1
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Liu CG, Liao AJ. [Feature analysis of different neutrophil levels on the distribution of pathogens in bloodstream infection in patients with hematologic malignancy]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2023; 44:857-860. [PMID: 38049340 PMCID: PMC10694080 DOI: 10.3760/cma.j.issn.0253-2727.2023.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Indexed: 12/06/2023]
Affiliation(s)
- C G Liu
- Department of Hematology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - A J Liao
- Department of Hematology, Shengjing Hospital of China Medical University, Shenyang 110004, China
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2
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Facchin G, Candoni A, Lazzarotto D, Zannier ME, Peghin M, Sozio E, Pellegrini N, Filì C, Sartor A, Tascini C, Fanin R. Clinical characteristics and outcome of 125 polymicrobial bloodstream infections in hematological patients: an 11-year epidemiologic survey. Support Care Cancer 2021; 30:2359-2366. [PMID: 34741656 DOI: 10.1007/s00520-021-06640-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 10/18/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Polymicrobial bloodstream infections (pBSI) occurring in hematological patients are still poorly understood, and specific information are very limited. OBJECTIVES AND METHODS In this epidemiologic survey, we describe clinical characteristics and outcome of 125 consecutive pBSI occurred in oncohematological patients. Polymicrobial bloodstream infections (pBSI) were defined with the isolation of 2 or more bacteria from blood culture specimens obtained within 72 h. RESULTS Over an 11-year period, we documented 500 bacterial bloodstream infections (BSI) in 4542 hospital admissions and 25% (125) of these were pBSI. Most common underlying hematological disease was acute myeloid leukemia and 89% of patients had severe neutropenia. Fifty pBSI (40%) occurred in patients undergoing a stem cell transplantation (SCT), mostly within 30 days from transplant (42/50-84%). Principal bacterial association was Gram-positive plus Gram-negative (57%). Resolution rate of pBSI was 82%, without differences between SCT and non-SCT cases. pBSI-related mortality was 15% (6% in SCT cases). Septic shock occurred in 16% of cases and septic shock-related mortality was 65% (75% in SCT cases and 63% in non-SCT cases; p = 0.6). Multidrug-resistant (MDR) bacteria were involved in 22% of pBSI and the MDR-pBSI-related mortality was significantly higher in SCT patients (p = 0.007). CONCLUSIONS This observational study highlights that pBSI is not a rare bloodstream infectious complication in oncohematological patients. pBSI-related mortality is lower than 20%, but, if septic shock occurs, mortality reaches 65%. MDR bacteria were involved in 22% of cases and pBSI-MDR-related mortality was significantly higher in SCT patients.
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Affiliation(s)
- Gabriele Facchin
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy.
| | - Anna Candoni
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy
| | - Davide Lazzarotto
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy
| | - Maria Elena Zannier
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy
| | - Maddalena Peghin
- Division of Infectious Diseases, University Hospital ASUFC, Udine, Italy
| | - Emanuela Sozio
- Division of Infectious Diseases, University Hospital ASUFC, Udine, Italy
| | - Nicolò Pellegrini
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy
| | - Carla Filì
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy
| | - Assunta Sartor
- Clinical Microbiology, University Hospital ASUFC, Udine, Italy
| | - Carlo Tascini
- Division of Infectious Diseases, University Hospital ASUFC, Udine, Italy
| | - Renato Fanin
- Division of Hematology and Stem Cell Transplantation, University Hospital ASUFC, Udine, Italy
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3
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Malard F, Vekhoff A, Lapusan S, Isnard F, D'incan-Corda E, Rey J, Saillard C, Thomas X, Ducastelle-Lepretre S, Paubelle E, Larcher MV, Rocher C, Recher C, Tavitian S, Bertoli S, Michallet AS, Gilis L, Peterlin P, Chevallier P, Nguyen S, Plantamura E, Boucinha L, Gasc C, Michallet M, Dore J, Legrand O, Mohty M. Gut microbiota diversity after autologous fecal microbiota transfer in acute myeloid leukemia patients. Nat Commun 2021; 12:3084. [PMID: 34035290 PMCID: PMC8149453 DOI: 10.1038/s41467-021-23376-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 04/22/2021] [Indexed: 12/20/2022] Open
Abstract
Acute myeloid leukemia (AML) intensive chemotherapy combined with broad-spectrum antibiotics, leads to gut microbiota dysbiosis promoting pathological conditions and an increased incidence of complications. Here we report findings from a phase II single-arm, multicenter study evaluating autologous fecal microbiota transfer (AFMT) in 25 AML patients treated with intensive chemotherapy and antibiotics (ClinicalTrials.gov number: NCT02928523). The co-primary outcomes of the study are to evaluate the efficacy of AFMT in dysbiosis correction and multidrug-resistant bacteria eradication. The main secondary outcomes are to define a dysbiosis biosignature, to evaluate the effect of dysbiosis correction on patient clinical status, to assess the short and mid-term safety of AFMT in this immunocompromised population, and to evaluate the feasibility of the AFMT procedure and acceptability by the patient. Intensive induction chemotherapy induces a dramatic decrease of α-diversity indices, and a microbial dysbiosis with a significant shift of the microbial communities and domination of pro-inflammatory families. After AFMT treatment, α-diversity indices return to their initial mean levels and the similarity index shows the restoration of microbial communities. The trial meets pre-specified endpoints. AFMT appears to be safe and may be effective for gut microbiota restoration in AML patients receiving intensive chemotherapy and antibiotics, with an excellent gut microbiota reconstruction based on both richness and diversity indices at the species level. The combination of chemotherapy and broad-spectrum antibiotics induces gut microbiota (GM) dysbiosis in acute myeloid leukaemia (AML) leading to additional complications. Here, the authors report the efficacy in GM restoration and safety of autologous faecal microbiota transfer in treated AML patients in a phase II clinical trial.
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Affiliation(s)
- Florent Malard
- Service d'hématologie clinique et de thérapie cellulaire, Hôpital Saint Antoine, APHP, Sorbonne Université, INSERM UMRs 938, Paris, France.
