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Science News Archive September 2006 - Page 4


Page 4 of 15

Is Clostridium difficile-associated disease linked to use of common stomach medication?

A recent study found a possible link between the use of proton pump inhibitors and an increased risk of community-acquired Clostridium difficile-associated disease. The research, published in the Canadian Medical Association Journal, suggests that patients who have been prescribed these medications may be more likely to develop CDAD.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateSep 25, 2006

Laser probe of a brain pigment's anatomy may offer insight into Parkinson's disease

A team of researchers used a sophisticated laser system to gain evidence that neuromelanin, a dark brown pigment accumulating in brains, consists of layers of two other pigments: eumelanin and pheomelanin. This structural arrangement may play a critical role in the neurodegenerative cascade behind Parkinson's disease.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateSep 25, 2006

Dinosaurs' climate shifted too, reports show

Researchers from Indiana University and Royal Netherlands Institute for Sea Research found evidence of dramatic climate changes during the Mesozoic Era, with temperature variations ranging from 30 deg C to 36 deg C. The discovery suggests that global fluctuations in carbon cycling played a significant role in shaping ancient climates.

SourceIndiana University·JournalGeology·DateSep 23, 2006

St. Jude finds clues to hearing loss from chemotherapy

Researchers at St. Jude Children's Research Hospital have identified 17 families of mice with genetic mutations that cause hearing loss, similar to damage caused by chemotherapy and age-related hearing loss in adults. The mouse models will help scientists understand the genes responsible for this damage and potentially develop treatments.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateSep 22, 2006

Ancient birds flew on all-fours

A new research by University of Calgary paleontologist Nick Longrich challenges the traditional idea that birds began flying by taking off from the ground. Instead, it suggests that the earliest known ancestor of modern-day birds took to the skies using primitive feathered wings on their arms and legs.

SourceUniversity of Calgary·JournalPaleobiology·DateSep 22, 2006

Household levels of mold following Hurricane Katrina surpass some agricultural environments

A study by Columbia University's Mailman School of Public Health found that household levels of mold and bacterial endotoxins in post-Katrina homes were comparable to those in wastewater treatment plants and agricultural environments. The researchers strongly recommend wearing respirators for cleaning and repairing flood-damaged homes.

SourceColumbia University's Mailman School of Public Health·JournalEnvironmental Health Perspectives·DateSep 22, 2006

Pregnant prehistoric fossil offers clues to past

Scientists have named a new species of ancient marine reptile, Maiaspondylus lindoei, and discovered pregnant embryos in its fossil, marking the most recent record of a live birth in an ichthyosaur. The findings provide valuable insights into the evolution and extinction of these aquatic animals.

SourceUniversity of Alberta·JournalPalaeontology·DateSep 21, 2006