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COVID-19
Does Diabetes Increase the Risk of Contracting COVID-19? A Population-Based Study in Korea
Sung-Youn Chun, Dong Wook Kim, Sang Ah Lee, Su Jung Lee, Jung Hyun Chang, Yoon Jung Choi, Seong Woo Kim, Sun Ok Song
Diabetes Metab J. 2020;44(6):897-907.   Published online December 23, 2020
DOI: https://doi.org/10.4093/dmj.2020.0199
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  • 8 Web of Science
  • 7 Crossref
AbstractAbstract PDFPubReader   ePub   
Background
This study aimed to determine the infection risk of coronavirus disease 2019 (COVID-19) in patients with diabetes (according to treatment method).
Methods
Claimed subjects to the Korean National Health Insurance claims database diagnosed with COVID-19 were included. Ten thousand sixty-nine patients with COVID-19 between January 28 and April 5, 2020, were included. Stratified random sampling of 1:5 was used to select the control group of COVID-19 patients. In total 50,587 subjects were selected as the control group. After deleting the missing values, 60,656 subjects were included.
Results
Adjusted odds ratio (OR) indicated that diabetic insulin users had a higher risk of COVID-19 than subjects without diabetes (OR, 1.25; 95% confidence interval [CI], 1.03 to 1.53; P=0.0278). In the subgroup analysis, infection risk was higher among diabetes male insulin users (OR, 1.42; 95% CI, 1.07 to 1.89), those between 40 and 59 years (OR, 1.66; 95% CI, 1.13 to 2.44). The infection risk was higher in diabetic insulin users with 2 to 4 years of morbidity (OR, 1.744; 95% CI, 1.003 to 3.044).
Conclusion
Some diabetic patients with certain conditions would be associated with a higher risk of acquiring COVID-19, highlighting their need for special attention. Efforts are warranted to ensure that diabetic patients have minimal exposure to the virus. It is important to establish proactive care and screening tests for diabetic patients suspected with COVID-19 for timely disease diagnosis and management.

Citations

Citations to this article as recorded by  
  • Risk factors for SARS-CoV-2 infection during the early stages of the COVID-19 pandemic: a systematic literature review
    Matthew Harris, John Hart, Oashe Bhattacharya, Fiona M. Russell
    Frontiers in Public Health.2023;[Epub]     CrossRef
  • Diabetes mellitus, maternal adiposity, and insulin-dependent gestational diabetes are associated with COVID-19 in pregnancy: the INTERCOVID study
    Brenda Eskenazi, Stephen Rauch, Enrico Iurlaro, Robert B. Gunier, Albertina Rego, Michael G. Gravett, Paolo Ivo Cavoretto, Philippe Deruelle, Perla K. García-May, Mohak Mhatre, Mustapha Ado Usman, Mohamed Elbahnasawy, Saturday Etuk, Raffaele Napolitano, S
    American Journal of Obstetrics and Gynecology.2022; 227(1): 74.e1.     CrossRef
  • The Role of Diabetes and Hyperglycemia on COVID-19 Infection Course—A Narrative Review
    Evangelia Tzeravini, Eleftherios Stratigakos, Chris Siafarikas, Anastasios Tentolouris, Nikolaos Tentolouris
    Frontiers in Clinical Diabetes and Healthcare.2022;[Epub]     CrossRef
  • COVID-19 and Gestational Diabetes: The Role of Nutrition and Pharmacological Intervention in Preventing Adverse Outcomes
    Ruben Ramirez Zegarra, Andrea Dall’Asta, Alberto Revelli, Tullio Ghi
    Nutrients.2022; 14(17): 3562.     CrossRef
  • A Comprehensive Analysis of Chinese, Japanese, Korean, US-PIMA Indian, and Trinidadian Screening Scores for Diabetes Risk Assessment and Prediction
    Norma Latif Fitriyani, Muhammad Syafrudin, Siti Maghfirotul Ulyah, Ganjar Alfian, Syifa Latif Qolbiyani, Muhammad Anshari
    Mathematics.2022; 10(21): 4027.     CrossRef
  • The World-Wide Adaptations of Diabetic Management in the Face of COVID-19 and Socioeconomic Disparities: A Scoping Review
    Jaafar Abou-Ghaida, Annalia Foster, Sarah Klein, Massah Bassie, Khloe Gu, Chloe Hille, Cody Brown, Michael Daniel, Caitlin Drakeley, Alek Jahnke, Abrar Karim, Omar Altabbakh, Luzan Phillpotts
    Cureus.2022;[Epub]     CrossRef
  • Dissection of non-pharmaceutical interventions implemented by Iran, South Korea, and Turkey in the fight against COVID-19 pandemic
    Mohammad Keykhaei, Sogol Koolaji, Esmaeil Mohammadi, Reyhaneh Kalantar, Sahar Saeedi Moghaddam, Arya Aminorroaya, Shaghayegh Zokaei, Sina Azadnajafabad, Negar Rezaei, Erfan Ghasemi, Nazila Rezaei, Rosa Haghshenas, Yosef Farzi, Sina Rashedi, Bagher Larijan
    Journal of Diabetes & Metabolic Disorders.2021; 20(2): 1919.     CrossRef
Drug/Regimen
Efficacy and Safety of Omega-3 Fatty Acids in Patients Treated with Statins for Residual Hypertriglyceridemia: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial
Ji Eun Jun, In-Kyung Jeong, Jae Myung Yu, Sung Rae Kim, In Kye Lee, Kyung-Ah Han, Sung Hee Choi, Soo-Kyung Kim, Hyeong Kyu Park, Ji-Oh Mok, Yong-ho Lee, Hyuk-Sang Kwon, So Hun Kim, Ho-Cheol Kang, Sang Ah Lee, Chang Beom Lee, Kyung Mook Choi, Sung-Ho Her, Won Yong Shin, Mi-Seung Shin, Hyo-Suk Ahn, Seung Ho Kang, Jin-Man Cho, Sang-Ho Jo, Tae-Joon Cha, Seok Yeon Kim, Kyung Heon Won, Dong-Bin Kim, Jae Hyuk Lee, Moon-Kyu Lee
Diabetes Metab J. 2020;44(1):78-90.   Published online June 20, 2019
DOI: https://doi.org/10.4093/dmj.2018.0265
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  • 7 Web of Science
  • 7 Crossref
AbstractAbstract PDFSupplementary MaterialPubReader   
Background

