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Suk Chon  (Chon S) 7 Articles
Clinical Experience of the Reverse Iontophoresis Based Glucose Measuring System: Glucall(TM).
Sang Youl Rhee, Suk Chon, Gwanpyo Koh, Seungjoon Oh, Jeong taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim
Korean Diabetes J. 2009;33(2):167-167.   Published online April 1, 2009
DOI: https://doi.org/10.4093/kdj.2009.33.2.167
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AbstractAbstract PDF
To the editor, My original paper that published in Journal of Korean Diabetes Association 2005;29:167-172, entitled, Clinical Experience of the Reverse Iontophoresis Based Glucose Measuring System: Glucall(TM) was submitted to other international journals by me and the coauthor at the same time independently. I hereby retract the paper.
Retraction: Insulin Secretion and Insulin Resistance in Newly Diagnosed, Drug Naive Prediabetes and Type 2 Diabetes Patients With/Without Metabolic Syndrome.
Sang Youl Rhee, Suk Chon, Seungjoon Oh, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Jeong Taek Woo
Korean Diabetes J. 2007;31(2):184-184.   Published online March 1, 2007
DOI: https://doi.org/10.4093/jkda.2007.31.2.184
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AbstractAbstract PDF
No abstract available.
Insulin Secretion and Insulin Resistance in Newly Diagnosed, Drug Naive Prediabetes and Type 2 Diabetes Patients With/Without Metabolic Syndrome.
Sang Youl Rhee, Suk Chon, Seungjoon Oh, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Jeong Taek Woo
Korean Diabetes J. 2006;30(3):198-206.   Published online May 1, 2006
DOI: https://doi.org/10.4093/jkda.2006.30.3.198
  • 2,153 View
  • 24 Download
  • 1 Crossref
AbstractAbstract PDF
BACKGROUND
To evaluate the relationships between deterioration in insulin secretion and aggravated insulin resistance in patients with newly diagnosed prediabetes (preDM) and type 2 diabetes mellitus (T2DM) according to the presence of metabolic syndrome (MS). METHODS: We performed oral glucose tolerance test (OGTT) on 322 drug naive subjects with a history of hyperglycemia of < or = 3 months, and divided these patients into 3 groups, normal glucose tolerance (NGT), preDM (IFG and/or IGT) and T2DM. We also diagnosed these subjects with respect to MS according to ATP III criteria modified by Asia-Pacific guidelines and compared IGI and HOMA-IR in the 3 groups. RESULTS: According to OGTT, 63 subjects were diagnosed with NGT, 81 with preDM, and 178 with T2DM. Using modified ATP III criteria, 218 (67.7%) subjects were diagnosed as MS. When compare groups stratified by the presence of MS, preDM and T2DM groups with MS showed significantly higher mean HOMA-IR and IGI than those without MS. When compare groups with respect to glucose tolerance, NGT, preDM, and T2DM subgroups in MS group showed significant higher HOMA-IR and lower IGI according to glucose tolerance. However, NGT, preDM, and T2DM subgroups in non-MS group showed a significant decrease in IGI but no significant difference in HOMA-IR as glucose tolerance worsened. CONCLUSION: Deterioration in IGI and aggravation of HOMA-IR are both important in the primary pathogenesis of diabetes in those with MS. However, IGI deterioration may be the only important factor in the primary pathogenesis of T2DM in the absence of MS.

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  • The Relationship between β-cell Function and Nutrient Intakes in Korean Adult - Using 4thKorea National Health and Nutrition Examination Survey 2009 -
    You Mi Lee, Hye Kyung Chung, Heejin Kimm, Sun Ha Jee
    Korean Journal of Community Nutrition.2012; 17(2): 243.     CrossRef
The Clinical Characteristics of Young Onset Diabetes According to Etiology Based Classification.
