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Lee DS, Lee SJ, Choe HS. Community-Acquired Urinary Tract Infection by Escherichia coli in the Era of Antibiotic Resistance. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7656752. [PMID: 30356438 PMCID: PMC6178185 DOI: 10.1155/2018/7656752] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 08/19/2018] [Accepted: 09/09/2018] [Indexed: 01/27/2023]
Abstract
Urinary tract infections (UTIs) caused by Escherichia coli (E. coli) are the most common types of infections in women. The antibiotic resistance of E. coli is increasing rapidly, causing physicians to hesitate when selecting oral antibiotics. In this review, our objective is to ensure that clinicians understand the current seriousness of antibiotic-resistant E. coli, the mechanisms by which resistance is selected for, and methods that can be used to prevent antibiotic resistance.
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Affiliation(s)
- Dong Sup Lee
- Department of Urology, St. Vincent's Hospital, The Catholic University of Korea, College of Medicine, Republic of Korea
| | - Seung-Ju Lee
- Department of Urology, St. Vincent's Hospital, The Catholic University of Korea, College of Medicine, Republic of Korea
| | - Hyun-Sop Choe
- Department of Urology, St. Vincent's Hospital, The Catholic University of Korea, College of Medicine, Republic of Korea
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102
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Harris PNA, Tambyah PA, Lye DC, Mo Y, Lee TH, Yilmaz M, Alenazi TH, Arabi Y, Falcone M, Bassetti M, Righi E, Rogers BA, Kanj S, Bhally H, Iredell J, Mendelson M, Boyles TH, Looke D, Miyakis S, Walls G, Al Khamis M, Zikri A, Crowe A, Ingram P, Daneman N, Griffin P, Athan E, Lorenc P, Baker P, Roberts L, Beatson SA, Peleg AY, Harris-Brown T, Paterson DL. Effect of Piperacillin-Tazobactam vs Meropenem on 30-Day Mortality for Patients With E coli or Klebsiella pneumoniae Bloodstream Infection and Ceftriaxone Resistance: A Randomized Clinical Trial. JAMA 2018; 320:984-994. [PMID: 30208454 PMCID: PMC6143100 DOI: 10.1001/jama.2018.12163] [Citation(s) in RCA: 474] [Impact Index Per Article: 79.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
IMPORTANCE Extended-spectrum β-lactamases mediate resistance to third-generation cephalosporins (eg, ceftriaxone) in Escherichia coli and Klebsiella pneumoniae. Significant infections caused by these strains are usually treated with carbapenems, potentially selecting for carbapenem resistance. Piperacillin-tazobactam may be an effective "carbapenem-sparing" option to treat extended-spectrum β-lactamase producers. OBJECTIVES To determine whether definitive therapy with piperacillin-tazobactam is noninferior to meropenem (a carbapenem) in patients with bloodstream infection caused by ceftriaxone-nonsusceptible E coli or K pneumoniae. DESIGN, SETTING, AND PARTICIPANTS Noninferiority, parallel group, randomized clinical trial included hospitalized patients enrolled from 26 sites in 9 countries from February 2014 to July 2017. Adult patients were eligible if they had at least 1 positive blood culture with E coli or Klebsiella spp testing nonsusceptible to ceftriaxone but susceptible to piperacillin-tazobactam. Of 1646 patients screened, 391 were included in the study. INTERVENTIONS Patients were randomly assigned 1:1 to intravenous piperacillin-tazobactam, 4.5 g, every 6 hours (n = 188 participants) or meropenem, 1 g, every 8 hours (n = 191 participants) for a minimum of 4 days, up to a maximum of 14 days, with the total duration determined by the treating clinician. MAIN OUTCOMES AND MEASURES The primary outcome was all-cause mortality at 30 days after randomization. A noninferiority margin of 5% was used. RESULTS Among 379 patients (mean age, 66.5 years; 47.8% women) who were randomized appropriately, received at least 1 dose of study drug, and were included in the primary analysis population, 378 (99.7%) completed the trial and were assessed for the primary outcome. A total of 23 of 187 patients (12.3%) randomized to piperacillin-tazobactam met the primary outcome of mortality at 30 days compared with 7 of 191 (3.7%) randomized to meropenem (risk difference, 8.6% [1-sided 97.5% CI, -∞ to 14.5%]; P = .90 for noninferiority). Effects were consistent in an analysis of the per-protocol population. Nonfatal serious adverse events occurred in 5 of 188 patients (2.7%) in the piperacillin-tazobactam group and 3 of 191 (1.6%) in the meropenem group. CONCLUSIONS AND RELEVANCE Among patients with E coli or K pneumoniae bloodstream infection and ceftriaxone resistance, definitive treatment with piperacillin-tazobactam compared with meropenem did not result in a noninferior 30-day mortality. These findings do not support use of piperacillin-tazobactam in this setting. TRIAL REGISTRATION anzctr.org.au Identifiers: ACTRN12613000532707 and ACTRN12615000403538 and ClinicalTrials.gov Identifier: NCT02176122.
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Affiliation(s)
- Patrick N. A. Harris
- University of Queensland, UQ Centre for Clinical Research, Brisbane, Queensland, Australia
- Department of Microbiology, Pathology Queensland, Royal Brisbane and Women’s Hospital, Brisbane, Queensland, Australia
- Infection Management Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Paul A. Tambyah
- Department of Infectious Diseases, National University Hospital, Singapore
| | - David C. Lye
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Infectious Diseases, Institute of Infectious Diseases and Epidemiology, Tan Tock Seng Hospital, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Yin Mo
- Department of Infectious Diseases, National University Hospital, Singapore
| | - Tau H. Lee
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Infectious Diseases, Institute of Infectious Diseases and Epidemiology, Tan Tock Seng Hospital, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Mesut Yilmaz
- Department of Infectious Diseases and Clinical Microbiology, School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Thamer H. Alenazi
- King Saud Bin Abdulaziz University for Health Sciences and King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Yaseen Arabi
- King Saud Bin Abdulaziz University for Health Sciences and King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Marco Falcone
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, Italy
| | - Matteo Bassetti
- Infectious Diseases Clinic, Department of Medicine University of Udine and Santa Maria Misericordia Hospital, Udine, Italy
| | - Elda Righi
- Infectious Diseases Clinic, Department of Medicine University of Udine and Santa Maria Misericordia Hospital, Udine, Italy
| | - Benjamin A. Rogers
- Monash University, Centre for Inflammatory Diseases, Melbourne, Victoria, Australia
- Monash Infectious Diseases, Monash Health, Melbourne, Victoria, Australia
| | - Souha Kanj
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Hasan Bhally
- Department of Medicine and Infectious Diseases, North Shore Hospital, Auckland, New Zealand
| | - Jon Iredell
- Marie Bashir Institute for Infectious Disease and Biosecurity, University of Sydney, Sydney, New South Wales, Australia
- Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Marc Mendelson
- Division of Infectious Diseases & HIV Medicine, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Tom H. Boyles
- Division of Infectious Diseases & HIV Medicine, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - David Looke
- Infection Management Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- University of Queensland, Brisbane, Queensland, Australia
| | - Spiros Miyakis
- School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia
- Illawarra Health and Medical Research Institute, Wollongong, New South Wales, Australia
- Department of Infectious Diseases, Wollongong Hospital, Wollongong, New South Wales, Australia
| | - Genevieve Walls
- Department of Infectious Diseases, Middlemore Hospital, Auckland, New Zealand
| | | | - Ahmed Zikri
- King Fahad Specialist Hospital, Dammam, Saudi Arabia
| | - Amy Crowe
- Department of Infectious Diseases, St Vincent’s Hospital, Melbourne, Victoria, Australia
- Department of Microbiology, St Vincent’s Hospital, Melbourne, Victoria, Australia
| | - Paul Ingram
- School of Pathology and Laboratory Medicine, The University of Western Australia, Crawley, Australia
- Department of Infectious Diseases, Fiona Stanley Hospital, Murdoch, Australia
- Department of Microbiology, PathWest Laboratory Medicine, Perth, Western Australia
| | - Nick Daneman
- Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Paul Griffin
- University of Queensland, Brisbane, Queensland, Australia
- Department of Medicine and Infectious Diseases, Mater Hospital and Mater Medical Research Institute, Brisbane, Queensland, Australia
- QIMR Berghofer, Brisbane, Queensland, Australia
| | - Eugene Athan
- Department of Infectious Diseases, Barwon Health and Deakin University, Geelong, Victoria, Australia
| | - Penelope Lorenc
- University of Queensland, UQ Centre for Clinical Research, Brisbane, Queensland, Australia
| | - Peter Baker
- School of Public Health, University of Queensland, Brisbane, Queensland, Australia
| | - Leah Roberts
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Queensland, Australia
| | - Scott A. Beatson
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Queensland, Australia
| | - Anton Y. Peleg
- Infection & Immunity Program, Biomedicine Discovery Institute, Monash University, Clayton, Australia
- Department of Microbiology, Monash University, Clayton, Australia
- Department of Infectious Diseases, Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Tiffany Harris-Brown
- University of Queensland, UQ Centre for Clinical Research, Brisbane, Queensland, Australia
| | - David L. Paterson
- University of Queensland, UQ Centre for Clinical Research, Brisbane, Queensland, Australia
- Department of Infectious Diseases, Royal Brisbane and Women’s Hospital, Brisbane, Queensland, Australia
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Long B, Koyfman A. The Emergency Department Diagnosis and Management of Urinary Tract Infection. Emerg Med Clin North Am 2018; 36:685-710. [PMID: 30296999 DOI: 10.1016/j.emc.2018.06.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Urinary tract infection (UTI) is a common infection seen in the emergency department. The spectrum of UTI includes simple versus complicated infection and lower versus upper UTI. No one history or examination finding is definitive for diagnosis. Testing often includes urinalysis and/or urine dipstick, and several pitfalls may occur in interpretation. Urine cultures should be obtained in complicated or upper UTIs but not simple and lower tract UTIs, unless a patient is pregnant. Imaging often is not required. Most patients with simple cystitis and pyelonephritis are treated as outpatients. A variety of potentially dangerous conditions may mimic UTI and pyelonephritis.
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Affiliation(s)
- Brit Long
- Department of Emergency Medicine, San Antonio Military Medical Center, 3841 Roger Brooke Drive, Fort Sam Houston, TX 78234, USA.
| | - Alex Koyfman
- Department of Emergency Medicine, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
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104
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Combination of aztreonam and cefotaxime against CTX-M-15 type β-lactamases: A mechanism based effective therapeutic approach. Int J Biol Macromol 2018; 116:1186-1195. [DOI: 10.1016/j.ijbiomac.2018.05.153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 11/23/2022]
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105
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Islam S, Selvarangan R, Kanwar N, McHenry R, Chappell JD, Halasa N, Wikswo ME, Payne DC, Azimi PH, McDonald LC, Gomez-Duarte OG. Intestinal Carriage of Third-Generation Cephalosporin-Resistant and Extended-Spectrum β-Lactamase-Producing Enterobacteriaceae in Healthy US Children. J Pediatric Infect Dis Soc 2018; 7:234-240. [PMID: 28992133 PMCID: PMC5820225 DOI: 10.1093/jpids/pix045] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 05/12/2017] [Indexed: 01/16/2023]
Abstract
BACKGROUND The epidemiology of antibiotic-resistant Enterobacteriaceae intestinal carriage in healthy US children has not been well characterized. METHODS Children between 14 days and 14 years of age were enrolled during well-child visits in Oakland, California, Kansas City, Kansas, and Nashville, Tennessee, between December 2013 and March 2015. Data on recent antibiotic use by the child and travel and hospitalization history of all members of each child's household were obtained with a risk-factor survey. Stool specimens collected from the subjects were screened for extended-spectrum β-lactamase-producing (ESBL-P) bacteria using CHROMagar ESBL medium. Putative ESBL-P Escherichia coli and Klebsiella colonies underwent phenotypic confirmation by double-disk synergy testing; confirmed third-generation cephalosporin-resistant (3GCR) isolates underwent additional antibiotic-susceptibility testing. RESULTS In 519 subjects, the overall 3GCR Enterobacteriaceae carriage rate was 4.4% (n = 23) and ranged from 3.4% to 5.1% among the study sites. The ESBL-P Enterobacteriaceae carriage rate was 3.5% (n = 18). The rates of 3GCR Enterobacteriaceae carriage was highest in 1 to <2 year olds at 6.5%, and was 5.2% in <5 year-olds vs 1.7% in ≥5-year-olds (P = .11). 3GCR and ESBL-P Enterobacteriaceae carriage was associated with international travel within the previous year; 11.1% of ESBL-P Enterobacteriaceae carriers reported this history compared with 1.6% of noncarriers (P = .004). No other queried factor was found to increase risk. Of the 24 analyzed 3GCR isolates, 58% were multidrug resistant. CONCLUSIONS The 3GCR Enterobacteriaceae carriage rate exceeds 5% in healthy US children <5 years of age. International travel within the previous year increased the risk of 3GCR and ESBL-P Enterobacteriaceae carriage. In contrast, we found no differences in the rates of hospitalization or recent antibiotic exposure between carriers and noncarriers. Young children, who have the highest prevalence of colonization, might be a sentinel population to study to gain a better understanding of community sources of antibiotic-resistant Enterobacteriaceae.
