title: Effect of bioaggregate on differentiation of human periodontal ligament fibroblasts.
abstract: OBJECTIVE
  To investigate the cytotoxicity of bioaggregate (BA; Innovative Bioceramix, Vancouver, BC, Canada) to human periodontal ligament (PDL) fibroblasts and its effect on differentiation of human PDL fibroblasts and to compare its performance to that of mineral trioxide aggregate (MTA; Dentsply, Tulsa, OK, USA).
  
  
  METHODS
  Cytotoxicity was assessed by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay on days 1, 2, and 3 after incubation with BA or MTA. The influence of BA and MTA on differentiation of human PDL fibroblasts on days 3, 5, and 7 was evaluated by gene expression of alkaline phosphatase (ALP) and collagen type I (COLI) via quantitative real-time polymerase chain reaction (PCR). The data were analysed by one-way analysis of variance followed by Tukey's test.
  
  
  RESULTS
  Cell numbers in the BA group were similar to that of the control group throughout the culture period, whereas MTA suppressed the proliferation of fibroblasts. ALP expression was significantly increased in the BA group on day 7, whilst it was enhanced by MTA on day 3. Gene expression of COLI was induced by both BA and MTA compared to the control group.
  
  
  CONCLUSIONS
  Bioaggregate was nontoxic to human PDL fibroblasts and appeared to induce the differentiation of human PDL fibroblasts.
authors.affiliation: The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Lab of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
authors.forename: P
authors.initials: P
authors.lastname: Yan
authors.forename: Z
authors.initials: Z
authors.lastname: Yuan
authors.forename: H
authors.initials: H
authors.lastname: Jiang
authors.forename: B
authors.initials: B
authors.lastname: Peng
authors.forename: Z
authors.initials: Z
authors.lastname: Bian
mesh_terms: D000469:Alkaline Phosphatase / Q000187:drug effects / Q000378:metabolism; D017607:Aluminum Compounds / Q000633:toxicity; D000704:Analysis of Variance; D017610:Calcium Compounds / Q000633:toxicity; D002126:Calcium Hydroxide / Q000633:toxicity; D002454:Cell Differentiation / Q000187:drug effects*; D002478:Cells, Cultured; D002516:Ceramics / Q000633:toxicity*; D024042:Collagen Type I / Q000187:drug effects / Q000378:metabolism; D045424:Complex Mixtures; D004338:Drug Combinations; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D006882:Hydroxyapatites / Q000633:toxicity; D053758:Nanoparticles; D010087:Oxides / Q000633:toxicity; D010513:Periodontal Ligament / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D012387:Root Canal Filling Materials / Q000633:toxicity*; D017640:Silicates / Q000633:toxicity; D013997:Time Factors
chemical_list: D017607:Aluminum Compounds; C557009:BioAggregate; D017610:Calcium Compounds; D024042:Collagen Type I; D045424:Complex Mixtures; D004338:Drug Combinations; D006882:Hydroxyapatites; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D000469:Alkaline Phosphatase; D002126:Calcium Hydroxide; C031293:calcium silicate