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Virus Responsible For Congenital Birth Defects Found

by Hannah Joy on April 5, 2017 at 6:23 PM
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 Virus Responsible For Congenital Birth Defects Found

Cytomegalovirus (CMV) is responsible for more than 1000 birth defects in the UK every year. The virus just invades the immune system and weakens the body.

A study led by Cardiff University has revealed these findings which could help in the development of treatment strategies for this as well as other currently untreatable viruses.

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By studying infected cells grown in a laboratory, the team found that a large number of CMV's genes help it hide from the immune system by allowing it to destroy many of the proteins produced by the body during virus infection and preventing them from activating immune cells to destroy the virus.

Dr Ceri Fielding from Cardiff University's School of Medicine said: "The scale of the effect of CMV's genes on the immune system surprised us. The number of immune activating proteins destroyed by these virus genes was unprecedented given any previous discoveries of virus immune evasion strategies.
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"In addition to providing new information that could help develop novel treatments or a cure for this virus, the findings can also tell us more about how our immune system recognizes virus infections beyond CMV."

Congenital CMV is one of the leading causes of hearing loss in children and one of the main causes of childhood disability. It is the most complex human virus and causes lifelong infection. Most healthy adults and children who become infected will have no signs or symptoms and no long term effects. It can however pose serious risks to unborn babies if a pregnant woman catches it for the first time and is a major problem for people with impaired immune systems.

The results of the study were obtained by infecting laboratory-grown cells with forms of the CMV virus which differed only by the removal of a single gene. The cells were then compared to those infected with the standard CMV virus to see how they differed in their activation of immune cells. This was done by identifying amounts of thousands of individual proteins on the surface of the cell.



Source: Eurekalert
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