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Tag: "protozoan" at biology news

In the migratory marathon, parasitized monarchs drop out early

...ty researchers found that monarchs infected with a protozoan parasite fly slower, tire out faster and expend more energy flying than healthy monarchs. These results, published in the March issue of Ecology Letters, could explain why parasite infections are much lower in migratory monarch populations compared ...

Protein offers way to stop microscopic parasites in their tracks

...nces. Scientists identified the new protein in the protozoan parasite Toxoplasma, which epidemiologists estimate infects 25 percent of all humans. The parasite rarely causes symptoms in most people, but can become a potentially life-threatening infection when the immune system is weakened by illnesses such as ...

Norovirus found to cause traveler's diarrhea

...ico, for Noroviruses, as well as for bacterial and protozoan pathogens. Sixty-five percent of the individuals in the study had at least one stool sample positive for Norovirus. Although Norovirus previously has been implicated as a cause of traveler's diarrhea among visitors to Mexico, this is the first study ...

Logging changed ecological balance for monkeys, damaged health

...were analyzed for the eggs and larvae of worms and protozoan cysts. The study appears online ahead of publication in the Journal of Applied Ecology. While the three primate species were subject to a higher risk of infections, only the guenons (pronounced GWINN-ins) suffered from an increased number of parasi...

Affymetrix and ParAllele Launch Industry's Most Comprehensive Product Line for Targeted Genotyping

...were analyzed for the eggs and larvae of worms and protozoan cysts. The study appears online ahead of publication in the Journal of Applied Ecology. While the three primate species were subject to a higher risk of infections, only the guenons (pronounced GWINN-ins) suffered from an increased number of parasi...

President Bush's cut to AIDS prevention in Africa would be devastating

...were analyzed for the eggs and larvae of worms and protozoan cysts. The study appears online ahead of publication in the Journal of Applied Ecology. While the three primate species were subject to a higher risk of infections, only the guenons (pronounced GWINN-ins) suffered from an increased number of parasi...

US/African project deciphers deadly parasite genome

... a genomics based sub-unit vaccine to control this protozoan pathogen. "Such an achievement would be a major br...ent and would increase the hope for tackling other protozoan diseases," he says. East Coast fever, which is endemic in several African countries, was first reco...

Parasitic worms used to fight bowel disease

...w from veterinary medicine that many bacterial and protozoan pathogens, especially those that multiply inside of cells, elicit an immune response in the host that would normally cause inflammation, but that worm parasites mount an anti-inflammatory defense that modulates it," said Mansfield, a professor of lar...

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

..., one area has remained murky: disorders caused by protozoan parasites. Now, because of a study just published and led by scientists at the University of Georgia, researchers are closer than ever to understanding how T cells respond to parasitic diseases that kill millions each year. "We have needed to reall...

DNA to the defense

...eping sickness, or trypanosomiasis, is caused by a protozoan parasite known as Trypanosoma brucei . Endemic to sub-Saharan Africa, it is transmitted by tsetse flies and infects a variety of mammals, including humans. There are no vaccines against T. brucei , and most drugs to treat the disease have dangero...

Dragonfly's metabolic disease provides clues about human obesity

...'re seeing it all relate back to this non-invasive protozoan in the gut." The work raises a fascinating questi...ems, have chronic problems with Cryptosporidium (a protozoan parasite closely related to the one found in dragonflies) that over time impairs their metabolism in...

Paramecia adapt their swimming to changing gravitational force

...er, Valles and Guevorkian could test the limits of protozoan endurance. At about eight times normal gravity, the little swimmers stalled, swimming upward, but making no progress. At this break-even point, the physicists could measure the force needed to counter the gravitational effect: 0.7 nano-Newtons. For c...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...tificially construct, and then express in yeast, a protozoan gene that contributes to such resistance. And it w... develop malaria, which is caused by a single-cell protozoan parasite transmitted by the bite of the female Anopheles mosquito. There are about 160 different spe...

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