| | - Anne Vekhoff
- Service d'hématologie clinique et de thérapie cellulaire, Hôpital Saint Antoine, APHP, Sorbonne Université, INSERM UMRs 938, Paris, France
| | - Simona Lapusan
- Service d'hématologie clinique et de thérapie cellulaire, Hôpital Saint Antoine, APHP, Sorbonne Université, INSERM UMRs 938, Paris, France
| | - Francoise Isnard
- Service d'hématologie clinique et de thérapie cellulaire, Hôpital Saint Antoine, APHP, Sorbonne Université, INSERM UMRs 938, Paris, France
| | | | - Jérôme Rey
- Service d'hématologie, Institut Paoli Calmettes, Marseille, France
| | - Colombe Saillard
- Service d'hématologie, Institut Paoli Calmettes, Marseille, France
| | - Xavier Thomas
- Service d'hématologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
| | | | - Etienne Paubelle
- Service d'hématologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
| | - Marie-Virginie Larcher
- Service d'hématologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
| | - Clément Rocher
- Service d'hématologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
| | - Christian Recher
- CHU de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Université de Toulouse III Paul Sabatier, Service d'hématologie, Toulouse, France
| | - Suzanne Tavitian
- CHU de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Université de Toulouse III Paul Sabatier, Service d'hématologie, Toulouse, France
| | - Sarah Bertoli
- CHU de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Université de Toulouse III Paul Sabatier, Service d'hématologie, Toulouse, France
| | | | - Lila Gilis
- Service d'hématologie, Centre Léon Bérard, Lyon, France
| | | | | | - Stéphanie Nguyen
- Service d'hématologie clinique, Hôpital de la Pitié Salpétrière, APHP, Sorbonne Université, Paris, France
| | | | | | | | | | - Joel Dore
- Université Paris-Saclay, INRAE, MetaGenoPolis, AgroParisTech, MICALIS, Jouy-en-Josas, France
| | - Ollivier Legrand
- Service d'hématologie clinique et de thérapie cellulaire, Hôpital Saint Antoine, APHP, Sorbonne Université, INSERM UMRs 938, Paris, France
| | - Mohamad Mohty
- Service d'hématologie clinique et de thérapie cellulaire, Hôpital Saint Antoine, APHP, Sorbonne Université, INSERM UMRs 938, Paris, France
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4
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Watanabe N, Kobayashi K, Koyama S, Tabira M, Matsuno J, Taji Y, Akuzawa Y, Ishikawa M, Maeda T, Imai K, Tarumoto N, Asou N, Mitsutake K, Ebihara Y. Bloodstream infection by multidrug-resistant Streptococcus oralis in a leukemic patient with febrile neutropenia after hematopoietic stem cell transplantation. Transpl Infect Dis 2020; 22:e13246. [PMID: 31943573 DOI: 10.1111/tid.13246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 12/19/2019] [Accepted: 01/05/2020] [Indexed: 11/30/2022]
Abstract
We reported the case of a patient with leukemia who developed febrile neutropenia after hematopoietic stem cell transplantation. Blood culture results revealed the presence of Streptococcus oralis, while antimicrobial susceptibility testing showed the resistance to penicillin and cephem. Furthermore, isolates were not susceptible to either meropenem or daptomycin but not to vancomycin. S oralis is known to belong to Streptococcus mitis group and be a causative agent of bacteremia in the neutropenic patients, but multidrug resistance of S oralis is rare. Our findings suggest that we might pay attention to the emergence of the microorganisms acquiring multidrug resistance in neutropenic patients.
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Affiliation(s)
- Noriyuki Watanabe
- Clinical Laboratory, Saitama Medical University International Medical Center, Saitama, Japan
| | - Kiyoko Kobayashi
- Department of Laboratory Medicine, Saitama Medical University International Medical Center, Saitama, Japan
| | - Sachie Koyama
- Clinical Laboratory, Saitama Medical University International Medical Center, Saitama, Japan
| | - Mayu Tabira
- Clinical Laboratory, Saitama Medical University International Medical Center, Saitama, Japan
| | - Junpei Matsuno
- Clinical Laboratory, Saitama Medical University International Medical Center, Saitama, Japan
| | - Yoshitada Taji
- Clinical Laboratory, Saitama Medical University International Medical Center, Saitama, Japan
| | - Yu Akuzawa
- Department of Hemato-Oncology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Maho Ishikawa
- Department of Hemato-Oncology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Tomoya Maeda
- Department of Hemato-Oncology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Kazuo Imai
- Department of Infectious Diseases and Infection Control, Saitama Medical University, Saitama, Japan
| | - Norihito Tarumoto
- Department of Infectious Diseases and Infection Control, Saitama Medical University, Saitama, Japan
| | - Norio Asou
- Department of Hemato-Oncology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Kotaro Mitsutake
- Department of Infectious Diseases and Infection Control, Saitama Medical University International Medical Center, Saitama, Japan
| | - Yasuhiro Ebihara
- Department of Laboratory Medicine, Saitama Medical University International Medical Center, Saitama, Japan
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5
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Clinical Predictors of Pseudomonas aeruginosa Bacteremia in Emergency Department. Emerg Med Int 2018; 2018:7581036. [PMID: 30345116 PMCID: PMC6174785 DOI: 10.1155/2018/7581036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/04/2018] [Accepted: 09/10/2018] [Indexed: 11/17/2022] Open
Abstract
Objectives Pseudomonas aeruginosa shows higher mortality rate compared to other bacterial infections and is susceptible to a limited number of antimicrobial agents. Considering inadequate empirical treatment of Pseudomonas bacteremia has been associated with increased mortality, it is important for emergency physicians to identify infections by P. aeruginosa. Methods This was a single-center retrospective case-control study to investigate the clinical predictors of patients diagnosed as Pseudomonas bacteremia in the emergency department (ED) from June 2012 to December 2016. Patients with blood culture positive for Escherichia coli in the same period were chosen as the control group, and type of infection was matched for each patient. Results A total of 54 cases with Pseudomonas bacteremia and 108 controls with E. coli bacteremia were included. In the case group, 76% was community-acquired infection, 44% received inappropriate empirical treatment in the ED, and in-hospital mortality was 30%. Multiple logistic regression showed that respiratory tract infection was an independent risk factor for Pseudomonas bacteremia (OR 6.56, 95% CI 1.78-23.06; p = 0.004), whereas underlying diabetes mellitus (OR 0.22, 95% CI 0.07-0.61; p = 0.004) and presentation as urinary tract infection (OR 0.06, 95% CI 0.02-0.18; p < 0.001) were negative clinical predictors. Conclusions We suggest that antipseudomonal antibiotics should be considered beyond simple coverage of Gram-negative bacteria in the ED, especially if the patient is likely to have pneumonia. Having diabetes or presenting with urinary tract infection could be clinical factors unfavorable to use of antipseudomonal antibiotics.
