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Tag: "runs" at biology news

From the deep -- Researchers find new species of sea anemone

...organismal biology at Ohio State University . Daly runs one of the very few laboratories in the world equipped to study sea anemones. "These creatures were so cool simply because we knew that no sea anemone had ever been found on a whale fall," she said. Once a whale dies, its carcass sinks to the b...

Switching genes to overdrive improves muscular dystrophy symptoms in mice

...en again 24 hours later. Normal mice completed the runs easily on both days, while untreated MDX rodents were exhausted halfway through each run. The MDX mice with increased PGC-1alpha activity performed almost as well as normal mice on the first day; their performances decreased on the second day, but th...

UCLA study uncovers clues for why Graves' disease attacks the eyes

...t often strikes during the childbearing years, and runs an average course of one to two years. No cure exists, though surgery can be done at the end stage to correct disfigurement....

Gene tests and brain imaging reveal early dementia

...tainty, but things are made easier if you know who runs the greatest risk," she says. "If genetic mapping, MRI and cognitive tests all suggest approaching Alzheimer's, it might be an idea to start a course of treatment." ...

How trees manage water in arid environments

... by evaporation into the dry air. Most of the rest runs off before it can soak into the ground. Maintaining an adequate supply of water is a constant challenge, and water management is a top priority. One way to make better use of scarce water resources would be to retain more of the water that falls d...

Scientists find potential 'off-switch' for HIV virus

...ical circuit, but a set of chemical reactions that runs in a loop. First, one of HIV's genes creates the Tat protein, which is part of the chemical signal for the virus to begin replicating. An important player to complete the signal is an enzyme within the T cell called p300 that decorates the Tat protei...

Twin studies reveal genetic components leading to cardiac and kidney disease

...s link is due to a genetic variation and therefore runs in families. Heredity and Kidney Disease The same twin pool study revealed the influence of heredity on renal protein (albumin) excretion. Excretion of the protein albumin in urine is one sign of kidney disease, which can be a complication o...

Severe mental retardation gene mutation identified

... and may not have language ability. The condition runs in families and only affects the male offspring. So far only a few of these genes have been identified. Working through a large, international collaboration, the researchers collected genetic samples from 250 families in which at least two boys...

Walking molecule now carries packages

...cs Stories for 2005." The new molecule carrier runs on a copper surface. It can pick up and release up to two carbon dioxide (CO2) molecules and carry them along its straight path. "Carrying a load slows the molecule down" explained Bartels. "Attachment of one CO2 molecule makes the carrier need tw...

Pacific Rim researchers to collaborate on distributed bioinformatics analysis of avian flu

...of the TATRC award coincides with PRAGMA 12, which runs March 20-22 in Bangkok, Thailand. The meeting is hosted by Thailand’s National Electronics and Computer Technology Center (NECTEC), and the Thai National Grid Center (TGNC). Five non-U.S. partners have pledged to fund collaboration on the avian fl...

Motor protein plays key role in connecting neurons

A motor protein called myosin X runs the main road of a developing neuron, delivering to its tip a receptor that enables it to communicate with other neurons, scientists say. In another piece of the puzzle of how neurons form connections, researchers have found myosin X travels a po...

Brain works more chaotically than previously thought

...rkable discovery. As soon as an electrical impulse runs through an axon cable, tiny bubbles containing glutamate travel to the axon membrane and release their content into the brain. Glutamate is one of the most important neurotransmitters, being released when signal transmission occurs at synapses. The r...

Negative effects of caffeine are stronger on daytime sleep than on nocturnal sleep

...chology at the Université de Montréal. Dr. Carrier runs the Chronobiology Laboratory at the Hôpital du Sacré-Coeur de Montréal. "We already knew that caffeine has important effects on nocturnal sleep. It increases the time taken to fall asleep, it increases the amount of awakenings, and it decreases the...

Key to lung cancer chemo resistance revealed

...m for destruction. In cancer cells, NRF2 activity runs amok, sweeping away all cellular toxins, including chemotherapy agents. Biswal says that blocking NRF2 activity could improve the effectiveness of standard chemotherapy drugs, particularly platinum-based compounds widely used for lung cancer. I...

Giant insects might reign if only there was more oxygen in the air

...ly so big, and limits the size of the trachea that runs through it. When tracheal size is limited, so is oxygen supply and so is growth, Kaiser explained. Using the disproportional increases they observed among the beetles, the researchers calculated that beetles could not grow larger than about 15 cen...

Disappearing nest egg: Researcher studying declining numbers of macaws

... the Amazon rain forests of eastern Peru, where he runs a long-term macaw research project. He has learned that one reason the macaw populations are declining is due to the popularity of the Aguaje palm. It's highly-sought after by the local people for its fruit ?the nearby city of Iquitos consumes...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...mall molecular ions formed when a focused ion beam runs across the surface of a sample. ''You take everything in the beam's focal area, which is about 100 nanometers in diameter and about 10 nanometers deep for our experiment, and you obliterate it,'' Boxer said, explaining how the machine works. ''Then y...

Weizmann Institute scientists discover a molecular security mechanism for keeping mutations in check

... This enzyme can be a stickler for accuracy ?if it runs into damage from radiation or exposure to harmful substances on the DNA strand, it can stop in its tracks, unable to continue copying. A stoppage of this sort spells death for the cell. But not all damage to DNA is critical and, to avoid the wholesal...

Taking the wrinkles out of motoneuronal disease

...commercialisation company, UniQuest Pty Ltd, which runs the annual Trailblazer competition. UniQuest Managing Director David Henderson said the Trailblazer judges were impressed by Dr Meunier's research and the opportunities surrounding it. "The therapeutic applications of this research are important, a...

Ecosystem services and invasive species

...t Hall, Cook Convention Center The Hatchie River runs 220 miles through western Tennessee. David Kesler, Naomi Van Tol (Rhodes College), and colleagues from the Tennessee Wildlife Resource Agency returned to the Hatchie River some 25 years after other scientists to document changes in the freshwater mu...

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