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. 2022 Feb;24(1):104879.
doi: 10.1016/j.micinf.2021.104879. Epub 2021 Aug 25.

Secondary Staphylococcus aureus intramammary colonization is reduced by non-aureus staphylococci exoproducts

Eric Brouillette  1 , Coralie Goetz  2 , Daniela Droppa-Almeida  1 , Suzanne Chamberland  3 , Mario Jacques  2 , François Malouin  4
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Free article

Secondary Staphylococcus aureus intramammary colonization is reduced by non-aureus staphylococci exoproducts

Eric Brouillette et al. Microbes Infect. 2022 Feb.
Free article

Abstract

Non-aureus staphylococci (NAS) and Staphylococcus aureus are pathogens that cause bovine mastitis, a costly disease for dairy farmers, however; many NAS are considered part of the normal udder microbiota. It has been suggested that through a mechanism that remains to be elucidated, NAS intramammary colonization can prevent subsequent infection with other bacterial pathogens. This study shows that in a murine mastitis model, secondary Staph. aureus intramammary colonization is reduced by exoproducts from Staph. chromogenes and Staph. simulans, both NAS, while Streptococcus spp. exoproducts have much less ability to affect the course of the infection caused by S. aureus.

Keywords: CNS; Mastitis; NAS; Non-aureus staphylococci; Staphylococcus aureus.

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Conflict of interest statement

Declaration of competing interest The authors declare no conflict of interest. The funding agencies had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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