Anti-inflammatory effect of new calcium hydroxide paste containing siliconsubstituted hydroxyapatite in lipopolysaccharidestimulated macrophages

노지연; Kim Ki Rim (김기림)

doi:10.13065/jksdh.20180041

Anti-inflammatory effect of new calcium hydroxide paste containing siliconsubstituted hydroxyapatite in lipopolysaccharidestimulated macrophages

Journal of Korean society of Dental Hygiene
Abbr : J Korean Soc Dent Hyg
2018, 18(4), pp.423-432
DOI : 10.13065/jksdh.20180041
Publisher : Korean Society of Dental Hygiene
Research Area : Medicine and Pharmacy > Dentistry

노지연 ¹, Kim Ki Rim ²

¹Research Planning and Coordination Division, National Forensic Service
²경북대학교

Accredited

ABSTRACT

Objectives: Calcium hydroxide, a root canal temporary sealer, has long been used and it has anti-bacterial and anti-inflammatory activity. To investigate the properties of a newly developed calcium hydroxide paste comprising silicon-substituted hydroxyapatite (Si-HA), we examined the anti-inflammatory activity of the new calcium hydroxide paste in RAW 264.7 macrophages stimulated by lipopolysaccharide (LPS), which causes infection of the root canal. Methods: The test materials, including Calcipex II as control group and the newly developed TRC paste, were extracted from cell culture media and then diluted for experiment. In LPS-stimulated RAW 264.7 cells, the cytotoxicity and nitric oxide (NO) production of test materials were measured by MTT assay and Griess reagents, respectively. Also, the expression of the inducible nitric oxide synthase (iNOS) was assessed by western blotting. Results: The IC50 values of Calcipex II and TRC paste were 17.6 ㎎/㎖ and 13.5 ㎎/㎖, respectively. The level of NO, increased by LPS, was dose-dependently inhibited more by TRC paste than Calcipex II treatment. In addition, iNOS expression was decreased by 71% and 92% at concentrations of 2 ㎎/㎖ and 20 ㎎/㎖ of TRC paste, respectively. Conclusions: We demonstrated that the Si-HA calcium hydroxide paste has a slightly improved anti-inflammatory property and further studies are needed before clinical recommendations are proposed.

KEYWORDS

Anti-inflammation, Calcium hydroxide, Lipopolysaccharide, Macrophages, Silicon-substituted hydroxyapatite

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Journal of Korean society of Dental Hygiene 2023 KCI Impact Factor : 0.8

Anti-inflammatory effect of new calcium hydroxide paste containing siliconsubstituted hydroxyapatite in lipopolysaccharidestimulated macrophages

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* References for papers published after 2023 are currently being built.

Journal of Korean society of Dental Hygiene 2023 KCI Impact Factor : 0.8

Anti-inflammatory effect of new calcium hydroxide paste containing siliconsubstituted hydroxyapatite in lipopolysaccharidestimulated macrophages

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