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Tag: "having" at biology news

Cigarette smoking impedes tendon-to-bone healing

...s resulted from nicotine exposure rather than from having a pump implanted beneath the skin. In the rats that got nicotine, the pumps maintained nicotine levels in the bloodstream about equivalent to smoking a pack to a pack and a half of cigarettes per day. "So these would have been heavy smokers," Gala...

Critical hearing gene helps send auditory messages to brain

...itter release from their inner hair cells, despite having an apparently normal "ribbon synapse" and calcium flow. The findings led the researchers to conclude that "otoferlin is essential for a late step of [neurotransmitter release] and may act as the major [calcium] sensor triggering membrane fusion at ...

Temperament linked to onset of cancer and early death in female rats

...ated again during middle age with the fearful rats having irregular cycles more often. The aging affects on reproduction were also accelerated in the fearful rats. In an earlier study, University of Chicago researchers looked at the lifespan of male rats and found that the adventuresome males lived longer...

Researchers discover new gene responsible for brittle bone disease

...d one normal gene, they have one-in-four chance of having a child with osteogenesis imperfecta. Funding for the research came from the National Institutes of Health, the Baylor College of Medicine Developmental Disabilities Research Center, and the Shriners of North America. Others institutes participati...

Hard-wiring the fruit fly's visual system

...ed because of the challenge of millions of neurons having to make billions of precise connections. You have to work with a gross topological map first, and neuronal activity refines this map later," he said. The study adds to an ongoing debate about the extent to which brain wiring can be genetically pro...

Study suggests evolutionary link between diet, brain size in orangutans

...matran populations," Taylor said. In addition to having physical differences, Bornean orangs also inhabit areas that vary more ecologically than do comparative orangutan habitats on Sumatra. "The eastern parts of Borneo suffer more from El Niño-related droughts than parts of western Borneo," the scientist...

Ocean temperature predicts spread of marine species

...le. "We can apply this rule to animals without having to go out and measure every species," O'Connor said. "Our general model gives us a powerful new way to study larval movement with knowledge about ocean temperature, which is much easier to come by. With models such as this, we can see what large-scal...

'Mindless autopilot' drives people to underestimate food decisions

...eat it in a small portion. To eat less without having to think about it, use the rule of two: Pick two of the following three: appetizer, a drink or a dessert. Use the "half" rule of thumb: Fill half your plate with vegetables, the other half with protein and starch. Think "back": Keep tempting ...

Minorities, uninsured less likely to receive care at high-volume hospitals

...ith patients at high-volume hospitals consistently having better outcomes. It appears there are important differences in the racial and socioeconomic status of patients who receive care at high- and low-volume hospitals, according to background information in the article. These differences may affect the ab...

Second opinion yields treatment changes for half of patients

...ad already been diagnosed with breast cancer after having undergone initial evaluation, breast imaging and biopsy, and they already had a treatment recommendation from another hospital or care provider. Overall, 52 percent of the patients evaluated had one or more changes in their recommendations for sur...

Plants' role in global warming re-examined

... change over the next several decades depends upon having a thorough understanding of multiple interacting factors, including plant respiration. "The fact is that plants adapt to higher temperatures and their levels of respiration adjust downward." While some previous climate-carbon simulations have inclu...

Increase in carbon dioxide emissions accelerating

... is accelerating, signifying that fossil fuels are having an impact on greenhouse gas concentrations in a way we haven't seen in the past." Drs Raupach and Fraser presented their latest findings last week during the Annual Science Meeting at Tasmania's Cape Grim Baseline Air Pollution Station, which is m...

Beauty and the brain

...mation of incipient smiles or frowns) and, without having to rely on reported ratings, confirmed a genuine positive response to those images that were closest to prototype. "It seems you don't need to postulate an unconscious calculator of mate value or any other 'programmed-brain' argument to explain wh...

Fire ant-attacking fly spreading rapidly in Texas

...these flies, ants have difficulty retrieving food, having mating flights or rescuing their larvae after mounds become disturbed by animals such as armadillos during the day. "It's not just because these tiny flies are numerous, it's also because they are diverse in kinds, coming after worker ants in man...

Targeted virus compels cancer cells to eat themselves

...l digested material. The cells showed no sign of having been killed by apoptosis -- a much better known process of programmed cell death. A normal biological defense mechanism that systematically kills defective cells, apoptosis is suppressed or dysfunctional in cancer cells. Many cancer therapies focus o...

Researchers find that bumblebees' flower choice matters

...create an exact copy of each population. Imagine having 20 sets of identical twins, he says, and dividing them into two groups that are exact copies of one another. That is what Karron has done with his garden, only he has produced many identical sets so that he can subject them to different ecological co...

New study calculates millions of years saved in lives of AIDS patients

... modelers will describe the next 15-year period as having saved hundreds of millions of life-years, not just in North America but around the globe." ...

Mayo Clinic Cancer Center: Harnessing the measles virus to attack cancer

...gery. They also must be immune to measles, either having had the disease or been vaccinated against it. In the 1970s, measles infections were observed to cause regression of pre-existing cancer tumors in children. This information was noted, but nothing was done to study this phenomenon until the late 1...

New treatment for severe malaria

...nt of heparin, and has the important difference of having no effect on normal blood coagulation. ...

Electric fish in Africa could be example of evolution in action

... "They seem to only choose to mate with other fish having the same signature waveform as their own." Except for some, Arnegard has discovered. When he joined Hopkins' lab, the team was about to publish descriptions of two separate species. But when Arnegard decided to take a genetic look at these particul...

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