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Lemaire C, Cheminet M, Duployez C, Artus M, Ballaa Y, Devos L, Plainvert C, Poyart C, Le Gall F, Tazi A, Lanotte P. A LAMP-based assay for the molecular detection of group B Streptococcus. Eur J Clin Microbiol Infect Dis 2023; 42:1245-1250. [PMID: 37702956 DOI: 10.1007/s10096-023-04656-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/07/2023] [Indexed: 09/14/2023]
Abstract
PURPOSE Streptococcus agalactiae remains a major pathogen in human health, especially in neonatal infection. Detection in pregnant women is essential to initiate intrapartum antibiotic prophylaxis. This study compared the HiberGene loop-mediated isothermal amplification (LAMP) assay to culture, the reference method, for the detection of group B Streptococcus (GBS) in pregnant women. METHODS This was a prospective multicenter study conducted in four French hospitals. Three hundred fifty-four non-redundant routine care vaginal swabs were analyzed by both methods, LAMP assay and culture. Clinicians and patients were blinded to the results of the LAMP assay. RESULTS Three hundred thirty-seven samples presented concordant results, 15 presented discordant results, and 2 were invalid using the LAMP assay (excluded from the study). Compared to culture, the LAMP assay had a sensitivity of 87.7%, a specificity of 98%, a negative predictive value of 97.6%, and a positive predictive value of 89.3%. CONCLUSION The HiberGene GBS LAMP assay is an easy test that possesses good performances compared with the reference method, culture. It could be used in case of emergency when a quick result is needed.
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Affiliation(s)
- Coralie Lemaire
- Service de Bactériologie-Virologie, CHRU de Tours, Université de Tours, 37044, Tours, France
| | - Mélinda Cheminet
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Service de Bactériologie, Université Paris Cité, 75014, Paris, France
| | - Claire Duployez
- Laboratoire de Bactériologie, CHU de Lille, Université de Lille, 59000, Lille, France
| | - Mathilde Artus
- Laboratoire de Biologie Médicale, CH de Quimper, 29000, Quimper, France
| | - Yassine Ballaa
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Service de Bactériologie, Université Paris Cité, 75014, Paris, France
| | - Laura Devos
- Laboratoire de Bactériologie, CHU de Lille, Université de Lille, 59000, Lille, France
| | - Céline Plainvert
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Service de Bactériologie, Université Paris Cité, 75014, Paris, France
- Centre National de Référence Des Streptocoques, Hôpital Cochin, 75014, Paris, France
| | - Claire Poyart
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Service de Bactériologie, Université Paris Cité, 75014, Paris, France
- Centre National de Référence Des Streptocoques, Hôpital Cochin, 75014, Paris, France
| | - Florence Le Gall
- Laboratoire de Biologie Médicale, CH de Quimper, 29000, Quimper, France
| | - Asmaa Tazi
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Service de Bactériologie, Université Paris Cité, 75014, Paris, France
- Centre National de Référence Des Streptocoques, Hôpital Cochin, 75014, Paris, France
| | - Philippe Lanotte
- Service de Bactériologie-Virologie, CHRU de Tours, Université de Tours, 37044, Tours, France.
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Le Gallou B, Pastuszka A, Lemaire C, Mereghetti L, Lanotte P. Group B Streptococcus CRISPR1 Typing of Maternal, Fetal, and Neonatal Infectious Disease Isolates Highlights the Importance of CC1 in In Utero Fetal Death. Microbiol Spectr 2023; 11:e0522122. [PMID: 37341591 PMCID: PMC10434043 DOI: 10.1128/spectrum.05221-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 05/24/2023] [Indexed: 06/22/2023] Open
Abstract
We performed a descriptive analysis of group B Streptococcus (GBS) isolates responsible for maternal and fetal infectious diseases from 2004 to 2020 at the University Hospital of Tours, France. This represents 115 isolates, including 35 isolates responsible for early-onset disease (EOD), 48 isolates responsible for late-onset disease (LOD), and 32 isolates from maternal infections. Among the 32 isolates associated with maternal infection, 9 were isolated in the context of chorioamnionitis associated with in utero fetal death. Analysis of neonatal infection distribution over time highlighted the decrease in EOD since the early 2000s, while LOD incidence has remained relatively stable. All GBS isolates were analyzed by sequencing their CRISPR1 locus, which is an efficient way to determine the phylogenetic affiliation of strains, as it correlates with the lineages defined by multilocus sequence typing (MLST). Thus, the CRISPR1 typing method allowed us to assign a clonal complex (CC) to all isolates; among these isolates, CC17 was predominant (60/115, 52%), and the other main CCs, such as CC1 (19/115, 17%), CC10 (9/115, 8%), CC19 (8/115, 7%), and CC23 (15/115, 13%), were also identified. As expected, CC17 isolates (39/48, 81.3%) represented the majority of LOD isolates. Unexpectedly, we found mainly CC1 isolates (6/9) and no CC17 isolates that were responsible for in utero fetal death. Such a result highlights the possibility of a particular role of this CC in in utero infection, and further investigations should be conducted on a larger group of GBS isolated in a context of in utero fetal death. IMPORTANCE Group B Streptococcus is the leading bacterium responsible for maternal and neonatal infections worldwide, also involved in preterm birth, stillbirth, and fetal death. In this study, we determined the clonal complex of all GBS isolates responsible for neonatal diseases (early- and late-onset diseases) and maternal invasive infections, including chorioamnionitis associated with in utero fetal death. All GBS was isolated at the University Hospital of Tours from 2004 to 2020. We described the local group B Streptococcus epidemiology, which confirmed national and international data concerning neonatal disease incidence and clonal complex distribution. Indeed, neonatal diseases are mainly characterized by CC17 isolates, especially in late-onset disease. Interestingly, we identified mainly CC1 isolates responsible for in utero fetal death. CC1 could have a particular role in this context, and such a result should be confirmed on a larger group of GBS isolated from in utero fetal death.
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Affiliation(s)
- Brice Le Gallou
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Adeline Pastuszka
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Coralie Lemaire
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Laurent Mereghetti
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Philippe Lanotte
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
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Briaud P, Gautier T, Rong V, Mereghetti L, Lanotte P, Hiron A. The Streptococcus agalactiae Exonuclease ExoVII Is Required for Resistance to Exogenous DNA-Damaging Agents. J Bacteriol 2023; 205:e0002423. [PMID: 37162366 PMCID: PMC10294681 DOI: 10.1128/jb.00024-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/27/2023] [Indexed: 05/11/2023] Open
Abstract
Streptococcus agalactiae is a human pathogen responsible for severe invasive infections in newborns. In this bacterium, XseB, a part of the ExoVII exonuclease, was shown to be specifically more abundant in the hypervirulent ST-17 strains. In Escherichia coli, ExoVII is associated either with mismatch repair or with recombinational DNA repair and is redundant with other exonucleases. In this study, the biological role of S. agalactiae ExoVII was examined. The ΔexoVII mutant strain was subjected to different DNA-damaging agents, as well as a large set of mutants impaired either in the mismatch repair pathway or in processes of recombinational DNA repair. Our results clarified the role of this protein in Gram-positive bacteria as we showed that ExoVII is not significantly involved in mismatch repair but is involved in bacterial recovery after exposure to exogenous DNA-damaging agents such as ciprofloxacin, UV irradiation, or hydrogen peroxide. We found that ExoVII is more particularly important for resistance to ciprofloxacin, likely as part of the RecF DNA repair pathway. Depending on the tested agent, ExoVII appeared to be fully redundant or nonredundant with another exonuclease, RecJ. The importance of each exonuclease, ExoVII or RecJ, in the process of DNA repair is thus dependent on the considered DNA lesion. IMPORTANCE This study examined the role of the ExoVII exonuclease of Streptococcus agalactiae within the different DNA repair processes. Our results concluded that ExoVII is involved in bacterial recovery after exposure to different exogenous DNA-damaging agents but not in the mismatch repair pathway. We found that ExoVII is particularly important for resistance to ciprofloxacin, likely as part of the RecF DNA repair pathway.
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Affiliation(s)
- P. Briaud
- Université de Tours, INRAE, ISP, Tours, France
| | - T. Gautier
- Université de Tours, INRAE, ISP, Tours, France
| | - V. Rong
- Université de Tours, INRAE, ISP, Tours, France
| | - L. Mereghetti
- Université de Tours, INRAE, ISP, Tours, France
- CHRU de Tours, Service de Bactériologie-Virologie-Hygiène, Tours, France
| | - P. Lanotte
- Université de Tours, INRAE, ISP, Tours, France
- CHRU de Tours, Service de Bactériologie-Virologie-Hygiène, Tours, France
| | - A. Hiron
- Université de Tours, INRAE, ISP, Tours, France
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Le Gallou B, Pastuszka A, Lemaire C, Perrotin F, Mitanchez D, Lanotte P, Mereghetti L. Long-term surveillance of group B Streptococcus strains isolated from infection and colonization in pregnant women and newborns. J Med Microbiol 2023; 72. [PMID: 37335614 DOI: 10.1099/jmm.0.001717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023] Open
Abstract
Introduction. Group B Streptococcus (GBS) remains the leading cause of bacterial neonatal infections worldwide, despite the spread of recommendations on vaginal screening and antibiotic prophylaxis.Hypothesis/Gap Statement. There is a need to evaluate the potential changes in GBS epidemiology over time following the introduction of such guidelines.Aim. Our aim was to perform a descriptive analysis of the epidemiological characteristics of GBS by conducting a long-term surveillance of strains isolated between 2000 and 2018, using molecular typing methods.Methodology. A total of 121 invasive strains, responsible for maternal infections (20 strains), fetal infections (8 strains) and neonatal infections (93 strains), were included in the study, representing all the invasive isolates during the period; in addition, 384 colonization strains isolated from vaginal or newborn samples were randomly selected. The 505 strains were characterized by capsular polysaccharide (CPS) type multiplex PCR assay and the clonal complex (CC) was assigned using a single nucleotide polymorphism PCR assay. Antibiotic susceptibility was also determined.Results. CPS types III (32.1 % of the strains), Ia (24.6 %) and V (19 %) were the most prevalent. The five main CCs observed were CC1 (26.3 % of the strains), CC17 (22.2 %), CC19 (16.2 %), CC23 (15.8 %) and CC10 (13.9 %). Neonatal invasive GBS diseases were predominantly due to CC17 isolates (46.3 % of the strains), which mainly express CPS type III (87.5 %), with a very high prevalence in late-onset diseases (76.2 %).Conclusion. Between 2000 and 2018, we observed a decrease in the proportion of CC1 strains, which mainly express CPS type V, and an increase in the proportion of CC23 strains, mainly expressing CPS type Ia. Conversely, there was no significant change in the proportion of strains resistant to macrolides, lincosamides or tetracyclines. The two molecular techniques used in our study provide almost as much information as classical serotyping and multilocus sequence typing, but are quicker, easy to perform, and avoid long sequencing and analysis steps.
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Affiliation(s)
- Brice Le Gallou
- UMR1282 ISP, INRAE, Université de Tours, Tours, France
- Service de Bactériologie-Virologie-Hygiène, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Adeline Pastuszka
- UMR1282 ISP, INRAE, Université de Tours, Tours, France
- Service de Bactériologie-Virologie-Hygiène, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Coralie Lemaire
- UMR1282 ISP, INRAE, Université de Tours, Tours, France
- Service de Bactériologie-Virologie-Hygiène, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Franck Perrotin
- Service d'Obstétrique, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Delphine Mitanchez
- Service de Néonatologie, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Philippe Lanotte
- UMR1282 ISP, INRAE, Université de Tours, Tours, France
- Service de Bactériologie-Virologie-Hygiène, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Laurent Mereghetti
- UMR1282 ISP, INRAE, Université de Tours, Tours, France
- Service de Bactériologie-Virologie-Hygiène, Centre Hospitalier Universitaire de Tours, Tours, France
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Appegren A, Boschiroli ML, De Cruz K, Michelet L, Héry-Arnaud G, Kempf M, Lanotte P, Bemer P, Peuchant O, Pestel-Caron M, Skalli S, Brasme L, Martin C, Enault C, Carricajo A, Guet-Revillet H, Ponsoda M, Jacomo V, Bourgoin A, Trombert-Paolantoni S, Carrière C, Dupont C, Conquet G, Galal L, Banuls AL, Godreuil S. Genetic Diversity and Population Structure of Mycobacterium bovis at the Human-Animal-Ecosystem Interface in France: “A One Health Approach”. Pathogens 2023; 12:pathogens12040548. [PMID: 37111434 PMCID: PMC10143977 DOI: 10.3390/pathogens12040548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/21/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Mycobacterium bovis infects cattle and wildlife, and also causes a small proportion of tuberculosis cases in humans. In most European countries, M. bovis infections in cattle have been drastically reduced, but not eradicated. Here, to determine the M. bovis circulation within and between the human, cattle, and wildlife compartments, we characterized by spoligotyping and mycobacterial interspersed repetitive unit-variable number tandem repeat (MIRU-VNTR) typing the genetic diversity of M. bovis isolates collected from humans, cattle, and wildlife in France from 2000 to 2010. We also assessed their genetic structure within and among the different host groups, and across time and space. The M. bovis genetic structure and its spatiotemporal variations showed different dynamics in the human and animal compartments. Most genotypes detected in human isolates were absent in cattle and wildlife isolates, possibly because in patients, M. bovis infection was contracted abroad or was the reactivation of an old lesion. Therefore, they did not match the genetic pool present in France during the study period. However, some human-cattle exchanges occurred because some genotypes were common to both compartments. This study provides new elements for understanding M. bovis epidemiology in France, and calls for increased efforts to control this pathogen worldwide.