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6
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Cojutti PG, Candoni A, Ramos-Martin V, Lazzarotto D, Zannier ME, Fanin R, Hope W, Pea F. Population pharmacokinetics and dosing considerations for the use of daptomycin in adult patients with haematological malignancies. J Antimicrob Chemother 2018; 72:2342-2350. [PMID: 28575511 DOI: 10.1093/jac/dkx140] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/15/2017] [Indexed: 01/31/2023] Open
Abstract
Objectives To assess the population pharmacokinetics (popPK) of daptomycin at the conventional dose of 6 mg/kg/day in a cohort of oncohaematological patients. Methods Patients underwent serial blood sampling on day 3 of therapy (before dosing and at 0, 0.5, 1, 2, 3, 5, 7, 9 and 12 h after dosing) to assess the pharmacokinetic profile of daptomycin. PopPK and Monte Carlo simulation were performed to define the probability of target attainment (PTA) with 6, 8, 10 and 12 mg/kg/day of the pharmacokinetic/pharmacodynamic target of AUC 24 /MIC >1081. Results Thirty patients were recruited. A two-compartment open model with first-order intravenous input and first-order elimination was developed. Estimated creatinine clearance (CL CR ), serum albumin concentration (Alb) and presence of AML were covariates included in the final model. Monte Carlo simulation showed that the conventional 6 mg/kg/day dose resulted in optimal PTAs (≥80%) in the presence of pathogens with an MIC up to 0.5 mg/L only in patients with CL CR 50-100 mL/min/1.73 m 2 , Alb 26-45 g/L and a haematological diagnosis other than AML. Conversely, higher dosages, up to 12 mg/kg/day, were needed to achieve this goal in the presence of pathogens with an MIC of 0.25-0.5 mg/L in all of the other tested scenarios. In patients with CL CR 101-150 mL/min/1.73 m 2 and Alb 15-25 g/L, suboptimal PTAs (<60%) were predicted even with 12 mg/kg/day dosing . Conclusions Our study provides a strong rationale for considering daptomycin dosages of ≥ 8 mg/kg/day in several clinical scenarios for oncohaematological patients. In some of these scenarios therapeutic drug monitoring could be a useful adjunct for optimized care.
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Affiliation(s)
- Pier Giorgio Cojutti
- Institute of Clinical Pharmacology, Santa Maria della Misericordia University Hospital of Udine, ASUIUD, Udine, Italy.,Department of Medicine, University of Udine, Udine, Italy
| | - Anna Candoni
- Division of Haematology, Santa Maria della Misericordia University Hospital of Udine, ASUIUD, Udine, Italy
| | - Virginia Ramos-Martin
- Antimicrobial Pharmacodynamics and Therapeutics, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Davide Lazzarotto
- Division of Haematology, Santa Maria della Misericordia University Hospital of Udine, ASUIUD, Udine, Italy
| | - Maria Elena Zannier
- Division of Haematology, Santa Maria della Misericordia University Hospital of Udine, ASUIUD, Udine, Italy
| | - Renato Fanin
- Division of Haematology, Santa Maria della Misericordia University Hospital of Udine, ASUIUD, Udine, Italy
| | - William Hope
- Antimicrobial Pharmacodynamics and Therapeutics, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Federico Pea
- Institute of Clinical Pharmacology, Santa Maria della Misericordia University Hospital of Udine, ASUIUD, Udine, Italy.,Department of Medicine, University of Udine, Udine, Italy
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7
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Bello Gonzalez TDJ, Pham P, Top J, Willems RJL, van Schaik W, van Passel MWJ, Smidt H. Characterization of Enterococcus Isolates Colonizing the Intestinal Tract of Intensive Care Unit Patients Receiving Selective Digestive Decontamination. Front Microbiol 2017; 8:1596. [PMID: 28894438 PMCID: PMC5581364 DOI: 10.3389/fmicb.2017.01596] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 08/07/2017] [Indexed: 12/11/2022] Open
Abstract
Enterococci have emerged as important opportunistic pathogens in intensive care units (ICUs). In this study, enterococcal population size and Enterococcus isolates colonizing the intestinal tract of ICU patients receiving Selective Digestive Decontamination (SDD) were investigated. All nine patients included in the study showed substantial shifts in the enterococcal 16S rRNA gene copy number in the gut microbiota during the hospitalization period. Furthermore, 41 Enterococcus spp. strains were isolated and characterized from these patients at different time points during and after ICU hospitalization, including E. faecalis (n = 13), E. faecium (n = 23), and five isolates that could not unequivocally assigned to a specific species (E. sp. n = 5) Multi locus sequence typing revealed a high prevalence of ST 6 in E. faecalis isolates (46%) and ST 117 in E. faecium (52%). Furthermore, antibiotic resistance phenotypes, including macrolide and vancomycin resistance, as well as virulence factor-encoding genes [asa1, esp-fm, esp-fs, hyl, and cyl (B)] were investigated in all isolates. Resistance to ampicillin and tetracycline was observed in 25 (61%) and 19 (46%) isolates, respectively. Furthermore, 30 out of 41 isolates harbored the erm (B) gene, mainly present in E. faecium isolates (78%). The most prevalent virulence genes were asa1 in E. faecalis (54%) and esp (esp-fm, 74%; esp-fs, 39%). Six out of nine patients developed nosocomial enterococcal infections, however, corresponding clinical isolates were unfortunately not available for further analysis. Our results show that multiple Enterococcus species, carrying several antibiotic resistance and virulence genes, occurred simultaneously in patients receiving SDD therapy, with varying prevalence dynamics over time. Furthermore, simultaneous presence and/or replacement of E. faecium STs was observed-, reinforcing the importance of screening multiple isolates to comprehensively characterize enterococcal diversity in ICU patients.
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Affiliation(s)
| | - Phu Pham
- Laboratory of Microbiology, Wageningen University & ResearchWageningen, Netherlands
| | - Janetta Top
- Department of Medical Microbiology, University Medical Center UtrechtUtrecht, Netherlands
| | - Rob J L Willems
- Department of Medical Microbiology, University Medical Center UtrechtUtrecht, Netherlands
| | - Willem van Schaik
- Department of Medical Microbiology, University Medical Center UtrechtUtrecht, Netherlands
| | - Mark W J van Passel
- Laboratory of Microbiology, Wageningen University & ResearchWageningen, Netherlands.,Centre for Zoonoses and Environmental Microbiology, National Institute for Public Health and the EnvironmentBilthoven, Netherlands
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & ResearchWageningen, Netherlands
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8
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Viridans group streptococci bloodstream infections in neutropenic adult patients with hematologic malignancy: Single center experience. Folia Microbiol (Praha) 2017; 63:141-146. [DOI: 10.1007/s12223-017-0542-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 07/30/2017] [Indexed: 01/17/2023]
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9
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Kim HS, Park BK, Kim SK, Han SB, Lee JW, Lee DG, Chung NG, Cho B, Jeong DC, Kang JH. Clinical characteristics and outcomes of Pseudomonas aeruginosa bacteremia in febrile neutropenic children and adolescents with the impact of antibiotic resistance: a retrospective study. BMC Infect Dis 2017; 17:500. [PMID: 28716109 PMCID: PMC5513208 DOI: 10.1186/s12879-017-2597-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/06/2017] [Indexed: 11/27/2022] Open
Abstract
Background Although the proportion of Pseudomonas aeruginosa infections has reduced after the introduction of antibiotics with anti-pseudomonal effects, P. aeruginosa bacteremia still causes high mortality in immunocompromised patients. This study determined the clinical characteristics and outcomes of P. aeruginosa bacteremia and the antibiotic susceptibilities of strains isolated from febrile neutropenic patients. Methods Thirty-one febrile neutropenic children and adolescents with underlying hematologic/oncologic disorders diagnosed with P. aeruginosa bacteremia between 2011 and 2016 were enrolled in the study. Their medical records were retrospectively reviewed to evaluate the demographic and clinical characteristics. Antibiotic susceptibility rates of the isolated P. aeruginosa to eight antibiotic categories (anti-pseudomonal penicillin, anti-pseudomonal penicillin and β-lactamase inhibitor combination, anti-pseudomonal cephalosporin, monobactam, carbapenem, aminoglycoside, fluoroquinolone, and colistin) were also determined. Among the investigated factors, risk factors for mortality and infections by a multidrug-resistance (MDR) strain were determined. Results Thirty-six episodes of P. aeruginosa bacteremia were identified. The mean age of the enrolled patients was 9.5 ± 5.4 years, and 26 (72.2%) episodes occurred in boys. Acute myeloid leukemia (41.7%) and acute lymphoblastic leukemia (33.3%) were the most common underlying disorders. The 30-day mortality was 38.9%, and 36.1% of the episodes were caused by MDR strains. The deceased patients were more likely to experience breakthrough infection (P = 0.036) and bacteremia (P = 0.005) due to MDR strains when compared with the patients who survived. The survived patients more likely received appropriate empirical antibiotic therapy (P = 0.024) and anti-pseudomonal β-lactam and aminoglycoside combination therapy (P = 0.039) compared with the deceased patients. The antibiotic susceptibility rates of the isolated P. aeruginosa strains were as follows: piperacillin/tazobactam, 67.6%; meropenem, 72.2%; and amikacin, 100%. Conclusions Mortality due to P. aeruginosa bacteremia remained at 38.9% in this study, and more than one-third of the isolated strains were MDR. In this context, empirical antibiotic combination therapy to expand the antibiotic spectrum may be a strategy to reduce mortality due to P. aeruginosa bacteremia in febrile neutropenic patients.
