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Establishment of a Murine Pulp Exposure Model with a Novel Mouth-Gag for Pulpitis Research

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Osteocalcin expression in pulp inflammation.

Ashraf Abd-Elmeguid¹, Marwa Abdeldayem, Loren W Kline

¹School of Dentistry, University of Alberta, Edmonton, Alberta, Canada.

Journal of Endodontics

|June 25, 2013

Summary

This summary is machine-generated.

Osteocalcin (OCN) is present in inflamed dental pulp, with higher levels in reversible pulpitis. This suggests OCN may play a role in pulp repair and regeneration, potentially aiding new treatment strategies.

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Published on: July 8, 2021

Area of Science:

Dental Pulp Biology
Inflammation and Repair
Biomarker Discovery

Background:

Osteocalcin (OCN), a dentin matrix glycoprotein produced by odontoblasts, is recognized for its role in dental pulp repair.
The involvement of OCN in pulpal inflammation, however, remains unclear.
Understanding OCN's role is crucial for developing novel therapeutic approaches for dental pulp conditions.

Purpose of the Study:

To investigate the localization of Osteocalcin (OCN) in dental pulp tissues exhibiting reversible and irreversible pulpitis.
To elucidate the potential function of OCN within the context of pulpal inflammation.
To correlate OCN expression with specific inflammatory mediators.

Main Methods:

Pulp tissue samples from reversible pulpitis, irreversible pulpitis, and healthy impacted teeth were collected.
Immunohistochemistry was employed to determine the spatial distribution of OCN.
Multiplex assays were utilized to quantify OCN and a panel of inflammatory mediators.

Main Results:

OCN was detected in cells and matrix near calcification and blood vessels in inflamed pulp, but not in healthy tissue.
OCN expression was significantly higher in reversible pulpitis than in irreversible pulpitis and control tissues.
OCN levels in reversible pulpitis showed positive correlations with angiogenic markers (VEGF, FGF) and certain inflammatory cytokines (IL-17), and negative correlations with others (IL-1α, IL-1β).

Conclusions:

Osteocalcin (OCN) expression is upregulated in inflamed dental pulp, particularly in reversible pulpitis.
The association of OCN with angiogenic markers suggests a potential role in promoting vascularization.
These findings highlight OCN's potential as a target for regenerative therapies in dental pulp treatment.