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Science News for July 1, 2014


New compound blocks 'gatekeeper' enzyme to kill malaria

Researchers at the Walter and Eliza Hall Institute have developed a compound that blocks Plasmepsin V, a critical enzyme essential for malaria parasite survival. The compound, WEHI-916, has shown promising results in killing malaria parasites and could lead to effective treatment of all species of the parasite.

SourcePLOS·JournalPLOS Biology·DateJul 1, 2014

Short sleep, aging brain

Researchers at Duke-NUS found that short sleep is linked to faster brain ventricle enlargement and decline in cognitive performance. The study of 66 older Chinese adults suggests that seven hours of sleep per day may be optimal for brain health.

SourceDuke-NUS Medical School·JournalSLEEP·DateJul 1, 2014

Weekend emergency surgeries deadlier for children

A study published by Johns Hopkins Medicine found that children undergoing simple emergency surgeries on weekends are more likely to suffer complications and die than those treated during the week. The researchers analyzed 22 years' worth of surgical records involving nearly 440,000 pediatric admissions nationwide.

SourceJohns Hopkins Medicine·JournalJournal of Pediatric Surgery·DateJul 1, 2014

Solar panels light the way from carbon dioxide to fuel

Researchers at Princeton University have developed an efficient method for harnessing sunlight to convert carbon dioxide into formic acid, a potential alternative fuel. The process achieves nearly 2% energy efficiency, twice that of natural photosynthesis, and has the potential to store solar energy in fuel cells.

SourcePrinceton University·JournalJournal of CO2 Utilization·DateJul 1, 2014

Cancer risk: Aspirin and smoking affect aging of genes

Researchers have discovered that aspirin use slows down certain aging processes of the genome, while smoking accelerates them. The study found a significant correlation between aspirin use and reduced DNA methylation changes in healthy women over 50 years old, suggesting a possible mechanism for cancer prevention.

SourceUniversity of Basel·JournalJNCI Journal of the National Cancer Institute·DateJul 1, 2014

The biology of addiction risk looks like addiction

A new study published in Biological Psychiatry found that individuals at high risk for addiction share similar neurobiological signatures with addicted individuals. The research suggests a common brain mechanism that promotes the use of addictive substances in vulnerable people and those with long-standing habitual substance use.

SourceElsevier·JournalBiological Psychiatry·DateJul 1, 2014

One in six adolescents in the ER has experienced dating violence

A study found that one in six adolescents who visited the emergency department experienced dating violence. Factors associated with dating violence included African-American race, alcohol misuse, and depression. The study highlights the need for screening and intervention among youth to prevent future adult intimate partner violence.

SourceAmerican College of Emergency Physicians·JournalAnnals of Emergency Medicine·DateJul 1, 2014

New approach identifies cancer mutations as targets of effective melanoma immunotherapy

A new approach identified two mutated tumor targets, KIF2C and POLA2, that play important roles in cell proliferation and may stimulate immune responses. This study provides a technical solution to identify mutated tumor targets for adoptive T-cell therapy, which has shown promise in treating metastatic melanoma.

SourceAmerican Association for Cancer Research·JournalClinical Cancer Research·DateJul 1, 2014

Medicare-backed breast cancer screenings skyrocket, but do patients benefit?

A study by Yale University researchers found that Medicare spending on breast cancer screening increased significantly between 2001 and 2009, despite no corresponding decrease in new breast cancer cases. The use of digital mammography technology, which is more expensive than standard film technology, contributed to the increase.

SourceYale University·JournalJNCI Journal of the National Cancer Institute·DateJul 1, 2014

The inhibition of a protein opens the door to the treatment of pancreatic cancer

Researchers at IMIM have identified galectin-1 as a potential therapeutic target for pancreatic cancer, demonstrating improved survival rates of 20% in mice. The inhibition of this protein mainly affects the immune system and surrounding tumor cells, suggesting a new strategy for treating pancreatic cancer with minimal side effects.