- 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.
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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
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Korean Diabetes J. 2009;33(1):48-57. Published online February 1, 2009
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DOI: https://doi.org/10.4093/kdj.2009.33.1.48
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- 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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Citations
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Hyun Hee Chung, Kyu Chang Won
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Alireza Didarloo, Davoud Shojaeizadeh, Hassan Eftekhar Ardebili, Shamsaddin Niknami, Ebrahim Hajizadeh, Mohammad Alizadeh
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Kyung Sun Hyun, Kwang Mi Kim, Sook Hee Jang
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Ie Byung Park, Sei Hyun Baik
Korean Diabetes Journal.2009; 33(5): 357. CrossRef
- Prevalence of the Metabolic Syndrome in Type 2 Diabetic Patients.
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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
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Korean Diabetes J. 2009;33(1):40-47. Published online February 1, 2009
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DOI: https://doi.org/10.4093/kdj.2009.33.1.40
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Abstract
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- 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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Citations
Citations to this article as recorded by - A Novel Clinical Predictor of Metabolic Syndrome: Vascular Risk Age
Abdulrahman Naser, Didar Elif Akgün, Rengin Çetin Güvenç, Samet Sayılan, Özgen Şafak
Bagcilar Medical Bulletin.2023; 9(1): 1. CrossRef - Risk of Carotid Atherosclerosis in Subjects with Prediabetes Overlapping Metabolic Syndrome
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
Dong Eun Kim, Seung Hee Hong, Ji-Myung Kim
Korean Journal of Community Nutrition.2015; 20(5): 351. CrossRef - The Comparison between Periodontal Health Status and the Findings of Hypertension and Diabetes Disease of some Workers
In-Young Ku, Seon-Jeong Moon, Kyung-Hwan Ka, Myeong-Seon Lee
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Hyung-Su Park, Jin-Gyu Jeong, Jin-Ho Yu
The Journal of the Korea institute of electronic communication sciences.2013; 8(5): 779. CrossRef - Associations of serum fetuin-A levels with insulin resistance and vascular complications in patients with type 2 diabetes
Chan-Hee Jung, Bo-Yeon Kim, Chul-Hee Kim, Sung-Koo Kang, Sang-Hee Jung, Ji-Oh Mok
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Sa Rah Lee, Ying Han, Ja Won Kim, Ja Young Park, Ji Min Kim, Sunghwan Suh, Mi-Kyoung Park, Hye-Jeong Lee, Duk Kyu Kim
Diabetes & Metabolism Journal.2012; 36(5): 357. CrossRef - Comorbidity Study on Type 2 Diabetes Mellitus Using Data Mining
Hye Soon Kim, A Mi Shin, Mi Kyung Kim, Yoon Nyun Kim
The Korean Journal of Internal Medicine.2012; 27(2): 197. CrossRef - Therapeutic Target Achievement in Type 2 Diabetic Patients after Hyperglycemia, Hypertension, Dyslipidemia Management
Ah Young Kang, Su Kyung Park, So Young Park, Hye Jeong Lee, Ying Han, Sa Ra Lee, Sung Hwan Suh, Duk Kyu Kim, Mi Kyoung Park
Diabetes & Metabolism Journal.2011; 35(3): 264. CrossRef - The Correlations between Extremity Circumferences with Total and Regional Amounts of Skeletal Muscle and Muscle Strength in Obese Women with Type 2 Diabetes
Hwi Ryun Kwon, Kyung Ah Han, Hee Jung Ahn, Jae Hyuk Lee, Gang Seo Park, Kyung Wan Min
Diabetes & Metabolism Journal.2011; 35(4): 374. CrossRef
- Association of the Polymorphisms in the PSMA6 (rs1048990) and PSMB5 (rs2230087) Genes with Type 2 Diabetes in Korean Subjects.
