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Doctoral Thesis
Author of thesis: Ing. Lenka Kovářová, Ph.D.
Acad. year: 2020/2021
Supervisor: prof. Ing. Miloslav Pekař, CSc.
Reviewers: doc. Mgr. Lukáš Kubala, Ph.D. , Mgr. Vladimír Prokš, Ph.D.
The thesis is focused on material development based on hyaluronic acid usable in regenerative medicine, especially for heart tissue regeneration after myocardial infarction. The object of the study is the oxidized form of hyaluronic acid (HA-Ox) and hydroxyphenyl derivative of HA (HA-TA). HA-Ox can be crosslinked with a bifunctional alkoxyamine POA and HA-TA undergoes an enzymatic reaction in the presence of hydrogen peroxide catalysed by horseradish peroxidase leading to gel formation. To describe the materials, chemical and physical properties, gelation kinetics and conditions of crosslinking reactions were studied. Hydrogels were characterized by mechanical and viscoelastic properties, degradability or stability in simulated body fluids. These hydrogels serve as scaffolds for the selected cell type. To promote cell adhesion and viability, an RGD sequence has been bonded to the structure of HA-TA. This resulting material is also compatible with selected applicators. Its viscosity and extrusion force are low enough to allow application with a catheter with a very small internal diameter. The applicability of the material through the supply tube to the hydrogel reservoir of the second SPREADS device showed good homogeneity, cell distribution and viability. Finally, the material was applied in vivo using these devices during a preclinical study.
Hydrogel, hyaluronan, gelation, rheology, myocardial infarction, heart regeneration, stem cells
Date of defence
16.09.2020
Result of the defence
Defended (thesis was successfully defended)
Process of defence
Předseda komise představil doktorandku a předal jí slovo. Ing. Kovářová má od roku 2013 praktické zkušenosti ze společnosti Contipro, kde pracovala na různých pozicích. Doktorandka má bohatou publikační činnost, v případě řady publikací je první autorkou.
Language of thesis
Czech
Faculty
Fakulta chemická
Department
Institute of Physical and Applied Chemistry
Study programme
Physical Chemistry (DKCP_FCH_4)
Field of study
Physical Chemistry (DKCPO_FCH_4)
Supervisor’s reportprof. Ing. Miloslav Pekař, CSc.
Reviewer’s reportdoc. Mgr. Lukáš Kubala, Ph.D.
Reviewer’s reportMgr. Vladimír Prokš, Ph.D.
Responsibility: Mgr. et Mgr. Hana Odstrčilová