Abstract
Objectives: The purposes of this study were to localize monocyte chemoattractant protein-1-induced protein-1 (MCPIP-1) and its suppressor mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT-1) in gingival tissues and to profile their protein expression levels in relation to the clinical inflammation, Porphyromonas gingivalis colonization, and interleukin (IL)-8 levels. Materials and methods: Study samples were collected from two independent study populations: (1) Gingival tissues were collected from eight periodontally healthy individuals and eight periodontitis patients to localize MCPIP-1 and MALT-1 immunohistochemically, and (2) forty-one gingival tissue samples with marginal, mild, or moderate to severe inflammation were collected from 20 periodontitis patients to determine MCPIP-1 and MALT-1 levels using immunoblots, P. gingivalis levels with qPCR, P. gingivalis gingipain activities with fluorogenic substrates, and IL-8 levels with multiplex technique. Results: MCPIP-1 was detectable in the epithelium and in connective tissue, being especially prominent around the blood vessel walls in healthy periodontal tissues. MALT-1 was observed at all layers of gingival epithelium and especially around the accumulated inflammatory cells in connective tissue. No difference in gingival tissue MCPIP-1 and MALT-1 levels was observed in relation to the severity of gingival inflammation. MALT-1 levels were elevated (p = 0.023) with the increase in tissue P. gingivalis levels, and there was an association between MALT-1 and IL-8 levels (β = 0.054, p = 0.001). Conclusions: Interactions of MALT-1 levels with gingival tissue P. gingivalis counts and IL-8 levels suggest that activation of MALT-1 can take part in P. gingivalis-regulated host immune responses. Clinical relevance: Pharmacological targeting the crosstalk between immune response and MCPIP-1/MALT-1 may have benefits in periodontal treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 2065-2074 |
| Number of pages | 10 |
| Journal | Clinical Oral Investigations |
| Volume | 27 |
| Issue number | 5 |
| Early online date | 3 Apr 2023 |
| DOIs | |
| Publication status | Published - May 2023 |
Bibliographical note
Funding Information:This study was partly supported by SHS the Finnish Dental Society Apollonia, Helsinki, Finland (U.K.G.), and Minerva Foundation, Helsinki, Finland (U.K.G.). The authors are grateful for the technical assistance of Katja Sampalahti, Oona Hällfors, and Tatjana Peskova from the University of Turku.
Funding Information:
Open Access funding provided by University of Turku (UTU) including Turku University Central Hospital. This study was partly supported by SHS the Finnish Dental Society Apollonia, Helsinki, Finland (U.K.G.), and Minerva Foundation, Helsinki, Finland (U.K.G.).
Publisher Copyright:
© 2023, The Author(s).
Funding
This study was partly supported by SHS the Finnish Dental Society Apollonia, Helsinki, Finland (U.K.G.), and Minerva Foundation, Helsinki, Finland (U.K.G.). The authors are grateful for the technical assistance of Katja Sampalahti, Oona Hällfors, and Tatjana Peskova from the University of Turku. Open Access funding provided by University of Turku (UTU) including Turku University Central Hospital. This study was partly supported by SHS the Finnish Dental Society Apollonia, Helsinki, Finland (U.K.G.), and Minerva Foundation, Helsinki, Finland (U.K.G.).
Keywords
- Interleukin-8
- MALT-1 protein
- MCPIP1 protein, Human/Regnase-1 protein, human
- Porphyromonas gingivalis