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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Elements of diabetic nephropathy in a patient with GLUT 2 deficiency.

The Fanconi-Bickel syndrome is caused by homozygosity or compound heterozygosity for mutations of the facilitated glucose transporter 2 gene (GLUT2). Glycogen accumulates in renal tubular cells and they fail to reabsorb multiple filtered solutes because of impairment in GLUT2-mediated efflux of glucose. We describe a 10-year-old male child with GLUT2 deficiency who produced massive amounts of 3-deoxyfructose (3-DF) in the kidneys. Since 3-DF is a detoxification product of a potent glycating agent, 3-deoxyglucosone, a precursor of advanced glycation end-products, this suggests a massive accumulation of glucose within tubular cells probably as a consequence of GLUT2 deficiency. The level of 3-DF in the urine of this atypical patient, who also manifested renal glomerular hyperfiltration, microalbuminuria, and glomerular mesangial expansion, was higher than in any patient examined with diabetes mellitus. Elevated levels of glucose and/or its metabolites in renal tubular cells may be necessary but not sufficient for the development of both the renal tubulopathy and diabetic-like glomerular disease in GLUT2 deficiency.[1]

References

  1. Elements of diabetic nephropathy in a patient with GLUT 2 deficiency. Berry, G.T., Baynes, J.W., Wells-Knecht, K.J., Szwergold, B.S., Santer, R. Mol. Genet. Metab. (2005) [Pubmed]
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