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Al-Shahrani GS, Belali TM. Frequency of drug-resistant bacterial isolates among pregnant women with UTI in maternity and children's hospital, Bisha, Saudi Arabia. Sci Rep 2024; 14:7397. [PMID: 38548851 PMCID: PMC10978862 DOI: 10.1038/s41598-024-58275-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/27/2024] [Indexed: 04/01/2024] Open
Abstract
Urinary tract infections (UTIs) are one of the most prevalent bacterial infections affecting humans, with a higher incidence among women. Pregnant women are at an increased risk of developing UTIs, which can have detrimental consequences for both the mother and fetus. UTIs can be caused by various bacteria, and the prevalence of drug-resistant UTIs in maternity and children's hospitals is a cause for concern due to the potential for severe complications if left untreated. The primary objective of the current study was to determine the distribution of UTI-causing bacteria and investigate the antibiotic sensitivity patterns of isolated cultures obtained from pregnant women with UTIs at the Maternity and Children's Hospital, Bisha, Saudi Arabia. This cross-sectional study was conducted from October 2021 to October 2023, involving the analysis of urine samples collected from 321 participants who acquired UTIs during pregnancy. Using biochemical tests and standard cultures, the urine samples were examined for pathogenic bacteria and their anti-microbial sensitivity patterns. The study analyzed susceptibility results according to the Clinical Laboratory Standards Institute guidelines (M100, 28th Edition, 2018). Bacterial strains demonstrating resistance to three or more antibiotics were classified as multidrug-resistant (MDR). This study revealed the distribution of UTI-causing bacteria to be as follows: Escherichia coli, 57.01%; Klebsiella pneumoniae, 24.61%; Pseudomonas aeruginosa, 4.36%; Proteus mirabilis and Enterobacter cloacae, 3.74%; Streptococcus agalactiae, 3.11%; Enterococcus faecalis, 2.18%; and Staphylococcus aureus, 1.24%. Antimicrobial susceptibility testing varied among gram-positive and gram-negative bacteria. Gentamicin demonstrated the highest sensitivity among both gram-positive and gram-negative bacteria; piperacillin-tazobactam was the second most effective drug against gram-negative bacteria. The bacterial isolates showed varying susceptibility to different antibiotics, with Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa being mainly sensitive to gentamicin, piperacillin-tazobactam, and ciprofloxacin, respectively. The strategies for reducing the risk of UTIs need to be improved to limit the spread of MDR bacteria. These strategies may include promoting hygienic practices and administering appropriate antibiotics to prevent the emergence and spread of drug-resistant bacteria. Further research is required to monitor the trends in antibiotic resistance among UTI-causing bacteria and develop effective strategies for managing this public health menace.
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Affiliation(s)
- Ghady S Al-Shahrani
- Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, 67714, Bisha, Saudi Arabia
| | - Tareg M Belali
- Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, 67714, Bisha, Saudi Arabia.
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2
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When and How to Use MIC in Clinical Practice? Antibiotics (Basel) 2022; 11:antibiotics11121748. [PMID: 36551405 PMCID: PMC9774413 DOI: 10.3390/antibiotics11121748] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/22/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Bacterial resistance to antibiotics continues to be a global public health problem. The choice of the most effective antibiotic and the use of an adapted dose in the initial phase of the infection are essential to limit the emergence of resistance. This will depend on (i) the isolated bacteria and its resistance profile, (ii) the pharmacodynamic (PD) profile of the antibiotic used and its level of toxicity, (iii) the site of infection, and (iv) the pharmacokinetic (PK) profile of the patient. In order to take account of both parameters to optimize the administered treatment, a minimal inhibitory concentration (MIC) determination associated with therapeutic drug monitoring (TDM) and their combined interpretation are required. The objective of this narrative review is thus to suggest microbiological, pharmacological, and/or clinical situations for which this approach could be useful. Regarding the microbiological aspect, such as the detection of antibiotic resistance and its level, the preservation of broad-spectrum β-lactams is particularly discussed. PK-PD profiles are relevant for difficult-to-reach infections and specific populations such as intensive care patients, cystic fibrosis patients, obese, or elderly patients. Finally, MIC and TDM are tools available to clinicians, who should not hesitate to use them to manage their patients.
