Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10872404 | FEBS Letters | 2007 | 7 Pages |
Abstract
The effect of interval, direction and rate of strain on mechanotransduction in neonatal rat cardiomyocytes is determined for focal adhesion kinase (Y397pFAK), extracellular signal-regulated kinase ERK1/2 (Thr183/Tyr185) and paxillin (pY31) and phosphorylation time courses to 10% strain assessed. Cells are non-responsive at 5Â min but recover at 15Â min (PÂ <Â 0.03) with FAK nuclear translocation by 30Â min. Cyclic biaxial strain increased phosphorylation from slower to faster rates (PÂ <Â 0.05). Uniaxial strain to groove-aligned myocytes increased FAK and ERK1/2 phosphorylation transversely more than longitudinally (PÂ <Â 0.05). Mechanotransduction may have a refractory period of 5Â min and differentiate directions and rates of strain.
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Authors
Samuel E. Senyo, Yevgeniya E. Koshman, Brenda Russell,