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- W1999766372 abstract "The aim of this investigation was to determine the effect of growth factor treatment on ovine meniscal chondrocyte (OMC) proliferation in vitro and on the production of matrix proteins by OMCs grown within a polyglycolic acid (PGA) scaffold. Analysis of 72-h monolayer cultures using the mean transit time (MTT) assay revealed a greater increase in OMC numbers in the presence of platelet-derived growth factor (PDGF)-AB, PDGF-BB, insulin-like growth factor (IGF)-I, transforming growth factor-beta1 (TGF-β1) and basic fibroblast growth factor (bFGF) than in untreated controls. In contrast, IGF-II and bone morphogenetic protein-2 had no effect on OMC proliferation at the concentrations tested. The growth factors that elicited the greatest proliferative response (PDGF-AB, PDGF-BB, TGF-β1, and IGF-I) were subsequently tested for their ability to enhance OMC proliferation and differentiation within PGA scaffolds. Biochemical analysis revealed less glycosaminoglycan (GAG) production in the presence of all growth factors tested compared to untreated control samples. In contrast, all of the growth factors increased collagen type I production by OMCs within the scaffolds at day 20, and all except PDGF-BB resulted in an increase at day 39, when compared to appropriate control samples. With the exception of IGF-I, none of the growth factors tested had any significant effect on collagen type II production. Histological staining of sections from OMC–PGA scaffolds did not reveal any difference in GAG or collagen production between the treatment groups. However, immunohistochemical analysis demonstrated an increase in collagen type I expression and a decrease in collagen type II at day 39 in all growth factortreated constructs, concomitant with a high infiltration of cells. This suggests that PDGF-AB, PDGF-BB, TGF-β1, and IGF-1 may be useful in future tissue engineering studies for promoting meniscal cell proliferation and differentiation within scaffolds." @default.
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- W1999766372 date "2007-02-01" @default.
- W1999766372 modified "2023-10-01" @default.
- W1999766372 title "The Effect of Growth Factor Treatment on Meniscal Chondrocyte Proliferation and Differentiation on Polyglycolic Acid Scaffolds" @default.
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- W1999766372 doi "https://doi.org/10.1089/ten.2006.0242" @default.
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