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Affiliation(s)
- Shamim Islam
- University at Buffalo, State University of New York
| | - Rangaraj Selvarangan
- Children’s Mercy Hospital, Kansas City, Missouri,University of Missouri, Kansas City School of Medicine
| | - Neena Kanwar
- Children’s Mercy Hospital, Kansas City, Missouri
| | - Rendie McHenry
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - James D. Chappell
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Natasha Halasa
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Mary E. Wikswo
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Daniel C. Payne
- Centers for Disease Control and Prevention, Atlanta, Georgia
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106
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Ye Q, Wu Q, Zhang S, Zhang J, Yang G, Wang J, Xue L, Chen M. Characterization of Extended-Spectrum β-Lactamase-Producing Enterobacteriaceae From Retail Food in China. Front Microbiol 2018; 9:1709. [PMID: 30135680 PMCID: PMC6092486 DOI: 10.3389/fmicb.2018.01709] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 07/09/2018] [Indexed: 01/21/2023] Open
Abstract
In this study, we characterized the β-lactamase genes and phenotypic resistance of cephalosporin-resistant Enterobacteriaceae isolated from retail foods in China. Of 1,024 Enterobacteriaceae isolates recovered from raw meat products, aquatic products, raw vegetables, retail-level ready-to-eat (RTE) foods, frozen foods, and mushrooms from 2011 to 2014, 164 (16.0%) showed cefotaxime (CTX) and/or ceftazidime (CAZ) cephalosporin resistance, and 96 (9.4%) showed the extended-spectrum β-lactamase (ESBL) phenotype. More than 30% isolates were resistant to all antimicrobial agents except carbapenems (MEM 3.1% and IPM 5.2%), cefoxitin (FOX 6.3%), and amoxicillin/clavulanic acid (AMC 26%), and 94.8% of the strains were resistant to up to seven antibiotics. Polymerase chain reaction analysis showed that blaTEM (81.9%) was the most common gene, followed by blaCTX-M (68.1%) and blaSHV (38.9%). Moreover, 16.8% (72/429) of food samples contained ESBL-positive Enterobacteriaceae, with the following patterns: 32.9% (23/70) in frozen foods, 27.2% (5/29) in mushrooms, 17.6% (24/131) in raw meats, 13.3% (4/30) in fresh vegetables, 11.1% (8/72) in RTE foods, and 9.3% (9/97) in aquatic products. In addition, 24 of 217 foods collected in South China (11.1%), 25 of 131 foods collected in North of the Yangtze River region (19.1%), and 23 of 81 foods collected in South of the Yangtze River region (28.4%) were positive for ESBL- Enterobacteriaceae. Conjugation experiments demonstrated that the 22 of 72 isolates were transconjugants that had received the β-lactamase gene and were resistant to β-lactam antibiotics as well as some non-β-lactam antibiotics. These findings demonstrated that retail foods may be reservoirs for the dissemination of β-lactam antibiotics and that resistance genes could be transmitted to humans through the food chain; and the predominant ESBL-producing Enterobacteriaceae in China was isolated from in frozen chicken-meat, followed by frozen pork, cold noodles in sauce, cucumber, raw chicken meat, frozen pasta, brine-soaked chicken and tomato.
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Affiliation(s)
- Qinghua Ye
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Qingping Wu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Shuhong Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Jumei Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Guangzhu Yang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Juan Wang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China.,College of Food Science, South China Agricultural University, Guangzhou, China
| | - Liang Xue
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Moutong Chen
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
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107
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Development and validation of a bedside instrument to predict carbapenem resistance among gram-negative pathogens in complicated urinary tract infections. Infect Control Hosp Epidemiol 2018; 39:1112-1114. [DOI: 10.1017/ice.2018.166] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AbstractWe developed a bedside instrument to predict carbapenem resistance in complicated urinary tract infections. A model assigning weighted points for admission from an extended care facility (1), history of weight loss (1), early mechanical ventilation (1), age <50 years (2), male gender (3), catheter-associated urinary tract infection (4), prior antibiotics treatment (4), and prior carbapenem-resistant infection (8) exhibited good discrimination (C statistic, 0.721).
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108
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Delpech G, Allende NG, Lissarrague S, Sparo M. Antimicrobial Resistance of Uropathogenic Escherichia coli from Elderly Patients at a General Hospital, Argentina. ACTA ACUST UNITED AC 2018. [DOI: 10.2174/1874279301810010079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:Urinary Tract Infection (UTI) is a common cause of morbidity and mortality in older adults.Objective:To investigate antimicrobial resistance of uropathogenicEscherichia colifrom elderly patients in a General Hospital, Argentina.Method:During the period July 2011-July 2015, patients over 70 years old with urinary tract infections, without urinary catheters and with no antimicrobial therapy the previous week before sampling, were included. Phenotypic characterization was carried out.In vitroqualitative and quantitative antimicrobial resistances were investigated. Antimicrobials assayed: ampicillin, amoxicillin-clavulanate, cefazolin, cefuroxime, cefoxitin, cefotaxime, ceftazidime, cefepime, imipenem, ertapenem, gentamicin, nalidixic acid, ciprofloxacin, trimethoprim-sulfamethoxazole (TMS) and nitrofurantoin. Patients’ medical records were produced, and risk factors were analyzed by multivariate analysis.Results:768 bacterial isolates were identified asE. coli. Resistances to ampicillin (80.5%), nalidixic acid (61.7%), ciprofloxacin (42.8%), TMS (37.6%), amoxicillin-clavulanate (28.6%), cefazolin (21.6%), cefuroxime (20.7%), gentamicin (13.8%), cefotaxime (9.7%), ceftazidime (9.7%), cefepime (8.4%), cefoxitin (3.1%) and nitrofurantoin (2.3%) were observed. Resistance to carbapenems was not expressed. Production of extended spectrum β-lactamases was detected (7.6%) in community acquired (96%) and healthcare associated (4%) isolates. The independent risk factors for urinary infections produced by multi-resistantE. coliwere: diabetes mellitus, recurrent infections, hospitalization during the last year and exposure to β-lactams in the last 3 months.Conclusion:A high prevalence of resistance to β-lactams and to other antimicrobials was observed. Detection of antimicrobial multi-resistant isolates highlights the need of antimicrobial resistance surveillance in elderly patients with urinary tract infections.
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109
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Frazee BW, Trivedi T, Montgomery M, Petrovic DF, Yamaji R, Riley L. Emergency Department Urinary Tract Infections Caused by Extended-Spectrum β-Lactamase-Producing Enterobacteriaceae: Many Patients Have No Identifiable Risk Factor and Discordant Empiric Therapy Is Common. Ann Emerg Med 2018; 72:449-456. [PMID: 29980462 DOI: 10.1016/j.annemergmed.2018.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/19/2018] [Accepted: 05/02/2018] [Indexed: 10/28/2022]
Abstract
STUDY OBJECTIVE Community-onset urinary tract infections (UTIs) caused by extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae, which are resistant to ceftriaxone and usually coresistant to fluoroquinolones, are increasing worldwide. We investigate and describe in detail UTIs caused by ESBL-producing Enterobacteriaceae in our emergency department (ED), and determine the proportion that occurred in patients without health care-associated risk factors and who received discordant initial antibiotic therapy. METHODS At an urban public hospital in Northern California, microbiology staff prospectively reviewed ED urine culture results weekly for 1 year and presumptively identified ESBL-producing isolates by ceftriaxone plus ceftazidime resistance. For isolates associated with a clinical UTI, patient demographic and case clinical features were abstracted retrospectively. Health care-associated infections were defined by standard risk factors plus aged 65 years or older, bladder catheter, urologic procedure, functional dependence, or antibiotics in the previous 90 days. Community-associated infections were defined by absence of these. A subset of community-associated ESBL-producing Escherichia coli isolates underwent genotyping. Electronic health record query was used to determine the denominator of ED UTI patients who underwent urine culture during the study period. RESULTS Between August 2016 and July 2017, there were 1,045 unique ED patients diagnosed with a UTI, whose specimens underwent culture. There were 62 ESBL-producing isolates (5.9%; 95% confidence interval [CI] 4.6% to 7.5%). Selected characteristics of the entire ESBL UTI cohort were median age 50 years, 37 (60%) patients were women, 28 (44%) Hispanic, 11 (18%) had been hospitalized in the previous 3 months, 19 (31%) had pyelonephritis, 49 (79%) of isolates were E coli, 44 (71%) were levofloxacin-resistant, and 24 (23%) nitrofurantoin-resistant. Initial antibiotic choice was discordant with isolate susceptibility in 26 of 56 cases (46%; 95% CI 33% to 60%), and the initial oral antibiotic prescred was discordant in 19 of 41 cases (46%; 95% CI 31% to 63%). Twenty-seven infections (44%; 95% CI 31% to 57%) were categorized as community-associated. Eight patients with community-associated infection were women younger than 50 years, with no comorbidities and no more than 1 UTI in the previous year. Of 12 community-associated E coli isolates tested, all were confirmed to harbor ESBL genes; the CTX-M1 β-lactamase gene was found in 8 (67%); 4 belong to genotype ST131. CONCLUSION At this single Northern California ED, greater than 5% of culture-proven UTI were caused by ESBL-producing Enterobacteriaceae, and in nearly half of cases there was no identifiable health care-associated risk factor. Levofloxacin co-resistance and discordant antibiotic therapy were common.
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Affiliation(s)
- Bradley W Frazee
- Department of Emergency Medicine, Alameda Health System, Highland Hospital, Oakland, CA.
| | - Tarak Trivedi
- University of California-Los Angeles National Clinical Scholars Program, Veterans Administration, Greater Los Angeles Healthcare System, Los Angeles, CA
| | - Martha Montgomery
- Department of Emergency Medicine, Alameda Health System, Highland Hospital, Oakland, CA
| | | | - Reina Yamaji
- School of Public Health, University of California, Berkeley, Berkeley, CA
| | - Lee Riley
- School of Public Health, University of California, Berkeley, Berkeley, CA
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110
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Wilson H, Török ME. Extended-spectrum β-lactamase-producing and carbapenemase-producing Enterobacteriaceae. Microb Genom 2018; 4:e000197. [PMID: 30035710 PMCID: PMC6113871 DOI: 10.1099/mgen.0.000197] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 06/19/2018] [Indexed: 12/12/2022] Open
Abstract
Antimicrobial resistance (AMR) is a global public-health emergency, which threatens the advances made by modern medical care over the past century. The World Health Organization has recently published a global priority list of antibiotic-resistant bacteria, which includes extended-spectrum β-lactamase-producing Enterobacteriaceae and carbapenemase-producing Enterobacteriaceae. In this review, we highlight the mechanisms of resistance and the genomic epidemiology of these organisms, and the impact of AMR.
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Affiliation(s)
- Hayley Wilson
- Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK
| | - M. Estée Török
- Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
- Clinical Microbiology and Public Health Laboratory, Public Health England, Cambridge, UK
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111
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Gandra S, Trett A, Klein EY, Laxminarayan R. Is Antimicrobial Resistance a Bigger Problem in Tertiary Care Hospitals Than in Small Community Hospitals in the United States? Clin Infect Dis 2018; 65:860-863. [PMID: 28472253 DOI: 10.1093/cid/cix413] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/03/2017] [Indexed: 11/13/2022] Open
Abstract
Large tertiary care hospitals (TCHs) are thought to have higher antimicrobial resistance (AMR) rates when compared to small community hospitals (SCHs) as they provide care to patients with higher disease severity. However, we found no systematic differences in AMR rates between TCHs and SCHs in the United States.
