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Tag: "deadly" at biology news

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

...ween non-human primates and humans is not new. Two deadly viruses, HIV and Ebola, are believed to be linked to chimpanzees and other non-human primates. Human diseases also pass to monkeys and apes, with equally dire consequences: Pneumonia, respiratory disease, scabies and a polio-like virus have caused ep...

Salamanders suffer delayed effects of common herbicide

...xtremely low concentrations of the chemical may be deadly to amphibians in the long run. "We are concerned that most studies used to make pesticide registration decisions and to derive safe concentrations last for about four days," said Jason R. Rohr, research associate at the Penn State Institutes of En...

Statin plus cancer drug deliver combo punch to brain cancer cells

...dy is being studied in people at high risk for the deadly skin cancer, melanoma. First extracted from corn lilies in the 1950s, cyclopamine is a powerful toxin known to stunt fetal development and cause birth defects in humans and animals. Its connection to anti-cancer efforts grew out of later insights ...

Antibody signal may redirect inflammation to fuel cancer

...iscovering an apparent trigger to this potentially deadly process. Typically, the "innate" immune system's Pac-Man-like white blood cells, or leukocytes, engulf and destroy invading microbes when receptors on their surface receive a signal from serum in the blood -- often an antibody produced by a B cell ...

Scientists uncover new target in cancer mutation puzzle

...ancer genes, p53 and Ras. By closing in on this deadly collaboration, researchers showed for the first time why some molecules such as Rho are targeted by cancer genes ?and how they might lead to a promising way to intervene against cancer. "We have very little understanding of how Ras and p53 or any...

Study uncovers a lethal secret of 1918 influenza virus

...am was able to show that the 1918 virus prompted a deadly respiratory infection that echoed historical accou...excessive immune reaction is characteristic of the deadly complications of H5N1 avian influenza, the strain of bird flu present in Asia and which has claimed ...

Jefferson researchers' discovery may change thinking on how viruses invade the brain

A molecule thought crucial to ferrying the deadly rabies virus into the brain, where it eventually kills, apparently isn’t. The surprising finding, say researchers at Jefferson Medical College in Philadelphia, may change the way scientists think about how central nervous system-attacking viruses suc...

Scientists map key landmarks in human genome

...s basic research on gene mutations involved in the deadly skin cancer. He said the work that led to the current paper began when his lab was studying the protein, MITF, made by one of these genes, which influences the expression of other genes. "We wanted to understand how MITF regulates target genes, an...

Selective marker found to indicate aggressive form of breast cancer

...structural protein called nestin to a particularly deadly form of breast cancer, identifying a new biomarker that could lead to earlier detection and better treatment. In the January 15 issue of Cancer Research, researchers from Dartmouth Medical School demonstrate that nestin could represent a selective ...

Molecular differences between early and advanced melanomas could provide new drug targets

... growing vertically beneath the skin and turn into deadly invasive cancers, scientists have found. Understanding this key molecular difference between radial melanomas that spread on the surface of the skin and melanomas that grow vertically and invasively could provide new targets for the development of d...

Antifungal drug kills TB bug

...to find new treatments for one of the world’s most deadly infectious diseases say drugs used to treat common fungal infections may provide the answer. Tuberculosis, or TB, is a highly contagious disease of the lungs that was thought to have been virtually eliminated by the 1960s, but is now resurgent and k...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...ame basic genetic mutations as the more common and deadly type of ductal pancreatic cancer, has long been a ...a, the combination of Kras and p53 led to the more deadly form of pancreatic ductal adenocarcinoma. Earlier studies by researchers in Boston also found the sa...

Anthrax attack posed greater potential threat than thought

... Bacillus anthracis, the bacterium that causes the deadly disease anthrax, was opened in Daschle's office at the Hart Senate Office Building in Washington, DC. Those in or near Daschle's office, judged likely to have been exposed to the spores, received antibiotics or a vaccine, as did others within or outs...

Hybrid molecule causes cancer cells to self-destruct

...presents a promising new strategy for fighting the deadly disease. "For a long time, cancer researchers did not pay much attention to the use of sugars in fighting cancer," said Gopalan Sampathkumar, a postdoctoral fellow in the university's Department of Biomedical Engineering and lead author of the jou...

How trees manage water in arid environments

... winds and high moisture, resulting in potentially deadly weather. The Arizona monsoon usually begins around July 7 and continues for the next two months, resulting in about one-third of the region's yearly rainfall. The monsoon varies from year to year in starting date, duration and intensity. "The s...

NIAID DNA vaccine for H5N1 avian influenza enters human trial

...the H5N1 strain and the H1N1 virus that caused the deadly 1918 pandemic. The DNA vaccine used in this study is similar to other investigational vaccines evaluated by the VRC that hold promise for controlling other viruses, such as HIV, Ebola, SARS and West Nile. "An effective H5N1 influenza vaccine woul...

Bacterial walls come tumbling down

...el antibiotics. The drugs are much needed to treat deadly infections initiated by Staphylococcus aureus and other bacterial pathogens. The research team, led by Natalie Strynadka, a Howard Hughes Medical Institute (HHMI) international research scholar at the University of British Columbia in Vancouver, Can...

LIAI completes world's most comprehensive analysis on influenza virus data

...onal and pandemic influenza strains, including the deadly H5N1 avian flu. "This study shows what is currently known about influenza A virus epitopes -- what are the areas that are well covered in the current research and where are the holes in our knowledge," said Alessandro Sette, Ph.D., director of LIA...

Scientists identify pancreatic cancer stem cells

...owth, progression, and metastasis that define this deadly cancer. In the February 1 issue of Cancer Research, the researchers demonstrate that only 100 of these stem cells are needed to produce human pancreatic cancer in half of mice tested. They also found these cells are at least 100 times more tumorigen...

Rapid response was crucial to containing the 1918 flu pandemic

One of the persistent riddles of the deadly 1918 Spanish influenza pandemic is why it struck different cities with varying severity. Why were some municipalities such as St. Louis spared the fate of the hard-hit cities like Philadelphia when both implemented similar public health measures? Wha...

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