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Affiliation(s)
- Anaïs Appegren
- Laboratory of Bacteriology, CHU Montpellier, 34000 Montpellier, France
| | - Maria Laura Boschiroli
- ANSES Laboratory for Animal Health, Tuberculosis National Reference Laboratory, University Paris-Est, 94000 Maisons-Alfort, France
| | - Krystel De Cruz
- ANSES Laboratory for Animal Health, Tuberculosis National Reference Laboratory, University Paris-Est, 94000 Maisons-Alfort, France
| | - Lorraine Michelet
- ANSES Laboratory for Animal Health, Tuberculosis National Reference Laboratory, University Paris-Est, 94000 Maisons-Alfort, France
| | | | - Marie Kempf
- Laboratory of Bacteriology, CHU Angers, 49000 Angers, France
| | | | - Pascale Bemer
- Laboratory of Bacteriology, CHU Nantes, 44000 Nantes, France
| | - Olivia Peuchant
- Laboratory of Bacteriology, CHU Bordeaux, 33000 Bordeaux, France
| | | | - Soumaya Skalli
- Laboratory of Bacteriology, CHU Rouen, 76000 Rouen, France
| | - Lucien Brasme
- Laboratory of Bacteriology, CHU Reims, 51000 Reims, France
| | | | - Cecilia Enault
- Laboratory of Bacteriology, CHU Nîmes, 30000 Nîmes, France
| | - Anne Carricajo
- Laboratory of Bacteriology, CHU Saint-Etienne, 42000 Saint-Etienne, France
| | | | | | | | - Anne Bourgoin
- Laboratory of Bacteriology, CHU Poitiers, 86000 Poitiers, France
| | | | - Christian Carrière
- Laboratory of Bacteriology, CHU Montpellier, 34000 Montpellier, France
- UMR, MIVEGEC, IRD, CNRS, Université de Montpellier, 34000 Montpellier, France
| | - Chloé Dupont
- Laboratory of Bacteriology, CHU Montpellier, 34000 Montpellier, France
| | - Guilhem Conquet
- Laboratory of Bacteriology, CHU Montpellier, 34000 Montpellier, France
| | - Lokman Galal
- UMR, MIVEGEC, IRD, CNRS, Université de Montpellier, 34000 Montpellier, France
| | - Anne-Laure Banuls
- UMR, MIVEGEC, IRD, CNRS, Université de Montpellier, 34000 Montpellier, France
| | - Sylvain Godreuil
- Laboratory of Bacteriology, CHU Montpellier, 34000 Montpellier, France
- UMR, MIVEGEC, IRD, CNRS, Université de Montpellier, 34000 Montpellier, France
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Delaye T, Torregrosa Diaz JM, Vallée M, Gallego Hernanz MP, Gyan E, Lanotte P, Roblot F, Rammaert B. Outcome of febrile neutropenic patients treated for bacteriuria in hematology. Support Care Cancer 2023; 31:102. [PMID: 36622445 DOI: 10.1007/s00520-022-07522-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 11/02/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Positive urine sample is a frequent finding in post-chemotherapy febrile neutropenia (FN) and can lead to prolonged antibiotic therapy. The aim of this study was to assess the outcome of bacteriuria episodes in FN patients receiving targeted antibiotic therapy. MATERIALS AND METHODS A multi-centric retrospective study was conducted over a four-year period (2014-2019) on systematic urinalysis. All consecutive first bacteriuria episodes (≤ 2 bacteria with at least ≥ 103 CFU/mL) during FN in hospitalized adult patients for hematological malignancies were included. Relapse and recurrence were defined by fever or urinary tract symptoms (UTS) with the same bacterial subspecies in urine occurring ≤ 7 days and ≤ 30 days, respectively, after antibiotic discontinuation. Mortality rate was determined at 30 days. Targeted antibiotic therapy ≤ 10 days for women and ≤ 14 for men was considered as short course. RESULTS Among 97 patients, 105 bacteriuria episodes on systematic urinalysis were analyzed; 67.6% occurred in women, 41.9% in AML patients, 17.1% were bacteremic, 14.2% presented with UTS, and 61.9% were treated with short-course antibiotic treatment. One death was reported. In men, no relapse/recurrence was noted, even in the short-course antibiotic group. In women, 2.8% of episodes treated with short-course antibiotic led to relapse or recurrence. CONCLUSIONS Relapse, recurrence, and mortality were uncommon events in FN patients experiencing bacteriuria episode, whatever the antibiotic duration. To distinguish asymptomatic bacteriuria from infection remained challenging in women. In men, systematic urinalysis at onset of FN could be useful.
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Affiliation(s)
- Thomas Delaye
- Université de Poitiers, Faculté de Médecine et Pharmacie, Poitiers, France.,CHU de Poitiers, Service de Maladies Infectieuses et Tropicales, Poitiers, France
| | | | - Maxime Vallée
- Université de Poitiers, Faculté de Médecine et Pharmacie, Poitiers, France.,CHU de Poitiers, Service de Chirurgie Urologique et de Transplantations Rénales, Poitiers, France.,INSERM U1070, Poitiers, France
| | | | - Emmanuel Gyan
- CHU de Tours, Service d'Hématologie Et Thérapie Cellulaire, Equipe LNOx CNRS ERL 7001, Tours, France
| | - Philippe Lanotte
- CHU de Tours, Service de Bactériologie Département des Agents Infectieux Tours, Poitiers, France
| | - France Roblot
- Université de Poitiers, Faculté de Médecine et Pharmacie, Poitiers, France.,CHU de Poitiers, Service de Maladies Infectieuses et Tropicales, Poitiers, France.,INSERM U1070, Poitiers, France
| | - Blandine Rammaert
- Université de Poitiers, Faculté de Médecine et Pharmacie, Poitiers, France. .,CHU de Poitiers, Service de Maladies Infectieuses et Tropicales, Poitiers, France. .,INSERM U1070, Poitiers, France. .,Service de Médecine Interne et Maladies Infectieuses et Tropicales, Centre Hospitalier Universitaire de Poitiers, 2 Rue de la Milétrie, CS 90577, Cedex, 86021, Poitiers, France.
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Prazuck T, Lanotte P, Le Moal G, Hocqueloux L, Sunder S, Catroux M, Garcia M, Perfezou P, Gras G, Plouzeau C, Lévêque N, Beby-Defaux A. Pooling Rectal, Pharyngeal, and Urine Samples to Detect Neisseria gonorrhoeae, Chlamydia trachomatis, and Mycoplasma genitalium Using Multiplex Polymerase Chain Reaction Is as Effective as Single-Site Testing for Men Who Have Sex With Men. Open Forum Infect Dis 2022; 9:ofac496. [PMID: 36324326 PMCID: PMC9620425 DOI: 10.1093/ofid/ofac496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Indexed: 11/06/2022] Open
Abstract
Background Screening for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) at pharyngeal, urogenital, and anorectal sites is recommended for men who have sex with men (MSM). Pooling samples is a promising technique, but no data are available when pooled screening also includes Mycoplasma genitalium (MG). The main objective of this study was to examine the sensitivity of pooled samples for detecting CT, NG, and MG in MSM using nucleic acid amplification versus single-site testing. Methods In this multicenter study, MSM with a positive result for CT, NG, or MG were recalled to the clinic for treatment and were asked to participate in this study. Separate samples were sent to a central virological department that proceeded to form the pooled samples. Testing was performed using the multiplex real-time polymerase chain reaction Allplex STI Essential Assay (Seegene, Seoul, Korea), which can simultaneously detect 7 pathogens. Results A total of 130 MSM with at least 1 positive test for CT, NG, or MG were included. A total of 25.4% had a coinfection. The sensitivities of pooled-sample testing were 94.8% for CT, 97.0% for NG, and 92.3% for MG. Pooling failed to detect 8 infections, but pooled-sample analysis missed detecting only samples with a low bacterial load (cycle threshold >35). Conclusions Pooling samples from MSM to detect CT, NG, and MG is as sensitive as individual-site testing for these 3 pathogens using the Allplex assay. Missed infections with a very low bacterial load could have a low impact on further transmission. Clinical Trials Registration. NCT03568695.
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Affiliation(s)
- Thierry Prazuck
- Service des maladies infectieuses et tropicales, CHR Orléans, Orleans, France
| | - Philippe Lanotte
- Service de bacteriologie-virologie, Centre Hospitalier Universitaire Tours, Tours, France
| | - Gwénaël Le Moal
- Service des maladies infectieuses, Centre Hospitalier Universitaire Poitiers, Poitiers, France
| | - Laurent Hocqueloux
- Service des maladies infectieuses et tropicales, CHR Orléans, Orleans, France
| | - Simon Sunder
- Service des maladies infectieuses, CH Niort, Niort, France
| | - Mélanie Catroux
- Service des maladies infectieuses, Centre Hospitalier Universitaire Poitiers, Poitiers, France
| | - Magali Garcia
- Laboratoire inflammation tissus épitheliaux et cytokines EA 4331, Université de Poitiers, Poitiers, France
| | | | - Guillaume Gras
- Service des maladies infectieuses, Centre Hospitalier Universitaire Tours, Tours, France
| | - Chloé Plouzeau
- Laboratoire de bactériologie, Centre Hospitalier Universitaire Poitiers, Poitiers, France
| | - Nicolas Lévêque
- Laboratoire inflammation tissus épitheliaux et cytokines EA 4331, Université de Poitiers, Poitiers, France
| | - Agnès Beby-Defaux
- Laboratoire de virologie et mycobactériologie, Centre Hospitalier Universitaire Poitiers, Poitiers, France
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Chesnay A, Pastuszka A, Richard L, Beby-Defaux A, Cateau E, Le Brun C, Desoubeaux G, Lanotte P. Multiplex PCR assay targeting Trichomonas vaginalis: need for biological evaluation and interpretation. Diagn Microbiol Infect Dis 2022; 104:115808. [DOI: 10.1016/j.diagmicrobio.2022.115808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 08/25/2022] [Accepted: 08/28/2022] [Indexed: 11/28/2022]
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9
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Peuchant O, Lhomme E, Martinet P, Grob A, Baïta D, Bernier C, Gibaud SA, Le Hen I, Le Naour E, Trignol-Viguier N, Lanotte P, Lefebvre P, Vachée A, Girard T, Loubinoux J, Bébéar C, Ghezzoul B, Roussillon C, Kret M, de Barbeyrac B. Doxycycline versus azithromycin for the treatment of anorectal Chlamydia trachomatis infection in women concurrent with vaginal infection (CHLAZIDOXY study): a multicentre, open-label, randomised, controlled, superiority trial. Lancet Infect Dis 2022; 22:1221-1230. [PMID: 35550262 DOI: 10.1016/s1473-3099(22)00148-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/18/2022] [Accepted: 02/18/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Anorectal infections with Chlamydia trachomatis are commonly found in women. Although the efficacy of doxycycline and azithromycin is comparable in the treatment of urogenital infection, their efficacies toward anorectal infection remain unclear. We therefore aimed to compare a single dose of azithromycin with a 7-day course of doxycycline for the treatment of anorectal C trachomatis infection in women with concurrent vaginal infection. METHODS We did a multicentre, open-label, randomised, controlled, superiority trial involving four sexually transmitted infection screening centres and three pregnancy termination centres in France. We included sexually active adult women (≥18 years) with a positive C trachomatis vaginal swab who agreed to provide self-collected anorectal swabs for C trachomatis detection. Participants were randomly assigned (1:1), using block sizes of six and eight and stratification by each investigating centre, to orally receive either azithromycin (a single 1-g dose, with or without food) or doxycycline (100 mg in the morning and evening at mealtimes for 7 days [ie, 100 mg of doxycycline twice per day for 7 days]). All laboratory staff who did the bacteriological analyses, but not the participants and the investigators, were masked to the treatment groups. The primary outcome was the microbiological anorectal cure rate defined as a C trachomatis-negative nucleic acid amplification test (NAAT) result in anorectal specimens 6 weeks after treatment initiation among women who had a baseline C trachomatis-positive anorectal NAAT result. The primary analysis was done in the modified intention-to-treat population, with multiple imputation, which included all women who underwent randomisation and had a C trachomatis-positive vaginal and anorectal NAAT result at baseline. Adverse events were reported in all women who underwent randomisation. This study is registered with ClinicalTrials.gov, number NCT03532464. FINDINGS Between Oct 19, 2018, and April 17, 2020, we randomly assigned a total of 460 participants to either the doxycycline group (n=230) or the azithromycin group (n=230). Four (1%) of 460 participants were excluded because they refused to take doxycycline or were found to be ineligible after randomisation. Among the 456 participants, 357 (78%) had a concurrent C trachomatis-positive anorectal NAAT result at baseline; 184 (52%) of 357 were in the doxycycline group and 173 (48%) were in the azithromycin group (ie, the modified intention-to-treat population). Microbiological anorectal cure occurred in 147 (94%) of 156 participants in the doxycycline group (28 missing values) versus 120 (85%) of 142 in the azithromycin group (31 missing values; adjusted odds ratio with imputation of missing values 0·43 [95% CI 0·21-0·91]; p=0·0274). Reported adverse events possibly related to treatment were notified in 53 (12%) of 456 women: 24 (11%) of 228 in the doxycycline group and 29 (13%) of 228 in the azithromycin group. Gastrointestinal disorders were the most frequently occurring, in 43 (9%) of 456 women: 17 (8%) of 228 in the doxycycline group and 26 (11%) of 228 in the azithromycin group. INTERPRETATION The microbiological anorectal cure rate was significantly lower among women who received a single dose of azithromycin than among those who received a 1-week course of doxycycline. This finding suggests that doxycycline should be the first-line therapy for C trachomatis infection in women. FUNDING French Ministry of Health. TRANSLATION For the French translation of the abstract see Supplementary Materials section.
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Affiliation(s)
- Olivia Peuchant
- Laboratoire de Bactériologie, Centre National de Référence des Infections Sexuellement Transmissibles Bactériennes, CHU Bordeaux, Bordeaux, France
| | - Edouard Lhomme
- Pôle Santé Publique, Service d'information Médicale, CHU Bordeaux, Bordeaux, France
| | | | - Anne Grob
- CeGIDD, Département des Bouches du Rhône, Marseille, France
| | - Dounia Baïta
- Centre d'Orthogénie, CHU Bordeaux, Bordeaux, France
| | - Claire Bernier
- CeGIDD, Department des Maladies Infectieuses, INSERM UIC 1413, CHU Nantes, Nantes, France
| | | | | | | | | | | | | | - Anne Vachée
- Laboratoire de Bactériologie, CH Roubaix, Roubaix, France
| | - Thomas Girard
- Espace Santé Jeunes Guy Moquet, Hôpital Hôtel-Dieu, AP-HP, Paris, France
| | - Julien Loubinoux
- Service de Bactériologie, Hôpital Cochin, AP-HP Centre-Université de Paris, Paris, France
| | - Cécile Bébéar
- Laboratoire de Bactériologie, Centre National de Référence des Infections Sexuellement Transmissibles Bactériennes, CHU Bordeaux, Bordeaux, France
| | | | - Caroline Roussillon
- Direction de la Recherche Clinique et de l'innovation, Unité de Sécurité et Vigilance des Essais Cliniques, CHU Bordeaux, Bordeaux, France
| | - Marion Kret
- Pôle Santé Publique, Service d'information Médicale, CHU Bordeaux, Bordeaux, France
| | - Bertille de Barbeyrac
- Laboratoire de Bactériologie, Centre National de Référence des Infections Sexuellement Transmissibles Bactériennes, CHU Bordeaux, Bordeaux, France.
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10
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Bonnet I, Haddad E, Guglielmetti L, Bémer P, Bernard L, Bourgoin A, Brault R, Catho G, Caumes E, Escaut L, Fourniols E, Fréchet-Jachym M, Gaudart A, Guillot H, Lafon-Desmurs B, Lanoix JP, Lanotte P, Lemaignen A, Lemaire B, Lemaitre N, Michau C, Morand P, Mougari F, Marigot-Outtandy D, Patrat-Delon S, Perpoint T, Piau C, Pourcher V, Zarrouk V, Zeller V, Veziris N, Jauréguiberry S, Aubry A. Clinical Features and Outcome of Multidrug-Resistant Osteoarticular Tuberculosis: A 12-Year Case Series from France. Microorganisms 2022; 10:microorganisms10061215. [PMID: 35744731 PMCID: PMC9229793 DOI: 10.3390/microorganisms10061215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 02/04/2023] Open
Abstract
The optimal treatment for osteoarticular infection due to multidrug-resistant tuberculosis strains (MDR-OATB) remains unclear. This study aims to evaluate the diagnosis, management and outcome of MDR-OATB in France. We present a case series of MDR-OATB patients reviewed at the French National Reference Center for Mycobacteria between 2007 and 2018. Medical history and clinical, microbiological, treatment and outcome data were collected. Twenty-three MDR-OATB cases were reported, representing 3% of all concurrent MDR-TB cases in France. Overall, 17 were male, and the median age was 32 years. Six patients were previously treated for TB, including four with first-line drugs. The most frequently affected site was the spine (n = 16). Bone and joint surgery were required in 12 patients. Twenty-one patients (91%) successfully completed the treatment with a regimen containing a mean of four drugs (range, 2-6) for a mean duration of 20 months (range, 13-27). Overall, high rates of treatment success were achieved following WHO MDR-TB treatment guidelines and individualized patient management recommendations by the French National TB Consilium. However, the optimal combination of drugs, duration of treatment and role of surgery in the management of MDR-OATB remains to be determined.
