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  1. Article ; Online: Inoculum effect of Enterobacterales co-expressing OXA-48 and CTX-M on the susceptibility to ceftazidime/avibactam and meropenem.

    Mizrahi, A / Chat, L / Danjean, M / Mory, C / Nguyen Van, J C / de Ponfilly, G Péan / Caméléna, F / Le Monnier, A / Bercot, B / Birgy, A / Jacquier, H / Pilmis, B

    European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology

    2022  Volume 41, Issue 5, Page(s) 853–858

    Abstract: Background: The treatment of infections caused by OXA-48/CTX-M-coproducing Enterobacterales may be based on new beta-lactam/beta-lactamase inhibitors, such as ceftazidime/avibactam (CZA), or on high dose of meropenem (MER). However, bacterial density at ...

    Abstract Background: The treatment of infections caused by OXA-48/CTX-M-coproducing Enterobacterales may be based on new beta-lactam/beta-lactamase inhibitors, such as ceftazidime/avibactam (CZA), or on high dose of meropenem (MER). However, bacterial density at the infection site may vary widely, and the inoculum effect of such antimicrobial strategies has never been specifically investigated. To determine if CZA or MER susceptibilities are impacted by high inocula of Enterobacterales co-expressing both enzymes: OXA-48 like and CTX-M.
    Methods: Determination of an inoculum effect was performed with a standard inoculum of 10
    Results: Thirty-nine isolates of ceftazidime-resistant Enterobacterales were included of which 27 (70%) co-expressed OXA-48 + CTX-M-15, 6 (15%) OXA-48 + CTX-M-14, and 6 (15%) OXA-181 + CTX-M-15. The susceptibility to the CZA combination was preserved whatever the inoculum used. Regarding MER, 24 (61.5%) of the isolates were susceptible to MER with the standard inoculum, 19 (48.7%) with a twofold increase, and only 15 (38.5%) with a tenfold increase.
    Conclusion: We showed that in vitro inoculum effect was observed with meropenem but not with CZA for OXA-48- combined with CTX-M-producing Enterobacterales.
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Azabicyclo Compounds/pharmacology ; Ceftazidime/pharmacology ; Drug Combinations ; Enterobacteriaceae/drug effects ; Meropenem/pharmacology ; Microbial Sensitivity Tests ; beta-Lactamase Inhibitors/pharmacology ; beta-Lactamases/genetics
    Chemical Substances Anti-Bacterial Agents ; Azabicyclo Compounds ; Drug Combinations ; avibactam, ceftazidime drug combination ; beta-Lactamase Inhibitors ; avibactam (7352665165) ; Ceftazidime (9M416Z9QNR) ; beta-Lactamases (EC 3.5.2.6) ; Meropenem (FV9J3JU8B1)
    Language English
    Publishing date 2022-03-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 603155-9
    ISSN 1435-4373 ; 0934-9723 ; 0722-2211
    ISSN (online) 1435-4373
    ISSN 0934-9723 ; 0722-2211
    DOI 10.1007/s10096-022-04430-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Emergence of Ceftriaxone Resistance during a Case of Pneumococcal Meningitis with Fatal Evolution.

    Mizrahi, A / Marvaud, J C / Pilmis, B / Nguyen Van, J C / Couzigou, C / Bruel, C / Engrand, N / Le Monnier, A / Lambert, T

    Antimicrobial agents and chemotherapy

    2020  Volume 64, Issue 3

    Abstract: We report a case of a 62-year-old man treated ... ...

    Abstract We report a case of a 62-year-old man treated for
    MeSH term(s) Ceftriaxone/blood ; Ceftriaxone/pharmacokinetics ; Ceftriaxone/therapeutic use ; Cephalosporins/blood ; Cephalosporins/pharmacokinetics ; Cephalosporins/therapeutic use ; Dexamethasone/blood ; Dexamethasone/pharmacokinetics ; Dexamethasone/therapeutic use ; Humans ; Male ; Meningitis, Pneumococcal/blood ; Meningitis, Pneumococcal/drug therapy ; Meningitis, Pneumococcal/metabolism ; Microbial Sensitivity Tests ; Middle Aged ; Penicillin-Binding Proteins/genetics ; Penicillin-Binding Proteins/metabolism ; Streptococcus pneumoniae/drug effects ; Streptococcus pneumoniae/pathogenicity
    Chemical Substances Cephalosporins ; Penicillin-Binding Proteins ; PBP 2x protein, Streptococcus (128284-03-7) ; Ceftriaxone (75J73V1629) ; Dexamethasone (7S5I7G3JQL)
    Language English
    Publishing date 2020-02-21
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/AAC.01958-19
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Dynamique de l'excretion virale chez les patients infectes par le SARS-CoV-2