Cardiovascular risk remains increased despite optimal low density lipoprotein cholesterol (LDL-C) level induced by intensive statin therapy. Therefore, recent guidelines recommend non-high density lipoprotein cholesterol (non-HDL-C) as a secondary target for preventing cardiovascular events. The aim of this study was to assess the efficacy and tolerability of omega-3 fatty acids (OM3-FAs) in combination with atorvastatin compared to atorvastatin alone in patients with mixed dyslipidemia.

Methods

This randomized, double-blind, placebo-controlled, parallel-group, and phase III multicenter study included adults with fasting triglyceride (TG) levels ≥200 and <500 mg/dL and LDL-C levels <110 mg/dL. Eligible subjects were randomized to ATOMEGA (OM3-FAs 4,000 mg plus atorvastatin calcium 20 mg) or atorvastatin 20 mg plus placebo groups. The primary efficacy endpoints were the percent changes in TG and non-HDL-C levels from baseline at the end of treatment.

Results

After 8 weeks of treatment, the percent changes from baseline in TG (−29.8% vs. 3.6%, P<0.001) and non-HDL-C (−10.1% vs. 4.9%, P<0.001) levels were significantly greater in the ATOMEGA group (n=97) than in the atorvastatin group (n=103). Moreover, the proportion of total subjects reaching TG target of <200 mg/dL in the ATOMEGA group was significantly higher than that in the atorvastatin group (62.9% vs. 22.3%, P<0.001). The incidence of adverse events did not differ between the two groups.

Conclusion

The addition of OM3-FAs to atorvastatin improved TG and non-HDL-C levels to a significant extent compared to atorvastatin alone in subjects with residual hypertriglyceridemia.

