New findings implicate cell size controls in a variety of diseases
...tified a molecule called AMPK that makes TSC2 work harder in starvation conditions. Though it wasn't known previously that AMPK was performing this function, the molecule had earlier been implicated in Wolf-Parkinson-White Syndrome, a genetic disease marked by problems in the electrical circuitry of the he...Smallpox in Europe selected for genetic mutation that confers resistance to HIV infection
...uses to slip into immune system cells. HIV-1 has a harder time infecting people who have a mutation in one of the two genes that code for this receptor protein, and if these people become infected, their disease progresses more slowly. Those with mutations in both copies of the gene are almost completely re......l as illuminate those functional elements that are harder to find, and study the nature and path of genome evolution....Inability to pump oxygen during exercise could pinpoint early heart problems
..., and the load on the heart also rises as it works harder to meet the body's increased needs for oxygen carried by the blood. However, researchers found that subjects who were delivering less oxygen to the body per beat after the first few minutes of exercise also had reduced levels of heart function durin...Are the bright colors of some avian eggs signaling female genetic quality to their mates?
...ity to their mates in order to induce them to work harder for offspring that will inherit the advertised traits. According to modern theories of sexual selection, signals have to be costly to be reliable and evolve. The blue-green pigment biliverdin is a potent antioxidant the deposition of which in eggshe......nser than native grasses and so presumably make it harder for the shrikes to hunt insects. The shrike recovery program costs a lot $2.3 million in 1999 and Roemer and Wayne suggest a way to benefit both the birds and the foxes without spending any more. The answer is simple: shift the money that was spen...Obesity, kidney genetics, erectile dysfunction among highlighted research at APS Meeting
...tension) can make the heart and blood vessels work harder and stresses the kidneys, which leads to a variety of cardiovascular and kidney diseases. African-Americans are known to have disproportionately higher rates of elevated blood pressure compared to the rest of the U.S. population. These higher blood ...Researchers involved in renal and cardiovascular function gather for fall conference
...tension) can make the heart and blood vessels work harder and stresses the kidneys, which leads to a variety of cardiovascular and kidney diseases. African-Americans are known to have disproportionately higher rates of elevated blood pressure compared to the rest of the U.S. population. These higher blood ...Fly bites plant, but plants can bite back, Purdue scientists find
...resistance genes in wheat plants because it's much harder for the Hessian fly to overcome three different resistance genes simultaneously." For the flies and the plants, it's the old axiom: survival of the fittest. The flies conquer the plants' resistance because a few of the insects are genetically strong ...Infants more vulnerable to serious brain injury from falling than previously thought
...ation. These forces increase with higher falls and harder surfaces. The doll was suspended from a scaffold and allowed to fall 134 times from heights of 1, 3 and 5 feet onto surfaces commonly found in a home: a concrete floor, .25-inch-thick carpet padding, and a 4-inch-thick foam pad, simulating a crib ma...Measles on the rise as vaccinations fall in the UK, Science study reports
...ection Agency in London, U.K. "Measles is becoming harder to control due to the lack of confidence in the MMR vaccine and because of this the United Kingdom has the potential to have a resurgence of measles," said Ramsay who noted that the obvious question of when a possible resurgence could occur is imposs...Cross-species mating may be evolutionarily important and lead to rapid change, say IUB researchers
...ain small differences we see within a species, but harder to account for larger differences between species that require changes in multiple traits or genes," Rieseberg said. "We have provided an explanation for how some of these more difficult changes might happen. Dramatic evolutionary changes are most li...Cold-climate creatures may be the ultimate survivors of global warming, study finds
...o global warming, but it turns out they may have a harder time surviving as their habitat temperatures increase," he added, noting that a half-degree increase in the Earth's temperature could be enough to wipe out countless porcelain crabs: Thermal tolerance Stillman's experiment focused on four species o...Invading species have tough time cracking diverse neighborhood
...to establish itself in a new ecosystem will have a harder time if it encounters a diverse mix of resident species rather than just a few species, according to research at the University of Minnesota. Working with prairie plants, the research team found that a rich assemblage of species repels invaders becau...Yeast, wormwood & bacterial genes combine in microbial factory to make antimalarial drug
...it out the protein. Scientists have found it much harder to transplant entire gene systems to build new chemical assembly lines. Keasling, however, assembled 10 genes, including control elements, from three different organisms -- bacteria, yeast and wormwood-- and got them to work together successfully. Th...Just how many species are there, anyway?
...y to do," says Rosenzweig. It would have been much harder if they had to select ecoregions based on biologically-relevant factors. "It's not easy to know in advance what measures are important to most species temperature? rainfall? elevation?" he says. The researchers have even more encouraging news. Rosen...Memory for music: Musicians don't have to hear themselves perform after they learn a song
... that the researchers made it harder for the participants to memorize the music after they learned it. After learning the music, but before playing it back, the participants had to perform an "interference" task: they either...Mercury in packaged whale meat across Japan may be a major health problem
...re increased in Japan as larger whales have become harder to obtain, Endo says. About 40 percent of all whale products marketed in Japan are from toothed whales, according to the Institute of Cetacean Research. This meat is eaten mostly in coastal fishing villages, but also in metropolitan areas around the...MIT lab works to mimic spider silk
...as two different regions, one of which is slightly harder than the other because the polymer fibers are partially aligned. If this idea is correct, spider silk actually has three different phases: hard, soft and intermediate. The hard segments anchor the partially aligned regions, holding them in place in a......plicated than that." Friedland agrees. "It's a lot harder to get people to drive less or drive a more fuel-efficient car. Those are harder things to market and to convey to people." The authors also argue that government policy appears to ...