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Affiliation(s)
- Sumanth Gandra
- Center for Disease Dynamics, Economics & Policy, New Delhi, India
| | - Anna Trett
- Center for Disease Dynamics, Economics & Policy, New Delhi, India
| | - Eili Y Klein
- Center for Disease Dynamics, Economics & Policy, Washington, DC.,Johns Hopkins University, Department of Emergency Medicine, Baltimore, Maryland
| | - Ramanan Laxminarayan
- Center for Disease Dynamics, Economics & Policy, Washington, DC.,Princeton Environmental Institute, New Jersey
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112
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Huang YY, Wintner A, Seed PC, Brauns T, Gelfand JA, Hamblin MR. Antimicrobial photodynamic therapy mediated by methylene blue and potassium iodide to treat urinary tract infection in a female rat model. Sci Rep 2018; 8:7257. [PMID: 29740035 PMCID: PMC5940872 DOI: 10.1038/s41598-018-25365-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 04/17/2018] [Indexed: 12/29/2022] Open
Abstract
Drug-resistant urinary tract infections (UTIs) are difficult and sometimes impossible to treat. Many UTIs are caused by uropathogenic Escherichia coli (UPEC). We developed an intact rat model of UTI, by catheterizing female rats and introducing a bioluminescent UPEC strain into the female rat bladder which lasted for up to six days. We recently showed that antimicrobial photodynamic inactivation (aPDI) of a bacterial infection mediated by the well-known phenothiazinium salt, methylene blue (MB) could be strongly potentiated by addition of the non-toxic salt potassium iodide (KI). In the intact rat model we introduced MB into the bladder by catheter, followed by KI solution and delivered intravesicular illumination with a diffusing fiber connected to a 1 W 660 nm laser. Bioluminescent imaging of the bacterial burden was carried out during the procedure and for 6 days afterwards. Light-dose dependent loss of bioluminescence was observed with the combination of MB followed by KI, but recurrence of infection was seen the next day in some cases. aPDT with MB + KI gave a significantly shorter duration of infection compared to untreated controls. aPDT with MB alone was the least effective. No signs of aPDT damage to the bladder lining were detected. This procedure to treat urinary tract infections without antibiotics by using already approved pharmaceutical substances (MB and KI) may have clinical applicability, either initially as a stand-alone therapy, or as an adjunct to antibiotic therapy by a rapid and substantial reduction of the bacterial burden.
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Affiliation(s)
- Ying-Ying Huang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA.,Department of Dermatology, Harvard Medical School, Boston, MA, 02115, USA
| | - Anton Wintner
- Department of Urology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Patrick C Seed
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Timothy Brauns
- Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Jeffrey A Gelfand
- Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA.
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA. .,Department of Dermatology, Harvard Medical School, Boston, MA, 02115, USA. .,Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, 02139, USA.
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113
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Chong Y, Shimoda S, Shimono N. Current epidemiology, genetic evolution and clinical impact of extended-spectrum β-lactamase-producing Escherichia coli and Klebsiella pneumoniae. INFECTION GENETICS AND EVOLUTION 2018; 61:185-188. [PMID: 29626676 DOI: 10.1016/j.meegid.2018.04.005] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 01/01/2023]
Abstract
The worldwide spread of extended-spectrum β-lactamase (ESBL)-producing bacteria, particularly Escherichia coli and Klebsiella pneumoniae, is a critical concern for the development of therapies against multidrug-resistant bacteria. Since the 2000s, detection rates of CTX-M types ESBL-producing E. coli in the community have been high, possibly contributing to their nosocomial detection. Various factors, such as environmental sources, food animals, and international travel, accelerate the global ESBL spread in the community. The dramatic dissemination of ESBLs in the community is associated with the relatively recent emergence of CTX-M-15-producing ST131 E. coli clones, which often carry many other antibiotic resistance genes (including quinolone). The usefulness of β-lactam/β-lactamase inhibitor, particularly, piperacillin/tazobactam, has been considered as a carbapenem-sparing regimen for ESBL infections, although the global trend of AmpC β-lactamase-producing bacteria should be monitored carefully. Careful therapeutic selection and continued surveillance for the detection of multidrug-resistant bacteria are required.
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Affiliation(s)
- Yong Chong
- Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan.
| | - Shinji Shimoda
- Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Nobuyuki Shimono
- Center for the Study of Global Infection, Kyushu University Hospital, Fukuoka, Japan
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114
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Yagel Y, Nativ H, Riesenberg K, Nesher L, Saidel-Odes L, Smolyakov R. Outcomes of UTI and bacteriuria caused by ESBL vs. non-ESBL Enterobacteriaceae isolates in pregnancy: a matched case-control study. Epidemiol Infect 2018; 146:771-774. [PMID: 29534774 PMCID: PMC9134351 DOI: 10.1017/s0950268818000365] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 12/23/2017] [Accepted: 02/04/2018] [Indexed: 11/06/2022] Open
Abstract
Infections caused by extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) have become increasingly prevalent, posing a serious public threat worldwide. It is commonly believed that untreated urinary tract infections (UTI) and asymptomatic bacteriuria (ABU) during pregnancy are associated with poor obstetric outcomes. Currently, there is a paucity of data regarding the outcomes or risk factors of such ESBL-E infections in pregnant women. We conducted a retrospective 1:2 matched case-control study of hospitalised pregnant women with ESBL-E- vs. non-ESBL-producing Enterobacteriaceae-positive urine cultures obtained between 2004 and 2015, and compared risk factors for the development of resistant bacteria, clinical course and outcomes. In total, 87 pregnant women with ESBL-E-positive urine cultures were matched to 174 controls by decade of age, ethnicity and pregnancy trimester. Significant risk factors for acquisition of ESBL-E included prior UTI/ABU episodes (50.6% vs. 26.3%, P < 0.001), previous isolation of ESBL-E in urine cultures (12.6% vs. 0.6%, P < 0.001) and prior antibiotic exposure (71.3% vs. 54%, P = 0.002). Previous hospitalisation, however, was not found to be a risk factor. No significant difference was found in adverse obstetric outcomes. We conclude that prior urinary infections and antibiotic exposure were significant risk factors for the isolation of ESBL-E pathogens from the urine of pregnant women; however, this was not associated with worse obstetric outcomes compared with non-ESBL-E pathogens.
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Affiliation(s)
- Y. Yagel
- Infectious Diseases Institute, Soroka University Medical Center and Joyce and Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - H. Nativ
- Infectious Diseases Institute, Soroka University Medical Center and Joyce and Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - K. Riesenberg
- Infectious Diseases Institute, Soroka University Medical Center and Joyce and Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - L. Nesher
- Infectious Diseases Institute, Soroka University Medical Center and Joyce and Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - L. Saidel-Odes
- Infectious Diseases Institute, Soroka University Medical Center and Joyce and Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - R. Smolyakov
- Infectious Diseases Institute, Soroka University Medical Center and Joyce and Irving Goldman Medical School, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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115
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A Novel Inhibitor of the LolCDE ABC Transporter Essential for Lipoprotein Trafficking in Gram-Negative Bacteria. Antimicrob Agents Chemother 2018; 62:AAC.02151-17. [PMID: 29339384 DOI: 10.1128/aac.02151-17] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/06/2018] [Indexed: 12/14/2022] Open
Abstract
The outer membrane is an essential structural component of Gram-negative bacteria that is composed of lipoproteins, lipopolysaccharides, phospholipids, and integral β-barrel membrane proteins. A dedicated machinery, called the Lol system, ensures proper trafficking of lipoproteins from the inner to the outer membrane. The LolCDE ABC transporter is the inner membrane component, which is essential for bacterial viability. Here, we report a novel pyrrolopyrimidinedione compound, G0507, which was identified in a phenotypic screen for inhibitors of Escherichia coli growth followed by selection of compounds that induced the extracytoplasmic σE stress response. Mutations in lolC, lolD, and lolE conferred resistance to G0507, suggesting LolCDE as its molecular target. Treatment of E. coli cells with G0507 resulted in accumulation of fully processed Lpp, an outer membrane lipoprotein, in the inner membrane. Using purified protein complexes, we found that G0507 binds to LolCDE and stimulates its ATPase activity. G0507 still binds to LolCDE harboring a Q258K substitution in LolC (LolCQ258K), which confers high-level resistance to G0507 in vivo but no longer stimulates ATPase activity. Our work demonstrates that G0507 has significant promise as a chemical probe to dissect lipoprotein trafficking in Gram-negative bacteria.
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116
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A Multicenter, Randomized, Double-Blind, Phase 2 Study of the Efficacy and Safety of Plazomicin Compared with Levofloxacin in the Treatment of Complicated Urinary Tract Infection and Acute Pyelonephritis. Antimicrob Agents Chemother 2018; 62:AAC.01989-17. [PMID: 29378708 PMCID: PMC5913993 DOI: 10.1128/aac.01989-17] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 01/22/2018] [Indexed: 01/15/2023] Open
Abstract
Increasing antimicrobial resistance among uropathogens limits treatment options for patients with complicated urinary tract infection (cUTI). Plazomicin, a new aminoglycoside, has in vitro activity against multidrug-resistant Enterobacteriaceae, including isolates resistant to currently available aminoglycosides, as well as extended-spectrum β-lactamase-producing and carbapenem-resistant Enterobacteriaceae. We evaluated the efficacy and safety of plazomicin in a double-blind, comparator-controlled, phase 2 study in adults with cUTI or acute pyelonephritis. Patients were randomized 1:1:1 to receive intravenous plazomicin (10 or 15 mg/kg of body weight) or intravenous levofloxacin (750 mg) once daily for 5 days. Coprimary efficacy endpoints were microbiological eradication at the test of cure (TOC; 5 to 12 days after the last dose) in the modified intent-to-treat (MITT) and microbiologically evaluable (ME) populations. Overall, 145 patients were randomized to treatment. In the groups receiving plazomicin at 10 mg/kg, plazomicin at 15 mg/kg, and levofloxacin, microbiological eradication rates were, respectively, 50.0% (6 patients with microbiological eradication at TOC/12 patients treated [95% confidence interval {CI}, 21.1 to 78.9%]), 60.8% (31/51 [95% CI, 46.1 to 74.2%]), and 58.6% (17/29 [95% CI, 38.9 to 76.5%]) in the MITT population and 85.7% (6/7 [95% CI, 42.1 to 99.6%]), 88.6% (31/35 [95% CI, 73.3 to 96.8%]), and 81.0% (17/21 [95% CI, 58.1 to 94.6%]) in the ME population. In the MITT population, 66.7% (95% CI, 34.9 to 90.1%), 70.6% (95% CI, 56.2 to 82.5%), and 65.5% (95% CI, 45.7 to 82.1%) of the patients in the three groups, respectively, were assessed by the investigator to be clinically cured at TOC. Adverse events were reported in 31.8%, 35.1%, and 47.7% of the patients in the three groups, respectively. Serum creatinine values were generally stable over the course of the study. No plazomicin-treated patients with evaluable audiometry data had postbaseline sensorineural, conductive, or mixed hearing loss. In summary, plazomicin demonstrated microbiological and clinical success and an overall safety profile supportive of further clinical development. (This study has been registered at ClinicalTrials.gov under identifier NCT01096849.)
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117
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Evaluation of CpxRA as a Therapeutic Target for Uropathogenic Escherichia coli Infections. Infect Immun 2018; 86:IAI.00798-17. [PMID: 29311237 DOI: 10.1128/iai.00798-17] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/31/2017] [Indexed: 12/18/2022] Open
Abstract
CpxRA is an envelope stress response system found in all members of the family Enterobacteriaceae; CpxA has kinase activity for CpxR and phosphatase activity for phospho-CpxR, a transcription factor. CpxR also accepts phosphate groups from acetyl phosphate, a glucose metabolite. Activation of CpxR increases the transcription of genes encoding membrane repair and downregulates virulence determinants. We hypothesized that activation of CpxR could serve as an antimicrobial/antivirulence strategy and discovered compounds that activate CpxR in Escherichia coli by inhibiting CpxA phosphatase activity. As a prelude to testing such compounds in vivo, here we constructed cpxA (in the presence of glucose, CpxR is activated because of a lack of CpxA phosphatase) and cpxR (system absent) deletion mutants of uropathogenic E. coli (UPEC) CFT073. By RNA sequencing, few transcriptional differences were noted between the cpxR mutant and its parent, but in the cpxA mutant, several UPEC virulence determinants were downregulated, including the fim and pap operons, and it exhibited reduced mannose-sensitive hemagglutination of guinea pig red blood cells in vitro In competition experiments with mice, both mutants were less fit than the parent in the urine, bladder, and kidney; these fitness defects were complemented in trans Unexpectedly, in single-strain challenges, only the cpxA mutant was attenuated for virulence in the kidney but not in the bladder or urine. For the cpxA mutant, this may be due to the preferential use of amino acids over glucose as a carbon source in the bladder and urine by UPEC. These studies suggest that CpxA phosphatase inhibitors may have some utility for treating complex urinary tract infections.