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Affiliation(s)
- Isabelle Bonnet
- Cimi-Paris, INSERM, U1135, Centre d’Immunologie et des Maladies Infectieuses, Sorbonne Université, 75013 Paris, France; (I.B.); (L.G.); (N.V.)
- Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), Sorbonne-Université, 75013 Paris, France
- TB Consilium of the National Reference Center for Mycobacteria, 75013 Paris, France
| | - Elie Haddad
- Service de Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, AP-HP, INSERM 1136, Sorbonne-Université, 75013 Paris, France; (E.H.); (E.C.); (V.P.); (S.J.)
| | - Lorenzo Guglielmetti
- Cimi-Paris, INSERM, U1135, Centre d’Immunologie et des Maladies Infectieuses, Sorbonne Université, 75013 Paris, France; (I.B.); (L.G.); (N.V.)
- Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), Sorbonne-Université, 75013 Paris, France
- TB Consilium of the National Reference Center for Mycobacteria, 75013 Paris, France
| | - Pascale Bémer
- Department of Bacteriology, University Hospital, CHU Nantes, 44000 Nantes, France;
| | - Louis Bernard
- Service de Médecine Interne et Maladies Infectieuses, Centre Hospitalier Régional Universitaire de Tours, 37000 Tours, France; (L.B.); (A.L.)
| | - Anne Bourgoin
- Service de Virologie et Mycobactériologie, Centre Hospitalier Universitaire de Poitiers, 86000 Poitiers, France;
| | - Rachel Brault
- Service de Rhumatologie, Centre Hospitalier Universitaire de Poitiers, 86000 Poitiers, France;
| | - Gaud Catho
- Service de Maladies Infectieuses et Tropicales, Hospices Civils de Lyon, 69002 Lyon, France; (G.C.); (T.P.)
| | - Eric Caumes
- Service de Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, AP-HP, INSERM 1136, Sorbonne-Université, 75013 Paris, France; (E.H.); (E.C.); (V.P.); (S.J.)
| | - Lélia Escaut
- Service de Maladies Infectieuses et Tropicales, Hôpital Bicêtre, AP-HP, Université Paris Saclay, 94270 Le Kremlin-Bicêtre, France;
| | - Eric Fourniols
- Service de Chirurgie Orthopédique, Hôpital Pitié-Salpêtrière, AP-HP, Sorbonne-Université, 75013 Paris, France;
| | - Mathilde Fréchet-Jachym
- Sanatorium, Centre Hospitalier de Bligny, 91640 Briis-sous-Forges, France; (M.F.-J.); (B.L.); (D.M.-O.)
| | - Alice Gaudart
- Service de Bactériologie, Centre Hospitalier Universitaire de Nice, 06000 Nice, France;
| | - Hélène Guillot
- Service de Médecine Interne, Hôpital Robert Ballanger, 93600 Aulnay-sous-Bois, France;
| | - Barthélémy Lafon-Desmurs
- Service de Maladies Infectieuses et Tropicales, Centre Hospitalier de Tourcoing, 59200 Tourcoing, France;
| | - Jean-Philippe Lanoix
- Service de Maladies Infectieuses et Tropicales, Centre Hospitalier Universitaire d’Amiens-Picardie, 80054 Amiens, France;
| | - Philippe Lanotte
- Service de Bactériologie, Centre Hospitalier Universitaire de Tours, 37000 Tours, France;
| | - Adrien Lemaignen
- Service de Médecine Interne et Maladies Infectieuses, Centre Hospitalier Régional Universitaire de Tours, 37000 Tours, France; (L.B.); (A.L.)
| | - Bénédicte Lemaire
- Sanatorium, Centre Hospitalier de Bligny, 91640 Briis-sous-Forges, France; (M.F.-J.); (B.L.); (D.M.-O.)
| | - Nadine Lemaitre
- Service de Bactériologie, Centre Hospitalier Universitaire d’Amiens-Picardie, 59200 Tourcoing, France;
| | - Christophe Michau
- Service de Maladies Infectieuses et Tropicales, Centre Hospitalier de Saint-Nazaire, 44606 Saint-Nazaire, France;
| | - Philippe Morand
- Service de Bactériologie, Hôpital Cochin, AP-HP, Centre-Université de Paris, 75014 Paris, France;
| | - Faiza Mougari
- Service de Bactériologie, Hôpital Lariboisière, AP-HP, Nord-Université de Paris, 75018 Paris, France;
| | - Dhiba Marigot-Outtandy
- Sanatorium, Centre Hospitalier de Bligny, 91640 Briis-sous-Forges, France; (M.F.-J.); (B.L.); (D.M.-O.)
| | - Solène Patrat-Delon
- Service de Maladies Infectieuses et Tropicales, Centre Hospitalier Universitaire de Rennes, 35033 Rennes, France;
| | - Thomas Perpoint
- Service de Maladies Infectieuses et Tropicales, Hospices Civils de Lyon, 69002 Lyon, France; (G.C.); (T.P.)
| | - Caroline Piau
- Service de Bactériologie, Centre Hospitalier Universitaire de Rennes, 35033 Rennes, France;
| | - Valérie Pourcher
- Service de Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, AP-HP, INSERM 1136, Sorbonne-Université, 75013 Paris, France; (E.H.); (E.C.); (V.P.); (S.J.)
| | - Virginie Zarrouk
- Service de Médecine Interne, Hôpital Beaujon, AP-HP, Nord-Université de Paris, 92110 Clichy, France;
| | - Valérie Zeller
- Centre de Référence des Infections Ostéo-Articulaires Complexes, Groupe Hospitalier Diaconesses Croix Saint-Simon, 75020 Paris, France;
| | - Nicolas Veziris
- Cimi-Paris, INSERM, U1135, Centre d’Immunologie et des Maladies Infectieuses, Sorbonne Université, 75013 Paris, France; (I.B.); (L.G.); (N.V.)
- Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), Sorbonne-Université, 75013 Paris, France
- TB Consilium of the National Reference Center for Mycobacteria, 75013 Paris, France
- Service de Bactériologie, Hôpitaux Saint-Antoine, Tenon, Trousseau, Rothschild, AP-HP, 75012 Paris, France
| | - Stéphane Jauréguiberry
- Service de Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, AP-HP, INSERM 1136, Sorbonne-Université, 75013 Paris, France; (E.H.); (E.C.); (V.P.); (S.J.)
- Service de Maladies Infectieuses et Tropicales, Hôpital Bicêtre, AP-HP, Université Paris Saclay, 94270 Le Kremlin-Bicêtre, France;
- Centre de Référence des Infections Ostéo-Articulaires Complexes, Hôpital Pitié-Salpêtrière, AP-HP, 75013 Paris, France
| | - Alexandra Aubry
- Cimi-Paris, INSERM, U1135, Centre d’Immunologie et des Maladies Infectieuses, Sorbonne Université, 75013 Paris, France; (I.B.); (L.G.); (N.V.)
- Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), Sorbonne-Université, 75013 Paris, France
- TB Consilium of the National Reference Center for Mycobacteria, 75013 Paris, France
- Centre de Référence des Infections Ostéo-Articulaires Complexes, Hôpital Pitié-Salpêtrière, AP-HP, 75013 Paris, France
- Correspondence:
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11
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Lemaire C, Le Gallou B, Lanotte P, Mereghetti L, Pastuszka A. Distribution, Diversity and Roles of CRISPR-Cas Systems in Human and Animal Pathogenic Streptococci. Front Microbiol 2022; 13:828031. [PMID: 35173702 PMCID: PMC8841824 DOI: 10.3389/fmicb.2022.828031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/10/2022] [Indexed: 12/26/2022] Open
Abstract
Streptococci form a wide group of bacteria and are involved in both human and animal pathologies. Among pathogenic isolates, differences have been highlighted especially concerning their adaptation and virulence profiles. CRISPR-Cas systems have been identified in bacteria and many streptococci harbor one or more systems, particularly subtypes I-C, II-A, and III-A. Since the demonstration that CRISPR-Cas act as an adaptive immune system in Streptococcus thermophilus, a lactic bacteria, the diversity and role of CRISPR-Cas were extended to many germs and functions were enlarged. Among those, the genome editing tool based on the properties of Cas endonucleases is used worldwide, and the recent attribution of the Nobel Prize illustrates the importance of this tool in the scientific world. Another application is CRISPR loci analysis, which allows to easily characterize isolates in order to understand the interactions of bacteria with their environment and visualize species evolution. In this review, we focused on the distribution, diversity and roles of CRISPR-Cas systems in the main pathogenic streptococci.
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Affiliation(s)
- Coralie Lemaire
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Brice Le Gallou
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Philippe Lanotte
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
- *Correspondence: Philippe Lanotte,
| | - Laurent Mereghetti
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Adeline Pastuszka
- Université de Tours, INRAE, Infectiologie et Santé Publique, BRMF, Tours, France
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire de Tours, Tours, France
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12
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Tavernier E, Barbier F, Meziani F, Quenot JP, Herbrecht JE, Landais M, Roux D, Seguin P, Schnell D, Veinstein A, Veber B, Lasocki S, Lu Q, Beduneau G, Ferrandiere M, Dahyot-Fizelier C, Plantefeve G, Nay MA, Merdji H, Andreu P, Vecellio L, Muller G, Cabrera M, Le Pennec D, Respaud R, Lanotte P, Gregoire N, Leclerc M, Helms J, Boulain T, Lacherade JC, Ehrmann S. Inhaled amikacin versus placebo to prevent ventilator-associated pneumonia: the AMIKINHAL double-blind multicentre randomised controlled trial protocol. BMJ Open 2021; 11:e048591. [PMID: 34521664 PMCID: PMC8442072 DOI: 10.1136/bmjopen-2020-048591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Pre-emptive inhaled antibiotics may be effective to reduce the occurrence of ventilator-associated pneumonia among critically ill patients. Meta-analysis of small sample size trials showed a favourable signal. Inhaled antibiotics are associated with a reduced emergence of antibiotic resistant bacteria. The aim of this trial is to evaluate the benefit of a 3-day course of inhaled antibiotics among patients undergoing invasive mechanical ventilation for more than 3 days on the occurrence of ventilator-associated pneumonia. METHODS AND ANALYSIS Academic, investigator-initiated, parallel two group arms, double-blind, multicentre superiority randomised controlled trial. Patients invasively ventilated more than 3 days will be randomised to receive 20 mg/kg inhaled amikacin daily for 3 days or inhaled placebo (0.9% Sodium Chloride). Occurrence of ventilator-associated pneumonia will be recorded based on a standardised diagnostic framework from randomisation to day 28 and adjudicated by a centralised blinded committee. ETHICS AND DISSEMINATION The protocol and amendments have been approved by the regional ethics review board and French competent authorities (Comité de protection des personnes Ouest I, No.2016-R29). All patients will be included after informed consent according to French law. Results will be disseminated in international scientific journals. TRIAL REGISTRATION NUMBERS EudraCT 2016-001054-17 and NCT03149640.
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Affiliation(s)
| | | | - Ferhat Meziani
- Service de Réanimation, Nouvel Hôpital Civil, Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, Strasbourg, France
| | - Jean-Pierre Quenot
- Department of Intensive Care, Lipness Team, INSERM Research Centre LNC-UMR1231, LabExLipSTIC, and INSERM CIC 1432, Clinical Epidemiology, François Mitterrand University Hospital, University of Burgundy, Dijon, France
| | - Jean-Etienne Herbrecht
- Médecine Intensive Réanimation, Hôpital Hautepierre, Hôpitaux universitaires de Strasbourg, Strasbourg, France
| | - Mickael Landais
- Réanimation médico-chirurgicale, CH du Mans, Le Mans, France
| | - Damien Roux
- Médecine Intensive Réanimation, Hôpital Louis Mourier, Assistance Publique - Hopitaux de Paris, Colombes, France
| | | | - David Schnell
- Réanimation Polyvalente, CH Angouleme, Angouleme, France
| | - Anne Veinstein
- Médecine Intensive Réanimation, CHU de Poitiers, Poitiers, France
| | - Benoît Veber
- Réanimation Chirurgicale, CHU de Rouen, Université de Rouen Normandie, Rouen, France
| | | | - Qin Lu
- Multidisciplinary Critical Care Unit, Department of Anaesthesiology and Critical Care Medicine, Pitié-Salpêtrière Hospital, Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Paris, France
| | - Gaetan Beduneau
- Medical Intensive Care Unit, EA 3830, Normandie Université, UNIROUEN, Rouen University Hospital, Rouen, France
| | | | | | - Gaetan Plantefeve
- Réanimation Polyvalente et Unité de Surveillance Continue, CH Victor Dupouy, Argenteuil, France
| | - Mai-Anh Nay
- Médecine Intensive Réanimation, CHR d'Orléans, Orleans, France
| | - Hamid Merdji
- Service de Réanimation, Nouvel Hôpital Civil, Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, Strasbourg, France
| | - Pascal Andreu
- Department of Intensive Care, Lipness Team, INSERM Research Centre LNC-UMR1231, LabExLipSTIC, and INSERM CIC 1432, Clinical Epidemiology, François Mitterrand University Hospital, University of Burgundy, Dijon, France
| | - Laurent Vecellio
- Centre d'Etude des Pathologies Respiratoires, CEPR, INSERM U1100, Faculté de médecine, Université de Tours, Tours, France
| | - Grégoire Muller
- Médecine Intensive Réanimation, CHR d'Orléans, Orleans, France
| | - Maria Cabrera
- Centre d'Etude des Pathologies Respiratoires, CEPR, INSERM U1100, Faculté de médecine, Université de Tours, Tours, France
| | - Deborah Le Pennec
- Centre d'Etude des Pathologies Respiratoires, CEPR, INSERM U1100, Faculté de médecine, Université de Tours, Tours, France
| | - Renaud Respaud
- Pharmacie, Centre d'Etude des Pathologies Respiratoires, CEPR, INSERM U1100, CHRU de Tours, Faculté de médecine, Université de Tours, Tours, France
| | - Philippe Lanotte
- Service de Bactériologie-Virologie, INRAE, ISP, CHRU de Tours, Université de Tours, Tours, France
| | - Nicolas Gregoire
- INSERM UMR S1070, Laboratoire pharmacologie des anti-infectieux; Laboratoire de toxicologie-phamacologie, Université de Poitiers; CHU de Poitiers, Poitiers, France
| | - Marie Leclerc
- Délégation à la Recherche Clinique et à l'Innovation, CHRU Tours, Tours, France
| | - Julie Helms
- Service de Réanimation, Nouvel Hôpital Civil, Université de Strasbourg (UNISTRA), Faculté de Médecine, Hôpitaux universitaires de Strasbourg, Strasbourg, France
| | - Thierry Boulain
- Médecine Intensive Réanimation, CHR d'Orléans, Orleans, France
| | | | - Stephan Ehrmann
- Médecine Intensive Réanimation, CIC 1415, Centre d'Etude des Pathologies Respiratoires, CEPR, INSERM U1100, CHRU de Tours, Faculté de médecine, Université de Tours, Tours, France
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13
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Beauruelle C, Treluyer L, Pastuszka A, Cochard T, Lier C, Mereghetti L, Glaser P, Poyart C, Lanotte P. CRISPR Typing Increases the Discriminatory Power of Streptococcus agalactiae Typing Methods. Front Microbiol 2021; 12:675597. [PMID: 34349737 PMCID: PMC8328194 DOI: 10.3389/fmicb.2021.675597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/15/2021] [Indexed: 11/25/2022] Open
Abstract
We explored the relevance of a Clustered regularly interspaced short palindromic repeats (CRISPR)-based genotyping tool for Streptococcus agalactiae typing and we compared this method to current molecular methods [multi locus sequence typing (MLST) and capsular typing]. To this effect, we developed two CRISPR marker schemes (using 94 or 25 markers, respectively). Among the 255 S. agalactiae isolates tested, 229 CRISPR profiles were obtained. The 94 and 25 markers made it possible to efficiently separate isolates with a high diversity index (0.9947 and 0.9267, respectively), highlighting a high discriminatory power, superior to that of both capsular typing and MLST (diversity index of 0.9017 for MLST). This method has the advantage of being correlated with MLST [through analysis of the terminal direct repeat (TDR) and ancestral spacers] and to possess a high discriminatory power (through analysis of the leader-end spacers recently acquired, which are the witnesses of genetic mobile elements encountered by the bacteria). Furthermore, this “one-shot” approach presents the benefit of much-reduced time and cost in comparison with MLST. On the basis of these data, we propose that this method could become a reference method for group B Streptococcus (GBS) typing.