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Hee Kyoung Kim, Su Won Kim, Yun Jeong Doh, Sae Rom Kim, Mi Kyung Kim, Keun Gyu Park, Hye Soon Kim, Kyong Soo Park, Min Yoo, Jung Guk Kim, Bo Wan Kim, In Kyu Lee
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Korean Diabetes J. 2008;32(3):204-214. Published online June 1, 2008
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DOI: https://doi.org/10.4093/kdj.2008.32.3.204
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Abstract
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- BACKGROUND
The 26S ubiquitin-proteasome system (UPS) is a principal proteolytic pathway of intracellular molecules regulating apoptosis, cell cycle, cell proliferation or differentiation, inflammation and etc. The recent study suggests that the rs1048990 (C/G) polymorphism of the proteasome subunit alpha type 6 (PSMA6) gene is associated with the increase of the risk of myocardial infarction by the dysregulation of IkappaB degradation. We hypothesized that 26S UPS is important in the development of insulin resistance and type 2 diabetes (T2DM) by controlling the degradation of IkappaB and insulin receptor substances as a substrate. We therefore investigated whether the rs1048990 (C/G) polymorphism of PSMA6 gene and the rs2230087 (G/A) polymorphism of proteasome subunit beta type 5 gene (PSMB5), that is chymotrypsin-like protease determining the rate of proteolysis, are associated with susceptibility to T2DM in Korean subjects. METHODS: We examined the polymorphisms of these genes in 309 diabetic subjects and 170 non-diabetic controls. The polymorphisms of rs1048990 (C/G) and rs2230087 (G/A) were genotyped by real-time PCR. RESULTS: The frequency of the G allele of rs1048990 (C/G) and the A allele of rs2230087 (G/A) polymorphisms was significantly higher in diabetic patients (28% and 13%) compared to that in controls (13% and 1%; P = 0.000 and P = 0.000, respectively). Logistic regression analysis of the rs1048990 (C/G) polymorphism showed that the odds ratio (OR) (adjusted for age, smoking, waist circumference, fasting plasma glucose, systolic blood pressure, HDL-C, triglyceride, and total cholesterol) was 3.93 (95% confidence interval [CI], 2.35-6.59; P = 0.000) for the G allele and 5.09 (95% CI, 2.71-9.57; P = 0.000) for CG and GG genotype when compared with the CC genotype. Logistic regression analysis of the rs2230087 (G/A) polymorphism showed that the adjusted OR was 5.70 (95% CI, 1.63-19.98; P = 0.007) for the A allele and 6.08 (95% CI, 1.66-22.29; P = 0.006) for GA and AA genotype when compared with the GG genotype. In multiple logistic regression analysis with T2DM as the independent Variable rs1048990 (C/G) and rs2230087 (G/A) polymorphisms were the predictor for T2DM. CONCLUSION: We suggest that the G allele of rs1048990 (C/G) polymorphism and the A allele of rs2230087 (G/A) polymorphism may be genetic risk factor to type 2 diabetes mellitus in Korean subjects.
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Citations
Citations to this article as recorded by - Ubiquitin-proteasome system in diabetic retinopathy
Zane Svikle, Beate Peterfelde, Nikolajs Sjakste, Kristine Baumane, Rasa Verkauskiene, Chi-Juei Jeng, Jelizaveta Sokolovska
PeerJ.2022; 10: e13715. CrossRef - 1,4‐Dihydropyridine derivatives without Ca2+‐antagonist activity up‐regulate Psma6 mRNA expression in kidneys of intact and diabetic rats
Kristīne Ošiņa, Evita Rostoka, Jelizaveta Sokolovska, Natalia Paramonova, Egils Bisenieks, Gunars Duburs, Nikolajs Sjakste, Tatjana Sjakste
Cell Biochemistry and Function.2016; 34(1): 3. CrossRef - Genetic variations in the PSMA3, PSMA6 and PSMC6 genes are associated with type 1 diabetes in Latvians and with expression level of number of UPS-related and T1DM-susceptible genes in HapMap individuals
Tatjana Sjakste, Natalia Paramonova, Kristine Osina, Kristine Dokane, Jelizaveta Sokolovska, Nikolajs Sjakste
Molecular Genetics and Genomics.2016; 291(2): 891. CrossRef
- The Effect of Chronic High Glucose Concentration on Endoplasmic Reticulum Stress in INS-1 Cells.