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118
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Talan DA, Takhar SS, Krishnadasan A, Abrahamian FM, Mower WR, Moran GJ. Fluoroquinolone-Resistant and Extended-Spectrum β-Lactamase-Producing Escherichia coli Infections in Patients with Pyelonephritis, United States(1). Emerg Infect Dis 2018; 22. [PMID: 27532362 PMCID: PMC4994338 DOI: 10.3201/eid2209.160148] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
For 2013-2014, we prospectively identified US adults with flank pain, temperature >38.0°C, and a diagnosis of acute pyelonephritis, confirmed by culture. Cultures from 453 (86.9%) of 521 patients grew Escherichia coli. Among E. coli isolates from 272 patients with uncomplicated pyelonephritis and 181 with complicated pyelonephritis, prevalence of fluoroquinolone resistance across study sites was 6.3% (range by site 0.0%-23.1%) and 19.9% (0.0%-50.0%), respectively; prevalence of extended-spectrum β-lactamase (ESBL) production was 2.6% (0.0%-8.3%) and 12.2% (0.0%-17.2%), respectively. Ten (34.5%) of 29 patients with ESBL infection reported no exposure to antimicrobial drugs, healthcare, or travel. Of the 29 patients with ESBL infection and 53 with fluoroquinolone-resistant infection, 22 (75.9%) and 24 (45.3%), respectively, were initially treated with in vitro inactive antimicrobial drugs. Prevalence of fluoroquinolone resistance exceeds treatment guideline thresholds for alternative antimicrobial drug strategies, and community-acquired ESBL-producing E. coli infection has emerged in some US communities.
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119
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Chastain DB, White BP, Cretella DA, Bland CM. Is It Time to Rethink the Notion of Carbapenem-Sparing Therapy Against Extended-Spectrum β-Lactamase-Producing Enterobacteriaceae Bloodstream Infections? A Critical Review. Ann Pharmacother 2017; 52:484-492. [PMID: 29239220 DOI: 10.1177/1060028017748943] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To present systematic recommendations for carbapenem-sparing therapy against extended-spectrum β-lactamases (ESBLs) Enterobacteriaceae bloodstream infections (BSIs) derived from a critical review of clinical data. DATA SOURCES A systematic literature search using PubMed and MEDLINE databases (January 1, 2012, to June 30, 2017) was performed using key MESH terms: ESBL or extended-spectrum β-lactamases and bacteremia or bloodstream infection with piperacillin/tazobactam, ciprofloxacin, levofloxacin, cefepime, cephamycins, carbapenem, doripenem, meropenem, and ertapenem. References within articles of interest were also evaluated. STUDY SELECTION AND DATA EXTRACTION All English language trials were considered, and results were limited to clinical efficacy trials. Articles were screened by title and abstract for inclusion. DATA SYNTHESIS Studies comparing noncarbapenem versus carbapenem therapy for ESBL BSIs were critically analyzed to identify heterogeneity among studies. Data abstracted included empirical or definitive therapy, patient population, dosing, source of infection and severity, infectious etiology, and outcome. CONCLUSIONS Completely sparing carbapenem therapy cannot be justified among patients with ESBL BSIs. Determining the source of infection is critical to identify patients for whom carbapenem-sparing therapy is appropriate.
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Affiliation(s)
| | - Bryan P White
- 2 Oklahoma University Medical Center, Oklahoma City, OK, USA
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120
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A Cohort Study of Risk Factors That Influence Empirical Treatment of Patients with Acute Pyelonephritis. Antimicrob Agents Chemother 2017; 61:AAC.01317-17. [PMID: 28971876 DOI: 10.1128/aac.01317-17] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 09/23/2017] [Indexed: 12/26/2022] Open
Abstract
The aim of the current study was to compare community-acquired acute pyelonephritis (CA-APN) with health care-associated acute pyelonephritis (HCA-APN), describe the outcomes, and identify variables that could predict antimicrobial susceptibility. We conducted an observational study that included all consecutive episodes of acute pyelonephritis (APN) in adults during 2014 at a Spanish university hospital. From each episode, demographic data, comorbidities, clinical presentation, microbiological data, antimicrobial therapy, and outcome were recorded. A multivariable logistic regression model was performed to define the variables associated with antimicrobial resistance. A total of 607 patients, 503 (82.9%) with CA-APN and 104 (17.1%) with HCA-APN, were included in the study. Patients with HCA-APN were older than patients with CA-APN (70.4 versus 50.6 years; P < 0.001) and had higher rates of previous urinary tract infections (UTIs) (56.5% versus 24.5%; P < 0.001) and previous antibiotic use (56.8% versus 22.8%; P < 0.001). Escherichia coli was more frequently isolated from patients with CA-APN than from patients with HCA-APN (79.9% versus 50.5%; P < 0.001). The rates of resistance of Escherichia coli strains from CA-APN patients versus HCA-APN patients were as follows: amoxicillin-clavulanic acid, 22.4% versus 53.2% (P = 0.001); cefuroxime, 7.7% versus 43.5% (P = 0.001); cefotaxime, 4.3% versus 32.6% (P < 0.001); ciprofloxacin, 22.8% versus 74.5% (P < 0.001); and co-trimoxazole, 34.5% versus 58.7% (P = 0.003). The site of acquisition, recurrent UTIs, and previous antibiotic use were independent risk factors for antimicrobial resistance. Relapse rates were significantly higher when definitive antimicrobial treatment was not adequate (37.1% versus 9.3% when definitive antimicrobial treatment was adequate; P < 0.001). Our study reflects the rise of resistance to commonly used antibiotics in acute pyelonephritis. In order to choose the adequate empirical antibiotic therapy, risk factors for resistance should be considered.
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121
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Kim H, Kim YA, Park YS, Choi MH, Lee GI, Lee K. Risk Factors and Molecular Features of Sequence Type (ST) 131 Extended-spectrum β-Lactamase-producing Escherichia coli in Community-onset Bacteremia. Sci Rep 2017; 7:14640. [PMID: 29116143 PMCID: PMC5677100 DOI: 10.1038/s41598-017-14621-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 10/02/2017] [Indexed: 01/01/2023] Open
Abstract
Due to the spread of a single CTX-M-type extended-spectrum β-lactamase (ESBL) clone of sequence type (ST) 131, community-onset bacteremia caused by ESBL-producing Escherichia coli has increased dramatically. We evaluated the risk factors and molecular features of ESBL-producing E. coli ST131 clones isolated from Korean patients with community-onset bacteremia. We collected a total of 124 ESBL-producing E. coli isolates from blood in patients with community-onset bacteremia over a 2 year-period. Among 124 patients, the number of community-associated bacteremia cases was 57 (46%). ST131 strains accounted for 49.1% (28/57) of community-associated bacteremia cases and 44.8% (30/67) of healthcare-associated community-onset bacteremia cases. Among 58 ST131 strains, nine isolates were shown to harbor O16-H41, and 61.1% (30/49) of O25 had H30Rx. In a multivariate analysis, independent risk factors for acquisition of ST131 isolates over non-ST131 isolates were underlying diabetes mellitus and absence of prior chemotherapy history. The most common ESBL genotype was CTX-M-15 (46.0%), followed by CTX-M-14 (37.1%). A considerable proportion of community-onset ESBL-producing E. coli bacteremia was observed. ST131 clones appear to be associated with the spread of community-associated bacteremia exhibiting high antimicrobial resistance and highly virulent H30Rx traits, which could become a major public health concern in Korea.
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Affiliation(s)
- Hyunsoo Kim
- Department of Laboratory Medicine, National Police Hospital, Seoul, 05715, Republic of Korea
| | - Young Ah Kim
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 10444, Republic of Korea.
| | - Yoon Soo Park
- Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 10444, Republic of Korea
| | - Min Hyuk Choi
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Gyeong In Lee
- Department of Laboratory Medicine, National Police Hospital, Seoul, 05715, Republic of Korea
| | - Kyungwon Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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122
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Patolia S, Abate G, Patel N, Patolia S, Frey S. Risk factors and outcomes for multidrug-resistant Gram-negative bacilli bacteremia. Ther Adv Infect Dis 2017; 5:11-18. [PMID: 29344356 DOI: 10.1177/2049936117727497] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background The incidence of multidrug-resistant (MDR) organisms is increasing along with mortality. Identifying risk factors for the development of MDR Gram-negative bacilli (GNB) bacteremia could greatly impact patient care and management. Methods Data from the electronic health record of patients with GNB over 13-month period were collected at a single university medical center. Baseline demographic data, risk factor, microbiological data, recurrence of bacteremia, and mortality were recorded. Results A total of 177 patients were included in the analysis. MDR GNB occurred in 46 patients (26%). The mortality rate in the MDR group was 34.8% compared to 13.7% in non-MDR group (p = 0.002). In multivariate analysis, diabetes mellitus [DM; odds ratio (OR): 2.8, 95% confidence interval (CI): 1-4.88], previous antibiotic use (OR: 2.93, 95% CI: 1.25-6.87), and urinary catheter as a source of infection (OR 5.96, 95% CI: 1.78-19.94) were significant risk factors for the development of MDR GNB. In addition, end-stage liver disease (OR: 3.64, 95% CI: 1.07-12.3), solid organ malignancy (OR: 3.64, 95% CI: 1.25-10.56), intra-abdominal source of infection (OR: 3.66, 95% CI: 1.14-11.73), inappropriate empiric antibiotics (OR 7.59, 95% CI: 1.68-34.34) and urinary catheter as a source of infection (OR 5.68, 95% CI: 1.37-23.5) were significant factors for mortality in patients with MDR GNB. Conclusion Our study provides important information about the risk factors for the development of MDR GNB bacteremia and helps prognosticate patient with MDR GNB.
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Affiliation(s)
- Swati Patolia
- Department of Infectious Disease, St. Anthony's Medical Center, 12700 Southfork Road, Suite 200, St Louis, MO 63128, USA
| | - Getahun Abate
- Department of Infectious Disease, School of Medicine, Saint Louis University, St. Louis, MO, USA
| | - Nirav Patel
- Department of Infectious Disease, School of Medicine, Saint Louis University, St. Louis, MO, USA
| | - Setu Patolia
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, Saint Louis University, St. Louis, MO, USA
| | - Sharon Frey
- Department of Infectious Disease, School of Medicine, Saint Louis University, St. Louis, MO, USA
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123
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Adler A, Katz DE, Marchaim D. The Continuing Plague of Extended-spectrum β-lactamase-producing Enterobacteriaceae Infections. Infect Dis Clin North Am 2017; 30:347-375. [PMID: 27208763 DOI: 10.1016/j.idc.2016.02.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Antimicrobial resistance is a common iatrogenic complication of modern life and medical care. One of the most demonstrative examples is the exponential increase in the incidence of extended-spectrum β-lactamases (ESBLs) production among Enterobacteriaceae, which is the most common human pathogens outside of the hospital settings. Infections resulting from ESBL-producing bacteria are associated with devastating outcomes, now affecting even previously healthy individuals. This development poses an enormous burden and threat to public health. This paper aims to narrate the evolving epidemiology of ESBL infections, and highlight current challenges in terms of management and prevention of these common infections.
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Affiliation(s)
- Amos Adler
- Clinical Microbiology Laboratory, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - David E Katz
- Department of Internal Medicine D, Shaare Zedek Medical Center, Hebrew University School of Medicine, Jerusalem, Israel
| | - Dror Marchaim
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Division of Infectious Diseases, Assaf Harofeh Medical Center, Zerifin 70300, Israel.
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124
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van Duin D, Paterson DL. Multidrug-Resistant Bacteria in the Community: Trends and Lessons Learned. Infect Dis Clin North Am 2017; 30:377-390. [PMID: 27208764 DOI: 10.1016/j.idc.2016.02.004] [Citation(s) in RCA: 305] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Multidrug resistant (MDR) bacteria are one of the most important threats to public health. Typically, MDR bacteria are associated with nosocomial infections. However, some MDR bacteria have become prevalent causes of community-acquired infections. The spread of MDR bacteria into the community is a crucial development, and is associated with increased morbidity, mortality, health care costs, and antibiotic use. Factors associated with community dissemination of MDR bacteria overlap but are distinct from those associated with nosocomial spread. Prevention of further community spread of MDR bacteria is of the utmost importance, and requires a multidisciplinary approach involving all stakeholders.
