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Tag: "mean" at biology news

Paying attention sets off symphony of cell synchronization

...as if the stimulus itself was stronger. That would mean that paying attention might make something appear more intense, and possibly distort its actual appearance. In the Northwestern study, EEG measures of brain activity were used to show precisely how attention alters brain activity. The team of psych...

New neurons could act to alleviate epilepsy

...ed inhibitory connectivity. Such differences could mean the newly generated neurons "could have significant beneficial effect on the epileptic syndrome," concluded the researchers. "Our study demonstrates that both a physiological stimulus and an insult to the adult brain trigger the formation of new d...

New biologic treatment for tennis elbow may replace surgery for chronic sufferers

...ne with epinephrine) into the affected elbow. The mean duration of symptoms in this group was 12 months a...ks post-treatment the PRP-treated group reported a mean 46 percent improvement versus a mean 17 percent improvement in the control group. Eight weeks after...

Ocean temperature predicts spread of marine species

... what large-scale changes in ocean temperature may mean for adult populations." The study appeared onli...egrees. "On the up side, shorter dispersal can mean greater survival because the larvae spend less time in the water, where they are at a high risk of d...

New finding points way to foiling anthrax's tricks

... against the stealth siderophore, but that doesn't mean humans can't design one of their own, according to Raymond. His UC Berkeley team and the Seattle team are now exploring how their discovery could be used to diagnose or treat anthrax. The researchers published their findings Nov. 28 in the online ...

Study of gene transfer for erectile dysfunction shows promise

...edicine. Men ranged from 42 to 80 years old with a mean age of 59. Six subjects were white, four were black and one was Hispanic. In half of the subjects, the cause of ED was diabetes or cardiovascular disease ?both of which can interfere with the ability of smooth muscle cells to relax. The primary go...

Tarantulas produce silk from their feet

...is regarding spider silk," Summers said. "It could mean that silk production actually originated in the feet to increase traction, with the diversity of spinneret silk evolving later." The researchers placed tarantulas on a vertical glass surface. Though ground dwelling, these spiders can normally hang ...

Clot-busting drug helps revive cardiac arrest patients

...enecteplase had been receiving ACLS measures for a mean of 30 minutes and received a mean of eight doses of standard medications. "The study supports the use of fibrinolytic drugs in selec...

Man may have caused pre-historic extinctions

...l remains and the incompleteness of fossil records mean that the survival of the horse beyond the arrival of humans cannot be ruled out. The PNAS paper develops a new statistical method to help resolve the inherent problems associated with dating fossils from the Pleistocene period. The aim is to provide...

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

...doxical ?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 what keeps the level of mutation, and thus the cancer risk, low. But the existence of this variety of specialist enzymes imp...

New strategy developed to combat West Nile Virus

... simply having more mosquitoes doesn't necessarily mean that we'll experience a greater incidence of West Nile Virus. The mosquitoes themselves must first be infected with the virus. Researchers call the process through which more mosquitoes become infected 'amplification,' and there are a number of facto...

Where have all the butterflies gone?

Cold, wet conditions early in the year mean that 2006 is shaping up as the worst year for California's butterflies in almost four decades, according to Art Shapiro, professor of evolution and ecology at UC Davis. That's a turnaround from last spring, when millions of painted lady butterflies ...

K-Staters design and build a low-cost remote sensing tool for environmental studies

...osphere links all cultures and nations. By that, I mean that carbon dioxide emitted in China, for example, can impact the vegetation in North America or Europe and vice versa. Any decisions about climate change have to be based on a complete global analysis," he said. "Having this remote sensing tool wil...

Fertility hope as study shows eggs survive in older ovaries

...on of egg regeneration in mice did not necessarily mean the same happened in humans. "But the mechanism could provide direction for ovarian stem cell research and help women with fertility conditions," he said. One in six Australian couples faces some form of infertility. Due to the limitations and sensi...

Report warns about carbon dioxide threats to marine life

...hat the more critical question is: "What does this mean in terms of organism fitness and the future of marine ecosystems?" ...

Gene discovery opens door to tackling disease

..." he said. "The benefit is that 'smart' drugs can mean fewer nasty side effects for patients as they target specific genes, not entire areas of the body." The find could also help researchers create blood tests to diagnose breast and prostate cancer. "A breakthrough in the techniques available to diagn...

New treatment for food poisoning

...iotic resistance in the laboratory does not always mean that the drug will not work in the infected patient. This work brings some optimism to the highly worrying problem of the increasing resistance to antibiotics." The Listeria bacteria causes the food-borne disease, listeriosis. It often triggers a br...

Speeding the search for elusive chromosomal errors

...errors in chromosomes, improved diagnosis does not mean that physicians can provide more effective treatments, at least not immediately. In the long run, adds Dr. Shaikh, better knowledge of the underlying genetic cause of a disease may provide targets for designing future therapies. Conventional genetic...

Higher risk for cervical cancer seen among women infected with multiple HPV types

...the pap smear and HPV tests were administered. The mean follow-up time of the study participants was over three years. When Franco, Trottier and their colleagues analyzed the data about all patients (women who did not develop pre-cancerous cervical lesions as well as those who did), five HPV types emerg...

Chimpanzee study reveals genome variation hotspots

...u can study what they're involved in and what they mean from a morphological variation and disease standpoint." Specifically, the study of the processes that lead to variations and mutations within a species can help researchers understand the evolution of copy number differences between species, Perry e...

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