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3
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Burillo A, Bouza E. Controversies over the management of infections caused by Amp-C- and ESBL-producing Enterobacterales : what questions remain for future studies? Curr Opin Infect Dis 2022; 35:575-582. [PMID: 35942862 DOI: 10.1097/qco.0000000000000863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
PURPOSE OF REVIEW The continuous rise in infections caused by third-generation cephalosporin-resistant Enterobacterales (e.g. extended-spectrum beta-lactamase- or AmpC-producing Enterobacterales ) is a major health concern. Carbapenems are regarded as the antibiotics of choice for the treatment of these infections. However, their indiscriminant use is not without consequences, and has contributed to the emergence of carbapenem-resistant Enterobacterales .In this review, we discuss the available evidence supporting the use of other betalactams, nonbetalactams and the new betalactams/beta-lactamase inhibitors (BLA/BLI) to treat these infections. We also analyze unresolved issues in this field. RECENT FINDINGS Piperacillin tazobactam (PTZ) was classically recommended as a carbapenem-sparing agent. However, data have emerged against its use and it is now a controversial recommendation. IDSA, European and British guidelines reject the empirical use of PTZ for these pathogens, reserving its use for rare clinical situations.Other issues that continue to generate debate are the use of extended infusion (3 h) PTZ, the use of older antibiotics, a shortened course of carbapenems and reserving the new BLA/BLI for these infections. SUMMARY New treatment strategies should be based on clinical evidence, local epidemiology and the microbiological activity of these drugs.
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Affiliation(s)
- Almudena Burillo
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón.,Medicine Department, School of Medicine, Universidad Complutense de Madrid.,Instituto de Investigación Sanitaria Gregorio Marañón
| | - Emilio Bouza
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón.,Medicine Department, School of Medicine, Universidad Complutense de Madrid.,Instituto de Investigación Sanitaria Gregorio Marañón.,CIBER de Enfermedades Respiratorias (CIBERES CB06/06/0058), Madrid, Spain
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Zha L, Li X, Ren Z, Zhang D, Zou Y, Pan L, Li S, Chen S, Tefsen B. Pragmatic Comparison of Piperacillin/Tazobactam versus Carbapenems in Treating Patients with Nosocomial Pneumonia Caused by Extended-Spectrum β-Lactamase-Producing Klebsiella pneumoniae. Antibiotics (Basel) 2022; 11:antibiotics11101384. [PMID: 36290042 PMCID: PMC9598608 DOI: 10.3390/antibiotics11101384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/04/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
The effectiveness of piperacillin/tazobactam for managing nosocomial pneumonia caused by extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae is unknown. To answer this question, we conducted a retrospective cohort study in two tertiary teaching hospitals of patients admitted between January 2018 and July 2021 with a diagnosis of nosocomial pneumonia caused by ESBL-producing K. pneumoniae receiving either piperacillin/tazobactam or carbapenems within 24 h from the onset of pneumonia for at least 72 h. Clinical outcomes, including 28-day mortality and 14-day clinical and microbiological cure, were analyzed. Of the 136 total patients, 64 received piperacillin/tazobactam and 72 received carbapenems. The overall 28-day mortality was 19.1% (26/136). In the inverse probability of treatment weighted cohort, piperacillin/tazobactam therapy was not associated with worse clinical outcomes, as the 28-day mortality (OR, 0.82, 95% CI, 0.23–2.87, p = 0.748), clinical cure (OR, 0.94, 95% CI, 0.38–2.35, p = 0.894), and microbiological cure (OR, 1.10, 95% CI, 0.53–2.30, p = 0.798) were comparable to those of carbapenems. Subgroup analyses also did not demonstrate any statistical differences. In conclusion, piperacillin/tazobactam could be an effective alternative to carbapenems for treating nosocomial pneumonia due to ESBL-producing K. pneumoniae when the MICs are ≤8 mg/L.
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Affiliation(s)
- Lei Zha
- Intensive Care Unit, Conch Hospital of Anhui Medical University, Wuhu 241000, China
- Department of Biological Sciences, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China
- Institute of Infection and Global Health, University of Liverpool, Liverpool L69 7BE, UK
- Correspondence: (L.Z.); (B.T.)
| | - Xiang Li
- Postgraduate School, Wannan Medical College, Wuhu 241000, China
| | - Zhichu Ren
- Postgraduate School, Wannan Medical College, Wuhu 241000, China
| | - Dayan Zhang
- Postgraduate School, Wannan Medical College, Wuhu 241000, China
| | - Yi Zou
- Postgraduate School, Wannan Medical College, Wuhu 241000, China
| | - Lingling Pan
- Cardiology Department, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, China
| | - Shirong Li
- Pulmonary and Critical Care Department, The Second People’s Hospital of Wuhu, Wuhu 241000, China
| | - Shanghua Chen
- Intensive Care Unit, The Second People’s Hospital of Wuhu, Wuhu 241000, China
| | - Boris Tefsen
- Department of Molecular Microbiology, Utrecht University, 3584 CH Utrecht, The Netherlands
- Natural Sciences, Ronin Institute, Montclair, NJ 07043, USA
- Correspondence: (L.Z.); (B.T.)
