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Science News for December 15, 2010


Where unconscious memories form

A study published in Neuron found that the perirhinal cortex plays a crucial role in forming unconscious conceptual memories. Researchers used functional magnetic resonance imaging (fMRI) scans to map brain activity while participants performed memory tests, revealing that damage to this area impairs memory formation.

New research finds delaying surgical procedures increases infection risk and health care costs

A recent study published in the Journal of the American College of Surgeons found that delaying elective surgical procedures after hospital admission significantly increases the risk of infectious complications. The study analyzed data from over 163,000 patients and found that infection rates increased with delays in procedures such as...

SourceWeber Shandwick Worldwide·JournalJournal of the American College of Surgeons·DateDec 15, 2010

Link between cholesterol compound and multiple sclerosis unlikely, researchers say

A new study published in the Journal of Lipid Research found that oxysterols, previously thought to be associated with multiple sclerosis, are not present in significant amounts in MS patients. The research contradicts a previous study and suggests the potential role of oxysterols in MS needs reconsideration.

SourceAmerican Society for Biochemistry and Molecular Biology·JournalJournal of Lipid Research·DateDec 15, 2010

Plasma therapy: An alternative to antibiotics?

A study published in Journal of Medical Microbiology found that low-temperature plasma was effective in killing drug-resistant bacteria causing wound infections, and increased the rate of wound healing. Plasma therapy may offer a promising method to treat chronic wound infections where other approaches fail.

SourceMicrobiology Society·JournalJournal of Medical Microbiology·DateDec 15, 2010

Dealing with an epidemic of loneliness

A UK doctor shares a poignant story of an elderly patient struggling with loneliness, highlighting the need for companionship and support. The Lancet argues that tackling loneliness requires a multi-faceted approach, including social clubs, workshops, and simply spending time with neighbors.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 15, 2010

Ancient forest emerges mummified from the Arctic

A team of researchers has discovered a mummified forest in the Arctic that provides valuable insights into how plants adapted to a long-ago global cooling event. The trees, which are estimated to be 2-8 million years old, show signs of stress and suffered from extreme conditions, including half a year of darkness and cooling climate.

MDMA: Empathogen or love potion?

Research suggests that MDMA produces empathogenic effects, increasing feelings of friendliness, playfulness, and loving feelings in individuals. However, it also reduces the ability to recognize facial expressions of fear, potentially leading to increased social risk-taking.

SourceElsevier·JournalBiological Psychiatry·DateDec 15, 2010

Nanomaterials in our environment

A study by the University of Kentucky found that earthworms can absorb copper nanoparticles present in soil, raising concerns about potential exposure to humans and animals. The research has significant implications for understanding the interactions of nanomaterials in the environment.

SourceAmerican Society of Agronomy·JournalJournal of Environmental Quality·DateDec 15, 2010

Study classifies and uses artificial proteins to analyze protein-protein interfaces

Researchers found that approximately 90% of protein-protein interfaces have close structural neighbors, and most interfaces are roughly planar. The study suggests that the interfaces' structures depend on simple physics principles and are primed for promiscuity, which could help explain biological phenomena and inform drug discovery.

SourceGeorgia Institute of Technology·JournalProceedings of the National Academy of Sciences·DateDec 15, 2010

deCODE discovers genetic markers that improve the power of PSA testing for detecting prostate cancer

Scientists from deCODE genetics and academic colleagues report discovering genetic markers that impact individual baseline levels of prostate-specific antigen (PSA). Analyzing four SNPs in tandem with genetic risk factors detected by the deCODE ProstateCancer test yields substantial improvement in PSA screening efficacy.

SourcedeCODE genetics·JournalScience Translational Medicine·DateDec 15, 2010

Doctors on Facebook risk compromising doctor-patient relationship

A survey of 405 postgraduate trainee doctors found that nearly three-quarters had a Facebook profile, with many sharing personal information and photos. The authors warn that this could lead to an ethically problematic situation if patients access their profiles, as it may be misinterpreted outside its original context.

SourceBMJ Group·JournalJournal of Medical Ethics·DateDec 15, 2010

Insight offers new angle of attack on variety of brain tumors

A new research paper published in the Journal of the National Cancer Institute reveals a genetic mutation that leads to abnormal metabolic processes in gliomas, potentially leading to targeted therapies. The study shows that almost all tumors with IDH mutations have the same methylation pattern.

SourceBrown University·JournalJNCI Journal of the National Cancer Institute·DateDec 15, 2010

Close proximity leads to better science

Researchers found that papers with authors in the same building were cited 45% more than those in different buildings. The closer first and last authors are located, the more impactful the paper is, according to a new Harvard study.

SourcePLOS·JournalPLOS ONE·DateDec 15, 2010

Seaweed as biofuel? Metabolic engineering makes it a viable option

A University of Illinois research team has developed a strain of yeast that can efficiently ferment galactose, a key component of seaweed, making it a viable option for biofuel production. The discovery improves the economic viability of marine biofuels by increasing fermentation rates and reducing production costs.