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Tag: "effect" at biology news

Batten down the hatches against HIV

... Chemie that this allows for much better silencing effect to the cells than current transport systems based on liposomes. T-cells are one of the types of white blood cells important for a good immune defense; they detect and destroy virus-affected cells. However, they themselves are among the targets att...

Protein key to organ growth

...rough a series of studies that concentrated on the effect of the protein on the eyes and wings, elucidated t...und when the protein is lacking, it has a profound effect on flies. However, too much does not cause tumor growth. Choi is also a faculty member of the BCM Gr...

Boosting brain power -- with chocolate

...onsumed a single drink of flavanol-rich cocoa. The effect is linked to dilation of cerebral blood vessels, a...r two to three hours. "The demonstration of an effect of consuming this particular beverage on cerebral blood flow raises the possibility that certain foo...

Leukemic cells find safe haven in bone marrow

...by certain cells in the bone marrow counteract the effect of that drug, according to investigators at St. Ju...d produce asparagine. In this case, the protective effect of mesenchymal cells was eliminated. Conversely, when the researchers caused the ASNS gene to work o...

Salamanders suffer delayed effects of common herbicide

...e showing up over the long term, such that the net effect of atrazine exposure was even worse later in life than it was while the animals were being exposed. "The biggest surprise was that it took nearly a year to detect the effects of atrazine at 4 parts per billion, which is just 1 part per billion abo...

In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air

... the ozonolysis purifier resulted in no detectable effect on the particle level. When limonene was added to the room, the particle concentration shot up in both cases, on some occasions up to 100 times the original level. Adding limonene to the room when a purifier was not operating produced little change i...

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

...of the animal’s system. "The persistence of the effect was stunning," Kauer said. "This is your brain on ...ine, also increase dopamine release. So the net effect of morphine and other opioids, Kauer found, is that they boost the brain’s reward response. "It’s as...

Ultrathin films deliver DNA as possible gene therapy tool

...posed to the gene therapy. "We ultimately need an effect prolonged enough to be therapeutically relevant - ... recent designs erode like a bar of soap, with the effect that outer layers are released before inner layers. By placing one gene in the outer layers and ano...

Hay fever can send work productivity down the drain

... eyes and sneezing as having a moderately negative effect on their productivity at work. While hay fever may remain a fact of life for millions of people, Szeinbach points out the importance of a proper diagnosis. The majority of study participants (405) had a traditional skin-prick test, in which a drop...

Killing the messenger RNA -- But which one?

...edited version of the microRNA in question had the effect of driving production of the PRPS1 enzyme to about double its normal levels. This, in turn, drove levels of uric acid up to about two times what they should be. "This confirmed that our original computer prediction of differential targeting by une...

New dopamine brain target discovered

...n calcium in the brain. As calcium has a profound effect on almost all brain function, this rise in calcium causes a cascade of events in the brain. This is the first time that a direct connection between dopamine and calcium signals has been reported. "This distinct unit provides a novel signalling...

Fish growth changes enhanced by climate change

... Oreo and Orange roughy. Because of the pervasive effect of temperature on the physiology and growth of marine animals, it was likely that similar effects would be seen in many other species. The science team examined 555 specimens ranging in age from two to 128 years, with birth years from 1861 to 19...

How T lymphocytes attack

...ies it implements may increase the immune system's effect on tumour cells and thus improve the clinical perspectives for anticancer immune therapy. At the Institut Curie, INSERM and CNRS researchers have used two-photon microscopy to demonstrate, for the first time in vivo and real-time, how T lymphocytes ...

Satellites shed light on global warming

...and climate. Faster waves in a warmer ocean, as an effect of climate change, may result in complex repercuss... the sea, therefore they are believed to have some effect on phytoplankton ?the tiny chlorophyll-pigmented algal cells that populate the oceans in huge number...

Bacterial response to oxidation studied as toxin barometer

...It is a good sensor because it measures biological effect rather than concentrations,?Rzigalinski said. “So we can measure oxidative damage when we stick the sensor in the water, not individual concentrations of individual chemicals. It also announces the presence of an oxidative toxin you haven’t identifie...

MIT: Pulsing light silences overactive neurons

...age and silencing their firing. That inhibitory effect may be extremely useful in dealing with diseases caused by out-of-control neuron firing, said Boyden. "In such diseases, inhibition is more direct than excitation, because you can shut down neural circuits that are behaving erratically," he said. ...

Creating new life forms that may help eradicate cancer affecting women

...in the body, it has a powerful, direct stimulatory effect on the activities of tumor-killing T cells. "Essen...uccessfully attack cancer cells. The bacterium in effect then becomes a cancer-fighting 'Trojan horse,' with the enemy tucked inside." For breast cancer,...

Minuscule molecules pack a powerful punch

... not know whether microRNA knockouts would have an effect in mice: previous knockout studies in nematode worms suggested that most microRNAs were not essential. Our findings were dramatically different." The effects of the miR-155 knockout swept across the immune system. The team showed that, although kn...

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

...l trial to test whether the compound has a similar effect in humans with Down syndrome. "This treatment has.... "So many other drugs have been tried that had no effect all. Our findings clearly open a new avenue for considering how cognitive dysfunction in individuals...

Magic Beans -- Anti-obesity soya could help prevent diabetes

...don, thinks that the soya protein may be having an effect on fat metabolism in the liver and adipose tissue,... fatty acids and cholesterol. It is this metabolic effect that may explain the traditional Asian use of black soya in the treatment of diabetes. ‘The key prob...

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