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Genetic make-up of children explains how they fight malaria infection
Date:9/11/2012

This release is available in French.

Researchers from Sainte-Justine University Hospital Center and University of Montreal have identified several novel genes that make some children more efficient than others in the way their immune system responds to malaria infection. This world-first in integrative efforts to track down genes predisposing to specific immune responses to malaria and ultimately to identify the most suitable targets for vaccines or treatments was published in the Proceedings of the National Academy of Sciences by lead author Dr. Youssef Idaghdour and senior author Pr. Philip Awadalla, whose laboratory has been performing world-wide malaria research for the past 13 years.

"Malaria is a major health problem world-wide, with over 3 billion individuals at risk and hundreds of thousands of deaths annually, a majority of which are African children under the age of 5. Why are some children prone to infection, while others are resistant and efficiently fight the disease? These are the questions we sought to answer with our study", Idaghdour says.

However, to succeed where many other studies have failed, the team used an approach different from the classic in vitro one, where the genome is analyzed using cells grown in a laboratory. Instead, they used an in vivo approach, analyzing blood samples of children from the Republic of Benin, West Africa, collected with the help of collaborators in the city of Cotonou and the nearby village of Zinvi. "This approach allowed us to identify how the "environment" engages in an arms race to define the clinical course of the disease, in this case the environment being the number of parasites detected in the child's blood running against the genetic make-up of the infected child", Idaghdour explains.

"We used an innovative combination of technologies that assessed both genetic variation a
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Contact: William Raillant-Clark
w.raillant-clark@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

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