السبت، 15 مارس 2014

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Salad at high school concession stands!?

Posted: 14 Mar 2014 06:22 PM PDT

Is there something that can be done to improve the healthfulness of high school concession stand food, and preserve the profits they generate? According to this new study the answer is yes! This study shows that if you give people healthy foods they will buy them and be more satisfied, one of the authors said.

Years of High School Football not linked to Neurocognitive Decline, study suggests

Posted: 14 Mar 2014 06:20 PM PDT

As more parents consider whether it's safe for adolescents to play football, a new study of high school players found no link between years of play and any decline in neurocognitive function. The study suggests that the risks of sport-related brain injuries are relatively low.

Genes may thwart seniors' exercise gains

Posted: 14 Mar 2014 08:15 AM PDT

The ACE I/D gene and how its variations -- the ID, DD, and II genotypes -- cause some seniors' to lose out on the benefits of exercise, new research shows. These findings suggest that the ACE I/D genotype may be a significant factor in how well seniors respond to exercise. This insight could be used to develop more effective, individualized, and senior-friendly exercise recommendations for improving physical function and preventing in disability.

Blood poisoning increases the risk of blood clots, new research shows

Posted: 14 Mar 2014 08:15 AM PDT

The world's largest study of the correlation between blood poisoning and the risk of blood clots is underway. In recent years there has been a growing level of interest for the correlation between the risk of blood clots and infections such as blood poisoning. The researchers hope that the new knowledge can be utilized to ensure better prevention and earlier treatment.

Link between diabetes, pancreatic cancer found

Posted: 14 Mar 2014 08:15 AM PDT

There is an association between pancreatic cancer and diabetes, new research indicates. While the numbers of pancreatic cancer in the population are relatively low, the study suggests a screening program should be considered. "The priority on screening should be on patients with new-onset diabetes but can later be expanded to long-standing diabetic patients," concluded the lead author.

Bone lengthening technique proves useful in patients with cleft palate

Posted: 14 Mar 2014 08:13 AM PDT

A technique called distraction osteogenesis can create increased length of the upper jaw in patients with cleft lip and palate deformities, report researchers. In this technique, hardware is placed to gradually "stretch" bone in the desired direction. The researchers studied the bone-lengthening approach because the maxilla often regresses toward its original position after standard surgical advancement techniques.

New approach to chronic lymphocytic leukemia treatment

Posted: 14 Mar 2014 08:13 AM PDT

A novel and unique approach to treating Chronic Lymphocytic Leukemia (CLL), a form of blood cancer that often requires repeated chemotherapy treatments to which it grows resistant, as been developed by scientists. Unlike other novel therapies that have shown promise in the treatment of CLL, this approach is unique because it does not directly target proteins within the B-cell receptor pathway, but instead uses novel model systems that reverse the pro-survival effects of the microenvironment.

New cell line should accelerate embryonic stem cell research

Posted: 14 Mar 2014 06:51 AM PDT

A new line of human embryonic stem cells that have the ability to develop into a far broader range of tissues than most existing cell lines has been created by researchers. The cells, called naïve embryonic stem cells, normally appear at the earliest stages of embryonic development. They retain the ability to turn into any of all the different types of cells of the human body -- a capacity called "pluripotency."

Older adults: Build muscle and you'll live longer

Posted: 14 Mar 2014 06:51 AM PDT

The more muscle mass older Americans have, the less likely they are to die prematurely, new research shows. The findings add to the growing evidence that overall body composition -- and not the widely used body mass index, or BMI -- is a better predictor of all-cause mortality. "In other words, the greater your muscle mass, the lower your risk of death," said the study's co-author. "Thus, rather than worrying about weight or body mass index, we should be trying to maximize and maintain muscle mass."

Drivers with hemianopia fail to detect pedestrians, study shows

Posted: 14 Mar 2014 06:50 AM PDT

A diagnosis of hemianopia, or blindness in one-half of the visual field in both eyes as the result of strokes, tumors or trauma often means the end of driving. Researchers set out to determine the extent to which people with hemianopia can compensate for the lost vision when driving, with a long term goal of developing and evaluating devices and training that will assist them to drive more safely. The findings suggest that the scanning patterns employed by some drivers with hemianopia may be insufficient for safe driving.

