Volume 109, Issue 5 pp. 713-721
Original Article

Antibacterial activity of nitric oxide-releasing carboxymethylcellulose against periodontal pathogens

Evan S. Feura

Evan S. Feura

Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA

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Lei Yang

Lei Yang

Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA

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Mark H. Schoenfisch

Corresponding Author

Mark H. Schoenfisch

Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA

Correspondence

Mark H. Schoenfisch, Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, NC 27599.

Email: [email protected]

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First published: 12 July 2020
Citations: 6

Abstract

The prevalence of periodontal disease poses a significant global health burden. Treatments for these diseases, primarily focused on removal and eradication of dental plaque biofilms, are challenging due to limited access to periodontal pockets where these oral pathogens reside. Herein, we report on the development and characterization of nitric oxide (NO)-releasing carboxymethylcellulose (CMC) derivatives and evaluate their in vitro bactericidal efficacy against planktonic Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans, two prominent periodontopathogens. Bactericidal exposure assays revealed that three of the synthesized NO-releasing polymers were capable of reducing bacterial viability of both species by 99.9% in 2 hr at concentrations of 4 mg ml−1 or lower, reflecting NO's potent and rapid bactericidal action. The NO-releasing CMCs elicited minimal toxicity to human gingival fibroblasts at their bactericidal concentrations following 24-hr exposure.

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