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Since<jats:italic>Staphylococcus aureus<\/jats:italic>nasopharynx carriage is a known risk factor for PD infections and the oral cavity is a starting point for systemic diseases development, we aimed at comparing the oral staphylococci colonization between PD patients and controls and studying the association with PD-related infections. Saliva samples were plated in Mannitol salt, and isolates were identified by<jats:italic>DnaJ<\/jats:italic>gene sequencing. Staphylococci PD-related infections were recorded throughout the 4-year period following sample collection.<jats:italic>Staphylococcus<\/jats:italic>colonization was present in &gt;90% of the samples from both groups (a total of nine species identified). PD patients presented less diversity and less prevalence of multispecies<jats:italic>Staphylococcus<\/jats:italic>colonization. Although all patients presenting<jats:italic>Staphylococcus epidermidis<\/jats:italic>PD-related infections were also colonized in the oral cavity by the same agent<jats:italic>,<\/jats:italic>only 1 out of 7 patients with ESI caused by<jats:italic>S<\/jats:italic>.<jats:italic>aureus<\/jats:italic>presented<jats:italic>S. aureus<\/jats:italic>oral colonization. Staphylococci are highly prevalent in the oral cavity of both groups, although PD patients presented less species diversity. The association between oral<jats:italic>Staphylococcus<\/jats:italic>carriage and PD-related infections was present for<jats:italic>S. epidermidis<\/jats:italic>but was almost inexistent for<jats:italic>S. aureus<\/jats:italic>, so, further studies are still necessary to evaluate the infectious potential of oral<jats:italic>Staphylococcus<\/jats:italic>carriage in PD.<\/jats:p>","DOI":"10.1155\/2018\/5789094","type":"journal-article","created":{"date-parts":[[2018,8,2]],"date-time":"2018-08-02T23:35:07Z","timestamp":1533252907000},"page":"1-6","source":"Crossref","is-referenced-by-count":9,"title":["Oral Colonization of<i>Staphylococcus<\/i>Species in a Peritoneal Dialysis Population: A Possible Reservoir for PD-Related Infections?"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5911-8546","authenticated-orcid":true,"given":"Liliana","family":"Sim\u00f5es-Silva","sequence":"first","affiliation":[{"name":"i3S-Instituto de Investiga\u00e7\u00e3o e Inova\u00e7\u00e3o em Sa\u00fade, Universidade do Porto, Porto, Portugal"},{"name":"INEB-Instituto de Engenharia Biom\u00e9dica, Universidade do Porto, Rua Alfredo Allen 208, 4200-180 Porto, Portugal"},{"name":"Faculdade de Medicina, Universidade do Porto, Porto, Portugal"}]},{"given":"Susana","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, Porto, Portugal"}]},{"given":"Carla","family":"Santos-Araujo","sequence":"additional","affiliation":[{"name":"Departamento de Nefrologia, Centro Hospitalar de S\u00e3o Jo\u00e3o, EPE, Porto, Portugal"},{"name":"Departmento de Fisiologia e Cirurgia Cardiotor\u00e1cica, Faculdade de Medicina, Centro de I&D Cardiovascular, Universidade do Porto, Porto, Portugal"}]},{"given":"Margarida","family":"Tabaio","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1482-2024","authenticated-orcid":true,"given":"Manuel","family":"Pestana","sequence":"additional","affiliation":[{"name":"i3S-Instituto de Investiga\u00e7\u00e3o e Inova\u00e7\u00e3o em Sa\u00fade, Universidade do Porto, Porto, Portugal"},{"name":"INEB-Instituto de Engenharia Biom\u00e9dica, Universidade do Porto, Rua Alfredo Allen 208, 4200-180 Porto, Portugal"},{"name":"Departamento de Nefrologia, Centro Hospitalar de S\u00e3o Jo\u00e3o, EPE, Porto, Portugal"},{"name":"Departmento de Doen\u00e7as Renais, Urol\u00f3gicas e Infecciosas, Faculdade de Medicina, Universidade do Porto, Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8431-1567","authenticated-orcid":true,"given":"Isabel","family":"Soares-Silva","sequence":"additional","affiliation":[{"name":"i3S-Instituto de Investiga\u00e7\u00e3o e Inova\u00e7\u00e3o em Sa\u00fade, Universidade do Porto, Porto, Portugal"},{"name":"INEB-Instituto de Engenharia 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