Mina Park, Yang Il Kang, Suk Chon, Seung joon Oh, Jeong taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim
Korean Diabetes J. 2006;30(3):190-197.   Published online May 1, 2006
DOI: https://doi.org/10.4093/jkda.2006.30.3.190
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  • 60 Download
  • 4 Crossref
AbstractAbstract PDF
BACKGROUND
Recently, the number of young diabetic patients is increasing. It is important to understand the characteristics of young diabetes and classify it correctly to manage these patients successfully. We aimed to classify young onset diabetes according to etiology and evaluate the clinical characteristics. METHODS: Young patients (15~30 years old) who have been treated diabetes in Kyunghee medical center in 2004 were included. We investigated family history of diabetes, disease duration, body mass index (BMI), the history of diabetic ketoacidosis, HbA1c, fasting C-peptide, autoantibody, lipid profile and treatment method via medical records. RESULT: Total 85 patients (M:F 40:45) were evaluated. Type 1 diabetes was 45.9%, type 2 diabetes was 23.5% and unclassified group was 25.9%. Many type 2 diabetic patients were overweight or obese (94.8%). Most young diabetic patients were using insulin (95.4%). Many type 1 diabetic patients have been treated by insulin only and many type 2 diabetic patients have been received combined therapy of insulin and oral hypoglycemic agent. The recent HbA1c was average 8.32 +/- 2.7%. The prevalence of diabetic retinopathy, neuropathy and nephropathy was 32.9%, 22.4% and 16.4% as each. CONCLUSION: Nearly half of young onset diabetes was type 1 diabetes but many others were also classified to type 2 diabetes or unclassified group. It is important to provide a consistent algorithm for assessment and investigation for newly diagnosed young diabetic patients. More education and effort are required to control diabetes strictly and prevent its complication.

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  • The Difference in Risk Factors Between Adults With Early-Onset (<40 Years Old) Versus Late-Onset (≥40 Years Old) Type 2 Diabetes in a University Hospital From January 2015-December 2017
    Marilyn Katrina C Caro, Elaine C Cunanan
    Journal of Medicine, University of Santo Tomas.2022; 6(2): 1009.     CrossRef
  • Lifestyle-related predictors affecting prediabetes and diabetes in 20-30-year-old young Korean adults
    Kyong Sil Park, Seon Young Hwang
    Epidemiology and Health.2020; 42: e2020014.     CrossRef
  • The Clinical Characteristics of the Newly Diagnosed Early Onset (< 40 Years Old) Diabetes in Outpatients' Clinic
    Kyung-Soo Kim, Hyun-Ju Oh, Ji-Woon Kim, Yeo-Kyung Lee, Soo-Kyung Kim, Seok-Won Park, Yoo-Lee Kim, Won-Keun Park, Yong-Wook Cho
    Korean Diabetes Journal.2010; 34(2): 119.     CrossRef
  • Anti-GAD Antibody in Patients with Adult-Onset Diabetes in Korea
    Eun-Gyoung Hong
    Korean Diabetes Journal.2009; 33(1): 13.     CrossRef
Clinical Experience of the Reverse Iontopheresis Based Glucose Measuring System: GlucallTM.
Sang Youl Rhee, Suk Chon, Gwanpyo Koh, Seungjoon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim
Korean Diabetes J. 2005;29(2):167-172.   Published online March 1, 2005
  • 917 View
  • 16 Download
AbstractAbstract PDF
BACKGROUND
Finger pricking is currently the common method of blood glucose measurement in patients with diabetes mellitus. However, diabetes patients have proven reluctant to regularly check their glucose profiles because of the small amount of blood that is required. Recently, a non-invasive and continuous glucose monitoring device that is based on reverse iontophoresis(GlucallTM) has been developed. In this study we wanted to evaluate the accuracy and the clinical acceptability of this new device. METHODS: The study was conducted during the period from November 2003 to January 2004 on 19 in-patients who had been admitted to Kyung Hee University Hospital. Glucose measurements using GlucallTM were performed between 10am and 4pm. The concurrent plasma glucose levels were checked hourly and they were subsequently compared with the GlucallTM data. RESULTS: The mean error(ME) of the GlucallTM measurements was -3.45+/-52.99mg/dL with a mean absolute relative error(MARE) of 20+/-15.16%. Measurements obtained by GlucallTM had a correlation coefficient of 0.784(P<0.05) with the plasma glucose levels, as was determined by linear regression analysis. This correlation was consistent regardless of the time of data collection. However, after excluding such confounding variables as age and gender, the correlation coefficient exhibited a tendency to increase. 98.9% of the results were clinically acceptable according to Clarke error grid analysis. CONCLUSION: GlucallTM does not yet have the reliability and accuracy to wholly replace the conventional methods. However, further technical advancements to reduce its shortcomings will make this device useful for the management of diabetes patients
A Case of Failure in Insulin Pump Treatment due to Abdominal Subcutaneous Fat Atrophy and Lipohypertrophied Nodules.
