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Science News for April 8, 2016


Controlling 'bad cholesterol' production could prevent growth of tumors, study finds

Researchers found that cancer cells can regulate the body's lipid metabolism to increase production of lipids. Minimizing liver production of LDL can deprive tumors of their constant supply and reduce growth. The study aims to test existing medications for hypercholesterolemia on patients undergoing cancer treatment.

Novel optogenetic tool

Scientists have created an optogenetic tool that can control specific G-protein-coupled signalling pathways in the brain with high temporal precision. By using different-coloured light, researchers can switch these pathways on and off, offering new insights into the role of certain signalling pathways in disease.

SourceRuhr-University Bochum·JournalCurrent Biology·DateApr 8, 2016

Simultaneous cocaine, alcohol use linked to suicide risk

A new study found that simultaneous cocaine and alcohol use is a red flag for suicide risk, with the risk being 2.4 times higher among those using both substances. The study also showed that substance misuse was less likely an indicator of suicide risk among whites and women, but more likely among older adults.

SourceBrown University·JournalCrisis·DateApr 8, 2016

Social peers' death may impact CEO decisions

Researchers found CEOs of large US firms made fewer acquisitions following an independent director's death. The analysis suggests CEOs may reevaluate priorities and place less emphasis on external goals.

SourceWiley·JournalStrategic Management Journal·DateApr 8, 2016

Physicists discover flaws in superconductor theory

Researchers discovered significant deviations from the Critical State Model, revealing unexpected behavior favorable for practical applications. The study suggests using 'trapped field magnets' in various new ways and applications, including replacing expensive low-temperature superconducting magnets with more affordable alternatives.

SourceAmerican Institute of Physics·JournalJournal of Applied Physics·DateApr 8, 2016

New research from Pear Bureau Northwest

A randomized, placebo-controlled crossover clinical trial found that regular fresh pear consumption significantly lowered systolic blood pressure and pulse pressure in middle-aged men and women with metabolic syndrome. The study, led by Dr. Sarah A. Johnson, suggests pears may be a potential tool to improve cardiovascular risk factors.

Many ICU patients trade critical illness for new illness, ICU-acquired weakness

A study found that some ICU patients experience persistent muscle wasting even after recovery from critical illness, leading to debilitating disability. The loss of satellite cells is a key factor in this process, contributing to age-related muscle loss and potentially permanent changes in muscle biology.

SourceSt. Michael's Hospital·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateApr 8, 2016

How the index finger can be fooled

A new study by Bielefeld University's CITEC researchers reveals that the human brain can be fooled into perceiving a larger displacement of the index finger when it actually remains stationary, due to changes in contact area with the skin. This finding has implications for developing virtual sense of touch technologies.

SourceBielefeld University·JournalCurrent Biology·DateApr 8, 2016

'Marijuana receptor' might hold the key to new fertility treatments for men

Researchers found that a cannabinoid receptor called CB2 helps regulate the creation of sperm, providing evidence for marijuana's impact on male fertility and suggesting a potential therapeutic strategy for treating male infertility. The study suggests that a balance of CB2 activation is required for proper spermatogenesis.

A newly discovered way for cells to die

Scientists at Rockefeller University have identified a new way for cells to die in the linker cell of Caenorhabditis elegans, resembling neuronal death in humans. The discovery suggests that this process might be involved in neurodegenerative disorders and could serve as a target for future drugs.