Diabetes & Metabolism Journal

Original Articles

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Rg3 Improves Mitochondrial Function and the Expression of Key Genes Involved in Mitochondrial Biogenesis in C2C12 Myotubes: Min Joo Kim, Young Do Koo, Min Kim, Soo Lim, Young Joo Park, Sung Soo Chung, Hak C. Jang, Kyong Soo Park; Diabetes Metab J. 2016;40(5):406-413. Published online August 12, 2016; DOI: https://doi.org/10.4093/dmj.2016.40.5.406

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Background

Panax ginseng has glucose-lowering effects, some of which are associated with the improvement in insulin resistance in skeletal muscle. Because mitochondria play a pivotal role in the insulin resistance of skeletal muscle, we investigated the effects of the ginsenoside Rg3, one of the active components of P. ginseng, on mitochondrial function and biogenesis in C2C12 myotubes.

Methods

C2C12 myotubes were treated with Rg3 for 24 hours. Insulin signaling pathway proteins were examined by Western blot. Cellular adenosine triphosphate (ATP) levels and the oxygen consumption rate were measured. The protein or mRNA levels of mitochondrial complexes were evaluated by Western blot and quantitative reverse transcription polymerase chain reaction analysis.

Results

Rg3 treatment to C2C12 cells activated the insulin signaling pathway proteins, insulin receptor substrate-1 and Akt. Rg3 increased ATP production and the oxygen consumption rate, suggesting improved mitochondrial function. Rg3 increased the expression of peroxisome proliferator-activated receptor γ coactivator 1α, nuclear respiratory factor 1, and mitochondrial transcription factor, which are transcription factors related to mitochondrial biogenesis. Subsequent increased expression of mitochondrial complex IV and V was also observed.

Conclusion

Our results suggest that Rg3 improves mitochondrial function and the expression of key genes involved in mitochondrial biogenesis, leading to an improvement in insulin resistance in skeletal muscle. Rg3 may have the potential to be developed as an anti-hyperglycemic agent.

