Modification of Ti6AL4V surfaces using collagen I, III, and fibronectin. II. Influence on osteoblast responses.
Responses of osteoblastic cells are influenced by morphology and composition of the extracellular matrix, and this fact has been used to improve the biological acceptance of implants by modifying the surfaces with components of the extracellular matrix (ECM). In this study, the effect of the collagen types I and III on adhesion, proliferation, and differentiation was studied, using primary osteoblastic cells from rat calvariae. Differences in alkaline phosphatase activity (ALP) and collagen synthesis were observed between differently composed collagen coatings. An increase in collagen type III resulted in an increase in collagen synthesis and a concomitant decrease in ALP activity and Ca deposition. Initial adhesion mechanism of the cells depended on the substrate (titanium, collagen, fibronectin).
Bierbaum
Susanne
S
Institute of Materials Science, Dresden University of Technology, Dresden, Germany. Susanne.bierbaum@mailbox.tu-dresden.de
Hempel
Ute
U
Geissler
Ulrike
U
Hanke
Thomas
T
Scharnweber
Dieter
D
Wenzel
Klaus-Wolfgang
KW
Worch
Hartmut
H
D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry; D000818:Animals; D024042:Collagen Type I / Q000737:chemistry*; D024061:Collagen Type III / Q000737:chemistry*; D005353:Fibronectins / Q000737:chemistry*; D010006:Osteoblasts / Q000502:physiology*; D020836:Protein Structure, Quaternary; D051381:Rats; D012886:Skull / Q000502:physiology; D013997:Time Factors; D014025:Titanium / Q000737:chemistry
D000497:Alloys; D024042:Collagen Type I; D024061:Collagen Type III; D005353:Fibronectins; D000535:Aluminum; D014025:Titanium