ScienceDaily: Biotechnology News |
- Insight into new drug resistance in hospital microbes
- Biologists discover an 'evening' protein complex that regulates plant growth
- Climate adaptation of rice
- Atomic structure discovered for a sodium channel that generates electrical signals in living cells
- New understandings of circadian rhythms
- Novel compound selectively kills cancer cells by blocking their response to oxidative stress
- Genetically modified Atlantic salmon mating study reveals danger of escape to wild gene pool
| Insight into new drug resistance in hospital microbes Posted: 13 Jul 2011 01:18 PM PDT Hospitals struggle to prevent the infections that complicate treatment for cancer, joint replacement, heart surgery and other conditions. Hospital-acquired infections are often resistant to multiple antibiotics, leading to approximately 100,000 deaths and more than $30 billion in additional health care costs yearly. New drugs are being developed to combat these infections, but resistance invariably emerges to these last-line drugs. Daptomycin, a new antibiotic approved by the FDA in 2003, is used to treat infections caused by multi-drug resistant bacteria, including staph and microbes known as enterococci.  |
| Biologists discover an 'evening' protein complex that regulates plant growth Posted: 13 Jul 2011 01:18 PM PDT Farmers and other astute observers of nature have long known that crops like corn and sorghum grow taller at night. But the biochemical mechanisms that control this nightly stem elongation, common to most plants, have been something of a mystery to biologists -- until now.  |
| Posted: 13 Jul 2011 11:20 AM PDT Rice -- which provides nearly half the daily calories for the world's population -- could become adapted to climate change and some catastrophic events by colonizing its seeds or plants with the spores of tiny naturally occurring fungi, new research shows.  |
| Atomic structure discovered for a sodium channel that generates electrical signals in living cells Posted: 13 Jul 2011 11:20 AM PDT Scientists have determined the atomic structure of a sodium channel, a pore in membranes of excitable cells, such as brain or heart cells, that emit electrical signals. They gate charged particles crossing the cell membrane to generate electrical currents. These encode information in the brain and make heart muscle contract. Many medications and neurotoxins act on sodium channels. Never before have researchers obtained a high resolution crystal structure of all atoms of this complex protein molecule and their three dimensional relationships.  |
| New understandings of circadian rhythms Posted: 13 Jul 2011 10:16 AM PDT A tiny plant called Arabidopsis thaliana just helped scientists unearth new clues about the daily cycles of many organisms, including humans.  |
| Novel compound selectively kills cancer cells by blocking their response to oxidative stress Posted: 13 Jul 2011 10:14 AM PDT Scientists have discovered a novel compound that selectively kills cancer cells by blocking their response to oxidative stress, with an effectiveness that surpassed a chemotherapy drug currently used to treat breast cancer. Their findings are based on experiments in cell culture and in mice.  |
| Genetically modified Atlantic salmon mating study reveals danger of escape to wild gene pool Posted: 13 Jul 2011 07:20 AM PDT If genetically modified Atlantic salmon were to escape from captivity they could succeed in breeding and passing their genes into the wild, researchers have found. Their research explores the potential reproductive implications of GM salmon as they are considered for commercial farming.  |
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