Citations

Citations to this article as recorded by

Comparison of Ginseng Leaf Extract and Its Acid-Treated Form, UG0712 Between Their Effects on Exercise Performance in Mice
Young Jin Lee, Su Hyun Yu, Gwang Yeong Seok, Su Yeon Kim, Mi Jeong Kim, Inhye Jeong, Wan Heo, Bo Su Lee, Seon Gil Do, Bok Kyung Han, Young Jun Kim
Food Supplements and Biomaterials for Health.2024;[Epub] CrossRef
Ginsenosides for the treatment of insulin resistance and diabetes: Therapeutic perspectives and mechanistic insights
Tae Hyun Kim
Journal of Ginseng Research.2024; 48(3): 276. CrossRef
Preparation and bioactivity of the rare ginsenosides Rg3 and Rh2: An updated review
Wenqi Xu, Wei Lyu, Cuicui Duan, Fumin Ma, Xiaolei Li, Dan Li
Fitoterapia.2023; 167: 105514. CrossRef
Ginsenoside Rc, an Active Component of Panax ginseng, Alleviates Oxidative Stress-Induced Muscle Atrophy via Improvement of Mitochondrial Biogenesis
Aeyung Kim, Sang-Min Park, No Soo Kim, Haeseung Lee
Antioxidants.2023; 12(8): 1576. CrossRef
Ginsenoside Rg3 protects glucocorticoid‑induced muscle atrophy in vitro through improving mitochondrial biogenesis and myotube growth
Ryuni Kim, Jee Kim, Sang-Jin Lee, Gyu-Un Bae
Molecular Medicine Reports.2022;[Epub] CrossRef
Beneficial Effects of Walnut Oligopeptides on Muscle Loss in Senescence-Accelerated Mouse Prone-8 (SAMP8) Mice: Focusing on Mitochondrial Function
Rui Fan, Yuntao Hao, Qian Du, Jiawei Kang, Meihong Xu, Yong Li
Nutrients.2022; 14(10): 2051. CrossRef
Ginseng and ginsenosides: Therapeutic potential for sarcopenia
Weiwei Zha, Yuanhai Sun, Wenwen Gong, Linghuan Li, Wonnam Kim, Hanbing Li
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Bioactive Oligopeptides from Ginseng (Panax ginseng Meyer) Suppress Oxidative Stress-Induced Senescence in Fibroblasts via NAD+/SIRT1/PGC-1α Signaling Pathway
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Qingxia Huang, Song Gao, Daqing Zhao, Xiangyan Li
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The Effects of Korean Red Ginseng on Biological Aging and Antioxidant Capacity in Postmenopausal Women: A Double-Blind Randomized Controlled Study
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A comprehensive review on the phytochemistry, pharmacokinetics, and antidiabetic effect of Ginseng
Yage Liu, Hao Zhang, Xuan Dai, Ruyuan Zhu, Beibei Chen, Bingke Xia, Zimengwei Ye, Dandan Zhao, Sihua Gao, Alexander N. Orekhov, Dongwei Zhang, Lili Wang, Shuzhen Guo
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Chronic Adipose Tissue Inflammation Linking Obesity to Insulin Resistance and Type 2 Diabetes
Federica Zatterale, Michele Longo, Jamal Naderi, Gregory Alexander Raciti, Antonella Desiderio, Claudia Miele, Francesco Beguinot
Frontiers in Physiology.2020;[Epub] CrossRef
Stereoisomer-specific ginsenoside 20(S)-Rg3 reverses replicative senescence of human diploid fibroblasts via Akt-mTOR-Sirtuin signaling
Kyeong-Eun Yang, Hyun-Jin Jang, In-Hu Hwang, Eun Mi Hong, Min-Goo Lee, Soon Lee, Ik-Soon Jang, Jong-Soon Choi
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Ginsenosides for the treatment of metabolic syndrome and cardiovascular diseases: Pharmacology and mechanisms
Wenxiang Fan, Yongliang Huang, Hui Zheng, Shuiqin Li, Zhuohong Li, Li Yuan, Xi Cheng, Chengshi He, Jianfeng Sun
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Ca2+-activated mitochondrial biogenesis and functions improve stem cell fate in Rg3-treated human mesenchymal stem cells
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Chang-Yun Woo, Jung Eun Jang, Seung Eun Lee, Eun Hee Koh, Ki-Up Lee
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Ginsenoside Rg3 upregulates myotube formation and mitochondrial function, thereby protecting myotube atrophy induced by tumor necrosis factor-alpha
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Litao Bai, Jialiang Gao, Fan Wei, Jing Zhao, Danwei Wang, Junping Wei
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Zhipeng Li, Geun Eog Ji
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Molecular signaling of ginsenosides Rb1, Rg1, and Rg3 and their mode of actions
Padmanaban Mohanan, Sathiyamoorthy Subramaniyam, Ramya Mathiyalagan, Deok-Chun Yang
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Inactivation of glycogen synthase kinase-3β (GSK-3β) enhances skeletal muscle oxidative metabolism
W.F. Theeuwes, H.R. Gosker, R.C.J. Langen, K.J.P. Verhees, N.A.M. Pansters, A.M.W.J. Schols, A.H.V. Remels
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Clinical Care/Education
Hyperglycemia Is Associated with Impaired Muscle Quality in Older Men with Diabetes: The Korean Longitudinal Study on Health and Aging: Ji Won Yoon, Yong-Chan Ha, Kyoung Min Kim, Jae Hoon Moon, Sung Hee Choi, Soo Lim, Young Joo Park, Jae Young Lim, Ki Woong Kim, Kyong Soo Park, Hak Chul Jang; Diabetes Metab J. 2016;40(2):140-146. Published online March 31, 2016; DOI: https://doi.org/10.4093/dmj.2016.40.2.140

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78 Download
86 Web of Science
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Abstract PDF PubReader

Background

The study aimed to investigate the influence of hyperglycemia on muscle quality in older men with type 2 diabetes.

Methods

This was a subsidiary study of the Korean Longitudinal Study of Health and Aging. Among 326 older men consenting to tests of body composition and muscle strength, 269 men were ultimately analyzed after the exclusion because of stroke (n=30) and uncertainty about the diagnosis of diabetes (n=27). Body composition was measured using dual-energy X-ray absorptiometry and computed tomography. Muscle strength for knee extension was measured using an isokinetic dynamometer. Muscle quality was assessed from the ratio of leg strength to the entire corresponding leg muscle mass.

Results

The muscle mass, strength, and quality in patients with type 2 diabetes did not differ significantly from controls. However, when patients with diabetes were subdivided according to their glycemic control status, patients with a glycosylated hemoglobin (HbA1c) level of ≥8.5% showed significantly decreased leg muscle quality by multivariate analysis (odds ratio, 4.510; P=0.045) after adjustment for age, body mass index, smoking amount, alcohol consumption, physical activity, and duration of diabetes. Physical performance status was also impaired in subjects with an HbA1c of ≥8.5%.

Conclusion

Poor glycemic control in these older patients with diabetes was associated with significant risk of decreased muscle quality and performance status. Glycemic control with an HbA1c of <8.5% might be needed to reduce the risk of adverse skeletal and functional outcomes in this population.

