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Tag: "paradox" at biology news

New clues to the dark side of a key anti-tumor guardian

... tumor cells--but it also represents an intriguing paradox when it comes to the broader roles this protein plays in our well being. Past work has shown that in animal models, hyperactivation of the p53 protein is beneficial in terms of bestowing extra protection against tumor formation, but at the same time ...

Plants, too, have ways to manage freeloaders

...is puzzling, however, Simms said. "Mutualism is a paradox because natural selection acts on individuals, so why would an individual do something costly that benefits another individual?" she said. "Such a system is also vulnerable to exploitation - one species taking advantage of another. What mechanisms co...

Study shows AIDS drugs cost-effective, care underfunded

...as a patient sticks to HAART treatment, "the happy paradox is that paying high costs for antiretrovirals decreases overall cost of care," said senior author Michael Saag, MD. The HAART costs were about the same for patients who were sicker ?that is, who had lower CD4 cell counts ?as for healthier patients wi...

Alcoholism, smoking and genetics among Plains American Indians

...allele was the risk allele. "The answer to this paradox may lie in the relationship between anxiety and drinking patterns," she said. "In societies where regular, daily drinking is the norm, such as in Europe, anxious Met individuals may be more vulnerable to alcoholism through using alcohol as a coping ...

Sweet 'water taste' paradoxically predicts sweet taste inhibitors

A scientific paradox linking artificial sweeteners such as saccharin with a sensory experience in which plain water takes on a sweet taste has guided researchers to an increased understanding of how humans detect sweet taste. Reporting in an advance online publication...

Snakes' virtual glasses, leopard spots and all-optical transistors

...he Universität München believe the solution to the paradox could be a network of neurons in the snakes' brains –a kind of snake brain firmware - that provides image enhancement as though the snakes were wearing virtual corrective lenses. Because snakes' brains are small, the physicists kept their model of an...

A human taste for rarity spells disaster for endangered species

...hropogenic Allee effect" in rare species through a paradox of value. When rarity acquires value, prices for scarce species can skyrocket, even though continued exploitation will precipitate extinction. And as long as someone will pay any price for the rarest of the rare, market price will cover (and exceed) ...

How fish conquered the ocean

...fe," continues Dr. Finn, "so it seems a surprising paradox that fishes that live in water should have a problem acquiring it. Yet it was this paradox that provided the trail of clues for us to follow". "The physiological problems of reverting from...

Inflammation may play role in metastasis of prostate cancer

...tudy investigator. "This study helps explain the paradox that, in certain types of malignancy, inflammation within a cancer may be counterproductive," said Gonias. In research using mouse models and confirmed in human tissue, the scientists observed that a protein kinase called IkB kinasea (IKKa) turns d...

Common gene version optimizes thinking -- but with a possible downside

...Mental Health (NIMH) have discovered. The seeming paradox emerged from the first study to explore the effects of variation in the human gene for a brain master switch, DARPP-32. The researchers identified a common version of the gene and showed how it impacts the way two key brain regions exchange informa...

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