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Affiliation(s)
- David van Duin
- Division of Infectious Diseases, University of North Carolina, CB 7030, 130 Mason Farm Road, Chapel Hill, NC 27599, USA.
| | - David L Paterson
- The University of Queensland, Building 71/918 RBWH, Herston, QLD 4029, Australia
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Genomic Analysis of Multidrug-Resistant Escherichia coli from North Carolina Community Hospitals: Ongoing Circulation of CTX-M-Producing ST131- H30Rx and ST131- H30R1 Strains. Antimicrob Agents Chemother 2017; 61:AAC.00912-17. [PMID: 28584139 DOI: 10.1128/aac.00912-17] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 06/01/2017] [Indexed: 12/27/2022] Open
Abstract
Escherichia coli sequence type 131 (ST131) predominates globally among multidrug-resistant (MDR) E. coli strains. We used whole-genome sequencing (WGS) to investigate 63 MDR E. coli isolates from 7 North Carolina community hospitals (2010 to 2015). Of these, 39 (62%) represented ST131, including 37 (95%) from the ST131-H30R subclone: 10 (27%) from its H30R1 subset and 27 (69%) from its H30Rx subset. ST131 core genomes differed by a median of 15 (range, 0 to 490) single-nucleotide variants (SNVs) overall versus only 7 within H30R1 (range, 3 to 12 SNVs) and 11 within H30Rx (range, 0 to 21). The four isolates with identical core genomes were all H30Rx. Epidemiological and clinical characteristics did not vary significantly by strain type, but many patients with MDR E. coli or H30Rx infection were critically ill and had poor outcomes. H30Rx isolates characteristically exhibited fluoroquinolone resistance and CTX-M-15 production, had a high prevalence of trimethoprim-sulfamethoxazole resistance (89%), sul1 (89%), and dfrA17 (85%), and were enriched for specific virulence traits, and all qualified as extraintestinal pathogenic E. coli The high overall prevalence of CTX-M-15 appeared to be possibly attributable to its association with the ST131-H30Rx subclone and IncF[F2:A1:B-] plasmids. Some phylogenetically clustered non-ST131 MDR E. coli isolates also had distinctive serotypes/fimH types, fluoroquinolone mutations, CTX-M variants, and IncF types. Thus, WGS analysis of our community hospital source MDR E. coli isolates suggested ongoing circulation and differentiation of E. coli ST131 subclones, with clonal segregation of CTX-M variants, other resistance genes, Inc-type plasmids, and virulence genes.
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Zorgani A, Almagatef A, Sufya N, Bashein A, Tubbal A. Detection of CTX-M-15 Among Uropathogenic Escherichia coli Isolated from Five Major Hospitals in Tripoli, Libya. Oman Med J 2017; 32:322-327. [PMID: 28804585 PMCID: PMC5534234 DOI: 10.5001/omj.2017.61] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES Multidrug resistance (MDR) and emergence of extended-spectrum β-lactamases (ESBLs) among uropathogenic Escherichia coli have been reported worldwide, but there was no information on the detection of blaCTX-M-15 in major teaching hospitals in Libya. The aim of the study was to investigate the occurrence of CTX-M-15 β-lactamases producers isolated from five teaching hospitals in Tripoli, Libya. METHODS A total of 346 urine samples were collected from hospitalized patients in five teaching hospitals with a diagnosis of urinary tract infection (UTI). Phenotypic confirmation of ESBLs was confirmed by E-test strip; all ESBL-producing E. coli isolates were screened for the blaCTX-M-15 gene. RESULTS The distribution of ESBL-producing E. coli varied among the five hospitals. The highest proportion was identified in Tripoli Medical Centre (67.6%). There were extremely high proportions of isolates resistant to ceftriaxone, cefepime, and ceftazidime (93.0-100.0%) among ESBL producers compared to non-ESBL producers (2.2-4.7%). MDR was detected in 22.2% of isolates. The majority of isolates (85.9%) in which blaCTX-M-15 was identified were ESBL producers. There was a correlation (p < 0.001) between expression of CTX-M-15 and resistance to ceftazidime. CONCLUSIONS The isolation of MDR ESBL-producing uropathogens expressing the CTX-M-15 gene will limit the choices clinicians have to treat their patients with UTIs. Continued surveillance and implementation of efficient infection control measures are required.
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Affiliation(s)
- Abdulaziz Zorgani
- Medical Microbiology, Faculty of Medicine, University of Tripoli, Tripoli, Libya,Address correspondence and reprints request to: Abdulaziz Zorgani, Medical Microbiology, Faculty of Medicine, University of Tripoli, Tripoli, Libya. E-mail:
| | - Asma Almagatef
- Microbiology Department, Faculty of Pharmacy, University of Tripoli, Tripoli, Libya
| | - Najib Sufya
- Microbiology Department, Faculty of Pharmacy, University of Tripoli, Tripoli, Libya
| | - Abdulla Bashein
- Biochemistry Department, Faculty of Medicine, University of Tripoli, Tripoli, Libya
| | - Abdullatif Tubbal
- Department of Statistics, Faculty of Science, University of Tripoli, Tripoli, Libya
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Silva T, Grenho L, Barros J, Silva JC, Pinto RV, Matos A, Colaço B, Fernandes MH, Bettencourt A, Gomes PS. A minocycline-releasing PMMA system as a space maintainer for staged bone reconstructions-in vitro antibacterial, cytocompatibility and anti-inflammatory characterization. ACTA ACUST UNITED AC 2017; 12:035009. [PMID: 28333042 DOI: 10.1088/1748-605x/aa68b8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the present work, we study the development and biological characterization of a polymethyl methacrylate (PMMA)-based minocycline delivery system, to be used as a space maintainer within craniofacial staged regenerative interventions. The developed delivery systems were characterized regarding solid state characteristics and assayed in vitro for antibacterial and anti-inflammatory activity, and cytocompatibility with human bone cells. A drug release profile allowed for an initial burst release and a more sustained and controlled release over time, with minimum inhibitory concentrations for the assayed and relevant pathogenic bacteria (i.e., Staphylococcus aureus, slime-producer Staphylococcus epidermidis and Escherichia coli) being easily attained in the early time points, and sustained up to 72 h. Furthermore, an improved osteoblastic cell response-with enhancement of cell adhesion and cell proliferation-and increased anti-inflammatory activity were verified in developed systems, compared to a control (non minocycline-loaded PMMA cement). The obtained results converge to support the possible efficacy of the developed PMMA-based minocycline delivery systems for the clinical management of complex craniofacial trauma. Here, biomaterials with space maintenance properties are necessary for the management of staged reconstructive approaches, thus minimizing the risk of peri-operative infections and enhancing the local tissue healing and early stages of regeneration.
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Affiliation(s)
- Tiago Silva
- Laboratory for Bone Metabolism and Regeneration-Faculty of Dental Medicine, U. Porto-Porto, Portugal
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A call to action for outpatient antibiotic stewardship. J Am Pharm Assoc (2003) 2017; 57:457-463. [PMID: 28499717 DOI: 10.1016/j.japh.2017.03.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 03/07/2017] [Accepted: 03/31/2017] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To address the public health threat of antibiotic resistance, there has been an enhanced call for antibiotic stewardship programs throughout the health care continuum. SUMMARY While antibiotic stewardship programs have been well described in the inpatient setting, data on effectiveness and guidance on implementing outpatient programs is scarce. Establishing stewardship practices in the outpatient setting is necessary because more than 60% of human antibiotic use occurs in this setting. CONCLUSION In this article, we highlight the importance and need for stewardship in the outpatient setting, discuss strategies for the development of stewardship teams, and discuss potential metrics that can be used to assess effectiveness of antibiotic stewardship interventions.
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Zilberberg MD, Nathanson BH, Sulham K, Fan W, Shorr AF. Carbapenem resistance, inappropriate empiric treatment and outcomes among patients hospitalized with Enterobacteriaceae urinary tract infection, pneumonia and sepsis. BMC Infect Dis 2017; 17:279. [PMID: 28415969 PMCID: PMC5393012 DOI: 10.1186/s12879-017-2383-z] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 04/05/2017] [Indexed: 02/07/2023] Open
Abstract
Background Drug resistance among gram-negative pathogens is a risk factor for inappropriate empiric treatment (IET), which in turn increases the risk for mortality. We explored the impact of carbapenem-resistant Enterobacteriaceae (CRE) on the risk of IET and of IET on outcomes in patients with Enterobacteriaceae infections. Methods We conducted a retrospective cohort study in Premier Perspective database (2009–2013) of 175 US hospitals. We included all adult patients with community-onset culture-positive urinary tract infection (UTI), pneumonia, or sepsis as a principal diagnosis, or as a secondary diagnosis in the setting of respiratory failure, treated with antibiotics within 2 days of admission. We employed regression modeling to compute adjusted association of presence of CRE with risk of receiving IET, and of IET on hospital mortality, length of stay (LOS) and costs. Results Among 40,137 patients presenting to the hospital with an Enterobacteriaceae UTI, pneumonia or sepsis, 1227 (3.1%) were CRE. In both groups, the majority of the cases were UTI (51.4% CRE and 54.3% non-CRE). Those with CRE were younger (66.6+/−15.3 vs. 69.1+/−15.9 years, p < 0.001), and more likely to be African-American (19.7% vs. 14.0%, p < 0.001) than those with non-CRE. Both chronic (Charlson score 2.0+/−2.0 vs. 1.9+/−2.1, p = 0.009) and acute (by day 2: ICU 56.3% vs. 30.4%, p < 0.001, and mechanical ventilation 35.8% vs. 11.7%, p < 0.001) illness burdens were higher among CRE than non-CRE subjects, respectively. CRE patients were 3× more likely to receive IET than non-CRE (46.5% vs. 11.8%, p < 0.001). In a regression model CRE was a strong predictor of receiving IET (adjusted relative risk ratio 3.95, 95% confidence interval 3.5 to 4.5, p < 0.001). In turn, IET was associated with an adjusted rise in mortality of 12% (95% confidence interval 3% to 23%), and an excess of 5.2 days (95% confidence interval 4.8, 5.6, p < 0.001) LOS and $10,312 (95% confidence interval $9497, $11,126, p < 0.001) in costs. Conclusions In this large US database, the prevalence of CRE among patients with Enterobacteriaceae UTI, pneumonia or sepsis was comparable to other national estimates. Infection with CRE was associated with a four-fold increased risk of receiving IET, which in turn increased mortality, LOS and costs.
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Affiliation(s)
| | | | - Kate Sulham
- The Medicines Company, 8 Sylvan Way, Parsippany, NJ, 07054, USA
| | - Weihong Fan
- The Medicines Company, 8 Sylvan Way, Parsippany, NJ, 07054, USA
| | - Andrew F Shorr
- Washington Hospital Center, 110 Irving St. NW, Washington, DC, 20010, USA
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Doi Y, Iovleva A, Bonomo RA. The ecology of extended-spectrum β-lactamases (ESBLs) in the developed world. J Travel Med 2017; 24:S44-S51. [PMID: 28521000 PMCID: PMC5731446 DOI: 10.1093/jtm/taw102] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/28/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND Since the initial appearance in the 1980s, Enterobacteriaceae producing extended-spectrum β-lactamase (ESBL) have increased in prevalence and emerged as a major antimicrobial-resistant pathogen. The source of these antimicrobial-resistant bacteria in the developed world is an area of active investigation. METHODS A standard internet search was conducted with a focus on the epidemiology and potential sources of ESBL-producing Enterobacteriaceae in the developed world. RESULTS The last decade has witnessed several major changes in the epidemiology of these bacteria: replacement of TEM and SHV-type ESBLs by CTX-M-family ESBLs, emergence of Escherichia coli ST131 as a prevalent vehicle of ESBL, and spread of ESBL-producing E. coli in the community. The most studied potential sources of ESBL-producing Enterobacteriaceae in humans in the community include food and companion animals, the environment and person-to-person transmission, though definitive links are yet to be established. Evidence is emerging that international travel may serve as a major source of introduction of ESBL-producing Enterobacteriaceae into the developed world. CONCLUSIONS ESBL-producing Enterobacteriaceae has become a major multidrug-resistant pathogen in the last two decades, especially in the community settings. The multifactorial nature of its expansion poses a major challenge in the efforts to control them.
