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Tag: "ten" at biology news

Brightening prospects of using fluorescent nanotubes in medical applications

...pproach to boost the quantum efficiency by five to ten times. The fact that the improvement was considerably larger – 20 to 100 times – came as a pleasant surprise. “Quantum efficiency is critical, but there are several other factors that make nanotubes particularly well suited for use in living system...

In nature, proteins sweep up nanoparticles

...d prolonged aggregation, with some blobs measuring ten microns in diameter. Their discovery could also refine the search for the earliest indications of life on Earth, as well as help determine whether planets like Mars once harbored life. Scientists involved in this research hunt for biosignatures, w...

Potent possibilities for parasite attack

... and its incidence has risen sharply over the past ten years. It is transmitted by the bite of various species of sandfly: wild and domesticated animals - as well as humans - act as a reservoir for the disease....

Human genetic 'deserts' are teeming with significant life

...more complex than anyone could have imagined, even ten years ago. Understanding these complexities is essential to the development of effective and safe genetic medicine in the future.”...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...etermined that lizards were consistently more than ten times more abundant on islands than on the mainland. Previous research conducted by Ted Case at UCSD and others on small groups of islands had found that islands?limited areas and isolation can reduce predation and competition pressures. As a res...

Maggots rid patients of MRSA

...in-patients at the Manchester Royal Infirmary, for ten years. More recently they found that many of their patients were suffering from MRSA-contaminated foot ulcers, with the rate doubling in a three year period, possibly due to overuse of antibiotics and the selection of broad rather than narrow-spectr...

New knowledge improves rice quality

...Much of this research would not have been possible ten years ago because we simply did not have the knowledge or the understanding of quality that we do now," Robert S. Zeigler, the director general of the Philippines-based International Rice Research Institute, said. "It really is a very exciting time t...

Study shows continued success for new HPV vaccine against virus responsible for cervical cancer

...0 deaths each year. Every day in the United States ten women die from cervical cancer, according to Kevin Ault MD, associate professor of obstetrics and gynecology at Emory University School of Medicine, and one of the study authors. But for the next generation of young women, a series of three shot...

Female-led infanticide in wild chimpanzees

...perienced a significant population increase in the ten years prior to the infanticide observations (42 individuals in 1996 to 75 in 2006), and that there had been an influx of at least 13 females with dependent offspring since 2001. The population changes resulted in a highly skewed male:female sex ratio...

Hexavalent chromium in drinking water causes cancer in lab animals

...owest doses given to the animals in the study were ten times higher than what humans could consume from the most highly contaminated water sources identified in California. The researchers report finding significant increases in tumors at sites where tumors are rarely seen in laboratory animals. Ma...

Rare cell prevents rampant brain activity

...dred million nerve cells linked together by around ten billion contact junctions called synapses. The activity of this extremely complex network is regulated through a dynamic balance between excitatory signals, which are transmitted by one type of synapse, and inhibitory counter-signals, which are trans...

NIH researchers discover protein that appears to regulate bone mass loss, the cause of osteoporosis

An estimated ten million Americans suffer from osteoporosis, and another 34 million Americans are at risk of developing the disease, which is characterized by a severe loss of bone mineral density, fragile bones and an increased risk of hip, spine and wrist fractures...

Penn researchers show how nanocylinders deliver medicine better than nanospheres

... drug paclitaxel to an animal model of lung cancer ten times longer than that delivered on spherical-shaped carriers. These findings have implications for drug delivery as well as for better understanding cylinder-shaped viruses like Ebola and H5N1 influenza. This study appeared online in Nature Nanot...

Fighting influenza & co. with 40,000 blood samples

...ortunately only prevents the disease in six out of ten cases.' By contrast, with young adults, the success rate is as high as 90 per cent. The reason for this is that the effectiveness of the immune system decreases with age. An international research consortium now wants to find out why this is the c...

Putting an old drug to a new use

...cross cell membranes. This transport is increased ten to 100-fold by nifedipine, but how exactly the compound brings about its effect is still unknown. Nifedipine is known to block membrane channels that control Ca2+ influx into cells, but if it exerts its effect on iron transport indirectly by changing...

Surgeons develop simpler way to cure atrial fibrillation

...lace the older "cut and sew" Cox-maze III in which ten precisely placed incisions in the heart muscle created a "maze" to redirect errant electrical impulses. "This technology has made the Cox-maze procedure much easier and quicker to perform," says Ralph Damiano Jr., M.D., the John Shoenberg Professo...

Stability of mRNA/DNA and DNA/DNA duplexes modulates mRNA transcription

... duplexes is determined by the distribution of the ten possible DNA/DNA nucleotide duplets (dAA/dTT, dGC/dCG, etc.) and the sixteen possible RNA/DNA duplets (rAA/dTT, rUA/dAT, etc.). Such duplet code does not carry any genetic information but seems to modulate the level of RNA expression. It is amazing t...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

...n-parasitic organisms, but in this case, there was ten times as much DNA than we originally thought there would be," says lead author Jane M. Carlton, Ph.D., who led the project while at The Institute for Genomic Research (TIGR), a not-for-profit research organization based in Rockville, Maryland. Dr. Ca...

20-year study shows significant rise in childhood obesity, especially among girls

... and boys from each of the three age groups ?four, ten and 16 - included in both samples. The data was dr... - had a BMI of more than 25, compared with one in ten in 1982. Six per cent of four year-old girls and two per cent of four-year-old boys had a BMI ...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

...cids, it was also determined that three out of the ten genes involved in the production of AS-48 express themselves together. The research also determined the way of that these genes are regulated and expressed as well. ...

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