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Science News for December 2, 2008


Climate change setback for acidified rivers

A 25-year study on Welsh streams found that climate change hampers long-term recovery from acid rain effects. Despite improvements in acid levels, only four new insect species colonized the improving rivers, falling short of expected numbers.

SourceWiley·JournalJournal of Applied Ecology·DateDec 2, 2008

Cold Spring Harbor Protocols features tissue culture methods for immune cells and neurons

The journal Cold Spring Harbor Protocols presents two articles detailing experimental culture methods for cells from the immune system and the nervous system. These protocols enable researchers to isolate and grow specialized cells like macrophages and cerebellar granule neurons, facilitating studies on their functions and interactions.

SourceCold Spring Harbor Laboratory·JournalCold Spring Harbor Protocols·DateDec 2, 2008

Nearly 5 percent of the US population suffers from persistent depression or anxiety

A study by UCLA researchers found that approximately 4.7% of the nation's population suffers from persistent depression or anxiety disorders. Many individuals who remain ill receive modest increases in medication use but no significant increase in counseling, highlighting a need for improved treatment and insurance arrangements.

SourceUniversity of California - Los Angeles·JournalPsychiatric Services·DateDec 2, 2008

Gene which protects against lung cancer identified

Researchers at University of Nottingham identified the tumour suppressor gene LIMD1 as a protector against lung cancer. The study found that LIMD1 was missing in majority of lung cancer samples, indicating its protective role. This breakthrough could lead to early screening techniques and treatments for lung cancer.

SourceUniversity of Nottingham·JournalProceedings of the National Academy of Sciences·DateDec 2, 2008

Exposure to secondhand smoke reduced

Exposure to secondhand smoke has been reduced by 25-40% since 2000, resulting in a 25-30% decrease in its clinical burden. Treatment costs attributed to passive smoking have also decreased by approximately $1.8 billion to $6.0 billion annually.

SourceElsevier Health Sciences·JournalAmerican Journal of Preventive Medicine·DateDec 2, 2008

Ecological impact of African cities

African cities are experiencing rapid growth, transforming natural resource use and affecting rural areas. The main driver of deforestation is not fuel wood demand but rather agricultural land clearing in peri-urban areas to feed growing urban populations.

SourceWiley·JournalAfrican Journal of Ecology·DateDec 2, 2008

Einstein researchers develop technique to count messages made by single genes

Researchers at Albert Einstein College of Medicine have developed a new technique to count individual mRNA molecules within single cells, revealing detailed insights into gene expression and regulation. The study found that housekeeping genes are not always expressed at a constant level, but rather exhibit restricted variability.

SourceAlbert Einstein College of Medicine·JournalNature Structural & Molecular Biology·DateDec 2, 2008

Invasive garden ants as new pest insects in Europe

A new study reveals invasive garden ants (Lasius neglectus) originated from the Black Sea region and are able to thrive in temperate climates. They can spread rapidly through large potted plants and human movement, posing a significant threat to natural biodiversity.

SourcePLOS·JournalPLOS ONE·DateDec 2, 2008

Plants display 'molecular amnesia'

Researchers at McGill University have discovered that plants can forget epigenetic silencing, a process crucial for breeding enhanced crops. This 'molecular amnesia' varies depending on genome position, offering new avenues for understanding gene regulation and developing cancer treatments.

SourceMcGill University·JournalPLOS Genetics·DateDec 2, 2008

Ship-in-a-bottle kit on a microchip

Researchers have developed a new method to equip miniaturized laboratories with moving parts using magnetic colloidal particles. The technique allows for the creation of complex networks of individual components driven by a single magnetic field.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateDec 2, 2008

New test for depression

Researchers at UCL developed a new universal test to predict the risk of major depression, which was tested in 6,000 people and found accurate in predicting future episodes. The tool, predictD, could be used by family doctors and local clinics to identify those at risk for whom prevention might be most useful.

SourceUniversity College London·JournalArchives of General Psychiatry·DateDec 2, 2008

When childhood dies

The Lancet Series on Child Maltreatment aims to provide a rigorous summary of scientific evidence to inform policy discussions. The series emphasizes the importance of training, recognition strategies, and evidence-based approaches to safeguard children from abuse.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 2, 2008

Scientists produce illusion of body-swapping

Cognitive neuroscientists successfully created an illusion of body-swapping by manipulating sensory impressions, allowing subjects to perceive a mannequin's body as their own. This discovery sheds light on how the brain constructs an internal image of the body and has potential practical uses in VR applications.

SourcePLOS·JournalPLOS ONE·DateDec 2, 2008

Professionals significantly under-report child abuse

Experts argue that schools and community health services contribute significantly to child maltreatment reporting, highlighting the need for improved recognition and response. The study suggests that policy approaches focusing on supportive interventions may be more effective than those prioritizing protection.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 2, 2008

Child maltreatment: 3 other perspectives

The Lancet Series on Child Maltreatment highlights the importance of supporting paediatricians who work with child maltreatment cases. Professor Jenny suggests that regulation of experts and media coverage can help safeguard children. The series also emphasizes the need for a public-health approach to address social inequality and pare...

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 2, 2008

It takes 2 to tango

Researchers at Max Planck Institute of Neurobiology find that transmitter terminals play an active role in synapse assembly and disintegration, contributing to brain adaptability. This discovery challenges the long-held assumption that only the receiver side of a synapse is involved in reorganization.

SourceMax-Planck-Gesellschaft·JournalNeuron·DateDec 2, 2008