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Affiliation(s)
- Hyo Sup Kim
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Bo Kyoung Park
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Seong Koo Kim
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung Beom Han
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea. .,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Jae Wook Lee
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dong-Gun Lee
- The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Nack-Gyun Chung
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Bin Cho
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dae Chul Jeong
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Han Kang
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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10
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Alp S, Akova M. Antibacterial Resistance in Patients with Hematopoietic Stem Cell Transplantation. Mediterr J Hematol Infect Dis 2017; 9:e2017002. [PMID: 28101308 PMCID: PMC5224809 DOI: 10.4084/mjhid.2017.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 11/11/2016] [Indexed: 12/18/2022] Open
Abstract
Recipients of hematopoietic stem cell transplantation (HSCT) are at substantial risk of bacterial, fungal, viral, and parasitic infections depending on the time elapsed since transplantation, presence of graft-versus-host disease (GVHD), and the degree of immunosuppression. Infectious complications in HSCT recipients are associated with high morbidity and mortality. Bacterial infections constitute the major cause of infectious complications, especially in the early post-transplant period. The emergence of antibacterial resistance complicates the management of bacterial infections in this patient group. Multidrug-resistant bacterial infections in this group of patients have attracted considerable interest and may lead to significant morbidity and mortality. Empirical antibacterial therapy in patients with HSCT and febrile neutropenia has a critical role for survival and should be based on local epidemiology. This review attempts to provide an overview of risk factors and epidemiology of emerging resistant bacterial infections and their management in HSCT recipients.
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Affiliation(s)
- Sehnaz Alp
- Associate Professor, Hacettepe University, Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - Murat Akova
- Professor, Hacettepe University, Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
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Delebarre M, Tiphaine A, Martinot A, Dubos F. Risk-stratification management of febrile neutropenia in pediatric hematology-oncology patients: Results of a French nationwide survey. Pediatr Blood Cancer 2016; 63:2167-2172. [PMID: 27569451 DOI: 10.1002/pbc.26121] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/31/2016] [Accepted: 06/06/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND In 2012, new international guidelines for children with chemotherapy-induced febrile neutropenia (FN) were issued, recommending reduced-intensity management strategy based on stratification of infectious risks. Some studies have highlighted practice disparities in different countries and within the same country. Our aim was to assess the current management strategies for the treatment of chemotherapy-induced FN in children in France. PROCEDURE This survey of all French pediatric oncology-hematology reference centers (n = 30) in late 2012 and early 2013 sent a standardized questionnaire to each center inquiring about their definition of an FN episode, its initial empiric treatment and ongoing management, use of management stratified by risk, and any criteria used for the risk assessment. Each center's management protocol was also analyzed. RESULTS All French reference centers participated in this survey, completing 88% of the questionnaire items. Definitions of both fever and neutropenia varied between centers. Ten centers used a risk-stratification strategy for initial management. In all, 42 probabilistic first-line antibiotic treatments were identified. After 48 hr of apyrexia, 17 units applied different forms of step-down therapy. CONCLUSIONS Most French centers already offered some form of reduced-intensity or step-down therapy, although they differed substantially in their management of FN episodes. Risk stratification with validated tools is essential to facilitate the implementation of the international recommendations, which would ultimately help to standardize practices in France.
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Affiliation(s)
- Mathilde Delebarre
- Univ. Lille, CHU Lille, Pediatric Emergency Unit & Infectious Diseases, Lille, France. .,Univ. Lille, EA2694, Public Health, Epidemiology and Quality of Care, Lille, France.
| | - Aude Tiphaine
- Univ. Lille, CHU Lille, Pediatric Emergency Unit & Infectious Diseases, Lille, France.,CHU Bordeaux, Pediatric Hematology-Oncology Unit, Bordeaux, France
| | - Alain Martinot
- Univ. Lille, CHU Lille, Pediatric Emergency Unit & Infectious Diseases, Lille, France.,Univ. Lille, EA2694, Public Health, Epidemiology and Quality of Care, Lille, France
| | - François Dubos
- Univ. Lille, CHU Lille, Pediatric Emergency Unit & Infectious Diseases, Lille, France.,Univ. Lille, EA2694, Public Health, Epidemiology and Quality of Care, Lille, France
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Hallböök H, Lidström AK, Pauksens K. Ciprofloxacin prophylaxis delays initiation of broad-spectrum antibiotic therapy and reduces the overall use of antimicrobial agents during induction therapy for acute leukaemia: A single-centre study. Infect Dis (Lond) 2016; 48:443-8. [PMID: 27030917 DOI: 10.3109/23744235.2016.1143963] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Due to an outbreak of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli and Klebsiella pneumoniae, the routine use of fluoroquinolone prophylaxis was questioned. As a result, this study was conducted with the aim to evaluate the impact of ciprofloxacin-prophylaxis on the use of broad-spectrum antibioctics and anti-mycotics. METHODS A cohort of 139 consecutive patients with acute leukaemia treated with remission-inducing induction chemotherapy between 2004-2012 at the Department of Haematology in Uppsala University Hospital was analysed. RESULTS Fifty-three patients (38%) received broad-spectrum antibiotics at the initiation of chemotherapy and were not eligible for prophylaxis. Of the remaining patients, the initiation of broad-spectrum antibiotics was delayed by 3 days in those receiving ciprofloxacin prophylaxis (n = 47) compared with those receiving no prophylaxis (n = 39). The median duration of systemic antibiotic treatment was 6 days shorter in patients receiving ciprofloxacin prophylaxis (12 vs 18 days; p = 0.0005) and the cumulative (total) median days on systemic antibiotic treatment was shortened by 8 days (15 vs 23 days, p = 0.0008). Piperacillin/tazobactam (p = 0.02), carbapenems (p = 0.05) and empiric broad-spectrum antifungals (p < 0.01) were used significantly less often when ciprofloxacin prophylaxis was given. CONCLUSIONS Ciprofloxacin prophylaxis delayed empiric therapy by 3 days and reduced overall antibiotic use in this study. These benefits must be evaluated vs the risks of development of resistant bacterial strains, making fluoroquinolone prophylaxis an open question for debate.
