الجمعة، 16 نوفمبر 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Preterm birth may be prevented with a few proven treatments, experts say

Posted: 15 Nov 2012 06:06 PM PST

Experts have set a target of lowering preterm birth rates by an average of 5 percent across 39 high-resource countries, including the United States, by 2015 to prevent prematurity for 58,000 babies a year.

Class of RNA molecules protects germ cells from damage

Posted: 15 Nov 2012 02:22 PM PST

Passing one's genes on to the next generation is a mark of evolutionary success. So it makes sense that the body would work to ensure that the genes the next generation inherits are exact replicas of the originals. Biologists have now identified one way the body does exactly that.

Innovative sobriety project reduces DUI and domestic violence arrests, study finds

Posted: 15 Nov 2012 02:20 PM PST

An innovative alcohol monitoring program that requires daily testing of alcohol-involved offenders helps reduce both repeat DUI arrests and domestic violence arrests, according to a new study.

Letter from doctor boosts cholesterol medication use

Posted: 15 Nov 2012 02:20 PM PST

Patients at high risk for cardiovascular disease are more likely to receive a prescription for cholesterol-lowering medication, and to achieve lower long-term cholesterol levels, when doctors use electronic health records to deliver personalized risk assessments via mail.

Probiotic worm treatment may improve symptoms of colitis by restoring gut bacteria to healthy state

Posted: 15 Nov 2012 02:20 PM PST

A new study on monkeys with chronic diarrhea that were treated by microscopic parasite worm (helminth) eggs has provided insights on how this form of therapy may heal the intestine. This condition in monkeys is similar to the inflammatory bowel diseases that affects up to 1.4 million Americans.

Vitamin D deficiency linked to type 1 diabetes

Posted: 15 Nov 2012 02:13 PM PST

A study has found a correlation between vitamin D3 serum levels and subsequent incidence of Type 1 diabetes. The six-year study of blood levels of nearly 2,000 individuals suggests a preventive role for vitamin D3 in this disease.

Low levels of donor-specific antibodies increase risks for transplant recipients

Posted: 15 Nov 2012 02:13 PM PST

Kidney transplant recipients who have even very low levels of preformed antibodies directed against a donated kidney have a significantly increased risk of organ rejection and kidney failure, according to a new study.

New injectable gels toughen up after entering the body

Posted: 15 Nov 2012 01:28 PM PST

Chemical engineers have now designed an injectable gel that responds to the body's high temperature by forming a reinforcing network that makes the gel much more durable, allowing it to function over a longer period of time.

Survival rates improve for in-hospital cardiac arrest

Posted: 15 Nov 2012 01:21 PM PST

A new study finds that patients who have a cardiac arrest in the hospital today are more likely to survive and to avoid neurological disability than they were 10 years ago.

Arginine and proline enriched diet may speed wound healing in diabetes

Posted: 15 Nov 2012 01:21 PM PST

A diet enriched with arginine and proline could speed diabetes-related wound healing, a new study suggests.

Researchers outline effective strategies to prevent teen depression and suicide

Posted: 15 Nov 2012 01:21 PM PST

Untreated depression is one of the leading causes of teen suicide, and signs of depression can also be a warning that a teen is contemplating suicide. In a new article, researchers are describing how positive connections can help offset these tragedies.

Neurons made from stem cells drive brain activity after transplantation in laboratory model

Posted: 15 Nov 2012 12:26 PM PST

Scientists are able to make neurons and other brain cells from stem cells, but getting these neurons to properly function when transplanted to a host has proven more difficult. Now, researchers have found a way to stimulate stem cell-derived neurons to direct cognitive function after transplantation to an existing neural network.

Quick test speeds search for Alzheimer's drugs: Compound restores motor function and longevity to fruit flies

Posted: 15 Nov 2012 12:26 PM PST

Researchers report that an efficient, high-volume technique for testing potential drug treatments for Alzheimer's disease uncovered an organic compound that restored motor function and longevity to fruit flies with the disease.

