الاثنين، 1 سبتمبر 2014

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News

New way to diagnose malaria by detecting parasite's waste in infected blood cells

Posted: 31 Aug 2014 12:03 PM PDT

A technique that can detect malarial parasite's waste in infected blood cells has been developed by researchers. "There is real potential to make this into a field-deployable system, especially since you don't need any kind of labels or dye. It's based on a naturally occurring biomarker that does not require any biochemical processing of samples" says one of the senior authors of a paper.

Wine only protects against CVD in people who exercise

Posted: 31 Aug 2014 09:52 AM PDT

Wine only protects against cardiovascular disease (CVD) in people who exercise, according to results from the a study. Evidence suggesting that mild to moderate consumption of wine protects against cardiovascular disease has been accumulating since the early 1990s. In particular, retrospective studies have found that wine increases levels of HDL, the "good" cholesterol. But until now there has been no long-term, prospective, randomised study comparing the effects of red and white wine on HDL cholesterol and other markers of atherosclerosis.

Drinking tea reduces non-CV mortality by 24 percent

Posted: 31 Aug 2014 09:52 AM PDT

Drinking tea reduces non-cardiovascular mortality by 24 percent, reveals a study in 131,000 people. "Tea has antioxidants which may provide survival benefits. Tea drinkers also have healthier lifestyles so does tea drinking reflect a particular person profile or is it tea, per se, that improves outcomes -- for me that remains an open question. Pending the answer to that question, I think that you could fairly honestly recommend tea drinking rather than coffee drinking and even rather than not drinking anything at all," one researcher said.

Energy drinks cause heart problems, study suggests

Posted: 31 Aug 2014 09:52 AM PDT

Energy drinks can cause heart problems according to research. "So-called 'energy drinks' are popular in dance clubs and during physical exercise, with people sometimes consuming a number of drinks one after the other. This situation can lead to a number of adverse conditions including angina, cardiac arrhythmia (irregular heartbeat) and even sudden death," researchers report.

Batteryless cardiac pacemaker is based on automatic wristwatch

Posted: 31 Aug 2014 09:50 AM PDT

A new batteryless cardiac pacemaker based on an automatic wristwatch and powered by heart motion has been presented by researchers. The prototype device does not require battery replacement.

New horizon in heart failure: Investigational drug poised to change cardiology?

Posted: 30 Aug 2014 08:18 AM PDT

An investigational new heart failure drug could be poised to change the face of cardiology based on Hot Line results. The new agent, known as LCZ696, has already been granted Fast Track status by the FDA -- a designation which can expedite the review of new medicines intended to treat serious or life-threatening conditions. Fast Track designation also allows for rolling submission in the US. "To say that we are excited is an understatement. We are absolutely thrilled," said Dr. one investigator.

Evidence mounting that older adults who volunteer are happier, healthier

Posted: 29 Aug 2014 10:54 AM PDT

Older adults who stay active by volunteering are getting more out of it than just an altruistic feeling -- they are receiving a health boost too, researchers report. Volunteering is associated with reductions in symptoms of depression, better overall health, fewer functional limitations, and greater longevity.

Intense Exercise during Long Space Flights Helps Astronauts Protect Aerobic Capacity

Posted: 29 Aug 2014 08:56 AM PDT

Many astronauts experience a dip in aerobic capacity during long space flights, which can impair their ability to perform complex and demanding routine tasks. In a new article, NASA researchers find that regular, intense in-flight exercise helps preserve cardiovascular stamina.

Can YouTube save your life?

Posted: 29 Aug 2014 07:34 AM PDT

Only a handful of CPR and basic life support videos available on YouTube provide instructions which are consistent with recent health guidelines, according to a new study. Only 11.5% of the analyzed videos were found to be completely compatible with 2010 CPR guidelines with regard to sequence of interviews. "Although well-designed videos can create awareness and be useful as tools in training, they can never replace hands-on instruction from a properly qualified health practitioner," said one author.

'Face time' for the diagnoses of cardiac disease

Posted: 29 Aug 2014 07:34 AM PDT

To the careful observer, a person's face has long provided insight into what is going on beneath the surface. Now, with the assistance of a web camera and software algorithms, the face can also reveal whether or not an individual is experiencing atrial fibrillation, a treatable but potentially dangerous heart condition.

Socioeconomic status, gender are associated with differences in cholesterol levels

Posted: 29 Aug 2014 05:42 AM PDT

A long-term lifestyle study reports differences between the sexes when it comes to fat profiles associated with socioeconomic status. Research now breaks down factors associated with social class and finds surprising inequalities between men and women.

Meaningful relationships can help you thrive

Posted: 29 Aug 2014 05:42 AM PDT

Deep and meaningful relationships play a vital role in overall well-being. A new paper provides an important perspective on thriving through relationships, emphasizes two types of support that relationships provide, and illuminates aspects where further study is necessary.

