السبت، 15 يونيو 2013

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Medical researchers design variant of main painkiller receptor

Posted: 14 Jun 2013 08:04 PM PDT

Scientists have developed a variant of the mu opioid receptor that has several advantages when it comes to experimentation. This variant can be grown in large quantities in bacteria and is also water-soluble, enabling experiments and applications that had previously been very challenging or impossible.

Stress test and brain scans pinpoint two distinct forms of Gulf War illness

Posted: 14 Jun 2013 08:04 PM PDT

New research suggests that Gulf War illness may have two distinct forms depending on which brain regions have atrophied. In a study of Gulf War veterans, researchers say their findings help explain why clinicians have consistently encountered veterans with different symptoms and complaints.

Medications to prevent clots not reaching some patients

Posted: 14 Jun 2013 08:03 PM PDT

Researchers report that hospitalized patients do not receive more than one in 10 doses of doctor-ordered blood thinners prescribed to prevent potentially lethal or disabling blood clots, a decision they say may be fueled by misguided concern by patients and their caregivers.

Sugar overload can damage heart

Posted: 14 Jun 2013 01:51 PM PDT

Too much sugar can set people down a pathway to heart failure, according to a new study.

Why are there so many youth baseball-throwing injuries?

Posted: 14 Jun 2013 01:51 PM PDT

Surgeons and sports medicine specialists may have some answers as to why youth baseball pitching injuries continue to rise despite the implementation of nationally recommended pitching limits.

Memory-boosting chemical identified in mice: Cell biologists find molecule targets a key biological pathway

Posted: 14 Jun 2013 01:48 PM PDT

Memory improved in mice injected with a small, drug-like molecule discovered by researchers studying how cells respond to biological stress.

Unauthorized immigrants account for only 1. 4 percent of U. S. medical spending

Posted: 14 Jun 2013 01:48 PM PDT

A new study finds that immigrants have lower health care expenditures than legal residents.

New findings regarding DNA damage checkpoint mechanism in oxidative stress

Posted: 14 Jun 2013 09:56 AM PDT

Researchers have uncovered a previously unknown surveillance mechanism, known as a DNA damage checkpoint, used by cells to monitor oxidatively damaged DNA. DNA repair takes place approximately 10,000 times per cell, per day, through processes that are still only partially understood because of their complexity, speed, and the difficulty of studying complex interactions within living cells.

Scientists explode the myth about running injuries

Posted: 14 Jun 2013 07:08 AM PDT

Ordinary running shoes function perfectly well for new runners regardless of how they pronate, according to new research. Healthy newcomers to running who overpronate/underpronate do not actually suffer more running injuries than other runners if their first pair of running shoes do not have any special support.

Incontinence takes mental toll on younger women

Posted: 14 Jun 2013 07:07 AM PDT

Middle-aged women are more likely to suffer depression from a common medical problem that they find too embarrassing to talk about: urinary incontinence.

Testing method promising for spinal cord injuries, multiple sclerosis

Posted: 14 Jun 2013 05:28 AM PDT

A medical test previously developed to measure a toxin found in tobacco smokers has been adapted to measure the same toxin in people suffering from spinal cord injuries and multiple sclerosis, offering a potential tool to reduce symptoms.

Metabolic molecule drives growth of aggressive brain cancer

Posted: 14 Jun 2013 05:28 AM PDT

A new study has identified an abnormal metabolic pathway that drives cancer-cell growth in a particular subtype of glioblastoma, the most common and lethal form of brain cancer. The finding could lead to new therapies for a subset of patients with glioblastoma.

Depression in postmenopausal women may increase diabetes and cardiovascular disease risk

Posted: 14 Jun 2013 05:28 AM PDT

Postmenopausal women who use antidepressant medication or suffer from depression might be more likely to have a higher body mass index, larger waist circumference and inflammation -- all associated with increased risk for diabetes and cardiovascular disease, according to a new study.

Severe maternal complications less common during home births, study suggests

Posted: 14 Jun 2013 05:28 AM PDT

Women with low risk pregnancies who choose to give birth at home have a lower risk of severe complications than women who plan a hospital birth, finds a new study.

Experts propose restoring invisible and abandoned trials 'to correct the scientific record'

Posted: 14 Jun 2013 05:28 AM PDT

Experts are today calling for all unpublished and misreported trials to be published or formally corrected within the next year to ensure doctors and patients rely on complete and accurate information to make decisions about treatments.

