Qualité de l'eau des zones d'activité nautique : influence sur la flore de l'écosystème buccal sur une population de surfeurs

Abstract : Oral cavity can be both a gateaway and a reservoir for pathogenic micro-organisms. Environment is a pathogenic micro-organisms transmission route. Water pollution is associated with different systemic diseases and with antibiotic resistant bacterias. Surfers represent a hight-risk population. Material and methods: Collection of saliva and tongue coating samples has been carried out on 15 surfers and 15 controls. After agar-based cultures, bacteria colonies were isolated and identified using biochemical and molecular methods. Antibiograms were performed for Staphylococcus. Results: There is no significant difference on Streptococcus salivarius quantity between surfers and controls. Streptococcus mutans has not been identified among the isolated colonies. Different enteric bacterias were found in surfer samples, but no Escherichia coli. Staphylococcus were found on 7 surfers and 12 controls. Staphylococcus carried out by surfers are more likely to resist to antibiotics (75% of surfers Staphylococcus resist to amoxicillin, compared to 0% of Staphylococcus from the control group). Conclusion: Recreational water exposure does not appear to affect the bacterias associated with oral health but might be a source of micro-organisms and notably a source of antibiotic resistant bacterias.
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Marie Lavaud. Qualité de l'eau des zones d'activité nautique : influence sur la flore de l'écosystème buccal sur une population de surfeurs. Sciences du Vivant [q-bio]. 2019. ⟨dumas-02143394⟩

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