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Affiliation(s)
- Clémence Beauruelle
- Département de Bactériologie-Virologie, Hygiène Hospitalière et Parasitologie-Mycologie, Centre Hospitalier Régional Universitaire (CHRU) de Brest, Brest, France.,Inserm, EFS, UMR 1078, GGB, Universitè de Bretagne Occidentale, Brest, France
| | - Ludovic Treluyer
- Institut Cochin, Team Bacteria and Perinatality, INSERM U1016, Paris, France
| | - Adeline Pastuszka
- INRAE, ISP, Université de Tours, Tours, France.,Service de Bactériologie-Virologie, CHRU de Tours, Tours, France
| | | | - Clément Lier
- INRAE, ISP, Université de Tours, Tours, France.,Service de Bactériologie-Virologie, CHRU de Tours, Tours, France
| | - Laurent Mereghetti
- INRAE, ISP, Université de Tours, Tours, France.,Service de Bactériologie-Virologie, CHRU de Tours, Tours, France
| | - Philippe Glaser
- Evolution and Ecology of Resistance to Antibiotics (EERA) Unit, Institut Pasteur, Paris, France.,UMR CNRS 3525, Paris, France
| | - Claire Poyart
- Institut Cochin, Team Bacteria and Perinatality, INSERM U1016, Paris, France.,CNRS UMR 8104, Paris Descartes University, Paris, France.,Department of Bacteriology, University Hospitals Paris Centre-Cochin, Assistance Publique-Hôpitaux de Paris, Paris, France
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14
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Pastuszka A, Beauruelle C, Camiade E, Rousseau GM, Moineau S, Mereghetti L, Horvath P, Lanotte P. Functional Study of the Type II-A CRISPR-Cas System of Streptococcus agalactiae Hypervirulent Strains. CRISPR J 2021; 4:233-242. [PMID: 33876956 DOI: 10.1089/crispr.2020.0145] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Nearly all strains of Streptococcus agalactiae, the leading cause of invasive infections in neonates, encode a type II-A clustered regularly interspaced short palindromic repeats (CRISPR)-Cas system. Interestingly, S. agalactiae strains belonging to the hypervirulent Sequence Type 17 (ST17) contain significantly fewer spacers in their CRISPR locus than other lineages, which could be the result of a less functional CRISPR-Cas system. Here, we revealed one large deletion in the ST17 cas promoter region and we evaluated its impact on the transcription of cas genes as well as the functionalities of the CRISPR-Cas system. We demonstrated that Cas9 interference is functional and that the CRISPR-Cas system of ST17 strains can still acquire new spacers, despite the absence of a regular cas promoter. We demonstrated that a promoter sequence upstream of srn036, a small RNA partially overlapping the antisense tracrRNA, is responsible for the ST17 CRISPR-Cas adaptation and interference activities.
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Affiliation(s)
- Adeline Pastuszka
- ISP, Université de Tours, INRAE, Tours, France; Dangé-Saint-Romain, France.,Service de Bactériologie-Virologie-Hygiène Hospitalière, CHRU de Tours, Tours, France; Dangé-Saint-Romain, France
| | - Clémence Beauruelle
- Département de Bactériologie-Virologie, Hygiène Hospitalière et Parasitologie-Mycologie, Centre Hospitalier Régional Universitaire (CHRU) de Brest, Brest, France; Dangé-Saint-Romain, France.,Univ Brest, Inserm, EFS, UMR 1078, GGB, Brest, France; Dangé-Saint-Romain, France
| | - Emilie Camiade
- ISP, Université de Tours, INRAE, Tours, France; Dangé-Saint-Romain, France
| | - Geneviève M Rousseau
- Département de Biochimie, de Microbiologie, et de Bio-informatique, Faculté des Sciences et de Génie, Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec City, Canada; Dangé-Saint-Romain, France
| | - Sylvain Moineau
- Département de Biochimie, de Microbiologie, et de Bio-informatique, Faculté des Sciences et de Génie, Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec City, Canada; Dangé-Saint-Romain, France.,Félix d'Hérelle Reference Center for Bacterial Viruses, Université Laval, Québec City, Canada; and Dangé-Saint-Romain, France
| | - Laurent Mereghetti
- ISP, Université de Tours, INRAE, Tours, France; Dangé-Saint-Romain, France.,Service de Bactériologie-Virologie-Hygiène Hospitalière, CHRU de Tours, Tours, France; Dangé-Saint-Romain, France
| | | | - Philippe Lanotte
- ISP, Université de Tours, INRAE, Tours, France; Dangé-Saint-Romain, France.,Service de Bactériologie-Virologie-Hygiène Hospitalière, CHRU de Tours, Tours, France; Dangé-Saint-Romain, France
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15
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Bernard L, Desoubeaux G, Bodier-Montagutelli E, Pardessus J, Brea D, Allimonnier L, Eymieux S, Raynal PI, Vasseur V, Vecellio L, Mathé L, Guillon A, Lanotte P, Pourchez J, Verhoeven PO, Esnouf S, Ferry M, Eterradossi N, Blanchard Y, Brown P, Roingeard P, Alcaraz JP, Cinquin P, Si-Tahar M, Heuzé-Vourc'h N. Controlled Heat and Humidity-Based Treatment for the Reuse of Personal Protective Equipment: A Pragmatic Proof-of-Concept to Address the Mass Shortage of Surgical Masks and N95/FFP2 Respirators and to Prevent the SARS-CoV2 Transmission. Front Med (Lausanne) 2020; 7:584036. [PMID: 33195335 PMCID: PMC7607499 DOI: 10.3389/fmed.2020.584036] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/03/2020] [Indexed: 12/15/2022] Open
Abstract
Background: The coronavirus infectious disease-2019 (COVID-19) pandemic has led to an unprecedented shortage of healthcare resources, primarily personal protective equipment like surgical masks, and N95/filtering face piece type 2 (FFP2) respirators. Objective: Reuse of surgical masks and N95/FFP2 respirators may circumvent the supply chain constraints and thus overcome mass shortage. Methods, design, setting, and measurement: Herein, we tested the effects of dry- and moist-air controlled heating treatment on structure and chemical integrity, decontamination yield, and filtration performance of surgical masks and FFP2 respirators. Results: We found that treatment in a climate chamber at 70°C during 1 h with 75% humidity rate was adequate for enabling substantial decontamination of both respiratory viruses, oropharyngeal bacteria, and model animal coronaviuses, while maintaining a satisfying filtering capacity. Limitations: Further studies are now required to confirm the feasibility of the whole process during routine practice. Conclusion: Our findings provide compelling evidence for the recycling of pre-used surgical masks and N95/FFP2 respirators in case of imminent mass shortfall.
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Affiliation(s)
- Louis Bernard
- Médecine interne et maladies infectieuses, CHU de Tours, Tours, France.,Université de Tours, Tours, France
| | - Guillaume Desoubeaux
- Université de Tours, Tours, France.,Parasitologie-mycologie-médecine tropicale, CHU de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Elsa Bodier-Montagutelli
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France.,Pharmacie à usage intérieure, CHU de Tours, Tours, France
| | - Jeoffrey Pardessus
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Déborah Brea
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Laurine Allimonnier
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Sébastien Eymieux
- Université de Tours, Tours, France.,Biologie cellulaire-Microscopie électronique, CHU de Tours, Tours, France.,UMR Inserm U1259-Morphogénèse et antigénicité du VIH et des virus des hépatites, Tours, France
| | - Pierre-Ivan Raynal
- Université de Tours, Tours, France.,Biologie cellulaire-Microscopie électronique, CHU de Tours, Tours, France
| | - Virginie Vasseur
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Laurent Vecellio
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Ludovic Mathé
- Blanchisserie centrale GCS NOT, CHU de Tours, Tours, France
| | - Antoine Guillon
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France.,Médecine intensive-Réanimation, CHU de Tours et Université de Tours, Tours, France
| | - Philippe Lanotte
- Université de Tours, Tours, France.,Bactériologie-Virologie-Hygiène hospitalière, CHU de Tours, Tours, France.,ISP Equipe 5-Bactéries et Risque Materno-fœtale, INRAE, Nouzilly, France
| | - Jérémie Pourchez
- Mines Saint-Etienne, Université Jean Monnet, INSERM, U 1059 Sainbiose, Centre CIS, Saint-Etienne, France
| | - Paul O Verhoeven
- GIMAP, EA 3064, Université Jean Monnet, Université de Lyon, Saint-Etienne, France.,Service des Agents Infectieux et d'Hygiène, CHU de St-Etienne, Saint-Etienne, France
| | - Stéphane Esnouf
- Service d'Étude du Comportement des Radionucléides (SECR), CEA, Université Paris Saclay, Gif-sur-Yvette, France
| | - Muriel Ferry
- Service d'Étude du Comportement des Radionucléides (SECR), CEA, Université Paris Saclay, Gif-sur-Yvette, France
| | - Nicolas Eterradossi
- French Agency for Food Environmental and Occupational Health Safety (Anses), Ploufragan, France
| | - Yannick Blanchard
- French Agency for Food Environmental and Occupational Health Safety (Anses), Ploufragan, France
| | - Paul Brown
- French Agency for Food Environmental and Occupational Health Safety (Anses), Ploufragan, France
| | - Philippe Roingeard
- Université de Tours, Tours, France.,Biologie cellulaire-Microscopie électronique, CHU de Tours, Tours, France.,UMR Inserm U1259-Morphogénèse et antigénicité du VIH et des virus des hépatites, Tours, France
| | | | - Philippe Cinquin
- TIMC-IMAG, UMR5525 Univ. Grenoble Alpes-CNRS, La Tronche, France.,CIC-IT1406 INSERM/CHU Grenoble Alpes/Univ. Grenoble Alpes, La Tronche, France
| | - Mustapha Si-Tahar
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
| | - Nathalie Heuzé-Vourc'h
- Université de Tours, Tours, France.,Inserm U1100, Centre d'étude des pathologies respiratoires (CEPR), Tours, France
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16
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Guillouzouic A, Andrejak C, Peuchant O, Hery-Arnaud G, Hamdad F, Lanotte P, Gaborit B, Bernard L, Bémer P. Treatment of Bone and Joint Tuberculosis in France: A Multicentre Retrospective Study. J Clin Med 2020; 9:jcm9082529. [PMID: 32764500 PMCID: PMC7464673 DOI: 10.3390/jcm9082529] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/29/2020] [Accepted: 08/04/2020] [Indexed: 12/18/2022] Open
Abstract
Background: Nine percent of all cases of tuberculosis are bone and joint tuberculosis (BJTB). BJTB occurs in two main forms: spinal (STB) and extraspinal (ESTB). The aim of this study was to compare STB with ESTB in terms of diagnosis, treatment and outcomes. Methods: We collected demographic, clinical, microbiological, treatment duration and outcome data for patients with BJTB in a retrospective multicentre study over a 17-year period. Results: Of the 116 patients included in the study, 69 (59.5%) had STB and 47 (40.5%) had ESTB. The median age was higher in the ESTB group. There were significantly more foreign-born patients in the STB group. The median time for diagnosis was longer for ESTB (6 months) than STB (4 months) (p = 0.017). Magnetic resonance imaging was highly reliable for the diagnosis. Direct examination and histology allowed the diagnosis to be made in more than 80% of cases. The median treatment duration of 12 months, regardless of the type of BJTB, was longer than recommended. A favourable outcome was achieved in 91.9% of cases. Conclusion: The management of BJTB remains challenging. An earlier diagnosis should be more effective, reducing the total duration of treatment and leading to better tolerance.
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Affiliation(s)
- Aurélie Guillouzouic
- Department of Bacteriology, Nantes University Hospital, 1 Place Alexis Ricordeau, 44095 Nantes, France;
- Correspondence: ; Tel.: +33-(0)2-4008-4188
| | - Claire Andrejak
- Respiratory Department, Amiens University Hospital, 80000 Amiens, France;
| | - Olivia Peuchant
- Department of Bacteriology, Bordeaux University Hospital, 33000 Bordeaux, France;
| | - Geneviève Hery-Arnaud
- Department of Bacteriology, Brest University Hospital, 2 Avenue Foch, 29200 Brest, France;
| | - Farida Hamdad
- Department of Bacteriology, Amiens University Hospital, 80000 Amiens, France;
| | - Philippe Lanotte
- Department of Bacteriology, Tours University Hospital, 2 Allee Gaston Pages, 37081 Tours, France;
| | - Benjamin Gaborit
- Infectious Disease Department, Nantes University Hospital, 1 Place Alexis Ricordeau, 44095 Nantes, France;
| | - Louis Bernard
- Infectious Disease Department, Tours University Hospital, 2 Allee Gaston Pages, 37081 Tours, France;
| | - Pascale Bémer
- Department of Bacteriology, Nantes University Hospital, 1 Place Alexis Ricordeau, 44095 Nantes, France;
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17
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Lhommet C, Garot D, Grammatico-Guillon L, Jourdannaud C, Asfar P, Faisy C, Muller G, Barker KA, Mercier E, Robert S, Lanotte P, Goudeau A, Blasco H, Guillon A. Predicting the microbial cause of community-acquired pneumonia: can physicians or a data-driven method differentiate viral from bacterial pneumonia at patient presentation? BMC Pulm Med 2020; 20:62. [PMID: 32143620 PMCID: PMC7060632 DOI: 10.1186/s12890-020-1089-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 02/17/2020] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Community-acquired pneumonia (CAP) requires urgent and specific antimicrobial therapy. However, the causal pathogen is typically unknown at the point when anti-infective therapeutics must be initiated. Physicians synthesize information from diverse data streams to make appropriate decisions. Artificial intelligence (AI) excels at finding complex relationships in large volumes of data. We aimed to evaluate the abilities of experienced physicians and AI to answer this question at patient admission: is it a viral or a bacterial pneumonia? METHODS We included patients hospitalized for CAP and recorded all data available in the first 3-h period of care (clinical, biological and radiological information). For this proof-of-concept investigation, we decided to study only CAP caused by a singular and identified pathogen. We built a machine learning model prediction using all collected data. Finally, an independent validation set of samples was used to test the pathogen prediction performance of: (i) a panel of three experts and (ii) the AI algorithm. Both were blinded regarding the final microbial diagnosis. Positive likelihood ratio (LR) values > 10 and negative LR values < 0.1 were considered clinically relevant. RESULTS We included 153 patients with CAP (70.6% men; 62 [51-73] years old; mean SAPSII, 37 [27-47]), 37% had viral pneumonia, 24% had bacterial pneumonia, 20% had a co-infection and 19% had no identified respiratory pathogen. We performed the analysis on 93 patients as co-pathogen and no-pathogen cases were excluded. The discriminant abilities of the AI approach were low to moderate (LR+ = 2.12 for viral and 6.29 for bacterial pneumonia), and the discriminant abilities of the experts were very low to low (LR+ = 3.81 for viral and 1.89 for bacterial pneumonia). CONCLUSION Neither experts nor an AI algorithm can predict the microbial etiology of CAP within the first hours of hospitalization when there is an urgent need to define the anti-infective therapeutic strategy.
