose tolerance test
    Riyoko Shigeno, Ichiro Horie, Masaki Miwa, Ayako Ito, Ai Haraguchi, Shoko Natsuda, Satoru Akazawa, Ai Nagata, Yuri Hasegawa, Shoko Miura, Kiyonori Miura, Atsushi Kawakami, Norio Abiru
    Endocrine Journal.2021; 68(8): 919.     CrossRef
  • Risk factors during the early postpartum period for type 2 diabetes mellitus in women with gestational diabetes
    Maki Kawasaki, Naoko Arata, Naoko Sakamoto, Anna Osamura, Siori Sato, Yoshihiro Ogawa, Ichiro Yasuhi, Masako Waguri, Yuji Hiramatsu
    Endocrine Journal.2020; 67(4): 427.     CrossRef
  • Cod-Liver Oil Improves Metabolic Indices and hs-CRP Levels in Gestational Diabetes Mellitus Patients: A Double-Blind Randomized Controlled Trial
    Shuli Yang, Ruixin Lin, Lihui Si, Zhuo Li, Wenwen Jian, Qing Yu, Yan Jia
    Journal of Diabetes Research.2019; 2019: 1.     CrossRef
The Epidemiology of Diabetes in Korea: From the Economics to Genetics
Nam H. Cho
Korean Diabetes J. 2010;34(1):10-15.   Published online February 28, 2010
DOI: https://doi.org/10.4093/kdj.2010.34.1.10
  • 2,733 View
  • 51 Download
  • 17 Crossref
AbstractAbstract PDFPubReader   

To determine the factors responsible for the dramatic increase in the prevalence of diabetes in Korea. A computerized literature survey was conducted to evaluate the risk factors for Type 2 diabetes mellitus (T2DM) in Korea, including genome-wide association studies. National Statistics gross national income data was integrated with the reported prevalence of diabetes to evaluate the relationship between diabetes and the economic growth. The strength of the association was evaluated using measures of effect size, such as odds ratio and relative risks. The putative risk factors identified in Korean studies are very similar to the risk factors identified from the other countries, including genetic background. Genome-wide association studies reported relative risks of 1.5 or less, indicating that no single gene is associated with the risk of T2DM. The scientific evidence suggests that the dramatic increase in the incidence and prevalence of T2DM in Korea is related to the economic development of Korea, which has a direct influence on health policy, as well as an individual's health behaviors. We expect to observe the current diabetes incidence rates until the key risk factors are present for long enough in our society, at which point we would expect to start observing a more gradual increase in both the incidence and prevalence of T2DM in Korea.

Citations

Citations to this article as recorded by  
  • Risk Factors Associated With Type-II Diabetes Mellitus in Male Adults in District Mardan

    Advances in Nutrition & Food Science.2019;[Epub]     CrossRef
  • Fifty Years of Compassionate Care and Harmonious Collaboration of the Korean Diabetes Association: The 50th Anniversary of Korean Diabetes Association
    Jong Chul Won, Eun-Jung Rhee, Hyung Joon Yoo
    Diabetes & Metabolism Journal.2018; 42(6): 475.     CrossRef
  • The Diabetes Epidemic in Korea
    Junghyun Noh
    Endocrinology and Metabolism.2016; 31(3): 349.     CrossRef
  • Trends in Diabetes Incidence in the Last Decade Based on Korean National Health Insurance Claims Data
    Sun Ok Song, Yong-ho Lee, Dong Wook Kim, Young Duk Song, Joo Young Nam, Kyoung Hye Park, Dae Jung Kim, Seok Won Park, Hyun Chul Lee, Byung-Wan Lee
    Endocrinology and Metabolism.2016; 31(2): 292.     CrossRef
  • Age at menarche and its association with dysglycemia in Korean middle-aged women
    Tae-Hwa Baek, Nam-Kyoo Lim, Min-Ju Kim, Joungwon Lee, Seungho Ryu, Yoosoo Chang, Yuni Choi, Hyun-Young Park
    Menopause.2015; 22(5): 542.     CrossRef
  • Association of cadmium with diabetes in middle-aged residents of abandoned metal mines: the first health effect surveillance for residents in abandoned metal mines
    Hee-seung Son, Soo-geun Kim, Byung-seong Suh, Dong-uk Park, Dae-seon Kim, Seung-do Yu, Yeong-seoub Hong, Jung-duck Park, Byung-kook Lee, Jai-dong Moon, Joon Sakong
    Annals of Occupational and Environmental Medicine.2015;[Epub]     CrossRef
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    J. Hwang, C. Shon
    BMJ Open.2014; 4(8): e005710.     CrossRef
  • The Influence of Admission Hypoglycemia on Clinical Outcomes in Acute Myocardial Infarction Patients with Diabetes Mellitus
    Eun Jung Kim, Myung Ho Jeong, In Seok Jeong, Sang Gi Oh, Sang Hyung Kim, Young keun Ahn, Ju Han Kim, Young Jo Kim, Shung Chull Chae, Taek Jong Hong, In Whan Seong, Jei Keon Chae, Chong Jin Kim, Myeong Chan Cho, Ki Bae Seung, Hyo Soo Kim
    Korean Journal of Medicine.2014; 87(5): 565.     CrossRef
  • Diabetes burden and prevention in Korea and the Western Pacific Region
    Nam H. Cho
    Diabetes Research and Clinical Practice.2014; 106: S282.     CrossRef
  • The Incidence and Prevalence of Diabetes Mellitus and Related Atherosclerotic Complications in Korea: A National Health Insurance Database Study
    Bo Kyung Koo, Chang-Hoon Lee, Bo Ram Yang, Seung-sik Hwang, Nam-Kyong Choi, Mohammad Ebrahim Khamseh
    PLoS ONE.2014; 9(10): e110650.     CrossRef
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    Diabetes & Metabolism Journal.2013; 37(4): 233.     CrossRef
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    Hye Kyoung Han
    Journal of the Korean Society of Food Science and Nutrition.2012; 41(12): 1716.     CrossRef
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    Kyung‐Rim Shin, Younhee Kang, Miyoung Kim, Dukyoo Jung, Mijung Kim
    Nursing & Health Sciences.2012; 14(1): 81.     CrossRef
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Diabetes Metab J : Diabetes & Metabolism Journal