    Toulemonde, P. E. / Vidal, B. / Mizrahi, A. / Nguyen Van, J. C. / Lourtet, J. / El Helali, N. / Perniceni, L. / Le Monnier, A. / Couzigou, C.

    Medecine et Maladies Infectieuses

    Abstract: Declaration de liens d'interets: Les auteurs declarent ne pas avoir de liens d'interets Copyright © ... ...

    Abstract Declaration de liens d'interets: Les auteurs declarent ne pas avoir de liens d'interets Copyright © 2020
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #832246
    Database COVID19

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  4. Article ; Online: Dynamique de l’excrétion virale chez les patients infectés par le SARS-CoV-2

    Toulemonde, P.E. / Vidal, B. / Mizrahi, A. / Nguyen Van, J.C. / Lourtet, J. / El Helali, N. / Perniceni, L. / Le Monnier, A. / Couzigou, C.

    Médecine et Maladies Infectieuses

    2020  Volume 50, Issue 6, Page(s) S27–S28

    Keywords Infectious Diseases ; covid19
    Language French
    Publisher Elsevier BV
    Publishing country us
    Document type Article ; Online
    ZDB-ID 423536-8
    ISSN 0399-077X ; 1166-8237
    ISSN 0399-077X ; 1166-8237
    DOI 10.1016/j.medmal.2020.06.441
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Implementation of Alere i Influenza A & B point of care test for the diagnosis of influenza in an ED.

    Trabattoni, E / Le, V / Pilmis, B / Pean de Ponfilly, G / Caisso, C / Couzigou, C / Vidal, B / Mizrahi, A / Ganansia, O / Le Monnier, A / Lina, B / Nguyen Van, J C

    The American journal of emergency medicine

    2017  Volume 36, Issue 6, Page(s) 916–921

    Abstract: Study objective: This study aimed to evaluate the impact of implementing rapid point-of-care testing (POCT) with the Alere i Influenza A & B in an emergency department (ED) during an influenza epidemic.: Methods: Direct nasal swabs were prospectively ...

    Abstract Study objective: This study aimed to evaluate the impact of implementing rapid point-of-care testing (POCT) with the Alere i Influenza A & B in an emergency department (ED) during an influenza epidemic.
    Methods: Direct nasal swabs were prospectively collected following the physical examination of patients aged >18years who presented to the ED of a tertiary hospital in France with influenza-like illness (ILI) symptoms (N=301) between February 1st and March 31st, 2016, which coincided with an influenza epidemic. Laboratory-based testing (standard of care) was used to obtain a diagnosis in February 2016 (pre-POCT cohort) and positive results were confirmed using polymerase chain reaction. The primary endpoint was patient time in the ED.
    Results: A total of 169 and 132 patients participated in the pre-POCT phase and POCT phase respectively. A significantly higher proportion of patients received a positive diagnosis in the POCT cohort compared with the pre-POCT cohort (31% versus 5.3%, P<0.01). Mean time spent in the ED and hospitalization rate were significantly lower in the POCT cohort (6.06h versus 4.15h, P=0.03, and 44.4% versus 9.7%, P=0.02, respectively). Despite similar rates in the prescription of antibiotics and antiviral therapies, the proportion of patients who were referred for additional tests was significantly lower in the POCT cohort (78.1% versus 62.1%, P=0.003, and 80.5% versus 63.6%, P=0.01, respectively).
    Conclusions: The Alere i Influenza A & B POCT reduced the length of stay in ED, the hospitalization rates, and the number of additional diagnostic tests compared with standard of care testing.
    MeSH term(s) Adult ; Aged ; DNA, Viral/analysis ; Emergency Service, Hospital ; Female ; France/epidemiology ; Humans ; Incidence ; Influenza A virus/genetics ; Influenza B virus/genetics ; Influenza, Human/diagnosis ; Influenza, Human/epidemiology ; Influenza, Human/virology ; Male ; Middle Aged ; Point-of-Care Testing ; Prospective Studies ; Retrospective Studies ; Reverse Transcriptase Polymerase Chain Reaction
    Chemical Substances DNA, Viral
    Language English
    Publishing date 2017-10-18
    Publishing country United States
    Document type Journal Article ; Observational Study
    ZDB-ID 605890-5
    ISSN 1532-8171 ; 0735-6757
    ISSN (online) 1532-8171
    ISSN 0735-6757
    DOI 10.1016/j.ajem.2017.10.046
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Prospective evaluation of the Alere i Influenza A&B nucleic acid amplification versus Xpert Flu/RSV.