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Mi Kyung Kim, Hye Young Seo, Tae Sung Yun, Nam Kyung Kim, Yu Jin Hah, Yun Jung Kim, Ho Chan Cho, Young Yun Jang, Hye Soon Kim, Seong Yeol Ryu, In Kyu Lee, Keun Gyu Park
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Korean Diabetes J. 2008;32(2):112-120. Published online April 1, 2008
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DOI: https://doi.org/10.4093/kdj.2008.32.2.112
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Abstract
PDF
- BACKGROUND
The highly developed endoplasmic reticulum (ER) structure is one of the characteristic features of pancreatic beta-cells. Recent study showed that ER stress causes beta-cell dysfunction. However, little is known about the effects of high glucose concentration on induction of ER stress in pancreatic beta-cells. Therefore, this study was designed to evaluate whether exposure of high glucose concentration in rat insulinoma cell line, INS-1 cell induces ER stress and whether ER stress decreases insulin gene expression. METHODS: The effect of 30 mM glucose on insulin expression and secretion in INS-1 cells was evaluated by Northern blot analysis and glucose-stimulated insulin secretion (GSIS). Cell viability was evaluated by XTT assay. The effect of 30 mM glucose on phosphorylation of eIF2alpha and CHOP expression, which are markers of ER stress were evaluated by Western blot analysis. RT-PCR analysis was performed to determine whether high glucose concentration induces XBP-1 splicing. To investigate whether ER stress decreases insulin gene expression, the effect of tunicamycin on insulin mRNA expression was evaluated by Northern blot analysis. RESULTS: The prolonged exposure of INS-1 cells with the 30 mM glucose concentration decreased insulin mRNA expression in a time dependent manner and impaired GSIS while did not influence on cell viability. 30 mM glucose increased phosphorylation of eIF2alpha, XBP-1 splicing and CHOP expression in INS-1 cells. Tunicamycin-treated INS-1 increased XBP-1 splicing and decreased insulin mRNA expression in a dose dependent manner. CONCLUSION: This study showed that prolonged exposure of INS-1 with high glucose concentration induces ER stress and ER stress decreases insulin gene expression. Further studies about underlying molecular mechanism by which ER stress induces beta-cell dysfunction are needed.
- A Case of Cured Diabetes Mellitus after Occult Malignant Pheochromocytoma Removal.
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Ho Chan Cho, Hye Soon Kim, Yoon Jung Kim, Yu Jin Hah, Nam Keong Kim, Mi Kyung Kim, Keun Gyu Park, Yong Hoon Kim, Sun Young Kwon
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Korean Diabetes J. 2007;31(6):520-524. Published online November 1, 2007
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DOI: https://doi.org/10.4093/jkda.2007.31.6.520
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2,698
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- Pheochromocytoma is characterized by a combination of various clinical manifestations that include the classic triad of severe headache, palpitations and diaphoresis. In addition, hyperglycemia can be caused by overproduction of catecholamines, which are secreted by a catecholamine-secreting neoplasm of adrenal or extra-adrenal chromaffin tissue. We encountered a case of diabetes with an occult malignant adrenal pheochromocytoma, who did not have any classic manifestations. A 37-year-old male was admitted because of polydipsia, polyuria, and weight loss. Fasting blood glucose level was 497 mg/dL, hemoglobin A1c level was 15%, and diabetic retinopathy and peripheral polyneuropathy were also accompanied. Incidentally, right adrenal mass was detected by ultrasonography of abdomen. Urinary excretion of total metanephrine and epinephrine were elevated. Adrenal CT showed a 7.1 cm sized right adrenal cystic mass with enhancing solid portion and hemorrhagic content. The scan with 123I-MIBG revealed the cystic mass with increased rim uptake in the region of right adrenal gland. After removal of the tumor, the increased levels of catecholamine were normalized. Moreover, blood glucose level was normalized without administration of insulin or oral hypoglycemic agents. The pathologic examination showed that the neoplasm was a malignant adrenal pheochromocytoma. We report this case that diabetes was cured after removal of malignant tumor with literature review at first in Korea.
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Citations
Citations to this article as recorded by - Pheochromocytoma with Markedly Abnormal Liver Function Tests and Severe Leukocytosis
Chai Ryoung Eun, Jae Hee Ahn, Ji A Seo, Nan Hee Kim
Endocrinology and Metabolism.2014; 29(1): 83. CrossRef
- The Effect of Alpha-lipoic Acid on the Cell Cycle Arrest and Apoptosis in Rat Vascular Smooth Muscle Cells.
