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    New way to prevent spread of infections on medical devices

    Written by supriya kashyap kashyap Published On 2017-03-22T09:57:40+05:30  |  Updated On 22 March 2017 9:57 AM IST
    New way to prevent spread of infections on medical devices

    London : Researchers have discovered a new way to prevent bacteria from growing on medical devices such as hip replacements or heart valves implanted in the human body.


    The discovery by microbiologists at Trinity College Dublin in Ireland is a step towards developing new preventive strategies that could have a direct impact on the recovery of patients in the immediate aftermath of a surgical operation.


    Medical devices are routinely used in modern medicine to prevent and treat illness and disease but their use is compromised when an accumulation of bacteria called "biofilms" attach to the device surface after it is implanted in the human body.


    Communities of these bacteria called "staphylococci" growing on catheters, heart valves and artificial joints avoid being killed by antibiotics and the human immune system, meaning that the removal and replacement of the medical device is usually necessary.


    Researchers led by Joan Geoghegan, Assistant Professor at Trinitys School of Genetics and Microbiology, are studying new ways to prevent medical device-related infection.


    They said that it is possible to prevent communities of staphylococci from forming by targeting the linkages that hold the bacteria together.


    According to Leanne Hays, PhD student in Trinitys Department of Microbiology, it is possible to stop bacteria from attaching to surfaces and to each other using a small blocking molecule.


    The target of the molecule was a protein attached to the surface of the bacteria called SdrC.


    In laboratory experiments the blocking molecule prevented the SdrC protein from recognising other bacteria and stopped the staphylococci from growing as bio film communities.


    "These new findings show that it is possible to stop bacteria from building communities using molecules that specifically target proteins attached to the surface of the bacteria," Geoghegan said.


    "This exciting breakthrough will inform the design of new, targeted approaches to prevent biofilm formation by staphylococci and reduce the incidence of medical device-related infection," said Geoghegan.


    The research was published in the journal Proceedings of the National Academy of Sciences.

    Leanne Haysmedical deviceTrinity College DublinTrinitys Department of Microbiology
    Source : PTI

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    supriya kashyap kashyap
    supriya kashyap kashyap
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