    Nguyen Van, J C / Caméléna, F / Dahoun, M / Pilmis, B / Mizrahi, A / Lourtet, J / Behillil, S / Enouf, V / Le Monnier, A

    Diagnostic microbiology and infectious disease

    2016  Volume 85, Issue 1, Page(s) 19–22

    Abstract: The rapid and accurate detection of influenza virus in respiratory specimens is required for optimal management of patients with acute respiratory infections. Because of the variability of the symptoms and the numerous other causes of influenza-like ... ...

    Abstract The rapid and accurate detection of influenza virus in respiratory specimens is required for optimal management of patients with acute respiratory infections. Because of the variability of the symptoms and the numerous other causes of influenza-like illness, the diagnosis of influenza cannot be made on the basis of clinical criteria alone. Thus, rapid influenza diagnostic tests have been developed such as the Alere i Influenza A&B isothermal nucleic acid assay. We prospectively evaluated the performance of the Alere i Influenza A&B assay in comparison with our routine Xpert Flu/RSV assay. Positive samples were subtyped according to the protocol from the National Influenza Center (Paris, France). A total of 96 respiratory nasal swab samples were analyzed: with both methods, 38 were positive and 56 were negative. Samples were prospectively collected from January 20 to April 8, 2015, from patient (86 adult and 10 pediatric patients) presenting with an influenza-like illness through the French influenza season. In comparison with the Xpert Flu/RSV assay, the overall sensitivity and specificity of the Alere i Influenza A&B assay were 95% and 100%, respectively. Our results indicate that the Alere i Influenza A&B assay has a good overall analytical performance and a high degree of concordance with the PCR-based Xpert Flu/RSV assay. The Alere i Influenza A&B isothermal nucleic acid amplification test is a powerful tool for influenza detection due to its high sensitivity and specificity as well as its ability to generate results within 15min.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Influenza A virus/classification ; Influenza A virus/genetics ; Influenza B virus/classification ; Influenza B virus/genetics ; Influenza, Human/diagnosis ; Influenza, Human/immunology ; Influenza, Human/virology ; Male ; Middle Aged ; Nucleic Acid Amplification Techniques/methods ; Nucleic Acid Amplification Techniques/standards ; Reagent Kits, Diagnostic ; Reproducibility of Results ; Sensitivity and Specificity ; Young Adult
    Chemical Substances Reagent Kits, Diagnostic
    Language English
    Publishing date 2016-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604920-5
    ISSN 1879-0070 ; 0732-8893
    ISSN (online) 1879-0070
    ISSN 0732-8893
    DOI 10.1016/j.diagmicrobio.2015.11.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Infective endocarditis: Clinical presentation, etiology, and early predictors of in-hospital case fatality.

    Pilmis, B / Mizrahi, A / Laincer, A / Couzigou, C / El Helali, N / Nguyen Van, J-C / Abassade, P / Cador, R / Le Monnier, A

    Medecine et maladies infectieuses

    2016  Volume 46, Issue 1, Page(s) 44–48

    Abstract: Objective: We aimed to assess the clinical presentation, microbial etiology and outcome of patients presenting with infective endocarditis (IE).: Patients and methods: We conducted a four-year retrospective study including all patients presenting ... ...

