Abstract

Polyols are effective against caries-causing streptococci but the effect on oropharynx-derived pyogenic streptococci is not well characterised. We aimed to study the effect of erythritol (ERY) and xylitol (XYL) against Streptococcus pyogenes isolated from peritonsillar abscesses (PTA). We used 31 clinical isolates and 5 throat culture collection strains. Inhibition of bacterial growth by polyols at 2.5%, 5% and 10% concentrations was studied and the results were scored. Amylase levels in PTA pus were compared to polyol effectivity scores (PES). Growth curves of four S. pyogenes isolates were analysed. Our study showed that XYL was more effective than ERY inhibiting 71–97% and 48–84% of isolates, respectively, depending of concentrations. 48% of clinical and all throat strains were inhibited by polyols in all concentrations (PES 3). PES was negative or zero in 26% of the isolates in the presence of ERY and in 19% of XYL. ERY enhanced the growth of S. pyogenes isolated from pus with high amylase levels. Polyols in all concentrations inhibited the growth in exponential phase. In conclusion, ERY and XYL are potent growth inhibitors of S. pyogenes isolated from PTA. Therefore, ERY and XYL may have potential in preventing PTA in the patients with frequent tonsillitis episodes.

Details

Title
Effect of erythritol and xylitol on Streptococcus pyogenes causing peritonsillar abscesses
Author
Kõljalg Siiri 1 ; Vaikjärv Risto 2 ; Smidt Imbi 3 ; Rööp Tiiu 1 ; Chakrabarti Anirikh 4 ; Kasenõmm Priit 5 ; Reet, Mändar 3 

 University of Tartu, Department of Microbiology, Institute of Biomedicine and Translational Medicine, Tartu, Estonia (GRID:grid.10939.32) (ISNI:0000 0001 0943 7661) 
 University of Tartu, Department of Oto-Rhino-Laryngology, Institute of Clinical Medicine, Tartu, Estonia (GRID:grid.10939.32) (ISNI:0000 0001 0943 7661); Ear-Nose-Throat Clinic, Tallinn, Estonia (GRID:grid.10939.32) 
 University of Tartu, Department of Microbiology, Institute of Biomedicine and Translational Medicine, Tartu, Estonia (GRID:grid.10939.32) (ISNI:0000 0001 0943 7661); Competence Centre on Health Technologies, Tartu, Estonia (GRID:grid.487355.8) 
 Cargill R&D Centre Europe BVBA, Vilvoorde, Belgium (GRID:grid.498107.3) (ISNI:0000 0004 0412 1766) 
 University of Tartu, Department of Oto-Rhino-Laryngology, Institute of Clinical Medicine, Tartu, Estonia (GRID:grid.10939.32) (ISNI:0000 0001 0943 7661) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2557914234
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.