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Science News for October 23, 2008


Development puts an end to the evolution of endless forms

Researchers propose a simple model of development that explains patterns in morphology and body plans, attributing sparseness of variety to interactions between multiple genes. The hybrid developmental-phylogenetic model reproduces fossil record patterns, including increasing variation among taxonomic groups and decreasing within.

SourcePLOS·JournalPLOS Computational Biology·DateOct 23, 2008

IT outsourcing could benefit rural hospitals, researchers find

A case study conducted by Penn State researchers found that rural hospitals can benefit financially and operationally by sharing an IT infrastructure with larger hospitals in the same area. The partnership allows smaller hospitals to afford comprehensive IT systems at a lower cost, while also benefiting from shared IT staff and expertise.

SourcePenn State·JournalJournal of the American Medical Informatics Association·DateOct 23, 2008

Major source of radon exposure overlooked at former Ohio uranium-processing plant

Researchers at the University of Cincinnati identified a second, potentially more significant source of radon exposure at a former Ohio uranium-processing plant. Six silos filled with uranium ore in the production area resulted in relatively high levels of radon exposure to 12% of workers, while over half were exposed to low levels.

SourceUniversity of Cincinnati·JournalJournal of Exposure Science & Environmental Epidemiology·DateOct 23, 2008

JHU chemists devise self-assembling 'organic wires'

A team of chemists at Johns Hopkins University has developed water-soluble electronic materials that spontaneously assemble into 'wires' with potential for biomedical applications. The researchers are exploring the use of these materials to guide electrical current and regulate cell-to-cell communication.

SourceJohns Hopkins University·JournalJournal of the American Chemical Society·DateOct 23, 2008

Green practices: When do corporations respond to stakeholders' pressure?

The study found that firms with powerful marketing departments adopted the ISO 14001 Environmental Management System standard in response to customer and competitor pressures. In contrast, firms with powerful legal departments were more likely to adopt government-initiated voluntary programs in response to regulator and NGO pressure.

SourceWiley·JournalStrategic Management Journal·DateOct 23, 2008

Novel marker of colon cancer

Researchers have discovered a novel marker for colon cancer, revealing differentially expressed genes that can help identify diagnostic and therapeutic targets. The study's findings provide new insights into the progression of colon cancer and may lead to improved patient outcomes.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateOct 23, 2008

JCI table of contents: Oct. 23, 2008

Researchers identified a molecular reason why MEK inhibitors are limited in their ability to kill B-RAF mutant tumor cells, suggesting a new antitumor approach. MicroRNA15a modulates the expression of Cdc25A and affects hepatic cystogenesis in a rat model of polycystic kidney disease.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 23, 2008

Tiny juvenile dinosaur fossil sheds light on evolution of plant eaters

A team of scientists has discovered a tiny juvenile Heterodontosaurus fossil, shedding new light on the evolution of plant-eating dinosaurs. The fossil's unusual teeth suggest that these early herbivores may have engaged in occasional omnivory, using their canines as defensive weapons or to supplement their diet with small animals.

SourceUniversity of Chicago Medical Center·JournalJournal of Vertebrate Paleontology·DateOct 23, 2008

Ben-Gurion University of the Negev researchers help find that hypnosis can induce synesthesia

Researchers at Ben-Gurion University of the Negev found that hypnosis can induce synesthetic experiences, challenging the idea that extra connections are needed. The study suggests that people with synesthesia do not have abnormal brain connections, but rather increased 'cross talking' between brain areas.

The risk factors of idiopathic pulmonary fibrosis in HCV patients

A study published in the World Journal of Gastroenterology found that patients with chronic HCV infection have a higher risk of developing idiopathic pulmonary fibrosis compared to those with HBV. The risk factors include age, liver cirrhosis, and smoking, with patients over 55 and those with liver cirrhosis showing the highest incidence.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateOct 23, 2008

Civic education conducive to a more democratic America

Research suggests that civic education can mitigate poorly informed and disengaged American citizens. Eamonn Callan argues for 'rational social hope' in which teachers promote civic virtue through relevant information and understanding.

SourceWiley·JournalYearbook of the National Society for the Study of Education·DateOct 23, 2008

Mouse genes guide search for human anxiety disorder genes

A new genetic association study found associations between six mouse genes and specific human anxiety disorders, including social phobia, generalized anxiety disorder, and panic disorder. The study suggests that these genes may play a role in predisposing individuals to developing an anxiety disorder.

SourceElsevier·JournalBiological Psychiatry·DateOct 23, 2008