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Nanoparticles to Spot Diseased Neoplastic Cells

by Julia Samuel on March 11, 2015 at 3:07 PM

Nanoparticles to Spot Diseased Neoplastic Cells
One of the features that is extensively studied for diagnostic purpose is that, neoplastic cells and other diseased tissues often consume less oxygen than healthy cells.

Researchers from the University of Copenhagen and Oxford University have engineered an injectible compound that glows in different colors depending on the amount of intracellular oxygen.
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The material consists of europium, which glows red, and terbium lanthanide emits a green glow. Europium's light emission is not affected by the presence of oxygen, but at lower oxygen levels terbium's green color gets brighter.

Though nanoparticles have been designed in a similar pattern, one could never tell whether the colour change is due to an abnormal level of oxygen or simply too many of the particles concentrating in one area.
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Focusing on the colour of the emitted light rather than its intensity by the new rare earth nanoparticles solves the problem of distinguishing the emission. The investigators believe that the technology will be tested in human subjects as they have progressed quite a bit in the laboratory already.

Source: Medindia
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