Citations

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Association of Glucose Fluctuations with Sarcopenia in Older Adults with Type 2 Diabetes Mellitus
Noriko Ogama, Takashi Sakurai, Shuji Kawashima, Takahisa Tanikawa, Haruhiko Tokuda, Shosuke Satake, Hisayuki Miura, Atsuya Shimizu, Manabu Kokubo, Shumpei Niida, Kenji Toba, Hiroyuki Umegaki, Masafumi Kuzuya
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Diabetes and Muscle Dysfunction in Older Adults
Hak Chul Jang
Annals of Geriatric Medicine and Research.2019; 23(4): 160. CrossRef
Factors influencing safe glucose-lowering in older adults with type 2 diabetes: A PeRsOn-centred ApproaCh To IndiVidualisEd (PROACTIVE) Glycemic Goals for older people
C.E. Hambling, K. Khunti, X. Cos, J. Wens, L. Martinez, P. Topsever, S. Del Prato, A. Sinclair, G. Schernthaner, G. Rutten, S. Seidu
Primary Care Diabetes.2019; 13(4): 330. CrossRef
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Cíntia E. Botton, Daniel Umpierre, Anderson Rech, Lucinéia O. Pfeifer, Carlos L.F. Machado, Juliana L. Teodoro, Alexandre S. Dias, Ronei S. Pinto
Experimental Gerontology.2018; 113: 141. CrossRef
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Bok Rye Song
The Journal of Korean Diabetes.2018; 19(4): 232. CrossRef
Decreased Muscle Strength and Quality in Diabetes-Related Dementia
Akito Tsugawa, Yusuke Ogawa, Naoto Takenoshita, Yoshitsugu Kaneko, Hirokuni Hatanaka, Eriko Jaime, Raita Fukasawa, Haruo Hanyu
Dementia and Geriatric Cognitive Disorders Extra.2017; 7(3): 454. CrossRef
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Dong Hyun Kim, Tae Yang Yu
The Journal of Korean Diabetes.2017; 18(4): 239. CrossRef
Frailty and sarcopenia - newly emerging and high impact complications of diabetes
Alan J. Sinclair, Ahmed H. Abdelhafiz, Leocadio Rodríguez-Mañas
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Michelle L Mair, Rohin Athavale, Ahmed H Abdelhafiz
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Response: Hyperglycemia Is Associated with Impaired Muscle Quality in Older Men with Diabetes: The Korean Longitudinal Study on Health and Aging (Diabetes Metab J 2016;40:140-6)
Ji Won Yoon, Hak Chul Jang
Diabetes & Metabolism Journal.2016; 40(3): 250. CrossRef
Salivary lactate dehydrogenase and aminotransferases in diabetic patients
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Letter: Hyperglycemia Is Associated with Impaired Muscle Quality in Older Men with Diabetes: The Korean Longitudinal Study on Health and Aging (Diabetes Metab J 2016;40:140-6)
Jun Sung Moon
Diabetes & Metabolism Journal.2016; 40(3): 248. CrossRef
Sarcopenia, Frailty, and Diabetes in Older Adults
Hak Chul Jang
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Carotid Intimal-Medial Thickness Is Not Increased in Women with Previous Gestational Diabetes Mellitus: Yun Hyi Ku, Sung Hee Choi, Soo Lim, Young Min Cho, Young Joo Park, Kyong Soo Park, Seong Yeon Kim, Hak Chul Jang; Diabetes Metab J. 2011;35(5):497-503. Published online October 31, 2011; DOI: https://doi.org/10.4093/dmj.2011.35.5.497

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Background

Gestational diabetes mellitus (GDM) is known to increase the risk of cardiovascular diseases. Measuring the carotid artery intimal-medial thickness (CIMT) is a non-invasive technique used to evaluate early atherosclerosis and to predict future cardiovascular diseases. We examined the association between CIMT and cardiovascular risk factors in young Korean women with previous GDM.

Methods

One hundred one women with previous GDM and 19 women who had normal pregnancies (NP) were recruited between 1999 and 2002. At one year postpartum, CIMT was measured using high-resolution B-mode ultrasonography, and oral glucose tolerance tests were performed. Fasting glucose, glycated hemoglobin A1c (HbA1c), insulin levels and lipid profiles were also measured. CIMTs in the GDM and NP groups were compared, and the associations between CIMT and cardiovascular risk factors were analyzed in the GDM group.

Results

CIMT results of the GDM group were not significantly different from those of the NP group (GDM, 0.435±0.054 mm; NP, 0.460±0.046 mm; P=0.069). In the GDM group, a higher HbA1c was associated with an increase in CIMT after age adjustment (P=0.011). CIMT results in the group with HbA1c >6.0% were higher than those of the normal HbA1c (HbA1c ≤6.0%) (P=0.010). Nine of the patients who are type 2 diabetes mellitus converters within one year postpartum but showed no significant difference in CIMT results compared to NP group.

Conclusion

Higher HbA1c is associated with an increase in CIMT in women with previous GDM. However, CIMT at one year postpartum was not increased in these women compared to that in NP women.