Critical role of one gene to our brain development

Posted: 14 Mar 2014 06:50 AM PDT

A gene linked to intellectual disability is critical to the earliest stages of the development of human brains, new research has confirmed. An international research team explains in a new paper how mutations in USP9X are associated with intellectual disability. These mutations, which can be inherited from one generation to the next, have been shown to cause disruptions to normal brain cell functioning.

Blood test identifies brain damage from concussion in ice hockey

Posted: 14 Mar 2014 06:36 AM PDT

Half way into last year's season, 35 of 288 players in the Swedish Hockey League had already had a concussion. Researchers who surveyed all of the players in the league's 12 clubs, have now developed a method that can show just an hour after the injury how severe the concussion is, if there is a risk of long-term symptoms and about when the player can return to the game.

Patients with schizophrenia have impaired ability to imitate, brain mapping confirms

Posted: 14 Mar 2014 06:35 AM PDT

A brain-mapping study of patients with schizophrenia has found that areas associated with the ability to imitate are impaired, providing new support for the theory that deficits in this basic cognitive skill may underlie the profound difficulty with social interactions that characterize the disorder. According to psychologists, imitation is something that we all do whenever we learn a new skill, whether it is dancing or how to behave in specific social situations.

Mindfulness-based meditation helps teenagers with cancer

Posted: 13 Mar 2014 06:26 PM PDT

Mindfulness-based meditation could lessen some symptoms associated with cancer in teens, according to the results of a clinical trial intervention. Mindfulness-based meditation focuses on the present moment and the connection between the mind and body. Adolescents living with cancer face not only the physical symptoms of their condition, but also the anxiety and uncertainty related to the progression of the disease, the anticipation of physical and emotional pain related to illness and treatment, the significant changes implied in living with cancer, as well as the fear of recurrence after remission

Emotion detectors could make driving safer

Posted: 13 Mar 2014 02:30 PM PDT

Technology now allows us to read facial expressions and identify which of the seven universal emotions a person is feeling: fear, anger, joy, sadness, disgust, surprise, or suspicion. This is very useful in video game development, medicine, marketing, and, perhaps less obviously, in driver safety. We know that in addition to fatigue, the emotional state of the driver is a risk factor.

New stroke research combines brain stimulation, gait training

Posted: 13 Mar 2014 02:29 PM PDT

A researcher will test whether brain stimulation combined with gait training can improve patients' ability to walk after a stroke. People 50 or older who have had a stroke will be enrolled in the study and receive gait-training on a treadmill. The treatment group will receive transcranial direct current stimulation prior to gait training. Electrical stimulation will be administered in combination with motor training of the ankle, as a major problem for people trying to walk after stroke is an inability to flex the ankle on their affected side.

Body's fatty folds may help fight kidney failure

Posted: 13 Mar 2014 02:29 PM PDT

In a new study, it was observed that in rats with kidney disease, functioning of the kidney improved when the organ was fused with the omentum, a fatty fold of tissue that lies close to the kidney and is a rich source of stem cells. The findings suggest that stem cells from a chronic kidney disease patient's own omentum may help heal diseased kidneys without the need for an outside source of cells.

Stroke survivors may lose month of healthy life for 15-minute delay in treatment

Posted: 13 Mar 2014 01:45 PM PDT

Every 15-minute delay in delivering a clot-busting drug after stroke robs survivors of an average month of healthy life. Streamlining the time from symptom onset to clot-busting treatment by just one minute means one less day of disability for a survivor. While all stroke patients benefit from faster treatment, younger patients seem to gain more benefit than older patients.

