Paper Chase is a research database designed to offer abstracts of research articles published in journals that have a highly rated impact factor as determined by ISI Impact Factor and PageRank. Abstracts are organized by date, with the most recently published papers listed first. 

Paper Chase

Intravital imaging of cardiac function at the single-cell level.

Proc. Natl. Acad. Sci. U.S.A.. Aug 5, 2014;111(31):11257-62.
Aguirre AD, Vinegoni C, Sebas M, Weissleder R.

Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114;Department of Systems Biology, Harvard Medical School, Boston, MA 02115


Knowledge of cardiomyocyte biology is limited by the lack of methods to interrogate single-cell physiology in vivo. Here we show that contracting myocytes can indeed be imaged with optical microscopy at high temporal and spatial resolution in the beating murine heart, allowing visualization of individual sarcomeres and measurement of the single cardiomyocyte contractile cycle. Collectively, this has been enabled by efficient tissue stabilization, a prospective real-time cardiac gating approach, an image processing algorithm for motion-artifact-free imaging throughout the cardiac cycle, and a fluorescent membrane staining protocol. Quantification of cardiomyocyte contractile function in vivo opens many possibilities for investigating myocardial disease and therapeutic intervention at the cellular level.