Citations

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The effect of gestational diabetes mellitus on carotid artery intima-media thickness in and after pregnancy: a systematic review and meta-analysis
Andrea Sonaglioni, Elisabetta Piergallini, Angelo Naselli, Gian Luigi Nicolosi, Anna Ferrulli, Stefano Bianchi, Michele Lombardo, Giuseppe Ambrosio
Acta Diabetologica.2023; 61(2): 139. CrossRef
Prognostic indicators of persistent carotid intima-media thickness increase in postpartum period in a population of normotensive women with gestational diabetes mellitus
Andrea Sonaglioni, Gian Luigi Nicolosi, Valentina Esposito, Stefano Bianchi, Michele Lombardo
European Journal of Obstetrics & Gynecology and Reproductive Biology.2022; 269: 47. CrossRef
Pharmacotherapy for gestational diabetes
Angelo Maria Patti, Rosaria Vincenza Giglio, Kalliopi Pafili, Manfredi Rizzo, Nikolaos Papanas
Expert Opinion on Pharmacotherapy.2018; 19(13): 1407. CrossRef
Women with a history of gestational diabetes on long-term follow up have normal vascular function despite more dysglycemia, dyslipidemia and adiposity
Olubukola Ajala, Louise A. Jensen, Edmond Ryan, Constance Chik
Diabetes Research and Clinical Practice.2015; 110(3): 309. CrossRef
Gestational Diabetes Mellitus in Korean Women: Similarities and Differences from Other Racial/Ethnic Groups
Catherine Kim
Diabetes & Metabolism Journal.2014; 38(1): 1. CrossRef
History of Gestational Diabetes Mellitus and Future Risk of Atherosclerosis in Mid‐life: The Coronary Artery Risk Development in Young Adults Study
Erica P. Gunderson, Vicky Chiang, Mark J. Pletcher, David R. Jacobs, Charles P. Quesenberry, Stephen Sidney, Cora E. Lewis
Journal of the American Heart Association.2014;[Epub] CrossRef
Association of Gestational Diabetes Mellitus (GDM) with subclinical atherosclerosis: a systemic review and meta-analysis
Jing-Wei Li, Si-Yi He, Peng Liu, Lin Luo, Liang Zhao, Ying-Bin Xiao
BMC Cardiovascular Disorders.2014;[Epub] CrossRef
Cardiovascular Disease Risk in the Offspring of Diabetic Women: The Impact of the Intrauterine Environment
Laura J. Marco, Kate McCloskey, Peter J. Vuillermin, David Burgner, Joanne Said, Anne-Louise Ponsonby
Experimental Diabetes Research.2012; 2012: 1. CrossRef
The Association between Carotid Atherosclerosis and Glucose
Bo Kyung Koo
Diabetes & Metabolism Journal.2011; 35(5): 466. CrossRef

Insulin Secretion and Incretin Hormone Concentration in Women with Previous Gestational Diabetes Mellitus: Sung Hoon Yu, Bongjun Cho, Yejin Lee, Eunhye Kim, Sung Hee Choi, Soo Lim, Ka Hee Yi, Young Joo Park, Kyong Soo Park, Hak Chul Jang; Diabetes Metab J. 2011;35(1):58-64. Published online February 28, 2011; DOI: https://doi.org/10.4093/dmj.2011.35.1.58

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Background

We examined the change in the levels of incretin hormone and effects of glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide 1 (GLP-1) on insulin secretion in women with previous gestational diabetes (pGDM).

Methods

A 75-g oral glucose tolerance test (OGTT) was conducted on 34 women with pGDM. In addition, 11 women with normal glucose tolerance, matched for age, height and weight, were also tested. The insulin, GIP, GLP-1, and glucagon concentrations were measured, and their anthropometric and biochemical markers were also measured.

Results

Among 34 women with pGDM, 18 had normal glucose tolerance, 13 had impaired glucose tolerance (IGT) and 1 had diabetes. No significant differences were found in GLP-1 concentration between the pGDM and control group. However, a significantly high level of glucagon was present in the pGDM group at 30 minutes into the OGTT. The GIP concentration was elevated at 30 minutes and 60 minutes in the pGDM group. With the exception of the 30-minute timepoint, women with IGT had significantly high blood glucose from 0 to 120 minutes. However, there was no significant difference in insulin or GLP-1 concentration. The GIP level was significantly high from 0 to 90 minutes in patients diagnosed with IGT.

Conclusion

GLP-1 secretion does not differ between pGDM patients and normal women. GIP was elevated, but that does not seem to induce in increase in insulin secretion. Therefore, we conclude that other factors such as heredity and environment play important roles in the development of type 2 diabetes.

