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In vitro activity of ozenoxacin against Staphylococcus aureus and Streptococcus pyogenes clinical isolates recovered in a worldwide multicentre study (2020-2022).
García-Castillo, María; Hernández-García, Marta; Correa, Adriana; Coppi, Marco; Griener, Thomas; Fritsche, Thomas; Pitart, Cristina; Sampaio, Jorge; Seifert, Harald; Wake, Karen; Wootton, Mandy; Vila, Jordi; Cantón, Rafael.
Afiliación
  • García-Castillo M; Servicio de Microbiología, Hospital Universitario Ramón y Cajal, Madrid, Spain.
  • Hernández-García M; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto Salud Carlos III, Madrid, Spain.
  • Correa A; Servicio de Microbiología, Hospital Universitario Ramón y Cajal, Madrid, Spain.
  • Coppi M; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto Salud Carlos III, Madrid, Spain.
  • Griener T; Clínica Imbanaco Grupo Quirón Salud, Cali, Valle del Cauca, Colombia.
  • Fritsche T; Universidad Santiago de Cali, Cali, Valle del Cauca, Colombia.
  • Pitart C; Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.
  • Sampaio J; Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy.
  • Seifert H; Clinical Section of Microbiology, Alberta Precision Laboratories, Calgary, Alberta, Canada.
  • Wake K; Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
  • Wootton M; Division of Laboratory Medicine, Marshfield Clinic Research Institute, Marshfield, WI, USA.
  • Vila J; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto Salud Carlos III, Madrid, Spain.
  • Cantón R; Servicio de Microbiología, Hospital Clinic, Barcelona, Spain.
JAC Antimicrob Resist ; 6(3): dlae088, 2024 Jun.
Article en En | MEDLINE | ID: mdl-38872714
ABSTRACT

Objectives:

We performed a multicentre study (2020-2022) to compare the in vitro activity of ozenoxacin and comparator agents against Staphylococcus aureus and Streptococcus pyogenes clinical isolates from skin and soft-tissue infections (SSTI).

Methods:

A total of 1725 isolates (1454 S. aureus and 271 S. pyogenes) were collected in 10 centres from eight countries between January 2020 and December 2022. Antimicrobial susceptibility testing was determined (microdilution-SENSITITRE). Results were interpreted following European Committee on Antimicrobial Susceptibility Testing (EUCAST) 2023 (clinical breakpoints, ECOFF) and CLSI criteria.

Results:

Ozenoxacin exhibited high in vitro activity against S. aureus (MIC50/90 = 0.002/0.12 mg/L) and S. pyogenes (MIC50/90 = 0.015/0.03 mg/L), inhibiting 99% of the isolates at MIC ≤ 0.5 mg/L and at MIC ≤ 0.06, respectively. The most active comparators against S. aureus were retapamulin (MIC90 = 0.12 mg/L), fusidic acid (MIC90 = 0.25 mg/L) and mupirocin (MIC90 = 0.5 mg/L); and against S. pyogenes were retapamulin (MIC90 = 0.03 mg/L), clindamycin (MIC90 = 0.12 mg/L) and mupirocin (MIC90 = 0.25 mg/L). Ciprofloxacin and methicillin resistant rates for S. aureus were 31.3% (455/1454) and 41% (598/1454), respectively. Additionally, 62% (373/598) of the MRSA were also ciprofloxacin non-susceptible, whereas only 10% (23/271) of the MSSA were ciprofloxacin resistant. Ozenoxacin was more active against ciprofloxacin-susceptible S. aureus than against ciprofloxacin-resistant isolates, and showed a slightly higher MIC in MRSA isolates than in MSSA. However, ozenoxacin activity was comparable in both ciprofloxacin-resistant MSSA and MRSA subsets. On the other hand, ozenoxacin had similar activity in ciprofloxacin-susceptible and resistant S. pyogenes isolates.

Conclusions:

Ozenoxacin is a potent antimicrobial agent of topic use against Gram-positive bacteria causing SSTI, including MRSA isolates non-susceptible to ciprofloxacin.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: JAC Antimicrob Resist Año: 2024 Tipo del documento: Article País de afiliación: España Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: JAC Antimicrob Resist Año: 2024 Tipo del documento: Article País de afiliación: España Pais de publicación: Reino Unido