ScienceDaily: Top News

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• New way to diagnose malaria by detecting parasite's waste in infected blood cells
• Why sibling stars look alike: Early, fast mixing in star-birth clouds
• Memory in silent neurons: How do unconnected neurons communicate?
• Changing global diets is vital to reducing climate change
• Antarctic sea-level rising faster than global rate
• Wine only protects against CVD in people who exercise
• Drinking tea reduces non-CV mortality by 24 percent
• Energy drinks cause heart problems, study suggests
• Batteryless cardiac pacemaker is based on automatic wristwatch
• New horizon in heart failure: Investigational drug poised to change cardiology?
• Evidence mounting that older adults who volunteer are happier, healthier
• Hydrogen powers important nitrogen-transforming bacteria
• Can YouTube save your life?
• Not all phytoplankton in the ocean need to take their vitamins
• 'Face time' for the diagnoses of cardiac disease
• Socioeconomic status, gender are associated with differences in cholesterol levels
• Meaningful relationships can help you thrive
• Some women still don’t underststand 'overdiagnosis' risk in breast screening
• Obese or overweight teens more likely to become smokers
• Possible bacterial drivers of IBD identified
• Drug shows promise against Sudan strain of Ebola in mice

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.

Why sibling stars look alike: Early, fast mixing in star-birth clouds Posted: 31 Aug 2014 12:03 PM PDT Early, fast, turbulent mixing of gas within giant molecular clouds -- the birthplaces of stars -- means all stars formed from a single cloud bear the same unique chemical 'tag' or 'DNA fingerprint,' write astrophysicists. Could such chemical tags help astronomers identify our own Sun's long-lost sibling stars?

Memory in silent neurons: How do unconnected neurons communicate? Posted: 31 Aug 2014 12:03 PM PDT According to a generally-accepted model of synaptic plasticity, a neuron that communicates with others of the same kind emits an electrical impulse as well as activating its synapses transiently. This electrical pulse, combined with the signal received from other neurons, acts to stimulate the synapses. How is it that some neurons are caught up in the communication interplay even when they are barely connected? This is the chicken-or-egg puzzle of synaptic plasticity that a team is aiming to solve.

Changing global diets is vital to reducing climate change Posted: 31 Aug 2014 12:02 PM PDT Healthier diets and reducing food waste are part of a combination of solutions needed to ensure food security and avoid dangerous climate change, say the team behind a new study.

Antarctic sea-level rising faster than global rate Posted: 31 Aug 2014 12:02 PM PDT A new study of satellite data from the last 19 years reveals that fresh water from melting glaciers has caused the sea-level around the coast of Antarctica to rise by 2cm more than the global average of 6cm. Researchers detected the rapid rise in sea-level by studying satellite scans of a region that spans more than a million square kilometers. The melting of the Antarctic ice sheet and the thinning of floating ice shelves has contributed an excess of around 350 gigatonnes of freshwater to the surrounding ocean.

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.

Hydrogen powers important nitrogen-transforming bacteria Posted: 29 Aug 2014 08:59 AM PDT Nitrite-oxidizing bacteria can use hydrogen as an alternative source of energy, an international team of researchers has found. The oxidation of hydrogen with oxygen enables their growth independent of nitrite and a lifestyle outside the nitrogen cycle.

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.

Not all phytoplankton in the ocean need to take their vitamins Posted: 29 Aug 2014 07:34 AM PDT Some species of marine phytoplankton, such as the prolific bloomer Emiliania huxleyi, which can grow so big it can be seen from space, can grow without consuming vitamin B1 (thiamine), researchers have discovered. Until now, many marine microbes with cells that have a nucleus -- eukaryotes -- were thought to depend on other organisms to produce thiamine. If this were the case, B1 would be a major factor in controlling the growth of algae such as E. huxleyi.

'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.

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.

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