Citations

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Association of GLP-1 secretion with parameters of glycemic control in women after gestational diabetes mellitus
Eleni Pappa, Kristina Busygina, Saori Harada, Hana Hermann, Cornelia Then, Andreas Lechner, Uta Ferrari, Jochen Seissler
BMJ Open Diabetes Research & Care.2024; 12(1): e003706. CrossRef
Increased Pro-Inflammatory T Cells, Senescent T Cells, and Immune-Check Point Molecules in the Placentas of Patients With Gestational Diabetes Mellitus
Yea Eun Kang, Hyon-Seung Yi, Min-Kyung Yeo, Jung Tae Kim, Danbit Park, Yewon Jung, Ok Soon Kim, Seong Eun Lee, Ji Min Kim, Kyong Hye Joung, Ju Hee Lee, Bon Jeong Ku, Mina Lee, Hyun Jin Kim
Journal of Korean Medical Science.2022;[Epub] CrossRef
Simulation of Oral Glucose Tolerance Tests and the Corresponding Isoglycemic Intravenous Glucose Infusion Studies for Calculation of the Incretin Effect
Myeungseon Kim, Tae Jung Oh, Jung Chan Lee, Karam Choi, Min Young Kim, Hee Chan Kim, Young Min Cho, Sungwan Kim
Journal of Korean Medical Science.2014; 29(3): 378. CrossRef
Metabolic, hormonal characteristics and genetic variants of TCF7L2 associated with development of gestational diabetes mellitus in Mexican women
Ruth Reyes‐López, Elva Pérez‐Luque, Juan Manuel Malacara
Diabetes/Metabolism Research and Reviews.2014; 30(8): 701. CrossRef
Reduced postprandial GLP‐1 responses in women with gestational diabetes mellitus
L. Bonde, T. Vilsbøll, T. Nielsen, J. I. Bagger, J. A. Svare, J. J. Holst, S. Larsen, F. K. Knop
Diabetes, Obesity and Metabolism.2013; 15(8): 713. CrossRef
Women with normal glucose tolerance and a history of gestational diabetes show significant impairment of β-cell function at normal insulin sensitivity
P. Molęda, K. Homa, K. Safranow, Z. Celewicz, A. Fronczyk, L. Majkowska
Diabetes & Metabolism.2013; 39(2): 155. CrossRef

Effects of 'Ubiquitous Healthcare' on the Ability of Self-Management in Elderly Diabetic Patients.: Sung Hoon Yu, Sun Hee Kim, So Yeon Kim, Sung Hee Choi, Soo Lim, Yoon Seok Chang, Hak Jong Lee, Young Joo Park, Hak Chul Jang; Korean Diabetes J. 2009;33(1):58-64. Published online February 1, 2009; DOI: https://doi.org/10.4093/kdj.2009.33.1.58

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Abstract PDF

BACKGROUND
The need for a new healthcare system is growing due to the paradigm shift from health supervision to health maintenance. Previously, we performed a pilot study that examined the effectiveness of a ubiquitous healthcare (U-healthcare) diabetes management program which consists of self-monitoring of blood glucose (SMBG) and mobile phone services for elderly patients with type 2 diabetes mellitus. In this study, we investigated the effect of a diabetes management program using U-healthcare based on the self-care skills of elderly patients with diabetes mellitus. METHODS: From July to October 2005, 17 patients were recruited and provided with a blood glucometer with the ZigBee module and a mobile phone. In addition, the patients' understanding of diabetes self-care skills was examined at the beginning and end of the study. At the end of the study, we determined the level of patient satisfaction regarding U-healthcare services. RESULTS: The patients' test scores on their understanding of diabetes mellitus improved from 57.2 +/- 20.7 to 72.7 +/- 13.4%. Specifically, patient knowledge of the basic principles for a proper diabetic diet (52.9% vs. 82.4%, P = 0.046), foods that influence blood sugar level (41.2% vs. 76.5%, P = 0.007) and the influence of beverage choice (41.2% vs. 64.7%, P = 0.007), all increased. In addition, a significant increase in knowledge of living standards regarding diabetes mellitus was observed (64.7% vs. 88.2%, P = 0.0032). CONCLUSION: We conclude that the U-healthcare incorporating SMBG could be promising, as it improves self-management skills of diabetes mellitus patients, as well as their understanding of the disease.

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Self-management of Chronic Conditions Using mHealth Interventions in Korea: A Systematic Review
Jae Yoon Yi, Yujin Kim, Yoon-Min Cho, Hongsoo Kim
Healthcare Informatics Research.2018; 24(3): 187. CrossRef
Effectiveness of the Smart Care Service for Diabetes Management
Young-Soon Chung, Yongsuk Kim, Chang Hee Lee
Healthcare Informatics Research.2014; 20(4): 288. CrossRef
Ubiquitous Healthcare Service Has the Persistent Benefit on Glycemic Control and Body Weight in Older Adults With Diabetes
Seon Mee Kang, Min Joo Kim, Hwa Young Ahn, Ji Won Yoon, Min Kyong Moon, Hye Seung Jung, Sung Hee Choi, Soo Lim, Kyong Soo Park, Hak C. Jang
Diabetes Care.2012; 35(3): e19. CrossRef
Improved Glycemic Control Without Hypoglycemia in Elderly Diabetic Patients Using the Ubiquitous Healthcare Service, a New Medical Information System
Soo Lim, Seon Mee Kang, Hayley Shin, Hak Jong Lee, Ji Won Yoon, Sung Hoon Yu, So-Youn Kim, Soo Young Yoo, Hye Seung Jung, Kyong Soo Park, Jun Oh Ryu, Hak C. Jang
Diabetes Care.2011; 34(2): 308. CrossRef
A Survey on Ubiquitous Healthcare Service Demand among Diabetic Patients
Soo Lim, So-Youn Kim, Jung Im Kim, Min Kyung Kwon, Sei Jin Min, Soo Young Yoo, Seon Mee Kang, Hong Il Kim, Hye Seung Jung, Kyong Soo Park, Jun Oh Ryu, Hayley Shin, Hak Chul Jang
Diabetes & Metabolism Journal.2011; 35(1): 50. CrossRef