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Hye Jin Kim, In Kyu Lee, Young Ho Kim, Soon Young Shin, Young Han Lee, Jung Guk Kim, Bo Wan Kim, Hye Soon Kim, Mi Kyoung Kim, Keun Gyu Park, Seong Yeol Ryu
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Korean Diabetes J. 2007;31(3):200-207. Published online May 1, 2007
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DOI: https://doi.org/10.4093/jkda.2007.31.3.200
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Abstract
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- BACKGROUND
The proliferation of vascular smooth muscle cells (VSMCs) is a hallmark of atheroscelrosis and post-angioplasty restenosis. We previously showed that alpha-lipoic acid (ALA) inhibited neointimal hyperplasia and has potential anti-atherosclerosis effect in rat carotid artery balloon injured model. Here, we investigated whether alpha-lipoic acid inhibited proliferation of cells and induced apoptosis in rat vascular smooth muscle cells. METHODS: VSMCs were treated with ALA under each condition, harvested and protein was extracted. Same amount of protein was loaded into SDS-PAGE and western blot analysis was performed with various cell cycle regulation protein. To examine ALA induce apoptosis in VSMCs, FACS and DNA fragmentation assay were performed. Antioxidant effect of ALA was determined by DCF-DA staining. RESULTS: ALA induced VSMCs cell cycle arrest and induced p21, p27 and p53 proteins. Also ALA induced PTEN expression and AMPK phosphorylation. Increased AMPK phosphorylation reduced Erk-2 phosphorylation and finally arrested cell cycle promotion. The apoptotic effect was also shown by ALA treatment. Also we confirmed that ALA reduced ROS generation in VSMCs. CONCLUSION: The present data suggest that ALA has anti-proliferative effect and arrests cell proliferation. Therefore, ALA may provide new strategies for the prevention of neointimal hyperplasia after angioplasty.
- Alpha-Lipoic acid Inhibits TNF-alpha-Induced Fractalkine Expression in Rat aortic Smooth Muscle Cells.
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Keun Gyu Park, Hye Soon Kim, Seong Yeol Ryu, Chang Wook Nam, Byung Kyu Chae, Eui Dal Jung, Jung Guk Kim, Bo Wan Kim, In Kyu Lee
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Korean Diabetes J. 2005;29(5):409-417. Published online September 1, 2005
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Abstract
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- BACKGOUND: The induction of vascular inflammation via the proinflammatory cytokine/ nuclear factor (NF)-kappaB pathway is one of the key mechanisms in the development and progression of atherosclerosis. Accumulating evidence suggests a recently identified chemokine, fractalkine, is involved in arterial inflammation and atherogenesis; however, few studies have examined the effects of pharmacological agents on this process. The purposes of this study were to determine if alpha-lipoic acid (ALA) inhibits the expression of tumor necrosis factor (TNF)-alpha-stimulated fractalkine in vascular smooth muscle cells(VSMCs). METHODS: Rat VSMCs were isolated and cultured. Northern and Western blot analyses were performed to evaluate the effects of ALA on the expression of TNF-alpha-stimulated fractalkine in VSMCs. A gel shift assay was performed to examine the mechanism by which ALA inhibits the expression of fractalkine. RESULTS: TNF-alpha markedly induced the expression of fractalkine in primary cultured VSMCs. ALA inhibited the expression of TNF-alpha-stimulated fractalkine in cultured VSMCs. The result of the gel shift assay suggested the inhibitory effects of AS-6 on the expression of TNF-alpha-stimulated fractalkine were mediated via the NF-kappaB pathway. CONCLUSION: This study has shown that ALA has anti-inflammatory effects on VSMCs, which are mediated by the inhibitoin, at least in part, of the NF-kappaB dependent inflammatory signal-stimulated expression of fractalkine. Our data suggest the possibility that antioxidants, such as ALA, inhibit the NF-kappaB pathway, which may be used to prevent the development and progression of atherosclerosis.
- Ascochlorin Derivative, AS-6, Inhibits TNF-alpha-Induced fractalkine, MCP-1 and VCAM-1 Expression in Rat Aortic Smooth Muscle Cells.