Parkinson's disease protein causes disease spread and neuron death in healthy animals

Posted: 15 Nov 2012 12:25 PM PST

Understanding how any disease progresses is one of the first and most important steps towards finding treatments to stop it. This has been the case for such brain-degenerating conditions as Alzheimer's disease. Now, after several years of incremental study, researchers have been able to piece together important steps in how Parkinson's disease (PD) spreads from cell to cell and leads to nerve cell death.

Using skills gleaned from video games, high school and college students outmatch medical residents in surgical simulations

Posted: 15 Nov 2012 11:16 AM PST

What can high school and college-age video game enthusiasts teach young surgeons-in-training? According to a new study the superior hand-eye coordination and hand skills gained from hours of repetitive joystick maneuvers mimic the abilities needed to perform today's most technologically advanced robotic surgeries.

Cellphone bans associated with fewer urban accidents

Posted: 15 Nov 2012 11:16 AM PST

Cellphones and driving go together like knives and juggling. But when cellphone use is banned, are drivers any safer? It depends on where you're driving, a new study says. The study found that, long-term, enacting a cellphone ban was associated with a relative decrease in the accident rate in urban areas. However, in very rural areas, cellphone bans were associated with higher accident rates than would otherwise be expected.

Potential new treatment to stop Alzheimer's disease: Molecular 'tweezers' break up toxic aggregations of proteins in mouse model

Posted: 15 Nov 2012 11:16 AM PST

Using a specific biological compound they call molecular "tweezers," researchers report that, for the first time in a living mouse model for Alzheimer's (AD), the compound cleared the existing amyloid ² and Tau aggregates, and proved protective to the neuron's synapses, another target common to AD.

Simplifying heart surgery with stretchable electronics devices

Posted: 15 Nov 2012 11:16 AM PST

A catheter made from stretchable electronics can serve triple-duty during heart surgery, researchers have found. The findings could make cardiac ablation surgeries simpler and safer.

Bone metastases treatment can improve overall survival

Posted: 15 Nov 2012 11:16 AM PST

One of the most frequent sites of metastases is the bone, with an estimated 30 to 40 percent of patients with non-small-cell lung cancer developing bone loss. A study shows that the bone metastases drug denosumab was associated with improved overall survival compared with zoledonic acid.

Large-scale genomic testing feasible, impacts therapy

Posted: 15 Nov 2012 11:16 AM PST

Targeted cancer therapy has been transforming the care of patients with non-small-cell lung cancer (NSCLC). It is now standard practice for tumor specimens from NSCLC patients to be examined for EGFR mutations and ALK rearrangements to identify patients for therapy with EGFR and ALK inhibitors, respectively. Now, researchers say large-scale genomic testing is feasible within the clinical workflow, impacting therapeutic decisions.

Bioprinting has promising future: Scientists building structures for cells to grow on, in order to regenerate tissue

Posted: 15 Nov 2012 11:15 AM PST

The pioneering concept of bioprinting is delivering promising results according to one of the early champions of the process.

Wax-filled nanotech yarn behaves like powerful, super-strong muscle

Posted: 15 Nov 2012 11:15 AM PST

New artificial muscles made from nanotech yarns and infused with paraffin wax can lift more than 100,000 times their own weight and generate 85 times more mechanical power during contraction than the same size natural muscle, according to scientists. The artificial muscles are yarns constructed from carbon nanotubes.

How bacteria inactivate immune defenses

Posted: 15 Nov 2012 11:15 AM PST

Scientists have identified a way in which Salmonella bacteria, which cause gastroenteritis and typhoid fever, counteract the defense mechanisms of human cells.

Chronic fatigue syndrome: System under stress

Posted: 15 Nov 2012 10:38 AM PST

Evidence links autonomic functioning to cognitive impairment in chronic fatigue syndrome.

Umbilical cord cells outperform bone marrow cells in repairing damaged hearts

Posted: 15 Nov 2012 10:37 AM PST

A new study has shown that cells derived from the umbilical cord are more effective in restoring heart function after an acute myocardial infarction (in common parlance, a heart attack) in a pre-clinical model than a similar cell population derived from bone marrow.

