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Tag: "alone" at biology news

Mercury contamination of fish warrants worldwide public warning

...on inhabitants of mining regions. These activities alone contribute more than 10 percent of the mercury in Earth's atmosphere attributable to human activities today. Little is known about the behavior of mercury in marine ecosystems and methylmercury in marine fish, the ingestion of which is the primary ...

Enhancing activity of marijuana-like chemicals in brain helps treat

...- the results were striking. "The dopamine drug alone did a little bit but it wasn't great, and the drug that targeted the enzyme that degrades endocannabinoids basically did nothing alone," Kreitzer said. "But when we gave the two together, the animals really improved dramatically." ...

How appetite-stimulating brain cells work overtime during fasting

...ecreased levels of the fat-produced hormone leptin alone signaled the hypothalamus that fat levels have fallen, leading hypothalamic neurons to activate a program, including hunger, to preserve energy and restore fat levels, he said. Now, "a series of studies, including those reported in this issue of ...

Hybrid molecule causes cancer cells to self-destruct

... To find out whether this butyrate-ManNAc hybrid alone would produce the positive results, the researchers tested three other sugar-butyrate combinations and a butyrate salt compound with no sugar attached. The four other formulas and the butyrate-ManNAc hybrid were each added to lab dishes containing ca...

Smell may outlast other senses

...cular Biology, said the study suggested that aging alone had a small detrimental effect on smell. “However our sense of smell is vulnerable to both the direct effects of some medications and changes associated with a number of neurodegenerative illnesses. Exposure to these factors typically increases w...

Scientists find new genes for Crohn's disease

...the body. However, mutations in these two genes alone cannot account for the entire genetic component of the disease. To identify additional genes that are associated with Crohn's, the researchers scanned more than 300,000 single nucleotide polymorphisms, or SNPs, in the genomes—all of 22,000 or so gene...

Cancer vaccines -- Taking a jab at cancer by stimulating the immune system

...n whether the cytotoxic p53 peptides are delivered alone or in combination with a helper T cell-activating peptide that is either specific to p53 or not specific to p53. "Despite great medical progress, the survival rate in head and neck cancer still remains very poor, at about 50 percent, and there i...

HIV protein enlisted to help kill cancer cells

...o pull a protein called Bim into cancer cells. TAT alone cannot cause AIDS and has no adverse health effects. Bim acts as a tumor suppressor and causes cancer cells to die through apoptosis, a process by which cells "commit suicide." The research team found that the TAT-Bim compound activated apoptosis m...

New research says winning a Nobel Prize adds nearly 2 years to your lifespan

...nd medical researchers as to whether social status alone can affect people's well being and lifespan. Although the existence of some kind of effect is known from studies of monkey packs, in humans it has been difficult up till now to separate any perceived positive effect of "status" from the effect of sim...

Custom-made cancer cell attacks

... gallons a year. But critics say that corn ethanol alone won't meet the president's goal of 35 billion gallons of alternative fuels in 10 years, because cultivating corn to use only its grain would take up too much land. According to the National Environmental Trust, producing 35 billion gallons of ethanol...

Cellulosic ethanol: Fuel of the future?

... gallons a year. But critics say that corn ethanol alone won't meet the president's goal of 35 billion gallons of alternative fuels in 10 years, because cultivating corn to use only its grain would take up too much land. According to the National Environmental Trust, producing 35 billion gallons of ethanol...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

...he exit. It was at least 10 centimeters long. Size alone suggests the lesion was cancer," Dr. Genta said. They then used a state-of-the-art tumor-staging method from 21st century pathology and determined that Napoleon had at least T3N1M0, or Stage IIIA, gastric cancer, which is very severe. The method g...

Statin plus cancer drug deliver combo punch to brain cancer cells

...n the laboratory. By contrast, using either agent alone wiped out fewer than 20 percent of cells. The Hopkins researchers published their findings in the January issue of the American Journal of Pathology. The researchers caution that the cyclopamine-lovastatin combination has yet to be tested in anima...

Gene hunters close in on Lou Gehrig’s disease

...55,352 times, you are bound to get lucky by chance alone on some of those throws,?he says. “The next step is to go back and figure out which of these ‘hits?are real and which are false.? Thousands of other SNPs were more weakly associated with ALS, some of which could turn out to be just as important as...

Fish can determine their social rank by observation alone, study finds

...tential rivals. Although the bystander remained alone in his cubicle and never swam with the others, he was allowed to observe a series of fights between rival pairs--A vs. B, B vs. C, C vs. D, and D vs. E. Researchers manipulated the fights so that A would dominate B, B would dominate C, and so forth...

Stem cell therapy shows promise for rescuing deteriorating vision

... surprising, say Gamm and Lund, was that the cells alone demonstrated a remarkable ability to rescue vision. "On their own, they were able to support retinal cells and keep them alive," says Lund, who has conducted pioneering studies of cell therapy for eye disease. "We didn't expect that at all. We've ...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

...xide nanoparticles alone, nor the coating material alone are overtly toxic, but combining the two to create water-soluble nanoparticles has a completely different effect," said Pisanic, who carried out the studies as a part of a Ph.D. thesis project at UCSD. Iron oxide nanoparticles are considered promi...

Virtual duck bills demonstrate species coexistence

...ucks to partition food by size. "Lamellar spacing alone does not lead to resource partitioning," said Gurd, "ducks with small spacing are more efficient than species with wide spacing because they retain a wider range of particle sizes than species with wide spacing. In order for variation in bill morphol...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...TPs remained unanswered. The chemical attraction alone between RNA bases—adenine, cytosine, guanine, and uracil—and their complementary bases on the DNA template strand is far from sufficient to account for the incredible selectivity of polymerase II, Kornberg said. And the scientists didn’t know either ...

Heart smart: new drug improves blood flow

...e causes to reliably identify and treat cases, let alone prevent these diseases," he says. "In up to 95 per cent of cases, the root causes of vascular diseases are still unknown. So clinicians have to rely on 'lifestyle' indicators and 'risk factors' such as high blood pressure and high cholesterol. "How...

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