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

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Examining glucose transport in single vascular smooth muscle cells with a fluorescent glucose analog.

Changes in vascular smooth muscle glucose transport are thought to contribute to the pathogenesis of vascular disease in conditions such as diabetes, yet no single-cell assay for glucose uptake by VSM exists. Therefore, we examined the uptake of the fluorescent glucose analog 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino]-2-deoxyglucose (2-NBDG) in isolated pig vascular smooth muscle cells (VSMC) using digital imaging microscopy. Uptake of 2-NBDG by VSMC was inhibited by D-glucose but not by L-glucose, suggesting that 2-NBDG enters VSMC via glucose transporters. Uptake of 2-NBDG was linear in the presence of 10 mM D-glucose (n=6, R2=0.9408) but not in its absence (n=4, R2=0.9993), indicating that 2-NBDG is not metabolized and accumulates within the cells. 2-NBDG fluorescence in VSMC was often non-uniform and appeared to represent binding of 2-NBDG to some cytoplasmic component. The present study demonstrates that 2-NBDG is a useful tool for examining vascular smooth muscle glucose uptake at the single cell level.[1]

References

  1. Examining glucose transport in single vascular smooth muscle cells with a fluorescent glucose analog. Lloyd, P.G., Hardin, C.D., Sturek, M. Physiological research / Academia Scientiarum Bohemoslovaca. (1999) [Pubmed]
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