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Human genetic vulnerabilities may underlie infectious diseases, scientist argues

Date:
February 21, 2010
Source:
Rockefeller University
Summary:
Infectious diseases in the general population depend to a large extent on underlying genetic vulnerabilities, an expert in innate immunity says. While microbes are required for infection, he says, one's genetic background could make the difference between fighting an infection and succumbing to it.

Rockefeller University's Jean Laurent Casanova spoke on the connection between genetics and infectious diseases at the 2010 annual conference of the American Association for the Advancement of Science (AAAS) on Friday, February 19, focusing on current findings and putting them in context in this small but emerging field.

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The talk, titled "Inborn Errors of Innate Immunity in Humans," was presented at AAAS's symposium on innate immunity at 1:50 p.m. in Room 5A at the San Diego Convention Center.

Drawing from his most recent work on invasive pneumococcal disease and herpes simplex encephalitis, Casanova presented evidence that infectious diseases in the general population depend to a large extent on underlying genetic vulnerabilities. While microbes are required for infection, he says, one's genetic background could make the difference between fighting an infection and succumbing to it.

"Individual patients lacking one or another molecular component of innate immunity are highly vulnerable to a narrow range of microbes," says Casanova. "We try to describe individual mutations and specific components in innate immunity that either confer resistance or susceptibility to a specific microbe or genus."

The idea that infectious diseases may develop because of genetic vulnerabilities has encountered some resistance in the field of microbiology, which asserts that infectious diseases are strictly environmental, and among immunologists, who are uncomfortable with the possibility that certain immunological molecules merely target a narrow range of microbes.

"Our goal is to put these conflicting theories into a unified conceptual framework for exploring the molecular genetic basis of infectious diseases in humans," says Casanova. "It will lead to a more informed and precise approach to treating infections."


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The above story is based on materials provided by Rockefeller University. Note: Materials may be edited for content and length.


Cite This Page:

Rockefeller University. "Human genetic vulnerabilities may underlie infectious diseases, scientist argues." ScienceDaily. ScienceDaily, 21 February 2010. <www.sciencedaily.com/releases/2010/02/100219204419.htm>.
Rockefeller University. (2010, February 21). Human genetic vulnerabilities may underlie infectious diseases, scientist argues. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2010/02/100219204419.htm
Rockefeller University. "Human genetic vulnerabilities may underlie infectious diseases, scientist argues." ScienceDaily. www.sciencedaily.com/releases/2010/02/100219204419.htm (accessed December 20, 2014).

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