Abstract：
:We determined by PCR the number of (A-C)n repeats in the 2. 1 kb upstream of the aldose reductase (AR2) gene in healthy control subjects and in patients with NIDDM in Japanese. Sixty-one patients were recruited based on the severity of retinopathy and subdivided into two groups with proliferative retinopathy and without retinopathy. Japanese exhibited 10 different alleles in this region. The most prevalent allele was designated Z ((A-C)24 repeats) allele. The Z-4 allele was significantly associated with patients with proliferative retinopathy, whereas the Z+2 allele was significantly associated with patients without retinopathy. Erythrocyte AR2 protein levels were significantly elevated in patients exhibiting the Z-4 allele compared to those exhibiting other alleles. When Z-4 allele was ligated in transfection experiments to luciferase vector containing the promoter region of the AR2 gene, the construct showed significantly higher transcription of the reporter gene compared to constructs without (A-C) repeat or with Z-2, Z or Z+2 alleles. Our results suggest that the Z-4 allele in the 2. 1 kb upstream of the AR2 gene may enhance gene transcription and may be a genetic risk factor, which determines the predisposition to retinopathy in Japanese patients with NIDDM.
journal_name
Life Scijournal_title
Life sciencesauthors
Ikegishi Y,Tawata M,Aida K,Onaya Tdoi
10.1016/s0024-3205(99)00329-xsubject
Has Abstractpub_date
1999-01-01 00:00:00pages
2061-70issue
20eissn
0024-3205issn
1879-0631pii
S002432059900329Xjournal_volume
65pub_type
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