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Boulder - drug resistant bacteria are increasingly becoming a major problem for global health. Bacteria that develop resistance to antibiotics complicates treatment and is very difficult to eradicate.
Quoted in the recently researchers at the University of Colorado Boulder revealed that small particles are activated by light-known as quantum dots may be useful in fighting infection.
Quantum dots contained in a semiconductor material that is in electronic devices, but not in the size of a nano-sized 20 thousand times thinner than a human hair.
When working in such a small size, the researchers were able to stimulate specific interactions at the cellular
level that just targeting harmful bacteria.
This study is not the first time researchers have been trying to fight bacteria in the small realm like that. Earlier work showed that nano-sized particles (nanoparticles) which is made of silver and gold can be used to fight infections. But there spillovers for nano particles is also harmful to the cells around the bacteria.
Quantum dots did not experience such problems. Because activated by light, researchers can tailor particles that attack only specific cells and is done simply by varying the wavelength of the light. When the light source is removed, the quantum dots stopped active.
According to the researchers, this breakthrough enables the development of clinical care that is not dangerous to use nanoparticles to combat resistant bacteria.
This experiment started well. Researchers have been testing on tissues grown in the laboratory. It turned out this way destroy 92% of bacteria resistant.
Anushree Chatterjee, senior author of the study, said: "Antibiotics are becoming a fundamental treatment not only against bacterial infections, but also in HIV and cancer. Failure to develop an effective treatment against resistant bacteria is not an option anymore, and the technology is moving rapidly towards resolving the problem. "
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