Abstract
Objective: To study the association between apolipoprotein E (apoE) genotype and the rate of decline in glomerular filtration rate (GFR) in type 2 diabetic patients in a 9-year prospective study.Methods: GFR was determined in 84 type 2 diabetic patients by plasma clearance of51Cr-EDTA at baseline and after 9 years of follow-up. ApoE genotypes were determined by polymerase chain reaction and restriction enzymeHhal digestion and designated as ε4 allele group (apoE4/2, 4/3 and 4/4 genotypes; n = 20) and non-ε4 allele group (apoE3/3 and E3/2 genotypes; n=64). We focused our analysis on those patients who were more likely to progress to diabetic renal disease, i.e. whose GFR fell more than expected in the normal course of ageing [1 ml × min−1 × (1.73 m2)−1 per year.Results: In the whole population, the decline in the GFR did not differ statistically significantly between the apoE genotype groups [p=0.65 with analysis of variance for repeated variables (RANOVA) for interaction between apoE genotype group and time point]. However, among patients whose GFR changed more than 9 ml × min−1 × (1.73 m2)−1, GFR showed a statistically significantly greater decline in the ε4 allele group (n=11) than in the non-ε4 allele group (n=43) [from 116±36 to 80±29 ml × min−1 × (1.73 m2)−1 vs. from 119±20 to 96±18 ml × min−1 × (1.73 m2)−1; p=0.005 with RANOVA].Conclusion: ApoE allele ε4 may speed up the rate of decline of the GFR in patients with progressive diabetic renal disease.
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Lehtinen, S., Rantalaiho, V., Wirta, O. et al. Apolipoprotein E gene polymorphism, hypercholesterolemia and glomerular filtration rate in type 2 diabetic subjects: A 9-year follow-up study. J Biomed Sci 10, 260–265 (2003). https://doi.org/10.1007/BF02256061
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DOI: https://doi.org/10.1007/BF02256061