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Detection of gingival crevicular fluid MMP-8 levels with different laboratory and chair-side methods

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2010
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Sorsa, Timo
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Detection of gingival crevicular fluid MMP-8 levels with different laboratory and chair-side methods
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  • Sorsa, Timo;
  • Hernández Ríos, Emma;
  • Leppilahti, Jussi;
  • Munjal, S.;
  • Netuschil, L.;
  • Mäntylä, Päivi;
Abstract
OBJECTIVE: The aim of the study was to compare four methods for gingival crevicular fluid (GCF) matrix metalloproteinase (MMP)-8 detection. METHODS: Matrix metalloproteinase-8 levels from 20 GCF samples from two periodontally healthy subjects, 18 samples from two patients with gingivitis and 45 samples from six patients with moderate to severe periodontitis, altogether 83 samples, were analysed using (1) a timeresolved immunofluorometric assay (IFMA), (2) an MMP- 8 specific chair-side dip-stick test, (3) a dentoAnalyzer device and (4) the Amersham ELISA kit. Western immunoblot using same monoclonal anti-MMP-8 as in IFMA and dentoAnalyzer was used to identify molecular forms of MMP-8 in GCFs. RESULTS: Correlation between IFMA and dentoAnalyzer results calculated with Spearman’s correlation coefficient was 0.95 (P = 0.01). The chair-side dip-stick test results were well in line with these assays. Periodontitis sites with unstable characteristics were differentiated with these methods. The Amersham ELISA results were not in line with the findings by other methods. CONCLUSIONS: Immunofluorometric assay and dento- Analyzer can detect MMP-8 from GCF samples and these methods are comparable. Using Western immunoblot, it was confirmed that IFMA and dentoAnalyzer can detect activated 55 kDa MMP-8 species especially in periodontitis-affected GCF. dentoAnalyzer is among the first quantitative MMP-8 chair-side testing devices in periodontal and peri-implant diagnostics and research
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This study has been supported by grants from the Academy of Finland, Helsinki University Central Hospital Research Foundation, Finnish Dental Society Apollonia, and DI 06 ⁄ 05-2 from University of Chile.
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URI: https://repositorio.uchile.cl/handle/2250/123367
DOI: doi:10.1111/j.1601-0825.2009.01603.x
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Oral Diseases (2010) 16, 39–45
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