Vitamin D hypothesis challenged: Some racial disparities in childbirth more environmental than genetic

Posted: 13 Mar 2014 12:42 PM PDT

A new study investigating racial disparities in birth outcomes shows that contrary to some theories, vitamin D is unlikely to play a role in differences in preterm birth and low birth weight between African-Americans and whites. "For years there has been this hypothesis that African-Americans have worse birth outcomes because they have more melanin in their skin which reflects the sun and therefore lowers levels of Vitamin D," said the study's author. "But in examining the relationship between ultraviolet exposure and birth outcomes nationwide, there was no evidence to support this."

Reversible mechanism that increases muscle elasticity discovered

Posted: 13 Mar 2014 09:31 AM PDT

A new form of mechanical memory that adjusts the elasticity of muscles to their history of stretching has been discovered. Using highly sensitive atomic force microscopes, the researchers detected a chemical reaction that increases the elasticity of muscle proteins. Crucially, this reaction targets molecules that have been exposed to a stretching force. This finding changes our understanding of how muscles respond to stretching and may lead to new treatments of muscle disorders.

Immune cells need each other to combat deadly lung-invading fungus

Posted: 13 Mar 2014 09:25 AM PDT

Although long recognized as an essential defense against the lung-invading fungus Asperfillus fumigatus, Neutrophils actually require a little help from fellow immune cells, according to a study. The work suggests that although neutrophils alone may contain the fungus initially (these cells are the first on the scene), they need help from inflammatory monocytes for sustained control of infection.

Purified fish oils could help treat rare disease affecting newborn babies

Posted: 13 Mar 2014 06:27 AM PDT

A rare and potentially lethal disease of newborn babies whose bodies make too much insulin may be treatable with fish oils, according to researchers. The disease, called congenital hyperinsulinism, means that the infant's brain is starved of blood sugar which can lead to brain damage or long-term disability. But by giving the children purified fish oils similar to those used to treat some heart attack patients, alongside standard medical treatment, their blood sugar levels improve, the researchers have reported.

Performing cardio, resistance training during same session: Does order matter? Research says no

Posted: 13 Mar 2014 06:22 AM PDT

Although the remarkable benefits of combined training have been clarified by numerous investigations, fitness enthusiasts struggle with the same question: Does the order of cardio and resistance training influence the effectiveness of a training program? Based on their findings, the researchers concluded that the training order of combined cardio- and resistance training does not seem to have an effect on biological adaptations, leaving the exercise order up to personal preference.

Heart scans only useful in prescribing statins under certain conditions

Posted: 13 Mar 2014 06:20 AM PDT

As long as inexpensive statins, which lower cholesterol, are readily available and patients don't mind taking them, it doesn't make sense to do a heart scan to measure how much plaque has built up in a patient's coronary arteries before prescribing the pills, according to a new study. The result is somewhat surprising, given all the evidence that has accumulated over the last decade that the test strongly predicts heart attacks, said the lead author.

Bladder cancer patient with rare genetic mutations shows exceptional response to everolimus

Posted: 13 Mar 2014 06:20 AM PDT

A patient with advanced bladder cancer experienced a complete response for 14 months to the drug combination everolimus and pazopanib in a phase I trial, and genomic profiling of his tumor revealed two alterations that may have caused this exceptional response, according to a study. Exceptional responders are cancer patients who had a complete response or partial response for at least six months to treatment in a clinical trial in which less than 10 percent of patients responded, according to the National Cancer Institute.

Same-day double knee replacement safe for select rheumatoid arthritis patients

Posted: 13 Mar 2014 06:20 AM PDT

Total knee replacement for patients with rheumatoid arthritis (RA) presents greater challenges, as RA patients generally have more health concerns than patients with osteoarthritis. However, researchers have found that same-day bilateral knee replacement surgery is safe for select patients with rheumatoid arthritis.

Stem cells inside sutures could improve healing in Achilles tendon injuries

Posted: 12 Mar 2014 03:20 PM PDT

Sutures embedded with stem cells led to quicker and stronger healing of Achilles tendon tears than traditional sutures, according to a new study. Achilles tendon injuries are common for professional, collegiate and recreational athletes. These injuries are often treated surgically to reattach or repair the tendon if it has been torn. Patients have to keep their legs immobilized for a while after surgery before beginning their rehabilitation.

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