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Affiliation(s)
- Yohei Doi
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Alina Iovleva
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Robert A Bonomo
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States.,Department of Molecular Biology and Microbiology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States.,Research Service, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, Ohio, United States of America.,Division of Infectious Diseases and HIV Medicine, Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States.,Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
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Xia L, Liu Y, Xia S, Kudinha T, Xiao SN, Zhong NS, Ren GS, Zhuo C. Prevalence of ST1193 clone and IncI1/ST16 plasmid in E-coli isolates carrying bla CTX-M-55 gene from urinary tract infections patients in China. Sci Rep 2017; 7:44866. [PMID: 28338012 PMCID: PMC5364490 DOI: 10.1038/srep44866] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 02/15/2017] [Indexed: 12/29/2022] Open
Abstract
To study molecular epidemiology of CTX-M-55-carrying Escherichia coli isolates from urinary tract infections (UTIs) in China. 111 blaCTX-M-55-positive E.coli isolates from UTIs patients in China were studied. Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) were used to analyze the homologies among the strains. Conjugation experiments, S1nuclease PFGE and PCR analysis were performed to characterize plasmids harboring blaCTX-M-55 and their genetic environment. 111 isolates were clustered into 86 individual pulsotypes and three clusters by PFGE. Fifty-five (49.5%) of the isolates belonged to 8 STs. Most of the ST1193 isolates belonged to one PFGE cluster. Transconjugants (n = 45) derived from randomly selected blaCTX-M-55 donors (n = 58), were found to contain a single 90-kb conjugative plasmid, which mainly belonged to the IncI1 groups (34, 76%). Among the IncI1 plasmids, the blaCTX-M-55/IncI1/ST16 predominated (23/34, 68%). The blaTEM-1 and aac (3′)-II genes were frequently detected on the IncI1 plasmids, and the insertion of ISEcp1 or IS26 was observed at the 48 bp or 45 bp upstream of the start codon of blaCTX-M-55 gene. The dissemination of blaCTX-M-55 gene among E. coli UTI isolates, appeared to be due to both the major clonal lineage of ST1193 and the horizontal transfer of epidemic plasmid IncI1/ST16.
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Affiliation(s)
- Liang Xia
- State Key Laboratory of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China.,The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yang Liu
- State Key Laboratory of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
| | - Shu Xia
- State Key Laboratory of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
| | - Timothy Kudinha
- Charles Sturt University, Leeds Parade, Orange, New South Wales, Australia
| | - Shu-Nian Xiao
- State Key Laboratory of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
| | - Nan-Shan Zhong
- State Key Laboratory of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
| | - Guo-Sheng Ren
- The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Chao Zhuo
- State Key Laboratory of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
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Risk factors for community-associated multidrug-resistant Pseudomonas aeruginosa in veterans with spinal cord injury and disorder: a retrospective cohort study. Spinal Cord 2017; 55:687-691. [PMID: 28169292 PMCID: PMC5501739 DOI: 10.1038/sc.2017.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 12/01/2016] [Accepted: 12/30/2016] [Indexed: 02/06/2023]
Abstract
Study Design Retrospective cohort study Objectives To identify independent risk factors associated with community-associated multidrug resistant P. aeruginosa (MDRPA) in a population of Veterans with spinal cord injury and disorders (SCI/D). Setting 127 Veterans Affairs healthcare facilities Methods Laboratory results from January 1, 2012 to December 31, 2013 were collected and MDRPA cultures were compared to non-MDRPA cultures. Results One thousand four hundred forty one cultures were collected from Veterans with SCI/D, including 227 cultures with MDRPA isolates. Characteristics associated with an increased odds of MDRPA include age 50-64 (aOR= 1.80, 95% CI= 1.13-2.87), MDRPA culture in the past 365 days (aOR= 9.12, 95% CI= 5.88-14.15), and carbapenem exposure in the past 90 days (aOR= 2.56, 95% CI= 1.35-4.87). In contrast, paraplegia was associated with a 53% decreased odds of MDRPA compared to those with tetraplegia (aOR= 0.47, 95% CI= 0.32-0.69). Conclusions Risk factors for community-associated MDRPA include prior history of MDRPA and exposure to carbapenems. Awareness of these factors is important for targeted prevention and treatment of MDRPA in patients with SCI/D.
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Hayakawa K, Nagamatsu M, Mezaki K, Sugiki Y, Kutsuna S, Takeshita N, Yamamoto K, Mawatari M, Fujiya Y, Ohmagari N. Epidemiology of extended-spectrum beta-lactamase (ESBL) producing Escherichia coli in Japan: Characteristics of community-associated versus healthcare-associated ESBL E. coli. J Infect Chemother 2017; 23:117-119. [DOI: 10.1016/j.jiac.2016.08.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/17/2016] [Accepted: 08/22/2016] [Indexed: 10/20/2022]
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Quan J, Li X, Chen Y, Jiang Y, Zhou Z, Zhang H, Sun L, Ruan Z, Feng Y, Akova M, Yu Y. Prevalence of mcr-1 in Escherichia coli and Klebsiella pneumoniae recovered from bloodstream infections in China: a multicentre longitudinal study. THE LANCET. INFECTIOUS DISEASES 2017; 17:400-410. [PMID: 28139430 DOI: 10.1016/s1473-3099(16)30528-x] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 11/10/2016] [Accepted: 11/22/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Polymyxin antibiotics are used as last-resort therapies to treat infections caused by multidrug-resistant Gram-negative bacteria. The plasmid-mediated colistin resistance determinant MCR-1 has been identified in Enterobacteriaceae in China. We did this study to investigate the prevalence of the mcr-1 gene in clinical isolates from patients with bloodstream infections in China. METHODS Clinical isolates of Escherichia coli and Klebsiella pneumoniae were collected from patients with bloodstream infections at 28 hospitals in China, then screened for colistin resistance by broth microdilution and for the presence of the mcr-1 gene by PCR amplification. We subjected mcr-1-positive isolates to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of mcr-1 with Southern blot hybridisation, and we analysed plasmids containing mcr-1 with filter mating, electroporation, and DNA sequencing. FINDINGS 2066 isolates, consisting of 1495 E coli isolates and 571 K pneumoniae isolates were collected. Of the 1495 E coli isolates, 20 (1%) were mcr-1-positive, whereas we detected only one (<1%) mcr-1-positive isolate among the 571 K pneumoniae isolates. All mcr-1-positive E coli and K pneumoniae isolates were resistant to colistin, with minimum inhibitory concentrations values in the range of 4-32 mg/L, except for one E coli isolate that had a minimum inhibitory concentration less than or equal to 0·06 mg/L. All 21 mcr-1-positive isolates were susceptible to tigecycline and 20 isolates (95%) were susceptible to the carbapenem and β-lactamase inhibitor combination piperacillin and tazobactam. One mcr-1-positive E coli isolate also produced NDM-5, which confers resistance to beta-lactam antibiotics. The 21 mcr-1-positive isolates were clonally diverse and carried mcr-1 on two types of plasmids, a 33 kb IncX4 plasmid and a 61 kb Inc12 plasmid. The 30 day mortality of the patients with bloodstream infections caused by mcr-1-positive isolates was zero. INTERPRETATION mcr-1-positive isolates from bloodstream infections were rare, sporadic, and remained susceptible to many antimicrobial agents. E coli, rather than K pneumoniae, was the main host of the mcr-1 gene. Further studies are needed to clarify the clinical impact of this novel resistance gene. FUNDING National Natural Science Foundation of China.
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Affiliation(s)
- Jingjing Quan
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xi Li
- Centre of Laboratory Medicine, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Yan Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yan Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Zhihui Zhou
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Huichuan Zhang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lu Sun
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Zhi Ruan
- Clinical Laboratory Department, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ye Feng
- Institute of Translational Medicine, College of Medicine, Zhejiang University, Hangzhou, China
| | - Murat Akova
- Department of Infectious Diseases, Hacettepe University School of Medicine, Ankara, Turkey
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
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Reuken PA, Torres D, Baier M, Löffler B, Lübbert C, Lippmann N, Stallmach A, Bruns T. Risk Factors for Multi-Drug Resistant Pathogens and Failure of Empiric First-Line Therapy in Acute Cholangitis. PLoS One 2017; 12:e0169900. [PMID: 28076388 PMCID: PMC5226732 DOI: 10.1371/journal.pone.0169900] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 12/23/2016] [Indexed: 12/27/2022] Open
Abstract
Background Acute cholangitis (AC) requires the immediate initiation of antibiotic therapy in addition to treatment for biliary obstruction. Against a background of an increasing prevalence of multi-drug resistant (MDR) bacteria, the risk factors for the failure of empiric therapy must be defined. Methods Using a pathogen-based approach, 1764 isolates from positive bile duct cultures were retrospectively analyzed to characterize the respective pathogen spectra in two German tertiary centers. Using a patient-based approach, the clinical and laboratory data for 83 patients with AC were assessed to identify risk factors for AC with pathogens resistant to the applied empiric therapy. Results Bile cultures were predominantly polymicrobial, and empiric antibiotic therapies did not cover the full biliary pathogen spectrum in 78% of cases. MDR bacteria were isolated from the bile of 24/83 (29%) patients. The univariate risk factors for biliary MDR bacteria were male sex, nosocomial AC, prior antibiotic exposure and prior biliary stenting, of which biliary stenting was the only independent risk factor according to multivariate analysis (OR = 3.8; 95% CI 1.3–11.0, P = 0.013). Although there were no significant differences in survival or hospital stay in AC patients with and without detected biliary MDR pathogens, the former more often had a concomitant bloodstream infection (58% vs. 24%; P = 0.019), including those involving MDR pathogens or fungi (21% vs. 2%; P = 0.007). Conclusion Patients with biliary stents who develop AC should receive empiric therapy covering enterococci and extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae. These patients are at an increased risk for bloodstream infections by MDR pathogens or fungi.
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Affiliation(s)
- Philipp A. Reuken
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
- * E-mail:
| | - Dorian Torres
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Michael Baier
- Division of Infectious Diseases and Tropical Medicine, Department of Gastroenterology and Rheumatology, Leipzig University Hospital, Leipzig, Germany
| | - Bettina Löffler
- Division of Infectious Diseases and Tropical Medicine, Department of Gastroenterology and Rheumatology, Leipzig University Hospital, Leipzig, Germany
| | - Christoph Lübbert
- Institute of Medical Microbiology, Jena University Hospital, Jena, Germany
| | - Norman Lippmann
- Institute for Medical Microbiology and Epidemiology of Infectious Diseases, Leipzig University Hospital, Leipzig, Germany
| | - Andreas Stallmach
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
- The Integrated Research and Treatment Center for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
| | - Tony Bruns
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
- The Integrated Research and Treatment Center for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
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136
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Reuken PA, Torres D, Baier M, Löffler B, Lübbert C, Lippmann N, Stallmach A, Bruns T. Risk Factors for Multi-Drug Resistant Pathogens and Failure of Empiric First-Line Therapy in Acute Cholangitis. PLoS One 2017. [PMID: 28076388 DOI: 10.137/journal.pone.0169900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Acute cholangitis (AC) requires the immediate initiation of antibiotic therapy in addition to treatment for biliary obstruction. Against a background of an increasing prevalence of multi-drug resistant (MDR) bacteria, the risk factors for the failure of empiric therapy must be defined. METHODS Using a pathogen-based approach, 1764 isolates from positive bile duct cultures were retrospectively analyzed to characterize the respective pathogen spectra in two German tertiary centers. Using a patient-based approach, the clinical and laboratory data for 83 patients with AC were assessed to identify risk factors for AC with pathogens resistant to the applied empiric therapy. RESULTS Bile cultures were predominantly polymicrobial, and empiric antibiotic therapies did not cover the full biliary pathogen spectrum in 78% of cases. MDR bacteria were isolated from the bile of 24/83 (29%) patients. The univariate risk factors for biliary MDR bacteria were male sex, nosocomial AC, prior antibiotic exposure and prior biliary stenting, of which biliary stenting was the only independent risk factor according to multivariate analysis (OR = 3.8; 95% CI 1.3-11.0, P = 0.013). Although there were no significant differences in survival or hospital stay in AC patients with and without detected biliary MDR pathogens, the former more often had a concomitant bloodstream infection (58% vs. 24%; P = 0.019), including those involving MDR pathogens or fungi (21% vs. 2%; P = 0.007). CONCLUSION Patients with biliary stents who develop AC should receive empiric therapy covering enterococci and extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae. These patients are at an increased risk for bloodstream infections by MDR pathogens or fungi.