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Young Yun Jang, Sang Yoon Kim, Nam Keong Kim, Mi Kyung Kim, Hee Kyoung Kim, Hye Soon Kim, Chang Wook Nam, Seong Yeol Ryu, Sung Il Nam, Keun Gyu Park
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Korean Diabetes J. 2005;29(5):401-408. Published online September 1, 2005
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- BACKGOUND: Inflammation is one of the key mechanisms in the development and progression of atherosclerosis. Accumulating evidence suggests that peroxisome proliferators- activated receptorgamma(PPARgamma) plays an important role in the prevention of arterial inflammation and the formation of atherogenesis. This study was designed to evaluate whether the new synthetic PPARgamma, ascochlorin-6(AS-6) has anti-inflammatory and anti-atherogenic effects in primary cultured rat vascular smooth muscle cells(VSMCs). METHODS: Rat VSMCs were isolated and cultured. Northern and Western blot analyses were performed to evaluate the effects of AS-6 on the expressions of tumor necrosis factor (TNF)-alpha-stimulated fractalkine, monocyte chemoattractant protein(MCP)-1 and vascular cell adhesion molecule (VCAM)-1 in VSMCs. A gel shift assay was performed to examine the mechanism by which AS-6 inhibits the expressions of fractalkine, MCP-1 and VCAM-1. RESULTS: TNF-alpha markedly induced the expressions of fractalkine, MCP-1 and VCAM-1 in primary cultured VSMCs. AS-6 inhibited the expressions of TNF-alpha-stimulated fractalkine, MCP-1 and VCAM-1 in primary cultured VSMCs. The result of the gel shift assay suggested the inhibitory effects of AS-6 on the expressions of TNF-alpha-stimulated fractalkine, MCP-1 and VCAM-1 were mediated through a nuclear factor kappaB associated pathway. CONCLUSION: The present study shows that AS-6 has anti-inflammatory effects on VSMCs, suggesting the possibility for the use of AS-6 for prevention of the development and progression of atherosclerosis.
- Comparison of the Relationship of Leptin to Metabolic Parameters Between Premenopausal Normal Weight and Obese Women.
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Hee Kyoung Kim, Keun Gyu Park, Mi Kyung Kim, Young Yun Jang, Sang Yoon Kim, Eui Dal Jung, Hye Soo Kim, Ju Ho Do, In Kyu Lee
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Korean Diabetes J. 2005;29(3):223-230. Published online May 1, 2005
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- BACKGROUND
Leptin is mainly secreted from adipose tissue, and it is a crucial factor for metabolic syndrome that is characterized by obesity, insulin resistance, hypertension and dyslipidemia. We measured the serum leptin concentrations and compared them with the body fat distribution and metabolic risk factors in premenopausal normal weight and obese women. METHODS: 231 premenopausal obese women participated in this study. The subjects were grouped based on their body mass index(BMI). The number of normal weight group women(BMI<25kg/m2) and the number of obese group women(BMI> or = 25kg/m2) were 90 and 141, respectively. We measured the plasma leptin concentration and such metabolic risk factors as fasting glucose, insulin, triglyceride(TG), systolic blood pressure(SBP) and diastolic blood pressure(DBP). The subcutaneous adipose tissue area(SAT) and the visceral adipose tissue area(VAT) were determined by computed tomography. The BMI, waist to hip ratio(WHR) and homeostasis model assessment(HOMA-IR) were calculated. RESULTS: In the obese group, the leptin levels were positively correlated with the BMI and SAT as well as with such metabolic risk factors as fasting serum glucose, insulin, HOMA-IR, TG, SBP and DBP. Although leptin levels were positively correlated with BMI and SAT in the normal weight group, they were not correlated with the metabolic risk factors. CONCLUSION: The present study showed that the leptin levels in the normal weight group were not associated with the metabolic risk factors. Therefore, the degree of obesity must be considered before leptin can be used as a predictor for metabolic syndrome including diabetes and coronary heart disease
- Taurine-Mediated Restoration of Glucose Sensitivity of Pancreatic Beta Cells in OLETF Rats.