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Vallée M, Bey E, Bouiller K, le Goux C, Pimpie R, Tourret-Arnaud J, Lina G, Figueiredo S, Chauvin A, Gavazzi G, Malavaud S, Sotto A, Bruyère F. Epidemiology and risk factors for ureteral stent-associated urinary tract infections in non-transplanted renal patients: a systematic review of the literature. World J Urol 2021; 39:3845-3860. [PMID: 33991215 DOI: 10.1007/s00345-021-03693-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 04/03/2021] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Pathophysiology and risk factors for Ureteral Stent-Associated Urinary Tract Infection (USAUTI) have been poorly investigated. This situation results in highly diverse practices regarding USAUTI prevention, diagnosis and treatment. The aim of the present study was to describe the epidemiology and risk factors for USAUTI in non-transplanted patients. METHODS We conducted a systematic literature review based on a comprehensive PubMed® bibliographic strategy, between October 1998 and March 2020. The methodological quality of the studies included was analyzed according to dedicated grids. The main endpoints were the correlation between different potential risk factors and infection ureteral stent-associated urinary tract infection or colonization rate. Conclusions and their level of evidence were reported on the basis of a critical analysis of the best available scientific evidence. This work has been submitted to a national review, which enabled the potentially divergent opinions of experts to be collected, thereby ensuring adequate quality of data. RESULTS AND CONCLUSION Twenty-six studies out of the 505 articles identified, were included in the final analysis. Staphylococcus spp, E. coli, Klebsiella spp, Pseudomona aeruginosa, Enterococcus spp. and Candida spp. were the microorganisms most often responsible for asymptomatic bacteriuria (ABU) or USAUTI. Longer indwelling time, diabetes mellitus, female gender, chronic renal failure, diabetic nephropathy and cancer were identified as risk factors for ABU and ureteral stent colonization. No specific risk factor for UTI was identified in the literature studied. A causal relationship between ureteral stent colonization and USAUTI or urosepsis remains to be demonstrated.
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Affiliation(s)
- Maxime Vallée
- CHU La Milétrie, Service d'Urologie et de Transplantations rénales, CHU de Poitiers, 2 Rue de la Milétrie, 86021, Poitiers, France. .,Université de Poitiers INSERM U1070, "Pharmacologie Des Anti-Infectieux", UFR Médecine-Pharmacie, Pôle Biologie Sante, 1 rue Georges Bonnet, Bâtiment B36 TSA 51106, 86073, Poitiers Cedex 9, France.
| | - Elsa Bey
- Urology and Andrology Department, University Hospital of Nimes, Place du Professeur Debré, 30029, Nîmes Cedex, France
| | - Kevin Bouiller
- Service de Maladies Infectieuses, Centre Hospitalo-Universitaire de Besançon, Besançon, France
| | | | - Romain Pimpie
- Direction Générale-Hygiène Hospitalière, Hôpital Privé Dijon Bourgogne Ramsay Santé, 22 avenue Françoise Giroud, 21000, Dijon, France
| | - Jérome Tourret-Arnaud
- Département D'Urologie, Néphrologie Et Transplantation, Groupe Hospitalier Pitié Salpêtrière Charles Foix, Paris, France
| | - Gérard Lina
- Centre International de Recherche en Infectiologie, Institut Des Agent Infectieux, Hôpital de La Croix Rousse, Hospices Civils de Lyon, Lyon, France
| | - Samy Figueiredo
- Service D'Anesthésie Réanimation Médecine Péri Opératoire, Hôpital Bicêtre. Assistance Publique-Hôpitaux de Paris, Université Paris Saclay, 78 Rue du Général Leclerc, 94275, Le Kremlin Bicêtre, France
| | - Anthony Chauvin
- Service D'Accueil Des Urgences/SMUR, CHU Lariboisière, Paris, France
| | | | - Sandra Malavaud
- Unité de Prévention du Risque Infectieux Associé Aux Soins, CHU de Toulouse, France
| | - Albert Sotto
- Service Des Maladies Infectieuses Et Tropicales, CHU de Nîmes, France
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Bru J, Alfandari S, Bleibtreu A, Chavanet P, Gauzit R, Lescure X, Lesprit P, Tattevin P. Carbapenems versus beta-lactam/beta-lactamase inhibitors to treat ESBL-producing Enterobacteriaceae infections. Med Mal Infect 2020; 50:313-315. [DOI: 10.1016/j.medmal.2019.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 09/13/2019] [Indexed: 11/26/2022]