Association between Apolipoprotein E Polymorphism and Type 2 Diabetes in Subjects Aged 65 or Over.: You Jin Lee, Hak Chul Jang, Eun Hye Kim, Hye Jin Kim, Seok Bum Lee, Sung Hee Choi, Soo Lim, Kyoung Un Park, Young Joo Park, Ki Woong Kim; Korean Diabetes J. 2008;32(1):30-37. Published online February 1, 2008; DOI: https://doi.org/10.4093/kdj.2008.32.1.30

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BACKGROUND
Increased prevalence of diabetes in recent years is linked with increased cardiovascular morbidity and mortality. Apolipoprotein E (apo E) polymorphism is well known to be related to hyperlipidemia and coronary heart disease, but only a few studies investigated the association between apo E polymorphism and diabetes or insulin resistance. In Korea, two studies with relatively small subjects reported controversial results. Therefore, we investigated the association between apo E polymorphism and diabetes in elderly community population. METHODS: 982 elderly people aged 65 or over in Seongnam city were enrolled. We measured anthropometric variables and blood pressure and performed biochemical tests including fasting glucose, fasting insulin, HbA1c, and lipid profiles. Apo E polymorphism was determined by PCR-RFLP method. RESULTS: Frequencies of apo E isoforms and alleles were similar to those of other reports. Subjects with e4 allele had significantly higher total and LDL-cholesterol levels. However, there were no differences in cholesterol levels between normal subjects and diabetes. Diabetes was not related to apo E polymorphism. CONCLUSION: In Korean aged 65 or over, subjects with diabetes didn't have increased total or LDL-cholesterol, triglyceride, and decreased HDL-cholesterol levels. Diabetes and apo E polymorphism were not related.

Citations

Citations to this article as recorded by

Association of APOE genotype with lipid profiles and type 2 diabetes mellitus in a Korean population
Jung Yeon Seo, Byeong Ju Youn, Hyun Sub Cheong, Hyoung Doo Shin
Genes & Genomics.2021; 43(7): 725. CrossRef
Sarcopenia, Frailty, and Diabetes in Older Adults
Hak Chul Jang
Diabetes & Metabolism Journal.2016; 40(3): 182. CrossRef

Genetic Association of Adiponectin Polymorphisms with Risk of Type 2 Diabetes Mellitus.: Yun Yong Lee, Nam Seok Lee, Young Min Cho, Min Kyong Moon, Hye Seung Jung, Young Joo Park, Hong Je Park, Byoung Soo Youn, Hong Kyu Lee, Kyong Soo Park, Hyoung Doo Shin; Korean Diabetes J. 2003;27(6):438-448. Published online December 1, 2003

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Abstract PDF: BACKGROUND
Adiponectin, an adipocyte-secreted protein, is known to modulate insulin sensitivity, glucose homeostasis and the development of atherosclerosis. Recently, several single nucleotide polymorphisms (SNPs) in the adiponectin gene have been reported to be associated with type 2 diabetes and components of the insulin resistance syndrome. METHODS: The frequencies of SNP T45G and G276T of the adiponectin gene was examined in 493 unrelated type 2 diabetic and 136 non-diabetic control Korean subjects. The clinical characteristics and plasma adiponectin levels of the subjects were compared within these genotypes. RESULTS: The T allele at SNP45 was significantly more frequent in the type 2 diabetes than in the control subjects (71.6 vs. 64.3%, p=0.013). The subjects with the G/G genotype of SNP45 were at reduced risk for type 2 diabetes (OR: 0.495, 95% CI 0.246-0.995, p=0.048) compared with those having the T/T genotype. However, there were no statistically significant differences in allele the frequencies (G frequency in the control vs. the diabetic group 73.9 vs. 68.9%, p=0.106) and genotype frequencies at SNP276 between groups. The subjects with the T/T genotype at SNP45 had higher a body mass index (24.6+/- 3.1 vs. 24.1+/-2.8 kg/m2, p=0.036) and serum triglyceride levels (2.03+/-1.31 vs. 1.87+/-1.38 mmol/1, p=0.041) than the T/G+G/G genotypes in the diabetic group. Those with the T/T genotype also had lower plasma adiponectin levels than those without T/T genotype at SNP45 in the control group (6.11+/-3.10 vs. 8.24+/-4.24 g/mL, p=0.043). There was a similar trend in diabetic group, but this did not reach statistical significance (4.32+/-2.81 vs. 4.96+/-3.26 g/mL, p=0.097). The SNP276 had no association with the clinical features of insulin resistance or plasma adiponectin level. CONCLUSION: The T/T genotype of SNP45 in the adiponectin gene was associated with a low adiponectin level, high body mass index, the serum triglyceride level and risk of type 2 diabetes mellitus. The SNP276 in the adiponectin gene may not be an important determinant of insulin resistance or type 2 diabetes in Korean subjects.

