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Tag: "virulent" at biology news

Eating, body weight regulated by specific neurons

...l with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in contact with the animals. The outbreaks occurred in northern Italy in regions...

European Commission funds EBI to do new research on synergies between bioinformatics and medical informatics

...l with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in contact with the animals. The outbreaks occurred in northern Italy in regions...

Researchers develop new testing methods for potential monkeypox or smallpox outbreak

...s found this particularly interesting because this virulent strain of monkeypox virus resulted in numerous hos...e would maintain fully protective immunity against virulent poxvirus infections, and these findings are totally in line with what we expected. What this means i...

UW scientists report a new method to speed bird flu vaccine production

... virus - whose genes are manipulated to disarm its virulent nature - can be seeded into chicken eggs to gener...n influenza viruses." When a new strain of highly virulent influenza emerges to infect humans, vaccine makers must tailor their vaccines to match it because, g...

UF scientist finds unexpected link between cat and human AIDS viruses

... said. "We found that whenever we tried using less virulent strains of virus, we were able to make a better vaccine." Yamamoto's team was also surprised to discover that a core protein found in HIV also effectively protects cats against FIV. "So what does this mean to human AIDS research? The viruses HIV an...

Researchers discover why melanoma is so malignant

...n the early stages, melanoma can be a particularly virulent form of cancer, spreading through the body with an efficiency that few tumors possess. Now, researchers at Whitehead Institute for Biomedical Research have discovered one of the reasons why this particular skin tumor is so ruthless. Unlike other canc...

New possibilities for flu antiviral and vaccine research emerge from 'Spanish flu' virus

...als or other interventions that would work against virulent pandemic or epidemic influenza viruses," said Tumpey. "Science is publishing this study because it provides information necessary for developing drugs and vaccines that could help prevent another global flu pandemic. We carefully considered the impl...

First big influenza genome study reveals flu evolution

...d millions of deaths. Today, scientists worry that virulent influenza strains in other species, such as the H5N1 bird flu strain found in poultry and migratory birds in Asia and Russia, will jump the species barrier into humans and trigger a new pandemic. Although researchers first isolated the influenza v...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...of the same sex or "mating type" produced the more virulent form. That strain has now taken hold and appears t...the researchers identified two forms: an extremely virulent major strain, which accounted for 95 percent of all samples, and a less virulent and less common str...

Plant defenses prompt bacterial countermeasure in the form of 'island' DNA excision

...mechanisms can directly drive the evolution of new virulent forms of a bacterial pathogen. ...

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

...ptic soap may actually open an avenue for the more virulent forms of bacteria to attack patients. This is so b...would be no environmental "incentive" for the more virulent strains to develop. Any patients needing antibiotics would be transferred to hospitals where they ar...

MRSA use amoeba to spread, new research shows

...at by infecting amoeba first, MRSA may emerge more virulent and more resistant to antibiotics when it infects humans. "Infection control policies for hospitals should recognise the role played by amoeba in the survival of MRSA, and evaluate control procedures accordingly," said Professor Mike Brown from the ...

Mice studies illustrate potential of chimp/human antibodies to protect against smallpox

... virus, which closely mirrors smallpox but is less virulent in humans. Currently, the smallpox virus exists in only two laboratories found in Atlanta, Georgia, and in Russia. ...

New cellular flaw found in some virulent breast cancers

...rowth switch, CDK4 kinase, causing it to unleash a virulent proliferation of cancer cells and creating a tumor with a very poor prognosis. "The development of cancer drugs like Gleevec and Iressa have shown that it is possible to block the action of kinases," said Sicinski, "so we hope that these findings wi...

Hantavirus found in African wood mouse

...at symptoms the Sangassou virus might cause or how virulent it is," said ter Meulen, "but we have already obtained preliminary evidence that the Sangassou virus can infect humans, because we identified hantavirus-specific neutralizing antibodies in [the blood] of humans living in the area where the virus was...

Gene thwarts some pathogens, gives access to others, could save crops

...s. But unexpectedly, it is completely resistant to virulent strains of the biotrophic bacteria." The study of BIK1's role in plant resistance to these two types of pathogens appeared in the January issue of the journal Plant Cell. The study also shows that the gene impacts plant growth and development as evi...

Role of protein in immune response may aid HIV research

... skin produces these proteins only when exposed to virulent or high numbers of bacteria. In contrast, the liver, whose function is to continuously monitor the blood and fight acute infection, produces PGLYRP constantly. The researchers suggest that the liver's constant protein production may help fulfill t...

Microscopic passengers to hitch ride on space shuttle

...n immune system and that some microbes become more virulent when grown under conditions that simulate spaceflight, thus increasing the risk of astronauts becoming sick during flight. Whatever the mission or its duration, microbes are present where there are human beings. This experiment will focus on inves...

HIV-1's high virulence might be an accident of evolution

...to an SIV strain found in chimpanzees--is the more virulent of the two human strains and the source of the maj...great majority of primate SIVs, including the less virulent human strain HIV-2, suppress the expression of a receptor normally found on the surface of T cells, ...

Potato blight pathogenicity explained by genome plasticity

... present as a single, full-length copy in both the virulent and avirulent strains. They also identified multiple copies of pi3.4 only in the avirulent strain ?but, interestingly, these copies represented only part of the pi3.4 gene. The authors speculate that the partial gene copies could function as a ...

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