Citations

Citations to this article as recorded by  
  • Association Between Omega‐3 Fatty Acid Intake and Dyslipidemia: A Continuous Dose–Response Meta‐Analysis of Randomized Controlled Trials
    Tianjiao Wang, Xin Zhang, Na Zhou, Yuxuan Shen, Biao Li, Bingshu E. Chen, Xinzhi Li
    Journal of the American Heart Association.2023;[Epub]     CrossRef
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    E. V. Gracheva, E. A. Starovoytova, E. S. Kulikov, N. A. Kirillova, S. V. Fedosenko, M. A. Balaganskaya, D. V. Kromka
    Rational Pharmacotherapy in Cardiology.2023; 19(3): 298.     CrossRef
  • Effect of coadministration of omega-3 fatty acids with glimepiride on glycemic control, lipid profile, irisin, and sirtuin-1 in type 2 diabetes mellitus patients: a randomized controlled trial
    Rehab H. Werida, Aalaa Ramzy, Youssri Nassief Ebrahim, Maged Wasfy Helmy
    BMC Endocrine Disorders.2023;[Epub]     CrossRef
  • The Effect of Dietary Interventions on Hypertriglyceridemia: From Public Health to Molecular Nutrition Evidence
    Karla Paulina Luna-Castillo, Xochitl Citlalli Olivares-Ochoa, Rocío Guadalupe Hernández-Ruiz, Iris Monserrat Llamas-Covarrubias, Saraí Citlalic Rodríguez-Reyes, Alejandra Betancourt-Núñez, Barbara Vizmanos, Erika Martínez-López, José Francisco Muñoz-Valle
    Nutrients.2022; 14(5): 1104.     CrossRef
  • The effect of omega-3 fatty acids and its combination with statins on lipid profile in patients with hypertriglyceridemia: A systematic review and meta-analysis of randomized controlled trials
    Yunjiao Yang, Wen Deng, Yanmei Wang, Tongyi Li, Yiding Chen, Cong Long, Qing Wen, Yue Wu, Qiu Chen
    Frontiers in Nutrition.2022;[Epub]     CrossRef
  • Comparison of the Efficacy and Safety of Atorvastatin 40 mg/ω-3 Fatty Acids 4 g Fixed-dose Combination and Atorvastatin 40 mg Monotherapy in Hypertriglyceridemic Patients who Poorly Respond to Atorvastatin 40 mg Monotherapy: An 8-week, Multicenter, Random
    Jong Shin Woo, Soon Jun Hong, Dong Hoon Cha, Kee Sik Kim, Moo Hyun Kim, Jun-Won Lee, Myung Ho Jeong, Jin-Ok Jeong, Jun-Hee Lee, Doo Soo Jeon, Eun Joo Cho, Soon Kil Kim, Jun Kwan, Chang Gyu Park, Hae Young Lee, Taek Jong Hong, Jinho Shin, Ho Joong Youn, Do
    Clinical Therapeutics.2021; 43(8): 1419.     CrossRef
  • All-Cause Mortality and Cardiovascular Death between Statins and Omega-3 Supplementation: A Meta-Analysis and Network Meta-Analysis from 55 Randomized Controlled Trials
    Jeongseon Kim, Tung Hoang, Ji-Myung Kim, So Young Bu, Jeong-Hwa Choi, Eunju Park, Seung-Min Lee, Eunmi Park, Ji Yeon Min, In Seok Lee, So Young Youn, Jee-Young Yeon
    Nutrients.2020; 12(10): 3203.     CrossRef
Various Oscillation Patterns of Serum Fibroblast Growth Factor 21 Concentrations in Healthy Volunteers
Sang Ah Lee, Eunheiu Jeong, Eun Hee Kim, Mi-Seon Shin, Jenie Yoonoo Hwang, Eun Hee Koh, Woo Je Lee, Joong-Yeol Park, Min-Seon Kim
Diabetes Metab J. 2012;36(1):29-36.   Published online February 17, 2012
DOI: https://doi.org/10.4093/dmj.2012.36.1.29
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  • 13 Crossref
AbstractAbstract PDFPubReader   
Background

Fibroblast growth factor 21 (FGF21) was originally identified as a paroxysm proliferator activated receptor-α target gene product and is a hormone involved in metabolic regulation. The purpose of this study was to investigate the diurnal variation of serum FGF21 concentration in obese and non-obese healthy volunteers.

Methods

Blood samples were collected from five non-obese (body mass index [BMI] ≤23 kg/m2) and five obese (BMI ≥25 kg/m2) healthy young men every 30 to 60 minutes over 24 hours. Serum FGF21 concentrations were determined by radioimmunoassay. Anthropometric parameters, glucose, free fatty acid, insulin, leptin, and cortisol concentrations were also measured.

Results

The serum FGF21 concentrations displayed various individual oscillation patterns. The oscillation frequency ranged between 6 and 12 times per day. The average duration of oscillation was 2.52 hours (range, 1.9 to 3.0 hours). The peaks and troughs of FGF21 oscillation showed no circadian rhythm. However, the oscillation frequency had a diurnal variation and was lower during the light-off period than during the light-on period (2.4 vs. 7.3 times, P<0.001). There was no difference in the total frequency or duration of oscillations between non-obese and obese subjects, but obese individuals had increased numbers of larger oscillations (amplitude ≥0.19 ng/mL).

