Anna Marchese
Massachusetts Institute of Technology
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Microbiologia Medica | 2013
Erika Coppo; Pier Andrea Dusi; Monica Dotta; Eugenio A. Debbia; Anna Marchese
We report the characterization of an Acinetobacter baumannii resistant to colistin isolated from a patient treated with colistin for 22 days. The identification and initial susceptibility testing of the strain was performed at ASL3 Imperiese with the Vitek-2 automated system and than the strain was re-identified at the Sezione di Microbiologia with APINE. In vitro activity of antimicrobial agents was determined by the microdiluition methods. The detection of the beta-lactamase gene was performed by PCR and for the analysis of LPS were sequenced the genes of the PmrABC system. We compared the PFGE profile of the colistin-resistant A. baumannii with 5 A. baumannii colistin-susceptible strains isolated in the same Hospital during 2010. The strain was resistant to all antimicrobial agents tested, except to tygecyclin. The PFGE shown that the A. baumannii colistin-resistant was closery related to the colistin-susceptible strains. The sequencing of the PmrABC system showed that the strain had a single mutation in the PmrB component. Colistin-resistant strain have recently been found in several Gram-negative bacteria such A. baumannii, K. pneumoniae and P. aeruginosa. This clinical case confirms that resistance to colistin in A. baumannii can be selected in vivo following the use of colistin in therapy.
Diagnostic Microbiology and Infectious Disease | 2011
Elisabetta Ugolotti; Roberto Bandettini; Anna Marchese; Laura Gualco; Irene Vanni; Luana Borzi; Eddi Di Marco; Elio Castagnola; Giovanni Melioli; Roberto Biassoni
Microbiologia Medica | 2005
Simone Cagnacci; Fabrizio Cavallini; Elisabetta Maioli; Simona Roveta; Clara Cassanelli; Anna Marchese; Eugenio A. Debbia
Microbiologia Medica | 2006
Elisabetta Maioli; Roberto Bandettini; Enrico Battolla; Rosalba Bona; Luigi Carlo Bottaro; Rinaldo Brunetti; Roberto Capuzzo; Gian Luigi Devoto; Maria Dono; Andrea Dusi; Manuela Fedele; Giorgia Ferro; Giovanni Rosario Giusto; Stefania Mannelli; Federica Massucco; Maria Gabriella Mazzarello; Marco Mori; Mascja Perfumo; Gabriella Piatti; Silvia Reali; Agostina Ronca; Luisa Santoriello; Domizio Serra; David Usiglio; Anna Marchese; Eugenio A. Debbia
Microbiologia Medica | 2007
Simona Roveta; Anna Marchese; Eugenio A. Debbia; Roberto Bandettini
Microbiologia Medica | 2007
Paola Pistarà; Stefania Mannelli; Anna Marchese; Simona Roveta
Microbiologia Medica | 2007
Agostina Ronca; Sabrina Brenci; Luisa Santoriello; Anna Marchese; Simona Roveta
Microbiologia Medica | 2012
Shanti Levi; Paolo Piazzai; Orietta Illiberi; Erika Coppo; Ramona Barbieri; Eugenio A. Debbia; Anna Marchese
Microbiologia Medica | 2012
Erika Coppo; Ramona Barbieri; Andrea Dusi; Marco Mori; David Usiglio; Luigi Carlo Bottaro; Paolo Piazzai; Luisa Santoriello; Agostina Ronca; Anna Marchese; Eugenio A. Debbia
Microbiologia Medica | 2012
Ramona Barbieri; Erika Coppo; Luigi Carlo Bottaro; Paolo Piazzai; Orietta Illiberi; Pier Andrea Dusi; Rita Revello; David Usiglio; Marco Mori; Silvia Reali; Gian Luigi Devoto; Luisa Santoriello; Agostina Ronca; Anna Marchese; Eugenio A. Debbia