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Affiliation(s)
- Philipp A Reuken
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Dorian Torres
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Michael Baier
- Division of Infectious Diseases and Tropical Medicine, Department of Gastroenterology and Rheumatology, Leipzig University Hospital, Leipzig, Germany
| | - Bettina Löffler
- Division of Infectious Diseases and Tropical Medicine, Department of Gastroenterology and Rheumatology, Leipzig University Hospital, Leipzig, Germany
| | - Christoph Lübbert
- Institute of Medical Microbiology, Jena University Hospital, Jena, Germany
| | - Norman Lippmann
- Institute for Medical Microbiology and Epidemiology of Infectious Diseases, Leipzig University Hospital, Leipzig, Germany
| | - Andreas Stallmach
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany.,The Integrated Research and Treatment Center for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
| | - Tony Bruns
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany.,The Integrated Research and Treatment Center for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
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O'Connor C, Philip RK, Kelleher J, Powell J, O'Gorman A, Slevin B, Woodford N, Turton JF, McGrath E, Finnegan C, Power L, O'Connell NH, Dunne CP. The first occurrence of a CTX-M ESBL-producing Escherichia coli outbreak mediated by mother to neonate transmission in an Irish neonatal intensive care unit. BMC Infect Dis 2017; 17:16. [PMID: 28056822 PMCID: PMC5217319 DOI: 10.1186/s12879-016-2142-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 12/20/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Escherichia coli (E. coli) comprise part of the normal vaginal microflora. Transfer from mother to neonate can occur during delivery resulting, sometimes, in neonatal bacterial disease. Here, we aim to report the first outbreak of CTX-M ESBL-producing E. coli with evidence of mother-to-neonate transmission in an Irish neonatal intensive care unit (NICU) followed by patient-to-patient transmission. METHODS Investigation including molecular typing was conducted. Infection was defined by clinical and laboratory criteria and requirement for antimicrobial therapy with or without positive blood cultures. Colonisation was determined by isolation without relevant symptoms or indicators of infection. RESULTS Index case was an 8-day-old baby born at 34 weeks gestation who developed ESBL-producing E. coli infections at multiple body sites. Screening confirmed their mother as colonised with ESBL-producing E. coli. Five other neonates, in the NICU simultaneously with the index case, also tested positive. Of these, four were colonised while one neonate developed sepsis, requiring antimicrobial therapy. The second infected neonate's mother was also colonised by ESBL-producing E. coli. Isolates from all eight positive patients (6 neonates, 2 mothers) were compared using pulsed-field gel electrophoresis (PFGE). Two distinct ESBL-producing strains were implicated, with evidence of transmission between mothers and neonates for both strains. All isolates were confirmed as CTX-M ESBL-producers. There were no deaths associated with the outbreak. CONCLUSIONS Resources were directed towards control interventions focused on hand hygiene and antimicrobial stewardship, which ultimately proved successful. Since this incident, all neonates admitted to the NICU have been screened for ESBL-producers and expectant mothers are screened at their first antenatal appointment. To date, there have been no further outbreaks.
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Affiliation(s)
- Ciara O'Connor
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland.,Centre for Interventions in Infection, Inflammation and Immunity (4i), Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Roy K Philip
- Department of Paediatrics, University Maternity Hospital Limerick, Limerick, Ireland
| | - John Kelleher
- Department of Paediatrics, University Maternity Hospital Limerick, Limerick, Ireland
| | - James Powell
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
| | - Alan O'Gorman
- Infection Prevention and Control Team, University Hospital Limerick, Limerick, Ireland
| | - Barbara Slevin
- Infection Prevention and Control Team, University Hospital Limerick, Limerick, Ireland
| | - Neil Woodford
- Antimicrobial Resistance and Healthcare Associated Infections (AMRHAI) Reference Unit, Public Health England, London, UK
| | - Jane F Turton
- Antimicrobial Resistance and Healthcare Associated Infections (AMRHAI) Reference Unit, Public Health England, London, UK
| | - Elaine McGrath
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, National University of Ireland, Galway, Ireland
| | - Cathriona Finnegan
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
| | - Lorraine Power
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
| | - Nuala H O'Connell
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland.,Centre for Interventions in Infection, Inflammation and Immunity (4i), Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Colum P Dunne
- Centre for Interventions in Infection, Inflammation and Immunity (4i), Graduate Entry Medical School, University of Limerick, Limerick, Ireland.
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Emerging Perils of Extended Spectrum β-Lactamase Producing Enterobacteriaceae Clinical Isolates in a Teaching Hospital of Nepal. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1782835. [PMID: 28119921 PMCID: PMC5227113 DOI: 10.1155/2016/1782835] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/15/2016] [Indexed: 11/21/2022]
Abstract
Introduction. Infections due to extended spectrum β-lactamase producing Enterobacteriaceae are on the rise. They pose serious public health problems due to their resistance to large number of antibiotics. However, little is known about the genotypes of ESBL from Nepal. Therefore, the study presents results of phenotypic and molecular characterization of ESBL producing Escherichia coli and Klebsiella spp. isolated from various clinical specimens in a tertiary care teaching hospital of Nepal. Methods. A total of 172 Enterobacteriaceae clinical isolates recovered from various clinical specimens were analyzed for their antibiotic susceptibility test. Detection of ESBLs was carried out using combination disk test and multiplex PCR for their genotypes (CTX-M, SHV, and TEM). Results. Out of 172 clinical isolates, 70 (40.6%) of them were found ESBL producers. The major source of ESBL producers was urinary tract samples and the highest ESBL production was observed in Escherichia coli (46.5%). Among ESBL genotypes, CTX-M (91.4%) was most predominant, followed by TEM (65.7%) and SHV (11.4%) in both of the isolates. Conclusions. High level of drug resistance and ESBL production was observed among the clinical isolates. There is a need for longitudinal and nationwide surveillance for drug resistance in clinical isolates and antimicrobial stewardship is necessary to guide the appropriate and judicious antibiotic use.
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140
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Two levels of specialization in bacteraemic Escherichia coli strains revealed by their comparison with commensal strains. Epidemiol Infect 2016; 145:872-882. [PMID: 28029088 DOI: 10.1017/s0950268816003010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Bacteraemia caused by Escherichia coli are particularly frequent and severe, contrasting with the commensal character of the strains found in the digestive tract. A better understanding of the relationships between strains of both origins is needed to unravel the pathogenesis of this disease. Two hundred and forty-three commensal strains were compared to 243 bacteraemic strains isolated from adult hosts matched in terms of gender and age, and from similar location and epoch. Phylogenetic grouping, O-type determination, virulence factor content and antibiotic resistance were compared. Compared to commensal strains, the bacteraemic strains were characterized by a higher proportion of B2, C and D phylogroups, and a lower proportion of A, E and F phylogroups. They also had a lower proportion of the B2 subgroup IV (STc141), a higher proportion of virulence factors, and a higher frequency of antibiotic resistance. These differences were more marked for the bacteraemic strains of urinary tract origin with the presence of specific clones, whereas the bacteraemic strains of digestive origin remained non-significantly different from the commensal strains, except for their antibiotic resistance. Thus, two levels of specialization from commensal strains were demonstrated in the bacteraemic strains: resistance to antibiotics in all cases, and virulence for those of urinary tract origin.
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141
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Shimoni Z, Cohen R, Avdiaev R, Froom P. Treatment of febrile geriatric patients with suspected urinary tract infections in a hospital with high rates of ESBL producing bacteria: a cohort study. BMJ Open 2016; 6:e013696. [PMID: 27986743 PMCID: PMC5168616 DOI: 10.1136/bmjopen-2016-013696] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To determine the consequences of treating febrile geriatric patients with a suspected urinary tract infection (UTI) with antibiotics that have high resistance rates due primarily to extended-spectrum β-lactamase (ESBL) producing bacteria. METHODS In this cohort study, we selected 257 consecutive hospitalised patients aged ≥70 years with a chief symptom of fever, possibly due to a UTI and initially treated with antibiotics with rates in our hospital of urinary culture resistance >20%. Patients with severe sepsis were excluded. The main outcomes measures were in vitro bacterial resistance to initial antibiotic therapy (BRIAT), response to therapy, hospitalisation days and mortality. RESULTS Urine cultures were positive in 64.2% (165 of 257) of the patients and BRIAT occurred in 28.0% (72 of 257). Response rates were 100% (93 of 93) in those with bacteria sensitive to initial antibiotic therapy, 95.7% (88 of 92) in the culture negative patients, and 66.7% (48 of 72) in those with BRIAT (p<0.001). There were no deaths due to deterioration during the initial treatment period because of BRIAT. In the patients with BRIAT, the median length of hospitalisation was 3 days longer than that in the other patients (7 and 4 days, respectively, p<0.001). CONCLUSIONS We conclude that initial broad spectrum antibiotic treatment could potentially lower the median length of hospitalisation by 3 days in many hospitalised geriatric patients without an extra-urinary tract source for their fever. This benefit needs to be balanced against the risk to the individual patient and to the general public of increasing bacterial resistance rates to broader spectrum antibiotics often held in reserve.
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Affiliation(s)
- Zvi Shimoni
- Department of Internal Medicine B, Laniado Hospital, Netanya, Israel
- Ruth and Bruce Rappaport School of Medicine, Haifa, Israel
| | - Regev Cohen
- Infectious Disease Department, Laniado Hospital, Netanya, Israel
| | - Ruslan Avdiaev
- Department of Internal Medicine B, Laniado Hospital, Netanya, Israel
| | - Paul Froom
- Department of Clinical Utility, Laniado Hospital, Netanya, Israel
- School of Public Health, University of Tel Aviv, Tel Aviv, Israel
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Kim YA, Kim JJ, Kim H, Lee K. Community-onset extended-spectrum-β-lactamase-producing Escherichia coli sequence type 131 at two Korean community hospitals: The spread of multidrug-resistant E. coli to the community via healthcare facilities. Int J Infect Dis 2016; 54:39-42. [PMID: 27865830 DOI: 10.1016/j.ijid.2016.11.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/08/2016] [Accepted: 11/11/2016] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The recent molecular epidemiology of ESBL-producing Escherichia coli infection in two Korean community hospitals was evaluated in this prospective observational study. METHODS We collected non-duplicated E. coli isolates from consecutive, sequentially encountered patients with community-onset episodes between March and April 2016 in two community hospitals in Gyeonggi-do province, Korea. We studied the prevalence, clinical characteristics and molecular epidemiology of E. coli sequence type 131 (ST131) isolated from the community. RESULTS From a total of 213 E. coli isolates collected from the community, 94 (44.1%) were community-onset healthcare-associated isolates and 119 (55.9%) were community-associated isolates, of which urinary tract infection was the majority. A total of 55 (25.8%) of the 213 E. coli isolates were confirmed to have ESBL genes, which were mainly CTX-M types such as CTX-M-14 and CTX-M-15. There was no difference in the proportion of globally epidemic ST131 clones or that of O25, O16, H30, or H30Rx subclones between community-associated and community-onset healthcare-associated isolates. CONCLUSIONS In this study, considerable ST131 E. coli isolations in the community were observed and about half of them were related to the history of a visit to the healthcare facilities, indicating the spread of multidrug-resistant E. coli to the community via healthcare facilities.
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Affiliation(s)
- Young Ah Kim
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Jin Ju Kim
- Department of Laboratory Medicine, Inha University College of Medicine, Incheon, Korea
| | - Heejung Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Kyungwon Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.
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143
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Xu M, Fan Y, Wang M, Lu X. Characteristics of Extended-Spectrum β-Lactamases-Producing Escherichia coli in Fecal Samples of Inpatients of Beijing Tongren Hospital. Jpn J Infect Dis 2016; 70:290-294. [PMID: 27795466 DOI: 10.7883/yoken.jjid.2016.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We aimed to investigate the prevalence of extended-spectrum β-lactamases (ESBL)-producing Escherichia coli in Beijing Tongren hospital and to identify a possible relation between colonization and infection. The clinical data on 650 inpatients between March 2012 and July 2012 were retrospectively reviewed. The prevalence of ESBL-producing E. coli among the inpatients was 25.7% (167/650), with the highest level (50.0%) in the rheumatology ward and the lowest (10.0%) in intensive care units. Hospital stay more than 2 years prior to infection, the use of antibiotics within 3 months of infection, and the use of glucocorticoids or immunosuppressive drugs were found to be significantly associated with carriage of ESBL-producing E. coli (P < 0.05). In total, 76 sequence types (STs) were revealed by multilocus sequence typing. ST38 (n = 12, 7.2%) was the most common ST, followed by ST10 (n = 10, 6.0%) and ST131 and ST167 (n = 9 and 5.4% each). Among the fecal carriers, only one patient had an active infection, which was caused by an ST38 strain. In conclusion, in Beijing Tongren hospital, the prevalence of ESBL-producing E. coli was not high. The risk factors of carriage of ESBL-producing E. coli are hospitalization and use of antibiotics, glucocorticoids, or immunosuppressive drugs. ST38, ST10, ST131, and ST167 are the prominent genotypes, but almost 50.0% of STs were scarcely distributed.