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So Yeon Kim, Keun Gyu Park, In Kyu Lee, Seong Il Nam, Dae Kyu Song
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Korean Diabetes J. 2005;29(3):198-205. Published online May 1, 2005
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- BACKGROUND
An OLETF(Otsuka Long-Evans Tokushima Fatty) rat is a model of type 2 diabetes that is characterized by obesity-induced insulin resistance. Taurine has been known to be beneficial for type 2 diabetes. This study evaluated the potential taurine effect on the insulin response to high glucose in the islets of OLETF rats. METHODS: One percent of taurine was put in the drinking water for the taurine group of OLETF rats at the time of their being 20 to 39 weeks of age. At 40 weeks, the pancreatic islets and beta cells were obtained to measure the glucose-stimulated insulin secretion(GSIS) and the ATP-sensitive K+(KATP) channel current. RESULTS: Taurine supplementation had no effect on the weight change of the rats when this was measured weekly from 20 to 39 weeks(mean+/-SE: 702+/-19g in the control group vs. 688+/-18g in the taurine group at the 39th week). However, the GSIS was significantly potentiated in the taurine-treated rats(8.9+/-1.3% vs. 13.2+/-3.2% of the total secreted at 15 mM glucose for 1h). The glucose-induced KATP channel inhibition in the beta cells was also greater in the taurine group. CONCLUSION: Taurine supplementation is a beneficial tool for the restoration of GSIS in the pancreatic islet of the OLETF rats. Maintenance of blood taurine level may be important in treating type 2 diabetic patients, who are subject to a low blood level of taurine
- Insulin Gene Therapy Using HVJ-liposome and Epstein-Barr Virus Plasmid in Murine Streptozotocin Induced Diabetes.
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Yong Deuk Kim, Keun Gyu Park, Seong Wook Han, Jong Doek Ahn, Hyo Jung Lee, Mi Jung Kim, Hye Soon Kim, Nam Hee Park, In Kyu Lee
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Korean Diabetes J. 2003;27(5):405-413. Published online October 1, 2003
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Despite improvement in insulin preparation and delivery, the use of insulin therapy alone to maintain normal glucose concentration and prevent the development of diabetic complication is not easy. Therefore, there has been considerable interest in developing gene therapy to supply insulin. We investigated that the administration of hemagglutinating virus of Japan (HVJ)- liposome complex, containing human insulin construct into the portal vein to control the blood glucose level in murine streptozotocin (STZ)-induced diabetes. METHODS: Human insulin gene was delivered to STZ-induced diabetic rats through the portal vein using HVJ-liposome containing Epstein-Barr virus (EBV) replicon-based plasmid (pEB). Blood glucose and body weight were measured after insulin gene delivery. The animals were sacrificed 28 days later and the livers were collected for immuno-histochemical staining of insulin. In addition plasma insulin and C-peptide levels were measured. RESULTS: Significant decrease in blood glucose levels and an increase in insulin and C-peptide levels were observed in the insulin gene transfection group as compared to the control group. Immunohistochemical staining of insulin also showed significant differences between these two groups. CONCLUSION: This study demonstrated the possibility of insulin gene therapy through the portal vein using pEB and HVJ-liposome method to produce a sustained improvement of diabetic glucose metabolism.
- A Differential Effect of Intracellular ATP on Skeletal-and Smooth Muscle-Type KATP Channel Activities.
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Oh Dae Kwon, Jeong Geun Lim, Haeng Gyun Kim, Dae Kwang Kim, Jae Seok Hwang, Keun Gyu Park, Sung Hee Park, Chi Heum Cho, In Kyu Lee, Dae Kyu Song
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Korean Diabetes J. 2003;27(4):332-342. Published online August 1, 2003
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The ATP-sensitive potassium (KATP) channel comprises an inwardly- rectifying K+ channel (Kir) and a sulfonylurea receptor(SUR). This study investigated the mechanism of different ATP sensitivity between skeletal-(Kir6.2/SUR2A) and smooth muscle- (Kir6.2/SUR2B) type KATP channels. METHODS: Messenger RNAs encoding mouse Kir6.2, and rat SUR2A or 2B were co-injected into Xenopus Laevis oocytes to express each type of KATP channel. Using the inside-out patch clamp technique, the channel currents for MgATP sensitivity were measured and analyzed. RESULTS: By addition of 100 microM of MgATP, the current initially decreased and then slowly increased in Kir6.2/SUR2A. This gradual, ATP sensitivity decrease during prolonged MgATP application was totally blocked by LY 294002, a pho- sphatidylinositol-3 and -4 kinase inhibitor. In contrast, a rather rapid sensitivity decrease after initial inhibition was observed in Kir6.2/SUR2B by 100 microM of ATP, which was not blocked by LY 294002. This channel activation was Mg2+- dependent, suggesting that ATP hydrolysis is critical. CONCLUSION: This result supports the idea that the ability of MgATP to stimulate Kir6.2/SUR2B channels reflects a faster rate of ATP hydrolysis at NBD2 of SUR2B.
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KDA
