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Tag: "increases" at biology news

Contagious obesity? Identifying the human adenoviruses that may make us fat

...tific standards. The authors concluded that Ad-37 increases obesity in chickens, but Ad-2 and Ad-31 do not. "Ad-37 is the third human adenovirus to increase adiposity in animals, but not all adenoviruses produce obesity," the study concluded. There is still much to learn about how these viruses work, Whigham...

Free HIV tests cheaper than charging when goal is preventing AIDS

...iversity Medical Center. "Providing free HIV tests increases the number of clients presenting for evaluation and makes HIV prevention more cost-effective. We changed our practice because of these results," Thielman said. The Duke team partnered with the nongovernmental organization KIWAKKUKI, an acronym for ...

Environmental tobacco smoke linked to behavior problems in children and pre-teens

...n found a relationship between cotinine levels and increases in acting out; increases in holding things in, often manifested by anxiety and depression; increases in behavior problems as ...

Patterns in genome organization may partially explain how microbial cells work

...ust as the wavelet analysis identified significant increases in sea surface temperatures; it also revealed nonrandom patterns in the genomes of the 151 microorganisms studied. "The analysis generated diagrams of psychedelically colored islands of statistically significant patterns floating in a sea of insigni...

Living taste cells produced outside the body

...onded to either bitter or sweet taste stimuli with increases of intracellular calcium, another property characteristic of mature taste cells. Lead author Hakan Ozdener, MD, PhD, observes, "Although scientists have tried for many years to maintain taste cells in a long-term culture system, it was commonly bel...

Powerful new tool for studying brain development

...s to information on those genes in other databases increases the value of each new gene discovery," Mehta said. This integration of multiple research approaches and information provided by the BGEM was key to the success of a St. Jude study of the origin of human brain tumors in children. The team used a tech...

Growth hormone is made in the brain, report scientists

...s previously found that hippocampal growth hormone increases with learning. The current study shows that the ho...hese results is that exposure to a stressful event increases growth hormone expression in males -- but the increase in females may be dependent on their levels o...

Tiny polyps gorge themselves to survive coral bleaching

...d's coral reefs sustained serious bleaching due to increases in seawater temperature and the animals died. "I...requency, duration and intensity of warming events increases globally. But Grottoli warns that Montipora's resilience doesn't diminish the threat that bleaching ...

New drug could reduce tissue damage after heart attack

...at trace levels in the blood but its concentration increases sharply in almost all diseases including trauma, i...k. Patients with the greatest and most persistent increases in CRP concentration suffer higher mortality, and CRP is always deposited in and around the damaged ...

'Bad' enzymes may wear white hats after stroke

...od vessel--MMPs chew up damaged brain tissue. This increases the risk of swelling and hemorrhage in the brain. Some current stroke treatment research seeks ways to inhibit MMPs to minimize their danger ?but this new study shows that a different approach may be required in the long run. "We have mostly though...

Marine mammals are on the frontline of failing ocean health

...he food web, and thus to people. Habitat loss and increases in water temperature also allows both pathogens and disease vectors to move into new areas. "The rest of the world is likely to see similar changes as we go forward in time. We're just seeing change more rapidly in Alaska," says Sandifer. "What ...

World faces challenge as life expectancies lengthen, scientist says

...ve thought of, is that the total global population increases dramatically. From an original projection of 8 billion we end up topping out at 10 to 11 billion. In many countries, this would have an enormous, and not necessarily positive, impact. For example, the idea that China would go from 1.5 to 1.8 billion,...

Chemotherapy gel may fight breast cancer and reduce breast deformity

...owing surgery, it is expensive, time consuming and increases the cosmetic deformity caused by surgery," said Howard D. Edington, M.D., associate professor of surgery and surgical oncology at the University of Pittsburgh and faculty member at McGowan. "We sought to develop a possible alternative to radiation th...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...e that plugging in the sea lion data substantially increases the predictive capabilities of the model, Costa said. "It's like predicting the weather. To get accurate predictions, the weather models have to be constantly updated with new data from weather stations all over the country," he said. The research...

Male rivalry increases when females at most fertile, say researchers

...r attention. Similarly in humans, rated dominance increases when the female is most fertile. What is interesting here is that male behaviour is determined by that of the females; men become more wary of masculine-looking men only when the females facial preferences begin to shift prior to ovulation. "Face ...

Hooked on fishing, and we're heading for the bottom, says scientist

...les. "The irony is that reducing fishing actually increases the catch in the long term," says Dr. Pauly. "Public policy must be downsizing the industry to a level that allows for sustained catch and stocks to rebound." This past October, Dr. Pauly was awarded the prestigious 2005 International Cosmos Award....

Manipulating single cell receptor alters animal behavior

...kinase, but didn't activate another pathway, which increases levels of something called IP3 inside the cell," Daniels says. "Surprisingly, the animals given this drug increased their salt intake without increasing their water intake. "This supports our hypothesis that intracellular signaling pathways stimulat...

Lack of a key enzyme dramatically increases resistance to sepsis

...dulate inflammation and innate immunity in humans, increases the body's "vulnerability to bacterial infection and septic shock" while a deficiency confers strong resistance to sepsis. This new discovery suggests that caspase-12 antagonists could be a potentially useful in the treatment of sepsis and other infl...

Stanford study of owls finds link in brain between sight and sound

... "Relatively nothing is known about how the brain increases and decreases signaling," Winkowski said. "We want to discover the cellular mechanisms of how attention works." "Once we learn the circuitry for attention, we plan to use that to drive learning in an efficient way," said Knudsen. He added that they ...

Spousal illness can trigger partner death

...pouse is hospitalized, the partner's risk of death increases significantly and remains elevated for up to two years," he notes. The period of greatest risk is over the short run, within 30 days of a spouse's hospitalization or death. Over this time frame, hospitalization in a spouse can confer to a partner alm...

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