Antimicrobial Efficacy of an Innovative Emulsion of Medium Chain Triglycerides against Canine and Feline Periodontopathogens

G. Laverty, B. F. Gilmore, D. S. Jones, L. Coyle, M. Folan, R. Breathnach

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Abstract

OBJECTIVES: To test the in vitro antimicrobial efficacy of a non-toxic emulsion of free fatty acids against clinically relevant canine and feline periodontopathogens 
METHODS: Antimicrobial kill kinetics were established utilising an alamarBlue® viability assay against 10 species of canine and feline periodontopathogens in the biofilm mode of growth at a concentration of 0·125% v/v medium chain triglyceride (ML:8) emulsion. The results were compared with 0·12% v/v chlorhexidine digluconate and a xylitol-containing dental formulation. Mammalian cellular cytotoxicity was also investigated for both the ML:8 emulsion and chlorhexidine digluconate (0·25 to 0·0625% v/v) using in vitro tissue culture techniques.
RESULTS: No statistically significant difference was observed in the antimicrobial activity of the ML:8 emulsion and chlorhexidine digluconate; a high percentage kill rate (>70%) was achieved within 5 minutes of exposure and was maintained at subsequent time points. A statistically significant improvement in antibiofilm activity was observed with the ML:8 emulsion compared with the xylitol-containing formulation. The ML:8 emulsion possessed a significantly lower (P<0·001) toxicity profile compared with the chlorhexidine digluconate in mammalian cellular cytotoxicity assays.
CLINICAL SIGNIFICANCE: The ML:8 emulsion exhibited significant potential as a putative effective antimi-crobial alternative to chlorhexidine- and xylitol- based products for the reduction of canine and feline periodontopathogens.
Original languageEnglish
Pages (from-to)253-263
Number of pages11
JournalJournal of Small Animal Practice
Volume56
Issue number4
Early online date28 Feb 2015
DOIs
Publication statusPublished - Apr 2015

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