Conclusion

Various oscillation patterns in serum FGF21 concentration were observed, and reduced oscillation frequencies were seen during sleep. The oscillation patterns of serum FGF21 concentration suggest that FGF21 may be secreted into systemic circulation in a pulsatile manner. Obesity appeared to affect the amplitude of oscillations of serum FGF21.

Citations

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    Zhenning Yang, Helmut Zarbl, Grace L. Guo
    Molecular Pharmacology.2024; 105(3): 179.     CrossRef
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    Jae Seung Chang, Jhii-Hyun Ahn, Seong Hee Kang, Sang-Baek Koh, Jang-Young Kim, Soon Koo Baik, Ji Hye Huh, Samuel S. Lee, Moon Young Kim, Kyu-Sang Park
    Frontiers in Endocrinology.2022;[Epub]     CrossRef
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    Bo Angelin, Tobias E. Larsson, Mats Rudling
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    Daniel Cuevas-Ramos, Carlos A. Aguilar-Salinas, Francisco J. Gómez-Pérez
    Current Opinion in Pediatrics.2012; 24(4): 523.     CrossRef
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    Ji A Seo, Nan Hee Kim
    Diabetes & Metabolism Journal.2012; 36(1): 26.     CrossRef
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The Prevalence of Peripheral Arterial Disease in Korean Patients with Type 2 Diabetes Mellitus Attending a University Hospital
Ji Hee Yu, Jenie Yoonoo Hwang, Mi-Seon Shin, Chang Hee Jung, Eun Hee Kim, Sang Ah Lee, Eun Hee Koh, Woo Je Lee, Min-Seon Kim, Joong-Yeol Park, Ki-Up Lee
Diabetes Metab J. 2011;35(5):543-550.   Published online October 31, 2011
DOI: https://doi.org/10.4093/dmj.2011.35.5.543
  • 4,273 View
  • 49 Download
  • 20 Crossref
AbstractAbstract PDFPubReader   
Background

Peripheral arterial disease (PAD) is a common manifestation of systemic atherosclerosis and is associated with significant morbidity and mortality. Diabetes is known to increase the risk of PAD two- to four-fold. The prevalence of PAD in Korean diabetic patients has not been established. In this study, we investigated the prevalence of PAD in Korean patients with type 2 diabetes attending a large university hospital and analyzed the factors associated with PAD.

Methods

A total of 2,002 patients with type 2 diabetes who underwent ankle-brachial index (ABI) measurement in an outpatient clinic were enrolled. PAD was defined as an ABI ≤0.9. Clinical characteristics of 64 patients with PAD were compared with those of 192 age- and sex-matched control patients without PAD.

Results

Of the 2,002 type 2 diabetic patients, 64 (3.2%) were diagnosed as having PAD. PAD was associated with higher prevalences of retinopathy, nephropathy, neuropathy, cerebrovascular and coronary artery disease. Patients with PAD had higher systolic blood pressure and serum triglyceride level and reported higher pack-years of smoking. Multivariate analysis showed that the presence of micro- and macrovascular complications and high systolic blood pressure are factors independently associated with PAD.

Conclusion

The prevalence of PAD in diabetic patients was 3.2%, suggesting that the prevalence in Korean diabetic patients is lower than that of patients in Western countries.