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Affiliation(s)
- Claire Lhommet
- CHRU Tours, Service de Médecine Intensive Réanimation, 2 Bd Tonnellé, F-37044, Tours Cedex 9, France
| | - Denis Garot
- CHRU Tours, Service de Médecine Intensive Réanimation, 2 Bd Tonnellé, F-37044, Tours Cedex 9, France
| | - Leslie Grammatico-Guillon
- CHRU Tours, Service d'Information Médicale, d'Epidémiologie et d'Economie de la Santé, Tours, France
| | | | - Pierre Asfar
- CHRU Angers, Service médecine intensive et réanimation, Angers, France
| | - Christophe Faisy
- UPRES EA220, Laboratoire de recherche en pharmacologie respiratoire, Université Versailles Saint-Quentin, Suresnes, France
| | - Grégoire Muller
- CHR Orléans, Service de Médecine Intensive Réanimation, Orléans, France
| | - Kimberly A Barker
- Pulmonary Center, Boston University School of Medicine, Boston, MA, USA
| | - Emmanuelle Mercier
- CHRU Tours, Service de Médecine Intensive Réanimation, 2 Bd Tonnellé, F-37044, Tours Cedex 9, France
| | - Sylvie Robert
- CHRU Tours, Service de bactériologie, virologie et hygiène hospitalière, Tours, France
| | - Philippe Lanotte
- CHRU Tours, Service de bactériologie, virologie et hygiène hospitalière, Tours, France
| | - Alain Goudeau
- CHRU Tours, Service de bactériologie, virologie et hygiène hospitalière, Tours, France
| | - Helene Blasco
- CHRU Tours, Laboratoire de Biochimie et Biologie Moléculaire, Tours, France.,INSERM U 930, Université de Tours, Tours, France
| | - Antoine Guillon
- CHRU Tours, Service de Médecine Intensive Réanimation, 2 Bd Tonnellé, F-37044, Tours Cedex 9, France. .,INSERM, centre d'étude des pathologies respiratoires (CEPR), U1100, Université de Tours, Tours, France.
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18
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Danis K, Varon E, Lepoutre A, Janssen C, Forestier E, Epaulard O, N'guyen Y, Labrunie A, Lanotte P, Gravet A, Pelloux I, Chavanet P, Levy-Bruhl D, Ploy MC, Gaillat J. Factors Associated With Severe Nonmeningitis Invasive Pneumococcal Disease in Adults in France. Open Forum Infect Dis 2019; 6:ofz510. [PMID: 31868865 PMCID: PMC6918451 DOI: 10.1093/ofid/ofz510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/28/2019] [Indexed: 11/14/2022] Open
Abstract
Background In France, pneumococcal vaccination in adults is recommended for risk groups (chronic conditions/immunosuppression). We conducted a study on invasive pneumococcal disease (IPD) in adults to identify factors associated with disease severity and death. Methods We included IPD cases, excluding meningitis, from 25 acute care hospitals in 6 regions. We defined severe cases as those with shock or severe sepsis or intensive care unit admission/mechanical ventilation. We included deaths occurring within 30 days of hospitalization. Infectious disease specialists collected clinical/microbiological data on cases. Results During 2014–2017, 908 nonmeningitis IPD cases were diagnosed; 48% were severe, 84% had comorbidities, 21% died. Ninety percent of cases with comorbidities who previously sought health care were not vaccinated against pneumococcus. Compared with previously healthy cases, the risk of severe IPD increased from 20% (adjusted risk ratio [aRR], 1.2; 95% confidence interval [CI], 1.0–1.4) in cases with 1–2 chronic diseases to 30% (aRR, 1.3; 95% CI, 1.0–7.0) in those with >2 chronic diseases. Among risk groups, 13-valent pneumococcal conjugate vaccine (PCV13) serotypes and 23-valent pneumococcal polysaccharide vaccine (PPSV23) nonPCV13 serotypes were more likely to induce severe IPD compared with nonvaccine serotypes (aRR, 1.5; 95% CI, 1.3–1.9; aRR, 1.3; 95% CI, 1.0–1.5, respectively). Conclusions We observed a cumulative effect of concurrent comorbidities on severe IPD. Vaccine serotypes were more likely to induce severe IPD among risk groups. The missed opportunities for vaccination underscore the need to enhance vaccination in risk groups.
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Affiliation(s)
- Kostas Danis
- Santé Publique France (SpFrance), the French National Public Health Agency, Saint-Maurice, France
| | - Emmanuelle Varon
- National Centre for Pneumococci, Centre Hospitalier Intercommunal Créteil, Créteil, France
| | - Agnès Lepoutre
- Santé Publique France (SpFrance), the French National Public Health Agency, Saint-Maurice, France
| | | | | | | | | | - Anaïs Labrunie
- University Hospital Centre Limoges, Regional Observatories for Pneumococci (Observatoires Régionaux du Pneumocoque), Limoges, France.,University Hospital Centre Limoges, CEBIMER, Limoges, France
| | | | - Alain Gravet
- Hospital Emile Müller Mulhouse, Mullhouse, France
| | | | | | - Daniel Levy-Bruhl
- Santé Publique France (SpFrance), the French National Public Health Agency, Saint-Maurice, France
| | - Marie-Cecile Ploy
- University Hospital Centre Limoges, Regional Observatories for Pneumococci (Observatoires Régionaux du Pneumocoque), Limoges, France.,University Limoges, INSERM, CHU Limoges, RESINFIT, , Limoges, France
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19
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Morello E, Pérez-Berezo T, Boisseau C, Baranek T, Guillon A, Bréa D, Lanotte P, Carpena X, Pietrancosta N, Hervé V, Ramphal R, Cenac N, Si-Tahar M. Pseudomonas aeruginosa Lipoxygenase LoxA Contributes to Lung Infection by Altering the Host Immune Lipid Signaling. Front Microbiol 2019; 10:1826. [PMID: 31474948 PMCID: PMC6702342 DOI: 10.3389/fmicb.2019.01826] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 07/24/2019] [Indexed: 01/17/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic bacteria and a major cause of nosocomial pneumonia. P. aeruginosa has many virulence factors contributing to its ability to colonize the host. LoxA is a lipoxygenase enzyme secreted by P. aeruginosa that oxidizes polyunsaturated fatty acids. Based on previous in vitro biochemical studies, several biological roles of LoxA have been hypothesized, including interference of the host lipid signaling, and modulation of bacterial invasion properties. However, the contribution of LoxA to P. aeruginosa lung pathogenesis per se remained unclear. In this study, we used complementary in vitro and in vivo approaches, clinical strains of P. aeruginosa as well as lipidomics technology to investigate the role of LoxA in lung infection. We found that several P. aeruginosa clinical isolates express LoxA. When secreted in the lungs, LoxA processes a wide range of host polyunsaturated fatty acids, which further results in the production of bioactive lipid mediators (including lipoxin A4). LoxA also inhibits the expression of major chemokines (e.g., MIPs and KC) and the recruitment of key leukocytes. Remarkably, LoxA promotes P. aeruginosa persistence in lungs tissues. Hence, our study suggests that LoxA-dependent interference of the host lipid pathways may contribute to P. aeruginosa lung pathogenesis.
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Affiliation(s)
- Eric Morello
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Teresa Pérez-Berezo
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, Ecole Nationale Vétérinaire de Toulouse, Toulouse, France
| | - Chloé Boisseau
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Thomas Baranek
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Antoine Guillon
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Déborah Bréa
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Philippe Lanotte
- CHRU de Tours, Service de Bactériologie-Virologie, Tours, France.,Université de Tours, UMR1282 ISP, Faculté de Médecine, Equipe Bactéries et Risque Materno-Foetal, Tours, France
| | - Xavier Carpena
- Institut de Biologia Molecular de Barcelona, Parc Científic de Barcelona, Barcelona, Spain.,XALOC Beamline, ALBA Synchrotron, Cerdanyola del Vallès, Spain
| | - Nicolas Pietrancosta
- Plateau 2MI, CNRS UMR8601, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre Universitaire des Saints-Pères, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Virginie Hervé
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Reuben Ramphal
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France.,Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Nicolas Cenac
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, Ecole Nationale Vétérinaire de Toulouse, Toulouse, France
| | - Mustapha Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
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20
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Alari A, Cheysson F, Le Fouler L, Lanotte P, Varon E, Opatowski L, Guillemot D, Watier L. Association of Pneumococcal Conjugate Vaccine Coverage With Pneumococcal Meningitis: An Analysis of French Administrative Areas, 2001-2016. Am J Epidemiol 2019; 188:1466-1474. [PMID: 31197305 PMCID: PMC6670069 DOI: 10.1093/aje/kwz071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 03/08/2019] [Accepted: 03/12/2019] [Indexed: 11/13/2022] Open
Abstract
Geographic variations of invasive pneumococcal disease incidence and serotype distributions were observed after pneumococcal conjugate vaccine introduction at regional levels and among French administrative areas. The variations could be related to regional vaccine coverage (VC) variations that might have direct consequences for vaccination-policy impact on invasive pneumococcal disease, particularly pneumococcal meningitis (PM) incidence. We assessed vaccine impact from 2001 to 2016 in France by estimating the contribution of regional VC differences to variations of annual local PM incidence. Using a mixed-effect Poisson model, we showed that, despite some variations of VC among administrative areas, vaccine impact on vaccine-serotype PM was homogeneously confirmed among administrative areas. Compared with the prevaccine era, the cumulative VC impact on vaccine serotypes led, in 2016, to PM reductions ranging among regions from 87% (25th percentile) to 91% (75th percentile) for 7-valent pneumococcal conjugate vaccine serotypes and from 58% to 63% for the 6 additional 13-valent pneumococcal conjugate vaccine serotypes. Nonvaccine-serotype PM increases from the prevaccine era ranged among areas from 98% to 127%. By taking into account the cumulative impact of growing VC and VC differences, our analyses confirmed high vaccine impact on vaccine-serotype PM case rates and suggest that VC variations cannot explain PM administrative area differences.
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Affiliation(s)
- Anna Alari
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1181, Université Versailles St-Quentin-en-Yvelines, Institut Pasteur, Paris, France
- Université Versailles St-Quentin-en-Yvelines, Université Paris-Saclay, Versailles, France
| | - Félix Cheysson
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1181, Université Versailles St-Quentin-en-Yvelines, Institut Pasteur, Paris, France
- Université Paris Sud, Université Paris-Saclay, Le Kremlin Bicêtre, France
| | | | - Philippe Lanotte
- Observatoires Régionaux du Pneumocoque, Service de Bactériologie-Virologie-Hygiène Hospitalière Hôpital Bretonneau, Tours, France
| | - Emmanuelle Varon
- Centre National de Référence des Pneumocoques, Centre Hospitalier Intercommunal, Créteil, France
| | - Lulla Opatowski
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1181, Université Versailles St-Quentin-en-Yvelines, Institut Pasteur, Paris, France
| | - Didier Guillemot
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1181, Université Versailles St-Quentin-en-Yvelines, Institut Pasteur, Paris, France
- Assistance Publique, Hôpitaux de Paris, Hôpital Raymond-Poincaré, Unité Fonctionnelle de Santé Publique, Garches, France
| | - Laurence Watier
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1181, Université Versailles St-Quentin-en-Yvelines, Institut Pasteur, Paris, France
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Gras E, Bailly E, Le Brun C, Lemaignen A, Lanotte P. Borrelia crocidurae tick-borne relapsing fever upon return from Senegal. Med Mal Infect 2019; 49:624-625. [PMID: 31202618 DOI: 10.1016/j.medmal.2019.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 12/22/2018] [Accepted: 05/21/2019] [Indexed: 11/16/2022]
Affiliation(s)
- E Gras
- Service de bactériologie-virologie-hygiène hospitalière, hôpital Bretonneau, CHRU de Tours, 2 boulevard Tonnellé, 37044 Tours, France
| | - E Bailly
- Service de parasitologie-mycologie, hôpital Bretonneau, CHRU de Tours, 2 boulevard Tonnellé, 37044 Tours, France
| | - C Le Brun
- Service de bactériologie-virologie-hygiène hospitalière, hôpital Bretonneau, CHRU de Tours, 2 boulevard Tonnellé, 37044 Tours, France
| | - A Lemaignen
- Service de médecine interne et maladies infectieuses, Hôpital Bretonneau, CHRU de Tours, 2 boulevard Tonnellé, 37044 Tours, France
| | - P Lanotte
- Service de bactériologie-virologie-hygiène hospitalière, hôpital Bretonneau, CHRU de Tours, 2 boulevard Tonnellé, 37044 Tours, France; Infectiologie et santé publique, INRA, université de Tours, UMR1282, 37380 Nouzilly, France.
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22
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Guillon A, Darrouzain F, Heuzé-Vourc'h N, Petitcollin A, Barc C, Vecellio L, Cormier B, Lanotte P, Sarradin P, Dequin PF, Paintaud G, Ehrmann S. Intra-tracheal amikacin spray delivery in healthy mechanically ventilated piglets. Pulm Pharmacol Ther 2019; 57:101807. [PMID: 31102741 DOI: 10.1016/j.pupt.2019.101807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 04/12/2019] [Accepted: 05/14/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Nebulization during mechanical ventilation is impeded by large extra-pulmonary drug deposition and long administration durations which currently limit implementation of inhaled antibiotic therapy. Direct intra-tracheal delivery using a sprayer represents an appealing alternative investigated in small animal models, but large animal data are lacking. METHODS Amikacin was administered through intravenous infusion (20 mg/kg), nebulization (60 mg/kg) and direct intra-tracheal spray (30 mg/kg) to 10 intubated piglets, in a randomized cross-over design. Amikacin concentrations were measured in the serum and pulmonary parenchyma. Anatomic deposition was investigated using immuno-histochemistry. RESULTS Spray delivery resulted in higher amikacin outputs than nebulization and infusion. Pulmonary inhaled delivery techniques yielded much higher lung concentrations and much lower serum concentrations than intravenous infusion. However, unlike nebulization and infusion, intra-tracheal spray delivery was associated with more than 100- and 1000-fold variability in lung concentrations between and within animals. Amikacin specific immuno-histochemistry showed consistent bronchial and alveolar drug deposition with all modalities. CONCLUSION Nebulization remains the most reliable and simple technique to deliver inhaled amikacin uniformly to the lung during mechanical ventilation. Further development of tracheal sprays is required to take advantage of potential benefits related to high drug output and low extra-pulmonary deposition in large animals.
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Affiliation(s)
- Antoine Guillon
- CHRU de Tours, Médecine Intensive Réanimation, INSERM CIC 1415, CRICS-Triggersep, Tours, France; Université de Tours, INSERM, Centre d'étude des pathologies respiratoires (CEPR), UMR 1100, Tours, France
| | | | - Nathalie Heuzé-Vourc'h
- Université de Tours, INSERM, Centre d'étude des pathologies respiratoires (CEPR), UMR 1100, Tours, France
| | | | - Céline Barc
- INRA Val de Loire, Plateforme d'infectiologie expérimentale, UE 1277, Nouzilly, France
| | - Laurent Vecellio
- Université de Tours, INSERM, Centre d'étude des pathologies respiratoires (CEPR), UMR 1100, Tours, France
| | | | - Philippe Lanotte
- CHRU de Tours, Bactériologie-Virologie, Tours, France; ISP, INRA, Université de Tours, UMR1282, F-37380, Nouzilly, France
| | - Pierre Sarradin
- INRA Val de Loire, Plateforme d'infectiologie expérimentale, UE 1277, Nouzilly, France
| | - Pierre-François Dequin
- CHRU de Tours, Médecine Intensive Réanimation, INSERM CIC 1415, CRICS-Triggersep, Tours, France; Université de Tours, INSERM, Centre d'étude des pathologies respiratoires (CEPR), UMR 1100, Tours, France
| | | | - Stephan Ehrmann
- CHRU de Tours, Médecine Intensive Réanimation, INSERM CIC 1415, CRICS-Triggersep, Tours, France; Université de Tours, INSERM, Centre d'étude des pathologies respiratoires (CEPR), UMR 1100, Tours, France.
