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No longer a gray area: Our hair bleaches itself as we grow older

Wash away your gray? Maybe. A team of European scientists have finally solved a mystery that has perplexed humans throughout the ages: why we turn gray. Despite the notion that gray hair is a sign of wisdom, these researchers show in a research report published online in The FASEB Journal ( htt...

Biodiversity itself begets a species cascade, researchers say

EAST LANSING, Mich. Biodiversity feeds on itself, researchers found, as evolving animals open niches for other new species. Such is the case, says a Michigan State University researcher, with a parasite found to be evolving in sequence with an emerging host insect in western Michigan apple trees....

Scripps scientists develop first examples of RNA that replicates itself indefinitely

Now, a pair of Scripps Research Institute scientists has taken a significant step toward answering that question. The scientists have synthesized for the first time RNA enzymes that can replicate themselves without the help of any proteins or other cellular components, and the process proceeds ind...

Virus weaves itself into the DNA transferred from parents to babies

Parents expect to pass on their eye or hair color, their knobby knees or their big feet to their children through their genes. But they don't expect to pass on viruses through those same genes. New research from the University of Rochester Medical Center shows that some parents pass on the huma...

Scientists discover how deadly fungus protects itself

February 3, 2009 (Bronx, NY) Researchers at Albert Einstein College of Medicine of Yeshiva University have discovered how a deadly microbe evades the human immune system and causes disease. The study, published in the journal Proceedings of the National Academy of Sciences ( PNAS ), may h...

Marine phytoplankton changes form to protect itself from different predators

Suppressing colony formation is a useful strategy against copepods because they prefer to eat colonies of phytoplankton. A tiny single-celled organism that plays a key role in the carbon cycle of cold-water oceans may be a lot smarter than scientists had suspected. In a paper published June 1...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

In three new independent studies, researchers have deepened our understanding of the remarkable ability of some specialized areas of the brain to activate both in response to one's own actions and in response to sensory cues (such as sight) of the same actions perpetrated by another individual. Thi...

Atmosphere may cleanse itself better than previously thought

A research team from Purdue University and the University of California, San Diego has found that the Earth’s atmosphere may be more effective at cleansing itself of smog and other damaging hydrocarbons than was once thought. Scientists, including Joseph S. Francisco, have learned that some natu...

More than half of Texas physicians do not always recommend HPV vaccine to girls

...ital Medical Center. The quadrivalent human papillomavirus (HPV) vaccine has been mired in controversy since it was approved in 2006. Texas placed itself at the center of that controversy early on with a mandate for universal vaccination from the governor's office, followed by a swift rebuke of that man...

Scary ancient spiders revealed in 3-D models, thanks to new imaging technique

...to increasing predation from the amphibians by growing spikes, while the other responded by becoming an ambush predator, hiding away and only exposing itself when it had to come out to eat." At present, most palaeontologists analyse fossils by splitting open a rock and looking at the creatures encased in...

Martin Hensen, head of e-strategies, UCB Germany: Making e-marketing more than just an add-on

...of Web 2.0. But he questions whether pharma is ready for Web 2.0. The health system is 100% regulated, Hensen says, making it Health 1.0. But pharma itself is no better. He says with content needing 100% approval, social media tools like YouTube and Facebook blocked at many companies, more SOPs than websi...

Antibody targeting of glioblastoma shows promise in preclinical tests, say Lombardi researchers

...We found just the right one." They collaborated with ESBAtech in Switzerland who created a small single-chain antibody fragment in yeast that would itself bind to the sweet spot, blocking ALK's interaction with PTN. In the present study, the researchers successfully tested the antibody in human glioblast...

Jet-propelled imaging for an ultrafast light source

...oplets one at a time. And the nozzle won't clog, because even a particle bigger than the sample protein or virus bigger than the stream of liquid itself can still fly through the glass nozzle without hitting the walls and getting stuck. The frequency at which the droplets emerge can be controlled ...