Plasminogen Activator Inhibitor-1 (PAI-1)/tissue Plasminogen Activator (t-PA) Levels and PAI-1 4G/5G Promoter Polymorphism in Type 2 Diabetes with Microalbuminuria.: Seong Hee Kwon, Young Joo Park, In Kyong Jeong, Jae Joon Koh, Kyong Soo Park, Seong Yeon Kim, Hong Kyu Lee; Korean Diabetes J. 2003;27(3):186-198. Published online June 1, 2003

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Abstract PDF: BACKGROUND
Persistent microalbuminuria in diabetic patients is a risk factor of cardiovascular mortality. Increased plasma plasminogen activator inhibitor type-1 (PAI-1) levels have been observed in diabetic patients with overt nephropathy. However, there have been few studies on diabetic patients with microalbuminuria. The expression of PAI-1 may be influenced by the polymorphism of the PAI-1 genotype promoter. The aim of this study was to investigate the relationship between the plasma PAI-1/t-PA levels, polymorphism of the PAI-1 4G/5G promoter and microalbuminuria in type 2 diabetes. METHODS: The plasma PAI-1/t-PA levels and polymorphisms of the PAI-1 promoter were measured in type 2 diabetic patients without nephropathy (n=30), and with microalbuminuria (n=30) and overt proteinuria (n=20). The correlation between the amount of urinary albumin excretion and plasma PAI-1/t-PA levels were investigated using Pearson's correlation analyses. RESULTS: The plasma PAI-1/t-PA levels and polymorphisms of the PAI-1 promoter showed no significant difference between the three groups in relation to the urinary albumin excretion. There were no differences in the plasma PAI-1/t-PA levels between the genotypes of the polymorphism of the PAI-1 promoter. No association was found between the amount of urinary albumin excretion and the plasma PAI-1/t-PA levels and genotypes of the polymorphism of the PAI-1 promoter. CONCLUSION: These results show that there was no decrease in the fibrinolytic state in type 2 diabetics with microalbuminuria, compared to normoalbuminuria, which also suggest that polymorphisms of the PAI-1 4G/5G promoter do not affect the plasma PAI-1/t-PA levels in type 2 diabetic patients with microalbuminuria.

Expression of ghrelin and its receptor according to feeding state in rats.: Min Seon Kim, Cho Ya Yoon, Young Joo Park, Hyung Kyu Park, Chen Ji Jin, Kyong Han Park, Chan Soo Shin, Kyong Soo Park, Seong Youn Kim, Bo Youn Cho, Hong Kyu Lee; Korean Diabetes J. 2002;26(3):169-178. Published online June 1, 2002

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Abstract PDF: BACKGROUND
Ghrelin is a newly discovered gut peptide, produced mainly in the stomach, which is secreted into the circulating blood and acts on the hypothalamus and the pituitary gland. Although ghrelin was originally identified as an endogenous growth hormone secretagogue, recent studies have suggested its role is in the regulation of food intake and energy homeostasis. The aim of this study was to investigate changes in the expression of ghrelin in the stomach, and of its receptors in the hypothalamus and the pituitary gland in relation to the feeding state. METHODS: Sprague Dawley male rats, divided into 3 groups, freely fed, fasted for 48 hrs and fasted for 48 hrs followed by feeding for 24 hrs, were investigated. The stomach fundus, the hypothalamus and the pituitary glands were collected. The gastric ghrelin mRNA expression was determined by Northern blot analysis and the ghrelin protein by immunohistochemistry. The ghrelin receptor mRNA levels in the hypothalamus and anterior pituitary gland were determined by real time PCR. RESULTS: The ghrelin mRNA levels in the stomach were increased by fasting but reduced again by allowing feeding. The number of ghrelin-immunoreactive gastric epithelial cells tended to increase with fasting. Moreover, the ghrelin receptor mRNA levels increased fold in the hypothalamus, and about 3 fold in the anterior pituitary gland harvested from the rats that had fasted for 48 hrs compared to those that were freely fed. CONCLUSION: Our data demonstrate that expression of both ghrelin in stomach and its receptor in target organs increased in the fasted state, which would be helpful for magnifying the orexigenic effect of ghrelin in the negative energy balance state. Dynamic changes in ghrelin and ghrelin receptor according to altered metabolic state may suggest a physiologic role of ghrelin in the regulation of energy homeostasis.