Citations

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  • Impaired Cardiovagal Activity as a Link Between Hyperglycemia and Arterial Stiffness in Adults With Type 2 Diabetes Mellitus Patients Among an Eastern Indian Population: A Cross-sectional Study
    Nibedita Priyadarsini, Devineni Likhitha, Madumathy Ramachandran, Kishore Kumar Behera
    Canadian Journal of Diabetes.2023;[Epub]     CrossRef
  • The Predictability of Cystatin C for Peripheral Arterial Disease in Chinese Population with Type 2 Diabetes Mellitus
    Luna Liu, Hai Wang, Jing Ning, Junming Han, Chunxiao Yu, Qingbo Guan, Hiroshi Okamoto
    Journal of Diabetes Research.2022; 2022: 1.     CrossRef
  • Atherectomy in Peripheral Artery Disease: Current and Future
    Yohan Kwon, Jinoo Kim, Je-Hwan Won, Seong Ho Kim, Jeong-Eun Kim, Sung-Joon Park
    Journal of the Korean Society of Radiology.2021; 82(3): 551.     CrossRef
  • Peripheral arterial disease and its correlates in patients with type 2 diabetes mellitus in a teaching hospital in northern Nigeria: a cross-sectional study
    Orighomisan Freda Agboghoroma, Fatai Momodu Akemokwe, Fabian H. Puepet
    BMC Cardiovascular Disorders.2020;[Epub]     CrossRef
  • The significance of ankle-brachial index in determining peripheral artery disease in patients with type 2 diabetes mellitus over 40 years of age and the relationship of peripheral artery disease with chronic complications of diabetes
    Tuğçe Nur YİĞENOĞLU, Medine KEBAPÇI, Hülya ÖZEN
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    Mei-Yueh Lee, Pi-Jung Hsiao, Jiun-Chi Huang, Wei-Hao Hsu, Szu-Chia Chen, Jer-Ming Chang, Shyi–Jang Shin
    Scientific Reports.2018;[Epub]     CrossRef
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    Qin-Fen Chen, Dan Cao, Ting-Ting Ye, Hui-Hui Deng, Hong Zhu
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    M.Á. Tresierra-Ayala, A. García Rojas
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  • Abnormally Low or High Ankle-Brachial Index Is Associated with Proliferative Diabetic Retinopathy in Type 2 Diabetic Mellitus Patients
    Szu-Chia Chen, Pi-Jung Hsiao, Jiun-Chi Huang, Kun-Der Lin, Wei-Hao Hsu, Yu-Li Lee, Mei-Yueh Lee, Jer-Ming Chang, Shyi–Jang Shin, Xiao-Feng Yang
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    Won Jun Kim, Cheol-Young Park
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Lack of Association between Serum Cystatin C Levels and Coronary Artery Disease in Diabetic Patients
Eun Hee Kim, Ji Hee Yu, Sang Ah Lee, Eui Young Kim, Won Gu Kim, Seung Hun Lee, Eun Hee Cho, Eun Hee Koh, Woo Je Lee, Min-Seon Kim, Joong-Yeol Park, Ki-Up Lee
Korean Diabetes J. 2010;34(2):95-100.   Published online April 30, 2010
DOI: https://doi.org/10.4093/kdj.2010.34.2.95
  • 4,427 View
  • 31 Download
  • 7 Crossref
AbstractAbstract PDFPubReader   
Background

Serum cystatin C level is a more sensitive marker of renal dysfunction than serum creatinine level. Serum cystatin C level was recently reported to predict the development of cardiovascular disease. This study was performed to evaluate whether the cystatin C level is associated with coronary artery disease (CAD), independent of diabetic nephropathy.

Methods

We conducted a case-control study to assess the relationship between serum cystatin C level and coronary artery disease in diabetic patients. Among 460 diabetic patients, 38 diabetic patients had CAD. The control group consisted of 38 diabetic patients who were matched to cases by age, sex, and presence/absence of diabetic nephropathy. Serum cystatin C level was measured in stored samples.

Results

Serum cystatin C level was significantly higher in patients with diabetic nephropathy, both in CAD and non-CAD patients. However, serum cystatin C level did not differ between CAD and non-CAD patients, regardless of diabetic nephropathy.

Conclusion

Serum cystatin C level is a marker of renal dysfunction, but not coronary artery disease, in diabetic patients.

