title: [In vitro biocompatibility of novel absorbable hydroxyapatite and AO artificial bone beta-tricalcium phosphate with rhesus bone marrow stromal cells].
abstract: OBJECTIVE
  To study the in vitro biocompatibility of novel hydroxyapatite (HA) and AO artificial bone beta-tricalcium phosphate (beta-TCP) with rhesus bone marrow stromal cells (rBMSCs) .
  
  
  METHODS
  The third passage of rBMSCs were cultured with HA and beta-TCP respectively, with the cells cultured without the materials as the control. The morphology and proliferation of cells were observed by inverted phase-contrast microscope and scanning electron microscope (SEM). MTT assay was used to semiquantitatively evaluate the cell proliferation.
  
  
  RESULTS
  The rBMSC cocultured with HA exhibited good growth as observed under inverted phase-contrast microscope, without significant difference from the cells in the control group. Some small particles were seen pealing off from beta-TCP, and some of the cells died. Under SEM, rBMSCs showed good adhesion to HA with obvious proliferation, but the ratio of adhesive cells was not as high as that in beta-TCP group. MTT assay showed no significant difference in the cell number between HA and the control groups, but the cell number in beta-TCP group was notably less than that of control group.
  
  
  CONCLUSIONS
  Novel HA has good biocompatibility with rBMSCs for bone tissue engineering, and AO artificial bone still needs improvement to serve as scaffold material for BMSCs.
authors.affiliation: Department of Traumatology and Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. wql235@fimmu.com
authors.forename: Qun-li
authors.initials: QL
authors.lastname: Wang
authors.forename: Guo-xian
authors.initials: GX
authors.lastname: Pei
authors.forename: Xian-li
authors.initials: XL
authors.lastname: Zeng
authors.forename: Dan
authors.initials: D
authors.lastname: Jin
authors.forename: Kuan-hai
authors.initials: KH
authors.lastname: Wei
authors.forename: Xiao-xia
authors.initials: XX
authors.lastname: Liu
authors.forename: Shi-zhen
authors.initials: SZ
authors.lastname: Zhong
authors.forename: Yang-jun
authors.initials: YJ
authors.lastname: Ou
mesh_terms: D020341:Absorbable Implants; D000818:Animals; D001672:Biocompatible Materials / Q000494:pharmacology*; D001854:Bone Marrow Cells / Q000166:cytology*; D018786:Bone Substitutes; D002130:Calcium Phosphates / Q000494:pharmacology*; D002478:Cells, Cultured; D006882:Hydroxyapatites / Q000494:pharmacology*; D008253:Macaca mulatta; D008297:Male; D059630:Mesenchymal Stem Cells / Q000166:cytology*
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D002130:Calcium Phosphates; D006882:Hydroxyapatites; C485817:beta-tricalcium phosphate