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Parasites Ready To Jump
Transposons are mobile genetic elements found in the hereditary material of humans and other organisms. They can replicate and the new copies can insert at novel sites in the genome. Because this threatens the whole organism, molecular mechanisms have evolved which can repress transposon activity. Professor Klaus Förstemann of the Gene Center of Ludwig-Maximilians-Universität (LMU) in Munich and a team of researchers working with the fruitfly Drosophila melanogaster have now uncovered a new type of cellular defence that acts against DNA sequences present in high copy numbers inside the cell, even if they have not integrated into the genome. Small molecules of RNA (a class of nucleic acid closely related to the genetic material DNA) play the central role. "Transposons are genomic parasites, so to speak", says Förstemann. "If they are allowed to proliferate, the genome can become unstable or cancers can develop. We now want to find out whether mammalian cells possess this newly discovered defence mechanism and to elucidate precisely how it works." (EMBO Journal online, 30 July 2009.)
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People Sometimes Seek The Truth, But Most Prefer Like-Minded Views
We swim in a sea of information, but filter out most of what we see or hear. New analysis of data from dozens of studies sheds new light on how we choose what we do and do not hear. The study found that while people tend to avoid information that contradicts what they already think or believe, certain factors can cause them to seek out, or at least consider, other points of view.
News of the day
Antidepressant Does Not Appear To Reduce Repetitive Behaviors In Children With Autism Spectrum Disorders
The antidepressant citalopram does not appear to reduce the occurrence of repetitive behaviors in children and teens with autism spectrum disorders, according to a report in the June issue of Archives of General Psychiatry, one of the JAMA/Archives journals.
Cardiovascular

Electronic Health Records For The U.S. Difficult To Do, But Could Pay Off

"Creating an electronic health record for every American by 2014 is a big part of Obama"s agenda but it may be easier said than done," CNN Money reports. "For one, the cost can be prohibitive - easily running into the tens of millions of dollars. Getting physicians on board can be challenging. And the sheer magnitude of implementing the technology can be overwhelmingly cumbersome - translation: try creating a system for a hospital that serves 600,000 patients." The ambitious idea is to eventually create a network between hospitals and doctors offices all across the nation (Goldman, 7/31). Separately, IBM, a company that provides health IT services, has joined forces with UnitedHealth Group to test a medical home payment and care delivery model in Arizona, the Arizona Republic reports. Under the program, IBM is providing consultants to help doctors install electronic medical records and prescribing capabilities. "Under the UnitedHealth program, doctors... could be paid 15 to 20 percent more than the insurer"s conventional rates. Participating doctors will collect a monthly fee for each patient enrolled in the program to cover the costs of coordinating care," the paper says. The idea is to encourage them to provide a level of care that keeps patients out of the hospital (Alltucker, 7/31). This information was reprinted from kaiserhealthnews.org with kind permission from the Henry J. Kaiser Family Foundation. You can view the entire Kaiser Daily Health Policy Report, search the archives and sign up for email delivery at kaiserhealthnews.org. © Henry J. Kaiser Family Foundation. All rights reserved.


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