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Latest Virulence Stories

2009-10-13 10:23:54

A special protein in the lining of the stomach has been shown to be an important part of the body's defense against the stomach ulcer bacterium Helicobacter pylori in a new study from the Sahlgrenska Academy. The discovery may explain why the bacterium makes some people more ill than others. The study was conducted in collaboration with researchers at universities in Brisbane and Melbourne and has been published in the scientific journal Public Library of Science Pathogens. "Half of all...

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2009-09-25 08:58:54

Genetic regions have been identified that are unique to the most virulent strain of Clostridium difficile (C. difficile), the hospital superbug. Researchers writing in BioMed Central's open access journal Genome Biology studied the genome of the bacterium, looking for genes relating to motility, antibiotic resistance and toxicity. Brendan Wren from the London School of Hygiene & Tropical Medicine worked with a team of researchers at The Wellcome Trust Sanger Institute to compare the...

2009-09-10 14:28:37

Bean plants' natural defences against bacterial infections could be unwittingly driving the evolution of more highly pathogenic bacteria, according to new research published today in Current Biology. The study sheds new light on how bacterial pathogens evolve and adapt to stresses from host plants. This information could help researchers develop new ways of tackling pathogens that cause extensive and costly damage to beans and other food crops. The scientists from Imperial College London and...

2009-07-07 12:12:16

 The Rosetta Stone of bacterial communication may have been found.Although they have no sensory organs, bacteria can get a good idea about what's going on in their neighborhood and communicate with each other, mainly by secreting and taking in chemicals from their surrounding environment. Even though there are millions of different kinds of bacteria with their own ways of sensing the world around them, Duke University bioengineers believe they have found a principle common to all of...

2009-05-28 10:59:00

That's one conclusion from a new study that looked at how virulence evolves in parasites. The research examined whether parasites evolve to be more or less aggressive depending on whether they are closely connected to their hosts or scattered among more isolated clusters of hosts.The research was led by Geoff Wild, an NSERC-funded mathematician at the University of Western Ontario, with colleagues from the University of Edinburgh. Their paper will be published on Nature's Web site on May...

2009-05-20 13:50:36

Researchers at the Helmholtz Center demonstrate how bacteria measure temperature and thereby control infection Researchers in the "Molecular Infection Biology group" at the Helmholtz Centre for Infection Research (HZI) in Braunschweig and the Braunschweig Technical University could now demonstrate for the first time that bacteria of the Yersinia genus possess a unique protein thermometer "“ the protein RovA - which assists them in the infection process. RovA is a multi-functional...

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2009-05-19 09:34:48

For the first time UK scientists have shown what the food poisoning bug Salmonella feeds on to survive as it causes infection: glucose. Their discovery of Salmonella's weakness for sugar could provide a new way to vaccinate against it. The discovery could also lead to vaccine strains to protect against other disease-causing bacteria, including superbugs. "This is the first time that anyone has identified the nutrients that sustain Salmonella while it is infecting a host's body," says Dr...

2009-05-11 09:18:03

Scientists in the USA have discovered why smokers may be more prone to chronic gum disease (periodontitis). One of the bacteria responsible for this infection responds to cigarette smoke "“ changing its properties and the way it infects a smokers mouth. The study published recently in the Society for Applied Microbiology journal Environmental Microbiology, showed that the bacterium Porphyromonas gingivalis adapts and changes its DNA and membrane proteins in response to cigarette smoke....

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2009-05-07 06:55:00

Salmonella, what's gotten into you? Researchers have been asking themselves this question ever since Salmonella bacteria grown on board the space shuttle returned to Earth 3 to 7 times more virulent than Salmonella grown on the ground under otherwise identical conditions. Figuring out why could help safeguard astronauts from disease and lead to new treatments for food poisoning and other common ailments on Earth. New research by Cheryl Nickerson (Arizona State University) and colleagues...

2009-03-23 08:56:00

Complimentary Continuing Education Virtual Lecture for Healthcare Professionals VOORHEES, N.J., March 23 /PRNewswire/ -- The epidemiology of Clostridium difficile infection (CDI) is changing rapidly and has been marked by a significant increase in incidence and severity. Management of CDI can be challenging and guidelines for treatment and prevention are being updated. In order to effectively implement key strategies for reducing the incidence and severity of this virulent pathogen, it is...


Latest Virulence Reference Libraries

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2011-04-14 13:29:59

Acinetobacter baumannii is a species of pathogenic bacteria that is resistant to most antibiotics. Some think the disease is killing tens of thousands of U.S. hospital patients each year due to its resistance to drug treatment. It can cause severe pneumonia and infections of the urinary tract, bloodstream, and other parts of the body. It forms opportunistic infections including reports of attacking wounded soldiers and is sometimes abbreviated as MDRAB. It is the most relevant human...

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Word of the Day
out-herod
  • In the phrase to out-herod Herod, to be more violent than Herod (as represented in the old mystery plays); hence, to exceed in any excess of evil.
Herod refers to 'Herod the Great,' a Roman client king and 'a madman who murdered his own family and a great many rabbis.' According to the OED, the term is 'chiefly with allusion to Shakespeare's use' in Hamlet.
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