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Gwanpyo Koh  (Koh G) 6 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
  • 1,890 View
  • 26 Download
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.
A Nationwide Survey about the Current Status of Glycemic Control and Complications in Diabetic Patients in 2006: The Committee of the Korean Diabetes Association on the Epidemiology of Diabetes Mellitus.
Soo Lim, Dae Jung Kim, In Kyung Jeong, Hyun Shik Son, Choon Hee Chung, Gwanpyo Koh, Dae Ho Lee, Kyu Chang Won, Jeong Hyun Park, Tae Sun Park, Jihyun Ahn, Jaetaek Kim, Keun Gyu Park, Seung Hyun Ko, Yu Bae Ahn, Inkyu Lee
Korean Diabetes J. 2009;33(1):48-57.   Published online February 1, 2009
DOI: https://doi.org/10.4093/kdj.2009.33.1.48
  • 3,095 View
  • 72 Download
  • 43 Crossref
AbstractAbstract PDF
BACKGROUND
The Committee of the Korean Diabetes Association on the Epidemiology of Diabetes Mellitus performed a nationwide survey about the current status of glycemic control and diabetic complications in 2006. METHODS: The current study included 5,652 diabetic patients recruited from the rosters of endocrinology clinics of 13 tertiary hospitals in Korea. Age, gender, height, weight, waist circumference and blood pressure were investigated by standard method. Fasting and postprandial 2 hour glucose, glycosylated hemoglobin (HbA1c), lipid profiles, fasting insulin and c-peptide levels were measured. Microvascular (microalbuminuria, retinopathy and neuropathy) and macrovascular (coronary artery disease [CAD], cerebrovascular disease [CVD] and peripheral artery disease [PAD]) complications were reviewed in their medical records. RESULTS: Mean age of total subjects was 58.7 (+/- 11.6) years and duration of diabetes was 8.8 (0~50) years. Mean fasting and postprandial 2 hour glucose levels were 145.9 +/- 55.0 and 208.0 +/- 84.4 mg/dL, respectively. Their mean HbA1c was 7.9 +/- 1.9%: the percentage of patients within target goal of glycemic control (< 7% of HbA1c) was 36.7%. In this study, 30.3%, 38.3% and 44.6% of patients was found to have microalbuminuria, retinopathy and nephropathy, respectively. Prevalence of CAD, CVD and PAD was 8.7%, 6.7% and 3.0%, respectively. Diabetic complications were closely related with age, duration of diabetes and glycemic control, and this relationship was stronger in microvascular complications than macrovascular ones. CONCLUSION: Only about one third of patients with diabetes was found to reach target glycemic control in tertiary hospitals of Korea. More tight control is needed to reduce deleterious complications of diabetes in Korea.

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    International Journal of Diabetes in Developing Countries.2015; 35(S3): 431.     CrossRef
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    Korean Journal of Medicine.2014; 87(5): 565.     CrossRef
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    Acta Diabetologica.2014; 51(4): 655.     CrossRef
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    Ju Hee Lee, Eun Shil Hong, Jung Hun Ohn, Young Min Cho
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  • Prevalence of and Factors Associated with Albuminuria in the Korean Adult Population: The 2011 Korea National Health and Nutrition Examination Survey
    Jong Chul Won, Yun Jeong Lee, Jung Min Kim, Sang Youb Han, Jung Hyun Noh, Kyung Soo Ko, Byoung Doo Rhee, Dong-Jun Kim, Harald Mischak
    PLoS ONE.2013; 8(12): e83273.     CrossRef
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    The Journal of Korean Diabetes.2013; 14(1): 11.     CrossRef
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Prevalence of the Metabolic Syndrome in Type 2 Diabetic Patients.
Tae Ho Kim, Dae Jung Kim, Soo Lim, In Kyung Jeong, Hyun Shik Son, Choon Hee Chung, Gwanpyo Koh, Dae Ho Lee, Kyu Chang Won, Jeong Hyun Park, Tae Sun Park, Jihyun Ahn, Jaetaek Kim, Keun Gyu Park, Seung Hyun Ko, Yu Bae Ahn, Inkyu Lee
Korean Diabetes J. 2009;33(1):40-47.   Published online February 1, 2009
DOI: https://doi.org/10.4093/kdj.2009.33.1.40
  • 2,703 View
  • 38 Download
  • 13 Crossref
AbstractAbstract PDF
BACKGROUND
The aim of this study was to analyze the prevalence of metabolic syndrome in Korean type 2 diabetic patients. METHODS: A total of 4,240 diabetic patients (male 2,033, female 2,207; mean age 58.7 +/- 11.3 years; DM duration 8.9 +/- 7.6 years) were selected from the data of endocrine clinics of 13 university hospitals in 2006. Metabolic syndrome was defined using the criteria of the American Heart Association/National Heart Lung and Blood Institute and the criteria of waist circumference from the Korean Society for the Study of Obesity. RESULTS: The prevalence of metabolic syndrome was 77.9% (76.7% of males, 78.9% of females). The average number of the components of metabolic syndrome was 2.4 +/- 1.1. Abdominal obesity was seen in 56.8% of the patients, hypertriglyceridemia in 42.0%, low HDL cholesterol in 65.1%, and high blood pressure in 74.9%. Abdominal obesity and high blood pressure were much more prevalent among females than males, and low HDL cholesterol was much more prevalent among males than females. The prevalence of metabolic syndrome was not different according to the duration of diabetes. Metabolic syndrome was strongly related with obesity (odds ratio, 6.3) and increased age (odds ratio in the over 70 group, 3.4). CONCLUSION: The prevalence of metabolic syndrome was 77.9% in Korean type 2 diabetic patients. Its prevalence was greater in obese patients and in those over 40 years of age.

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    Seol A Jang, Kyoung Min Kim, Seok Won Park, Chul Sik Kim
    Metabolic Syndrome and Related Disorders.2022; 20(10): 599.     CrossRef
  • Metabolic Age, an Index Based on Basal Metabolic Rate, Can Predict Individuals That are High Risk of Developing Metabolic Syndrome
    Sarahi Vásquez-Alvarez, Sergio K. Bustamante-Villagomez, Gabriela Vazquez-Marroquin, Leonardo M. Porchia, Ricardo Pérez-Fuentes, Enrique Torres-Rasgado, Oscar Herrera-Fomperosa, Ivette Montes-Arana, M. Elba Gonzalez-Mejia
    High Blood Pressure & Cardiovascular Prevention.2021; 28(3): 263.     CrossRef
  • Metabolic syndrome among type 2 diabetic patients in Sub-Saharan African countries: A systematic review and meta-analysis
    Wondimeneh Shibabaw Shiferaw, Tadesse Yirga Akalu, Mihretie Gedefaw, Denis Anthony, Ayelign Mengesha Kassie, Worku Misganaw Kebede, Henok Mulugeta, Getenet Dessie, Yared Asmare Aynalem
    Diabetes & Metabolic Syndrome: Clinical Research & Reviews.2020; 14(5): 1403.     CrossRef
  • Optimal Waist Circumference Cutoff Value Based on Insulin Resistance and Visceral Obesity in Koreans with Type 2 Diabetes
    Jung Soo Lim, Young Ju Choi, Soo-Kyung Kim, Byoung Wook Huh, Eun Jig Lee, Kap Bum Huh
    Diabetes & Metabolism Journal.2015; 39(3): 253.     CrossRef
  • The Relations between Diabetic Dietary Compliance, Dietary Intake, and Physical Activity and the Prevalence of Metabolic Syndrome (MS) in Type 2 Diabetic Patients
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    Korean Journal of Community Nutrition.2015; 20(5): 351.     CrossRef
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    The Korean Journal of Health Service Management.2013; 7(2): 81.     CrossRef
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    Diabetes and Vascular Disease Research.2013; 10(5): 459.     CrossRef
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    Diabetes & Metabolism Journal.2012; 36(5): 357.     CrossRef
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  • Therapeutic Target Achievement in Type 2 Diabetic Patients after Hyperglycemia, Hypertension, Dyslipidemia Management
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Mechanism of 2-Deoxy-D-ribose-induced Damage in Pancreatic beta-cells.
Gwanpyo Koh, Jeong taek Woo, Dae Ho Lee, Seungjoon Oh, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Deok Bae Park
Korean Diabetes J. 2007;31(2):105-112.   Published online March 1, 2007
DOI: https://doi.org/10.4093/jkda.2007.31.2.105
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  • 2 Crossref
AbstractAbstract PDF
BACKGROUND
Mechanism for glucose toxicity is known to be an increased oxidative stress produced by multiple pathways. In our previous report, 2-deoxy-d-ribose (dRib) promoted apoptosis by increasing oxidative stress in a pancreatic beta-cell line. We performed this study to investigate the mechanism of dRib-induced damage of beta-cells. METHODS: HIT-T15 cells were cultured in RPMI-1640 medium with 40 mM dRib for 24 hours after pretreatment with various concentrations of a metal chelator (DTPA) and inhibitors of protein glycation (aminoguanidine and pyridoxamine). Cell viability was determined by MTT assay. Apoptosis was analyzed by flow cytometry with annexin V/PI double staining. RESULTS: DTPA, which inhibits the monosaccharide autoxidation, partially reversed dRib-induced cytotoxicity in a dose-dependent manner (P < 0.01). The cytotoxicity was also suppressed dose-dependently by aminoguanidine (AG) and pyridoxamine (PM) (P < 0.05 and P < 0.01, repectively). Flow cytometric analysis showed that pretreatment of DTPA and AG also reversed the dRib-triggered apoptosis in a dose-dependent manner. We assessed the additional protective effects of inhibitors of protein glycation from dRib-induced cytotoxiciy in the presence of a metal chelator. The additions of AG (P < 0.05) and PM (P < 0.01) significantly reduced the cytotoxicity compared with DTPA alone group. CONCLUSION: This results suggest that dRib produce cytotoxicity and apoptosis through the mechanisms of advanced glycation endproducts (AGEs) formation including the monsaccharide autoxidation and protein glycation in pancreatic beta-cell. Thus, dRib could be a surrogate for glucose in the study of glucose toxicity and chronic diabetic complications.

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  • Isolation of Citrus Peel Flavonoid Bioconversion Microorganism and Inhibitory Effect on the Oxidative Damage in Pancreatic Beta Cells
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  • Kaempferol protects HIT‐T15 pancreatic beta cells from 2‐deoxy‐D‐ribose‐induced oxidative damage
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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
  • 1,027 View
  • 17 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
  • 1,073 View
  • 22 Download
AbstractAbstract PDF
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.

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