Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gene that controls susceptibility to tuberculosis discovered

13.05.2003


Investigators at the Research Institute of the McGill University Health Centre (MUHC) have identified a gene that regulates the susceptibility to tuberculosis. This finding is published in this week’s edition of the Proceedings of the National Academy of Sciences.

Tuberculosis, an infectious disease caused by the bacteria Mycobacterium tuberculosis, affects approximately 1.9 billion people worldwide. However, a large proportion of these individuals do not develop tuberculosis symptoms. Their body defense systems, or immune systems, are capable of controlling the growth of the bacteria.

"We have identified a gene that controls Mycobacterium tuberculosis growth in the lung," says MUHC microbiologist and senior author Dr. Philippe Gros. "This is an important step toward understanding why some infected individuals are able to fight off the infection and others are not. This discovery may lead to innovative prevention and treatment strategies for the 2 million patients who die from tuberculosis yearly."



Gros, also a professor of Biochemistry and Medicine at McGill University, along with his graduate student, Loukia Mitsosand, and his colleagues from the University of Oxford and the Trudeau Institute in Saranac Lake NY, used a mouse model and a technique called genome scanning to find the gene. They infected mice with air-borne bacteria and compared the DNA of those who were susceptible to infection with those who were not. A common gene variant on chromosome 19 was identified in those mice that were susceptible to infection. These mice had greater number of bacteria in their lungs and died earlier. "We believe that the gene variant, Trl-4, controls the growth of the bacteria in the lung. The next step is to test if this gene is present in humans who are susceptible to the disease," concludes Gros.


This study, funded by the National Institutes of Health, is available online at http://www.pnas.org.

For more information, please contact:
Christine Zeindler, MSc
Communications Coordinator (Research)
McGill University Health Centre Communications Services
514-934-1934 ext. 36419
pager: 514-406-1577


Christine Zeindler | EurekAlert!
Further information:
http://www.mcgill.ca/
http://www.pnas.org

More articles from Life Sciences:

nachricht Researchers identify potentially druggable mutant p53 proteins that promote cancer growth
09.12.2016 | Cold Spring Harbor Laboratory

nachricht Plant-based substance boosts eyelash growth
09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>