Tag: "paradox" at biology news

CRESIB coordinates an international consortium to fight malaria caused by Plasmodium vivax

...linical patterns and even death of patients. The paradox is that even though malaria by P. vivax has large global disease burden, this is a poorly studied disease, which has been long forgotten. Consequently, this new research programme has a large importance, and an estimated initial duration of 4 years...

Soy estrogens and breast cancer: Researcher offers overview

...ogen-responsive tumors.) "The resolution of this paradox may lie in the timing of estrogen administration," Helferich said. Exposure to genistein, an estrogen, before puberty causes mammary gland differentiation. "A differentiated cell undergoes less proliferation and therefore is less likely to progress t...

New mathematical model to add rigor to studies of disease genetics and evolution

..." A confusing aspect of hotspot origination, the paradox considers how hotspot locations are tagged. Previo...d with about 10 percent of hotspots in humans. The paradox arises from the idea that if the "tag" or motif lies too close to the hotspot, the tag is likely to ...

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 inform...

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 ...

Mode of seed dispersal greatly shapes placement of rainforest trees

... the large-scale forest." In order to address the paradox of how so many rainforest species can coexist while competing for the same resources, Plotkin and Seidler studied a 50-hectare (500 meters by 1,000 meters) plot of lowland tropical forest at Pasoh Forest Reserve in peninsular Malaysia. They analyzed ...

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) ...

JCI table of contents: Nov. 1, 2006

... of Clinical Investigation now sheds light on this paradox by showing that EP4 is required for one of the processes that must occur for the DA to close. Susumu Minamisawa and colleagues from Yokohama University, Japan, used several different approaches to show that in mice, EP4 signals are required for the ...

Carnegie Mellon uses new imaging technique to discover differences in brains of people with autism

...in people with autism. This theory helps explain a paradox of autism: Some people with autism have normal or even superior skills in some areas, while many other types of thinking are disordered. Last summer, Just led a team of researchers that found for the first time that the abnormality in synchronizat...

UCLA study uncovers new risk factor for schizophrenia

...rs could be prevented. "Our findings point out a paradox in pregnancy," said Palmer. "Why doesn't the mother's immune system reject her fetus when it inherits a copy of the HLA gene from the father that substantially differs from hers? "It seems pretty clear that it's a good thing for the HLA genes of a...

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

...sche Universitt Mnchen 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 ...

How cooperation can evolve in a cheater's world

... cooperation evolve in a cheater's world? It's a paradox called the "tragedy of the commons," a conflict between individual interests and the common good that has stumped scientists for generations. Now a trio of researchers, including a Brown University biologist, has created a unique theoretical model th...

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 ...

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 ...

Princeton professor foresees computer science revolution

...nearly 20 percent between 2000 and 2004. "The big paradox is that the computer science revolution is just unfolding," Chazelle said. "Why, then, are students are running away from it; why is there this decline when the field has never been more exciting?" Chazelle will be on the "Computer Science Behind You...

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...

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 ...

Olfactory input dominates reproductive behavior in mice

... females." Dulac says this finding helps explain a paradox in humans, which lack functional vomeronasal systems. All vomeronasal-related mouse genes are inactive in humans, but this may not matter if pheromones can be sensed by the nose in humans as in mice. The exact nature of vomeronasal input to the hypot...

Classical subject underpins new biomedical advances

...r. To achieve this, cells need to overcome a major paradox -- the transfer of information, nutrients and waste products across fatty cell membranes which are designed to limit the transfer of these important molecules in order to keep the cell's environment separate from that of its neighbours. He will say t...

Scientists uncover clues to the mystery of 'gene deserts'

...in humans as well. In an effort to resolve the paradox and to help researchers more easily locate critical segments along the vast stretches of DNA deserts, scientists from LLNL, LBNL, and the Pennsylvania State University developed computational tools to decipher gene regulation by comparing the genomes...

1 2

(Date:7/24/2014)... Acoustic disturbance has different effects on different species ... the Universities of Bristol and Exeter which tested ... sooner to a flying seagull predator model when ... observed in European minnows. , Lead author ... Sciences said: "Noise levels in many aquatic environments ...
(Date:7/24/2014)... current biodiversity, the product of 3.5 billion years of ... history of life. But it may be reaching a ... literature and analysis of data published in Science ... loss and decline of animals is contributing to what ... sixth mass biological extinction event. , Since 1500, more ...
(Date:7/24/2014)... multi-institutional team of researchers has developed a new nanoscale ... noninvasive method for assessing the function and properties of ... better diagnosis and treatment of gut diseases. ... bowel syndrome and inflammatory bowel disease all occur in ... in patients with diseases such as diabetes and Parkinson,s. ...
Breaking Biology News(10 mins):Stanford biologist warns of early stages of Earth's 6th mass extinction event 2Stanford biologist warns of early stages of Earth's 6th mass extinction event 3New imaging agent provides better picture of the gut 2
Other Tags
abelsonphilipsmarripccantwoodresistancechromosomalabstinenceflowvegetablesmilkgastrointenstinalrashliquoriceshortnon