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Affiliation(s)
- Maoye Xu
- Department of Clinical Laboratory, Beijing Tongren Hospital, Capital Medical University
| | - Yanyan Fan
- Department of Clinical Laboratory, Beijing Tongren Hospital, Capital Medical University
| | - Mei Wang
- Department of Clinical Laboratory, Beijing Tongren Hospital, Capital Medical University
| | - Xinxin Lu
- Department of Clinical Laboratory, Beijing Tongren Hospital, Capital Medical University
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Quan J, Zhao D, Liu L, Chen Y, Zhou J, Jiang Y, Du X, Zhou Z, Akova M, Yu Y. High prevalence of ESBL-producing Escherichia coli and Klebsiella pneumoniae in community-onset bloodstream infections in China. J Antimicrob Chemother 2016; 72:273-280. [PMID: 27624571 DOI: 10.1093/jac/dkw372] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 08/05/2016] [Accepted: 08/09/2016] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVES Community-onset bloodstream infections (COBSIs) caused by ESBL-producing Escherichia coli (ESBL-EC) and ESBL-producing Klebsiella pneumoniae (ESBL-KP) are increasing globally. This study aimed to investigate the epidemiology and risk factors of ESBL-EC and ESBL-KP in COBSIs in China. METHODS A prospective, multicentre study was performed in 28 tertiary hospitals from September 2013 to November 2014. All isolates and ESBLs were microbiologically characterized. A statistical analysis of risk factors was performed using binary logistic regression. The trial was registered with ClinicalTrials.gov (NCT01961206). RESULTS A total of 919 consecutive episodes of COBSIs were reported and 640 E. coli and 279 K. pneumoniae isolates (non-duplicate) were collected. According to the criteria, 662 (72.0%) cases were classified as having community-acquired bloodstream infections, while the remaining 257 (28.0%) were classified as having healthcare-associated bloodstream infections. The proportions of ESBL producers were 55.5% (355/640) among E. coli isolates and 16.5% (46/279) among K. pneumoniae isolates, respectively. Healthcare-associated infections, obstructive urinary tract disease, previous surgical history and use of a cephalosporin antibiotic within 3 months were independent predictors of COBSIs caused by ESBL-EC. Heart failure was the only independent risk factor for COBSIs due to ESBL-KP. Age was not independently associated with infections caused by ESBL producers. CTX-M-14 was the most common ESBL genotype and was widespread throughout the country. CONCLUSIONS ESBL producers are highly prevalent in COBSIs in China, especially among cases caused by E. coli. For these resistant pathogens, clinicians should consider adequate empirical therapy, and different risk factors for prediction should be used in this country.
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Affiliation(s)
- Jingjing Quan
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Dongdong Zhao
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Lilin Liu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Yan Chen
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Jiancang Zhou
- Department of Critical Care Medicine, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Yan Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Xiaoxing Du
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Zhihui Zhou
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Murat Akova
- Department of Infectious Disease, Hacettepe University School of Medicine, Ankara 06100, Turkey
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, China .,Key Laboratory of Infectious Diseases of the Public Health Ministry, First Affiliated Hospital, School of Medicine, Zhejiang University, China
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Zhang H, Zhai Z, Li Q, Liu L, Guo S, Li Q, Yang L, Ye C, Chang W, Zhai J. Characterization of Extended-Spectrum β-Lactamase-Producing Escherichia coli Isolates from Pigs and Farm Workers. J Food Prot 2016; 79:1630-1634. [PMID: 28221927 DOI: 10.4315/0362-028x.jfp-16-093] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Food-producing animals can serve as reservoirs for extended-spectrum β-lactamase (ESBL)-producing Escherichia coli . The present study aimed to characterize and compare ESBL-carrying E. coli isolates from both pigs and farm workers. Rectal swabs were obtained from 60 pigs on four pig-fattening farms (15 samples per farm), and rectal swabs were taken from 40 farm workers on these farms (10 samples per farm). ESBL-carrying E. coli isolates from the workers and pigs were characterized by ESBL genotype, antibiotic susceptibility, enterobacterial repetitive intergenic consensus type, and multilocus sequence type. ESBL-producing E. coli was detected in 34 (56.7%) of 60 pigs, and 20.0% (8 of 40) of the farm workers were positive for ESBL-producing E. coli . More importantly, ESBL-producing E. coli isolates with the same β-lactamase genes, antibiotic resistance profiles, enterobacterial repetitive intergenic consensus types, and multilocus sequence types were detected in both pigs and workers on the same pig farm. These findings were suggestive for transfer of ESBL-producing E. coli between animals and humans.
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Affiliation(s)
- Hongna Zhang
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Zhenzhen Zhai
- Digestive Disease Institute, Central Hospital of Tai'an City, Tai'an 271000, People's Republic of China
| | - Qing Li
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Linghong Liu
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Shuyuan Guo
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Qimeng Li
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Lingling Yang
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Chaoqun Ye
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Weishan Chang
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
| | - Jing Zhai
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, People's Republic of China
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Kaye KS, Pogue JM. Infections Caused by Resistant Gram-Negative Bacteria: Epidemiology and Management. Pharmacotherapy 2016; 35:949-62. [PMID: 26497481 DOI: 10.1002/phar.1636] [Citation(s) in RCA: 223] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Infections caused by resistant gram-negative bacteria are becoming increasingly prevalent and now constitute a serious threat to public health worldwide because they are difficult to treat and are associated with high morbidity and mortality rates. In the United States, there has been a steady increase since 2000 in rates of extended-spectrum β-lactamase-producing Enterobacteriaceae, carbapenem-resistant Enterobacteriaceae, and multidrug-resistant strains of Pseudomonas aeruginosa and Acinetobacter baumannii, particularly among hospitalized patients with intraabdominal infections, urinary tract infections, ventilator-associated pneumonia, and bacteremia. Colonization with resistant gram-negative bacteria is common among residents in long-term care facilities (particularly those residents with an indwelling device), and these facilities are considered important originating sources of such strains for hospitals. Antibiotic resistance is associated with a substantial clinical and economic burden, including increased mortality, greater hospital and antibiotic costs, and longer stays in hospitals and intensive care units. Control of resistant gram-negative infections requires a comprehensive approach, including strategies for risk factor identification, detection and identification of resistant organisms, and implementation of infection-control and prevention strategies. In treating resistant gram-negative infections, a review of surveillance data and hospital-specific antibiograms, including resistance patterns within local institutions, and consideration of patient characteristics are helpful in guiding the choice of empiric therapy. Although only a few agents are available with activity against resistant gram-negative organisms, two recently released β-lactam/β-lactamase inhibitor combinations - ceftolozane/tazobactam and ceftazidime/avibactam - have promising activity against these organisms. In this article, we review the epidemiology, risk factors, and antibiotic resistance mechanisms of gram-negative organisms. In addition, an overview of treatment options for patients with these infections is provided.
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Affiliation(s)
- Keith S Kaye
- Department of Medicine, Detroit Medical Center and Wayne State University, University Health Center, Detroit, Michigan
| | - Jason M Pogue
- Department of Pharmacy, Sinai-Grace Hospital, Detroit Medical Center and Wayne State University School of Medicine, Detroit, Michigan
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147
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Merino I, Shaw E, Horcajada JP, Cercenado E, Mirelis B, Pallarés MA, Gómez J, Xercavins M, Martínez-Martínez L, De Cueto M, Cantón R, Ruiz-Garbajosa P. CTX-M-15-H30Rx-ST131 subclone is one of the main causes of healthcare-associated ESBL-producing Escherichia coli bacteraemia of urinary origin in Spain. J Antimicrob Chemother 2016; 71:2125-30. [PMID: 27494832 DOI: 10.1093/jac/dkw133] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 03/20/2016] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES The objective of this study was to assess the prevalence and molecular epidemiology of ESBL-producing Escherichia coli causing healthcare-associated (HCA) and community-associated (CA) bacteraemia of urinary origin (BUO) in Spain. METHODS An observational cohort study was conducted at eight hospitals from different Spanish geographical areas (2010-11). BUO episodes (n = 425) were classified as HCA (n = 215) and CA (n = 210), and one blood isolate per episode was collected. Susceptibility testing was performed, ESBLs were screened by double-disc diffusion test and ESBL and OXA-1 genes were characterized (PCR and sequencing). Population structure (phylogenetic groups, XbaI-PFGE and MLST) and ST131 subtyping (PCR) were determined. Virulence genes were detected by PCR and virulence score, profiles and extraintestinal pathogenic E. coli (ExPEC) status calculated. RESULTS ESBL-producing E. coli prevalence was 9.2% (39/425). ESBL-producing E. coli episodes were significantly associated with HCA-BUO episodes [14% (30/215) versus 4.3% (9/210); P = 0.001]. The highest non-susceptibility proportions corresponded to ciprofloxacin (97.4%), amoxicillin/clavulanate (74.4%), co-trimoxazole (69.2%) and tobramycin (61.5%). Of the 39 ESBL-producing E. coli isolates, 34 produced CTX-M enzymes (21 CTX-M-15, 11 CTX-M-14 and 2 CTX-M-1). Fifteen STs were identified, the B2-ST131 clone being the most prevalent (54%; 21/39). All ST131 isolates were ExPEC and had the highest virulence scores, but they showed less diversity in virulence profiles than other STs. The H30Rx subclone accounted for most ST131 isolates (20/21), co-produced CTX-M-15 (20/20) and OXA-1 (19/20) enzymes and was associated with HCA episodes (16/20). CONCLUSIONS The CTX-M-15-ST131-H30Rx subclone is a relevant MDR pathogen causing BUO, mainly HCA episodes. The dominance of this subclone with comparatively less diversity of virulence profiles reflects the spread of a successful and MDR ESBL ST131 lineage in Spain.
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Affiliation(s)
- Irene Merino
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain
| | - Evelyn Shaw
- Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain Hospital Universitari de Bellvitge-IDIBELL, Barcelona, Spain
| | - Juan Pablo Horcajada
- Departamento de Enfermedades Infecciosas, Hospital del Mar and Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain CEXS-Universitat Pompeu Fabra, Barcelona, Spain
| | - Emilia Cercenado
- Servicio de Microbiología, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Beatriz Mirelis
- Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain Servicio de Microbiología, Hospital Santa Creu i Sant Pau, Barcelona, Spain
| | - M Angeles Pallarés
- Servicio de Microbiología, Complexo Hospitalario de Pontevedra, Pontevedra, Spain
| | - Juliá Gómez
- Laboratori de Referència de Catalunya, Barcelona, Spain
| | - M Xercavins
- Servicio de Microbiología, Catlab, Hospital Universitari Mútua de Terrassa, Terrassa, Spain
| | - Luis Martínez-Martínez
- Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain Servicio de Microbiología, Hospital Marqués de Valdecilla-IDIVAL, Santander, Spain Departamento de Biología Molecular, Universidad de Cantabria, Santander, Spain
| | - Marina De Cueto
- Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain Unidad Clínica Intercentros de Enfermedades Infecciosas, Microbiología y Medicina Preventiva, Hospitales Universitarios Virgen Macarena y Virgen del Rocío, Sevilla, Spain
| | - Rafael Cantón
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain
| | - Patricia Ruiz-Garbajosa
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain Red Española de Investigación en Patología Infecciosa (REIPI), Instituto de Salud Carlos III, Madrid, Spain
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Park SY, Oh WS, Kim YS, Yeom JS, Choi HK, Kwak YG, Jun JB, Chung JW, Rhee JY, Kim BN. Health care–associated acute pyelonephritis is associated with inappropriate empiric antibiotic therapy in the ED. Am J Emerg Med 2016; 34:1415-20. [DOI: 10.1016/j.ajem.2016.04.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/05/2016] [Accepted: 04/08/2016] [Indexed: 11/16/2022] Open
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149
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Rocha FR, Pinto VPT, Barbosa FCB. The Spread of CTX-M-Type Extended-Spectrum β-Lactamases in Brazil: A Systematic Review. Microb Drug Resist 2016; 22:301-11. [DOI: 10.1089/mdr.2015.0180] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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150
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Logan LK, Renschler JP, Gandra S, Weinstein RA, Laxminarayan R. Carbapenem-Resistant Enterobacteriaceae in Children, United States, 1999-2012. Emerg Infect Dis 2016; 21:2014-21. [PMID: 26486124 PMCID: PMC4622248 DOI: 10.3201/eid2111.150548] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Infection rates have increased in all age groups and settings nationally. The prevalence of carbapenem-resistant Enterobacteriaceae (CRE) infections is increasing in the United States. However, few studies have addressed their epidemiology in children. To phenotypically identify CRE isolates cultured from patients 1–17 years of age, we used antimicrobial susceptibilities of Enterobacteriaceae reported to 300 laboratories participating in The Surveillance Network–USA database during January 1999–July 2012. Of 316,253 isolates analyzed, 266 (0.08%) were identified as CRE. CRE infection rate increases were highest for Enterobacter species, blood culture isolates, and isolates from intensive care units, increasing from 0.0% in 1999–2000 to 5.2%, 4.5%, and 3.2%, respectively, in 2011–2012. CRE occurrence in children is increasing but remains low and is less common than that for extended-spectrum β-lactamase–producing Enterobacteriaceae. The molecular characterization of CRE isolates from children and clinical epidemiology of infection are essential for development of effective prevention strategies.
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