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Tag: "strength" at biology news

St. Jude study solves mystery of mammalian ears

...uding side effects of chemotherapy for cancer. One strength of St. Jude is that researchers have the ability to ask some very basic questions about how the body works, and then use those answers to solve medical problems in the future.” The long-standing argument centers around outer hair cells, which are r...

Research identifies protein that signals flowering in squash plants

...ignal in cucurbit plant species (squashes). The strength of this research lies in the nature of the experimental system utilized. The authors chose Cucurbita squash species because reliable methods for the analysis of translocation through the phloem stream have been developed in this system. However, most...

Putting feelings into words produces therapeutic effects in the brain

...ends and family during these years could shape the strength of this brain region’s response, but this is not yet established, Lieberman said. One benefit of therapy may be to strengthen this brain region. Does therapy lead to physiological changes in the right ventrolateral prefrontal cortex" Lieberman, UC...

Magnetic computer sensors may help study biomolecules

... applying an external magnetic field of sufficient strength to align the electron "spins" in the magnetic layers in the same (on) or opposite (off) directions. NIST researchers made an array of spin valves, each about one by four micrometers in size, patterned on a 200-nanometer-thick silicon nitride membrane...

Fused nasal bones helped tyrannosaurids dismember prey

New evidence may help explain the brute strength of the tyrannosaurid, says a University of Alberta...scans to investigate such factors as teeth bending strength and nasal and cranium strength. The research is published in the journal Acta Palaeontologica Poloni...

Study examines genetic risk factors for Alzheimer's disease

...o disease more work needs to be done to test their strength in other samples of volunteers.? Professor Owen, School of Medicine said: “Identifying susceptibility genes for Alzheimer’s disease provides a knowledge base for the development of potential new treatments and diagnostic tests. This study is just ...

2 brains -- 1 thought

...ssible, that is, the number of connections and the strength of the synapses should be minimal. "Applied to a real network, one could for example analyse which structural optimisation principles function in evolution," says Timme. The dynamics of a number of very simple networks that generate repetitive patter...

Mechanism of nicotine's learning effects explored

...ance memory. Such signaling properties include the strength of the connections by which one neuron triggers an...ing-dependent potentiation?that governs changes in strength of signaling connections among neurons. What’s more, the researchers traced this effect to nicotine’...

'Marathon mice' elucidate little-known muscle type

...atments might have the potential to boost physical strength and endurance in patients with a variety of muscle wasting conditions. The research team, led by Bruce Spiegelman of Harvard Medical School, found that increasing activity of the gene known as PGC-1â in the skeletal muscles of mice caused them to ...

Robotic exoskeleton replaces muscle work

...orders, those electrical signals don't arrive full strength and are uncoordinated. In addition, patients are l...atively short time, the wearers adapted to the new strength and used their muscles less because the exoskeleton was doing more of the work. Their gait normalize...

Robotic therapy helps restore hand use after stroke

A robotic therapy device may help people regain strength and normal use of affected hands long after a stroke, according to a University of California, Irvine study. Stroke patients with impaired hand use reported improved ability to grasp and release objects after therapy sessions using the Hand-Wrist...

Wired for sound: How the brain senses visual illusions

... flash, indicating that the brain's wiring and the strength of integration between the different sensory cortices may differ between individuals, or even vary over time. "It suggests that there are consistent differences in the neural connectivity that are possibly shaped during one's development and through...

Researcher to study astronaut bone loss for space biology agency

...as a signaling device to allow Long to measure the strength of the interaction between integrins and IGF-1 receptor. "Understanding this interaction, and the role it plays in how bones respond to mechanical forces, will allow interventions to protect the bones of astronauts," Long says. "We hope to fin...

New cell type identified in cancer development

...rmal, healthy mice. The results showed that the strength of the immune system affected whether or not the mice got cancer. The scientists found that the pCSCs, like normal stem cells, had the ability to create various types of benign cells in mice with healthy or recovering immune systems. These daughter c...

Cartilage discovery offers arthritis hope

...Scientists have long known that cartilage gets its strength from interlocking millimetre-long collagen fibres that work in a similar way to the load-bearing steel rods in reinforced concrete. But the precise structure of these fibres or 'fibrils' has remained a mystery for more than 40 years, so hindering a...

Scientists find potential 'off-switch' for HIV virus

...virus in its dormant phase. "SirT1 reduces the strength of the signal to replicate," Weinberger said. "It may prove to be the key part of the resistor in the circuit, as our mathematical models are strongly suggesting." Not all the molecular players are known yet, nor how their relative roles determine...

Growth hormone is not the anti-aging bullet for healthy adults

...one and other hormones, is said to increase muscle strength and mass, decrease body fat, improve mood and motivation, increase exercise capacity, increase bone density and (wink, wink) make wives and girlfriends happy. Despite these enticing claims, careful review of existing evidence does not support the ...

Brain networks strengthened by closing ion channels

... a molecular mechanism that dynamically alters the strength of higher brain network connections. This discovery may help the development of drug therapies for the cognitive deficits of normal aging, and for cognitive changes in schizophrenia, bipolar disorder, or attention deficit hyperactivity disorder (ADH...

Morphine makes lasting -- and surprising -- change in the brain

...fter repeated stimulation. This increased synaptic strength is believed to be the cellular basis for memory. In her experiments, Kauer found that LTP is blocked in the brains of rats given as little as a single dose of morphine. The drug’s impact was powerful: LTP continued to be blocked 24 hours later ?lo...

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

...ive fitness, and the ability to infer the relative strength of rivals before engaging them in potentially costly fights should be highly adaptive." When A. burtoni males fight, it's easy to spot the winner. Mature males have a menacing black stripe, or eyebar, on their face. After a fight, the winner retai...

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