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Tag: "bacterial" at biology news

A healthier start to a pig's life

...production. Piglets commonly become susceptible to bacterial infections, restricting their growth rate; and often leading to losses of 10% or more. The antibiotics used routinely for many years to control these rapidly-spreading infections have now fallen out of use, mainly due to the increase in resistant str...

Cells use 'noise' to make cell-fate decisions

...mined that by dampening the noise level within the bacterial cells, they could prevent the cells' transformation between states, essentially "tuning" cellular behavior. "The amplitude of cellular noise correlates with the probability of triggering differentiation," Dr. Süel said. "This is experimental evide...

'Ancestral eve' was mother of all tooth decay

...try (NYUCD) research team has found the first oral bacterial evidence supporting the dispersal of modern Homo sapiens out of Africa to Asia. The team, led by Page Caufield, a professor of cariology and comprehensive care at NYUCD, discovered that Streptoccocus mutans, a bacterium associated with dental car...

Bacteria could steady buildings against earthquakes

...sand grains, cementing them together. By injecting bacterial cultures, additional nutrients and oxygen, DeJong and his colleagues found that they could turn loose, liquefiable sand into a solid cylinder. "Starting from a sand pile, you turn it back into sandstone," DeJong said. Similar techniques have been ...

Viral protein is an effective preventative against infection

...ins and found that they work even from outside the bacterial cell as well as from the inside. In addition, unli...nnot cause the secondary infection." "Secondary bacterial infections cause much of the sickness and about 25 percent of all deaths during flu season," says Mc...

Targeting tumors the natural way

... into primates. The surfaces of most mammalian and bacterial cells express large amounts of a carbohydrate, called alpha-Gal in scientific shorthand, while the cells of humans and other higher primates do not. What humans and primates do produce in abundance is an antibody against the carbohydrate, called anti...

E. coli bacteria migrating between humans, chimps in Ugandan park

...he journal’s Web site. Other studies have found bacterial exchanges between humans and non-human primates ?particularly in areas where the animals are known to frequent garbage piles near human settlements. But this is the first study to document the exchange of E. coli between humans and chimps in a protec...

Reminding doctors which antibiotics to prescribe cuts C. difficile infection rates

...ready been told to use less cephalosporin to treat bacterial infections, but this policy had resulted in increased use of another broad-spectrum antibiotic, amoxicillin/clavulanate. To prevent future CDI rises as a result of the increased use of amoxicillin/clavulanate, a new narrow-spectrum policy was impl...

Manual dishwashing study digs up dirt on dish cleanliness

... trays, steel forks seemed to be the best home for bacterial contaminants. "The prongs of forks actually shield food from the action of scrubbing," Pascall said. "Taking extra time to wash forks is a good idea, especially those covered with sticky foods like cheese." Although cheesy forks were the most p...

Bacterial response to oxidation studied as toxin barometer

...e-gated potassium efflux (GGKE) response. “Typical bacterial you find anywhere will have this response, but the...e public health impact of oxidative toxins using a bacterial glutathione-gated potassium efflux stress response biosensor?(GEOC 51) at 3:25 p.m., Monday, March 2...

Swimming 'to the left' gets bacteria upstream, and may promote infection

...e, but near a surface, opposing forces of flow and bacterial forward motion cause the bacteria to continuously swim to one side ?to the left." The study determined that swimming "to the left" is a hydrodynamic process that is fundamentally related to the way the cells propel themselves in this manner. Köse...

'Hidden-hero' microbes in soil, water may help naturally clean toxic sites

...es that Kostka calls "hidden heroes" -- to promote bacterial growth in the soil subsurface that scrub it of potentially deadly radioactive metal. If bioremediation proves successful on the uranium, technetium, nitrate and other potentially lethal leftovers at the Oak Ridge site, the process should work to m...

Cholera pathogen reveals how bacteria generate energy to live

... ion pump needs to carry ions from one side of the bacterial membrane to the other, the enzyme has to reach all the way from the water-like medium inside the cell, through the oily membrane interior, to the water-like environment outside the cell. For this reason, the enzyme is made up of water-soluble and oi...

New approach could lower antibiotic requirements by 50 times

...ne. It is the phages' ability to channel through bacterial cell membranes that boosts antibiotic effectiveness. 'Pseudomonas bacteria for example are particularly multi-resistant to antibiotics because they have efflux pump mechanisms that enable them to throw out antibiotics. A pore in the cell wall would o...

Microbes compete with animals for food by making it stink

...from microbial attack. To determine if reducing bacterial growth affected an animal's ability to find the bait, researchers also repeated the trapping experiment in the marsh, but used newly thawed fish, fish soaked in antibiotic treated water and fish aged without antibiotics. They found that both freshly ...

ASU researchers test antibacterial effects of healing clays

...ned in France to heal Buruli ulcer, a flesh-eating bacterial disease found primarily in central and western Afr... clinical microbiologist," Haydel says. "I ordered bacterial strains that pharmaceutical companies use to test their antimicrobials." Haydel and Williams test...

Novel experiment documents evolution of genome in near-real time

...of Nature Genetics rapid evolutionary changes in a bacterial genome, observed in near-real time over a few days...napshots" of the genome sequences of more than 100 bacterial species, from the harmless to those that cause plague, but this new report shows how these genomes a...

Solution to bacterial mystery promises new drugs

... uses PlsX and PlsY is the most widely distributed bacterial pathway for initiating the production of phospholipids," explained the study's first author, Ying-Jie Lu, Ph.D., of the St. Jude Department of Infectious Diseases. "It turns out that E. coli is more of an oddball rather than in the mainstream when it...

MRSA toxin acquitted: Study clears suspected key to severe bacterial illness

Researchers who thought they had identified the bacterial perpetrator of the often severe disease caused by ...man white blood cells--our primary defense against bacterial infections--and spreading disease. The findings, which appear online in The Journal of Infectious Di...

Common ancestry of bacterium and plants could be key to an effective new treatment for chlamydia

...sed by Chlamydia to synthesize a chemical found in bacterial cell walls. It is the synthesis of cell walls that is inhibited by penicillin. This discovery points to the likelihood that, if researchers could find an inhibitor for L,L-diaminopimelate aminotransferase they would have a new antibiotic that would ...

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