Sang Youl Rhee, Suk Chon, Gwanpyo Koh, Seungjoon Oh, Jeong taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim
Korean Diabetes J. 2004;28(6):547-553.   Published online December 1, 2004
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The insulin pump is an effective glycemic control device those function is analogous to the physiologic regulation of insulin in vivo. When sufficient patient education and proper selection of patients is done, the insulin pump is one of the most effective treatment modalities for diabetic patients. However, various side effects and complications might occur during its application. We report here on an unusual case of diabetic ketoacidosis that was caused by acute inflammatory colitis and insulin pump malfunction. Peculiarly, the cause of pump malfunction was far removed from its mechanical problem. We concluded that the cause of the insulin pump malfunction was due to abdominal subcutaneous fat atrophy and the lipohypertrophied nodules of the patient that developed due to the prolonged usage of the insulin pump.
The Effect of cAMP-Elevating Agents on High Glucose-Induced Apoptosis of Isolated Islets of Rat Pancreas.
Gwan Pyo Koh, Kwang Sik Suh, Suk Chon, Seung Joon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Sun Hee Kwon
Korean Diabetes J. 2004;28(6):490-500.   Published online December 1, 2004
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BACKGROUND
High glucose-induced apoptosis has been implicated in the loss of beta-cells of the pancreatic islets in animal models of type 2 diabetes. GLP-1 has been shown to reduce apoptosis by the cAMP-dependent mechanism in beta-cells. Other studies have also shown that elevated levels of intracellular cyclic AMP delayed apoptosis in other types of cells. We investigated whether cAMP-elevating agents could suppress the high glucose-induced apoptosis of isolated rat islets. METHODS: Pancreatic islets were isolated from Sprague-Dawley (SD) rats. The expression of phosphodiesterase (PDE) 3 subtypes was investigated by using extracts of freshly isolated islets and analyzing them by RT-PCR. After 2 days of isolation, the islets were cultured in RPMI-1640 media containing 5% FBS with various glucose concentrations (11.1, 16.7 and 27.8 mM), 5x10-6 M forskolin, 2x10-4 M 3-isobutyl-1-methylxanthine (IBMX), 10-5 M cilostazol, and 10-6, 5x10-6 and 10-5 M H-89 for 5 days. The islet apoptosis was measured by a sandwich enzyme-immunoassay using antihistone antibody. RESULTS: Apoptosis was lowest at 11.1 mM glucose concentration, and increased at higher glucose concentrations (1.00 +/- 0.04 A.U. (arbitrary unit) at 11.1 mM, 1.17 +/- 0.12 A.U. at 16.7 mM, and 1.65 +/-0.13 A.U. at 27.8 mM (P <0.05 for 11.1 mM). Both PDE 3A and 3B mRNA were expressed in the islet extracts. In 16.7 and 27.8 mM glucose concentrations, forskolin (P <0.01), IBMX (P <0.05) and cilostazol (P < 0.05) suppressed apoptosis of the islet cells. Protein kinase A (PKA) nhibitor, H-89, did not prevent the inhibition of apoptosis by forskolin. CONCLUSION: These results show that high glucose-induced apoptosis of the cells in rat islet is attenuated by such cAMP-elevating agents as cilostazol. However, cyclic AMP regulation of islet apoptosis may occur via a PKA-independent signaling pathway.

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