Chemotactic cytokine receptor 5 (CCR5) gene promoter polymorphism (59029A/G) is associated with diabetic nephropathy in Japanese patients with type 2 diabetes: a 10-year longitudinal study.
We previously showed that polymorphisms of the promoter area of chemokine receptor 5 (CCR5) gene (59029G/A) and its agonist, regulated upon activation, normal T-cell expressed and secreted (RANTES) gene (-28C/G) were new candidates for susceptibility to diabetic nephropathy. The aim of this study was to confirm the effect of these polymorphisms on the development and progression of diabetic nephropathy. We performed a 10-year retrospective study of 191 Japanese type 2 diabetic patients with normoalbuminuria at baseline. The subjects were classified into two groups: (1) those with persistent normoalbuminuria (group N) and (2) those with progression from normoalbuminuria to microalbuminuria or overt proteinuria (group P). Then, their association with CCR5 59029G/A and RANTES -28C/G polymorphisms was assessed. The frequency of the RANTES -28G(+) genotype did nor differ between the two groups, but the CCR5 59029A(+) genotype had a significantly higher frequency in group P than in group N (83% versus 71%, p=0.04). By discriminant analysis, only the CCR5 59029A(+) genotype showed an independent positive correlation with the onset or progression of nephropathy (p=0.03, odds ratio=2.41, 95% CI=1.09-5.33). Therefore, the CCR5 59029A(+) genotype seems to be related the etiology of diabetic nephropathy in Japanese type 2 diabetics.
Mokubo
Atsuko
A
Department of Internal Medicine, Tokyo Saiseikai Central Hospital, 1-4-17 Mita, Minato-ku, Tokyo 108-0073, Japan.
Tanaka
Yasushi
Y
Nakajima
Kunihiro
K
Watada
Hirotaka
H
Hirose
Takahisa
T
Kawasumi
Masahiko
M
Sakai
Ken
K
Kanazawa
Akio
A
Maeda
Shiro
S
Hosokawa
Kazuhiro
K
Atsumi
Yoshihito
Y
Matsuoka
Kenpei
K
Kawamori
Ryuzo
R
D000368:Aged; D044466:Asian People / Q000235:genetics; D018946:Chemokine CCL5 / Q000235:genetics; D003924:Diabetes Mellitus, Type 2 / Q000235:genetics*; D003928:Diabetic Nephropathies / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics; D006801:Humans; D007564:Japan; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011401:Promoter Regions, Genetic / Q000235:genetics*; D019713:Receptors, CCR5 / Q000235:genetics*; D012189:Retrospective Studies
D018946:Chemokine CCL5; D019713:Receptors, CCR5