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Tag: "bacterial" at biology news

Too much sugar not good for coral reefs

...-that often kills corals indirectly by stimulating bacterial growth." "Sugars in runoff cause bacteria normally associated with corals to grow out of control. People don't usually even measure carbon when they do water quality studies. They only look at the nutrients found in fertilizers. Nitrogen and phosp...

Researchers use dirt to stay one step ahead of antibiotic resistance

...lopment of new combination therapies for resistant bacterial strains. Studying antibiotic resistance from an evolutionary perspective is one way that researchers are attempting to stay one step ahead of resistant bacteria." Antibiotic resistant bacteria have become a major health threat andhave limited our a...

Flesh-eating bacteria escape body's safety net

... A Streptococcus. Among the most important of all bacterial pathogens, strep is responsible for a wide range o... corresponding gene into a normally non-pathogenic bacterial strain. Addition of the single gene allowed these bacteria to degrade DNA, escape neutrophil killin...

Boosting newborns' immune responses

...d normal, adult levels of TNF-alpha in response to bacterial and viral triggers. "In the future, we could try to block adenosine in newborn animals to see if this helps protect against infection," Levy says. Levy believes the differences his team has uncovered in newborns' immune response patterns may serve ...

Common bacteria pirate natural mechanism to get inside cells

...mmune system or treatments such as antibiotics for bacterial infections, Dr. Daaka says. "Some bacteria and vir...model to show how nitric oxide unwittingly assists bacterial uptake and survival. "In bladder cells, E. coli uses this mechanism to get inside the cells and hi...

York researchers develop pollution-busting plants to clean up contaminated land

...inogenic. The six-strong CNAP team has isolated a bacterial micro-organism in the soil in contaminated land that can utilise the explosives as a source of nitrogen for growth. But, because RDX is so mobile in soil, the bacteria present are not degrading it quickly enough to stop the contamination of land and ...

Scientists look to the Bahamas as a model for coral reef conservation

...ist is raising the intriguing idea that persistent bacterial and viral infections have benefits. Stanley Falko...the journal Cell, in which he asks, "Is persistent bacterial infection good for your health?" The essay is based on a talk he was invited to give at Cambridge Un...

Learning to love bacteria: Stanford scientist highlights bugs' benefits

...ist is raising the intriguing idea that persistent bacterial and viral infections have benefits. Stanley Falko...the journal Cell, in which he asks, "Is persistent bacterial infection good for your health?" The essay is based on a talk he was invited to give at Cambridge Un...

Minimal genome should be twice the size, study shows

...knocking out', a series of individual genes from a bacterial genome to see what effect this has on its ability ...The researchers have developed a way of predicting bacterial genome content using two bacteria that have evolved from E.coli. Buchnera and Wigglesworthia live ...

Patterns in genome organization may partially explain how microbial cells work

...which those genes are arranged on chromosomes." A bacterial cell usually operates with one copy of its genome....ined spots on chromosomes have indicated that many bacterial genes tend to be found at specific cellular locations. Patterns are not obvious in the sequences of ...

Pair of studies offer new clues to combat antibiotic resistance

... components in the protective membrane surrounding bacterial cells, will appear in the February 17 inaugural pr...acteria. The polymers are considered essential for bacterial survival. Until now, these enzyme precursors have been difficult to study due to their presence in l...

Infection 'alarm' yields clues to immune system behavior

...ne response begins when white blood cells detect a bacterial intruder or toxin in the body. They produce TNF to carry a message about this health threat to neighboring blood vessel cells, asking them to join in the fight. To send this message, a TNF molecule latches onto the surface of a neighboring cell and a...

UCSD study finds anthrax toxins also harmful to fruit flies

... be used to determine the function of a variety of bacterial and viral pathogenic factors." Anthrax bacterium...m system to determine the function of a variety of bacterial and viral pathogens of unknown function. One could then test hypotheses obtained from these studies ...

Antibacterial coatings cut infection rates

... Griesser said. Catheters can also be a source of bacterial infections, which can spread from the skin to the ...re system. "Another significant problem caused by bacterial contamination of medical devices is bacteria that settle on contact lenses and cause inflammation an...

New peptide antibiotic isolated from American oyster

...e caused major decreases in oyster productivity -- bacterial pathogens -- such as Vibrio vulnificus that can cause a food-borne illness are a human health concern, according to Noga. This is the first time that researchers have isolated an antimicrobial peptide from any oyster species, he says. NC State vete...

A salty tale: New bacterial genome sequenced from ancient salterns

...xpect." Normally, high-salt environments denature bacterial proteins. To survive, S. ruber must maintain a high concentration of potassium inside its cytoplasm, keeping an osmotic balance against the high sodium chloride concentration outside. That's where evolutionary strategy comes in. Analyzing the bacte...

T-rays: New imaging technology spotlighted by American Chemical Society

...e will use this method to probe photosynthetic and bacterial reaction centers, and perhaps DNA." ...

'Good' bacteria could save patients from infection infection by deadlier ones

...ting patients at a greater risk of suffering fatal bacterial infection? Yes, argues Mark Spigelman, a visiting...oints to a recent BBC report on the poor record of bacterial infections in patients (the worst in Europe) in British public hospitals, especially involving the d...

Plants, too, have ways to manage freeloaders

...an favor more cooperative rhizobia by manipulating bacterial fitness in the nodule," the authors wrote. "We th...estingly, not all plants seem to nodulate the best bacterial species, which could mean that strains also differ in how easily they can enter the plant roots to i...

Chlamydia parasite lives off our fat

Invasive bacterial pathogens, the Chlamydiae know us very, very well....oplet formation in the host, they sharply impaired bacterial growth. That finding immediately presents a new target for anti-Chlamydia drugs but it also suggest...

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