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Affiliation(s)
- Helene Hallböök
- a Department of Medical Sciences , Section of Hematology, Uppsala University , Uppsala
| | - Anna-Karin Lidström
- b Department of Medical Sciences , Section of Infectious Diseases, Uppsala University , Uppsala
| | - Karlis Pauksens
- b Department of Medical Sciences , Section of Infectious Diseases, Uppsala University , Uppsala
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Trubiano JA, Worth LJ, Thursky KA, Slavin MA. The prevention and management of infections due to multidrug resistant organisms in haematology patients. Br J Clin Pharmacol 2015; 79:195-207. [PMID: 24341410 DOI: 10.1111/bcp.12310] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 12/09/2013] [Indexed: 12/15/2022] Open
Abstract
Infections due to resistant and multidrug resistant (MDR) organisms in haematology patients and haematopoietic stem cell transplant recipients are an increasingly complex problem of global concern. We outline the burden of illness and epidemiology of resistant organisms such as gram-negative pathogens, vancomycin-resistant Enterococcus faecium (VRE), and Clostridium difficile in haematology cohorts. Intervention strategies aimed at reducing the impact of these organisms are reviewed: infection prevention programmes, screening and fluoroquinolone prophylaxis. The role of newer therapies (e.g. linezolid, daptomycin and tigecycline) for treatment of resistant and MDR organisms in haematology populations is evaluated, in addition to the mobilization of older agents (e.g. colistin, pristinamycin and fosfomycin) and the potential benefit of combination regimens.
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Affiliation(s)
- Jason A Trubiano
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, East Melbourne, VIC
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Slavin MA, Thursky KA. Improving the outcome of bloodstream infection in patients with hematological malignancies: looking beyond antibiotics. Leuk Lymphoma 2015; 56:3243-5. [PMID: 26088876 DOI: 10.3109/10428194.2015.1064532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Monica A Slavin
- a Department of Infectious Diseases , Peter MacCallum Cancer Centre , East Melbourne , Australia
| | - Karin A Thursky
- a Department of Infectious Diseases , Peter MacCallum Cancer Centre , East Melbourne , Australia
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Kara Ö, Zarakolu P, Aşçioğlu S, Etgül S, Uz B, Büyükaşik Y, Akova M. Epidemiology and emerging resistance in bacterial bloodstream infections in patients with hematologic malignancies. Infect Dis (Lond) 2015; 47:686-93. [PMID: 26024284 DOI: 10.3109/23744235.2015.1051105] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The objective of this study was determine the frequency of bloodstream infections (BSIs) and the causative bacteria and their resistance patterns in patients with hematological malignancies (HMs) in a large tertiary care university hospital in Turkey over a 5-year period. METHODS A total of 2098 patients with HMs with 3703 neutropenic episodes were included. Patients were classified as high-risk (n = 843) and low-risk (n = 1255) groups and evaluated for frequency of BSIs, causative bacteria, and their resistance patterns. RESULTS The frequency of BSIs was 14.5%. The frequency of gram-negative BSIs in high-risk and low-risk groups was 10.7% and 5.4% (p < 0.001), respectively. The frequency of gram-positive BSIs in high-risk and low-risk groups was 7.0% and 3.9% (p < 0.001), respectively. Gram-negative bacteria predominated (52.6%), with Escherichia coli (17.3%) and Klebsiella spp. (11.0%) as the most frequent organisms. Coagulase-negative staphylococci (10.4%) and Corynebacterium spp. (6.3%) were the most common gram-positive bacteria (35.8%). The rate of extended-spectrum beta-lactamase (ESBL) production was 45% for E. coli and 58% for Klebsiella spp. Quinolone resistance was 58% for E. coli and 11% for Klebsiella spp.. The overall frequency of ceftazidime resistance in Pseudomonas aeruginosa was 28%, and 87% of Acinetobacter spp. were multidrug-resistant. Of Staphylococcus aureus isolates, 24.8% were resistant to methicillin. CONCLUSION The dominating causes of BSIs in patients with HMs in our hospital are resistant gram-negative bacteria, which has made empirical antimicrobial choice a highly challenging issue in this patient population.
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Affiliation(s)
- Özgür Kara
- Sections of Infectious Diseases, Department of Internal Medicine, Hacettepe University School of Medicine , Ankara , Turkey
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Current epidemiology and antimicrobial resistance data for bacterial bloodstream infections in patients with hematologic malignancies: an Italian multicentre prospective survey. Clin Microbiol Infect 2015; 21:337-43. [DOI: 10.1016/j.cmi.2014.11.022] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/16/2014] [Accepted: 11/20/2014] [Indexed: 11/19/2022]
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Castagnola E, Mikulska M, Viscoli C. Prophylaxis and Empirical Therapy of Infection in Cancer Patients. MANDELL, DOUGLAS, AND BENNETT'S PRINCIPLES AND PRACTICE OF INFECTIOUS DISEASES 2015. [PMCID: PMC7173426 DOI: 10.1016/b978-1-4557-4801-3.00310-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Tumbarello M, Micozzi A, De Rosa FG. Multidrug-resistant bacteria and bloodstream infections in onco-hematological patients. J Chemother 2014; 27:250-2. [DOI: 10.1179/1973947814y.0000000216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Shelburne SA, Lasky RE, Sahasrabhojane P, Tarrand JT, Rolston KVI. Development and validation of a clinical model to predict the presence of β-lactam resistance in viridans group streptococci causing bacteremia in neutropenic cancer patients. Clin Infect Dis 2014; 59:223-30. [PMID: 24755857 DOI: 10.1093/cid/ciu260] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Concern for serious infection due to β-lactam-resistant viridans group streptococci (VGS) is a major factor driving empiric use of an anti-gram-positive antimicrobial in patients with febrile neutropenia. We sought to develop and validate a prediction model for the presence of β-lactam resistance in VGS causing bloodstream infection (BSI) in neutropenic patients. METHODS Data from 569 unique cases of VGS BSI in neutropenic patients from 2000 to 2010 at the MD Anderson Cancer Center were used to develop the clinical prediction model. Validation was done using 163 cases from 2011 to 2013. In vitro activity of β-lactam agents was determined for 2011-2013 VGS bloodstream isolates. RESULTS In vitro resistance to β-lactam agents commonly used in the empiric treatment of febrile neutropenia was observed only for VGS isolates with a penicillin minimum inhibitory concentration (MIC) of ≥ 2 µg/mL. One hundred twenty-nine of 732 patients (17%) were infected with VGS strains with a penicillin MIC ≥ 2 µg/mL. For the derivation and validation cohorts, 98% of patients infected by VGS with a penicillin MIC of ≥ 2 µg/mL had at least 1 of the following risk factors: current use of a β-lactam as antimicrobial prophylaxis, receipt of a β-lactam antimicrobial in the previous 30 days, or nosocomial VGS BSI onset. Limiting empiric anti-gram-positive therapy to neutropenic patients having at least 1 of these 3 risk factors would have reduced such use by 42%. CONCLUSIONS Simple clinical criteria can assist with targeting of anti-gram-positive therapy to febrile neutropenic patients at risk of serious β-lactam-resistant VGS infection.
