title: Application of bovine pituitary extract and polyglycolide/poly(lactide-co-glycolide) scaffold to the cultivation of bovine knee chondrocytes.
abstract: In vitro cultivation of primary bovine knee chondrocytes (BKCs), using bovine pituitary extract (BPE) and porous scaffolds composed of polyglycolide (PGA) and 85/15 poly(lactide-co-glycolide) (PLGA), was investigated. Here, BPE was prepared from fresh bovine pituitaries, and cylindrical PGA/PLGA scaffolds with various chemical compositions were fabricated by solvent merging/particulate leaching method. Experimental results showed that in microcarrier systems, the rate of BKC growth on PGA surfaces is faster than that on PLGA surfaces, and the decrease in the medium pH value of BKCs-adsorbed PGA particles is faster than that of BKCs-adsorbed PLGA particles. After 28-day construct cultivation, the BKC amount and the content of glycosaminoglycans and collagen per construct increased with BPE protein concentration. For a constant BPE protein concentration, a higher PGA percentage in scaffold leads to a better biological environment for the growth of BKCs and the synthesis of extracellar matrices.
authors.affiliation: Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, Republic of China. chmyck@ccu.edu.tw
authors.forename: Yung-Chih
authors.initials: YC
authors.lastname: Kuo
authors.forename: Chiu-Yen
authors.initials: CY
authors.lastname: Chung
mesh_terms: D000818:Animals; D001672:Biocompatible Materials; D002358:Cartilage, Articular / Q000166:cytology / Q000187:drug effects; D002417:Cattle; D002478:Cells, Cultured; D019902:Chondrocytes / Q000166:cytology*; D007719:Knee Joint; D019344:Lactic Acid; D008422:Materials Testing; D010902:Pituitary Gland / Q000737:chemistry*; D011100:Polyglycolic Acid; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011108:Polymers; D023822:Tissue Engineering / Q000379:methods*; D014020:Tissue Extracts
chemical_list: D001672:Biocompatible Materials; D011108:Polymers; D014020:Tissue Extracts; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid