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Tag: "spreads" at biology news

CSIRO scientists join fight to save 'Tassie devil'

...pete for food. Once the cancer becomes visible and spreads internally through the body, the animal usually dies within a few months from starvation and the breakdown of body functions. The integrated research team at AAHL will use a variety of techniques including microscopy, microarrays and a range of m...

Amphibians in losing race with environmental change

...ain infectious diseases of some amphibians, and it spreads more easily in closely connected communities. "Although relatively rapid evolution may occur within some amphibian populations when a novel threat arises, other threats may be too intense and too new for amphibians to cope with them," the research...

Vaccine prevents prion disease in mice

...l and there is no treatment or cure. The disease spreads when an animal eats the body parts of other animals contaminated with prions. The disease causes dementia and abnormal limb movements. Prion is a protein that is also an infectious agent. The proteins are so similar to proteins found normally tha...

The quest for an effective HIV vaccine presents new possibilities, challenges

...body, it infects crucial CD4+ T cells, replicates, spreads throughout the body and establishes HIV reservoirs in lymphatic tissues. Within weeks of exposure, virus levels peak and then decline to levels that may remain low for months or years. It is believed that CD8+ T cells--so-called killer T-cells--are r...

Leeches ferry infection among newts

...are transmitted through a vector, an organism that spreads disease from one animal to another. The researchers found evidence for leech-borne transmission of a little-known fungus-like organism of the genus Ichthyophonus, which infects the muscles of red-spotted newts and other amphibians in North Americ...

Risk of HIV transmission highest early in infection

...The technique follows the history of a virus as it spreads from one person to another by looking at the evolution of viral genetic material in infected individuals. Drs. Brenner, Wainberg, and colleagues found that 49 percent of early infections formed phylogenetic clusters—very close branches on the fam...

Synthetic peptide targets latent papilloma virus infections

... skin and the lining of the vagina and cervix, and spreads as these cells divide. The UC Berkeley team created a protein fragment, or peptide, that successfully prevents the virus from hitching a ride on a cell's chromosomes as the cell divides. If such a peptide - or more likely, a drug that mimics the ac...

Researchers find hepatitis A and hepatitis C attack same protein to block immune defenses

..., and produce very different diseases. Hepatitis A spreads through the consumption of fecal particles from an infected person (in pollution-contaminated food or water, for example), but hepatitis C is generally transmitted only by direct contact with infected blood. Hepatitis A produces fever, nausea and abd...

Antivirals effectively curb influenza virus

... in non-household settings where influenza readily spreads ?such as schools, homes for the elderly and workplaces ?would be beneficial not only for planning management of seasonal influenza but also would be invaluable in pandemic planning. Additionally, simple solutions such as standardized randomization a...

Will the plague pathogen become resistant to antibiotics?

...antibiotics, we warned that if this type of strain spreads or emerges again, it would pose a serious health problem" says co-author Elisabeth Carniel, head of the Yersinia Research Unit at the Institut Pasteur in Paris. "The discovery that the multiresistance plasmid acquired by the plague bacillus is widesp...

Tears reveal some of their deepest secrets to researchers

...a part of tears before. With each blink, meibum spreads over the surface of the eye. It keeps the watery middle layer in place, ensuring that our eyes stay moist. Finding these lipids may help scientists better understand the causes of eye-related disorders such as dry eye disease, which affects anywhe...

Bird flu -- Call for antiviral drugs to be shared

... is low, it will take many months before the virus spreads w orldwide and there will be plenty of time to bring an effective vaccine into use. But if the number is high then it could be difficult or impossible to contain the virus with vaccination. Other measures could therefore be crucial, but it is lik...

Brain works more chaotically than previously thought

...ain, somewhat like electricity in a computer, only spreads directionally in the brain, following specific ordered circuits. Too much glutamate is the death of cells There is, however, also an aspect to the research team's discovery that is of considerable medical interest. It has long been known that...

British cattle give TB to badgers, finds UC Davis expert

...h more other badgers; that is probably why disease spreads more rapidly," said Woodroffe, the leader of a team which also included researchers from Britain's Central Science Laboratory and Veterinary Laboratories Agency. The biggest increases in infection rates happened in culling areas that could most easil...

Brown scientists map structure of DNA-doctoring protein complex

...ctoring not only shapes species over time, it also spreads antibiotic resistance and is used by bacteria that spread Lyme disease and by viruses linked to certain forms of cancer. Last year in Nature, scientists working in the Brown University lab of Arthur Landy and the Harvard Medical School lab of Thom...

Newly identified biomarker detects and regulates spread of brain tumors

... potential role the marker may play when the tumor spreads or comes back after treatment. The study, ÒAttractin is elevated in the cerebrospinal fluid of patients with malignant astrocytoma and mediates glioma cell migration," is published in the November issue of Clinical Cancer Research. The biomarker,...

Nanoscale microscope sheds first light on gene repair

...s may determine the boundaries of where gamma-H2AX spreads in response to a break. "The clusters may provide a platform for the immediate and robust response observed following DNA damage," said Bewersdorf. "Moving forward, we will analyze the localization of the H2AX clusters relative to other nuclear c...

Air travel and flu: Post-9/11 restrictions delayed start of season

... flu', it is important to know more about how flu spreads round the world. Might airline travel play a role in the spread of the infection across large distances? If so, reducing or restricting air travel might be useful in the early stages of a serious global epidemic. Research at the Children's Hospital B...

Pattern of human Ebola outbreaks linked to wildlife and climate

...ered questions about Ebola including how the virus spreads within and between mammal species. "Our study provides more pieces of the puzzle, but at the same time it is enlarging the puzzle," she noted. Richard Barnes from the Environmental Sciences Research Center at Anglia Ruskin University, Cambridge...

Edge density key to controlling gypsy moth spread

...he gypsy moth adult is flightless and usually only spreads a short distance beyond infestation boundaries. External colonies occur when moths hitch a ride on vehicles or other items relocated by people. Without an Allee effect, these colonies would establish, but because gypsy moths exhibit an Allee effect,...

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