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Daudu D, Kisiala A, Werner Ribeiro C, Mélin C, Perrot L, Clastre M, Courdavault V, Papon N, Oudin A, Courtois M, Dugé de Bernonville T, Gaucher M, Degrave A, Lanoue A, Lanotte P, Schouler C, Brisset MN, Emery RN, Pichon O, Carpin S, Giglioli-Guivarc’h N, Crèche J, Besseau S, Glévarec G. Setting-up a fast and reliable cytokinin biosensor based on a plant histidine kinase receptor expressed in Saccharomyces cerevisiae. J Biotechnol 2019; 289:103-111. [DOI: 10.1016/j.jbiotec.2018.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 12/21/2022]
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24
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Balavoine C, Andrejak C, Blanc F, Meurice J, Lanotte P, Marchand-Adam S. Effets indésirables du traitement antibiotique des infections pulmonaires à mycobactéries atypiques : sont-ils vraiment importants ? Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Balavoine C, Lanotte P, Campana M, Ghanem M, Marchand-Adam S. [Hypersensitivity pneumonitis and abscess reaction to nontuberculous mycobacteria acquired form jacuzzi aerosol]. Rev Mal Respir 2018; 36:57-62. [PMID: 30573310 DOI: 10.1016/j.rmr.2017.10.670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/25/2017] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Mycobacterium avium complex can be responsible for a number of different radio-clinical presentations, ranging from invasive infections to hypersensitivity pneumonitis due to repeated inhalation of antigens. The diagnosis of hypersensitivity pneumonitis is clinical, radiological, biological and microbiological. CASE REPORT A 61-year-old male developed a hypersensitivity pneumonitis reaction to non-tuberculous mycobacteria, following the repeated use of his own spa, which later evolved into chronic respiratory failure. The diagnosis was made via an environmental analysis. Immunosuppressive treatment comprising corticosteroids and methotrexate led to moderate improvement, but may also have been responsible for the development of a M. intracellulare abscess. Despite 12 months of well-conducted antibiotic treatment, the evolution was unfavourable, with a relapse of a M. intracellulare infection three months after the end of treatment, followed by the patient's death. CONCLUSION Hypersensitivity pneumonitis reaction to non-tuberculous mycobacteria should be considered in patients who have their own spa. In the absence of microbiological identification, environmental analysis may guide the diagnosis. A fatal evolution of PHS is infrequent but prognosis may depend on the degree of associated fibrosis.
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Affiliation(s)
- C Balavoine
- Service de pneumologie, centre hospitalier universitaire de Tours, 37000 Tours, France.
| | - P Lanotte
- Équipe « bactéries et risque materno-foetal », UMR1282 infectiologie et santé publique, université François Rabelais, Inra, 37000 Tours, France; Service de bactériologie-virologie-hygiène, centre hospitalier universitaire de Tours, 37000 Tours, France
| | - M Campana
- Service de pneumologie, centre hospitalier universitaire de Tours, 37000 Tours, France
| | - M Ghanem
- Service de pneumologie, centre hospitalier universitaire de Tours, 37000 Tours, France
| | - S Marchand-Adam
- Université François Rabelais, Inserm U1100, faculté de médecine de Tours, 37000 Tours, France
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Ventéjou S, Genet T, Leducq S, Lanotte P, Zilliox L, Bernard L, Lenormand C, Samimi M. Fibrillation auriculaire révélant une myocardite : une manifestation exceptionnelle de la maladie de Lyme disséminée précoce. Ann Dermatol Venereol 2018. [DOI: 10.1016/j.annder.2018.09.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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De Kyvon MA, Carvalho-Schneider C, Lemaignen A, Dussart D, Barbaz M, Barbe PG, Lanotte P, Bernard L, Bailly É, Chandenier J, Desoubeaux G. A "Kelp-Like" Microorganism Within the Belly. Clin Infect Dis 2018; 67:1463-1466. [PMID: 30321356 DOI: 10.1093/cid/ciy112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | | | - David Dussart
- Chirurgie digestive, Transplantation hépatique, Tours, France
| | | | | | - Philippe Lanotte
- Service de Bactériologie-Virologie, CHU de Tours, France.,UMR ISP1282 INRA Université de Tours, France
| | - Louis Bernard
- Médecine interne & Maladies infectieuses, Tours, France
| | - Éric Bailly
- Parasitologie, Mycologie, Médecine tropicale, Tours, France
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Epaulard O, Chavanet P, Lanotte P, Launay O, Lévy-bruhl D, Mootien J, Ploy M, Strady C, Gaillat J, Varon E. La vaccination anti-pneumococcique est insuffisamment réalisée chez les patients à risque : à propos de 693 cas d’infections invasives à pneumocoque. Med Mal Infect 2018. [DOI: 10.1016/j.medmal.2018.04.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Beauruelle C, Pastuszka A, Mereghetti L, Lanotte P. Group B Streptococcus Vaginal Carriage in Pregnant Women as Deciphered by Clustered Regularly Interspaced Short Palindromic Repeat Analysis. J Clin Microbiol 2018; 56:e01949-17. [PMID: 29618502 PMCID: PMC5971545 DOI: 10.1128/jcm.01949-17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/28/2018] [Indexed: 11/20/2022] Open
Abstract
We evaluated the diversity of group B Streptococcus (GBS) vaginal carriage populations in pregnant women. For this purpose, we studied each isolate present in a primary culture of a vaginal swab using a new approach based on clustered regularly interspaced short palindromic repeats (CRISPR) locus analysis. To evaluate the CRISPR array composition rapidly, a restriction fragment length polymorphism (RFLP) analysis was performed. For each different pattern observed, the CRISPR array was sequenced and capsular typing and multilocus sequence typing (MLST) were performed. A total of 970 isolates from 10 women were analyzed by CRISPR-RFLP. Each woman carrying GBS isolates presented one to five specific "personal" patterns. Five women showed similar isolates with specific and unique restriction patterns, suggesting the carriage of a single GBS clone. Different patterns were observed among isolates from the other five women. For three of these, CRISPR locus sequencing highlighted low levels of internal modifications in the locus backbone, whereas there were high levels of modifications for the last two women, suggesting the carriage of two different clones. These two clones were closely related, having the same ancestral spacer(s), the same capsular type and, in one case, the same ST, but showed different antibiotic resistance patterns in pairs. Eight of 10 women were colonized by a single GBS clone, while two of them were colonized by two strains, leading to a risk of selection of more-virulent and/or more-resistant clones during antibiotic prophylaxis. This CRISPR analysis made it possible to separate isolates belonging to a single capsular type and sequence type, highlighting the greater discriminating power of this approach.
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Affiliation(s)
- Clemence Beauruelle
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France
- INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France
- CHRU de Tours, Service de Bactériologie-Virologie, Tours, France
| | - Adeline Pastuszka
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France
- INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France
- CHRU de Tours, Service de Bactériologie-Virologie, Tours, France
| | - Laurent Mereghetti
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France
- INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France
- CHRU de Tours, Service de Bactériologie-Virologie, Tours, France
| | - Philippe Lanotte
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France
- INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France
- CHRU de Tours, Service de Bactériologie-Virologie, Tours, France
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Devaux L, Sleiman D, Mazzuoli MV, Gominet M, Lanotte P, Trieu-Cuot P, Kaminski PA, Firon A. Cyclic di-AMP regulation of osmotic homeostasis is essential in Group B Streptococcus. PLoS Genet 2018; 14:e1007342. [PMID: 29659565 PMCID: PMC5919688 DOI: 10.1371/journal.pgen.1007342] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/26/2018] [Accepted: 03/28/2018] [Indexed: 02/03/2023] Open
Abstract
Cyclic nucleotides are universally used as secondary messengers to control cellular physiology. Among these signalling molecules, cyclic di-adenosine monophosphate (c-di-AMP) is a specific bacterial second messenger recognized by host cells during infections and its synthesis is assumed to be necessary for bacterial growth by controlling a conserved and essential cellular function. In this study, we sought to identify the main c-di-AMP dependent pathway in Streptococcus agalactiae, the etiological agent of neonatal septicaemia and meningitis. By conditionally inactivating dacA, the only diadenyate cyclase gene, we confirm that c-di-AMP synthesis is essential in standard growth conditions. However, c-di-AMP synthesis becomes rapidly dispensable due to the accumulation of compensatory mutations. We identified several mutations restoring the viability of a ΔdacA mutant, in particular a loss-of-function mutation in the osmoprotectant transporter BusAB. Identification of c-di-AMP binding proteins revealed a conserved set of potassium and osmolyte transporters, as well as the BusR transcriptional factor. We showed that BusR negatively regulates busAB transcription by direct binding to the busAB promoter. Loss of BusR repression leads to a toxic busAB expression in absence of c-di-AMP if osmoprotectants, such as glycine betaine, are present in the medium. In contrast, deletion of the gdpP c-di-AMP phosphodiesterase leads to hyperosmotic susceptibility, a phenotype dependent on a functional BusR. Taken together, we demonstrate that c-di-AMP is essential for osmotic homeostasis and that the predominant mechanism is dependent on the c-di-AMP binding transcriptional factor BusR. The regulation of osmotic homeostasis is likely the conserved and essential function of c-di-AMP, but each species has evolved specific c-di-AMP mechanisms of osmoregulation to adapt to its environment. Nucleotide-based second messengers play central functions in bacterial physiology and host-pathogen interactions. Among these signalling nucleotides, cyclic-di-AMP (c-di-AMP) synthesis was originally assumed to be essential for bacterial growth. In this study, we confirmed that the only di-adenylate cyclase enzyme in the opportunistic pathogen Streptococcus agalactiae is essential in standard growth conditions. However, c-di-AMP synthesis becomes rapidly dispensable by accumulating spontaneous mutations in genes involved in osmotic regulation. We identified that c-di-AMP binds directly to four proteins necessary to maintain osmotic homeostasis, including three osmolyte transporters and the BusR transcriptional factor. We demonstrated that BusR negatively controls the expression of the busAB operon and that it is the main component leading to growth inhibition in the absence of c-di-AMP synthesis if osmoprotectants are present in the environment. Overall, c-di-AMP is essential to maintain osmotic homeostasis by coordinating osmolyte uptake and thus bacteria have developed specific mechanisms to keep c-di-AMP as the central regulator of osmotic homeostasis.
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Affiliation(s)
- Laura Devaux
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Dona Sleiman
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
| | - Maria-Vittoria Mazzuoli
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Myriam Gominet
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
| | - Philippe Lanotte
- Université de Tours, Infectiologie et Santé Publique, Bactéries et Risque Materno-Fœtal, INRA UMR1282, Tours France
- Hôpital Bretonneau, Centre Hospitalier Régional et Universitaire de Tours, Service de Bactériologie-Virologie, Tours France
| | - Patrick Trieu-Cuot
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
| | - Pierre-Alexandre Kaminski
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
| | - Arnaud Firon
- Institut Pasteur, Unité Biologie des Bactéries Pathogènes à Gram-positif, CNRS ERL 6002, Paris, France
- * E-mail:
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Hobson C, Le Brun C, Beauruelle C, Maakaroun-Vermesse Z, Mereghetti L, Goudeau A, Lanotte P. Detection of Bartonella in cat scratch disease using a single-step PCR assay kit. J Med Microbiol 2017; 66:1596-1601. [PMID: 29068281 DOI: 10.1099/jmm.0.000626] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
PURPOSE Bartonella is an increasingly isolated emerging pathogen that can cause severe illness in humans, including cat scratch disease (CSD). The bacteria are difficult to grow and thus many detection methods have been developed, especially molecular. We previously developed a PCR method targeting ribC to identify Bartonella sp. A manufactured kit (RealCycler BART, Progenie Molecular) was commercialised shortly thereafter for the detection of Bartonella infection, including Bartonella henselae. METHODOLOGY We performed a comparison between this test and our in-house PCR assay on 73 lymphadenopathy samples sent to the laboratory for suspicion of CSD.Results/Key findings. Among the 28 positive samples for Bartonella, 21 were identified by the two PCR assays, and seven by the commercial kit only. CONCLUSION The performance of this commercial kit suggests that it could be a suitable alternative to our in-house PCR assay, highlighting the importance of the molecular methods used to diagnose CSD.
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Affiliation(s)
- C Hobson
- CHRU de Tours, Service de Bactériologie-Virologie, F-37044 Tours, France
| | - C Le Brun
- CHRU de Tours, Service de Bactériologie-Virologie, F-37044 Tours, France
| | - C Beauruelle
- CHRU de Tours, Service de Bactériologie-Virologie, F-37044 Tours, France.,ISP, INRA, Université François Rabelais de Tours, UMR 1282, F-37380, Nouzilly, France
| | - Z Maakaroun-Vermesse
- CHRU de Tours, Service de Médecine et Maladies Infectieuses, F-37044 Tours, France
| | - L Mereghetti
- CHRU de Tours, Service de Bactériologie-Virologie, F-37044 Tours, France.,ISP, INRA, Université François Rabelais de Tours, UMR 1282, F-37380, Nouzilly, France
| | - A Goudeau
- CHRU de Tours, Service de Bactériologie-Virologie, F-37044 Tours, France
| | - P Lanotte
- ISP, INRA, Université François Rabelais de Tours, UMR 1282, F-37380, Nouzilly, France.,CHRU de Tours, Service de Bactériologie-Virologie, F-37044 Tours, France
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Beauruelle C, Pastuszka A, Horvath P, Perrotin F, Mereghetti L, Lanotte P. CRISPR: A Useful Genetic Feature to Follow Vaginal Carriage of Group B Streptococcus. Front Microbiol 2017; 8:1981. [PMID: 29075246 PMCID: PMC5641575 DOI: 10.3389/fmicb.2017.01981] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/25/2017] [Indexed: 11/16/2022] Open
Abstract
Clustered regularly interspaced short palindromic repeats (CRISPR) and Cas (CRISPR-associated proteins) play a critical role in adaptive immunity against mobile genetic elements, especially phages, through their ability to acquire novel spacer sequences. Polarized spacer acquisition results in spacer polymorphism and temporal organization of CRISPR loci, making them attractive epidemiological markers. Group B Streptococcus (GBS), a genital commensal for 10 to 30% of healthy women and a major neonatal pathogen, possesses a ubiquitous and functional CRISPR1 locus. Our aim was to assess the CRISPR1 locus as an epidemiological marker to follow vaginal carriage of GBS in women. This study also allowed us to observe the evolution of the CRISPR1 locus in response to probable phage infection occurring in vivo. We followed carriage of GBS among 100 women over an 11-year period, with a median duration of approximately 2 years. The CRISPR1 locus was highly conserved over time. The isolates that show the same CRISPR1 genotype were collected from 83% of women. There was an agreement between CRISPR genotyping and other typing methods [MLVA (multilocus variable number of tandem repeat Analysis) and MLST (multilocus sequence typing)] for 94% of the cases. The CRISPR1 locus of the isolates from 18 women showed modifications, four of which acquired polarized spacer, highlighting the in vivo functionality of the system. The novel spacer of one isolate had sequence similarity with phage, suggesting that phage infection occurred during carriage. These findings improve our understanding of CRISPR-Cas evolution in GBS and provide a glimpse of host-phage dynamics in vivo.
