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Journal of the American Society of Nephrology, Vol 5, S29-S36, Copyright © 1994 by American Society of Nephrology

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Gene expression of epithelial glucose transporters: the role of diabetes mellitus

JH Dominguez, B Song, L Maianu, WT Garvey and M Qulali
Department of Medicine and Physiology, Indiana University Medical Center, Indianapolis.

The functions of absorption of dietary glucose by the small intestine and reabsorption of filtered glucose by the renal proximal tubule are strikingly similar in their organization and in the way they adapt to uncontrolled diabetes mellitus. In both cases, transepithelial glucose and Na+ fluxes are augmented. The epithelial adaptations to hyperglycemia of uncontrolled diabetes are accomplished by increasing the glucose transport surface area and the number of the efflux glucose transporter GLUT2 located in the basolateral membrane. The signals that modify the size of the epithelium and the overexpression of basolateral GLUT2 are not known. It was speculated that high glucose levels and enhanced Na+ flux may be important factors in the signaling event that culminates in a renal and intestinal epithelium that is modified to transport higher rates of glucose against a higher extracellular level of glucose.


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W. Y. Lee, P. Loflin, C. J. Clancey, H. Peng, and J. E. Lever
Cyclic Nucleotide Regulation of Na+/Glucose Cotransporter (SGLT1) mRNA Stability. INTERACTION OF A NUCLEOCYTOPLASMIC PROTEIN WITH A REGULATORY DOMAIN IN THE 3'-UNTRANSLATED REGION CRITICAL FOR STABILIZATION
J. Biol. Chem., October 20, 2000; 275(43): 33998 - 34008.
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