Journal List > Korean Diabetes J > v.32(1) > 1002230

Lee, Jang, Kim, Kim, Lee, Choi, Lim, Park, Park, and Kim: Association between Apolipoprotein E Polymorphism and Type 2 Diabetes in Subjects Aged 65 or Over

Abstract

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.

Figures and Tables

Table 1
Apo E isoform frequency and allele frequency in normal subjects and diabetic subjects
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Table 2
Clinical and metabolic characteristics of subjects according to apo E isoformsClinical and metabolic characteristics of subjects according to apo E isoforms
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Values are the mean ± SD. *P < 0.05 versus e3/e3 isoform. HDL-cholesterol, high density lipoprotein-cholesterol; LDL-cholesterol, low density lipoprotein cholesterol.

Table 3
Comparison of clinical and metabolic charateristics between subjects with normal glucose tolerance and with diabetes
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HDL-cholesterol, high density lipoprotein-cholesterol; LDL-cholesterol, low density lipoprotein cholesterol.

Table 4
Clinical and metabolic characteristics of subjects according to apo E isoforms in diabetes group
kdj-32-30-i004

Values are the mean ± SD. *P < 0.05 versus e3/e3 isoform. HDL-cholesterol, high density lipoprotein-cholesterol; LDL-cholesterol, low density lipoprotein cholesterol.

Table 5
Logistical regression analysis examining the association between apo E isoforms, alleles and the presence of diabetes in aged people
kdj-32-30-i005

CI, Confidence Interval. e3 allele and e3/e3 isoform were used as control, respectively. Data were adjusted for age and sex.

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