Allergy or Tolerance: Reduced Inflammatory Cytokine Response and Concomitant IL-10 Production of Lymphocytes and Monocytes in Symptom-Free Titanium Dental Implant PatientsReport as inadecuate




Allergy or Tolerance: Reduced Inflammatory Cytokine Response and Concomitant IL-10 Production of Lymphocytes and Monocytes in Symptom-Free Titanium Dental Implant Patients - Download this document for free, or read online. Document in PDF available to download.

BioMed Research InternationalVolume 2013 2013, Article ID 539834, 9 pages

Research Article

Department of Dermatology and Allergology, Ludwig-Maximilians-University of Munich, Frauenlobstraße 9-11, 80337 Munich, Germany

Department of Dentistry, Georg-August University of Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany

Dental Surgery, Bahhnhofstraße 20, 87700 Memmingen, Germany

Clinic of Trauma Surgery, University Hospital of Zürich, Rämistr. 100, 8091 Zürich, Switzerland

Received 30 April 2013; Revised 24 July 2013; Accepted 25 July 2013

Academic Editor: Taiyoun Rhim

Copyright © 2013 Peter Thomas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hypersensitivity reactions to titanium Ti are very rare. Thus, we assessed the proinflammatory response and also potential tolerance favoring in vitro reactivity of human blood lymphocytes and monocytes PBMC to Ti in healthy individuals 14 without, 6 with complication-free dental Ti implants. The proliferation index SI in lymphocyte transformation test LTT and production of cytokines linked to innate immune response IL-1β, IL-6, and TNFα or immune regulation IL-10 were assessed in response to TiO2 particles or Ti discs. In both groups, the Ti-LTT reactivity was not enhanced e.g., . The control antigen tetanus toxoid TT gave adequate reactivity median SI individuals without-with implant: - . Individuals without implant showed higher cytokine response to Ti materials than individuals with symptom-free implants; for example, TiO2 rutile particle induced increase of IL-1β 70.27-fold-8.49-fold versus control medium culture. PBMC of 5 of the 6 individuals with complication-free Ti implants showed an ex vivo ongoing production of IL-10 mean  pg-mL-but none of the 14 controls showed such IL-10 production. Thus in vitro IL-1β-, IL-6-, and TNF-α production reflects “normal” unspecific immune response to Ti. This might be reduced by production of tolerogenic IL-10 in individuals with symptom-free Ti dental implants.





Author: Peter Thomas, Gerhard Iglhaut, Andreas Wollenberg, Dieter Cadosch, and Burkhard Summer

Source: https://www.hindawi.com/



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