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Affiliation(s)
| | - Robert E Lasky
- Department of Center for Clinical Research and Evidence-Based Medicine, University of Texas Health Science Center at Houston
| | | | - Jeffrey T Tarrand
- Department of Laboratory Medicine, MD Anderson Cancer Center, Houston, Texas
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Antimicrobial-resistant Gram-negative bacteria in febrile neutropenic patients with cancer. Curr Opin Infect Dis 2014; 27:200-10. [DOI: 10.1097/qco.0000000000000038] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Cost analysis of dental services needed before hematopoietic cell transplantation. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 117:59-66. [DOI: 10.1016/j.oooo.2013.08.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/15/2013] [Accepted: 08/21/2013] [Indexed: 11/22/2022]
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Castagnola E, Mikulska M, Barabino P, Lorenzi I, Haupt R, Viscoli C. Current research in empirical therapy for febrile neutropenia in cancer patients: what should be necessary and what is going on. Expert Opin Emerg Drugs 2013; 18:263-78. [DOI: 10.1517/14728214.2013.809419] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Di Cesare A, Luna GM, Vignaroli C, Pasquaroli S, Tota S, Paroncini P, Biavasco F. Aquaculture can promote the presence and spread of antibiotic-resistant Enterococci in marine sediments. PLoS One 2013; 8:e62838. [PMID: 23638152 PMCID: PMC3637307 DOI: 10.1371/journal.pone.0062838] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 03/27/2013] [Indexed: 12/20/2022] Open
Abstract
Aquaculture is an expanding activity worldwide. However its rapid growth can affect the aquatic environment through release of large amounts of chemicals, including antibiotics. Moreover, the presence of organic matter and bacteria of different origin can favor gene transfer and recombination. Whereas the consequences of such activities on environmental microbiota are well explored, little is known of their effects on allochthonous and potentially pathogenic bacteria, such as enterococci. Sediments from three sampling stations (two inside and one outside) collected in a fish farm in the Adriatic Sea were examined for enterococcal abundance and antibiotic resistance traits using the membrane filter technique and an improved quantitative PCR. Strains were tested for susceptibility to tetracycline, erythromycin, ampicillin and gentamicin; samples were directly screened for selected tetracycline [tet(M), tet(L), tet(O)] and macrolide [erm(A), erm(B) and mef] resistance genes by newly-developed multiplex PCRs. The abundance of benthic enterococci was higher inside than outside the farm. All isolates were susceptible to the four antimicrobials tested, although direct PCR evidenced tet(M) and tet(L) in sediment samples from all stations. Direct multiplex PCR of sediment samples cultured in rich broth supplemented with antibiotic (tetracycline, erythromycin, ampicillin or gentamicin) highlighted changes in resistance gene profiles, with amplification of previously undetected tet(O), erm(B) and mef genes and an increase in benthic enterococcal abundance after incubation in the presence of ampicillin and gentamicin. Despite being limited to a single farm, these data indicate that aquaculture may influence the abundance and spread of benthic enterococci and that farm sediments can be reservoirs of dormant antibiotic-resistant bacteria, including enterococci, which can rapidly revive in presence of new inputs of organic matter. This reservoir may constitute an underestimated health risk and deserves further investigation.
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Affiliation(s)
- Andrea Di Cesare
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy.
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Kwon KH, Hwang SY, Kim SH, Moon BY, Park BK, Yoon JW, Park YH. Characterization of Enterocccus faecalis
Isolates from the Pork Meat Production Chain and Comparison with Human Clinical Isolates. J Food Saf 2013. [DOI: 10.1111/jfs.12039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Ka Hee Kwon
- Department of Veterinary Medicine Bacteriology Laboratory and Brain Korea 21 Program for Veterinary Science; College of Veterinary Medicine; Seoul National University; San 56-1, Daehak-dong Seoul 151-742 Republic of Korea
| | - Sun Young Hwang
- Department of Veterinary Medicine Bacteriology Laboratory and Brain Korea 21 Program for Veterinary Science; College of Veterinary Medicine; Seoul National University; San 56-1, Daehak-dong Seoul 151-742 Republic of Korea
| | - So Hyun Kim
- Asia Pacific Foundation for Infectious Diseases (APFID); Seoul Republic of Korea
| | - Bo Youn Moon
- Department of Veterinary Medicine Bacteriology Laboratory and Brain Korea 21 Program for Veterinary Science; College of Veterinary Medicine; Seoul National University; San 56-1, Daehak-dong Seoul 151-742 Republic of Korea
| | - Bong Kyun Park
- Department of Veterinary Medicine Virology Laboratory and Brain Korea 21 Program for Veterinary Science; College of Veterinary Medicine; Seoul National University; Seoul Republic of Korea
| | - Jang Won Yoon
- Department of Veterinary Medicine Bacteriology Laboratory and Brain Korea 21 Program for Veterinary Science; College of Veterinary Medicine; Seoul National University; San 56-1, Daehak-dong Seoul 151-742 Republic of Korea
| | - Yong Ho Park
- Department of Veterinary Medicine Bacteriology Laboratory and Brain Korea 21 Program for Veterinary Science; College of Veterinary Medicine; Seoul National University; San 56-1, Daehak-dong Seoul 151-742 Republic of Korea
- Animal, Plant and Fisheries Quarantine and Inspection Agency; Anyang Gyeonggi Republic of Korea
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Aust C, Tolfvenstam T, Broliden K, Ljungman P, Kalin M, Giske CG, Öhrmalm L. Bacteremia in Swedish hematological patients with febrile neutropenia: bacterial spectrum and antimicrobial resistance patterns. ACTA ACUST UNITED AC 2012; 45:285-91. [PMID: 23113817 DOI: 10.3109/00365548.2012.735372] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND The etiology of bacteremia in hematological patients with febrile neutropenia differs geographically and changes over time. Since efficient empirical antibiotic treatment depends on relevant knowledge of the bacterial panorama, the aim of this study was to describe the prevalence of bacteremia, the bacterial spectrum, and the resistance patterns of the isolates in this group today. METHODS In a cross-sectional study, routine blood cultures from febrile episodes occurring in adult patients with hematological disorders and neutropenia presenting to Karolinska University Hospital, Stockholm, Sweden during a 24-month period, were analyzed. RESULTS A total of 142 febrile neutropenic episodes occurring in 124 hematological patients were included in the study. Bacteremia was documented in 27% of the episodes, and of these, 58% were due to Gram-positive pathogens. The most common isolates were viridans streptococci, coagulase-negative staphylococci, and Escherichia coli. Low levels of antibiotic resistance were detected. The underlying diagnosis of non-Hodgkin's lymphoma (NHL) was independently negatively associated with documented bacteremia (p < 0.01). CONCLUSIONS The prevalence of bacteremia and the bacterial spectrum were consistent with recent Scandinavian reports. Substantially lower levels of antimicrobial resistance were registered compared to those found in other European centers. Patients with NHL were less likely to have documented bacteremia in this study.
