Tag: "arm" at biology news

Identified main genetic variants involved in response to HIV

...ng AIDS. These variations are located in the short arm of chromosome 6 in genes controlling HLA-B and HLA-C molecular systems, responsible for the activation of the immune system so that it is able to locate and destroys cells infected by HIV. This study has also identified a third genetic variation invo...

New bacterium discovered -- related to cause of trench fever

...r. “The bacteria were eating away a bone in the arm of an AIDS patient – for months,” Koehler recalls. “They can cause extremely painful lesions and tumors of blood vessels on the skin of immunocompromised patients. But when I saw this patient, this type of infection had never been seen at UCSF, and ...

Antarctic icebergs -- Hotspots of ocean life

... reach their targets in the remote Weddell Sea, an arm of the Southern Atlantic Ocean that cuts into the Antarctic continent southeast of Cape Horn. The icebergs in the study were up to a dozen miles long and more than 120 feet high, with one extending nearly 1,000 feet into the depths. Despite the r...

Bypassing eggs, flu vaccine grown in insect cells shows promise

...ally reported from a typical flu shot ?mainly mild arm pain. Then, in the months that followed, there were seven cases of flu in the group that had not received the vaccine, compared to two cases in the group that received the smaller dose, and no cases in the group that received the larger dose. Toge...

Cancer-killing invention also harvests stem cells

...y. This shunt would reside on the exterior of the arm or be implanted beneath the skin. Some of the blood flow would bypass the capillary bed and instead go into the shunt, which could remain implanted for many weeks, continually removing and killing cancer cells. King's first targets are colorectal c...

Secret of worm's poison pill box protein could produce new natural insecticide

...the University of Warwick’s horticultural research arm Warwick HRI, have now been able to reveal the shape of the protein XptA1 and discovered a number of properties that make it a particularly efficient natural insecticide and possible alternative to some commercial insecticides that are facing increa...

Carnegie Mellon University research shows how sensory-deprived brain compensates

... a brain injury is made to use a poorly performing arm with the expectation that the brain may be plastic enough to assist that arm in recovering motion. "We think that our well-designed model is extremely good for future in...

Scientists unlock mystery of embryonic stem cell signaling pathway

... What IQ-1 does, Kahn explains, is to block one arm of a cell-signaling pathway called the Wnt pathway..., while enhancing the signal coming from the other arm of the Wnt pathway. The Wnt pathway is known to have dichotomous effects on stem cells i.e. both pro...

Tiny clue reveals new path toward heart disease

...nd just such a region: a small section of the long arm of chromosome 3 where just a handful of genes were located. Chromosome 3 is one of the 23 pairs of chromosomes that comprise the human genome. In the current study, the researchers focused on specific gene variants, called single nucleotide polymo...

A steady, high-fat diet is bad, but the news gets worse

...e about something emotionally provocative, held an arm in ice water, and had a blood pressure cuff inflated around an arm, which gradually causes a dull ache. "Regardless of the task, we recorded greater reactivity among those who consumed the high-fat meal in several cardiovascular measures we r...

Lead-'scrubbing' drug may also improve muscle function in lead-exposed children

...h elevated blood lead levels enrolled in the local arm of a randomized, placebo-controlled clinical trial conducted nationally by the Centers for Disease Control and Prevention and the National Institute of Environmental Health Sciences (NIEHS). Postural balance and gait tests were performed only after e...

Meeting the ethanol challenge: Scientists use supercomputer to target cellulose bottleneck

...of the role of velocity, trajectory, movement, and arm angle. To undertake the large-scale simulations, the researchers used the CHARMM (Chemistry at HARvard Molecular Mechanics) suite of modeling software. According to the researchers, an accurate understanding of the key molecular events required th...

Hay fever can send work productivity down the drain

... which a drop of allergen is placed on a patient's arm or back. The physician then pricks the skin through the drop, which lets the allergen enter the body. The doctor and patient then wait for a reaction, which could indicate an allergy. About one out of five participants in the study underwent a blo...

Cancer scientists create 'human' leukemia process to map how disease begins, progresses

... Dr. Dick, Senior Scientist at OCI, the research arm of Princess Margaret Hospital, and a Professor in the Department of Molecular Genetics, University of Toronto, said: "Most human leukemia research involves studying a patient's diseased cells or a cell line grown from those cells. However, since canc...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...In the maze test, mice were habituated to the long arm of a T-shaped maze and then allowed to explore. Wi...ce tended to investigate first one, then the other arm of the maze, while untreated Down syndrome mice were less methodical. However, the Down syndrome mic...

New test helps identify hepatitis C patients at high risk of developing cirrhosis

... Affairs Health Care System, who led the Stanford arm of the study. "This test is the first of its kind to use the genetic makeup of each patient to determine who is likely to develop cirrhosis. High-risk patients should be targeted for early treatment." The test looks at variations of seven genes...

Brain works more chaotically than previously thought

... pass until they meet, at a synapse, the dendritic arm of another neuron. The synapse presents an insurmountable barrier to the neuron's electrical pulses. The brain overcomes this obstruction by means of an amazing signal conversion: the synapse releases chemical messengers, known as neurotransmitters, ...

Research project tackles 'regeneration' gap

...live to be 80. But we can’t do things like grow an arm or finger as we did in the early stages of our development. We want to learn how to turn those systems back on in people." Recently, studies have shown humans possess some of the same genes and communication pathways used by some of nature’s most ...

Researchers show that veins stiffen as we age

...nd legs. An arterial cuff was attached to an upper arm to monitor blood pressure, and venous cuffs were placed around the upper thigh and upper arm to measure the blood flow to the limbs. As the cuffs were inflated over an eight-minute period, an...

Teenager moves video icons just by imagination

...stance, enabling the disabled to move a prosthetic arm or leg by thinking about it. Many gamers think fondly of Atari's Space Invaders, one of the most popular breakthrough video games of the late '70s. The player controls the motions of a movable laser cannon that moves back and forth across the bott...

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