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Tag: "delayed" at biology news

Pesticides choke pathway for nature to produce nitrogen for crops

...isruption results in lower yields or significantly delayed growth. In a paper appearing online this week ahead of the regular publication by the Proceedings of the National Academy of Sciences (PNAS), the five-member team reports that agrichemicals bind to and block connections to specific receptors (NodD...

Clot-dissolving agent may be beneficial in treatment of severe frostbite

...ue rewarming, prolonged watchful waiting and often delayed amputation,” the authors write. “While many other areas of burns, trauma and critical care have advanced significantly in their treatment modalities, the saying ‘Frostbite in January, amputate in July’ is still relevant today.” Kevin J. Bruen, M.D...

Machine preservation may promote more organ sharing

...ent reduction in the rates of viral infections and delayed graft function, which is the inability of the kidneys to start working on their own without dialysis. "The routine use of machine preservation for ECD kidneys may lower hospital costs by reducing complications," said Stratta. "In addition, it may ...

Bioluminescence at the service of a novel cerebral imaging technique

... Drosophila) induces a secondary response which is delayed by about 10 to 15 minutes at the level of neuronal axonal projections. It is therefore probable that this new response (hitherto totally unsuspected) intervenes in learning and memory phenomena. Furthermore, using this imaging technique, it has...

Some caterpillers just don't want to grow up

...ms principally capable to explain the evolution of delayed development," Dr. Thomas Hovestadt, the project le...n the nest are a prerequisite for the evolution of delayed development, but cannot explain it on their own. In contrast, sibling competition and "segregation" ...

How to manage forests in hurricane impact zones

...ill require monitoring for up to 5 years to detect delayed mortality or the onset of insect infestations or diseases," says Stanturf. "Beyond the initial flurry of cleanup and salvage logging, the recovery process will take many years, and require the investment of time and resources. The recovery period is ...

Neural bottleneck found that thwarts multi-tasking

...leted," Dux said. "Neural activity seemed to be delayed for the second task when the two tasks were presented nearly simultaneously ?within 300 milliseconds of each other," Marois said. "If individuals have a second or more between tasks, we did not see this delay. "This temporal delay is the essence o...

Study of planarians offers insight into germ cell development

...germ cells until several days after hatching. This delayed initiation of germ cell growth is called inductive specification, and is common to mammals and a number of other animals. Graduate student Yuying Wang and the other team members were able to show that nanos is essential for inductive specification...

The effects of smoking on fractures and ligament injuries

...rogenesis) during healing. They found that smoking delayed fracture healing and that it began at the early st...y found that mice exposed to smoke had impaired or delayed extracellular matrix development, shown by lower collagen type I gene expression, one week after inj...

Global changes alter the timing of plant growth, scientists say

...mulating future conditions. But plant growth was delayed by elevated carbon dioxide, consistent with the fact that grasses--which make up the majority of plants in this system--were flowering later. "Unless the growing season is extended, slower plant growth under elevated carbon dioxide could reduce the o...

Scientists discover way to block growth of prostate cancer cells

...tment significantly increased overall survival and delayed time to prostate tumour development. In repeat experiments, between 50-60% of mice treated with MDL survived ten to twelve weeks longer than the untreated control group. "To the best of our knowledge, this is the first report of a specific enzyme...

Lab-on-a-chip could speed up treatment of drug-resistant pneumonia

...tant infections with targeted antibiotics is often delayed by the need to identify bacterial strains by growing them in culture first. At this week's AVS 53rd International Symposium & Exhibition in San Francisco, Michael Lochhead, a bioengineer at the Denver biotechnology company Accelr8, described a ne...

Brain protein improves stroke symptoms in rats, even when injected after 3 days

... of the stroke. The study also shows that regular, delayed injections of G-CSF, starting up to three days after experimental stroke, are effective in restoring motor functions in rats. G-CSF is known to improve recovery after a stroke, and it is currently being tested for use in humans. The BMC Biology stu...

Zinc plays important role in brain circuitry

...ions. The resulting mutant mice showed tremors, delayed ability to right themselves when turned over, abnormal gait, altered transmission of visual signals, and an enhanced startle response to sudden noise. Electrophysiological studies of the mutant animals' brain and spinal neurons showed significant ...

When nerve cells can't make contact

...ain symptoms of this developmental malfunction are delayed language development or no language development at all, disturbed social behaviour and repetitive behaviour patterns. In many patients, the disease is accompanied by mental disability. Autistic individuals exhibiting high intelligence or outstanding ...

Bacterial protein shows promise in treating intestinal parasites

...re at particular risk for anemia, malnutrition and delayed growth. The UCSD-Yale team found that a protein produced by the bacterium Bacillus thuringiensis, or Bt, given orally to laboratory hamsters infected with hookworms was as effective in eliminating the parasites, curing anemia and restoring weight ...

Vaccine combined with short-term postexposure antibiotics protects monkeys from inhalational anthrax

...een discontinued can cause disease and death. This delayed germination necessitates prolonged use of antibiotics after an inhalational exposure. Animal experiments have confirmed the prolonged persistence of spores and incubation period after aerosol exposure. In one study, rhesus macaques were protected d...

'Smart' genetic therapy helps the body to heal itself

...f the code can be restored and the progress of DMD delayed or even stopped. In collaboration with the Dutch biotech company Prosensa BV, and supported by the national and international Duchenne Parent Projects, and governmental and charity funds, Dr. J. van Deutekom and her team will soon start a clinical t...

With cochlear implants, earlier use leads to better speech

...and potential treatments. Implantation also may be delayed to make certain an infant's deafness has not been misdiagnosed. Even when deafness is confirmed, the idea of head surgery for their baby makes many parents hesitate. And they may be daunted by the fact that a cochlear implant is forever -- the devi...

Alaska seal pup diet may hold key to decline of population

...alls below average levels may be at higher risk of delayed sexual maturation or death, even if they get enough fat in their diets later on, according to a new study sponsored by The American Physiological Society and presented at Experimental Biology 2006. The study found that harbor seals pups that were he...

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