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Affiliation(s)
- Clémence Beauruelle
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France.,INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France.,Service de Bactériologie-Virologie, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Adeline Pastuszka
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France.,INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France.,Service de Bactériologie-Virologie, Centre Hospitalier Universitaire de Tours, Tours, France
| | | | - Franck Perrotin
- Inserm U930, Université François Rabelais de Tours, Tours, France.,Département d'Obstétrique de Gynécologie et de Médecine Fœtale, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Laurent Mereghetti
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France.,INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France.,Service de Bactériologie-Virologie, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Philippe Lanotte
- Université François Rabelais de Tours, UMR1282 Infectiologie et Santé Publique, Tours, France.,INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly, France.,Service de Bactériologie-Virologie, Centre Hospitalier Universitaire de Tours, Tours, France
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Balavoine C, Lanotte P, Campana M, Ghanem M, Marchand-Adam S. Pneumopathie d’hypersensibilité à mycobactéries atypiques se compliquant d’un abcès à Mycobacterium intracellulare. Rev Mal Respir 2017. [DOI: 10.1016/j.rmr.2017.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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De Kyvon MALC, Maakaroun-Vermesse Z, Lanotte P, Priotto G, Perez-Simarro P, Guennoc AM, De Toffol B, Paris L, Bernard L, Goudeau A, Chandenier J, Desoubeaux G. Congenital Trypanosomiasis in Child Born in France to African Mother. Emerg Infect Dis 2016; 22:935-7. [PMID: 27088460 PMCID: PMC4861501 DOI: 10.3201/eid2205.160133] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Tasse J, Dupieux C, Caillon J, Lanotte P, Lamy B, Aissa N, Bemer P, Mereghetti L, Michon AL, Lozniewski A, Bes M, Trouillet-Assant S, Laurent F. Rapid bench identification of methicillin-sensitive and methicillin-resistant Staphylococcus aureus: A multicenter comparative evaluation of Alere PBP2a Culture Colony Test (Alere) Versus Slidex MRSA detection (bioMérieux). Diagn Microbiol Infect Dis 2016; 85:419-21. [DOI: 10.1016/j.diagmicrobio.2016.04.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/11/2016] [Accepted: 04/10/2016] [Indexed: 10/21/2022]
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Gaillat J, Varon E, Lanotte P, Lepoutre A, Pelloux I, Epaulard O, Bernard L, Chavanet P, Mootien Y. COL 2-02 - Surveillance épidémiologique clinico-microbiologique des infections invasives à pneumocoque de l’adulte (IIP) (SIIPA). Med Mal Infect 2016. [DOI: 10.1016/s0399-077x(16)30262-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Le Brun C, Gombert M, Robert S, Mercier E, Lanotte P. Association of Necrotizing Wounds Colonized by Maggots with Ignatzschineria-Associated Septicemia. Emerg Infect Dis 2016; 21:1881-3. [PMID: 26402740 PMCID: PMC4593450 DOI: 10.3201/eid2110.150748] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Lavigne JP, Bruyère F, Bernard L, Combescure C, Ronco E, Lanotte P, Coloby P, Thibault M, Cariou G, Desplaces N, Costa P, Sotto A. Resistance and virulence potential of uropathogenic Escherichia coli strains isolated from patients hospitalized in urology departments: a French prospective multicentre study. J Med Microbiol 2016; 65:530-537. [PMID: 26953145 DOI: 10.1099/jmm.0.000247] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We characterized antibiotic resistance and virulence of uropathogenic Escherichia coli (UPEC) strains isolated from urinary tract infections (UTIs) in patients hospitalized in urology departments. A prospective multicentre study was initiated from March 2009 and lasted until February 2010 in French urology units. All patients with asymptomatic bacteriuria (ABU), acute cystitis, acute pyelonephritis or acute prostatitis in whom UPEC was detected were included. Antimicrobial resistance and virulence factors were compared among the different groups. To identify independent associations between virulence markers and the risk of UTI, we used a multivariate logistic regression. We included 210 patients (mean age: 65.8 years; 106 female). Episode of UTI was community acquired in 72.4 %. ABU was diagnosed in 67 cases (31.9 %), cystitis in 52 cases (24.7 %), pyelonephritis in 35 cases (16.7 %) and prostatitis in 56 cases (26.7 %). ABU was more frequent in patients with a urinary catheter (76.1 vs 23.9 %, P<0.001). The resistance rate was 7.6 and 24.8 % for cefotaxime and ciprofloxacin, respectively. UPEC isolated from infections belonged more frequently to phylotypes B2 and D (P =0.07). The papG allele II and papA, papC, papE, kpsMTII and iutA genes were significantly more frequent in infecting strains (P<0.05). In multivariate analysis, strains susceptible to ciprofloxacin were significantly associated with papG allele II (P=0.007), kpsMTK1 (P<0.001) and hlyA (P<0.001) compared with the ciprofloxacin-resistant strains. To the best of our knowledge, this is the first study evaluating the antibiotic resistance and virulence features of UPEC isolated from patients hospitalized in urology departments. High resistance rates were observed, notably for ciprofloxacin, highlighting the importance of a reinforced surveillance in this setting.
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Affiliation(s)
- Jean-Philippe Lavigne
- INSERM, U1047, Université Montpellier, UFR de Médecine, 30908 Nîmes Cedex 2, France.,Service de Microbiologie, Groupe Hospitalo-Universitaire de Carémeau, 30029 Nîmes Cedex 9, France
| | - Franck Bruyère
- Service d'Urologie, Centre Hospitalier Régional Universitaire Bretonneau, 37044 Tours cedex 1, France.,Université Francois Rabelais de Tours, PRES Centre-Val de Loire Université, 37000 Tours, France
| | - Louis Bernard
- Université Francois Rabelais de Tours, PRES Centre-Val de Loire Université, 37000 Tours, France.,Service des Maladies Infectieuses et Tropicales, Centre Hospitalier Régional Universitaire Bretonneau, 37044 Tours Cedex 1, France
| | - Christophe Combescure
- Division of Clinical Epidemiology, Geneva University Hospital, University of Geneva, Geneva, Switzerland
| | - Esthel Ronco
- Laboratoire de Bactériologie, AP-HP Raymond Poincaré, 92380 Garches, France
| | - Philippe Lanotte
- Service de Bactériologie-Virologie, Centre Hospitalier Régional Universitaire Bretonneau, 37044 Tours Cedex 1, France.,Equipe Bactéries et risque materno-fœtal, Université François Rabelais de Tours, UMR1282 ISP, 37032 Tours, France.,Equipe Bactéries et risque materno-fœtal, INRA, UMR1282 ISP, 37380 Nouzilly, France
| | - Patrick Coloby
- Service d'Urologie, Centre Hospitalier René Dubos, 95300 Pontoise, France
| | - Michel Thibault
- Laboratoire de Bactériologie, Centre Hospitalier René Dubos, 95300 Pontoise, France
| | - Gérard Cariou
- Service d'Urologie, Groupe Hospitalier Diaconesses Croix St Simon, 75020 Paris, France
| | - Nicole Desplaces
- Laboratoire de Bactériologie, Groupe Hospitalier Diaconesses Croix St Simon, 75020 Paris, France
| | - Pierre Costa
- Service d'Urologie, Groupe Hospitalo-Universitaire de Carémeau, 30029 Nîmes Cedex 9, France
| | - Albert Sotto
- INSERM, U1047, Université Montpellier, UFR de Médecine, 30908 Nîmes Cedex 2, France.,Service des Maladies Infectieuses et Tropicales, Groupe Hospitalo-Universitaire de Carémeau, 30029 Nîmes Cedex 9, France
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Mounayar A, Lanotte P, Chaussade H, Diallo Boubacar D, Diot P, Marchand-Adam S. Évaluation de l’intérêt de 3 prélèvements respiratoires dans le diagnostic de tuberculose pulmonaire : une étude rétrospective réalisée au CHRU de Tours. Rev Mal Respir 2016. [DOI: 10.1016/j.rmr.2015.10.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Pailhoriès H, Buzelé R, Picardeau M, Robert S, Mercier E, Mereghetti L, Lanotte P. Molecular characterization of Leptospira sp by multilocus variable number tandem repeat analysis (MLVA) from clinical samples: a case report. Int J Infect Dis 2015; 37:119-21. [PMID: 26159846 DOI: 10.1016/j.ijid.2015.06.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/19/2015] [Accepted: 06/28/2015] [Indexed: 11/19/2022] Open
Abstract
Leptospirosis is a zoonotic infection for which diagnosis is difficult. It has appeared as a global emerging infectious disease over recent years. Genotype determination often requires a Leptospira strain obtained by culture, which is a long and fastidious technique. A method based on multilocus variable number tandem repeat analysis (MLVA) to determine the genotype of Leptospira interrogans, performed directly on blood or urine samples, is proposed. This method was applied to a fatal case of leptospirosis for which the geographical origin of infection was unknown. This technique will allow a genotype to be obtained for L. interrogans, even when cultures remain negative.
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Affiliation(s)
- Hélène Pailhoriès
- CHU d'Angers, Laboratoire de Bactériologie, Institut de Biologie en Santé, Angers, France
| | - Rodolphe Buzelé
- Service de Bactériologie-Virologie, Hôpital Bretonneau - CHRU de Tours, 2 boulevard Tonnellé, F-37044 Tours, France
| | - Mathieu Picardeau
- Institut Pasteur, Unité de Biologie des Spirochètes, National Reference Centre and WHO Collaborating Centre for Leptospirosis, Paris, France
| | - Sylvie Robert
- Service de Bactériologie-Virologie, Hôpital Bretonneau - CHRU de Tours, 2 boulevard Tonnellé, F-37044 Tours, France
| | - Emmanuelle Mercier
- CHRU de Tours, Service de Réanimation Médicale, Tours, France; Clinical Research in Intensive Care and Sepsis (CRICS) Group, Tours, France
| | - Laurent Mereghetti
- Service de Bactériologie-Virologie, Hôpital Bretonneau - CHRU de Tours, 2 boulevard Tonnellé, F-37044 Tours, France; Université François Rabelais de Tours, UMR1282 ISP, Faculté de Médecine, Tours, France; INRA, UMR1282 ISP, Equipe Bactéries et Risque Materno-foetal, Nouzilly, France
| | - Philippe Lanotte
- Service de Bactériologie-Virologie, Hôpital Bretonneau - CHRU de Tours, 2 boulevard Tonnellé, F-37044 Tours, France; Université François Rabelais de Tours, UMR1282 ISP, Faculté de Médecine, Tours, France; INRA, UMR1282 ISP, Equipe Bactéries et Risque Materno-foetal, Nouzilly, France.
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Ogielska M, Lanotte P, Le Brun C, Valentin AS, Garot D, Tellier AC, Halimi JM, Colombat P, Guilleminault L, Lioger B, Vegas H, De Toffol B, Constans T, Bernard L. Emergence of community-acquired Clostridium difficile infection: the experience of a French hospital and review of the literature. Int J Infect Dis 2015; 37:36-41. [PMID: 26092300 DOI: 10.1016/j.ijid.2015.06.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 06/10/2015] [Accepted: 06/11/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Clostridium difficile infection (CDI) is a common cause of nosocomial diarrhoea. People in the general community are not usually considered to be at risk of CDI. CDI is associated with a high risk of morbidity and mortality. The risk of severity is defined by the Clostridium Severity Index (CSI). METHODS The cases of 136 adult patients with CDI treated at the University Hospital of Tours, France between 2008 and 2012 are described. This was a retrospective study. RESULTS Among the 136 patients included, 62 were men and 74 were women. Their median age was 64.4 years (range 18-97 years). Twenty-six of the 136 (19%) cases were community-acquired (CA) and 110 (81%) were healthcare-acquired (HCA). The major risk factors for both groups were long-term treatment with proton pump inhibitors (54% of CA, 53% of HCA patients) and antibiotic treatment within the 2.5 months preceding the CDI (50% of CA, 91% of HCA). The CSI was higher in the CA-CDI group (1.56) than in the HCA-CDI group (1.39). Intensive care was required for 8% of CA-CDI and 16.5% of HCA-CDI patients. CONCLUSIONS CDI can cause community-acquired diarrhoea, and CA-CDI may be more severe than HCA-CDI. Prospective studies of CDI involving people from the general community without risk factors are required to confirm this observation.
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Affiliation(s)
- Maja Ogielska
- Infectious Diseases Department, University Hospital of Tours, 2 boulevard Tonnellé, 37000 Tours, France.
| | | | | | - Anne Sophie Valentin
- Bacteriology and Virology Department of Bretonneau, University Hospital of Tours, France(c)Bacteriology Department of Trousseau, University Hospital of Tours, Tours, France
| | - Denis Garot
- Medical Intensive Care Unit, University Hospital of Tours, Tours, France
| | | | - Jean Michel Halimi
- Kidney Transplant Department, University Hospital of Tours, Tours, France
| | | | | | - Bertrand Lioger
- Internal Medicine Department, University Hospital of Tours, Tours, France
| | - Hélène Vegas
- Oncology Department, University Hospital of Tours, Tours, France
| | | | - Thierry Constans
- Geriatric Medicine Department, University Hospital of Tours, Tours, France
| | - Louis Bernard
- Infectious Diseases Department, University Hospital of Tours, 2 boulevard Tonnellé, 37000 Tours, France
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Lier C, Baticle E, Horvath P, Haguenoer E, Valentin AS, Glaser P, Mereghetti L, Lanotte P. Analysis of the type II-A CRISPR-Cas system of Streptococcus agalactiae reveals distinctive features according to genetic lineages. Front Genet 2015; 6:214. [PMID: 26124774 PMCID: PMC4466440 DOI: 10.3389/fgene.2015.00214] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/01/2015] [Indexed: 12/12/2022] Open
Abstract
CRISPR-Cas systems (clustered regularly interspaced short palindromic repeats/CRISPR-associated proteins) are found in 90% of archaea and about 40% of bacteria. In this original system, CRISPR arrays comprise short, almost unique sequences called spacers that are interspersed with conserved palindromic repeats. These systems play a role in adaptive immunity and participate to fight non-self DNA such as integrative and conjugative elements, plasmids, and phages. In Streptococcus agalactiae, a bacterium implicated in colonization and infections in humans since the 1960s, two CRISPR-Cas systems have been described. A type II-A system, characterized by proteins Cas9, Cas1, Cas2, and Csn2, is ubiquitous, and a type I–C system, with the Cas8c signature protein, is present in about 20% of the isolates. Unlike type I–C, which appears to be non-functional, type II-A appears fully functional. Here we studied type II-A CRISPR-cas loci from 126 human isolates of S. agalactiae belonging to different clonal complexes that represent the diversity of the species and that have been implicated in colonization or infection. The CRISPR-cas locus was analyzed both at spacer and repeat levels. Major distinctive features were identified according to the phylogenetic lineages previously defined by multilocus sequence typing, especially for the sequence type (ST) 17, which is considered hypervirulent. Among other idiosyncrasies, ST-17 shows a significantly lower number of spacers in comparison with other lineages. This characteristic could reflect the peculiar virulence or colonization specificities of this lineage.
