Polyethylene particles stimulate expression of ITAM-related molecules in peri-implant tissues and when stimulating osteoclastogenesis in vitro

Ekram Alias, A. S S K Dharmapatni, A. C. Holding, G. J. Atkins, D. M. Findlay, D. W. Howie, T. N. Crotti, D. R. Haynes

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Wear particle-induced orthopaedic prosthesis loosening is associated with elevated osteoclast activity. The immunoreceptor tyrosine-based activation motif (ITAM)-related molecules OSCAR, FcRγ, TREM2 and DAP12 are important for osteoclast formation. The aim of this study was to determine if these molecules are involved in peri-implant loosening by investigating their expression in peri-implant tissues obtained at revision of joint replacement components containing polyethylene (PE) wear particles, and in osteoclasts formed in vitro in the presence of PE particles. The results showed that there was a marked and statistically significant increase in protein levels of the ITAM-related molecules in the revision tissues. The levels of OSCAR, FcRγ, TREM2 and DAP12 mRNA in the revision tissues were also increased. In vitro PE particles stimulated osteoclast resorption in the presence of 50 ng ml -1 receptor activator NFκB (RANKL) and significantly elevated the expression of OSCAR, FcRγ, TREM2 and DAP12 during osteoclast formation. These findings suggest that the ITAM signalling molecules and their co-receptors have a role in pathogenic bone loss associated with implant PE wear.

Original languageEnglish
Pages (from-to)3104-3112
Number of pages9
JournalActa Biomaterialia
Volume8
Issue number8
DOIs
Publication statusPublished - Aug 2012

Fingerprint

Immunoreceptor Tyrosine-Based Activation Motif
Polyethylene
Osteoclasts
Osteogenesis
Tyrosine
Polyethylenes
Chemical activation
Tissue
Molecules
Wear of materials
Replacement Arthroplasties
Prosthesis Failure
Orthopedics
Bone
In Vitro Techniques
Proteins
Bone and Bones
Messenger RNA

Keywords

  • Joint replacement
  • Osteoclast
  • Osteolysis
  • Polyethylene
  • Wear debris

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Biotechnology
  • Biochemistry
  • Molecular Biology

Cite this

Polyethylene particles stimulate expression of ITAM-related molecules in peri-implant tissues and when stimulating osteoclastogenesis in vitro. / Alias, Ekram; Dharmapatni, A. S S K; Holding, A. C.; Atkins, G. J.; Findlay, D. M.; Howie, D. W.; Crotti, T. N.; Haynes, D. R.

In: Acta Biomaterialia, Vol. 8, No. 8, 08.2012, p. 3104-3112.

Research output: Contribution to journalArticle

Alias, Ekram ; Dharmapatni, A. S S K ; Holding, A. C. ; Atkins, G. J. ; Findlay, D. M. ; Howie, D. W. ; Crotti, T. N. ; Haynes, D. R. / Polyethylene particles stimulate expression of ITAM-related molecules in peri-implant tissues and when stimulating osteoclastogenesis in vitro. In: Acta Biomaterialia. 2012 ; Vol. 8, No. 8. pp. 3104-3112.
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