Some women still don’t underststand 'overdiagnosis' risk in breast screening

Posted: 29 Aug 2014 05:39 AM PDT

A third of women who are given information about the chance of 'overdiagnosis' through the breast screening programs may not fully understand the risks involved, according to research. Overdiagnosis happens because some breast cancers grow so slowly that it would take more than a lifetime for them to threaten a woman's health. For every life that is saved through screening, researchers estimate that around three women will be overdiagnosed with breast cancer.

Managing coasts under threat from climate change, sea-level rise

Posted: 29 Aug 2014 05:39 AM PDT

Coastal regions under threat from climate change and sea-level rise need to tackle the more immediate threats of human-led and other non-climatic changes, according to a team of international scientists. The team of 27 scientists from five continents reviewed 24 years of Intergovernmental Panel on Climate Change (IPCC) assessments. They focused on climate change and sea-level rise impacts in the coastal zone, and examined ways of how to better manage and cope with climate change.

Obese or overweight teens more likely to become smokers

Posted: 28 Aug 2014 03:47 PM PDT

Weight status has no correlation with alcohol or marijuana use but is linked to regular cigarette smoking, a study examining whether overweight or obese teens are at higher risk for substance abuse has found. The authors note that the idea that smoking helps with weight reduction or appetite suppression is widely held, but is not true. "People who smoke crave fatty foods more," they say.

Possible bacterial drivers of IBD identified

Posted: 28 Aug 2014 02:00 PM PDT

A handful of bacterial culprits have been identified that may drive inflammatory bowel diseases such as Crohn's disease and ulcerative colitis, using patients' own intestinal immune responses as a guide.

Drug shows promise against Sudan strain of Ebola in mice

Posted: 28 Aug 2014 11:26 AM PDT

A potential antibody therapy for Sudan ebolavirus (SUDV), one of the two most lethal strains of Ebola, has been developed by researchers. A different strain, the Zaire ebolavirus (EBOV), is now devastating West Africa. First identified in 1976, SUDV has caused numerous Ebola outbreaks (most recently in 2012) that have killed more than 400 people in total.

How premalignant cells can sense oncogenesis, halt growth

Posted: 28 Aug 2014 10:55 AM PDT

What happens inside cells when they detect the activation of a cancer-inducing gene? Sometimes, cells are able to signal internally to stop the cell cycle. Such cells are able to enter, at least for a time, a protective non-growth state. New experiments now show how cells can respond to an activated RAS gene by entering a quiescent state called senescence.

Circulating tumor cell clusters more likely to cause metastasis than single cells

Posted: 28 Aug 2014 10:55 AM PDT

Circulating tumor cell (CTC) clusters -- clumps of from two to 50 tumor cells that break off a primary tumor and are carried through the bloodstream -- appear to be much more likely to cause metastasis than are single CTCs, according to a study.

Healthy Moms program helps women who are obese limit weight gain during pregnancy

Posted: 28 Aug 2014 10:55 AM PDT

Women who are obese can limit their weight gain during pregnancy using conventional weight loss techniques including attending weekly group support meetings, seeking advice about nutrition and diet, and keeping food and exercise journals, a study shows.

Good nutrition can help prevent, control type 2 diabetes

Posted: 28 Aug 2014 10:53 AM PDT

Investigators have identified specific foods and dietary patterns that are beneficial in preventing and controlling diabetes, through a comprehensive review of recent randomized clinical trials and observational studies of diabetes and nutrition.

New analysis of old HIV vaccines finds potentially protective immune response

Posted: 28 Aug 2014 10:52 AM PDT

Applying the benefit of hindsight, researchers have reanalyzed the findings of two historic pediatric HIV vaccine trials with encouraging results. The vaccines had in fact triggered an antibody response -- now known to be associated with protection in adults -- that was previously unrecognized in the infants studied in the 1990s.

Is the HPV vaccine necessary?

Posted: 28 Aug 2014 10:52 AM PDT

As the school year starts in full swing, many parents wonder if their child should receive the HPV vaccine, which is recommend for girls ages 11-26 and boys 11-21. There are a lot of questions and controversy around this vaccine, but many pediatricians say it comes down to protecting people from a leading cause of death.

Research reveals mechanism behind cell protein remodeling

Posted: 28 Aug 2014 10:52 AM PDT

The remodeling of a kitchen or bathroom changes the appearance of the room and improves its functionality. As investigators have demonstrated, a similar concept comes into play in remodeling proteins found within a family of cancers that does not respond well to cancer-treating drugs -- cancers driven by what is known as activated Ras.

New tool aids stem cell engineering for medical research

Posted: 28 Aug 2014 10:52 AM PDT

An online analytic tool that will speed up and enhance the process of re-engineering cells for biomedical investigation has been developed by researchers. CellNet is a free-use Internet platform that uses network biology methods to aid stem cell engineering.
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