LONDON, Sept 10:
Viral infections in newborns ‘cripple’ the immune system and increase the risk of asthma later in life, a new study led by Indian-origin scientists has found.
Studies on mice showed infections by respiratory syncytial virus (RSV) stripped immune cells of their ability to calm down inflammation in the lung’s airways.
US researchers behind the study hope their findings will help develop ways of preventing asthma, the ‘BBC News’ reported.
Previous studies have shown a link between repeated lung infections with respiratory syncytial virus (RSV) and developing asthma later in life.
However, how the virus might lead to an increased risk of asthma has remained unknown.
Now a team of researchers at the University of Pittsburgh School of Medicine believe they have an explanation.
Their experiments on mice showed the virus impaired the ability of a specific part of the immune system, called regulatory T cells, to calm inflammation.
The tightened airway of an asthma patient and a healthy airway
Inflammation is an important part of dealing with an infection. However, for asthma patients, chemicals in air which come from ordinary things like dust mites, pets and mould can trigger an inappropriate inflammatory response. (PTI)
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