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Effects of the cathepsin K inhibitor with mineral trioxide aggregate cements on osteoclastic activity
Restorative Dentistry & Endodontics ; : e17-2019.
Article in English | WPRIM | ID: wpr-741996
ABSTRACT

OBJECTIVES:

Root resorption is an unexpected complication after replantation procedures. Combining anti-osteoclastic medicaments with retrograde root filling materials may avert this resorptive activity. The purpose of this study was to assess effects of a cathepsin K inhibitor with calcium silicate-based cements on osteoclastic activity.

METHODS:

MC3T3-E1 cells were cultured for biocompatibility analyses. RAW 264.7 cells were cultured in the presence of the receptor activator of nuclear factor-kappa B and lipopolysaccharide, followed by treatment with Biodentine (BIOD) or ProRoot MTA with or without medicaments (Odanacatib [ODN], a cathepsin inhibitor and alendronate, a bisphosphonate). After drug treatment, the cell counting kit-8 assay and Alizarin red staining were performed to evaluate biocompatibility in MC3T3-E1 cells. Reverse-transcription polymerase chain reaction, tartrate-resistant acid phosphatase (TRAP) staining and enzyme-linked immunosorbent assays were performed in RAW 264.7 cells to determine the expression levels of inflammatory cytokines, interleukin (IL)-1β, IL-6, tumor necrosis factor-α (TNF-α) and prostaglandin E2 (PGE2). Data were analyzed by one-way analysis of variance and Tukey's post hoc test (p < 0.05).

RESULTS:

Biocompatibility results showed that there were no significant differences among any of the groups. RAW 264.7 cells treated with BIOD and ODN showed the lowest levels of TNF-α and PGE2. Treatments with BIOD + ODN were more potent suppressors of inflammatory cytokine expression (p < 0.05).

CONCLUSION:

The cathepsin K inhibitor with calcium silicate-based cement inhibits osteoclastic activity. This may have clinical application in preventing inflammatory root resorption in replanted teeth.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Osteoblasts / Osteoclasts / Replantation / Root Resorption / Tooth / Acid Phosphatase / Enzyme-Linked Immunosorbent Assay / Dinoprostone / Cathepsins / Cell Count Language: English Journal: Restorative Dentistry & Endodontics Year: 2019 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Osteoblasts / Osteoclasts / Replantation / Root Resorption / Tooth / Acid Phosphatase / Enzyme-Linked Immunosorbent Assay / Dinoprostone / Cathepsins / Cell Count Language: English Journal: Restorative Dentistry & Endodontics Year: 2019 Type: Article