PMID- 30776982 OWN - NLM STAT- MEDLINE DCOM- 20200424 LR - 20200424 IS - 1568-5624 (Electronic) IS - 0920-5063 (Linking) VI - 30 IP - 6 DP - 2019 Apr TI - Tissue response to porous high density polyethylene as a three-dimensional scaffold for bone tissue engineering: An experimental study. PG - 486-499 LID - 10.1080/09205063.2019.1582278 [doi] AB - High density polyethylene (HDPE) is a synthetic biomaterial used as a three-dimensional scaffold for bone defect reconstruction. Reports differ with regard to its biological response, particularly its osteoconductive capacity. The aim of the present work was to histologically and histomorphometrically evaluate tissue response to porous HDPE. An in vivo study was conducted in rat tibia to evaluate osteogenic capacity, angiogenesis, inflammatory response, and the presence of multinucleated giant cells 14 and 60 days post-biomaterial implantation. Histological examination 14 days post-implantation showed fibrovascular tissue inside pores and on the surface of porous HDPE, acute inflammatory response, scant multinucleated giant cells (MNGCs), and lamellar bone in contact with the biomaterial. An increase in the proportion of lamellar bone tissue, no inflammatory response, and a decrease in the number of MNGCs were observed at 60 days. The histomorphometric study showed a significant time-dependent increase both in the area of bone tissue formed in contact with the porous HDPE (14d: 24.450 +/- 11.623 microm(2) vs. 60d: 77.104 +/- 26.217 microm(2), p < 0.05) and in the percentage of bone tissue in contact with the porous HDPE (osseointegration). A significant decrease in the number of MNGCs was also observed at 60 days post-implantation. Porous HDPE showed adequate osteoconductive properties, and only caused an initial inflammatory response. Although this biomaterial has traditionally been used juxtaosseoulsy, its adequate osteoconductive properties broaden the scope of its application to include intraosseous placement. FAU - Martinez Rodriguez, Juliana AU - Martinez Rodriguez J AD - a Universidad de Buenos Aires, Catedra de Anatomia Patologica, Facultad de Odontologia , Buenos Aires , Argentina. FAU - Renou, Sandra J AU - Renou SJ AD - a Universidad de Buenos Aires, Catedra de Anatomia Patologica, Facultad de Odontologia , Buenos Aires , Argentina. FAU - Guglielmotti, Maria B AU - Guglielmotti MB AD - a Universidad de Buenos Aires, Catedra de Anatomia Patologica, Facultad de Odontologia , Buenos Aires , Argentina. AD - b National Research Council (CONICET) , Buenos Aires , Argentina. FAU - Olmedo, Daniel G AU - Olmedo DG AD - a Universidad de Buenos Aires, Catedra de Anatomia Patologica, Facultad de Odontologia , Buenos Aires , Argentina. AD - b National Research Council (CONICET) , Buenos Aires , Argentina. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190308 PL - England TA - J Biomater Sci Polym Ed JT - Journal of biomaterials science. Polymer edition JID - 9007393 RN - 0 (Biocompatible Materials) RN - 9002-88-4 (Polyethylene) SB - IM MH - Animals MH - Biocompatible Materials/*chemistry/*pharmacology MH - Male MH - Polyethylene/*chemistry/*pharmacology MH - Porosity MH - Rats MH - Tibia/cytology/*drug effects MH - *Tissue Engineering MH - Tissue Scaffolds/*chemistry OTO - NOTNLM OT - Porous high density polyethylene OT - biomaterials OT - bone regeneration OT - osteogenesis OT - three-dimensional scaffolds EDAT- 2019/02/20 06:00 MHDA- 2020/04/25 06:00 CRDT- 2019/02/20 06:00 PHST- 2019/02/20 06:00 [pubmed] PHST- 2020/04/25 06:00 [medline] PHST- 2019/02/20 06:00 [entrez] AID - 10.1080/09205063.2019.1582278 [doi] PST - ppublish SO - J Biomater Sci Polym Ed. 2019 Apr;30(6):486-499. doi: 10.1080/09205063.2019.1582278. Epub 2019 Mar 8.