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Babies born to mothers exposed to pollen in the last trimester are more likely to develop respiratory diseases such as asthma, says a study. The results showed that people born during the grass pollen season had high levels of immunoglobulin E (IgE) in the umbilical cord blood – a marker used to predict the development of allergic diseases.
"We know that outdoor exposure to pollen during the first few months after birth can lead to allergic respiratory diseases and we suspect that exposure during the later stages of pregnancy could also be important," he said. said Bircan Erbas, associate professor at La Trobe University. in Melbourne, Australia. "Many studies have shown that babies with high levels of IgE in the cord blood can develop allergies later in childhood, but little is known about how these levels are affected by exposure to pollen in utero. "
However, the study published in Environment International has also shown that pregnancy throughout the grass pollen season can have a protective effect on babies. "We found that these babies had lower IgE levels. This was a significant finding and indicates the possible development of an awareness barrier, "said Erbas.
Erbas pointed out that the study did not indicate that all babies born during a high pollen season would develop respiratory disease or other allergies. "The study provides new information that could help us predict and manage diseases such as asthma, which pose a significant burden to public health. However, it is important to remember that there are a number of factors that can determine asthma or allergies. It's a puzzle piece, "she explained.
For the study, the team analyzed cord blood collected from hundreds of babies born in Melbourne, Denmark and Germany.
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First published: Sept. 16, 2018 11:27 IST
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