JANČÁŘ, Josef, Alexandra SLOVIKOVA, Evžen AMLER, Petr KRUPA, Helga KECOVÁ, Ladislav PLÁNKA, Petr GÁL a Alois NEČAS. Mechanical response of porous scaffolds for cartilage engineering. Physiological Research. Praha: Inst. of Physiol., Academy of Sciences, 2007, roč. 56, Suppl. 1, s. S17-S25, 9 s. ISSN 0862-8408. |
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@article{773193, author = {Jančář, Josef and Slovikova, Alexandra and Amler, Evžen and Krupa, Petr and Kecová, Helga and Plánka, Ladislav and Gál, Petr and Nečas, Alois}, article_location = {Praha}, article_number = {Suppl. 1}, keywords = {Chitosan; Nanofibers; Hyaluronic acid; Hydroxyapatite; Mesenchymal stem cells; Joint resurfacing}, language = {eng}, issn = {0862-8408}, journal = {Physiological Research}, title = {Mechanical response of porous scaffolds for cartilage engineering}, volume = {56}, year = {2007} }
TY - JOUR ID - 773193 AU - Jančář, Josef - Slovikova, Alexandra - Amler, Evžen - Krupa, Petr - Kecová, Helga - Plánka, Ladislav - Gál, Petr - Nečas, Alois PY - 2007 TI - Mechanical response of porous scaffolds for cartilage engineering JF - Physiological Research VL - 56 IS - Suppl. 1 SP - S17-S25 EP - S17-S25 PB - Inst. of Physiol., Academy of Sciences SN - 08628408 KW - Chitosan KW - Nanofibers KW - Hyaluronic acid KW - Hydroxyapatite KW - Mesenchymal stem cells KW - Joint resurfacing N2 - In this paper, the effect of modification of the cross-linked collagen I with hyaluronic acid, hydroxyapatite nanoparticles and chitosan nanofibers on the mechanical response of the compact scaffold material and the lyophilized porous scaffold construct has been investigated in the dry state at 37 oC under tensile loading. The results showed that the addition of hyaluronic acid reduced the tensile elastic modulus and slightly increased the ultimate deformation of crosslinked collagen I under the test conditions used. On the other hand, addition of hydroxyapatite nanoparticles and chitosan nanofibers, respectively, increased the elastic modulus of the modified collagen ten-fold and four-fold, respectively. The ultimate tensile deformation has been decreased by hydroxyapatite and increased by the chitosan nanofibers. It can be concluded that enhancing the stiffness of the compact scaffold material by adding rigid chitosan nanofibers can improve the resistance of the porous scaffolds against mechanical loading. SEM micrographs revealed the effect of the respective additives on the pore structure of the lyophilized collagen foams. lagen modified with chitosan nanofibers exhibited the most uniform pore structure. Moreover, chitosan nanofibers seemed to enhance mesenchymal cell growth compared to neat collagen I. ER -
JANČÁŘ, Josef, Alexandra SLOVIKOVA, Evžen AMLER, Petr KRUPA, Helga KECOVÁ, Ladislav PLÁNKA, Petr GÁL a Alois NEČAS. Mechanical response of porous scaffolds for cartilage engineering. \textit{Physiological Research}. Praha: Inst. of Physiol., Academy of Sciences, 2007, roč.~56, Suppl. 1, s.~S17-S25, 9 s. ISSN~0862-8408.
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