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Fujita, H. et al.

Fujita, Narita, Meguro, Ishii, Hanyu, Suzuki, Ito,

Lack of association between the heparan sulfate proteoglycan gene polymorphism and diabetic nephropathy in Japanese NIDDM with proliferative diabetic retinopathy.

The development of diabetic nephropathy shows remarkable variation among individuals. Therefore, not only hyperglycemia but also genetic factors may contribute to the development of diabetic nephropathy Heparan sulfate proteoglycan ( HSPG) is thought to play an important role as a component of the charge selectivity barrier in the glomerular basement membrane. Recently, a BamHI restriction fragment length polymorphism (RFLP) in the HSPG gene (HSPG2) was reported to be associated with diabetic nephropathy in Caucasian insulin-dependent diabetes mellitus (IDDM). The aim of the present study was to examine the contribution of the BamHI HSPG2 polymorphism to the development of diabetic nephropathy in Japanese non-insulin-dependent diabetes mellitus (NIDDM). For this purpose, we recruited 102 patients with diabetic nephropathy and 64 age-matched patients without diabetic nephropathy from Japanese NIDDM patients. Since all the subjects had proliferative diabetic retinopathy, it seems likely that they would be exposed to hyperglycemia for a long time. In the present study, the BamHI HSPG2 genotype and allele frequencies were not significantly different between the patients with nephropathy and the patients without nephropathy. Therefore, we conclude that the BamHI HSPG2 polymorphism is not associated with the development of diabetic nephropathy in Japanese NIDDM.[1]

References

Lack of association between the heparan sulfate proteoglycan gene polymorphism and diabetic nephropathy in Japanese NIDDM with proliferative diabetic retinopathy. Fujita, H., Narita, T., Meguro, H., Ishii, T., Hanyu, O., Suzuki, K., Ito, S. Renal failure. (1999) [Pubmed]

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