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Affiliation(s)
- Carl Aust
- Department of Medicine, Solna, Infectious Disease Unit, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
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Kwon KH, Hwang SY, Moon BY, Park YK, Shin S, Hwang CY, Park YH. Occurrence of antimicrobial resistance and virulence genes, and distribution of enterococcal clonal complex 17 from animals and human beings in Korea. J Vet Diagn Invest 2012; 24:924-31. [PMID: 22855376 DOI: 10.1177/1040638712455634] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Enterococci are major zoonotic bacteria that cause opportunistic infections in human beings and animals. Moreover, pathogenic strains can be disseminated between human beings and animals, particularly companion animals that come into frequent contact with people. Recently, Enterococcus faecium clonal complex 17 (CC17) has emerged as a pandemic clone. Most CC17 strains are ampicillin resistant and possess virulence genes such as esp and hyl. Despite the possible dissemination of CC17 between human beings and animals, prevalence data about CC17 in animals is limited. In the present study, the phenotypes and genotypes of antimicrobial resistance were compared, as well as virulence gene profiles from 184 enterococci strains isolated from chickens, pigs, companion animals, and human patients in Korea. Ampicillin-resistant E. faecium (AREF) strains were selected, and multilocus sequence typing was performed to investigate the dispersion of CC17 among animals and human beings. The companion animal and human isolates showed high resistance rates to ampicillin and ciprofloxacin, whereas food animal isolates showed high tetracycline and erythromycin resistance rates. Ampicillin-resistant E. faecium was only detected in human (21/21 E. faecium, 100%) and companion animal (3/5 E. faecium, 60%) isolates, and all human AREF strains and 1 canine AREF strain were confirmed as CC17. In conclusion, the occurrence of antimicrobial resistance and virulence genes, and the distribution of enterococcal CC17 in companion animal enterococcal strains were similar to those of human strains rather than to those of food animal strains.
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Affiliation(s)
- Ka Hee Kwon
- Department of Veterinary Microbiology and Brain Korea 21 Program for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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Alexander S, Nieder M, Zerr DM, Fisher BT, Dvorak CC, Sung L. Prevention of bacterial infection in pediatric oncology: what do we know, what can we learn? Pediatr Blood Cancer 2012; 59:16-20. [PMID: 22102612 PMCID: PMC4008322 DOI: 10.1002/pbc.23416] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 10/11/2011] [Indexed: 11/10/2022]
Abstract
Bacterial sepsis continues to be a leading cause of morbidity and toxic death in children receiving intensive therapy for cancer. Empiric therapy for suspected infections and treatment of documented infections are well-established standards of care. The routine use of prophylactic strategies is much less common in pediatric oncology. This paper will review the current literature on the use and risks of antimicrobial prophylaxis as well as non-pharmacological methods for infection prevention and will address areas in need of further research.
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Affiliation(s)
- Sarah Alexander
- Division of Hematology/Oncology, Hospital for Sick Children, Toronto, Ontario, Canada.
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Di Cesare A, Vignaroli C, Luna GM, Pasquaroli S, Biavasco F. Antibiotic-resistant enterococci in seawater and sediments from a coastal fish farm. Microb Drug Resist 2012; 18:502-9. [PMID: 22546011 DOI: 10.1089/mdr.2011.0204] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of this study was to detect and characterize antibiotic-resistant enterococci in seawater and sediment from a Mediterranean aquaculture site where no antibiotics are used. Colonies (650) grown on Slanetz-Bartley (SB) agar were amplified on antibiotic-supplemented SB, and erythromycin (ERY), tetracycline (TET), and ampicillin (AMP) MICs were determined. Of 75 resistant isolates (17 to TET, 5 to ERY, and 45 to AMP), 5 Enterococcus faecalis, 25 E. faecium, 5 E. casseliflavus, 1 E. gallinarum, 1 E. durans, and 23 Enterococcus spp. were identified by genus- and species-specific polymerase chain reaction (PCR). tet(M), tet(O), tet(L), tet(K), erm(B), erm(A), erm(C), mef, msr, blaZ, and int(Tn916) were sought by PCR, including an improved multiplex PCR assay targeting tet(M), tet(L), and erm(B). Tet(M) was the most frequent TET resistance gene; msr(C) was the sole ERY resistance gene detected. blaZ was found in 29/45 AMP-resistant isolates; however, no β-lactamase production was detected. Antibiotic-resistant enterococci were recovered 2 km off the coast despite the absence of selective pressure exerted by antibiotic use. The occurrence of resistant strains in the absence of the tested genes may indicate the presence of less common resistance determinants. This first evidence of resistant enterococci at a Mediterranean aquaculture site suggests the existence of a marine reservoir of antibiotic resistances potentially transmissible to virulent strains that could be affected by mariculture in an antibiotic-independent manner.
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Affiliation(s)
- Andrea Di Cesare
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
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Kvakkestad KM, Gammelsrud KW, Brandtzaeg P, Høiby EA. Unchanged antibiotic susceptibility in Escherichia coli and Pseudomonas aeruginosa after long-term in vitro exposure to antineoplastic drugs. Chemotherapy 2012; 58:118-22. [PMID: 22507969 DOI: 10.1159/000337058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 02/05/2012] [Indexed: 11/19/2022]
Abstract
BACKGROUND Certain antineoplastic drugs inhibit bacterial growth. Whether these drugs also cause genetic changes in bacteria that lead to increased antibiotic resistance is not yet documented. Given the massive and repeated antibiotic treatment most cancer patients undergo, this question is important. We have examined the possible effects of in vitro long-term antineoplastic exposure on antibiotic resistance. METHODS Using the disc diffusion method, two bacterial strains (Escherichia coli, ATCC 25922, and Pseudomonas aeruginosa, ATCC 27583) were exposed to methotrexate, fluorouracil, vincristine, doxorubicin and cytarabine during 50 overnight cycles. The bacterial strains were susceptibility-tested to several antibiotics before and after repeated exposure to antineoplastics. RESULTS No changes in antibiotic susceptibility were seen in the two bacterial strains after long-term exposure to any of the antineoplastic drugs tested. CONCLUSION Long-term in vitro antineoplastic exposure did not change the antibiotic susceptibility in the E. coli or P. aeruginosa strains.