Citations

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    Xie Qing, Wang Furong, Liu Yunxia, Zhang Jian, Wang Xuping, Gao Ling
    Cardiovascular Diabetology.2012;[Epub]     CrossRef
  • Response: Lack of Association between Serum Cystatin C Levels and Coronary Artery Disease in Diabetic Patients (Korean Diabetes J 2010;34:95-100)
    Eun Hee Kim, Ki-Up Lee
    Korean Diabetes Journal.2010; 34(3): 209.     CrossRef
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    Jee-Young Oh
    Korean Diabetes Journal.2010; 34(2): 84.     CrossRef
  • Letter: Lack of Association between Serum Cystatin C Levels and Coronary Artery Disease in Diabetic Patients (Korean Diabetes J 2010;34:95-100)
    Kyu-Chang Won
    Korean Diabetes Journal.2010; 34(3): 207.     CrossRef
Nitric Oxide Increases Insulin Sensitivity in Skeletal Muscle by Improving Mitochondrial Function and Insulin Signaling.
Woo Je Lee, Hyoun Sik Kim, Hye Sun Park, Mi Ok Kim, Mina Kim, Ji Young Yun, Eun Hee Kim, Sang Ah Lee, Seung Hun Lee, Eun Hee Koh, Joong Yeol Park, Ki Up Lee
Korean Diabetes J. 2009;33(3):198-205.   Published online June 1, 2009
DOI: https://doi.org/10.4093/kdj.2009.33.3.198
  • 2,096 View
  • 22 Download
  • 2 Crossref
AbstractAbstract PDF
BACKGROUND
Accumulating evidence has suggested that nitric oxide (NO) is involved in the regulation of insulin sensitivity in skeletal muscle. Recent studies also suggested NO as an important molecule regulating mitochondrial biogenesis. This study examined the effect of the NO donor, 3-morpholinosydnonimine (SIN-1), on glucose metabolism in skeletal muscle and tested the hypothesis that NO's effect on glucose metabolism is mediated by its effect on mitochondrial function. METHODS: In Sprague-Dawley (SD) rats treated with SIN-1 for 4 weeks, insulin sensitivity was measured by a glucose clamp study. Triglyceride content and fatty acid oxidation were measured in the skeletal muscle. In addition, mitochondrial DNA content and mRNA expression of mitochondrial biogenesis markers were assessed by real-time polymerase chain reaction and expression of insulin receptor substrate (IRS)-1 and Akt were examined by Western blot analysis in skeletal muscle. In C2C12 cells, insulin sensitivity was measured by 2-deoxyglucose uptake and Western blot analysis was used to examine the expression of IRS-1 and Akt. RESULTS: SIN-1 improved insulin sensitivity in C2C12 cells and skeletal muscles of SD rats. In addition, SIN-1 decreased triglyceride content and increased fatty acid oxidation in skeletal muscle. Mitochondrial DNA contents and biogenesis in the skeletal muscle were increased by SIN-1 treatment. Moreover, SIN-1 increased the expression of phosphor-IRS-1 and phosphor-Akt in the skeletal muscle and muscle cells. CONCLUSION: Our results suggest that NO mediates glucose uptake in skeletal muscle both in vitro and in vivo by improving mitochondrial function and stimulating insulin signaling pathways.

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Anti-GAD Antibody in Patients with Adult-Onset Diabetes in Korea.
Sang Ah Lee, Eui Young Kim, Eun Hee Kim, Ji Yun Jeong, Eun Heui Jeong, Dong Woo Kim, Eun Hee Cho, Eun Hee Koh, Min Seon Kim, Joong Yeol Park, Ki Up Lee
Korean Diabetes J. 2009;33(1):16-23.   Published online February 1, 2009
DOI: https://doi.org/10.4093/kdj.2009.33.1.16
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AbstractAbstract PDF
BACKGROUND
It is well known that the clinical characteristics of diabetes mellitus in Korean people are different from those of Western people. The purpose of this study was to investigate the prevalence of the anti-GAD antibody (GADA) in a large number of Korean patients with adult-onset diabetes. METHODS: The GADA was measured by radioimmunoassay for 11,472 adult-onset diabetic patients who visited the Asan Medical Center from 1998 to 2007. According to the fasting C-peptide levels, we classified the patients into an insulin dependent diabetes mellitus group (IDDM; C-peptide < 0.6 ng/mL) and non-insulin dependent diabetes mellitus group (NIDDM; C-peptide > or = 1.0 ng/mL). Other clinical and laboratory data were obtained from medical records. RESULTS: Among the 11,147 diabetic patients, 9,250 patients were classified as NIDDM, 922 patients were classified as IDDM and 975 patients excluded. Within the latter group 472 patients were to absolute insulin deficient (C-peptide < 0.1 ng/mL). The prevalence of GADA was 22.0% in the IDDM group and 4.7% in the NIDDM group. GADA was more prevalent in younger-onset NIDDM patients (25~40 years of age; 12.4%) than in older-onset NIDDM patients (> or = 40 years of age; 3.8%). The GADA-positive NIDDM patients had lower C-peptide and BMI levels, and higher rates of typical diabetic symptoms and insulin treatment. CONCLUSION: The prevalence of GADA in Korean patients with IDDM and NIDDM was lower than that reported in Western populations. It is thus suggested that autoimmunity is a rarer cause of diabetes in Korean people. However, since over 10% of younger-onset NIDDM patients were positive for GADA, routine GADA measurement in such patients is recommended.

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