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Tag: "bacterial" at biology news

Caterpillars tell us how bacteria cause disease

... discovered a way to sort through large numbers of bacterial gene sequences by testing them in caterpillars to ...dwide, insects provide a massive pool of hosts for bacterial diseases. The immune system of insects is very similar to the inborn immune system of mammals. By li...

Genomic comparison of lactic acid bacteria published

With public concerns at a fevered pitch over the bacterial contamination of spinach, it is easy to lose track...cation more than doubles the number of lactic acid bacterial genomes that are publicly available and provides the research community with a wealth of high-qualit...

Extraordinary life found around deep-sea gas seeps

...patches of blackened sediment and pockets of white bacterial mats. Most sites also had extensive shell beds consisting of live and dead shells of various types of clams and mussels. These were fringed with stands of another type of deep-sea tube worm that is also gutless and relies on symbiotic bacteria for i...

Biofuel cells without the bio cells

...c Northwest National Laboratory. The feat is the bacterial equivalent of removing lungs and coaxing the disembodied tissue to breathe. Squier and principal authors Yijia Xiong and Liang Shi, PNNL staff scientists, discovered that the proteins, outer membrane c-type cytochrome A, or OmcA, formed a dense coa...

Otherworldly bacteria discovered two miles down

...hers have discovered an isolated, self-sustaining, bacterial community living under extreme conditions almost two miles deep beneath the surface in a South African gold mine. It is the first microbial community demonstrated to be exclusively dependent on geologically produced sulfur and hydrogen and one of the...

Bacteria that use radiated water as food

... many scientists have been skeptical of subsurface bacterial communities being completely disconnected from sur...an University) and colleagues present evidence the bacterial communities are indeed permanent -- apparently millions of years old -- and depend not on sunlight b...

Study finds the air rich with bacteria

...d Austin. Surprisingly, they found a widely varied bacterial population that rivals the diversity found in soil...serves two purposes. It paves the way for regional bacterial censuses that will help a Department of Homeland Security bioterrorism surveillance program differen...

Gene chip technology shows potential for identifying life-threatening blood infection

..., catheters or ventilators, they are also prone to bacterial infections, including pneumonia, that can quickly spiral out of control and lead to sepsis. Although both conditions are life-threatening because of their threat to major organs, sepsis is more lethal. In the United States, about 750,000 cases occ...

Researchers map spread of pathogens in the human body

...ore effective treatments and prevention of certain bacterial infections. Dr. Pietro Mastroeni, Professor Dunc...fections within the cells. By understanding where bacterial pathogens hide in the body and how they spread through the body's tissues, doctors will be able to d...

A new understanding of how cells defend themselves against bacterial pore-forming toxins

...xins that increase the infectivity and severity of bacterial diseases. Once the toxin perforates the host me...ell, detecting a variety of danger signals such as bacterial RNA or bits of bacterial flagellin. The inflammasomes join together and activate a protein, caspase-...

Researchers reveal mystery of bacterial magnetism

...s, this very subtle advantage has somehow produced bacterial magnetism." ...

Different strategies underlie the ecology of microbial invasions

...and through the release of parasites (for example, bacterial viruses, known as phages). Focusing on the second mechanism in an experimental setting, the researchers showed that even though some of the invading bacteria can be killed by their own phage parasites, upon their death they release a burst of infecti...

Cloning techniques produce FDA-approved antibiotic

...th the potential for developing new treatments for bacterial infections. The rapid rise of antibiotic resistan...d Drug Administration for the treatment of various bacterial infections, and has proven effective for the treatment of infections that have become resistant to t...

Most widely used organic pesticide requires help to kill

...e insight that gut microbes mediate the effects of bacterial toxins could have application in human and animal medicine as the roles of those bacteria become better understood. Bacterial infections in humans may account for as much as 10 percent of mortality in the United States. "It is thought that the gut ...

A simple feedback resistor switch keeps latent HIV from awakening

...om erupting into full-blown activation? Certain bacterial viruses manage this problem by encoding intricate repressor circuits that efficiently block transcription. But animal viruses, specifically HIV, appear to lack similar repressor circuits. In a new study, published online in the open access journal PL...

Better sludge through metagenomics

...ic blueprint for a key player in this process, the bacterial species Accumulibacter phosphatis. Activated sludge wastewater treatment processes are used throughout the world to purify trillions of gallons of sewage annually. Many treatment plants employ specialized bacteria to remove the nutrient phosphorus...

Resistant bacteria increasing source of muscle infection

... it is important for parents to be aware that this bacterial infection can exist," she said. "They should seek care from their child's primary physician if there are symptoms of such an infection, such as a child limping or if there is redness or swelling in an extremity." Houston, in particular, has a high ...

Cell wall of pneumonia bacteria can cause brain and heart damage

...Specifically, they demonstrated that pieces of the bacterial cell wall bind to the vascular endothelium (inner ...hers reported that this pathway is responsible for bacterial uptake into these cells. Furthermore, the researchers succeeded in blocking a key enzyme of this pat...

P(acman) takes a bite out of deciphering Drosophila DNA

...ently developed technologies: a specially designed bacterial artificial chromosome (BAC) that allows maintenanc...em using the three techniques,?said Bellen. The bacterial artificial chromosome, or BAC, he used allows the scientist to maintain large chunks of DNA in the b...

New finding points way to foiling anthrax's tricks

...s a possible drug target. Raymond, who has studied bacterial siderophores that capture iron for 35 years, recently teamed up with Roland Strong of the Seattle cancer center to study siderocalin, a human protein Strong had found that appeared to interfere with the siderophores secreted by anthrax bacteria. T...

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