    Abstract Objective: We aimed to assess the clinical presentation, microbial etiology and outcome of patients presenting with infective endocarditis (IE).
    Patients and methods: We conducted a four-year retrospective study including all patients presenting with IE.
    Results: We included 121 patients in the study. The median age was 74.8years. Most patients had native valve IE (57%). Staphylococcus aureus accounted for 24.8% of all IE. Surgery was indicated for 70 patients (57.9%) but actually performed in only 55 (44.7%). Factors associated with surgery were younger age (P=0.002) and prosthetic valve IE (P=0.001). Risk factors associated with in-hospital mortality were diabetes mellitus (OR=3.17), chronic renal insufficiency (OR=6.62), and surgical indication (OR=3.49). Mortality of patients who underwent surgery was one sixth of that of patients with surgical indication who did not have the surgery (P<0.001).
    MeSH term(s) Aged ; Aged, 80 and over ; Anti-Bacterial Agents/therapeutic use ; Cardiac Surgical Procedures/adverse effects ; Cardiac Surgical Procedures/utilization ; Comorbidity ; Diabetes Mellitus/epidemiology ; Embolism/epidemiology ; Embolism/etiology ; Endocarditis/drug therapy ; Endocarditis/epidemiology ; Endocarditis/etiology ; Endocarditis/surgery ; Female ; France ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/adverse effects ; Heart Valve Prosthesis Implantation/utilization ; Hospital Mortality ; Humans ; Kidney Failure, Chronic/epidemiology ; Male ; Middle Aged ; Postoperative Complications/epidemiology ; Postoperative Complications/etiology ; Postoperative Complications/therapy ; Prognosis ; Prosthesis-Related Infections/drug therapy ; Prosthesis-Related Infections/epidemiology ; Prosthesis-Related Infections/surgery ; Retrospective Studies
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2016-02
    Publishing country France
    Document type Journal Article
    ZDB-ID 423536-8
    ISSN 1769-6690 ; 0399-077X ; 1166-8237
    ISSN (online) 1769-6690
    ISSN 0399-077X ; 1166-8237
    DOI 10.1016/j.medmal.2015.12.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Détection phénotypique d'une carbapénémase associée à une bêtalactamase à spectre élargi chez Klebsiella pneumoniae.

    Chevet, K / Guyot, K / Mellon, G / Vidal, B / Couzigou, C / Misset, B / Janot, K / Lambert, T / Nguyen Van, J C

    Medecine et maladies infectieuses

    2012  Volume 42, Issue 1, Page(s) 33–35

    Title translation Phenotypic detection of carbapenemase associated with extended-spectrum beta-lactamase in Klebsiella pneumoniae.
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Bacterial Proteins/analysis ; Bacterial Proteins/genetics ; Bacterial Proteins/isolation & purification ; Drug Resistance, Multiple, Bacterial ; Genes, Bacterial ; Humans ; Klebsiella Infections/epidemiology ; Klebsiella Infections/microbiology ; Klebsiella pneumoniae/enzymology ; Klebsiella pneumoniae/genetics ; Klebsiella pneumoniae/isolation & purification ; Microbial Sensitivity Tests ; Paris/epidemiology ; Phenotype ; Substrate Specificity ; beta-Lactam Resistance ; beta-Lactamases/analysis ; beta-Lactamases/genetics ; beta-Lactams/pharmacology
    Chemical Substances Anti-Bacterial Agents ; Bacterial Proteins ; beta-Lactams ; beta-Lactamases (EC 3.5.2.6)
    Language French
    Publishing date 2012-01
    Publishing country France
    Document type Journal Article
    ZDB-ID 423536-8
    ISSN 1769-6690 ; 0399-077X ; 1166-8237
    ISSN (online) 1769-6690
    ISSN 0399-077X ; 1166-8237
    DOI 10.1016/j.medmal.2011.11.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Diagnosis and treatment strategies for community-acquired Streptococcus salivarius meningitis.

