The authors of two Journal of Biological Chemistry (JBC) studies of the molecular underpinnings of hearts whose rhythms have gone awry have retracted the papers, for reasons that are not completely clear.
The two papers are “MicroRNA miR-133 represses HERG K+ channel expression contributing to QT prolongation in diabetic hearts,” published in 2007, and “Down-regulation of miR-1/miR-133 contributes to re-expression of pacemaker channel genes HCN2 and HCN4 in hypertrophic heart,” published in 2008.
This being the JBC, the retraction notices in the August 12, 2011 issue say nothing: Continue reading Authors retract two JBC papers on how heart rhythms go awry; Montreal Heart Institute looking into why