Study reveals a reprogrammed role for the androgen receptor

...f the ways such cells re-start their growth is by producing their own androgen, scientists have discovered. Another way involves the androgen receptor itself the "keyhole" in the cell nucleus that androgen molecules fit into but the actual mechanism by which it operates hasn't been known. To find that...

New windows opened on cell-to-cell interactions

... down? We've really had a poor idea of what's going on. Knowing the genome and what proteins are there is crucially important, but that information in itself does not tell you anything about the answer to the question." ...

Scripps-led study shows ocean health plays vital role in coral reef recovery

...t," said Jessica Carilli, Scripps graduate student and lead author on the study. "Similarly, a coral organism that must be constantly trying to clean itself from excess sediment particles will have a more difficult time recovering after a stressful condition like bleaching." Carilli and colleagues ana...

The right messenger for a healthy immune response

...also how diseases like autoimmune diseases may develop," says Wei: without Beta-Interferon, the immune system may not be able to learn how to tolerate itself during the embryonic phase and that it should not fight against self-structures. "Our findings can help to develop or improve new therapeutics to comb...

A global model for the origin of species independent of geographical isolation

...he study. "While the spatial environment may vary, specific physical barriers aren't necessary. Just as traffic jams can form from the flow of traffic itself without an accident, the formation of many species can occur as generations evolve across the organisms' spatial habitat." ...

Baylor researchers unravel mystery of DNA conformation

... the base flipping back to its "perfect spring" state. When the molecule is overwound, it assumes a "Pauling-like DNA" state in which the DNA turns itself inside out to expose the bases -- much in the way Pauling had predicted. Zechiedrich and her colleagues theorize that the base flipping, denaturat...

Researchers achieve major breakthrough with water desalination system

...ariables, including the precise measure of chemical additives to condition the water. All the valves are computer-controlled, so the system can adjust itself automatically. We can also see how much energy we're using, and in the software, we've also included various techniques for optimizing the system so t...

New advance in revolutionary 'bullet fingerprinting' technique

...eicester's Forensic Research Centre developed- in collaboration with University scientists - a method to 'visualise fingerprints' even after the print itself has been removed. The revolutionary technique was named last year as one of Time Magazine's top 50 inventions of the year. Now continuing work e...

M2SYS Technology to Offer Desktop Biometric Technology to Kronos Customers

...ecial requirements such as labor distribution and employee self-service. "With the establishment of this relationship with Kronos, M2SYS has cemented itself as the leading provider of biometric technology to the workforce management market," noted Michael Trader, president of M2SYS Technology. "We are del...

22nd Congress of the European College of Neuropsychopharmacology, Sept. 12-16, 2009, Turkey

...tal health as a priority area in recent years. The European College of Neuropsychopharmacology (ECNP), a scientific forum established in 1987, has set itself the task to bridge the gap between basic research and medical practice, paving the way for improved pharmacological treatments in mental disorders. Wi...

A matter of density, not quantity

...colonizing too small an area. However, the work of Ismagilov's team has shown that quorum sensing is also activated by a single cell if the cell finds itself in an extremely enclosed space, which raises questions as to how quorum-sensing-regulated processes are relevant both to large colonies of cells and t...

Our 'caveman logic' embraces ESP over evolution

... share them. These are examples of what evolutionary psychologist Hank Davis calls "Caveman Logic." Although some examples are funny, the condition itself is no laughing matter. In CAVEMAN LOGIC: THE PERSISTENCE OF PRIMITIVE THINKING IN A MODERN WORLD (Prometheus Books, $19.98), Davis encourages us to tr...

Protein can help cells or cause cancer, Purdue researcher finds

...wth, Plk1 uses its protein kinase activity called phosphorylation, which consists of adding a phosphate group to a protein called Topors. Topors binds itself to p53 molecules during the ubiquitination process. Phosphorylation is basically an instruction from Plk1 to increase its ubiquitination activity, whi...

Ben-Gurion U. researchers reveal connection between cancer and human evolution

...he correct environment, they can cause disease." As reported in the leading journal Genome Research , "We show, strikingly, that evolution repeated itself in cancer. If we better understand how evolution moved, we can understand the genetic basis of many complex disorders. Since mitochondria play a centr...

Brain malformations significantly associated with preterm birth, Wake Forest research shows

...est association between the two. Some types of brain defects have a stronger association with preterm birth than others, the study showed. The list itself could possibly offer some clue to the association. Among the malformations studied with the highest rates of preterm birth were hydrocephaly, an abnor...

Rampant helper syndrome

...ll helper molecules. Such molecules are stored inside special pockets in the proteins and carry out essential metabolic functions. The living organism itself produces many of these helpers. Others like vitamins must be obtained from food. Severe vitamin deficiencies are a harsh reminder of how essential t...

Women with endometriosis need special care during pregnancy to avoid risk of premature birth

... 1.33 greater risk of preterm birth. Women with endometriosis were also more likely to have difficulty in conceiving and need to receive ART, which is itself a risk factor for adverse pregnancy outcome. Among women with endometriosis, 11.9% conceived after ART compared with the 1.4% of women without endo...

Researchers see evidence of memory in the songbird brain

...channel proteins, which allow ions to flow into the cell. This could be one way that the brain dampens its response to a powerful stimulus, protecting itself from too much disturbance, Clayton said. "Whenever something unexpected and different comes along, such as the song of a new bird in the neighborho...

M2SYS Technology to Offer Desktop Biometric Technology to Kronos Customers

...ecial requirements such as labor distribution and employee self-service. "With the establishment of this relationship with Kronos, M2SYS has cemented itself as the leading provider of biometric technology to the workforce management market," noted Michael Trader, president of M2SYS Technology. "We are del...

DNA template could explain evolutionary shifts

...sage of the gene. However, in the early 1990s, Lupski was one of the early champions of a newly discovered mechanism in which the structure of the DNA itself was grossly duplicated or deleted to change numbers of copies of a gene that occurred in the genetic material. This "copy number variation" wrote a ne...

Researchers observe single protein dimers wavering between two symmetrically opposed structures

...-dimensional structure (shape), can actually twist itself into a second form, depending on the protein's che... made up of two identical parts can actually twist itself so that one copy of the protein is turned upside d...gh the A2L2 was active, it surprisingly configured itself mostly in the syn structure, which was believed to...

New supplement may help slow sight loss in elderly

...n at the Royal Hospital in Belfast, said: "Late AMD causes severe sight loss and has a huge economic impact both in terms of the effects of sight loss itself and in terms of the expensive treatments that are needed to deal with the condition. "Up to 500 people a year in Northern Ireland will lose sight...

Cancer-causing protein can also help fight the tumors it causes

...Science One and a recent review about such cell-to-cell transferring of proteins in FEBS Letters. Turning a cancer-causing protein against cancer itself The idea that proteins can transfer between cells challenges the original theory of the cell, according to Rechavi. "All the energy flow, metaboli...

Potential for non-invasive brain tumor treatment

...ith, director of the Duke University Ultrasound Transducer Group and senior member of the research team. "There are some design issues of the catheter itself that we feel can be overcome with little difficulty." Advances in ultrasound technology have made these latest experiments possible, the researche...

Sediment yields climate record for past half-million years

...debris fell to the bottom and of the ocean floor. The more debris present, the more icebergs had been released to carry it, meaning that the ice sheet itself had to have been larger. "Based on this, we've determined that the Laurentide Ice Sheet was probably largest during the last glacial cycle than it ...

Pre-pregnancy depressed mood may heighten risk for premature birth

...ural, neuroendocrine and immune systems as a result of chronic exposure to stressors lead to health disparities for blacks. Some of this may manifest itself in premature birth and low-birth weight," Gavin said. The study did not look at depressive mood or depression during pregnancy because the larger re...

Researchers identify new risk factor gene for rheumatoid arthritis

... genes involved in rheumatoid arthritis but this genetic finding is significant because of its key role in immune system regulation. It did not reveal itself in previous genetic studies because the sample size was just not large enough. In previous studies, genetic samples from about 2,000 patients were use...
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