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:4/17/2014)... hundred births, Down syndrome - or trisomy 21 - ... It results from a chromosomal abnormality where cells of ... (1% of the human genome). A study conducted by ... Genetic Medicine and Development at the University of Geneva ... shed light on how the extra chromosome 21 upsets ...
(Date:4/17/2014)... Clemson professor Rajendra Singh Thursday as a "Champion ... expand solar deployment in the residential, commercial and ... Professor of Electrical and Computer Engineering and director ... a local hero leading the charge across the ... solar power and driving policy changes at the ...
(Date:4/17/2014)... such as heart disease, epilepsy and pain, making them ... is still much scientists do not know about the ... into the structure of sodium channels and, specifically, one ... responsible for ,fine-tuning, the activity of the channel. The ... the Journal of Biological Chemistry . , Nerves ...
Breaking Biology News(10 mins):Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3White House honors Clemson professor as 'Champion of Change' for solar deployment 2Structure of sodium channels different than previously believed 2
... AWRE ), a leading supplier of broadband technology and biometrics ... 30, 2010.   Revenues for the third quarter of ... million in the same quarter last year. Net income for the ... These results compared to a net loss of $1.1 million, or ...
... BOSTON The discovery that a protein called Rictor plays ... AKT oncogene could provide scientists with a new molecular target ... September 2010 issue of the journal Molecular Cell , ... Medical Center (BIDMC). The oncogenic cousin, known as ...
... Nanomedicine Center for Nucleoprotein Machines has received an award ... its renewal by the National Institutes of Health (NIH). ... of a clinically viable gene correction technology for single-gene ... disease. Sickle cell disease is a genetic condition ...
Cached Biology News:Aware, Inc. Reports Third Quarter 2010 Financial Results 2Aware, Inc. Reports Third Quarter 2010 Financial Results 3Aware, Inc. Reports Third Quarter 2010 Financial Results 4Aware, Inc. Reports Third Quarter 2010 Financial Results 5Rictor protein offers scientists a new molecular target for cancer therapies 2NIH renews Nanomedicine Center focused on treating single-gene disorders for $16.1 million 2NIH renews Nanomedicine Center focused on treating single-gene disorders for $16.1 million 3NIH renews Nanomedicine Center focused on treating single-gene disorders for $16.1 million 4
(Date:1/14/2014)... EquitiesIQ, a leading informational research provider, has ... an emerging biomedical company acquiring, developing, manufacturing, and marketing ... Free report download: http://equitiesiq.com/reports/alliqua/ , In late ... and Board, which launched the company’s new strategy to ...
(Date:1/14/2014)... iLab Solutions, the leader in core facility ... of Product Strategy. In this role, Michelle will work with ... guide in the development of iLab products. Her main goal ... benefit to the scientific community by offering the most advanced, ...
(Date:1/14/2014)... January 14, 2014 Global Record ... innovative information technology solutions for patients, physicians, the ... stakeholders, announced today the signing of a three-year ... and Drug Administration (FDA). This initiative is ...
(Date:1/14/2014)... January 14, 2014 Kerr Corporation, a leading ... and additional how-to information about dual arch impressions on its ... Dual Arch Impressions,” the blog entry serves up a list ... houses a step-by-step demonstration by Dr. David Little as he ...
Breaking Biology Technology:EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2
... 2011 GeoVax Labs, Inc. (OTCQB/OTCBB: GOVX), ... HIV/AIDS vaccines, announced today the opening of a third ... vaccine.  The Los Angeles-based AIDS Research Alliance (ARA) will ... site team: the AIDS Research Consortium of Atlanta and ...
... to detect the levels of vitamin B12 using your breath, ... help to avoid the potentially fatal symptoms of B12 deficiency. ... in IOP Publishing,s Journal of Breath Research , researchers ... accurately measure vitamin B12. Vitamin B12 deficiency is ...
... 2011 Veredus Laboratories, a leading provider of molecular ... STM ), today announced the successful development and ... to detect 10 to 12 food-borne pathogens in one ... (E. coli) responsible for the recent severe food poisoning ...
Cached Biology Technology:GeoVax Initiates Third Site For Therapeutic Testing of Its HIV Vaccine 2GeoVax Initiates Third Site For Therapeutic Testing of Its HIV Vaccine 3GeoVax Initiates Third Site For Therapeutic Testing of Its HIV Vaccine 4A breath of fresh air for detecting vitamin B12 deficiency 2Veredus Laboratories Develops Lab-on-Chip Solution to Detect and Differentiate Several Food-Borne Pathogens, Including Escherichia coli (E. coli) 2Veredus Laboratories Develops Lab-on-Chip Solution to Detect and Differentiate Several Food-Borne Pathogens, Including Escherichia coli (E. coli) 3Veredus Laboratories Develops Lab-on-Chip Solution to Detect and Differentiate Several Food-Borne Pathogens, Including Escherichia coli (E. coli) 4
... A direct, simple approach to ... well surface of an EIA ... maintains its integrity and availability ... dry, room temperature conditions ...
AC input: 230 V...
... lyophilization stabilizer is designed to stabilize ... for long-term storage. There are ... It is a convenient 10 ... and is superior to other traditional ...
... Freedom EVO Clinical is Tecans open platform ... enhance quality, safety and performance in the ... is provided by flexible barcode reading and ... mention that the system complies with the ...
Biology Products: