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Tag: "average" at biology news

MRSA toxin acquitted: Study clears suspected key to severe bacterial illness

...tor Frank DeLeo, Ph.D., of RML. "Unexpectedly, the average abscess volume in mice infected with strains absent the PVL was slightly greater than those containing the toxin. The strong association between PVL and CA-MRSA makes the toxin an excellent marker to track community strains, but the assumption that i...

New approach to BSE successful in lab

...roduce siRNAs. ‘Whereas the untreated mice died on average after 165 days, the mice which had been treated li... almost the same time as the control mice, i.e. on average after 170 days. However, if the majority of the brain cells were protected by siRNA, the mice surviv...

NHGRI aims to make DNA sequencing faster, more cost effective

...lopment are needed if they are to be useful to the average researcher or physician," said Jeffery Schloss, Ph.D., NHGRI's program director for technology development. "We look forward to seeing which of these technologies fulfill their promise and achieve the quantum leaps that are needed to take DNA sequenc...

Eating protein boosts hormone that staves off hunger

...f our hunter-gatherer ancestors," she added. The average Western diet derives 49% of energy intake from carbohydrate, 35% from fat, and 16% from protein, Batterham said. That differs considerably from the diet of hunter-gatherers, who ate as much as twice the amount of protein. Batterham cautioned, howev...

PET imaging shows young smokers quick benefit of quitting

...er than smoking). The young smokers, who smoked an average of 20 cigarettes a day, agreed to stop for at least six months. Myocardial (heart) blood flow was measured both at rest and during stimulation induced by a cold pressor test by using PET with the oxygen tracer called 15O-water. Additional research is...

Transmission of antibiotic-resistant bacteria linked to previous intensive care unit room occupants

...ion of MRSA and 7,806 for acquisition of VRE. The average patient age was 61 years, and 58 percent were male. Fourteen percent of these ICU patients stayed in rooms in which the prior occupant had MRSA and 13 percent stayed in rooms in which the prior occupant had VRE. Those who stayed in rooms after pati...

Fast test for low blood flow in dogs detects early heart trouble

...ology research fellow at Hopkins, says it takes on average between 45 minutes to one hour to perform another common diagnostic procedure, a cardiac stress test with exercise and ultrasound, to assess pumping function and blood flow. "Even when patients have a normal exercise stress test, they may still b...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

...n the sulfur and methane-rich environments--are on average older than the marine mollusk community as a whole...about 55 to 34 million years ago. By contrast, the average age of first appearances for all marine mollusks occurred in the Oligocene epoch, about 34 to 24 mil...

Mapping the mouse genome

...irmed results seen previously for humans, that the average autosomal (non-sex) chromosomes had a higher recombination rate for females than males. Observing where there was a particularly high, or low, rate of recombination, the authors identified "jungles" and "deserts." They looked for sequence motifs t...

End of deforestation in view? Experts advance new way to size up global forest resources

...the density of its forests has risen, producing an average 1.6% annual increase in the volume of growing stock. "China has experienced falling forest density in many parts of the country since 1949, but its area of forested land has steadily risen," notes ecologist Dr. Fang of Beijing. "The net result: a...

HIV/AIDS linked to extensively drug resistant TB

...53 patients with both XDR TB and HIV died, with an average survival of 16 days. "This is an issue of grave worldwide importance," said Friedland. "MDR and XDR carry the danger of blunting or reversing the success of TB programs and the roll-out of anti-retroviral therapies for HIV where they are desperate...

Bad blood between boys and girls

...and abortions, and the sex of the newborn. On average worldwide, for every three children born, only one is a boy. Kankova's team found that Toxoplasma positive mothers gave birth to more boys than did Toxoplasma negative women. The probability of a male birth also increased, up to two boys in three c...

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

... the national peak date was within two days of the average date ?February 17. Flu spread more slowly in years when the number of domestic air travelers was lower. However, the most striking finding was that the peak date of the US flu season following September 11, 2001 was delayed, by 13 days, to March 2. F...

Plant-derived molecules, genetic manipulation point to future chemoprevention methods

...ey found that mice with normal IGF-1 levels had an average of 13 colon tumors, but the IGF-deficient mice had only 7.2 tumors on average. In addition, the colon tumors in IGF-deficient mice were less likely to be found in the proximal colon; 25 percent of tumors were in the proximal colon of deficient mice, ...

SARS: No evidence that any of the treatments worked

...d 117 patients and showed that in this setting the average cost to the health system was US$3,355, and US$837 to the patients. The authors calculated that the mean cost per disability-adjusted life year (DALY) gained by the DOTS-Plus project was US$242 (range US$85 to US$426). In a related perspective, Paul ...

U-M researchers use nanoparticles to target brain cancer

...ofrin incorporated into a nanoparticle survived an average of 33 days. Forty percent of the rats remained disease-free six months after treatment. The researchers also found twice the amount of the contrast agent at the tumor site when using targeted nanoparticles, suggesting the nanoparticles were attrac...

Amateur boxing linked to brain cell injury

...p) from 14 amateur boxers (11 men and three women, average age 22 years) seven to 10 days after a bout and ag...ter a boxing match, the group of boxers had higher average levels of chemicals known as neurofilament light protein and total tau than they did three months la...

New engineered drug may offer prolonged arthritis relief

...sability, the researchers said, adding that as the average age of the population continues to rise, the incidence of osteoarthritis will increase. Osteoarthritis had been attributed primarily to the gradual wear and tear of joint surfaces. More recently, however, scientists have discovered that inflammatio...

New dyslexia theory blames 'noise'

... from South Bank University in the U.K. that found average noise levels in primary classrooms to be as high as near a busy intersection. "What Sperling and Lu's data suggest is that the mechanism responsible for faulty phonological development is quite general and has to do with attention in a broad sens...

Wild tigers need cat food

... in India’s Nagarahole National Park found that an average of 23 percent of the park’s tigers either move away or die each year from either naturally or from poaching outside of the park, yet total numbers remained high. "This study shows that even well-protected wild tiger populations have naturally high...

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