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Tag: "mobility" at biology news

St. Jude study solves mystery of mammalian ears

...es that showed in mammals that the role of somatic mobility driven by prestin is not simply to modify the response of the outer hair cells’ cilia to incoming sound waves in the cochlea fluid. Instead, somatic motility itself appears to dominate the amplification process in the mammalian cochlea, while the cil...

In nature, proteins sweep up nanoparticles

... aggregate, we have the potential to control their mobility in the subsurface by adding constituents that drive aggregation,” says Banfield. The scientists also sought to understand the mechanism by which proteins promote nanoparticle aggregation. They found that the presence of cysteine, an amino acid tha...

Human stem cell treatment restores motor function in paralyzed rats

...alking at six weeks, and three others had improved mobility in all lower extremity joints. All nine animals gr...oal is to provide a significant gain in functional mobility of the patient’s legs. This study builds on Marsala’s previous work in rat models using human neu...

Swell gel could bring relief to back pain sufferers

...bility of human patients being able to regain full mobility and flexibility after receiving spinal injections....or the patient, resulting in a significant loss of mobility at the fused and adjacent discs. Degeneration of intervertebral discs causes holes in the load-be...

New fMRI technology making brain tumor surgery safer

...fMRI data, which pinpoint language, cognition, and mobility centers of the brain, allow neurosurgeons to remove tumors to the greatest extent possible without harming areas that are critical to the patient’s quality of life. Functional MRI creates a series of images that capture blood oxygen levels in part...

Researchers to develop active nanoscale surfaces for biological separations

...ne and his colleagues recently discovered that the mobility of DNA molecules is closely coupled to the movement of the underlying lipid bilayer. "The advantage of these surfaces is that they can be actively modified," Kane said. "Thus by changing the temperature, shining light, or applying an electric fiel...

Particle size matters to bacteria ability to immobilize heavy metals

...als on them. As a result, Shewanella influence the mobility and bioavailability of iron and environmental cont...ht influence the environment and contaminant metal mobility in our rivers, lakes and other surface waters, as well as groundwater," said Bose. He will present...

Gene therapy research switches off joint inflammation; switches on genetic process of joint repair

...lled clinical trial will assess a variety of pain, mobility and functional assessments in subjects with moderate osteoarthritis of the knee. Prior to this clinical investigation Reparagen was found to be the first natural product to "silence" genes that promote joint damage while simultaneously activating the...

Biological motors sort molecules one by one on a chip

...this orientation-dependency of the electrophoretic mobility was observed. In an accompanying Perspective article in Science, Professor Hess of the University of Florida wrote that the Delft researchers had developed the first traffic control system in biomolecular motor nanotechnology. ...

Gene therapy injected into the brains' of mice with Huntington's disease

...t abnormalities, hypokinesia (abnormally decreased mobility and motor function), hind limb clasping behaviors and muscle weakness. One control group of mice did not receive any gene therapy. A second control group was injected with a placebo gene therapy. The third group received the active GDNF gene therap...

Spinal cord bridge bypasses injury to restore mobility

...he spinal cord. It brought about markedly improved mobility for the seven rats given the chondroitinase treatment. A control group of five rats underwent the same procedure. Instead of the chondroitinase, they were given a saline solution. None showed any nerve growth out of the bridge or improvement in th...

MIT 'seeing machine' offers hope to blind

...he machine "may have the potential to assist their mobility in unfamiliar environments," according to the Optometry article. Concluded Goldring: "A couple of them said they'd tried every seeing aid available (magnifying devices, etc.), and this was by far the best, even in this rough, rough shape." Goldring ...

Avian flu modeled on supercomputer, explores vaccine and isolation options for thwarting a pandemic

...n that matches U.S. census demographics and worker mobility data by randomly assigning the simulated individuals to households, workplaces, schools, and the like. Department of Transportation travel data is used to model long-distance trips during the course of the simulation, realistically capturing the spre...

Stem cell transplants improve recovery in animal models for stroke, cerebral palsy

...f animals that had experienced significant loss of mobility and other functions. The stem cells used in the study were a recently discovered stem cell type, referred to as multipotent adult progenitor cells, or MAPCs. Treated animals experienced at least 25 percent greater improvement in motor and neurologi...

Nobelist discovers antidepressant protein in mouse brain

...p11 genes, compared to control mice, had increased mobility in a test that is used to measure antidepressant-like activity. They also had more 5-HT1B receptors at the cell surface that were capable of increased serotonin transmission. The opposite occurred when researchers molecularly knocked out the p11 ge...

Ahead of the game

...aditional biogeographical barrier [of] Neanderthal mobility represented by the Caucasus Mountains." ...

HIV/AIDS rates in Tijuana, Mexico increasing at alarming rate

...he border are urgently needed, because of the high mobility between Tijuana and San Diego County," said Brouwe...ing the HIV epidemic in Tijuana. The population's mobility is also a consideration; 64% of Tijuana residents report crossing the border into the United States ...

Exercise aside, genes may ultimately dictate seniors' mobility

...d. Understanding the mechanisms of how people lose mobility may lead to ways to help people remain independent...g and strenuous exercise, and they preserved their mobility longer than the 70 percent who engaged in little or no physical activity. Researchers also evaluated...

'Jumping genes' contribute to the uniqueness of individual brains

...ns to develop in distinctly different ways. "This mobility adds an element of variety and flexibility to neur...ure generations. "But nobody has ever demonstrated mobility convincingly in cells other than germ line cells," says Gage. Apart from their activity in testis a...

Neandertal femur suggests competition with hyenas and a shift in landscape use

... in the shape of the femur that a shift to greater mobility had already begun prior to the transition to the Upper Paleolithic, prior to any appearance of modern humans in Europe. In addition, the cave was a hyena den at about the same time that the humans lived in it, the authors say. Archeological evidence...

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