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Science News for February 7, 2008


Bone complications due to cystic fibrosis have a genetic cause, according to an MUHC study

A recent MUHC study reveals that cystic fibrosis-related bone problems are an additional pathology stemming from the Cftr gene mutation, not a side effect of treatment. The study found that mice with the mutation have lower bone mineral density and mass than control mice, without pancreatic insufficiency or steroid treatment.

SourceMcGill University Health Centre·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateFeb 7, 2008

Root or shoot? EAR calls the shots

Researchers at the Salk Institute discovered a six-amino acid protein sequence, EAR domain, which ensures plants are neither all root nor all shoot. The study clarifies the purpose of the EAR motif and explains how mutations in TOPLESS gene can switch plant cell's fate from shoot to root.

SourceSalk Institute·JournalScience·DateFeb 7, 2008

Ecologists must join humanity's rush to the cities

Cities face significant sustainability challenges, but urban ecologists can help by applying ecological principles to design and develop projects. By integrating biodiversity and ecosystem function into urban planning, researchers aim to create sustainable environments that support human well-being.

SourceCSIRO Australia·JournalScience·DateFeb 7, 2008

Genome-wide survey nets key melanoma gene

Researchers identified a protein, insulin-like growth factor binding protein 7 (IGFBP7), that regulates melanocytes' decision to ward off cancer by entering a programmed hibernation or committing suicide. This discovery offers new hope for treating deadly melanoma by harnessing the body's natural defense pathway.

Elderly more likely to deny smoking when asked, says Case Western Reserve University researcher

A study published in the Journal of Health Care for the Poor and Underserved found that elderly adults are more likely to deny smoking when asked. Researchers used biomarkers like cotinine to validate self-reported nicotine use, revealing a significant discrepancy between true smokers and those who denied it.

SourceCase Western Reserve University·JournalJournal of Health Care for the Poor and Underserved·DateFeb 7, 2008

New cause identified for necrotic enteritis in chicken

Researchers have reidentified the main cause of necrotic enteritis in chickens as Clostridium perfringens, producing extracellular toxins that attack the bird's intestines. The discovery of a new toxin, NetB, has led to hope for the development of effective vaccines within two years.

SourcePLOS·JournalPLOS Pathogens·DateFeb 7, 2008

The trouble with hybrids

Researchers question the environmental sustainability of hybrid vehicle technology, citing its high cost and potential to slow the adoption of more innovative technologies like fuel-cell cars. The study suggests that the current craze for hybrids may be a red light for climate change and emissions reduction efforts.

SourceInderscience Publishers·JournalInternational Journal of Automotive Technology and Management·DateFeb 7, 2008

Researchers decode genetics of rare photosynthetic bacterium

The researchers' successful sequencing of the cyanobacterium's genome has revealed its genetic secrets, shedding light on how it produces chlorophyll d and absorbs far-red light. This discovery holds potential for plant research and could lead to the development of crops that can harness a wider range of light spectrum.

SourceArizona State University·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2008

Team treatment for depression cuts medical costs

A team approach to treating depression in older adults reduces total healthcare costs, with patients receiving IMPACT care having lower average costs over a four-year period. The cost-effectiveness of the IMPACT model makes it an attractive option for health organizations, which have already implemented it to improve patient outcomes.

SourceUniversity of Washington·JournalThe American Journal of Managed Care·DateFeb 7, 2008

Carnegie Mellon receives $1.85 million

Carnegie Mellon will lead a team to develop and promote a regulatory structure for the safe and economical capture, transport and deep geological sequestration of CO2. The grant is part of a $100 million Climate Change Initiative to reduce greenhouse gas emissions and create a cleaner economy.

World's best analysts compete to win Edelman Prize in operations research and analytics

The Institute for Operations Research and the Management Sciences has announced six finalists competing for the 2008 Franz Edelman Award, recognizing outstanding operations research-based projects that transform companies, industries, and lives. The finalists include teams from Western Europe, federal agencies, and a Fortune 500 company.

Europe's Columbus laboratory leaves Earth

Columbus, a state-of-the-art European research facility, has been successfully deployed to the International Space Station (ISS) via NASA's Space Shuttle Atlantis. The laboratory will enable astronauts to conduct extensive scientific experiments in various fields, including life sciences and space science.

JCI online early table of contents: Feb. 7, 2008

VEGF-B has been shown to inhibit apoptosis in retinal cells and brain cells in mouse models of injury and stroke, suggesting its potential as a new treatment for neurodegenerative diseases. Autophagy is also identified as a virulence-associated trait and survival mechanism for the fungal pathogen Cryptococcus neoformans.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateFeb 7, 2008