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Affiliation(s)
- Clément Lier
- UMR1282 Infectiologie et Santé Publique, Bactéries et Risque Materno-Foetal, Université de Tours, Tours France ; INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly France ; Service de Bactériologie-Virologie, Hôpital Bretonneau - Centre Hospitalier Régional et Universitaire de Tours, Tours France
| | - Elodie Baticle
- Service de Bactériologie-Virologie, Hôpital Bretonneau - Centre Hospitalier Régional et Universitaire de Tours, Tours France
| | | | - Eve Haguenoer
- UMR1282 Infectiologie et Santé Publique, Bactéries et Risque Materno-Foetal, Université de Tours, Tours France ; INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly France
| | - Anne-Sophie Valentin
- UMR1282 Infectiologie et Santé Publique, Bactéries et Risque Materno-Foetal, Université de Tours, Tours France ; INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly France ; Service de Bactériologie-Virologie, Hôpital Bretonneau - Centre Hospitalier Régional et Universitaire de Tours, Tours France
| | - Philippe Glaser
- Unité de Biologie des Bactéries Pathogènes à Gram Positif, Institut Pasteur, Paris France ; CNRS UMR 3525, Paris France
| | - Laurent Mereghetti
- UMR1282 Infectiologie et Santé Publique, Bactéries et Risque Materno-Foetal, Université de Tours, Tours France ; INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly France ; Service de Bactériologie-Virologie, Hôpital Bretonneau - Centre Hospitalier Régional et Universitaire de Tours, Tours France
| | - Philippe Lanotte
- UMR1282 Infectiologie et Santé Publique, Bactéries et Risque Materno-Foetal, Université de Tours, Tours France ; INRA, UMR1282 Infectiologie et Santé Publique, Nouzilly France ; Service de Bactériologie-Virologie, Hôpital Bretonneau - Centre Hospitalier Régional et Universitaire de Tours, Tours France
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Le Brun C, Robert S, Tanchoux C, Bruyere F, Lanotte P. Urinary tract infection caused by Actinobaculum schaalii: a urosepsis pathogen that should not be underestimated. JMM Case Rep 2015. [DOI: 10.1099/jmmcr.0.000030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Cécile Le Brun
- Laboratoire de Bactériologie–Virologie, CHRU de Tours, Hôpital Bretonneau, 37000 Tours, France
| | - Sylvie Robert
- Laboratoire de Bactériologie–Virologie, CHRU de Tours, Hôpital Bretonneau, 37000 Tours, France
| | - Colas Tanchoux
- Service d'Urologie, CHRU de Tours, Hôpital Bretonneau, 37000 Tours, France
| | - Franck Bruyere
- Service d'Urologie, CHRU de Tours, Hôpital Bretonneau, 37000 Tours, France
| | - Philippe Lanotte
- Laboratoire de Bactériologie–Virologie, CHRU de Tours, Hôpital Bretonneau, 37000 Tours, France
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Le Brun C, Robert S, Bruyere F, Lanotte P. [Emerging uropathogens: Point for urologists and biologists]. Prog Urol 2015; 25:363-9. [PMID: 25726694 DOI: 10.1016/j.purol.2015.01.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/24/2015] [Accepted: 01/30/2015] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Technological advances during the last years in bacterial identification by molecular biology and mass spectrometry, or Matrix Assisted Laser Desorption Ionisation-Time of Flight (MALDI-TOF) have allowed identifying new bacteria involved in urinary tract infections. The purpose of this review is to familiarize clinicians with these bacteria so that they can look at a particular target population and help biologists to suspect and identify them. METHOD A bibliographic research was performed using the Medline database concerning the keywords Aerococcus, Actinobaculum, Alloscardovia, Trueperella. RESULTS If Aerococcus sp. is now well known, Actinobaculum sp., Alloscardovia sp. and Trueperella sp. remain rarely isolated and unknown from clinicians. Importance of these germs could be underestimated because of the identifying and isolation difficulties which existed beforehand. They are particularly found in a population of elderly people with underlying conditions or urological risk factors of urinary tract infection. Actinobaculum schaalii is also found more frequently in young children. CONCLUSION Aerococcus sp. et A. schaalii are true uropathogens not to be underestimated. Further studies are still needed to confirm the specific involvement of Trueperella and Alloscardovia in urinary diseases.
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Affiliation(s)
- C Le Brun
- Laboratoire de bactériologie-virologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnelé, 37044 Tours cedex, France.
| | - S Robert
- Laboratoire de bactériologie-virologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnelé, 37044 Tours cedex, France
| | - F Bruyere
- Service d'urologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnelé, 37044 Tours cedex, France
| | - P Lanotte
- Laboratoire de bactériologie-virologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnelé, 37044 Tours cedex, France
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Guillon A, Mercier E, Lanotte P, Haguenoer E, Darrouzain F, Barc C, Sarradin P, Si-Tahar M, Heuzé-Vourc'h N, Diot P, Vecellio L. Aerosol Route to Administer Teicoplanin in Mechanical Ventilation: In Vitro Study, Lung Deposition and Pharmacokinetic Analyses in Pigs. J Aerosol Med Pulm Drug Deliv 2015; 28:290-8. [PMID: 25616054 DOI: 10.1089/jamp.2014.1164] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKROUND Glycopeptides given intravenously achieve low airway concentrations. Nebulization of teicoplanin may be an efficient way of delivering a high concentration of this antibiotic to the lung. This multistep study assessed the feasibility of teicoplanin nebulization during mechanical ventilation by evaluating: the stability of its antibiotic effect; epithelial tolerance; lung deposition and systemic absorption in ventilated pigs. METHODS Nebulized and non-nebulized teicoplanin activity was tested on Staphylococcus aureus cultures. The cytotoxic effect of teicoplanin on human respiratory epithelial cells was assessed by measuring lactate dehydrogenase activity released, cell viability, and transepithelial electrical resistance. Volume median diameter of particles of nebulized teicoplanin was measured by laser diffraction during mechanical ventilation. The deposited mass of teicoplanin nebulized with a vibrating mesh nebulizer in ventilated piglets was assessed by scintigraphy. Blood pharmacokinetics of teicoplanin administered either intravenously or by nebulization was compared. RESULTS No decrease of antibiotic activity was observed after nebulization. In vitro cytotoxicity of teicoplanin was only observed with 1000 times the dose recommended for intravenous administration. Volume median diameter of particles was 2.5±0.1 μm. Of the initial nebulizer charge of teicoplanin, 24±7% was present in the lungs of ventilated pigs after the nebulization. Amount absorbed in blood was low (3.4%±0.9%) after nebulization, and blood stream elimination half-life value was 25.4 h. CONCLUSIONS Teicoplanin was administered efficiently by nebulization during mechanical ventilation, without any effect on its pharmacological properties or any cytotoxicity. The pharmacokinetic parameters are promising in view of its time-dependent killing process. All the results of our multi-step study highlighted the potential of teicoplanin to be nebulized during mechanical ventilation.
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Affiliation(s)
- Antoine Guillon
- 1 Université François Rabelais de Tours , EA6305, Tours, France .,2 INSERM, U1100, Centre d'Etude des Pathologies Respiratoires , Tours, France .,3 CHRU de Tours, Service de Réanimation Polyvalente , Tours, France
| | - Emmanuelle Mercier
- 1 Université François Rabelais de Tours , EA6305, Tours, France .,2 INSERM, U1100, Centre d'Etude des Pathologies Respiratoires , Tours, France .,3 CHRU de Tours, Service de Réanimation Polyvalente , Tours, France
| | - Philippe Lanotte
- 4 Université François Rabelais de Tours , UMR1282 ISP, Tours, France .,5 INRA , UMR 1282 ISP, Nouzilly, France .,6 Service de Bactériologie-Virologie , Tours, France
| | - Eve Haguenoer
- 4 Université François Rabelais de Tours , UMR1282 ISP, Tours, France .,6 Service de Bactériologie-Virologie , Tours, France
| | | | - Céline Barc
- 8 INRA , UE1277, Plate-Forme d'Infectiologie Expérimentale, Nouzilly, France
| | - Pierre Sarradin
- 8 INRA , UE1277, Plate-Forme d'Infectiologie Expérimentale, Nouzilly, France
| | - Mustapha Si-Tahar
- 1 Université François Rabelais de Tours , EA6305, Tours, France .,2 INSERM, U1100, Centre d'Etude des Pathologies Respiratoires , Tours, France
| | - Nathalie Heuzé-Vourc'h
- 1 Université François Rabelais de Tours , EA6305, Tours, France .,2 INSERM, U1100, Centre d'Etude des Pathologies Respiratoires , Tours, France
| | - Patrice Diot
- 1 Université François Rabelais de Tours , EA6305, Tours, France .,2 INSERM, U1100, Centre d'Etude des Pathologies Respiratoires , Tours, France
| | - Laurent Vecellio
- 1 Université François Rabelais de Tours , EA6305, Tours, France .,9 Aerodrug, Université François Rabelais , Faculté de Médecine, Tours, France
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Bernard MC, Lanotte P, Lawrence C, Goudeau A, Bernard L. Air Contamination around Patients Colonized with Multidrug-Resistant Organisms. Infect Control Hosp Epidemiol 2015; 33:949-51. [DOI: 10.1086/667373] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Care-related infections are a major public health concern. Their transmission can be associated with environmental factors. This study looks at air contamination around 45 patients colonized with multidrug-resistant organisms (MDROs). We found that 30 hospital rooms (67%) were contaminated with MDRO species and 10 rooms (22%) were contaminated with at least 1 MDRO.
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Kempf M, Varon E, Lepoutre A, Gravet A, Baraduc R, Brun M, Chardon H, Cremniter J, Croizé J, Dalmay F, Demachy MC, Fosse T, Grelaud C, Hadou T, Hamdad F, Koeck JL, Luce S, Mermond S, Patry I, Péchinot A, Raymond J, Ros A, Segonds C, Soullié B, Tandé D, Vergnaud M, Vernet-Garnier V, Wallet F, Gutmann L, Ploy MC, Lanotte P. Decline in antibiotic resistance and changes in the serotype distribution of Streptococcus pneumoniae isolates from children with acute otitis media; a 2001-2011 survey by the French Pneumococcal Network. Clin Microbiol Infect 2014; 21:35-42. [PMID: 25636925 DOI: 10.1016/j.cmi.2014.08.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 07/25/2014] [Accepted: 08/06/2014] [Indexed: 11/19/2022]
Abstract
Streptococcus pneumoniae is an important cause of acute otitis media (AOM). The aim of this study was to evaluate trends in antibiotic resistance and circulating serotypes of pneumococci isolated from middle ear fluid of French children with AOM during the period 2001-2011, before and after the introduction of the PCV-7 (2003) and PCV-13 (2010) vaccines. Between 2001 and 2011 the French pneumococcal surveillance network analysed the antibiotic susceptibility of 6683 S. pneumoniae isolated from children with AOM, of which 1569 were serotyped. We observed a significant overall increase in antibiotic susceptibility. Respective resistance (I+R) rates in 2001 and 2011 were 76.9% and 57.3% for penicillin, 43.0% and 29.8% for amoxicillin, and 28.6% and 13.0% for cefotaxime. We also found a marked reduction in vaccine serotypes after PCV-7 implementation, from 63.0% in 2001 to 13.2% in 2011, while the incidence of the additional six serotypes included in PCV-13 increased during the same period, with a particularly high proportion of 19A isolates. The proportion of some non-PCV-13 serotypes also increased between 2001 and 2011, especially 15A and 23A. Before PCV-7 implementation, most (70.8%) penicillin non-susceptible pneumococci belonged to PCV-7 serotypes, whereas in 2011, 56.8% of penicillin non-susceptible pneumococci belonged to serotype 19A. Between 2001 and 2011, antibiotic resistance among pneumococci responsible for AOM in France fell markedly, and PCV-7 serotypes were replaced by non-PCV-7 serotypes, especially 19A. We are continuing to assess the impact of PCV-13, introduced in France in 2010, on pneumococcal serotype circulation and antibiotic resistance.
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Affiliation(s)
- M Kempf
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - E Varon
- Centre National de Référence des Pneumocoques (CNRP), AP-HP HEGP, Paris, France
| | - A Lepoutre
- Institut de Veille Sanitaire (InVS), Saint Maurice, France
| | - A Gravet
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - R Baraduc
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - M Brun
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - H Chardon
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - J Cremniter
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - J Croizé
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - F Dalmay
- CHU Limoges, UFRCB, Limoges, France
| | - M-C Demachy
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - T Fosse
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - C Grelaud
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - T Hadou
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - F Hamdad
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - J-L Koeck
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - S Luce
- CHU Limoges, UFRCB, Limoges, France
| | - S Mermond
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - I Patry
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - A Péchinot
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - J Raymond
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - A Ros
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - C Segonds
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - B Soullié
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - D Tandé
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - M Vergnaud
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - V Vernet-Garnier
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - F Wallet
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - L Gutmann
- Centre National de Référence des Pneumocoques (CNRP), AP-HP HEGP, Paris, France
| | - M-C Ploy
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France
| | - P Lanotte
- French pneumococcal surveillance network 'Observatoires Régionaux du Pneumocoque', CHU Limoges, Limoges, France.
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Desoubeaux G, Franck-Martel C, Bailly É, Le Brun C, Gyan E, Goudeau A, Chandenier J, Lanotte P. Prospective assessment of FilmArray® technology for the rapid identification of yeast isolated from blood cultures. J Microbiol Methods 2014; 106:119-122. [PMID: 25192843 DOI: 10.1016/j.mimet.2014.08.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 08/22/2014] [Accepted: 08/22/2014] [Indexed: 12/22/2022]
Abstract
We prospectively assessed the ability of FilmArray® device to identify fungal species involved in bloodstream infections. It succeeded in identifying 85.7% of isolates. The automated readout of results enabled the rapid initiation of appropriate antifungal therapy. Thus, FilmArray® appeared as a reliable alternative diagnostic method for the most common yeast-like species.
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Affiliation(s)
- Guillaume Desoubeaux
- CHU de Tours, Service de Parasitologie, Mycologie, Médecine tropicale, Tours, France; Université François Rabelais, CEPR-INSERM U1100/E.A. 6305, Faculté de Médecine, Tours, France.
| | - Claire Franck-Martel
- CHU de Tours, Service de Parasitologie, Mycologie, Médecine tropicale, Tours, France
| | - Éric Bailly
- CHU de Tours, Service de Parasitologie, Mycologie, Médecine tropicale, Tours, France
| | - Cécile Le Brun
- CHU de Tours, Laboratoire de Bactériologie, Tours, France
| | - Emmanuel Gyan
- CHU de Tours, Service d'Hématologie clinique, Tours, France; Université François Rabelais, N2C-INSERM U1069, Faculté de Médecine, Tours, France
| | - Alain Goudeau
- CHU de Tours, Laboratoire de Bactériologie, Tours, France; Université François Rabelais, E5 "Bactéries et risque materno-fœtal", UMR 1282 ISP, INRA, Nouzilly, France
| | - Jacques Chandenier
- CHU de Tours, Service de Parasitologie, Mycologie, Médecine tropicale, Tours, France; Université François Rabelais, CEPR-INSERM U1100/E.A. 6305, Faculté de Médecine, Tours, France
| | - Philippe Lanotte
- CHU de Tours, Laboratoire de Bactériologie, Tours, France; Université François Rabelais, E5 "Bactéries et risque materno-fœtal", UMR 1282 ISP, INRA, Nouzilly, France
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49
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Gaillat J, Ploy MC, Pelloux I, Lanotte P, Maulin L, Varon E, Lepoutre A. E-13: Épidémiologie des infections invasives à pneumocoque de l’adulte, phase pilote du réseau SIIP. Med Mal Infect 2014. [DOI: 10.1016/s0399-077x(14)70153-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Dubillot D, Maakaroun-Vermesse Z, Tardieu M, Ferrer Catala U, Desoubeaux G, Chandenier J, Lanotte P, Labarthe F. SFP P-104 - Une leucodystrophie congénitale peu commune… La trypanosomiase africaine ! Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72074-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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