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Science News for September 21, 2010


Results of the placement of multiple endoscopic stents for postoperative biliary strictures remains excellent after long-term follow-up

A new study reports a low stricture recurrence rate of postoperative biliary strictures after endoscopic stent placement, with successful retreatment options available. The study followed up on patients who underwent the treatment from 2001 to 2010, finding that most remained asymptomatic and had normal liver function tests.

SourceAmerican Society for Gastrointestinal Endoscopy·JournalGastrointestinal Endoscopy·DateSep 21, 2010

Too many systematic reviews?

A growing concern is the increasing volume of clinical trials and systematic reviews published every day. The authors propose reducing unnecessary trials to prioritize truly systematic reviews, ensuring that patient needs are met through valid answers. Open access to these resources is also emphasized.

SourcePLOS·JournalPLOS Medicine·DateSep 21, 2010

A single application for every device

The Webinos project aims to create a universal application platform for cross-platform use of services and technologies across mobile, PC, TV, and in-car devices. The consortium is developing an open source platform and software components that will enable industry-wide collaboration and eliminate economic barriers.

The Achilles' heel of tendons

Researchers at Case Western Reserve University have discovered the weakest link in tendons, a crucial connection between bones and muscles. The discovery focuses on collagen fibrils, which are five times stronger than tendons but may hold the key to increasing flexibility and healing damage.

SourceCase Western Reserve University·JournalBiophysical Journal·DateSep 21, 2010

Inner voice plays role in self-control

A study by researchers at the University of Toronto Scarborough found that using an inner voice helps individuals exercise self-control and resist impulsive decisions. The team conducted tests where participants were unable to verbalize messages to themselves, leading to increased impulsivity.

SourceUniversity of Toronto·JournalActa Psychologica·DateSep 21, 2010

Stroke gene discovered

Researchers have discovered that an enzyme called NOX4 produces hydrogen peroxide after a stroke, leading to nerve cell death. Inhibiting this enzyme with a new drug reduces brain damage and preserves brain functions in mice with stroke.

SourcePLOS·JournalPLOS Biology·DateSep 21, 2010

Brain cell communication: Why it's so fast

Researchers at the University of Copenhagen have discovered that brain cell communication relies on three copies of the 'linking bridge' or SNARE complex to enable rapid fusion of vesicles with membranes. This process allows for simultaneous signal transmission, which is crucial for cognitive functions and overall brain activity.

SourceUniversity of Copenhagen·JournalScience·DateSep 21, 2010

Research sheds light on altruism

Researchers at Michigan State University used digital evolution techniques to study altruism in species, finding that genes are more likely to help those physically similar to them. This challenges traditional kin selection theory and raises the possibility of life on other planets based on shared genes rather than familial units.

Cardiac Cath Lab Director

The new bimonthly journal Cardiac Cath Lab Director is being launched by SAGE, providing administrators and managers with the latest research and evidence-based information on cardiac catheterization procedures. Topics include cardiovascular anatomy, department administration, diagnostic techniques, and patient safety.

SourceSAGE·JournalCardiac Cath Lab Director·DateSep 21, 2010

Asian efforts in AIDS vaccine development step up

The formation of AVAN, the AIDS Vaccine for Asia Network, aims to accelerate research and development of an AIDS vaccine through government advocacy and improved coordination. With over 5 million people infected and 500 million at risk, regional efforts must be strengthened to combat HIV in Asia.

SourcePLOS·JournalPLOS Medicine·DateSep 21, 2010

War on cancer produces collateral damage to the heart

This special issue examines the ways cancer treatment affects cardiovascular function and overall survival, highlighting key challenges and potential strategies for minimizing collateral damage. Key findings include the need for cardiac outcomes data and evidence-based practice guidelines to mitigate heart-related complications.

SourceElsevier Health Sciences·JournalProgress in Cardiovascular Diseases·DateSep 21, 2010

The Joy of sets: For ants and trees, multiple partners are a boon

A University of Florida study reveals that trees with sequential ant partners produce more offspring than those with lifelong associations. The research shows that even 'cheating' ants can be beneficial by causing trees to produce seeds before being killed, and another ant species defends the tree but later allows it to reproduce.

SourceUniversity of Florida·JournalProceedings of the National Academy of Sciences·DateSep 21, 2010

OHSU research suggests compound administered during some bone marrow transplants elevates risks

Research at OHSU's Vaccine and Gene Therapy Institute suggests that G-CSF, a hormone stimulating stem cell growth, can reactivate human cytomegalovirus in bone marrow recipients, increasing their risk of infection. The study highlights the need for factoring in the risks associated with G-CSF use during transplants.

SourceOregon Health & Science University·JournalCell Host & Microbe·DateSep 21, 2010

Community-based treatment of malaria, pneumonia could save lives, BU study finds

A BU study shows that empowering community health workers with a rapid diagnostic test and antibiotics can significantly increase the proportion of appropriately timed antibiotic treatments for non-severe pneumonia and decrease inappropriate use of anti-malarials. The study found a five-fold increase in timely treatment of pneumonia.

SourceBoston University School of Medicine·JournalPLOS Medicine·DateSep 21, 2010

Hormone oxytocin improves social cognition but only in less socially proficient individuals

Researchers found that oxytocin selectively improves social cognitive abilities in less socially proficient individuals but has little effect on those who are more socially proficient. The study suggests oxytocin may hold potential for treating social deficits in people with disorders marked by deficits in social functioning.

Imatinib treatment interruption shows no benefit for patients with advanced gastrointestinal cancer

A new study published in The Lancet Oncology found that imatinib treatment interruption after 3 years results in rapid relapse and low progression-free survival. Patients who stopped treatment experienced significant tumour growth and poor overall survival, highlighting the need for continuous treatment to maintain cancer control.

SourceThe Lancet_DELETED·JournalThe Lancet Oncology·DateSep 21, 2010

New study links political connections to corporate corruption

A new study from the journal Financial Management found that politically connected firms enjoy higher leverage, lower taxes, and regulatory protection. This study highlights the benefits of having government ties for corporate success, suggesting distortions in public resource allocation are common globally.

SourceWiley·JournalFinancial Management·DateSep 21, 2010