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Science News for March 3, 2005


Surf's up in the solar nebula

Scientists have long puzzled over the origin of chondrules, glassy particles found in meteorites that formed in the solar nebula. New calculations suggest that spiral arms in the disk surrounding Jupiter may have generated shock waves that melted dust clumps to form these particles.

SourceIndiana University·JournalThe Astrophysical Journal Letters·DateMar 3, 2005

Orthodontists must brace against back pain

A new study published in Clinical Biomechanics reveals that orthodontists are at risk of musculoskeletal disorders due to prolonged sitting and repetitive tasks, with males bearing heavier loads than females. The research highlights the need for better work layout and equipment design to mitigate this risk.

SourceUniversity of Alberta·JournalClinical Biomechanics·DateMar 3, 2005

New ways to ease liver disease

Research reveals that IL-6 activates a pathway in liver cells that triggers protection against hepatitis and immune-mediated liver damage. Two proteins, KC and SAA2, play a crucial role in this protective effect.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 3, 2005

A shallow hip socket predicts osteoarthritis of the hip

A long-term study of 835 participants found moderate acetabular dysplasia to be a strong independent risk factor for hip OA. Women with acetabular dysplasia had a higher incidence and severity of hip OA, especially those with high-stress workloads and low BMI.

SourceWiley·JournalArthritis & Rheumatism·DateMar 3, 2005

Important discovery about second most fatal cancer

A new syndrome of colorectal cancer has been identified, characterized by frequent mutations in the BRAF oncogene and DNA methylation. This inherited form of cancer often develops in previously harmless polyps and can occur in young individuals, emphasizing the importance of early detection and prevention.

SourceMcGill University·JournalClinical Gastroenterology and Hepatology·DateMar 3, 2005

JCI table of contents April 1, 2005

Researchers identify new therapeutic targets for immune-mediated liver diseases and explore the role of IL-6 in protecting liver cells. Osteopontin is also found to play a central role in amplifying rheumatoid arthritis, suggesting potential new treatments for this inflammatory condition.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 3, 2005