Menopause may be an unintended outcome of men's preference for younger mates

Posted: 14 Jun 2013 05:26 AM PDT

After decades of laboring under other theories that never seemed to add up, biologists have concluded that menopause is actually an unintended outcome of natural selection generated by men's historical preference for younger mates.

Geneticists solve mystery of EEC Syndrome's variable severity in children

Posted: 14 Jun 2013 05:26 AM PDT

By identifying a protein that acts as a genetic modifier, scientists have solved the mystery of why some infants are born with a grave syndrome consisting of cleft palate and major deformities of the skin and limbs, while other infants with the same predisposing genetic mutation bear little or no sign of the illness, called EEC.

Using math to kill cancer cells

Posted: 14 Jun 2013 05:26 AM PDT

Scientists have outlined how advanced mathematical modelling can be used in the fight against cancer. The technique predicts how different treatments and genetic modifications might allow cancer-killing, oncolytic viruses to overcome the natural defences that cancer cells use to stave off viral infection.

High prevalence of NSAID prescription in those at risk of heart attack/death in primary care

Posted: 14 Jun 2013 05:26 AM PDT

A new study demonstrates a high prevalence of NSAID prescriptions in patients at risk of ischaemic heart disease.

Overweight and obese patients less likely to achieve remission in early rheumatoid arthritis

Posted: 14 Jun 2013 05:26 AM PDT

Overweight and obese patients are less likely to achieve successful remission in early rheumatoid arthritis compared to those of normal weight.

A turbocharger for nerve cells: Key mechanism boosts the signaling function of neurons in brain

Posted: 14 Jun 2013 05:25 AM PDT

Locating a car that's blowing its horn in heavy traffic, channel-hopping between football and a thriller on TV without losing the plot, and not forgetting the start of a sentence by the time we have read to the end -- we consider all of these to be normal everyday functions. They enable us to react to fast-changing circumstances and to carry out even complex activities correctly. For this to work, the neuron circuits in our brain have to be very flexible. Scientists have now discovered an important molecular mechanism that turns neurons into true masters of adaptation.

Smoking in the entrances to bars increases the presence of nicotine inside

Posted: 14 Jun 2013 05:22 AM PDT

The protection provided by the smoking ban decreases when people can still smoke outside the venue. For the first time, a study has analyzed the effects of the modification to the Spanish tobacco control law, implemented in 2011 in hospitality venues in Spain. The findings show that smoking on terraces and in the entrances to bars and restaurants increases the concentration of nicotine and particulate matter, which affects clients and hospitality professionals alike.

Farmworkers feel the heat even when they leave the fields

Posted: 14 Jun 2013 05:17 AM PDT

Researchers conducted a study to evaluate the heat indexes in migrant farmworker housing and found that a majority of the workers don't get a break from the heat when they're off the clock.

Developmental protein plays role in spread of cancer

Posted: 14 Jun 2013 05:17 AM PDT

A protein used by embryo cells during early development, and recently found in many different types of cancer, apparently serves as a switch regulating the spread of cancer, known as metastasis, report researchers.

Could novel drug target autism and fetal alcohol disorder?

Posted: 13 Jun 2013 01:18 PM PDT

A surprising new study reveals a common molecular vulnerability in autism and fetal alcohol disorder. Both have social impairment symptoms and originate during brain development. The study found male offspring of rat mothers given alcohol during pregnancy have social impairment and altered levels of autism-related genes found in humans. But the damage was reversed with a thyroid hormone given to the mothers during pregnancy.

Chronic drinking and exposure to particulate matter dramatically decreases lung function

Posted: 13 Jun 2013 01:18 PM PDT

Alveolar macrophage (AM) function plays a critical role in protecting the lungs by removing particulates. Chronic drinking causes persistent oxidative stress in the lungs, leading to impaired AM function. A new rodent study shows that chronic drinking appears to intensify lung damage caused by particulate matter.

Finasteride, medication for male pattern hair loss, may also decrease drinking

Posted: 13 Jun 2013 01:18 PM PDT

Finasteride is a synthetic drug for the treatment of male pattern hair loss and an enlarged prostate. Rodent research has shown that finasteride can reduce alcohol intake. A preliminary study of men with finasteride-related sexual side effects indicates that finasteride may decrease drinking.

Tobacco laws for youth may reduce adult smoking

Posted: 13 Jun 2013 01:17 PM PDT

States that want to reduce rates of adult smoking may consider implementing stringent tobacco restrictions on teens. Scientists discovered that states with more restrictive limits on teens purchasing tobacco also have lower adult smoking rates, especially among women.

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