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Kjellander C, Björkholm M, Cherif H, Kalin M, Giske CG. Hematological: Low all-cause mortality and low occurrence of antimicrobial resistance in hematological patients with bacteremia receiving no antibacterial prophylaxis: a single-center study. Eur J Haematol 2012; 88:422-30. [PMID: 22335785 DOI: 10.1111/j.1600-0609.2012.01768.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Bacteremia is a major cause of morbidity and mortality in patients with hematological malignancies. OBJECTIVES The aim of this study was to define temporal trends in species distribution, antimicrobial susceptibility, and all-cause mortality in bacteremic hospitalized patients receiving no antibacterial prophylaxis during chemotherapy-induced neutropenia. METHODS A total of 677 clinical episodes of bacteremia were identified in 463 patients during 2002-2008, and the results were compared with those published from the same institution during 1980-86 and 1988-2001. No major changes in patient selection were introduced during this period. RESULTS Between 2002 and 2008, the dominating pathogens were Escherichia coli (18%), coagulase-negative staphylococci (15%), viridans streptococci (14%), Klebsiella spp. (10%), and Enterococcus faecium (8%). The 7-d crude mortality rate was 5.2%. Polymicrobial bacteremia was seen in 25.7% of the patients who died within 7 d and in 13.1% of the survivors (P = 0.04). Acquired resistance was rarely observed, but a statistically significant increase in ciprofloxacin resistance in E. coli was observed. Comparing 2002-2008 with historical data from the same institution, the proportion of Gram-positive isolates remained stable at 53-55% from 1988. CONCLUSIONS The avoidance of fluoroquinolone prophylaxis may have contributed to a stable proportion of Gram-positive bacteremia. The crude mortality was low in an international perspective. Acquired resistance was uncommon, but ciprofloxacin resistance in E. coli increased significantly. We believe that an indiscriminate use of antibacterial prophylaxis could be avoided in neutropenic patients without a negative impact on mortality.
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Affiliation(s)
- Christian Kjellander
- Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden.
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Cattaneo C, Antoniazzi F, Casari S, Ravizzola G, Gelmi M, Pagani C, D'Adda M, Morello E, Re A, Borlenghi E, Manca N, Rossi G. P. aeruginosa bloodstream infections among hematological patients: an old or new question? Ann Hematol 2012; 91:1299-304. [PMID: 22349723 DOI: 10.1007/s00277-012-1424-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 02/01/2012] [Indexed: 10/14/2022]
Abstract
Pseudomonas aeruginosa is a well-known cause of severe and potentially life-threatening infections among hematological patients. A prospective epidemiological surveillance program ongoing at our Hematology Unit revealed an increase over time of P. aeruginosa bloodstream infections (BSI). Their impact on outcome and antibiotic susceptibility was analyzed. BSI which consecutively occurred at our institution during a 70-month period were evaluated and correlated with type of pathogen, status of underlying disease, neutropenia, previous antibiotic therapy, resistance to antibiotics, and outcome. During the observation period, 441 BSI were recorded. Frequency of Gram-negative BSI was higher than that of other pathogens (57.3%). Overall, 66 P. aeruginosa BSI were recorded; 22 out of 66 were multiresistant (MR P. aeruginosa). Thirty-day mortality for all BSI was 11.3%; it was 27.3% for P. aeruginosa BSI and 36.4% for MR P. aeruginosa. At multivariate analysis, only active hematological disease and P. aeruginosa BSI were associated to an increased risk of death. For MR P. aeruginosa, BSI mortality was 83.3% vs. 18.8% when empiric therapy included or not an antibiotic with in vitro activity against P. aeruginosa (p=0.011). Together with active disease, the emergence of P. aeruginosa BSI, particularly if multiresistant, was responsible for an increased risk of death among hematological patients at our institution. In this scenario, reconsidering the type of combination antibiotic therapy to be used as empiric treatment of neutropenic fever was worthwhile.
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Affiliation(s)
- Chiara Cattaneo
- Dept. of Haematology, Spedali Civili, Piazza Spedali Civili, 25100 Brescia, Italy.
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Empirical therapy with ceftazidime combined with levofloxacin or once-daily amikacin for febrile neutropenia in patients with neoplasia: a prospective comparative study. Eur J Clin Microbiol Infect Dis 2011; 31:1389-98. [DOI: 10.1007/s10096-011-1454-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 10/09/2011] [Indexed: 11/26/2022]
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Interaminense JA, Nascimento DCO, Ventura RF, Batista JEC, Souza MMC, Hazin FHV, Pontes-Filho NT, Lima-Filho JV. Recovery and screening for antibiotic susceptibility of potential bacterial pathogens from the oral cavity of shark species involved in attacks on humans in Recife, Brazil. J Med Microbiol 2010; 59:941-947. [PMID: 20413619 DOI: 10.1099/jmm.0.020453-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The number of incidents involving sharks and humans at beaches in Recife, on the north-eastern Brazilian coast, is among the highest worldwide. In addition, wound infections in survivors are common; but the nature and risk of the aetiological agents is unknown. In the present study, 81 potential bacterial pathogens were identified in the oral cavity of sharks involved in attacks in Recife, and were subjected to antibiotic susceptibility tests using the standardized disc-diffusion method. The majority were enterobacteria such as Enterobacter spp., Citrobacter spp., Proteus spp., Providencia alcalifaciens, Escherichia coli, Moellerella wisconcensis and Leclercia adecarboxylata. Other Gram-negative bacteria included Vibrio spp., Burkholderia cepacia, Acinetobacter spp. and Pseudomonas spp. In addition, coagulase-positive and coagulase-negative Staphylococcus spp., Enterococcus spp. and Micrococcus spp. were identified, besides Streptococcus spp. from the viridans group. Resistance was especially found in the Proteus mirabilis and Citrobacter freundii, and ranged from 4 to 6 antibiotics out of the 13 tested. Gentamicin and vancomycin were the most effective against Gram-positive cocci strains, whereas levofloxacin was fully inhibitory against Gram-positive and Gram-negative bacteria. These data are discussed in light of a retrospective evaluation of the medical records of three shark victims treated at Restauração Hospital in Recife.
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Affiliation(s)
- J A Interaminense
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - D C O Nascimento
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - R F Ventura
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - J E C Batista
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - M M C Souza
- Departamento de Pesca e Aqüicultura, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - F H V Hazin
- Departamento de Pesca e Aqüicultura, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - N T Pontes-Filho
- Departamento de Patologia, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - J V Lima-Filho
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
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