title: Effects of gel concentration, human fibronectin, and cation supplement on the tissue-engineered cartilage.
abstract: Cultivation of bovine knee chondrocytes (BKCs) in various cationic additives was studied using chitosan-gelatin scaffolds, whose surfaces were modified by human fibronectin (HFN). Here, the genipin-crosslinked scaffolds were fabricated by the freezing/lyophilization method with various concentrations of the precursory gels. The experimental results indicated that a lower freezing temperature led to higher moisture content, porosity, and specific surface area of a scaffold. The higher the precursor concentration, the larger the moisture content of a scaffold. A fast biodegradation of scaffold matrix was generated by a high porosity with BKCs. A higher concentration of HFN coated on scaffold surfaces yielded a faster rate of BKC attachment from the culture medium. The amounts of BKCs, glycosaminoglycans, and collagen over 28-day cultivation increased with the scaffold porosity, the coating concentration of HFN, the seeding density of BKCs, and the calcium concentration in medium.
authors.affiliation: Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, Republic of China.
authors.forename: Yung-Chih
authors.initials: YC
authors.lastname: Kuo
authors.forename: I-Nan
authors.initials: IN
authors.lastname: Ku
mesh_terms: D000818:Animals; D002358:Cartilage, Articular / Q000166:cytology / Q000187:drug effects / Q000254:growth & development*; D002412:Cations; D002417:Cattle; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D019902:Chondrocytes / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D020219:Chondrogenesis / Q000187:drug effects / Q000502:physiology*; D005353:Fibronectins / Q000737:chemistry / Q000494:pharmacology*; D005782:Gels / Q000737:chemistry; D023822:Tissue Engineering / Q000379:methods*
chemical_list: D002412:Cations; D005353:Fibronectins; D005782:Gels