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Science News Archive 2006 - Page 33


Page 33 of 178

Immune cell communication key to hunting viruses, Jefferson immunologists show

Researchers created a biosensor using quantum dots to mimic the clustering of MHC proteins on target cells, revealing strong contributions from non-viral peptide-MHC interaction with co-receptors. This cooperativity suggests that a single virus-MHC complex recognized in self-MHC complexes can activate a T-cell response.

SourceThomas Jefferson University·JournalProceedings of the National Academy of Sciences·DateOct 25, 2006

Exposure to sunlight could reduce asthma

Researchers have found that measured doses of ultraviolet light can significantly reduce the development of asthma-like symptoms in mice. Exposure to UV light before allergen exposure also produces a cell type that can prevent some asthma symptoms when transferred into other mice.

Alzheimer's alarm over anesthetics

Recent test tube and animal experiments suggest that certain general anaesthetics could increase the risk of developing Alzheimer's disease and other memory problems in elderly patients. The studies also highlight the need for more careful recording of anaesthetic combinations and doses to assess potential risks.

SourceNew Scientist·JournalThe New Scientist·DateOct 25, 2006

Blood markers predict risk for recurrent stroke and mortality

Researchers at Columbia University Medical Center found that elevated inflammatory biomarkers, such as Lp-PLA2 and hs-CRP, are associated with increased risk of recurrent stroke and mortality after a first stroke. The study's findings may lead to the use of prophylactic treatments to reduce stroke risk in people with elevated biomarkers.

SourceColumbia University Irving Medical Center·JournalArchives of Internal Medicine·DateOct 24, 2006

Genetic variation impacts aspirin's effectiveness in preventing colon cancer, Dartmouth study finds

A recent study by Dartmouth researchers found that individuals with a specific genetic variation in their ODC gene are more likely to benefit from aspirin use in preventing colon cancer. These individuals were 23% less likely to develop new adenomas and 49% less likely to develop more advanced lesions.

SourceDartmouth College·JournalJNCI Journal of the National Cancer Institute·DateOct 24, 2006

Significant amount of binge eating occurs in restaurants

A recent study published in Western Journal of Nursing Research found that about 30% of binges occur at restaurants, contradicting the perception that binge eating takes place in private. Restaurant eating habits contribute to the development of obesity, as large portion sizes and frequent dining out can lead to excessive calorie intake.

SourceSAGE·JournalWestern Journal of Nursing Research·DateOct 24, 2006

Childhood abuse can impact victims' adult relationships

A recent study found that victims of childhood abuse tend to transfer their feelings towards their abusive parent to new people, leading to negative reactions. This 'transference' can affect adult relationships and highlight the importance of understanding the long-term impact of childhood trauma.

SourceSAGE·JournalPersonality and Social Psychology Bulletin·DateOct 24, 2006

Viral marker of human migration suspect

Researchers found that some viruses, like the human polyomavirus JCV, may be evolving at higher rates than previously assumed. The virus is traditionally used as a genetic marker for human migration and evolution, but its reliability has been called into question by this new study.

SourcePenn State·JournalJournal of Virology·DateOct 24, 2006

When is a supersolid not quite so super?

Researchers at Brown University use a kitchen table physics experiment to study supersolid helium, finding evidence of its behavior in 3 out of 13 trials. The team suggests that a layer of superfluid helium only a single molecule thick forms at grain boundaries, creating a path for movement through the solid.

SourceBrown University·JournalScience·DateOct 24, 2006

Cougar predation key to ecosystem health

A new study by Oregon State University researchers found that cougar predation has a significant impact on the environment, leading to severe ecological damage and loss of biodiversity in Zion National Park. The 'trophic cascade' effect, where the decline of a major predator leads to changes in herbivore populations and behavior, is ev...

SourceOregon State University·JournalBiological Conservation·DateOct 24, 2006

SRI medication effective in treating compulsive hoarding patients

A study of 79 patients diagnosed with obsessive-compulsive disorder (OCD) and compulsive hoarding syndrome found that serotonin reuptake inhibitor (SRI) medication, paroxetine, significantly improved symptoms. Compulsive hoarding is a psychiatric disorder characterized by failure to discard objects due to anxiety and excessive clutter.

SourceUniversity of California - San Diego·JournalJournal of Psychiatric Research·DateOct 24, 2006

Flu vaccine appears safe for young children

A large safety study found that the flu vaccine is not associated with an increased risk of serious conditions in young children. The study analyzed data on over 45,000 children who received the trivalent inactivated influenza vaccine between 1991 and 2003.

SourceJAMA Network·JournalJAMA·DateOct 24, 2006

Racial disparities high in Medicare plans

A new study from Harvard Medical School and Brown Medical School shows that racial disparities in care cannot be attributed to low-performing health plans. The research found that high-performing plans and low-performing plans have comparable levels of disparities in key health measures.

SourceHarvard Medical School·JournalJAMA·DateOct 24, 2006

Always keeping a safe distance

Researchers at MPI-CBG defined the distance between Kinesin-1 and microtubules, explaining how it avoids collisions. This finding sheds light on refined motor proteins' ability to navigate cells efficiently.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateOct 24, 2006

Researchers find 'zip code' spurs cargo transport in neurons

Researchers at Brown University have identified a peptide that can spur cargo transport in nerve cells, shedding light on the complex intracellular transport system inside nerve cells. The discovery could help scientists better understand nerve cell function and test possible therapies for neurodegenerative diseases such as Alzheimer's.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateOct 24, 2006