Tannic acid-stabilized pericardium tissue: IR spectroscopy, atomic force microscopy, and dielectric spectroscopy investigations

Journal of Biomedical Materials Research. Part a
Maria JastrzebskaBeata Cwalina

Abstract

Infrared (IR) spectroscopy, atomic force microscopy (AFM), and dielectric spectroscopy methods were employed to study structural and dynamic changes in the tannic acid (TA)-stabilized pericardium tissue. Chemically stabilized pericardium tissue is widely used in construction of the tissue derived bioprostheses. IR spectra recorded in the range 400-4000 cm-1 allowed us to recognize different types of TA-collagen interactions. Formation of hydrogen bonds between amine as well as amide NH groups from collagen and hydroxyl groups of TA was analyzed. The AFM imaging showed that the stabilization procedure with TA introduces considerable changes in both surface topography and thickness of collagen fibrils as well as in fibril arrangement on the tissue surface. It was found, that these structural changes have an impact on the dielectric behavior of the TA-stabilized tissue. The dielectric spectra for the native and TA-stabilized tissues were measured in the frequency and temperature ranges of 10(-1) -10(7) Hz and 120-270 K, respectively. The dielectric spectra revealed the relaxation process due to orientation of bound water supplemented by the fluctuation of collagen polar side groups. At the temperatures above approximately 210 K, t...Continue Reading

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Citations

Mar 8, 2005·The European Physical Journal. E, Soft Matter·M JastrzebskaB Cwalina
Jan 20, 2011·Journal of Biomaterials Science. Polymer Edition·Cheryl A P Cass, Karen J L Burg
Sep 22, 2009·Journal of Dental Research·A K B Bedran-RussoD H Pashley
Mar 26, 2013·Journal of Endodontics·Meng DengXin Xu
Dec 21, 2012·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Venkatachalam NatarajanPraveen Kumar Sehgal
Feb 23, 2020·Biotechnology Journal·Ekaterina A GrebenikPeter S Timashev
Sep 4, 2009·Physical Chemistry Chemical Physics : PCCP·Scott Cowen, Hind A Al-Abadleh
Jul 6, 2021·TheScientificWorldJournal·Mackeler Ramos PolassiPaulo Henrique Perlatti D'Alpino

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