Magni A
Sapienza University of Rome
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Featured researches published by Magni A.
Frontiers in Microbiology | 2014
Maria Trancassini; Valerio Iebba; Nicoletta Citerà; Vanessa Tuccio; Magni A; Paola Varesi; Riccardo Valerio De Biase; Valentina Totino; Floriana Santangelo; Antonella Gagliardi; Serena Schippa
Cystic fibrosis (CF) patients have chronic airway infection and frequent exposure to antibiotics, which often leads to the emergence of resistant organisms. Achromobacter xylosoxidans is a new emergent pathogen in CF spectrum. From 2005 to 2010 we had an outbreak in A. xylosoxidans prevalence in our CF center, thus, the present study was aimed at deeply investigating virulence traits of A. xylosoxidans strains isolated from infected CF patients. To this purpose, we assessed A. xylosoxidans genome variability by randomly amplified polymorphic DNA (RAPD), biofilm production, antibiotic resistances, and motility. All A. xylosoxidans strains resulted to be biofilm producers, and were resistant to antibiotics usually employed in CF treatment. Hodge Test showed the ability to produce carbapenemase in some strains. Strains who were resistant to β-lactamics antibiotics, showed the specific band related to metal β-lactamase (blaIMP-1), and some of them showed to possess the integron1. Around 81% of A. xylosoxidans strains were motile. Multivariate analysis showed that RAPD profiles were able to predict Forced Expiratory Volume (FEV1%) and biofilm classes. A significant prevalence of strong biofilm producers strains was found in CF patients with severely impaired lung functions (FEV1% class 1). The outbreak we had in our center (prevalence from 8.9 to 16%) could be explained by an enhanced adaptation of A. xylosoxidans in the nosocomial environment, despite of aggressive antibiotic regimens that CF patients usually undergo.
Journal of Cystic Fibrosis | 2013
Maria Trancassini; N. Citerà; V. Tuccio; Magni A; Valerio Iebba; R.V. De Biase; Serena Schippa
116 Effect of Staphylococcus aureus supernatant on airway epithelium functionality in infants with cystic fibrosis K. Bessaci-Kabouya1,2, B. Gaultier2, J.-M. Zahm1, C. Coraux1, P. Mauran1, L. Weiss2, M.-L. Dalphin2, J. Derelle2, A. Tatopoulos2, F. Huet2, S. Perez-Martin2, P. Birembaut1, M. Abely1,2. 1INSERM U903, Reims, France; 2CF France East Network, Besancon, Dijon, Nancy, Strasbourg, Reims, France
Journal of Clinical Microbiology | 2010
Magni A; Maria Trancassini; Paola Varesi; Valerio Iebba; Anna Curci; Claudia Pecoraro; Giuseppe Cimino; Serena Schippa; Serena Quattrucci
Journal of Clinical Microbiology | 2010
Magni A; Maria Trancassini; Paola Varesi; Valerio Iebba; Anna Curci; Claudia Pecoraro; Giuseppe Cimino; Serena Schippa; Serena Quattrucci
New Microbiologica | 2007
Magni A; Alessandra Giordano; Carlo Mancini; Claudia Pecoraro; Paola Varesi; Serena Quattrucci; Maria Trancassini
Journal of Microbiological Methods | 2006
Alessandra Giordano; Magni A; Maria Trancassini; Paola Varesi; R. Turner; Carlo Mancini
New Microbiologica | 1998
Alessandra Giordano; Magni A; Filadoro F; Graziani C; Serena Quattrucci; Cipriani P
New Microbiologica | 1993
Maria Trancassini; Alessandra Giordano; Magni A; Cipriani P
New Microbiologica | 2001
Alessandra Giordano; Magni A; Graziani C; Sessa R; Serena Quattrucci; Cipriani P
New Microbiologica | 1993
Alessandra Giordano; Magni A; Maria Trancassini; Cipriani P