title: Biocompatibility of MG-63 cells on collagen, poly-L-lactic acid, hydroxyapatite scaffolds with different parameters.
abstract: OBJECTIVE
  In this study, osteoblast-like MG-63 cells were cultured on 3 different scaffold types composed of (a) collagen + poly-L-lactic acid (PLLA), (b) collagen + hydroxyapatite (HA; 30ºC) or (c) collagen + hydroxyapatite (HA; 37ºC) and produced with different porosities.
  
  
  METHODS
  Biomechanical properties of the scaffolds were characterized by tensile strength measurements. Properties of the cell-seeded scaffolds were evaluated with scanning electron microscopy (SEM). Cell adhesion and proliferation capacities were evaluated. Alkaline phosphatase (ALP) levels in media were measured. Transmission electron microscopy (TEM) and histological analyses were used to assess morphological characteristics.
  
  
  RESULTS
  Our results showed that collagen-based PLLA and HA scaffolds have good cell biocompatibility. MTT test showed that the scaffolds exhibited no cytotoxicity. According to the force and displacement data, collagen + HA at 37ºC showed the highest mechanical strength and displacement.
  
  
  CONCLUSIONS
  The results suggest that collagen-based PLLA and HA scaffolds might improve osteoblastic growth in vitro and have biomaterial integration potential in possible therapeutic approaches for future clinical studies.
authors.affiliation: 1 Department of Biomechanics, The Institute of Health Science, Dokuz Eylul University, Izmir - Turkey.
authors.forename: Berivan
authors.initials: B
authors.lastname: Cecen
authors.forename: Didem
authors.initials: D
authors.lastname: Kozaci
authors.forename: Mithat
authors.initials: M
authors.lastname: Yuksel
authors.forename: Diler
authors.initials: D
authors.lastname: Erdemli
authors.forename: Alper
authors.initials: A
authors.lastname: Bagriyanik
authors.forename: Hasan
authors.initials: H
authors.lastname: Havitcioglu
mesh_terms: D045744:Cell Line, Tumor; D003094:Collagen / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D006801:Humans; D019344:Lactic Acid / Q000737:chemistry*; D008422:Materials Testing; D010006:Osteoblasts / Q000166:cytology / Q000378:metabolism*; D011091:Polyesters; D011108:Polymers / Q000737:chemistry*; D054457:Tissue Scaffolds / Q000737:chemistry*
chemical_list: D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide); D003094:Collagen; D017886:Durapatite