eprintid: 571 rev_number: 7 eprint_status: archive userid: 2 dir: disk0/00/00/05/71 datestamp: 2022-03-15 23:55:12 lastmod: 2023-07-10 23:30:27 status_changed: 2022-03-15 23:55:12 type: article metadata_visibility: show creators_name: Alibi, Sana creators_name: Ramos-Vivas, José creators_name: Ben Selma, Walid creators_name: Ben Mansour, Hedi creators_name: Boukadida, Jalel creators_name: Navas, Jesús creators_id: creators_id: jose.ramos@uneatlantico.es creators_id: creators_id: creators_id: creators_id: title: Virulence of clinically relevant multidrug resistant Corynebacterium striatum strains and their ability to adhere to human epithelial cells and inert surfaces ispublished: pub subjects: uneat_bm divisions: uneatlantico_produccion_cientifica full_text_status: none keywords: Corynebacterium striatum; Adherence; Biofilm; Pili; Virulence abstract: Corynebacterium striatum is a nosocomial pathogen which is increasingly associated with serious infections in both immunocompetent and immunocompromised patients. However, little is known about virulence factors and mechanisms that may enhance the establishment and long-term survival of Corynebacterium striatum. in the hospital environment. In this study, we investigated the ability of 22 multidrug-resistant C. striatum clinical isolates to adhere to human epithelial cells and to produce biofilm on polystyrene plates, glass and various tracheostomy tubes. We also tested the virulence of these strains on the nematode Caenorhabditis elegans. They showed good adhesion to epithelial human cells after 180 min of infection. The 22 C. striatum were able to produce biofilms on positively and negatively charged abiotic surfaces at 37 °C. They were also able to infect and to kill Caenorhabditis elegans after 5 days of infection. The virulence condition was associated with the presence of SpaDEF operon encoding pili in all strains. This study provides new insights on virulence mechanisms that may contribute to the persistence of C. striatum in the hospital environment, increasing the probability of causing nosocomial infections. date: 2021-06 publication: Microbial Pathogenesis volume: 155 pagerange: 104887 id_number: doi:10.1016/j.micpath.2021.104887 refereed: TRUE issn: 08824010 official_url: http://doi.org/10.1016/j.micpath.2021.104887 access: close language: en citation: Artículo Materias > Biomedicina Universidad Europea del Atlántico > Investigación > Producción Científica Cerrado Inglés Corynebacterium striatum is a nosocomial pathogen which is increasingly associated with serious infections in both immunocompetent and immunocompromised patients. However, little is known about virulence factors and mechanisms that may enhance the establishment and long-term survival of Corynebacterium striatum. in the hospital environment. In this study, we investigated the ability of 22 multidrug-resistant C. striatum clinical isolates to adhere to human epithelial cells and to produce biofilm on polystyrene plates, glass and various tracheostomy tubes. We also tested the virulence of these strains on the nematode Caenorhabditis elegans. They showed good adhesion to epithelial human cells after 180 min of infection. The 22 C. striatum were able to produce biofilms on positively and negatively charged abiotic surfaces at 37 °C. They were also able to infect and to kill Caenorhabditis elegans after 5 days of infection. The virulence condition was associated with the presence of SpaDEF operon encoding pili in all strains. This study provides new insights on virulence mechanisms that may contribute to the persistence of C. striatum in the hospital environment, increasing the probability of causing nosocomial infections. metadata Alibi, Sana; Ramos-Vivas, José; Ben Selma, Walid; Ben Mansour, Hedi; Boukadida, Jalel y Navas, Jesús mail SIN ESPECIFICAR, jose.ramos@uneatlantico.es, SIN ESPECIFICAR, SIN ESPECIFICAR, SIN ESPECIFICAR, SIN ESPECIFICAR (2021) Virulence of clinically relevant multidrug resistant Corynebacterium striatum strains and their ability to adhere to human epithelial cells and inert surfaces. Microbial Pathogenesis, 155. p. 104887. ISSN 08824010