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Science News for November 18, 2011


Heart rate recovery predicts clinical worsening in pulmonary hypertension

A new study found that heart rate recovery at one minute after a six-minute walking distance test is highly predictive of clinical worsening and time to clinical worsening in patients with idiopathic pulmonary arterial hypertension. Patients with low heart rate recovery were more likely to experience clinical worsening events and had s...

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateNov 18, 2011

Tweaking a gene makes muscles twice as strong

Researchers have discovered a new way to build muscle by suppressing a natural inhibitor, resulting in mice and worms with super-strong muscles. This breakthrough could lead to treatments for age-related or genetics-related muscle degeneration, as well as applications for athletes and individuals with genetic muscular dystrophy.

SourceSalk Institute·JournalCell·DateNov 18, 2011

Metabolic syndrome biomarkers predict lung function impairment after exposure to WTC dust

Researchers found that dyslipidemia and elevated heart rate increased the risk of developing abnormal lung function, while elevated amylin levels reduced this risk. The study suggests that systemic inflammation may play a role in promoting lung function impairment after particulate exposure.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateNov 18, 2011

Protection from severe malaria explained

Researchers discovered that a degradation product of defective hemoglobin blocks the establishment of a trafficking system used by the malaria parasite, preventing circulatory disorders and neurological complications. The study provides new insights into the molecular mechanism behind the protective effect of sickle-cell anemia against...

SourceHeidelberg University Hospital·JournalScience·DateNov 18, 2011

Chalmers scientists create light from vacuum

Scientists at Chalmers University of Technology have succeeded in creating light from vacuum by capturing photons that appear and disappear in the vacuum. The experiment confirms a fundamental principle in quantum mechanics, demonstrating the existence of virtual particles that can become real photons.

SourceSwedish Research Council·JournalNature·DateNov 18, 2011