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Science News for February 22, 2009


Arsenic and old toenails

Researchers from the University of Leicester and British Geological Survey have devised a method to identify levels of environmental arsenic by testing toenail clippings. They found elevated levels of arsenic in people living close to a former arsenic mine, but more research is needed to confirm potential health risks.

SourceUniversity of Leicester·JournalJournal of Environmental Monitoring·DateFeb 22, 2009

Safer nanoparticles spotlight tumors, deliver drugs

Researchers have created miniscule silicon flakes that glow brightly, slowly releasing cancer drugs before breaking down into harmless by-products. The particles showed promising results in mice, reducing tumor growth over several weeks.

SourceUniversity of California - San Diego·JournalNature Materials·DateFeb 22, 2009
Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Rett Syndrome Research Trust advisor makes significant discovery

Researchers found that MeCP2-deficient astrocytes stunt neighboring neuron growth but can recover when exposed to normal glia. This discovery supports the use of glial cells as targets for drug development, potentially leading to new treatments for Rett Syndrome and related MECP2 disorders.

SourceRett Syndrome Research Trust·JournalNature Neuroscience·DateFeb 22, 2009

New clues to healing arthritis caused by traumatic injury

Researchers at Duke University Medical Center found a strain of laboratory mice with 'superhealing' powers that resist inflammation and arthritis after a knee injury. The study revealed the mechanisms of post-traumatic arthritis and could lead to therapies for this condition, which affects younger people.

SourceDuke University Medical Center·DateFeb 22, 2009

Scientists mine drugs database for new diabetes treatment

Researchers at the University of Oxford have developed a cheap and efficient method to discover new drugs for type 2 diabetes. They identified a small molecule called Ned-19, which plays a crucial role in insulin secretion, representing a brand new target for diabetes drugs.

SourceBiotechnology and Biological Sciences Research Council·JournalNature Chemical Biology·DateFeb 22, 2009
Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

Secrets behind high temperature superconductors revealed

Researchers found oxypnictides exhibit similarities with copper-oxide high temperature superconductors, both emerging from magnetic states. This discovery may lead to designing new superconducting materials and resolving the underlying physics behind high temperature superconductors.

SourceQueen Mary University of London·JournalNature Materials·DateFeb 22, 2009

NC State study finds genes important to sleep

A new NC State University study reveals that fruit flies have a genetically wired sleep pattern, with males sleeping more during the day and females having more frequent bouts of sleep. The research identified 1,700 genes associated with sleep variability, shedding light on how these genes may influence human sleep.

SourceNorth Carolina State University·JournalNature Genetics·DateFeb 22, 2009

Calculating gene and protein connections in a Parkinson's disease model

Researchers have created an algorithm that analyzes gene expression and protein production to identify genes and pathways that can affect cell survival. The new method, ResponseNet, has led to new insights into the connection between alpha-synuclein toxicity and basic cell processes.

SourceWhitehead Institute for Biomedical Research·JournalNature Genetics·DateFeb 22, 2009
Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.