An AFM study on mechanical properties of native and dimethyl suberimidate cross-linked pericardium tissue
Corresponding Author
K. Matyka
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland.Search for more papers by this authorM. Matyka
Institute of Theoretical Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Search for more papers by this authorI. Mróz
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Search for more papers by this authorJ. Zalewska-Rejdak
Department of Biophysics, Faculty of Pharmacy, Medical University of Silesia, ul. Ostrogórska 30, 41-200 Sosnowiec, Poland
Search for more papers by this authorA. Ciszewski
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Search for more papers by this authorCorresponding Author
K. Matyka
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland.Search for more papers by this authorM. Matyka
Institute of Theoretical Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Search for more papers by this authorI. Mróz
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Search for more papers by this authorJ. Zalewska-Rejdak
Department of Biophysics, Faculty of Pharmacy, Medical University of Silesia, ul. Ostrogórska 30, 41-200 Sosnowiec, Poland
Search for more papers by this authorA. Ciszewski
Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
Search for more papers by this authorAbstract
Changes in the stiffness of hog pericardium tissue, native and treated with dimethyl suberimidate (DMS), are investigated by atomic force microscopy (AFM). Young's modulus is calculated on the basis of the Hertz–Sneddon model. The cross-linking process increases the stiffness of the tissue. The values of Young's modulus are higher for the DMS stabilized pericardium than for the native one. We also observe that the Young's modulus of native tissue increases when the time between getting the biological material and performing the measurements is longer. This process is probably connected with natural degradation of the biological samples. Copyright © 2007 John Wiley & Sons, Ltd.
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