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Tag: "tips" at biology news

Clot-dissolving agent may be beneficial in treatment of severe frostbite

... include superficial frostbite, involvement of the tips of the distal phalanges and contraindications to tPA, including concurrent trauma, neurological impairment or recent surgery or hemorrhage.” “Additional studies are warranted to confirm our findings and to determine the best methods of assessing t...

Scripps research team sheds light on long-sought cold sensation gene

...em. TRPM8 codes for an ion channel found at the tips of sensory neurons, which innervate the skin. When opened, ions flowing through TRPM8 lead to the activation of the sensory neuron, which in turn sends a signal to the brain. The Patapoutian team’s results support the idea that activation of TRPM8 by...

How to steer a moving cell

...h cones." These are specialized structures at the tips of growing nerve fibers, called axons, which sense guidance signals in their environment and "steer" the axons. Cell movement also requires polarization to position the cell and help navigate its movement. Polarization is characterized by formation...

Newborn neurons like to hang with the 'in' crowd

.... However, as the new neurons matured, the tiny tips filled out and started to monopolize the synaptic connections. "That's what we believe is the crux of the study: the survival of new neurons may depend on the ability to compete out the older existing neurons," says Gage. Earlier studies had shown th...

DNA ends: Common tool, different job

...e function at chromosome ends, ensuring that these tips do not become targets for DNA repair." ...

Update on census of world's most endangered cat -- Female Amur leopard found dead

...ause a female Amur leopard was killed. Anonymous tips led officers of two leopard anti-poaching squads to the body of the leopardess on April 20 about two miles from Bamburovo village within the watershed of Alimovka River on the territory of Barsovy National Wildlife Refuge. The next day veterinaria...

Cancer cells forming blood vessels send their copper to the edge

...etween 80 and 90 percent of cellular copper to the tips of the tendril-like projections angiogenic cells send out between one another and across the cellular membrane within the first two hours." Copper did, indeed, appear to play a special role in angiogenesis, at least on the basis of this observation. ...

Osteoarthritis may be sign of faster 'biological ageing'

...ing of telomeres, the length of DNA which caps the tips of chromosomes. A host of factors make them shorten over time, including insufficient repair of the damage caused by oxygen free radicals (oxidative stress). Oxygen free radicals are the unstable molecules produced as a by-product of normal bodily ...

New study aims to stop sepsis in its tracks

...aim to develop a blueprint, complete with lists of tips and traps, to help hospitals adopt standardized methods for evaluating and treating early sepsis patients. ...

Ferns provide model for tiny motors powered by evaporation

...tes, the surface tension of the water pulls on the tips of the ribs so that the tips move toward each other, straightening out the spine of the device. In this way, the closed device op...

Holiday gluttony can spell disaster for undiagnosed diabetics

...et the stage for developing diabetes. Long-term tips include: If you are overweight, try to lose 5 percent to 7 percent of your body weight through exercise and eating right. Exercise regularly. Walk at least 30 minutes a day. Eat a nutritious diet high in fiber and whole grain. Reduce ...

'Mindless autopilot' drives people to underestimate food decisions

...s resolutions, Wansink offers these research-based tips from his recent book, "Mindless Eating: Why We Eat More Than We Think" (Bantam Books): Use smaller bowls: People who served themselves foods into smaller serving bowls ate almost 60 percent less than when they are served helpings in larger bowl...

How does a zebrafish grow a new tail?

...sue and repair minor injuries to bone, muscle, the tips of our toes and fingers, and the corneas of our eyes. Finding out more about the remarkable ability of amphibians and fish to re-grow complex parts might provide the information necessary to create treatments for people whose hearts, spinal cords, ey...

'Cellular antennae' on algae give clues to how human cells receive signals

...like system that ferries molecules to and from the tips by a process called intraflagellar transport, or IFT. The UT Southwestern researchers used a mutant temperature-sensitive strain of the alga that behaved normally at lower temperatures. At higher temperatures, however, the IFT process stopped, and ...

Spinal cord bridge bypasses injury to restore mobility

...e medical community also assumed that the cut axon tips died when they hit the scar wall. In prior research in his lab by his graduate student, Tom, it was discovered that axons are alive and continue to attempt to grow for years. Silver describes them as "trucks stuck in mud going no where." It also e...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

...force, and moved with extreme precision across the tips of nanowires, which are only about 200 atoms in diameter and less than a hundredth of the width of a human hair in length. "We knew we had the perfect surface on which to analyze drops of blood and other biological fluids because the trapped air be...

Genetic tug of war determines sexual differentiation

... victory leads to the formation of a testis. What tips the balance in favor of male is a third gene, Sry, located on the Y chromosome in the genome and known to be the primary sex-determining gene in mammals. When this gene becomes activated at a crucial moment in the early gonad's development, it favors...

New organic substrate

...ch, once used, have to be selectively removed from tips and rubbish dumps. On the other hand, wood fibre, as with peat, are recyclable organic substrates, i.e. after its first use it can be reintroduced into the soil, as if it were manure being applied to the crop field. Defibreing the wood To obtai...

New mechanism for essential genome-wide gene silencing identified

...ightly higher levels of sumoylation occur near the tips of the chromosomes, the telomeres, which are known to play a central role in maintaining genomic stability. Instability in the telomeres has been linked to aging in humans and an elevated risk for aging-related diseases, the most prominent of which i...

The evolution of food plants: Genetic control of grass flower architecture

...defined number of leaves, whereas ears form at the tips of compact axillary branches. Normal maize ears are unbranched, and tassels have long branches only at their base. Many different genes control the architecture as well as the nutrient content in cereal grasses. The ramosa2 (ra2) mutant of maize h...

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