ScienceDaily (Dec. 12, 2008) — A new study shows that atrial fibrillation--the most common form of sustained heart arrhythmia--can be caused in an unexpected way. Researchers report in the December 12th issue of the journal Cell, the first evidence that a rare and particularly severe form of the disease stems from a gene involved in shuttling other molecules in and out of the cell nucleus, where the DNA that serves as the blueprint for life is housed.
