Diabetes & Metabolism Journal

Original Articles

Matrix Metalloproteinase-3 Gene Polymorphism is Associated with Coronary Artery Calcification Scores in Patients with Type 2 Diabetes Mellitus.: Sang Wook Kim, Eun Hee Cho; Korean Diabetes J. 2009;33(2):113-123. Published online April 1, 2009; DOI: https://doi.org/10.4093/kdj.2009.33.2.113

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Matrix metalloproteinase-3 (MMP-3) is expressed in human coronary atherosclerotic lesions and is known to be involved in the degradation of plaque. This study examines the association of MMP-3 gene promoter 5A/6A and -709A>G polymorphisms with coronary artery calcium scores in type 2 diabetes patients. METHODS: The study comprises 140 type 2 diabetes patients aged 34~85 years, who showed no evidence of clinical cardiovascular disease before recruitment. Recruitment was based on patient's coronary artery calcium (CAC) scores and polymorphisms were identified. RESULTS: Multiple regression analysis showed that the CAC scores were significantly associated with age (P = 0.008), waist circumference (P = 0.03), duration of diabetes (P = 0.003) and the serum creatinine level (P = 0.012). MMP-3 5A/6A and -709A>G polymorphisms were not associated with CAC across all subjects. However, in the subgroup with a duration of diabetes over 10 years, MMP-3 -709A>G were significantly associated with CAC (P = 0.037) adjusted for age, body mass index, waist circumference and duration of diabetes. CONCLUSION: Our data suggest that the CAC scores in patients with type 2 diabetes were related with age, waist circumference, duration of diabetes and higher serum creatinine levels. MMP-3 polymorphisms with -709A>G are associated with high CAC in patients with a duration of diabetes over 10 years.

The Association of Interleukin-6 Gene Promoter Region Polymorphism G174C with Insulin Resistance and Metabolic Syndrome in Korean Women.: Eun Jung Rhee, Won Young Lee, Se Yeon Kim, Eun Sook Oh, Ki Hyun Baek, Ki Won Oh, Moo Il Kang, Sun Woo Kim; Korean Diabetes J. 2005;29(3):181-188. Published online May 1, 2005

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Abstract PDF: BACKGROUND
Interleukin(IL)-6 is a cytokine that is produced from immune cells and adipose tissue. It is thought to be a factor to explain the link between insulin resistance and inflammation, and it is also thought to be involved in glucose metabolism and lipid metabolism. We observed the frequency of the G174C polymorphism in the IL-6 gene promoter region in Korean women and we investigated the association of fasting glucose, insulin resistance indices and metabolic syndrome. METHODS: Measurements of the blood pressure, body fat, fasting glucose, insulin, lipid profiles and anthropometric measurements were done for 268 Korean women(mean age 51.4yrs, range 37~73yrs). Homeostasis model assessement(HOMA) and the quantitative insulin sensitivity check index(QUICKI) were calculated and the presence of metabolic syndrome was assessed according to ATP III criteria. Genotyping was done with the PCRRFLP method on the blood samples of the participants. RESULTS: The allele frequencies were 0.965 for the G allele and 0.035 for the C allele, and they were in Hardy-Weinberg equilibrium(P=0.50). The fasting insulin level and HOMA were significantly higher and the QUICKI was significantly lower in the C allele carriers compared with non-carriers. Although the prevalence of metabolic syndrome was not significantly different according to the different genotypes, among the individual components, the prevalence of hypertriglyceridemia was significantly higher in the C allele carriers compared with the non-carriers. There were no differences in the prevalence of normoglycemia, fasting hyperglycemia and provisional diabetes according to the different genotypes. CONCLUSION: The G174C polymorphism in The IL-6 promoter region was not frequently observed in Korean women. The insulin resistance indices were higher in the C allele carriers compared with the non-carriers. Although the prevalence of metabolic syndrome was not associated with the polymorphism, the prevalence of hypertriglyceridemia was higher in The C allele carriers, suggesting that it is possibile for candidate gene of insulin resistance

Apolipoprotein E Genetic Polymorphism and Diabetic Microangiopathy in Type 2 Diabetic Patients.: Jong Suk Park, Joo Young Nam, Chul Sik Kim, Dol Mi Kim, Min Ho Cho, Jina Park, Chul Woo Ahn, Bong Soo Cha, Sung Kil Lim, Kyung Rae Kim, Hyun Chul Lee; Korean Diabetes J. 2004;28(6):511-520. Published online December 1, 2004

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Abstract PDF: BACKGROUND
The pathophysiological causes for the development and progression of diabetic microangiopathy are not well known, but the apo E genetic polymorphism has been proposed to be involved in the disease's development and progression. The aim of this study was to investigate the association between the apo E genetic polymorphism and diabetic microangiopathy in Korean type 2 diabetic patients. METHODS: One hundred eighteen patients with type 2 diabetes who had a duration of diabetes longer than 8 years were divided into the three apo E groups (the E2, E3 and E4 groups). The plasma levels of lipids were measured. The frequency of diabetic nephropathy, retinopathy and neuropathy were compared among the three apo E genotype groups. RESULTS: The frequency of overt nephropathy was significantly greater for the apo E2 patients with diabetes (46.7%) than for the apo E3 (16.7%) or apo E4 patients (10.5%). Logistical regression analysis showed that the odds ratio of the apo E2 and apo E4 genotypes for the presence of overt nephropathy were 4.779 (P < 0.01) and 0.643 (P = 0.583), respectively. Plasma TG levels were significantly greater for the apo E2 patients. This study did not find any association between diabetic retinopathy, neuropathy and apo E polymorphism. CONCLUSION: Apo E2 is a positive risk factor for diabetic nephropathy in Korean type 2 diabetic patients. TG may have an important role in diabetic nephropathy.

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