    Vignier, N / Couzigou, C / Nguyen Van, J C / Gerber, S / Gaillard, S / Bruel, C / Misset, B / Kitzis, M D / Le Monnier, A

    Medecine et maladies infectieuses

    2014  Volume 44, Issue 1, Page(s) 42–44

    MeSH term(s) Anti-Bacterial Agents/therapeutic use ; Ceftriaxone/therapeutic use ; Cerebrospinal Fluid/microbiology ; Cerebrospinal Fluid Rhinorrhea/surgery ; Cerebrospinal Fluid Shunts ; Community-Acquired Infections/cerebrospinal fluid ; Community-Acquired Infections/diagnosis ; Community-Acquired Infections/drug therapy ; Community-Acquired Infections/microbiology ; DNA, Bacterial/cerebrospinal fluid ; Dexamethasone/therapeutic use ; Drug Therapy, Combination ; Female ; Fistula/complications ; Fistula/surgery ; Humans ; Magnetic Resonance Imaging ; Meningitis/cerebrospinal fluid ; Meningitis/diagnosis ; Meningitis/drug therapy ; Meningitis/microbiology ; Middle Aged ; Respiratory Tract Fistula/complications ; Respiratory Tract Fistula/surgery ; Ribotyping ; Sphenoid Sinusitis/complications ; Sphenoid Sinusitis/diagnostic imaging ; Sphenoid Sinusitis/microbiology ; Sphenoid Sinusitis/surgery ; Streptococcal Infections/cerebrospinal fluid ; Streptococcal Infections/diagnosis ; Streptococcal Infections/drug therapy ; Streptococcal Infections/microbiology ; Streptococcus/isolation & purification ; Subarachnoid Space ; Tomography, X-Ray Computed
    Chemical Substances Anti-Bacterial Agents ; DNA, Bacterial ; Ceftriaxone (75J73V1629) ; Dexamethasone (7S5I7G3JQL)
    Language English
    Publishing date 2014-01
    Publishing country France
    Document type Case Reports ; Journal Article
    ZDB-ID 423536-8
    ISSN 1769-6690 ; 0399-077X ; 1166-8237
    ISSN (online) 1769-6690
    ISSN 0399-077X ; 1166-8237
    DOI 10.1016/j.medmal.2013.10.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Résistance aux antibiotiques par diminution de la perméabilité chez les bactéries à gram négatif.

    Nguyen Van, J C / Gutmann, L

    Presse medicale (Paris, France : 1983)

    1994  Volume 23, Issue 11, Page(s) 522, 527–31

    Abstract: Due to their outer membrane, Gram negative bacteria are the only germs which can resist antibiotics by a mechanism of reduced permeability. This outer hydrophobic membrane allows hydrophilic molecules to pass only through its aqueous pores. The ... ...

    Title translation Resistance to antibiotics caused by decrease of the permeability in gram-negative bacteria.
    Abstract Due to their outer membrane, Gram negative bacteria are the only germs which can resist antibiotics by a mechanism of reduced permeability. This outer hydrophobic membrane allows hydrophilic molecules to pass only through its aqueous pores. The transmembrane pores have a trimere structure with a monomere component acting as an aqueous channel. Mean pore diameter is 1 to 1.2 nm. Changes in the absolute number of pores or in qualitative function reduce the diffusion of antibiotics entering the cell. This mechanism of reduced permeability can lead to cross resistance to several families of antibiotics. It is difficult to determine the clinical incidence since such resistances are not always detected. The species most often involved are enterobacteria including Klebsiella, Enterobacter, Serratia and Salmonella. For Pseudomonas aeruginosa, resistance to imipenem by reduced permeability results from a deficit in protein D2 and concerns 12 to 15% of the strains identified in French Hospitals. Reduced permeability is particularly effective when associated with another mechanism of resistance allowing the bacteria to express a higher level of resistance.
    MeSH term(s) 4-Quinolones ; Anti-Bacterial Agents/pharmacokinetics ; Anti-Infective Agents/pharmacokinetics ; Cell Membrane/drug effects ; Cell Membrane/physiology ; Cell Membrane Permeability/drug effects ; Drug Resistance, Microbial ; Gram-Negative Bacteria/drug effects ; Gram-Negative Bacteria/ultrastructure ; In Vitro Techniques ; Lactams ; Porins/pharmacology
    Chemical Substances 4-Quinolones ; Anti-Bacterial Agents ; Anti-Infective Agents ; Lactams ; Porins
    Language French
    Publishing date 1994-03-19
    Publishing country France
    Document type English Abstract ; Journal Article ; Review
    ZDB-ID 120943-7
    ISSN 2213-0276 ; 0755-4982 ; 0032-7867 ; 0301-1518
    ISSN (online) 2213-0276
    ISSN 0755-4982 ; 0032-7867 ; 0301-1518
    Database MEDical Literature Analysis and Retrieval System OnLINE

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