Comparison of Clinical Characteristics of Impaired Fasting Glucose with Impaired Glucose Tolerance in Yonchon County.: In Kyong Jeong, Min Kyong Moon, Sang Wan Kim, Young Joo Park, Sun Yuk Kim, Chan Soo Shin, Do Joon Park, Kyong Soo Park, Seong Yeon Kim, Bo Youn Cho, Noe Kyeong Kim, Hong Kyu Lee; Korean Diabetes J. 2000;24(1):71-77. Published online January 1, 2001

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Abstract PDF: BACKGROUND
To compare the clinical characteristics of 1997 American Diabetes Association (ADA) impaired fasting glucose (IFG) based on fasting plasma glucose (FPG) with World Health Organization (WHO) impaired glucose tolerance (IGT) based on oral glucose tolerance test (OGTT) in a Korean population. METHODS: The analyses were based on the data of 2,251 subjects aged 30-80 years obtained from the surveys of Yonchon County in Korea in 1993, and the data of 1084 subjects participated in the follow-up survey in 1995. Prevalence of glucose tolerance categories was obtained by using WHO and ADA criteria, and the level of agreement was estimated by index. Cardiovascular risk profile and the incidence of diabetes based on the ADA criteria after 2 years were compared by focusing on the discordant ctiagnostic categories namely IGT/NFS in which the subjects were diagnosed as IGT by WHO criteria but normal fasting glucose(NFG) by ADA criteria and NGT/IFG diagnosed as normal glucose tolerance(NGT) by WHO but IFG by ADA. Results The ADA criteria failed to diagnose 69% of IGT patients, that is 62% of them were considered normal and 7% as diabetes. The overall agreement was poor (x statistics = 0.32, p<0.05). Subjects classified into IGT/NFG or NGT/IFG showed the worse cardiovascular risk profile and higher incidence of diabetes than NGT/NFG. Especially, subjects with NGT/IFG exhibited higher incidence of diabetes than those with IGT/NFG. CONCLUSION: Although IFG predicts subsequent development of diabetes much better than IGT, the vast majority of the subjects with IGT will be missed according to ADA criteria based on FPG only. Consequently FPG alone could be an inadequate substitute for the OGTT.

Evaluation of Fasting Plasma Glucose to Diagnose Diabetes in Yonchon County.: Young Joo Park, In Kyoung Chung, Chan Soo Shin, Kyong Soo Park, Seong Yeon Kim, Hong Kyu Lee, Sun Ja Kwon; Korean Diabetes J. 1998;22(3):372-380. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Recently, many studies were performed to evaluate the diagnostic value of fasting plasma glucose to diagnose diabetes, and the diagnostic criteria were revised by ADA in 1997 to avoid discrepancy between the fasting plasma glucose (FPG) and 2 hour post-load plasma glucose(2hPG) cutpoint values after 75g oral glucose loading and to alsc facilitate and encourage the use of test for diagnosing diabetes. This study was performed to assess the performance of different cutpoint of fasting plasma glucose in the diagnosis of diabetes and to compare the prevalence and incidence of diabetes using revised 1997 ADA FPG criterion with those using 1985 WHO criteria in Yonchon County of Korea. METHODS: Two thousand three hundred fifty-six subjects who participated in population based cross-sectional study in Yonchon County in 1993. We have also analysed the data from 1141 subjects who were non-diabetic in 1993 and participated in the follow-up survey in 1995. The relationship between FPG and 2hPG were determined using sensitivity, specificity and the prevalence of diabetes according to FPG and/or 2hPG values. We have determined the prevalence and the incidence of diabetes using the ADA criterion. RESULTS: Based on WHO criteria, a FPG of 6.1 mmol/L(110mg/dL) was determined to yield optimal sensitivity(83.6%) and specificity(82.4%), but it showed low positive predictive value(27.2%) and high prevalence(24.5%). The FPG cutpoint which showed same prevalence with the criterion ot the 2hPG >11.1mmol/L(87 in 2251) was 7.4mmol/L (133mg/dL, 87 in 2251), The crude prevalence of diabetes and impaired fasting glucose by ADA criterion were 9.6% and 14.9%, respectively, where as the crude prevalence of diabetes and IGT were 9.4% and 11.5% by WHO criteria. The crude incidence of diabetes was 5.1% as defined by ADA criterion and 34.4% of subjects who showed impaired fasting glucose in 1993 converted to diabetes in 1995, whereas the incidence was 2.5% by WHO criteria and 13% of IGT subjeets converted to diabetes in 2 years. Conclusions: The adequate cutpoint for FPG seems to lie between 6.1mmol/L and 7.4mmol/L. The 1997 ADA criterion of the FPG > 7.0mmol/L produced similar prevalence and higher incidence than those obtained from 1985 WHO criteria and the former seems to be better to detect the risk group who may progress to diabetes.

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