Navigation Links
Tuberculosis genomes portray secrets of pathogen's success
Date:8/21/2013

MADISON, Wis. By any measure, tuberculosis (TB) is a wildly successful pathogen. It infects as many as two billion people in every corner of the world, with a new infection of a human host estimated to occur every second.

Now, thanks to a new analysis of dozens of tuberculosis genomes gathered from around the world, scientists are getting a more detailed picture of why TB is so prevalent and how it evolves to resist countermeasures. Writing today (Aug. 21, 2013) in the journal Public Library of Science (PLoS) Pathogens, a team led by University of Wisconsin-Madison researcher Caitlin Pepperell describes a bacterium that marches in lockstep with human population growth and history, evolving to take advantage of the most crowded and wretched human conditions.

"It's as though the bacterium places bets on human behavior," says Pepperell, formerly of Stanford University, and now a professor of medicine and medical microbiology at UW-Madison. "It always bets that humans will go to war, send people to refugee camps, and gather in miserable places. Historically, that's been a winning bet on the bacterium's part."

The PLoS Pathogens study, whose senior author is Marcus Feldman of Stanford, reveals that tuberculosis experienced a 25-fold expansion worldwide in the 17th century, a time when human populations underwent explosive growth and European exploration of Africa, the Americas, Asia and Oceania was at its peak.

"The timing is coincident with expansion, urbanization and colonial migrations of global human populations," Pepperell explains. "These findings suggest that much of the current TB pandemic has its origins in historical events of the last three centuries."

TB is only transmitted by people, and the organism cannot survive in the environment. It thrives, however, in the crowded conditions of prisons, refugee camps and slums, and TB populations tend to be dominated by the bacteria "lucky" enough to
'/>"/>

Contact: Caitlin Pepperell
cspepper@medicine.wisc.edu
608-262-5983
University of Wisconsin-Madison
Source:Eurekalert

Page: 1 2

Related biology news :

1. Biosignatures distinguish between tuberculosis and sarcoidosis
2. Targeting tuberculosis hotspots could have widespread benefit
3. MIT-designed cooler preserves tuberculosis drugs, records doses
4. Research on improvements in diagnosing and treating tuberculosis
5. Millions of diabetics could die of tuberculosis
6. New approach of resistant tuberculosis
7. Iowa State, Ames Lab researchers study the structure of drug resistance in tuberculosis
8. High doses of Vitamin D help tuberculosis patients recover more quickly
9. Scientists reveal how natural antibiotic kills tuberculosis bacterium
10. Notre Dame research could provide new insights into tuberculosis and other diseases
11. Missing link discovered in the defence mechanism of the tuberculosis pathogen
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/16/2014)... tract infections and worldwide claims the lives of ... Ghent University have succeeded in developing a promising ... , Xavier Saelens (VIB/UGent): "We discovered a ... the development of a novel approach to vaccination ... numerous small children and elderly people." , ...
(Date:10/15/2014)... ,Models of Life, is a non-traditional biophysics textbook and ... book is a journey of discovery into biological systems ... and biological regulation. It is about how our genes ... between the billions of cells in an organism. It ... between principles, which can be found on both large ...
(Date:10/15/2014)... will be awarded the 44th Rosenstiel Award for Distinguished ... pioneering research exploring the mechanisms of genomic instability and ... Alt is the second alumnus to win the Rosenstiel ... in 2003. , Alt is the Charles A. Janeway ... Medical School and an investigator at the Howard Hughes ...
Breaking Biology News(10 mins):New perspectives for development of an RSV vaccine 2New book about life as seen from physics 2Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2
... a medical doctor. Yet he is seen as a hero ... D.H. was diagnosed with terminal lung cancer. , "In 2000 ... few months to live," said Pardini, a professor of biochemistry ... the University of Nevada, Reno. "But five years later, ...
... for treating Parkinson's diseases and other neurodegenerative disorders is getting ... brain is a complex organ with many different types of ... barrier erected by blood vessels and glial cells -- the ... of most drugs from the bloodstream. , But now scientists ...
... of history students have discovered the antler of an Irish Elk ... , Although the exact age of the antler has yet to ... (Megaloceros giganteus) lived around 11,000 years ago. The giant deer roamed ... the end of the last Ice Age, as the glaciers retreated ...
Cached Biology News:The nude mouse tale: Omega-3 fats save the life of a terminal cancer patient 2Engineered Stem Cells Show Promise For Sneaking Drugs Into The Brain 2Engineered Stem Cells Show Promise For Sneaking Drugs Into The Brain 3Students discover 11,000 year old remains of Irish Elk 2
(Date:10/22/2014)... DUBLIN , Oct. 22, 2014 ... addition of the "Global DNA Diagnostics Market ... - Size, Share, Global Trends, Company Profiles, Demand, ... 2013 - 2020" report to their offering. ... diagnostics Market (products, applications, techniques, end users and ...
(Date:10/22/2014)... The North American crystal oscillator market report defines and ... forecast of revenue. This market was valued at $531.4 ... million by 2018, at a CAGR of 3.3% from ... the North American crystal oscillator market report, to get ... provides a glimpse of the segmentation of the market, ...
(Date:10/22/2014)... (PRWEB) October 22, 2014 WriteResult, ... services – has been working with a team of ... New Haven Farms Community Farming Collaborative to provide electronic ... solution. The study, which started in May, aims ... that provides participants weekly exposure to and participation in ...
(Date:10/22/2014)... Physicians Choice Laboratory Services (PCLS) ... which enables healthcare providers to individualize therapeutic treatments ... results, healthcare providers are better able to assess ... minimizing risks for adverse drug reactions and interactions. ... FDA [1] more than 2.2 million adverse drug ...
Breaking Biology Technology:Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 2Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 2The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 4myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 3
... ... of Bavituximab,s Mechanism of Action in ... - Results Further Support Future Clinical Trials Testing Bavituximab in ... Combination With Radiation Therapy -, TUSTIN, Calif., Sept. 4 Peregrine,Pharmaceuticals, Inc. (Nasdaq: ...
... Sept. 4 Alexion,Pharmaceuticals, Inc. (Nasdaq: ALXN ) ... Alexion Pharmaceuticals, will present at the,Bear Stearns 20th Annual ... on Tuesday, September 11, 2007. An audio webcast ... can,access the webcast at: http://www.alexionpharm.com . An archived ...
... To Maintain Roles as Vice Chairman of The Foundry and Advisor ... ... Labs, MENLO PARK, Calif., Sept. 4 Morgenthaler ... and information technology investments, today announced the,addition of Hank Plain as ...
Cached Biology Technology:Study Published in Clinical Cancer Research Confirms Potential Of Peregrine's Bavituximab Combined With Radiation In Lung Cancer 2Study Published in Clinical Cancer Research Confirms Potential Of Peregrine's Bavituximab Combined With Radiation In Lung Cancer 3Study Published in Clinical Cancer Research Confirms Potential Of Peregrine's Bavituximab Combined With Radiation In Lung Cancer 4Study Published in Clinical Cancer Research Confirms Potential Of Peregrine's Bavituximab Combined With Radiation In Lung Cancer 5Hank Plain Joins Morgenthaler Ventures as Partner 2Hank Plain Joins Morgenthaler Ventures as Partner 3
rat Leptin...
...
... with the xPONENT Software Interface is ... assays using Upstate's Beadlyte® reagents. This ... friendly xPONENT software developed by Luminex. ... for commercial or home-made multiplex kits. ...
... L samples, featuring 24-position turntable. Provides up to 30 minutes of walkaway time. Automatic ... and record keeping. RS-232 port. ... ... ...
Biology Products: