RT info:eu-repo/semantics/article T1 Characterization and antimicrobial susceptibility of one antibiotic-sensitive and one multidrug-resistant Corynebacterium kroppenstedtii strain isolated from patients with granulomatous mastitis A1 Fernández Natal, Isabel A1 Rodríguez Lázaro, David A1 Marrodán Ciordia, T. A1 Sáez Nieto, J. A. A1 Valdezate Ramos, S. A1 Rodríguez Pollán, R. H. A1 Tauch, A. A1 Soriano, F. K1 Antimicrobial susceptibility K1 Corynebacterium kroppenstedtii K1 granulomatous mastitis K1 MALDI-TOF MS K1 multidrug-resistant isolate K1 Microbiology K1 Microbiología AB Human infections associated with Corynebacterium kroppenstedtii are rarely reported, and this organism is usually described as antibiotic sensitive. Almost all published cases of C. kroppenstedtii infections have been associated with breast pathology in women and have been described in New Zealand, France, Canada, India and Japan. Here we describe the microbiologic characteristics of two strains isolated from two women diagnosed of granulomatous mastitis in Spain. One C. kroppenstedtii isolate was antibiotic sensitive while the other was multidrug resistant. Biochemical identification was possible using a wide battery of methods including API Coryne V2.0, API Strep, API NH, API NE, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and 16S rRNA gene amplification and sequencing. Antimicrobial susceptibility to 28 antibiotics as determined by Etest showed one isolate being sensitive to benzylpenicillin, ciprofloxacin, moxifloxacin, gentamicin, vancomycin, clindamycin, tetracycline, linezolid and rifampin. The second isolate showed resistance to ciprofloxacin, moxifloxacin, clindamycin, tetracycline and rifampin. The multidrug-resistant isolate contained the erm(X), tet(W), cmx, aphA1-IAB, strAB and sul1 resistance genes known from the R plasmid pJA144188 of Corynebacterium resistens. These genes were absent in the genome of the antibiotic-sensitive isolate. This report confirms the tropism of this microorganism for women's breasts and presents the first description of a multidrug-resistant C. kroppenstedtii strain. PB Elsevier YR 2016 FD 2016-11 LK http://hdl.handle.net/10259/4398 UL http://hdl.handle.net/10259/4398 LA eng NO Gerencia Regional de Salud, Junta de Castilla y León, Spain, research project GRS 698/A/2011 DS Repositorio Institucional de la Universidad de Burgos RD 25-abr-2024