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Tag: "barrier" at biology news

On a wing and a prayer - Alaska researchers seek clues to bird flu

...ing evidence that this strain can jump the species barrier and cause severe disease and mortality in humans. A second and even greater concern, according to the World Health Organization, is the possibility that the present situation could give rise to an influenza pandemic in humans akin to the 1918 "Spanis...

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

...eases, now available online. Crossing the species barrier is an important step in the development of a flu virus with pandemic potential. Previous studies have focused on the ability of highly pathogenic strains, such as H5N1 "bird flu" circulating in Asia, to spread from poultry to humans. The new study sh...

Eating, body weight regulated by specific neurons

...eases, now available online. Crossing the species barrier is an important step in the development of a flu virus with pandemic potential. Previous studies have focused on the ability of highly pathogenic strains, such as H5N1 "bird flu" circulating in Asia, to spread from poultry to humans. The new study sh...

First Whole Genome Map of Genetic Variability in Parkinson’s Disease

...eases, now available online. Crossing the species barrier is an important step in the development of a flu virus with pandemic potential. Previous studies have focused on the ability of highly pathogenic strains, such as H5N1 "bird flu" circulating in Asia, to spread from poultry to humans. The new study sh...

Transplanting Animal Organs Could Soon Be A Reality

...eases, now available online. Crossing the species barrier is an important step in the development of a flu virus with pandemic potential. Previous studies have focused on the ability of highly pathogenic strains, such as H5N1 "bird flu" circulating in Asia, to spread from poultry to humans. The new study sh...

Less virulent strains of avian influenza can infect humans

...eases, now available online. Crossing the species barrier is an important step in the development of a flu virus with pandemic potential. Previous studies have focused on the ability of highly pathogenic strains, such as H5N1 "bird flu" circulating in Asia, to spread from poultry to humans. The new study sh...

Agricultural antibiotic use contributes to 'super-bugs' in humans

...nally survive the formidable but imperfect gastric barrier to colonize the gut - which in turn may transmit the resistant bacteria to humans. Smith and colleagues say that the transmission of antibiotic resistant bacteria from animal to human populations is difficult to measure, as it is "the product of a v...

New partnership to clear landmines for African Elephants

...bia because of the landmines that create a manmade barrier separating the Chobe region from the upper Cuando and Zambezi Rivers. The ranging area of these elephants within the proposed multi-country Kavango Zambezi Transfrontier Conservation Area (Kaza TFCA) is reduced to a fraction by the buried ordnance. ...

Researchers discover new tumor defense system

... lymphocytes to recognize the tumor and a physical barrier separating the lymphocytes and the tumor. Now, Dr. Alan M. Kleinfeld and Clifford Okada of the Torrey Pines Institute for Molecular Studies in San Diego, CA, have added another reason to this list. They discovered that tumors secrete fatty acids whi...

Genes linked to treatment resistance in children with leukemia

...ar impact on how drugs penetrate the "blood-brain" barrier that protects the CNS. For patients in the high-risk arm, the VDR FokI genotype was found to be prognostic for CNS relapse, especially when combined with a VDR intron 8 genotype. In the low-risk group, the TYMS 3/3 genotype was a risk factor. For ch...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

...ctively patrolled by worker ants. A sticky insect barrier was applied to one cedar sapling to exclude ants, while the other sapling was left untreated. The researchers planted two additional saplings--one treated, one untreated--about 150 feet outside of each garden but within the primary rainforest. The r...

Unweaving amyloid fibers to solve prion puzzles

...ight as to why some prions can't cross the species barrier while others can--as they have with mad cows and humans.," says Lindquist. That gap has also been observed between other species, she notes: "In fact, some type of prions from infected hamsters can't make the species jump into mice, while others do, ...

Aloe vera coating may prolong freshness, safety of fruits and vegetables

...lysaccharides, the gel appears to act as a natural barrier to moisture and oxygen, which can speed food deterioration. But the gel also enhances food safety, the scientists say. Based on previous studies by others, Aloe vera gel appears to contain various antibiotic and antifungal compounds that can potent...

Researchers identify genes associated with lung transplant rejection

... body. "For lung transplant patients, the biggest barrier to long-term survival is control of rejection," says principal investigator George Caughey, MD, head of Pulmonary and Critical Care Medicine at SFVAMC. "If we know rejection is occurring, we can adjust the patient's medication to try and prevent it. ...

UF researchers kill resistant bugs one bandage at a time

... Popular silver dressings work well as a bacterial barrier but release ions that allow resistance to develop, Schultz said. The structure of the microbicidal coating and the complexity of the process make it nearly impossible for bacteria to become resistant to it, Schultz said. The coating comprises thousa...

Genome Sequence for Haemophilus Influenzae Completed

...e otter's sebaceous glands, thus providing another barrier to water. The fins of the underhairs are also aligned away from the body, which is consistent with the direction in which otters run their paws through their hair during this self-grooming, thereby ensuring that their claws do not get caught on the f...

Otter adaptations: How do otters remain sleek and warm

...e otter's sebaceous glands, thus providing another barrier to water. The fins of the underhairs are also aligned away from the body, which is consistent with the direction in which otters run their paws through their hair during this self-grooming, thereby ensuring that their claws do not get caught on the f...

Primate virus jumps species barrier to humans for first time in Asia

...to other primate-borne viruses jumping the species barrier and causing human disease. "The issue of primate-...munodeficiency virus (SIV), and jumped the species barrier to humans when African bushmeat hunters came into contact with blood from infected animals. Though ...

Beyond genes: Lipid helps cell wall protein fold into proper shape

...ws that phospholipids, which make up the permeable barrier of cell membranes, play a direct role in the folding of membrane proteins ?proteins that penetrate the membrane or bind to either side of it. "What we've demonstrated again is that it's not just a membrane protein's genetically determined sequence t...

Slipping past the blood brain barrier: Research shows potential treatment for brain cancer

...stem, an extra guardian located at the blood brain barrier that usually keeps anticancer drugs out of the bra... into the brain to treat cancer. "The blood brain barrier is set up to very carefully patrol what it lets into the brain and what it keeps out. It makes these...

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