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Tag: "fewer" at biology news

Weizmann Institute scientists discover a molecular security mechanism for keeping mutations in check

...y's solution to minimizing mutations is to have no fewer than ten different "careless" enzymes. Although this may seem paradoxical ?intuitively, more careless enzymes should mean more mutations ?each of these enzymes is tailored to deal with certain specifics types of DNA damage. This specialization is wha...

Acid rain causing decline in sugar maples, say researchers

...ugar maples. In acidic soils, sugar maples produce fewer seedlings that survive and mature, and more adult trees die, the researchers found. They drew these conclusions after adding nutrients to soil in a test plot and reproducing the favorable soil conditions that existed prior to 20th century industrial ...

Gene therapy prevents the onset of diabetic symptoms in mice

...ugar maples. In acidic soils, sugar maples produce fewer seedlings that survive and mature, and more adult trees die, the researchers found. They drew these conclusions after adding nutrients to soil in a test plot and reproducing the favorable soil conditions that existed prior to 20th century industrial ...

Combination therapy shows promising results in patients with advanced lung cancer

... healthy cells alone, therapies like Tarceva cause fewer side effects than conventional therapies such as chemotherapy, which targets all fast growing cells and often results in debilitating side effects. Reckamp characterized the side effects seen with the combination therapy as minor. The next step is a...

Biotech cotton provides same yield with fewer pesticides

Arizona farmers receive the same yield/acre, use fewer chemical insecticides and maintain insect biodiver...tton. However, growers that planted Bt cotton used fewer applications of broad-spectrum insecticides. As a result, growers ended up with similar yields/acre ...

Cougar predation key to ecosystem health

...t it still has an intact cougar population and far fewer mule deer. In contrast to Zion Canyon, streambanks in this watershed have nearly 50 times more young cottonwood trees as well as thriving populations of flowers, lizards, butterflies, and several species of water-loving plants that help stabilize str...

High dopamine transporter levels not correlated with ADHD

...cans revealed that ADHD subjects had significantly fewer dopamine transporters than control subjects in the nucleus accumbens, an area of the ventral striatum that is one of the main reward centers in the brain. In a dorsal striatum region known as the putamen, which plays an important role in habits and i...

'Mindless autopilot' drives people to underestimate food decisions

...ckage. People served a snack mix in a bowl ate 134 fewer calories than those eating straight from the bag. Bank your calories: Skip the appetizers if you know you want to save room -- and enjoy -- the upcoming dessert. You'll also be more accurate at estimating the number of calories you consumed. ...

Complexity constrains evolution of human brain genes

...ely on tissue-specific genes, where there would be fewer conflicting requirements," says Wu. "For example, genes expressed only in male reproductive tissues have evolved very rapidly." Brains, however, "are intriguing in this respect," Wu says. Genes that are expressed only in the brain evolved more sl...

For super-obese patients, duodenal switch beats gastric bypass

...ny other group. When the term was coined in 1987, fewer than one in 2,000 adults in the United States met the criteria of a BMI greater than 50. (A normal BMI is 18.5 to 24.9. From 25 to 29.9 is considered overweight. Thirty or above is considered obese; 40 and above is morbidly obese.) The prevalence ...

Hard-wiring the fruit fly's visual system

...on for the findings is that the fruit fly has many fewer neurons than vertebrates, and the system can therefore just rely on the genetic components in flies," said Bellen. "In vertebrates, complexity is added because of the challenge of millions of neurons having to make billions of precise connections. ...

Insulin receptor stops progression of Alzheimer's disease

..., and they decrease oxidative stress, resulting in fewer lesions in the brain. "If the diagnosis is suspected or patients are in the early phases of AD, there's a good possibility they could get treatment that will help them. It's possible that in the moderate phase, treatment will also help, but more wo...

Serengeti patrols cut poaching of buffalo, elephants, rhinos

...ompared to the mid-1980s when there might be 60 or fewer patrols a year," Hilborn says. They tell us, he says, by increasing in abundance, something that can measured using aerial surveys. It's been impossible to actually count the number of animals that are poached because poaching is illegal and most ...

Researchers discover new gene responsible for brittle bone disease

...s) were found to make thicker collagen fibers, but fewer of them, resulting in weaker bone. Boyce and his group in the Center for Musculoskeletal Research at the Medical Center characterized the skeletal abnormalities in the genetically engineered mice and carried out studies of bone cells from the mice...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

... fetal heart rate pattern was abnormal, there were fewer Caesarean deliveries than normal. But there was a higher-than-normal rate of Caesarean deliveries from cases involving dystocia--failure of the baby to move down the birth canal. (Dystocia can result from such causes as the baby being improperly po...

More kidney cancer is detected and treated early, yet death rate rises

...rgery for kidney cancer, this trend has not led to fewer people dying. "With increased early detection and treatment of small tumors, we would expect to see a decrease in mortality associated with kidney cancer," says senior author Brent K. Hollenbeck, M.D., assistant professor of urology at the U-M Medi...

Professors to develop hand-held pathogen testing device

...there also will be applications in countries where fewer resources are available for drinking water safety," Hashsham said. Looking toward the future, Hashsham has been in touch with several organizations that might be interested in the device. AquaBioChip LLC, a Lansing-based company formed by the same...

Dragonfly's metabolic disease provides clues about human obesity

...m of metabolic syndrome is that muscles metabolize fewer lipids. The researchers also found that unused lipids accumulated in the dragonflies' thorax. Humans with metabolic disease tend to accumulate fat around skeletal muscle tissue. Marden and Schilder's experiments also found the hemolymph carboh...

Stem cell activity deciphered in the aging brain

...covered why the aging brain produces progressively fewer new nerve cells in its learning and memory center....nd others had demonstrated that as the brain ages, fewer new nerve cells, or neurons, are born in the hippocampus, the brain's learning and memory center. In...

First-time analysis reveals millions of Europeans left at risk from influenza

...tment, 796,743 less hospital admissions and 68,537 fewer influenza related deaths for all EU-25 countries Implementing a 100% vaccination rate programme for all risk groups in France, Germany, Italy, Spain and UK would require an additional 1.52 billion Euro but this would result in an estimated savings...

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