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Tag: "actions" at biology news

Releasing fish for the future

...ing targeting. Dr Broadhurst said some of these actions were found to massively boost fish survival. “Simply cutting the line rather than attempting to remove hooks swallowed by mulloway and yellowfin bream increased their survival from 12 percent to more than 85 percent. “Up to 76 percent of the ...

Stroke study sheds light on left-right brain divide

... side of the brain has in keeping track of our own actions and helping us to notice when we have made mistakes,’ Dr Hodgson added. ‘This type of “self-monitoring” function may play a crucial role in many day to day situations. For example, when preparing a meal we often have to keep track of several tasks at...

Undergraduate research shows leaderless honeybee organizing

...y activities are initiated by the cumulative group actions of the colony’s older workers, not by the queen’s individual decision. What Pierce and colleagues found was that older workers gave signals to the queen and to the rest of the colony that it was time to swarm and leave the hive. Later, they were a...

Researchers shed light on mechanism of action used by anti-cancer drug

...h increased protein loads. The net effect of these actions was to induce a shutdown of protein synthesis accompanied by a dramatic increase in cell death. “The notion that sorafenib acts by inhibiting protein synthesis and reducing expression of Mcl-1 suggests that this agent might be logically combined ...

Nurtured chimps rake it in

...text because they have heightened attention to the actions of others.” ...

Prey not hard-wired to fear predators

...lter our big remote wild landscapes, but so do the actions of conservationists and public agencies by restoring ecosystems to bring native carnivores back to where they once thrived.” said Dr. Berger. Berger’s study, which looked at 19 areas including the Russian Far East, Greenland, Canada, and the U.S....

Confirmed -- deforestation plays critical climate change role

... the atmosphere. "Globally, we need a range of actions to reduce the build up of carbon in the atmosphere," Dr Canadell says. "This study ensures we have a sound scientific basis behind the consideration of deforestation reduction."...

Do fruit flies have free will?

...n oxymoron: the term 'will' would not apply if our actions were completely random and it would not be 'free' if they were entirely determined. So if there is free will, it must be somewhere between chance and necessity - which is exactly where fly behavior comes to lie. "The question of whether or not we hav...

UCLA study uncovers clues for why Graves' disease attacks the eyes

...the excess receptors on the T-cells, mimicking the actions of a hormone called IGF-1, or insulin-like growth factor 1. Similar to insulin, IGF-1 stimulates cell growth while suppressing normal cell death. The team suspects that this mechanism prolongs the survival of older T-cells, causing a cascade of aut...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...conditions, eclipsed by a range of other stem cell actions that nevertheless exert a number of critical stabilizing forces," said Dr. Snyder, director of Stem Cells and Regeneration at Burnham. "In fact, our study offers the first evidence that stem cells employ multiple mechanisms -- not just cell replaceme...

Antifungal drug kills TB bug

...able to kill off fungal infections by blocking the actions of one of its P450s that is essential for maintaining the cell structure," said Professor Munro. "We were able to show in laboratory experiments that various types of these azole drugs were also very good at killing the TB bacterium, and also that th...

Reading hidden intentions in the human brain

... regions of the prefrontal cortex which of the two actions (addition or subtraction) individuals had chosen to pursue. Different patterns of activity were seen during actual execution of the task, showing that regionally distinct neural substrates were involved in task preparation and execution. Decoding of ...

Turning green gunk to gold, anti-cancer gold

... techniques with a knowledge of the properties and actions of enzymes, scientists have been able to produce an exciting class of anti-cancer drugs originally isolated from blue-green algae. This accomplishment is expected to make it possible to produce enough of the promising drugs for use in clinical tria...

What's in the water? Estrogenic activity documented in fish caught in Pittsburgh's rivers

...ittsburgh rivers contain substances that mimic the actions of estrogen, the female hormone. Since fish are sentinels of the environment, and can concentrate chemicals from their habitat within their bodies, these results suggest that feminizing chemicals may be making their way into the region's waterways. ...

Twin studies reveal genetic components leading to cardiac and kidney disease

...n, suggesting new strategies to probe the role and actions of this pathway in inflammation. This study was published in the February 2007 issue of the Journal of Hypertension. Genes and Vascular Disease In a study on line in advance of publication in the May 1 edition of Circulation the UCSD team rep...

Re-analysis of cigarettes confirms tobacco companies increased addictive nicotine 11 percent

...hrouded in secrecy, hidden from the public. Policy actions today requiring the tobacco industry to disclose critical information about nicotine and product design could protect the next generation from the tragedy of addiction." Said Connolly: "Our findings call into serious question whether the tobacco i...

Active ingredient in common Chinese herb shown to reduce hypertension

...right carotid artery. To examine the microvascular actions of tanshinone IIA researchers applied it topically to the hamsters¡¯ cheek pouch or mice cremaster muscles to achieve the final concentration of one ¦Ìg/ml or five ¦Ìg/ml. After the application of tanshinone IIA, the experiment was continued for an a...

Primitive yeast yields secrets of human cholesterol and drug metabolism

...began with the hunt for factors that influence the actions of a large family of enzymes called cytochrome P450. These enzymes control many life-sustaining chemical reactions in humans and other animals. Happily, Espenshade says, yeast have only two P450 enzymes, and both play roles in making cholesterol, ...

Living with water scarcity -- world must act now

...d the increased use of biofuels, and the necessary actions to address these. "The bottom line is that water scarcity is with us to stay, and we have to learn to live with it. This will require making some hard choices now instead of deferring them until later," says Molden. It starts at home. Jan Lun...

How to manage forests in hurricane impact zones

...ina and Rita to illustrate the major decisions and actions that must be taken after a major event. These include rapid assessment of damage, protection of timber resources and recovery of value, management of second order events such as wildfire, protection of other resources such as endangered plants and an...

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