Korean Diabetes Journal 2004;28(6):511-520.
Published online December 1, 2004.
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
Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
Abstract
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.
Key Words: Apolipoprotein E genetic polymorphism, Type 2 diabetes, Diabetic microangiopathy


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