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Tag: "occurring" at biology news

How sneaky HIV escapes cells

...lls make HIV and other retroviruses by a naturally occurring export mechanism,” says Stephen Gould, Ph.D., Professor of Biological Chemistry at Johns Hopkins. Cells normally export certain membrane-bound molecules to the outside world by means of small sacs known as exosomes. By studying human T-cells under a ...

New study reports hotel guests at risk from carbon monoxide poisoning

...the researchers found 68 incidents of CO poisoning occurring at hotels, motels, and resorts between 1989 and 2004. In these incidents, 711 guests, 41 employees or owners and 20 rescue personnel were accidentally poisoned. Of those poisoned, 27 died, 66 developed pathological conditions, and 6 had conditions re...

How to lose weight and not go hungry: HU researcher develops drug that mimics feeling of 'fullness'

...compound that mimics the activity of the naturally occurring hormone called aMSH. This hormone is naturally ex...ids) which can serve as an analog to the naturally occurring aMSH hormone. They were able to demonstrate that their peptide, which they call BL-3020, displayed g...

Newly discovered antibody may be body's natural defense against Alzheimer's

...l Cornell Medical Center have identified naturally occurring antibodies in human blood that may help to defend against this form of dementia as well as other neurodegenerative diseases. The newly found antibodies selectively target aggregates of beta amyloid proteins called "oligomers" that are toxic to brai...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...ned McGraw, who studies the functions of naturally occurring chemicals in birds and their relationship to the birds’ colors and health. “In the case of the zebra finch, the cost is in the pigments – having enough of them to develop a red beak and enough to combat testosterone, which you also need to be red...

Study shows lizard moms dress their children for success

...ed in the wild and found a wide range of naturally occurring estradiol concentrations in the egg yolks. The researchers then performed experiments in breeding enclosures, each holding one male lizard and three females. The numbers of orange- and yellow-throated females in each enclosure were experimentally...

Gene responsible for common hearing loss identified for first time

...m) analysis, or looking at DNA sequence variations occurring in a single nucleotide, A, T, C or G, to study a large patient and control population from Belgium and The Netherlands. They found significant results for an amino acid changing SNP inTGBF1, and that this remained significant after correcting for mul...

Scientists close in on missing carbon sink

...s of carbon, even though tropical deforestation is occurring rapidly. "Our results indicate that intact tropical forests are taking up a large amount of carbon," Stephens explains. "They are helping to offset industrial carbon emissions and the atmospheric impacts of clearing land more than we realized." ...

Putting feelings into words produces therapeutic effects in the brain

...e left side of the brain; however, this effect was occurring only in this one region, on the right side of the brain,” he said. “It’s rare to see only one region of the brain responsive to a high-level process like labeling emotions.” Many people are not likely to realize why putting their feelings into wor...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

..., certain receptors are shaped to accept naturally occurring painkillers called opioids, which when they dock, ...ecame drastically more responsive to the naturally occurring painkiller, researchers found. Gene therapy inserts tailor-made genes into cells that can, f...

Treating HIV in war zones -- Public health emergencies need rapid advice from WHO

...g, with the episode of conflict-related disruption occurring early in the programme, and thus similar results in conflict settings may not always be possible. "Nevertheless," they say, "the key elements of contingency planning for care delivery in conflict settings are not resource-intense and we believe they ...

First confirmed common genetic risk factors for breast cancer

...l versions of these genes help prevent cancer from occurring in the first place, by helping cells to repair DNA breaks and other abnormalities that can result from chance or exposure to an environmental toxin, such as excessive UV sunlight. However, BRCA-1, BRCA-2 and the other previously identified breast can...

Want to save polar bears? Follow the ice

...hich of the existing 18 populations of polar bears occurring on two continents and one sub-continent stand the best chance of surviving as the polar cap shrinks in size. To that end, the project will utilize remote sensing satellite imagery on sea ice extent and concentration since 1978 to form a picture of po...

Resistant HIV quickly hides in infants' cells

...f the high rates of antiretroviral drug resistance occurring in infants in low-income countries who received a single dose of an NNRTI for prevention of mother-to-child transmission, and for whom treatment options are few." In an accompanying editorial, Paul A. Krogstad, MD, of the David Geffen School of Me...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

A naturally occurring molecule in the body appears to control whether certain medications, such as beta adrenergic receptor agonists used in acute heart failure or in inhalers for asthma, lose their effectiveness over time. Nitric oxide is a molecule produced by the body...

Chemical maps hint at drug's effects on schizophrenia

.... "If we can apply these findings to the mysteries occurring in the brain, then perhaps we can finally unlock the secrets of these devastating diseases." Kaddurah-Daouk believes that this and other studies that explore metabolism at the global level have the potential to greatly impact medical practice. Fut...

Switching genes to overdrive improves muscular dystrophy symptoms in mice

...ost common type of muscular dystrophy in children, occurring once in about every 5,000 live births of boys, and...ease. The cause is a mutation, either inherited or occurring spontaneously, that affects a muscle protein called dystrophin. Spiegelman, whose laboratory disc...

Revealing the machinery underlying the 'plastic' juvenile brain

...regulate the developmental reduction of plasticity occurring in the adult visual cortex," concluded Pizzorusso ... to the developmental downregulation of plasticity occurring in coincidence with the closure of the critical period." ...

Discovery of new cave millipedes casts light on Arizona cave ecology

...urvival. Representing two distinct species (one occurring in one cave on the South Rim, the other in two caves on the North Rim of Grand Canyon), this new genus of cave-limited millipede has been confirmed by Bill Shear, a leading millipede expert at Hampden-Sydney College in Virginia. "Western U.S. c...

Corals that can fight global warming may one day help fragile reefs

... epidemics. The warm temperatures that have been occurring worldwide as a result of global warming appear to be facilitating fatal epidemics in coral reefs across the globe, according to Harvell and her co-researchers. For example, in 2005, the Caribbean experienced unusually warm weather and a spate of cora...

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