Search Results - "de Azavedo, Joyce"

Resistance to Levofloxacin and Failure of Treatment of Pneumococcal Pneumonia by Davidson, Ross, Cavalcanti, Rodrigo, Brunton, James L, Bast, Darrin J, de Azavedo, Joyce C.S, Kibsey, Pamela, Fleming, Christine, Low, Donald E

“…This report describes four patients with pneumococcal pneumonia in whom empirical treatment with levofloxacin failed. In these patients, the isolates of…”
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Streptolysin S and necrotising infections produced by group G streptococcus by Humar, Deepali, Datta, Vivekananda, Bast, Darrin J, Beall, Bernard, De Azavedo, Joyce CS, Nizet, Victor

“…We encountered three patients with severe necrotising soft tissue infections due to β-haemolytic group G streptococcus. Due to strong clinical similarities…”
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Identification of Group A Streptococcus Antigenic Determinants Upregulated In Vivo by Salim, Kowthar Y, Cvitkovitch, Dennis G, Chang, Peter, Bast, Darrin J, Handfield, Martin, Hillman, Jeffrey D, de Azavedo, Joyce C. S

“…Group A Streptococcus (GAS) causes a range of diseases in humans, from mild noninvasive infections to severe invasive infections. The molecular basis for the…”
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Novel Murine Model of Pneumococcal Pneumonia: Use of Temperature as a Measure of Disease Severity To Compare the Efficacies of Moxifloxacin and Levofloxacin by BAST, Darrin J, YUE, M, CHEN, X, BELL, D, DRESSER, L, SASKIN, R, MANDELL, L. A, LOW, D. E, DE AZAVEDO, Joyce C. S

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A Nosocomial Outbreak of Fluoroquinolone-Resistant Streptococcus pneumoniae by Weiss, Karl, Restieri, C., Gauthier, Richard, Laverdière, Michel, McGeer, Allison, Davidson, Ross J., Kilburn, Laurie, Bast, Darrin J., de Azavedo, Joyce, Low, Donald E.

“…Over the course of a 20-month period, in a hospital respiratory ward in which ciprofloxacin was often used as empirical antimicrobial therapy for lower…”
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Type II topoisomerase mutations in Bacillus anthracis associated with high-level fluoroquinolone resistance by Bast, Darrin J., Athamna, Abed, Duncan, Carla L., de Azavedo, Joyce C. S., Low, Donald E., Rahav, Galia, Farrell, David, Rubinstein, Ethan

“…Objectives: To identify and characterize the mechanisms of high-level fluoroquinolone resistance in two strains of Bacillus anthracis following serial passage…”
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Identification of a Streptolysin S-Associated Gene Cluster and Its Role in the Pathogenesis of Streptococcus iniae Disease by FULLER, Jeffrey D, CAMUS, Alvin C, DUNCAN, Carla L, NIZET, Victor, BAST, Darrin J, THUNE, Ronald L, LOW, Donald E, DE AZAVEDO, Joyce C. S

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Prevalence and Characterization of Invasive Isolates of Streptococcus pyogenes with Reduced Susceptibility to Fluoroquinolones by POWIS, Jeff, MCGEER, Allison, LOW, Donald E, DUNCAN, Carla, GOREN, Ryan, DE AZAVEDO, Joyce C. S, BAST, Darrin J, PONG-PORTER, Sylvia, MAZZULLI, Tony, GREEN, Karen, WILLEY, Barbara

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Genetic Locus for Streptolysin S Production by Group A Streptococcus by NIZET, V, BEALL, B, BAST, D. J, DATTA, V, KILBURN, L, LOW, D. E, DE AZAVEDO, J. C. S

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two-component system sivS/R regulates virulence in Streptococcus iniae by Bolotin, Shelly, Fuller, Jeffrey D, Bast, Darrin J, de Azavedo, Joyce C.S

“…Streptococcus iniae causes invasive disease and death in fish, and to a lesser extent, sporadic cases of soft-tissue infections in humans. A two-component…”
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Role for sagA and siaA in Quorum Sensing and Iron Regulation in Streptococcus pyogenes by Salim, Kowthar Y, de Azavedo, Joyce C, Bast, Darrin J, Cvitkovitch, Dennis G

“…Streptococcus pyogenes is a ubiquitous and versatile pathogen that causes a variety of infections with a wide range of severity. The versatility of this…”
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Decreased Susceptibility of Streptococcus pneumoniae to Fluoroquinolones in Canada by Chen, Danny K, McGeer, Allison, de Azavedo, Joyce C, Low, Donald E

“…S treptococcus pneumoniae is the most common bacterial cause of community-acquired pneumonia, meningitis, otitis media, and sinusitis. The emergence of…”
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Capsule expression regulated by a two-component signal transduction system in Streptococcus iniae by Bolotin, Shelly, Fuller, Jeffrey D, Bast, Darrin J, Beveridge, Terry J, de Azavedo, Joyce C.S

“…Streptococcus iniae causes disease in fish and humans and the presence of capsule is associated with virulence. Tn917 transposon mutagenesis was performed to…”
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Activities of New Fluoroquinolones, Ketolides, and Other Antimicrobials against Blood Culture Isolates of Viridans Group Streptococci from across Canada, 2000 by GERSHON, Andrea S, DE AZAVEDO, Joyce C. S, GOURDEAU, Marie, MURRAY, Gilles, LOW, Donald E, MCGEER, Allison, OSTROWSKA, Krystyna I, CHURCH, Deirdre, HOBAN, Daryl J, HARDING, Godfrey K. M, WEISS, Karl, ABBOTT, Lewis, SMAILL, Fiona

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Prevalence and Mechanisms of Macrolide Resistance in Invasive and Noninvasive Group B Streptococcus Isolates from Ontario, Canada by DE AZAVEDO, Joyce C. S, MCGAVIN, Mary, DUNCAN, Carla, LOW, Donald E, MCGEER, Allison

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Reduced Virulence of Group A Streptococcal Tn916 Mutants That Do Not Produce Streptolysin S by BETSCHEL, S. D, BORGIA, S. M, BARG, N. L, LOW, D. E, DE AZAVEDO, J. C. S

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Antimicrobial susceptibility breakpoints and first-step parC mutations in Streptococcus pneumoniae: redefining fluoroquinolone resistance by Lim, Sue, Bast, Darrin, McGeer, Allison, de Azavedo, Joyce, Low, Donald E

“…Clinical antimicrobial susceptibility breakpoints are used to predict the clinical outcome of antimicrobial treatment. In contrast, microbiologic breakpoints…”
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Emergence of Macrolide Resistance in Throat Culture Isolates of Group A Streptococci in Ontario, Canada, in 2001 by KATZ, Kevin C, MCGEER, Allison J, LOW, Donald E, DUNCAN, Carla L, ASHI-SULAIMAN, Aisha, WILLEY, Barbara M, SARABIA, Alicia, MCCANN, Jacquie, PONG-PORTER, Sylvia, RZAYEV, Yana, DE AZAVEDO, Joyce S

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Regulation of sagA, siaA and scpC by SilCR, a putative signaling peptide of Streptococcus pyogenes by Salim, Kowthar Y, de Azavedo, Joyce C, Bast, Darrin J, Cvitkovitch, Dennis G

“…SilCR, a 17 amino acid putative signaling peptide, was proposed to modulate gene expression in Streptococcus pyogenes. We showed that SilCR added exogenously…”
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Streptococcus iniae Virulence Is Associated with a Distinct Genetic Profile by FULLER, Jeffrey D, BAST, Darrin J, NIZET, Victor, LOW, Donald E, DE AZAVEDO, Joyce C. S

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