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Tag: "were" at biology news

Chronic fatigue syndrome impairs a person's slow wave activity during sleep

...entical twins discordant for CFS. Analyses, which were restricted to the first four non-REM periods each night in order to show comparability, revealed that SWA, or other sleep EEG measures, did not differ between the CFS and healthy twins during a regular night's sleep. According to Armitage, it was on...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...zing these estimates, they determined that lizards were consistently more than ten times more abundant on ...ompetition pressures. As a result, island animals were able to reach exceptionally high densities. In their study, Jetz and Buckley confirmed that reduc...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...hat is unable to make ST. Without ST, the bacteria were less virulent. The researchers then used a techniq... producing the phenoloxidase enzyme. These insects were more susceptible to regular Photorhabdus bacteria. But when the two were combined, it was found t...

US control strategies may make flu epidemics worse, UCLA study shows

... such a health crisis could be reduced if programs were to provide several years of free vaccinations to individuals who pay for only one year. Interestingly, however, some incentive programs could have the opposite effect. Providing free vaccinations for entire families, for example, could actually incre...

Vaccine prevents prion disease in mice

... strain of Salmonella. For the study, the mice were orally vaccinated with a safe, attenuated Salmonel...rain, which expressed the prion protein. Then they were divided into two groups ?those who had high levels of antibodies in their blood and thus responded w...

Keeping the immune system from starting a 'food fight'

...f chronic metabolic disease, they said. "Humans were not meant to deal with little to no exercise and a constant bombardment of nutrients," said Gökhan Hotamisligil of the Harvard School of Public Health of his team’s findings. "If we could find ways to strengthen STAMP2 or prevent its suppression, the...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

...lso, the researchers found that when SNO compounds were administered to mice they could prevent the receptors from being "turned off" by the drugs. The researchers said these findings, if confirmed in humans, open up new avenues for the development of non-desensitizing drugs not only for heart failure ...

Maggots rid patients of MRSA

...ae to treat 13 diabetic patients whose foot ulcers were contaminated with MRSA and found all but one were cured within a mean period of three weeks, much quicker than the 28-week duration for the convention...

Alien plants attack using 'resource conservation' as weapon, researchers say

... use to the rate of photosynthesis, the scientists were able to determine the resource-use efficiency for each plant. "Invasive plants were more efficient on short-time scales, but overall there was no difference in the long term," Funk sai...

First clinical trial of gene therapy for childhood blindness

...th the defect was restored to the extent that they were able to walk through a maze without difficulty; something they could not do before the treatment. As this trial is the first to treat an eye disease using administration of gene therapy vectors to human retinas, the team have carried out extensive pr...

Corals -- More complex than you?

...nst disease. In fact, it is possible some of these were pioneered by corals. Corals are among the simpl...ment. "Four years ago researchers in this field were predicting that coral would be found to have about 10,000 genes ?but we’ve found almost that many al...

8 plants from South Africa may hold potential for treating high blood pressure

...ty or wild garlic Dried leaves from the plants were ground and used to prepare organic and acqueous ex... the assay. At least three separate determinations were conducted for each test compound. A tannin test was only conducted on those plant extracts that exh...

A frown or a smile? Children with autism can't discern

...nal magnetic resonance imaging (fMRI), both groups were shown a series of faces depicting angry, fearful, ...d neutral expressions. In half the faces, the eyes were averted; with the other half, the faces stared back at the children. With the typically developin...

Traumas like Sept. 11 make brains more reactive to fear

... brain study, even people who seemed resilient but were close to the World Trade Center when the twin towe... more reactive to emotional stimuli than those who were more than 200 miles away. That is the finding of a new Cornell study that excluded people who did n...

Brain's white matter -- More 'talkative' than once thought

...ther in more ways than previously thought. “We were surprised to see these nerve axons talking to othe...the two brain hemispheres. To their surprise, OPCs were found to have electrical signals produced by the neurotransmitter glutamate, similar to the signals ...

An ancient bathtub ring of mammoth fossils

...etons of Mammathus columbi, the Columbian mammoth, were deposited in the hillsides of what are now the Yak...larger floods and deeper waters, up to 1,200 feet, were exceptions rather than the rule. Full skeletons found at lower elevations were likely buried soon...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

...2001 when letters containing the bacteria's spores were sent through the mail. The UF findings, published last week in the EMBO Journal, may lead to quicker diagnoses for anthrax victims. The disease causes flu-like symptoms that can take weeks to develop, according to the Centers for Disease Control a...

Premature births may be linked to seasonal levels of pesticides and nitrates in surface water

...ticides and nitrates measurements in surface water were highest (April-July) and were lowest when nitrates and pesticides were lowest (Aug.-Sept.). More than 27 million U.S. live b...

Scientists: As rainfall changes, tropical plants may acclimate

...eakala, a volcano on the island of Maui. The sites were ideal because they share the same species, elevations and soils but have vastly different rainfall. The wettest rainforest sites receive an astonishing 196 inches of rain annually, while the driest sites in this study get about 79 inches. "That's ...

Newborn neurons like to hang with the 'in' crowd

...ew neurons. Newly born neurons infected with virus were marked by a fluorescent dye enabling the researchers to follow their fate over time as they tried to get accepted into the existing circuitry. With the help of a whole arsenal of high-tech imaging technology and the electron tomography expertise o...

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