Bisphosphonates in bone cement inhibit PMMA particle induced bone resorption
| Autor: | Afsie Sabokbar, David W. Murray, Y Fujikawa, N A Athanasou |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
musculoskeletal diseases
Osteolysis medicine.medical_treatment Immunology Cell Culture Techniques Osteoclasts Dentistry Bone and Bones General Biochemistry Genetics and Molecular Biology Bone resorption Extended Reports Immunoenzyme Techniques Mice Rheumatology Osteoclast Animals Humans Polymethyl Methacrylate Immunology and Allergy Medicine Bone Resorption Tartrate-resistant acid phosphatase Dose-Response Relationship Drug business.industry Bone Cements technology industry and agriculture Cell Differentiation Etidronic Acid Bisphosphonate Etidronic acid equipment and supplies medicine.disease Bone cement Rats Resorption body regions medicine.anatomical_structure Microscopy Electron Scanning Biophysics Female business medicine.drug |
| Popis: | OBJECTIVE—Wear particle induced bone resorption is thought to be one of the mechanisms that contribute to implant loosening. It has previously been shown that macrophages, in response to polymethylmethacrylate (PMMA) particles, differentiate into bone resorbing osteoclasts, and that this process is inhibited by a bisphosphonate, etidronate (EHDP). The aim of this study was to determine whether incorporating EHDP in bone cement could reduce PMMA associated bone resorption. METHODS—Two concentrations of EHDP were mixed with PMMA monomer before polymerisation. Particles of PMMA (1-10 µm) were generated then added to mouse monocytes cocultured with UMR106 rat osteoblast-like cells and the extent of osteoclast differentiation was determined by assessing the extent of tartrate resistant acid phosphatase (TRAP) staining and measuring the amount of lacunar bone resorption. RESULTS—The addition of PMMA to monocyte-UMR106 cocultures resulted in a marked increase in the number of TRAP positive osteoclast-like cells and a significant increase in the number of lacunar resorption pits compared with control cultures to which no particles had been added. After the addition of particles of PMMA + 20 mg EHDP, significantly fewer lacunar pits (p=0.00006) and fewer TRAP positive cells were noted compared with cocultures containing PMMA particles alone. CONCLUSIONS—These results indicate that by mixing a bisphosphonate with bone cement, it is possible to inhibit PMMA particle induced bone resorption. This bisphosphonate inhibition of PMMA biomaterial wear particle containing macrophage-osteoclast differentiation and bone resorption may provide a possible therapeutic strategy to prevent or to control the osteolysis of aseptic loosening. Keywords: bisphosphonate; bone resorption; aseptic loosening; macrophages |
| Databáze: | OpenAIRE |
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