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Tag: "infect" at biology news

Researchers use dirt to stay one step ahead of antibiotic resistance

Dirt may be a key to how bacteria that infect humans develop a resistance to antibiotic drugs. ...why antibiotic resistance happens in bacteria that infect people, predicting future clinical problems, and testing new antibiotics. Antibiotic resistance has...

Cell barrier shows why bird flu not so easily spread among humans

...acteristic for the virus to equip itself to easily infect humans, the key development required for the virus... they are unable to make infectious particles that infect other cells -- or other hosts. "Our findings provide a rational explanation for why H5N1 viruses ra...

Malaria parasites develop in lymph nodes

...ed, the parasites burst out of the liver cells and infect red blood cells, beginning the onset of malaria. ...e, Ménard said. Only fully developed parasites can infect red blood cells and cause malaria, so the lymph-node parasites probably don't contribute to the appe...

Marine mammals are on the frontline of failing ocean health

...ection is front and center. Toxoplasma can also infect humans. It is the third most common cause of death due to food borne disease in the US: estimates indicate that up to 25% of the population may be infected with the parasite, but people rarely show symptoms or are simply hit with a flu-like illness....

UW scientists unravel critical genetic puzzle for flu virus replication

..., the particles a virus creates and sends forth to infect cells, that puzzle has been resolved. The new wor...epend on the cells of their hosts to survive. They infect cells and use them to help make more infectious particles, which are released from the cell and go o...

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

... the fact is that a great number of organisms that infect humans come in and set up housekeeping as it were. There are no clinical symptoms of anything wrong and people take the organisms with them to their graves." It's not that the organisms in question - such as the bacteria that cause pneumonia or meni...

Learning to love bacteria: Stanford scientist highlights bugs' benefits

... the fact is that a great number of organisms that infect humans come in and set up housekeeping as it were. There are no clinical symptoms of anything wrong and people take the organisms with them to their graves." It's not that the organisms in question - such as the bacteria that cause pneumonia or meni...

Ancient DNA helps UF researchers unearth potential hemophilia therapy

...y hide corrective genes inside viruses, which then infect cells. Without the virus to act as a key, the gene would be unable to enter the cell. But viral gene therapy has been associated with medical complications, and a few human patients have died as a result. Instead, UF researchers used a novel nonvira...

UCSD study finds anthrax toxins also harmful to fruit flies

... toxins, including LF and EF, and is only known to infect mammals. Because fruit flies lack components required for toxin entry into cells, they cannot actually contract the anthrax disease. However, the study finds that fruit flies can be used to test the effects of a single virulence factor, such as the L...

Performing monkeys in Asia carry viruses that could jump species to humans

...trovirus (SRV), which, though it has been shown to infect humans in a laboratory setting, has yet to be associated with any disease in humans. However, both SRV and SFV are retroviruses, which are typically slow-acting in their host, so it could be many years before physicians know the effects of those viru...

Plants, too, have ways to manage freeloaders

...nitrogen-fixing bacteria in the soil. The bacteria infect the roots and stimulate them to form nodules. Nodule cells then engulf the bacteria and provide oxygen and energy from photosynthesis in return for nitrogen needed to make proteins. Such mutualism is puzzling, however, Simms said. "Mutualism is a p...

New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics

...n determining which flu strains are most likely to infect people the following year in order to develop annual, preventative vaccines, she said. "This new technology should help provide better global influenza surveillance by making it easier for more laboratories to swiftly identify severe flu strains, wh...

Olfactory system detects pheromones that control reproduction

...s because it could be introduced into a neuron and infect its way upstream along the network of axons that connect neurons. The virus could also jump the synapses between neurons, as it moved from one neuron to the next. As a result, the researchers could use the pseudorabies virus to obtain a detailed look...

Sangamo BioSciences demonstrates its ZFP treatment protects cells from HIV infection

...the ZFN-modified cells, HIV was once again able to infect these cells. Sangamo has shown disruption of the CCR5 gene in a number of different cell types including T-cells, the target cell for this therapeutic approach. "CCR5 is an important target in the fight against HIV/AIDS," stated Edward Lanphier, S...

SLU researchers uncover direct evidence on how HIV invades healthy cells

...st come together inside a healthy cell in order to infect it, until now, investigators have not been able to illuminate the process. "Many biological and structural aspects of HIV integration are undefined," said Sibes Bera, Ph.D. "Therefore, any insight into the molecular mechanism of this process is sign...

Genetic defenders protect crops from fungal disease

...species of mildew is host-specific, meaning it can infect some plant species, but not others. By disabling p...genes in Arabidopsis, the researchers were able to infect the plants with species of powdery mildew that normally attack peas or barley, revealing much about ...

First big influenza genome study reveals flu evolution

...rticular strains to become more virulent, adapt to infect new species, or evade immune response. Moreover,... genetically. When two different influenza strains infect the same cell, their separate RNA segments can easily swap material, resulting in entirely new strai...

Polymer gel can block toxic leakage problem in gene therapy

...rapy that uses relatively harmless adenoviruses to infect tumor cells. Once in a targeted tumor, genes in th... numbers of viruses so those will link up with and infect tumor cells instead, Yuan said. The Duke team found the polymer-virus mixture "could reduce virus d...

Scientists develop fungus-fighting vaccine

... to protect against fungal pathogens that commonly infect humans, according to a study by Torosantucci and colleagues in the September 5 issue of The Journal of Experimental Medicine. Although these fungi pose little threat to people with healthy immune systems, they can cause fatal infections in those whos...

Agricultural workers at increased risk for infection with animal flu viruses

... increased risk of infection with flu viruses that infect pigs, according to a study funded in part by the National Institute of Allergy and Infectious Diseases (NIAID), one of the National Institutes of Health (NIH). While the findings are not entirely unexpected, the strikingly higher risk of infection ...

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