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Tag: "highly" at biology news

Herpes infection may be symbiotic, help beat back some bacteria

...ously used vaccination to eliminate the deadly and highly contagious smallpox virus. Vaccines are currently in use or in clinical trials for several disease-causing strains of herpes. Human herpes viruses include oral and genital herpes, the chickenpox virus, cytomegalovirus, Epstein-Barr virus and Kapos...

Hexavalent chromium in drinking water causes cancer in lab animals

...igher than what humans could consume from the most highly contaminated water sources identified in California. The researchers report finding significant increases in tumors at sites where tumors are rarely seen in laboratory animals. Male and female rats had malignant tumors in the oral cavity. The s...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

...idant. Antioxidants protect against free radicals, highly reactive atoms and molecules that can damage DNA and other important molecules in the cell. Since free radical damage increases with age, there has been a long-held suspicion in the scientific community that free radical damage could increase the ris...

In Iran, cheetahs collared for the first time

... System (GPS) collars, marking the first time this highly endangered population of big cats can be tracked by conservationists. Once found throughout the continent, Asiatic cheetahs now live only in extremely arid habitat on the edges of Iran's Kavir Desert. WCS's government partner in Iran, the Department...

York mathematician probes geometric route to combat viruses

...evelop new anti-viral strategies. Viruses have highly symmetrical external shells formed from proteins that encapsulate the viral genome. Dr Twarock has developed a method for encoding the structures of these protein shells that pinpoint the locations of the proteins and the bonds between them. With col...

NIAID expands capability for influenza research and surveillance

...ated by NIAID after the 1997 Hong Kong outbreak of highly pathogenic avian influenza in humans. Under this program, researchers conducted surveillance of influenza viruses in aquatic birds and live bird markets in Hong Kong, which helped shed light on the natural history of flu viruses. Further, scientists ...

Researchers wake up viruses inside tumors to image and then destroy cancers

...e the tumors with virus in them." The method is highly sensitive, he says: as few as five percent of the cells within the tumor mass needed to be induced into the lytic cycle in order to be detected. Not only can FIAU light up the tumors, it can also potentially kill them, Pomper says. For imaging pur...

Discovery of new cave millipedes casts light on Arizona cave ecology

... (or gonopods) on the male specimens. Gonopods are highly modified legs used to transfer spermatophores (packets of sperm) to the females during reproduction. For the north rim species, Voyles explained that the discovery will result in the two caves becoming listed as 'significant' under the Federal Cav...

Fish extinctions alter critical nutrients in water, study shows

...plex ecosystems, especially those involving large, highly mobile fish, are almost impossible to carry out in the wild, but new methods are helping researchers better understand these systems. "Computer simulations provide a means to assess patterns of species loss in a system in which we just cannot do co...

It's never too late to get it back! Aging interrupted

...onger if they simply consume fewer calories, but a highly nutritious diet. Because people are not very good at dieting, Dr. Spindler and his colleagues would like to identify drugs which can produce the same beneficial health and longevity effects without the low calorie diet. The problem is to find a way...

Natural antibiotics yield secrets to atom-level imaging technique

...ological functions," Ramamoorthy said. The work is highly interdisciplinary, involving not only Ramamoorthy's lab and several other groups in the Chemistry Department, but also researchers from the College of Engineering, the School of Dentistry, the Medical School and the Biophysics Research Division, as w...

Studies force new view on biology of flavonoids

...urnal. "What we now know is that flavonoids are highly metabolized, which alters their chemical structure and diminishes their ability to function as an antioxidant," said Balz Frei, professor and director of the Linus Pauling Institute. "The body sees them as foreign compounds and modifies them for rapi...

Scientists identify pancreatic cancer stem cells

...rcent of the time," Simeone said. "These cells are highly tumorigenic, which reflects the biology of this ca...cer." Additionally, the tumors derived from the highly tumorigenic pancreatic cancer cells "appeared remarkably similar to the appearance of tumors taken d...

Stanford-led study closes in on genes that may predispose some people to severe depression

...y, and an additional 88 in the second. "We found highly significant evidence for linkage to depression in this particular part of chromosome 15," he said. "This is one of the strongest genetic linkage findings for depression so far." "It's an important paper," said Peter McGuffin, MD, dean of the I...

Sandia researchers take new approach to studying how cells respond to pathogens

...ll activity. The microfluidic platform is fast and highly parallel and can perform hundreds of measurements ...fety Level 3 or 4 labs to study immune response to highly pathogenic organisms. He notes the integrated platform, biological reagents and computational models...

Ancient genes used to produce salt-tolerant wheat

...." The project began when the CSIRO team used a highly accurate selection method -- based on their unders...ually produce wheats able, like barley, to grow in highly saline soils," Dr Munns says. Over six per cent of the world's arable land is affected by salinit...

A 'traffic light' for neurons means 'go' for improving brain research

...Zerhouni. "The work is also a prime example of the highly innovative approaches to major challenges in biomedical research that we support through the NIH Director's Pioneer Award program." Karl Deisseroth, an assistant professor of bioengineering and of psychiatry who led the research group that authore...

Mechanism of nicotine's learning effects explored

While nicotine is highly addictive, researchers have also shown the drug to enhance learning and memory—a property that has launched efforts to develop nicotine-like drugs to treat cognitive deficits in Alzheimer’s and Parkinson’s diseases, schizophrenia, and attention-defic...

Glucose triggers brain cell death in rats after hypoglycemic coma

...Oxidative stress occurs when cells are poisoned by highly reactive forms of oxygen. Previously, it had been assumed that oxidative stress in neurons was initiated primarily by mitochondria, which process oxygen for energy within cells. The paper appears in the April 2007 issue of the Journal of Clinical...

Study shows isolation of stem cells may lead to a treatment for hearing loss

...ching adulthood. In most cases, the target is the highly specialized hair cells. Docked inside the spiral ...he human cochlea are ~15,000 hair cells, which are highly specialized neuroepithelial cells that enable us to hear a violin or a whisper. These hair cells di...

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