Protein-making machinery can switch gears with a small structural change process; Implications for immunity and cancer therapy

Posted: 15 Nov 2012 10:34 AM PST

For the past several years, research has focused on the intricate actions of an ancient family of catalytic enzymes that play a key role in translation, the process of producing proteins. In a new study, scientists have shown that this enzyme can actually also work in another fundamental process in humans.

When the going gets tough, the tough get…more relief from a placebo?

Posted: 15 Nov 2012 10:26 AM PST

Are you good at coping when life gets tough? A straight-shooter? Will you help others without expecting anything in return? Those personality traits might do more than help you win a popularity contest. New neuroscience research suggests those qualities also might make you more likely to get pain relief from a placebo.

Electrical engineer turns brain implant research into products

Posted: 15 Nov 2012 10:23 AM PST

An electrical engineering professor is developing products from technologies that assist in finding new approaches for treating nervous system disorders such as blindness, deafness, Parkinson's and epilepsy, while another set of clients is using them to control prosthetic limbs.

Molecular mechanisms underlying stem cell reprogramming decoded

Posted: 15 Nov 2012 10:23 AM PST

Thanks to some careful detective work, scientist better understand just how iPS cells form – and why the Yamanaka process is inefficient, an important step to work out for regenerative medicine. The findings uncover cellular impediments to iPS cell development that, if overcome, could dramatically improve the efficiency and speed of iPS cell generation.

Hypothermia: Coming out of the cold

Posted: 14 Nov 2012 04:26 PM PST

New research provides clarity on the management and treatment of accidental hypothermia victims. The article reviews current knowledge of accidental hypothermia, along with a medical algorithm to help emergency medics make rapid on-site decisions.

Military should reassess reproductive health care for women, researcher argues

Posted: 14 Nov 2012 02:29 PM PST

Noting that active-duty servicewomen have higher rates of unintended pregnancy than the general population and lower reported contraception use, one researcher is suggesting the answer might be a review of the health care offered to females in the military and veterans.

The hidden consequences of helping rural communities in Africa

Posted: 14 Nov 2012 02:28 PM PST

Improving water supplies in rural African villages may have negative knock-on effects and contribute to increased poverty, new research has found. Rural development initiatives across the developing world are designed to improve community wellbeing and livelihoods, but a study of Ethiopian villages has shown that this can lead to unforeseen consequences caused by an increase in the birth rate in the absence of family planning.

Enhancing breast cancer detection: Computer algorithm analyzes thermal images of breasts

Posted: 14 Nov 2012 08:35 AM PST

Straightforward imaging with an infrared, thermal, camera for detecting breast cancer early without the discomfort or inconvenience of mammography or biomolecular tests, according to a new study.

Antibody-coated stents: Indication of disadvantages

Posted: 14 Nov 2012 08:34 AM PST

If coronary vessels have to be widened or opened, a vascular support (stent) is usually inserted. If this stent is coated with antibodies instead of drugs, the risk of subsequent myocardial infarction or re-operation increases in certain patients, according to a new report.

High sperm DNA damage a leading cause of 'unexplained infertility', research finds

Posted: 14 Nov 2012 08:32 AM PST

New research has uncovered the cause of infertility for 80 per cent of couples previously diagnosed with 'unexplained infertility': high sperm DNA damage.

Computer science helping the aged stay home

Posted: 14 Nov 2012 08:30 AM PST

Computer scientists in Australia are leading a project to develop novel sensor systems to help older people keep living independently and safely in their own homes.

Kicking the habit: New research examines the barriers to quitting smoking for smokers with asthma

Posted: 14 Nov 2012 08:29 AM PST

A new study examines how anxiety sensitivity can thwart the efforts of smokers with asthma to quit smoking.

Researchers investigate dasatinib in combination with other drugs for advanced, recurrent ovarian cancer

Posted: 14 Nov 2012 08:29 AM PST

Researchers have conducted a phase I trial of dasatinib, an oral SRC-family tyrosine kinase inhibitor, to determine the maximum tolerated dose when combined with paclitaxel and carboplatin to treat patients with advanced or recurrent ovarian cancer.

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