G
Giovanni Gherardi
Researcher at Università Campus Bio-Medico
Publications - 88
Citations - 2498
Giovanni Gherardi is an academic researcher from Università Campus Bio-Medico. The author has contributed to research in topics: Multilocus sequence typing & Population. The author has an hindex of 27, co-authored 82 publications receiving 2212 citations. Previous affiliations of Giovanni Gherardi include Centers for Disease Control and Prevention & Sapienza University of Rome.
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Journal ArticleDOI
Enterococcus spp. produces slime and survives in rat peritoneal macrophages
Lucilla Baldassarri,Roberto Cecchini,Lucia Bertuccini,Maria Grazia Ammendolia,Francesca Iosi,Carla Renata Arciola,Lucio Montanaro,Roberta Di Rosa,Giovanni Gherardi,Giordano Dicuonzo,Graziella Orefici,Roberta Creti +11 more
TL;DR: Enterococcal clinical isolates were investigated for the ability to form biofilm on inert surfaces, as a measure of slime production, in an attempt to find new possible virulence factors for these microorganisms to indicate a role of slime for survival in stressful conditions.
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Molecular Epidemiology and Distribution of Serotypes, Surface Proteins, and Antibiotic Resistance among Group B Streptococci in Italy
Giovanni Gherardi,Monica Imperi,Lucilla Baldassarri,Marco Pataracchia,Giovanna Alfarone,Simona Recchia,Graziella Orefici,Giordano Dicuonzo,Roberta Creti +8 more
TL;DR: Most erythromycin-resistant GBS strains were of serotype V, were erm(B) positive, and belonged to the PFGE type 1/CC1 group, suggesting that macrolide resistance may have arisen both by clonal dissemination and by the horizontal transfer of resistance genes.
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Phenotypic and genotypic characterization of Stenotrophomonas maltophilia isolates from patients with cystic fibrosis: Genome diversity, biofilm formation, and virulence
Arianna Pompilio,Stefano Pomponio,Valentina Crocetta,Giovanni Gherardi,Fabio Verginelli,Ersilia Fiscarelli,Giordano Dicuonzo,Vincenzo Savini,Domenico D'Antonio,Giovanni Di Bonaventura +9 more
TL;DR: The phenotypic differences observed between CF and non-CF isolates may imply different selective conditions and persistence mechanisms in a hostile and heterogeneous environment such as CF lung.
Journal ArticleDOI
emm and sof gene sequence variation in relation to serological typing of opacity-factor-positive group A streptococci
Bernard Beall,Giovanni Gherardi,Marguerite Lovgren,Richard R. Facklam,Betty A. Forwick,Gregory J. Tyrrell +5 more
TL;DR: The presence of specific, hypervariable emm/sof pairs within multiple isolates appears likely to be a reliable indicator of their overall genetic relatedness, and to be very useful for accurate subtyping of GAS isolates by an approach that has relevance to decades of past M-type-based epidemiological data.