Intracellular calcium (Ca2+) is the central regulator of heart contractility. Indeed, it couples the electrical signal, which pervades the myocardium, with cardiomyocytes contraction. Moreover, alterations in calcium management are the main factors contributing to the mechanical and electrical dysfunction observed in failing hearts. So, simultaneous analysis of the contractile function and intracellular Ca2+ is indispensable to evaluate cardiomyocytes activity. Intracellular Ca2+ variations and fraction shortening are commonly studied with fluorescent Ca2+ indicator dyes associated with microscopy techniques. However, tracking and dealing with multiple files manually is timeconsuming and error-prone and often requires expensive apparatus and software. Here, we announce a new, user-friendly image processing and analysis tool, based on ImageJ-Fiji/MATLAB® software, to evaluate the major cardiomyocyte functional parameters. We succeeded in analyzing fractional cell shortening, Ca2+ transient amplitude, and the kinematics/dynamics parameters of mouse isolated adult cardiomyocytes. The proposed method can be applied to evaluate changes in the Ca2+ cycle and contractile behavior in genetically or pharmacologically induced disease models, in drug screening and other common applications to assess mammalian cardiomyocyte functions.

Cell shortening and calcium homeostasis analysis in adult cardiomyocytes via a new software tool / Fassina, Lorenzo; Assenza, MARIA RITA; Miragoli, Michele; Isidori, Andrea M.; Naro, Fabio; Barbagallo, Federica. - In: BIOMEDICINES. - ISSN 2227-9059. - 10:3(2022), pp. 1-12. [10.3390/biomedicines10030640]

Cell shortening and calcium homeostasis analysis in adult cardiomyocytes via a new software tool

Maria Rita Assenza;Andrea M. Isidori;Fabio Naro;Federica Barbagallo
2022

Abstract

Intracellular calcium (Ca2+) is the central regulator of heart contractility. Indeed, it couples the electrical signal, which pervades the myocardium, with cardiomyocytes contraction. Moreover, alterations in calcium management are the main factors contributing to the mechanical and electrical dysfunction observed in failing hearts. So, simultaneous analysis of the contractile function and intracellular Ca2+ is indispensable to evaluate cardiomyocytes activity. Intracellular Ca2+ variations and fraction shortening are commonly studied with fluorescent Ca2+ indicator dyes associated with microscopy techniques. However, tracking and dealing with multiple files manually is timeconsuming and error-prone and often requires expensive apparatus and software. Here, we announce a new, user-friendly image processing and analysis tool, based on ImageJ-Fiji/MATLAB® software, to evaluate the major cardiomyocyte functional parameters. We succeeded in analyzing fractional cell shortening, Ca2+ transient amplitude, and the kinematics/dynamics parameters of mouse isolated adult cardiomyocytes. The proposed method can be applied to evaluate changes in the Ca2+ cycle and contractile behavior in genetically or pharmacologically induced disease models, in drug screening and other common applications to assess mammalian cardiomyocyte functions.
2022
Ca2+ transient; fraction shortening; software; adult ventricular cardiomyocytes; β-adrenergic receptor
01 Pubblicazione su rivista::01a Articolo in rivista
Cell shortening and calcium homeostasis analysis in adult cardiomyocytes via a new software tool / Fassina, Lorenzo; Assenza, MARIA RITA; Miragoli, Michele; Isidori, Andrea M.; Naro, Fabio; Barbagallo, Federica. - In: BIOMEDICINES. - ISSN 2227-9059. - 10:3(2022), pp. 1-12. [10.3390/biomedicines10030640]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1689455
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