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Latest Quorum sensing Stories

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2010-07-02 08:21:39

The discovery of how bacteria communicate may lead to new types of antibiotics and ways of improving actions of good bacteria Bonnie Bassler spends her days listening to bacteria talk to one another, and what she has overheard may surprise you. It turns out that these tiny, single-celled organisms are taking roll call. Each whispered conversation is an attempt to count how many of their own kind are present before they try to mount an attack on their host organism, which might very well be...

2010-05-21 05:00:00

SAN DIEGO, May 21 /PRNewswire-FirstCall/ -- Sorrento Therapeutics, Inc. (OTC Bulletin Board: SRNE) today announced that it has received an Advanced Technology Small Business Technology Transfer Research (STTR) grant from the National Institute of Allergy and Infectious Diseases. The peer-reviewed grant was awarded to support the Company's program to generate and develop novel antibody therapeutics and vaccines to combat Staphylococcus aureus (S. aureus or "Staph") infections, including...

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2010-05-12 12:38:56

Scientists are reporting success in a first attempt to silence the biochemical conversations that disease-causing bacteria use to marshal their forces and cause infections. In a study in ACS' monthly journal, Biomacromolecules, they describe use of specially designed plastic-like materials to soak up the substances that bacteria produce and pass to one another as messages. Elena Piletska and colleagues point out that more and more disease-causing bacteria are developing resistance to the...

2010-01-27 07:04:00

Clark School's Nanofactories Could Be Next Big Step in Antimicrobial Treatment COLLEGE PARK, Md., Jan. 27 /PRNewswire-USNewswire/ -- New research at the A. James Clark School of Engineering could prevent bacterial infections using tiny biochemical machines--nanofactories--that can confuse bacteria and stop them from spreading, without the use of antibiotics. A paper about the research is featured in the current issue of Nature Nanotechnology. "Engineered biological nanofactories...

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2010-01-21 09:25:00

Researchers at UC San Diego who last year genetically engineered bacteria to keep track of time by turning on and off fluorescent proteins within their cells have taken another step toward the construction of a programmable genetic sensor. The scientists recently synchronized these bacterial "genetic clocks" to blink in unison and engineered the bacterial genes to alter their blinking rates when environmental conditions change. Their latest achievement, detailed in a paper published in the...

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2009-12-03 14:47:19

Drug-resistant hospital bacteria could be inactivated at their outset Most scientists believe that staph infections are caused by many bacterial cells that signal each other to emit toxins. The signaling process is called quorum sensing because many bacteria must be present to start the process. But the Jeff Brinker research group has determined that the very first stage of staph infection, when bacteria switch from a harmless to a virulent form, occurs in a single cell and that this...

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2009-11-02 06:53:43

Researchers from the University of Copenhagen and the Technical University of Denmark along with other collaborators in Denmark and the US found that the bacterium Pseudomonas aeruginosa can 'switch on' production of molecules that kill white blood cells "“ preventing the bacteria being eliminated by the body's immune system. P. aeruginosa is responsible for many hospital-acquired infections and also causes chronic infections in those with pre-existing medical conditions such as cystic...

2009-07-30 13:26:45

Certainly there is strength in numbers, but only if those numbers can effectively communicate with one another. Now, a new study finds that administration of a novel small molecule which effectively disrupts a key bacterial communication process protects an animal host from infection. The research, published by Cell Press in the July 31st issue of the journal Molecular Cell, may lead to more effective treatments for bacterial infection that won't encourage growth of treatment resistant...

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2009-07-10 10:20:00

Infections of wounds, pneumonia, etc. in hospitals in particular are often caused by bacteria called Pseudomonas aeruginosa. Once they reach a certain density, colonies of Pseudomonas aeruginosa produce virulence factors and can enter into a slimy state, a biofilm, which prevents antibiotics from penetrating. The process of quorum sensing, which cells use to "sense" cell density, is triggered when the concentration of certain signaling compounds generated by the bacteria reaches a threshold...

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...


Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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