SarcOptiM for ImageJ: high-frequency online sarcomere length computing on stimulated cardiomyocytes
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چکیده
منابع مشابه
SarcOptiM for ImageJ: high-frequency online sarcomere length computing on stimulated cardiomyocytes.
Accurate measurement of cardiomyocyte contraction is a critical issue for scientists working on cardiac physiology and physiopathology of diseases implying contraction impairment. Cardiomyocytes contraction can be quantified by measuring sarcomere length, but few tools are available for this, and none is freely distributed. We developed a plug-in (SarcOptiM) for the ImageJ/Fiji image analysis p...
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Nanometry is widely used in biological sciences to analyze the movement of molecules or molecular assemblies in cells and in vivo. In cardiac muscle, a change in sarcomere length (SL) by a mere ∼100 nm causes a substantial change in contractility, indicating the need for the simultaneous measurement of SL and intracellular Ca(2+) concentration ([Ca(2+)]i) in cardiomyocytes at high spatial and t...
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Sarcomere length (SL) is an important determinant and indicator of cardiac mechanical function; however, techniques for measuring SL in living, intact tissue are limited. Here, we present a technique that uses two-photon microscopy to directly image striations of living cells in cardioplegic conditions, both in situ (Langendorff-perfused rat hearts and ventricular tissue slices, stained with th...
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OBJECTIVE We investigated whether the Frank-Starling mechanism is absent or preserved in end-stage failing human myocardium and if phosphorylation of contractile proteins modulates its magnitude through the sarcomere length-dependence of calcium sensitivity of isometric force development. METHODS The effect of phosphorylation of troponin I and C-protein by the catalytic subunit of protein kin...
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ژورنال
عنوان ژورنال: American Journal of Physiology-Cell Physiology
سال: 2016
ISSN: 0363-6143,1522-1563
DOI: 10.1152/ajpcell.00094.2016