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Science News for October 18, 2007


Influenza spreads readily in winter conditions

A new study by researchers links low temperatures and relative humidities to the rapid spread of influenza, validating the seasonal flu theory. The study found that low relative humidities facilitate viral transmission, with opposite effects at higher humidity levels.

SourcePLOS·JournalPLOS Pathogens·DateOct 18, 2007

Early intervention dramatically improves outcomes for new dialysis patients

A study found that a structured quality improvement program called RightStart improved outcomes for new dialysis patients, including significant reductions in mortality and hospitalization rates. The program, which included education, close medical follow-up, and self-empowerment, was associated with better nutrition, less anemia, and ...

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateOct 18, 2007

Mice offer clues to the roots of human resilience

A new mouse study found that mice who are more susceptible to social defeat show increased levels of a growth factor known as BDNF in their brains' reward circuits, which promotes plasticity and learning. Resilient mice, on the other hand, did not exhibit this chemical rise, suggesting a potential link between BDNF and human resilience.

SourceCell Press·JournalCell·DateOct 18, 2007

When less is more

A multi-cultural study found that European-Americans are more easily made less happy by negative events and recover at a slower rate than their Asian counterparts. On the other hand, Koreans, Japanese, and Asian-Americans are less happy in general but recover their emotional equilibrium more readily after a setback.

SourceUniversity of Virginia·JournalJournal of Personality and Social Psychology·DateOct 18, 2007

JCI table of contents: Oct. 18, 2007

Researchers have discovered that hyperacidification of the TGN causes increased activity of furin, leading to tissue fibrosis in individuals with CF. Additionally, a new study on EHEC O157:H7 has identified the role of type IV pili in intestinal adherence and immune response.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 18, 2007

Internists endorse 2007-08 adult immunization schedule and publish in Annals of Internal Medicine

The American College of Physicians (ACP) has endorsed the 2007-08 adult immunization schedule, which recommends vaccination for varicella and zoster in adults. The CDC's adult immunization schedule aims to reduce vaccine-preventable deaths, with approximately 50,000 Americans dying each year from such diseases.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateOct 18, 2007

Elephants tell human friends from foes by scent and clothing color

A new study reveals that elephants can categorize human ethnic groups into subclasses based on subtle cues such as scent and garment color. Elephants in Kenya reacted with greater fear when detecting the scent of garments worn by Maasai warriors, while also responding aggressively to red clothing traditionally worn by young Maasai men.

SourceCell Press·JournalCurrent Biology·DateOct 18, 2007

What next for the NHS?

The NHS must address issues of fairness, where doctors are scarce in areas with greatest need; responsiveness, including evening/Saturday opening of general practices; and safety, particularly concerning healthcare-associated infections. The organization also needs to improve effectiveness by adopting new techniques and approaches.

SourceThe Lancet_DELETED·JournalThe Lancet·DateOct 18, 2007

Transgenics transformed

Researchers create artificial plant chromosomes from small rings of naturally occurring plant DNA, allowing for the introduction of multiple genes at once. The technology enables more consistent and controlled expression, potentially increasing agricultural productivity and improving biofuel production.

SourceUniversity of Chicago Medical Center·JournalPLOS Genetics·DateOct 18, 2007

How 1 bacteria colonizes the gut and causes food poisoning

Researchers found that EHEC O157:H7 uses a protein structure called the hemorrhagic coli pilus to attach to human intestinal cells. This adhesion enables bacteria to cause severe abdominal cramps and bloody diarrhea, particularly in vulnerable populations such as the young and elderly.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 18, 2007

Enzyme synergy shown to perpetuate sleeping sickness

Researchers at the University of Iowa and Veterans Affairs Medical Center discovered how African trypanosomes shed their VSG surface protein to evade the immune system of tsetse flies. This enzyme synergy is a key step in the pathogenesis of sleeping sickness, which affects 60 million people in Sub-Saharan Africa.

SourcePLOS·JournalPLOS Pathogens·DateOct 18, 2007

Neandertals, humans share key changes to 'language gene'

A recent study reveals that Neandertals shared key changes with modern humans in the FOXP2 gene, which plays a crucial role in speech and language. This finding suggests that Neandertals may have possessed some prerequisites for language, challenging previous estimates of when human language emerged.

SourceCell Press·JournalCurrent Biology·DateOct 18, 2007

Computer solution to delivery problem

Researchers have developed a computer solution to cut journey times of courier services, reducing fuel consumption and improving timely drop-offs. The new approach uses a heuristic-based model that can process real-time requests and re-route vehicles to minimize distance traveled.

SourceInderscience Publishers·JournalInternational Journal of Logistics Systems and Management·DateOct 18, 2007

Research for a better old age

The New Dynamics of Ageing Programme has funded 12 research projects, totaling £3million, to investigate various aspects of ageing. These studies aim to enhance the quality of life, productivity, and self-sufficiency of older adults, with a focus on improving their health, social engagement, and community support.

Brightness and darkness as perceptual dimensions

A new study suggests that achromatic colors exist in a two-dimensional (2-D) color space composed of brightness and darkness dimensions. This model generalizes to the chromatic dimensions of color perception, indicating six perceptual dimensions rather than the conventional three.

SourcePLOS·JournalPLOS Computational Biology·DateOct 18, 2007

Schools not sustaining mental health aid to children displaced by Hurricanes Katrina and Rita

A RAND Corporation study found that many schools in Louisiana, Mississippi, Alabama, and Texas struggled to provide ongoing mental health support to students displaced by the hurricanes. Despite initial efforts, schools often returned to academics-only focus within six months, citing barriers such as lack of resources and staff training.

SourceRAND Corporation·JournalPsychiatric Services·DateOct 18, 2007

Sidestepping cancer's chaperone

Researchers at UMass Medical School have identified a new pathway for cancer cell growth and survival, providing a blueprint for the design of novel anticancer agents. The study found that targeting the Hsp90 chaperone in the mitochondria can induce massive tumor cell death while sparing normal cells.

SourceUMass Chan Medical School·JournalCell·DateOct 18, 2007