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Tag: "infect" at biology news

New bird flu drug promises to beat the problem of resistance

...ace of an infected cell so that they can spread to infect other cells. (Differences in the H and N proteins allow scientists to distinguish between the different types of influenza virus. For instance, the current strain of avian influenza circulating is H5N1) Relenza, Tamiflu and the new class of mole...

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

... the immune system, thereby allowing the SIVs that infect monkeys to persist and multiply with high efficien...as previously shown that the two forms of HIV that infect humans originated from related SIVs found in different species of African primates. HIV-1--most clos...

Scientists to employ Arctic ice and polar bears to protect diversity of world's crops

.... The virus uses the HA proteins on its surface to infect cells in the respiratory tract. The resulting vaccine had the outside appearance of a dangerous virus that would stimulate the immune system, but the inside genes of a harmless variety of virus that could not cause disease. The St. Jude team was the ...

H5N1 vaccine could be basis for life-saving stockpile

.... The virus uses the HA proteins on its surface to infect cells in the respiratory tract. The resulting vaccine had the outside appearance of a dangerous virus that would stimulate the immune system, but the inside genes of a harmless variety of virus that could not cause disease. The St. Jude team was the ...

Even a little cooling helps after cardiac arrest

...hese worms, known as trematodes, must sequentially infect certain hosts to complete their lifecycle. Snails to crabs to birds might be a typical sequence for one species, snails to fish to birds for another. These trematodes also stand apart from other parasites in that they cause negligible disease for the...

How healthy is that marsh? Biologists count parasites

...hese worms, known as trematodes, must sequentially infect certain hosts to complete their lifecycle. Snails to crabs to birds might be a typical sequence for one species, snails to fish to birds for another. These trematodes also stand apart from other parasites in that they cause negligible disease for the...

Cornell researchers find serious fish virus in Northeast for first time

...es it infects," Bowser said. The virus is known to infect round gobies, muskellunge, freshwater drum, smallmouth bass, bullhead, yellow perch and crappie, but more study is needed to determine all the species at risk. "The significance to the sport-fishing industry is not known at this point." Sport fishi...

Giant deep-sea tubeworm's meal ticket comes in as a skin infection

...graphers have shown that thesulfur-eating bacteria infect the larvaethrough their skin. Andrea Nussbaumer and Monika Bright of theUniversity of Vienna, and Charles Fisher,professor of biology at Penn State, reporttheir findings this week in the Britishjournal Nature. Previous groups had shown that, after ...

NHGRI announces latest sequencing targets

...ed. Dermatophyte fungi are highly communicable and infect millions of people worldwide leading to costs of approximately $400 million a year for treatment alone. The dermatophytes to be sequenced are Trichophyton rubrum, Microsporum canis and Microsporum gypseum, all of which will be sequenced to a high-den...

UF scientists restore sight to chickens with blinding disease

...eatment, UF scientists constructed a virus able to infect photoreceptors, delivering a normal copy of the GC1 gene to these cells. Using a very fine glass needle, they injected the viral vector into the developing nervous system of a chicken embryo through a tiny hole in the eggshell. The shell was resealed...

The structure of a virus infecting bacteria resembles a human virus

..., resembles that of certain dangerous viruses that infect people. Studying this bacteriophage reveals variou...The similarity of double-stranded RNA viruses that infect different organisms is probably due to their mutual, primitive origin. During evolution, the basic s...

Genes discovered that allow gum disease bacterium to invade arteries

...gum-disease bacteria that allow them to invade and infect human arterial cells, offering one possible explan...udied four genes of P. gingivalis that allow it to infect and survive inside artery cells," says Paulo Rodrigues, a researcher on the study. Rodrigues and hi...

Researchers add crucial information on how the body's T cells react to parasitic diseases

...arasite must have sialic acids to invade cells and infect the host. But since it doesn't have it, it must steal it from the host cells." The problem is that T. cruzi potentially expresses more than a thousand ts genes, and this pool varies from parasite to parasite--making this set of proteins a poor choice...

Malaria, potato famine pathogen share surprising trait

...laria proteins could just as effectively enter and infect a cell when it contained the P. infestans leader sequence instead of its own. "Our findings show that very distinct microbes can share similar strategies for delivering toxic proteins to their targets," Kamoun said. About a year and a half ago, Kam...

Mice lacking key immune component still control chronic viral infections

...wn as Kaposi's sarcoma). Other herpes viruses that infect humans include the alpha herpes viruses herpes simplex virus 1 and 2, which cause cold sores and genital herpes, and varicella zoster virus, which causes chickenpox. Infection with gamma herpes viruses such as EBV and KSHV increases the risk of some ...

Cancer virus protein needed for successful infection

...udy ?done using an animal model that the virus can infect ?suggests that HTLV-1 needs the p13 protein to successfully infect the body and reproduce. The research, published in the April 1 issue of the Journal of Virology, w...

Wisconsin scientists grow two new stem cell lines in animal cell-free culture

...ic agents might be taken up in the human cells and infect human patients, should those cells be used for therapy. "All of the concerns about contaminating proteins in existing stem cell lines can essentially be removed using this medium," says the Nature Biotechnology paper's lead author, Tenneille Ludwig,...

Unraveling the viral mechanism

... better understanding of a variety of viruses that infect people and animals. In a report that appears in a... to understand better how this and similar viruses infect nerve cells and, some day, interrupt that disease process. The advance occurred because of innovati...

Finding a virus is not all bad news

...the answers might all be found in the viruses that infect them. Dr Alexei Drummond, from The University of Auckland's Faculty of Science, has been part of a global research team analysing the genetic sequences of viruses in animals. This pioneering technique has so far proved to be more effective than t...

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

... reaction. Botrytis is a type of pathogen that can infect and obtain nutrients from dead cells on a plant and actually secretes toxic substances into plant tissue in order to gain entry. Another type of pathogen, called a biotroph, must feed on live plant cells. As a strategy to contain a pathogen, plants a...

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