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Latest Virulence Stories

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2009-01-19 16:16:07

Scientists at The University of Nottingham are leading a major European study to unravel the genetic code of one of the most lethal strains of hospital acquired infections. The 3 million euro, three-year study will use gene knock-out technology developed in Nottingham to study the function of genes in a "Ëœsuper' strain of the bacteria Clostridium difficile to discover why it causes more severe disease, kills more people, is harder to eradicate and more resistant to antibiotics. It...

2008-12-12 10:25:36

Infectious pathogens like Salmonella typhimurium employ a startling array of techniques to skillfully outwit the body's defense mechanisms and produce illness. Through their expression of genes"”the fundamental building blocks of cellular physiology"”such microbes ingeniously adapt to varied environments, modifying their disease-causing potential or virulence.Although the study of a broad range of microbial virulence factors is now well advanced, many pieces of the puzzle are...

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2008-10-10 13:34:11

Scientists from the Universities of Bath and Exeter have developed a rapid new way of checking for toxic genes in disease-causing bacteria which infect insects and humans. Their findings could in the future lead to new vaccines and anti-bacterial drugs. They studied a bacterium called Photorhabdus asymbiotica, which normally infects and kills insects, but which can also cause an unpleasant infection in humans. By testing groups of genes from the bacteria against three types of invertebrates...

2008-07-18 06:00:22

Research and Markets (http://www.researchandmarkets.com/research/8cb5a3/evolution_in_healt) has announced the addition of the "Evolution in Health and Disease" report to their offering. A fully revised edition of a volume written by the worlds leading authorities on this subject. It discusses how the evolution of humans and their pathogens have generated important medical issues, covering both infectious and degenerative diseases. It presents important ideas that are not yet sufficiently...

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2008-07-16 10:48:09

Disease-causing microbes like the food-borne bacterium Listeria monocytogenes specialize in invading and replicating inside their animal hosts' own cells, making them particularly tricky to defeat. Now, a new study led by biologists at the University of California, Berkeley, has identified a molecular alarm system in which the intracellular pathogen sends out signals that kick the immune response into gear. The findings, to be reported the week of July 14 in the journal Proceedings of the...

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2008-06-13 13:55:00

Salmonella is serving up a surprise not only for tomato lovers around the country but also for scientists who study the rod-shaped bacterium that causes misery for millions of people.In research published June 4 in the online journal PloS One, researchers say they've identified a molecular trick that may explain part of the bacteria's fierceness. A team from the University of Rochester Medical Center has identified a protein that allows the bacteria to maintain a low profile in the body,...

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2008-05-14 09:05:00

It's a paradox that has confounded evolutionary biologists since Charles Darwin published On the Origin of Species in 1859: Since parasites depend on their hosts for survival, why do they harm them?A new University of Georgia and Emory University study of monarch butterflies and the microscopic parasites that hitch a ride on them finds that the parasites strike a middle ground between the benefits gained by reproducing rapidly and the costs to their hosts. The study, published in the early...

2008-04-16 15:04:10

Salmonella are wily and obnoxious bacterial invaders--escape artists capable of evading multiple immune responses and causing a harsh and debilitating intestinal infection.Researchers have come closer to understanding how these bacteria manage to thwart two major categories of immune defenses at once and set up shop in a host organism. New results are reported in the April 2008 issue of the journal Cell Host & Microbe.The Emory University research team used a transgenic fruit fly...

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2008-03-10 15:45:00

Experimental payload aboard space shuttle Endeavor to continue studies on the ability of germs to cause diseaseWhen space shuttle Endeavor blasts off on March 11, some tiny "Ëœastronauts' will piggyback onboard an experimental payload from Arizona State University's Biodesign Institute. The new experiment, called "Microbial Drug Resistance Virulence" is part of the STS-123 space shuttle Endeavor mission. It will continue the research studies of Cheryl Nickerson, PhD, project leader...

2005-08-30 14:47:03

A team of biomedical researchers from Brandeis University and the University of Texas at Austin has determined the first 3-dimensional structure of an enzyme that may be pivotal in preventing certain bacterial infections in plants, animals and humans, according to a study published in the Proceedings of the National Academy of Sciences. The enzyme had already been shown in previous studies to significantly decrease soft rot in potato plants. The Brandeis and University of Texas team purified...


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
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'