الخميس، 19 يناير 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Saving dogs with spinal cord injuries

Posted: 18 Jan 2012 12:53 PM PST

Dogs with spinal cord injuries may soon benefit from an experimental drug currently being tested by researchers — work that they hope will one day help people with similar injuries.

Novel gene mutations associated with bile duct cancer

Posted: 18 Jan 2012 11:36 AM PST

Investigators have identified a new genetic signature associated with bile duct cancer, a usually deadly tumor for which effective treatment currently is limited.

Study maps destructive path from cigarette to emphysema

Posted: 18 Jan 2012 11:36 AM PST

Scientists described the track the toxic smoke takes through the tissues and how they accomplish their destructive work.

Solving the mystery of an old diabetes drug that may reduce cancer risk

Posted: 18 Jan 2012 10:23 AM PST

Researchers now report on how the diabetes drug metformin potentially reduces cancer risk.

Important gene-regulation proteins pinpointed by new method

Posted: 18 Jan 2012 10:23 AM PST

A novel technique precisely pinpoints the location of proteins that read and regulate chromosomes. The order of these proteins determines whether a brain cell, a liver cell, or a cancer cell is formed. Until now, it has been exceedingly difficult to determine exactly where such proteins bind to the chromosome, and therefore how they work. The new technique has the potential to take high-resolution snapshots of proteins as they regulate or miss-regulate an entire genome.

Taking another look at the roots of social psychology

Posted: 18 Jan 2012 09:31 AM PST

Psychology textbooks have made the same historical mistake over and over. Now the inaccuracy is pointed out in a new article.

Breast cancer cells targeted, then burned, by gold-filled silicon wafers

Posted: 18 Jan 2012 09:28 AM PST

By shining infrared light on specially designed, gold-filled silicon wafers, scientists have successfully targeted and burned breast cancer cells. If the technology is shown to work in human clinical trials, it could provide patients a non-invasive alternative to surgical ablation, and could be used in conjunction with traditional cancer treatments, such as chemotherapy, to make those treatments more effective.

How drugs get those tongue-twisting generic names

Posted: 18 Jan 2012 08:20 AM PST

Oseltamivir. Esomeprazole. Trastuzumab. Where do drugs get those odd-sounding generic names? The answers are in a new article that explains the logic behind the tongue-twisters.

Hip fractures: Coexisting medical conditions increase treatment costs and lengthen hospitalization, study finds

Posted: 18 Jan 2012 08:20 AM PST

More than 250,000 hip fractures occur every year in the U.S., often resulting in hospitalization, surgery, nursing-home admission, long-term disability, and/or extended periods of rehabilitation. Independent existing medical conditions (otherwise known as comorbidities) significantly increase the treatment cost and length of hospitalization for older adults who have sustained a hip fracture, according to a new study.

First link between potentially toxic PFCs in office air and in office workers' blood

Posted: 18 Jan 2012 08:20 AM PST

In a first-of-its-kind study, scientists are reporting that the indoor air in offices is an important source of worker exposure to potentially toxic substances released by carpeting, furniture, paint and other items. Their report documents a link between levels of these so-called polyfluorinated compounds in office air and in the blood of workers.

Contact lenses provide extended pain relief to laser eye surgery patients

Posted: 18 Jan 2012 08:20 AM PST

Scientists are reporting development of contact lenses that could provide a continuous supply of anesthetic medication to the eyes of patients who undergo laser eye surgery -- an advance that could relieve patients of the burden of repeatedly placing drops of medicine into their eyes every few hours for several days.

Lack of sleep makes your brain hungry

Posted: 18 Jan 2012 08:17 AM PST

New research shows that a specific brain region that contributes to a person's appetite sensation is more activated in response to food images after one night of sleep loss than after one night of normal sleep. Poor sleep habits can therefore affect people's risk of becoming overweight in the long run.

Ulcer-causing bacteria baffled by mucus: Researchers discover impact of viscoelasticity on collective behavior of swimming microorganisms

Posted: 18 Jan 2012 08:17 AM PST

A new study demonstrates how introducing certain polymers—like those found in human mucus and saliva—into an aquatic environment makes it significantly more difficult for ulcer-causing bacteria and other microorganisms to coordinate.

Continuing uncertainties surround anti-influenza drug

Posted: 18 Jan 2012 08:10 AM PST

Incomplete availability of data has hampered a thorough assessment of the evidence for using the anti-influenza drug oseltamivir, a Cochrane Review has found. However, after piecing together information from over 16,000 pages of clinical trial data and documents used in the process of licensing oseltamivir (Tamiflu) by national authorities, a team of researchers has raised critical questions about how well the drug works and about its reported safety profile.

Effects of Tamiflu still uncertain, warn experts, as Roche continues to withhold key trial data, according to new report

Posted: 18 Jan 2012 07:15 AM PST

Two years after pharmaceutical giant Roche promised the British Medical Journal it would release key Tamiflu trial data for independent scrutiny, the safety and effectiveness of this anti-influenza drug remains uncertain, warn experts. A new report by the Cochrane Collaboration says Roche's refusal to provide full access to all its data leaves critical questions about how well the drug works unresolved.

Enhancing cognition in older adults also changes personality

Posted: 18 Jan 2012 07:15 AM PST

A program designed to boost cognition in older adults also increased their openness to new experiences, researchers report, demonstrating for the first time that a non-drug intervention in older adults can change a personality trait once thought to be fixed throughout the lifespan.

Scientists create novel RNA repair technology

Posted: 17 Jan 2012 04:15 PM PST

Scientists have identified a compound that can help repair a specific type of defect in RNA, a type of genetic material. The methods in the new study could accelerate the development of therapeutics to treat a variety of incurable diseases such as Huntington's disease, Spinocerebellar ataxia, and Kennedy disease.

Polar growth at the bacterial scale reveals potential new targets for antibiotic therapy

Posted: 17 Jan 2012 04:14 PM PST

Microbiologists have identified a new bacterial growth process -- one that occurs at a single end or pole of the cell instead of uniform, dispersed growth along the long axis of the cell -- that could have implications in the development of new antibacterial strategies.

Mechanism by which newly approved melanoma drug accelerates secondary skin cancers uncovered

Posted: 17 Jan 2012 04:14 PM PST

Patients with metastatic melanoma taking the recently approved drug vemurafenib (Zelboraf®) responded well to the twice daily pill, but some of them developed a different, secondary skin cancer. Now, researchers have elucidated the mechanism by which vemurafenib excels at fighting melanoma but also allows for the development of skin squamous cell carcinomas.

New gene discovery unlocks mystery to epilepsy in infants

Posted: 17 Jan 2012 11:54 AM PST

Researchers have come a step closer to unlocking a mystery that causes epileptic seizures in babies. Benign familial infantile epilepsy has been recognized for some time as infantile seizures, without fever, that run in families but the cause has so far eluded researchers. However, clinical researchers have now discovered a gene.

Anti-malaria drug synthesized with the help of oxygen and light

Posted: 17 Jan 2012 11:37 AM PST

In the future it should be possible to produce the best anti-malaria drug, artemisinin, more economically and in sufficient volumes for all patients.

Novel way to prevent drug-induced liver injury

Posted: 15 Jan 2012 11:00 AM PST

Investigators have developed a novel strategy to protect the liver from drug-induced injury and improve associated drug safety. The team reports that inhibiting a type of cell-to-cell communication can protect against damage caused by liver-toxic drugs such as acetaminophen.

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