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Tag: "changed" at biology news

One species, many genomes

...logy used so far can only identify genes that have changed or are lost relative to the reference genome, direct sequencing of the genome of wild strains will allow the detection of new genes. The plan is to decipher the genomes of at least 1001 Arabidopsis varieties. A new instrument, with which the entire g...

Releasing fish for the future

...tality rates can be significantly improved through changed practices. Key recommendations from an initial two-year project are that fishers should Cut the line on fish that swallow hooks Remove hooks caught in the fish’s mouth Minimise air exposure Use landing nets without knotted mesh Ma...

U-M researchers discover gene switched off in cancer can be turned on

...crucial as the death rate from lung cancer has not changed in 30 years. Newer treatments are much less toxic and extend lives by months, but the same people who died from lung cancer 30 years ago, would still succumb to this disease today. Targeted therapies have dramatically improved cancer care in recen...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

..., as well as images showing how protein expression changed in cells. After scrutinizing the images for hours, During finally identified one protein that seemed to disappear upon exposure to anthrax. The protein turned out to be responsible for gathering the components of actin and shuttling them to the cente...

Rapid response was crucial to containing the 1918 flu pandemic

... to predict what would have happened if cities had changed the timing of interventions. In San Francisco, which they found to have the most effective measures, they estimate that deaths would have been 25 percent higher had city officials not implemented their interventions when they did. But had San Francis...

New report: Explosive growth changes salmon industry

...on has dramatically increased total salmon supply, changed the kinds of salmon products that are available, altered the timing of production and raised market quality standards. These changes have raised economic, environmental and trade questions. For example, how does wild salmon, which no longer provides...

Nanotextured implant materials: blending in, not fighting back

...y smooth at the nanoscale. When the researchers changed the surface texture of implant materials to better match the natural texture of the endothelium, they found that endothelial cells quickly colonized the foreign surfaces, effectively camouflaging them and preventing smooth muscle cells from overgrowi...

'Marathon mice' elucidate little-known muscle type

...ared to only 15%?0% in normal animals. PGC-1â also changed the muscles' metabolic characteristics by driving the activity of genes that spark proliferation of mitochondria. The PGC-1â animals with more IIX muscle fibers showed a greater capacity for aerobic exercise, they found. Transgenic mice were able ...

Study examines risk of soft tissue sarcomas in hereditary retinoblastoma survivors

...addition, classification schemes for some sarcomas changed over the study period, so some cancer subtypes may have been classified differently depending on the year they were diagnosed. "Given the excellent survival of retinoblastoma patients, it is important that survivors continue to undergo regular medi...

Drug-resistant bacterial infections serious complication after corrective eye surgery

...ultured and found to be MRSA, his antibiotics were changed and his vision recovered to 20/200 over the next two weeks. The patient is awaiting further surgical treatment. Writing in the article, Eric D. Donnenfeld, MD, advises that, "MRSA infectious keratitis is a potentially serious complication followin...

UTSA researchers examine effects of global warming on Antarctic

... at the totality of it, it appears as if it hasn't changed very much over the last 30 years, but it has. Even though we're only seeing these regional changes and not a systemic decline in the amount of ice cover, it is still significant in terms of the way the regions are responding and we're finding that i...

A rarity among arachnids, whip spiders have a sociable family life

...s and found that the siblings grouped together but changed their location daily, suggesting individuals preferred proximity to each other over a specific location. When siblings were removed from a familiar cage and scattered about another large unfamiliar cage, within minutes, they gathered back together. ...

Indicators for risk of heart disease are higher in passive smokers

...ased on self-reported exposure. The association changed little even after researchers adjusted for participants' self-reported fruit and vegetable consumption ?one of the more influential aspects of diet on cardiovascular health ?and for lifestyle factors such as physical activity, social class and obesit...

Hofmeyr skull supports the 'Out of Africa' theory

...ontological evidence. The skull from Hofmeyr has changed that. The surprising similarity between a fossil skull from the southernmost tip of Africa and similarly ancient skulls from Europe is in agreement with the genetics-based "Out of Africa" theory, which predicts that humans like those that inhabited E...

Mummy's amazing American maize

...y thought. "The entire culture of South America changed when the Europeans arrived in the 15th century ?everything from the language to the whole way of life," explained Professor Terry Brown, who headed the research in the Faculty of Life Sciences. "Maize is the staple food crop of the region but prio...

Scientists find new genetic clue to cause of Alzheimer's disease

...ents, they found that altering the levels of SORL1 changed the way APP was moved around in cells, with low levels of SORL1 resulting in increased production of amyloid beta fragments while high levels decreased production. However, the researchers note, other genetic and non-genetic factors are likely to aff...

New research says winning a Nobel Prize adds nearly 2 years to your lifespan

...the Nobel Prize fund - the real value of which has changed over time. By comparing the possible effects of that variation, they found that the amount of actual prize money won by Nobel prize winners had no effect on their longevity - suggesting that it is the sheer status boost of the award that is important...

Birth rate, competition are major players in hominid extinctions

...mals that reproduce slowly. However, when climate changed so that tropical forests shrunk and the environment became patchy, many species including primate species became extinct. "While past primate populations moved with the forest, early hominid cultures 2.5 million years ago show signs of the ability...

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

... serious question whether the tobacco industry has changed at all in its pursuit of addicting smokers since signing the Master Settlement Agreement of 1998 with the State Attorneys General. Our analysis shows that the companies have been subtly increasing the drug nicotine year by year in their cigarettes, w...

Resistance to anti-HIV drugs in Uganda developed due to drug supply problems

...sco General Hospital. The climate in Uganda has changed since the study took place between September 2002 and April 2004. At that time, most patients paid for antiretroviral therapy. Today, most HIV patients are receiving drugs supplied for free by either PEPFAR—the U.S. President’s Emergency Plan for AI...

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