نوع مقاله : مقاله های پژوهشی
نویسندگان
1 کارشناس ارشد، گروه بیومکانیک، دانشکدهی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران
2 دانشیار، گروه بیومکانیک، دانشکدهی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران
3 دانشیار، گروه خونشناسی، دانشکدهی پزشکی، دانشگاه تربیت مدرس، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Background: Cardiac contracting cells cause heart pumping motion by its contraction and any problem in this motion is related to these cells. In one approach, considering cardiac cell as a homogenous body with linear elastic properties, it can be analytically mechanically modeled. To obtain cell elastic modulus by existing analytical relations, experimental data are needed.Methods: In this study, suitable experimental data were collected from mouse cardiac cells using atomic force microscopy (AFM). Then, by contact mechanics relations for this experimental method, elastic modulus were obtained and analyzed with two methods.Findings: Using two methods, elastic moduli were 48.08 ± 2.26 and 55.67 ± 2.56 kPa. Variations of elastic modulus by indentation depth showed nonlinear elastic properties of these cells.Conclusion: It can be concluded that via both of the presented methods, the same results for elastic modulus value for these contracting cells were obtained approximately. Also, it could be said that the linear Hertz’s model is suitable for initial prediction of the cell mechanical properties and to more exact and general evaluate of these properties, it is better to apply nonlinear models.
کلیدواژهها [English]