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Bader MS, Loeb M, Leto D, Brooks AA. Treatment of urinary tract infections in the era of antimicrobial resistance and new antimicrobial agents. Postgrad Med 2019; 132:234-250. [PMID: 31608743 DOI: 10.1080/00325481.2019.1680052] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Urinary tract infections (UTIs) caused by antibiotic-resistant Gram-negative bacteria are a growing concern due to limited treatment options. Knowledge of the common uropathogens in addition to local susceptibility patterns is essential in determining appropriate empiric antibiotic therapy of UTIs. The recommended first-line empiric antibiotic therapy for acute uncomplicated bacterial cystitis in otherwise healthy adult nonpregnant females is a 5-day course of nitrofurantoin, a 3-g single dose of fosfomycin tromethamine, or a 5-day course of pivmecillinam. High rates of resistance for trimethoprim-sulfamethoxazole and ciprofloxacin preclude their use as empiric treatment of UTIs in several communities, particularly if patients who were recently exposed to them or in patients who are at risk of infections with extended-spectrum β-lactamases (ESBLs)-producing Enterobacteriales. Second-line options include oral cephalosporins such as cephalexin or cefixime, fluoroquinolones and β-lactams, such as amoxicillin-clavulanate. Current treatment options for UTIs due to AmpC- β -lactamase-producing Enterobacteriales include nitrofurantoin, fosfomycin, pivmecillinam, fluoroquinolones, cefepime, piperacillin-tazobactam and carbapenems. Treatment oral options for UTIs due to ESBLs-E coli include nitrofurantoin, fosfomycin, pivmecillinam, amoxicillin-clavulanate, finafloxacin, and sitafloxacin while pivmecillinam, fosfomycin, finafloxacin, and sitafloxacin are treatment oral options for ESBLs- Klebsiella pneumoniae. Parenteral treatment options for UTIs due to ESBLs-producing Enterobacteriales include piperacillin-tazobactam (for ESBL-E coli only), carbapenems including meropenem/vaborbactam, imipenem/cilastatin-relebactam, and sulopenem, ceftazidime-avibactam, ceftolozane-tazobactam, aminoglycosides including plazomicin, cefiderocol, fosfomycin, sitafloxacin, and finafloxacin. Ceftazidime-avibactam, meropenem/vaborbactam, imipenem/cilastatin-relebactam, colistin, fosfomycin, aztreonam and ceftazidime-avibactam, aztreonam and amoxicillin-clavulanate, aminoglycosides including plazomicin, cefiderocol, tigecycline are treatment options for UTIs caused by carbapenem-resistant Enterobacteriales (CRE). Treatment options for UTIs caused by multidrug resistant (MDR)-Pseudomonas spp. include fluoroquinolones, ceftazidime, cefepime, piperacillin-tazobactam, carbapenems including imipenem-cilastatin/relebactam, meropenem, and fosfomycin, ceftolozane-tazobactam, ceftazidime-avibactam, aminoglycosides including plazomicin, aztreonam and ceftazidime-avibactam, cefiderocol, and colistin. It is important to use the new antimicrobials wisely for treatment of UTIs caused by MDR-organisms to avoid resistance development.
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Affiliation(s)
- Mazen S Bader
- Staff Physician, Department of Medicine, Hamilton Health Sciences, Juravinski hospital and Cancer Centre , Hamilton, Ontario, Canada
| | - Mark Loeb
- Departments of Pathology & Molecular Medicine and Clinical, Epidemiology & Biostatistics, McMaster University , Hamilton, Ontario, Canada
| | - Daniela Leto
- Department of Medicine and Pathology and Molecular Medicine, McMaster University, Hamilton Health Sciences, Juravinski Hospital and Cancer Centre , Hamilton, Ontario, Canada
| | - Annie A Brooks
- Department of Pharmacy, Hamilton Health Sciences, Juravinski hospital and Cancer Centre , Hamilton, Ontario, Canada
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8
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Gould M, Ginn AN, Marriott D, Norris R, Sandaradura I. Urinary piperacillin/tazobactam pharmacokinetics in vitro to determine the pharmacodynamic breakpoint for resistant Enterobacteriaceae. Int J Antimicrob Agents 2019; 54:240-244. [PMID: 31108222 DOI: 10.1016/j.ijantimicag.2019.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 05/08/2019] [Accepted: 05/08/2019] [Indexed: 11/24/2022]
Abstract
Urinary tract infections caused by multidrug-resistant Enterobacteriaceae are a growing burden worldwide. Recent studies of urinary pharmacokinetics described high piperacillin/tazobactam (TZP) concentrations in urine, but it is unknown whether this results in treatment efficacy. This study investigated the pharmacodynamics of TZP in a static in vitro model for Enterobacteriaceae to determine the concentration-effect relationship and ultimately the required free (unbound) time above the minimum inhibitory concentration (fT>MIC) required for bacterial killing. The static simulation model investigated TZP fT>MIC between 0% and 100%. Resistant Escherichia coli and Klebsiella pneumoniae isolates with piperacillin/tazobactam MICs of 4096/512, 1024/128 and 128/16 mg/L were investigated; two of the three organisms were carbapenemase-producers. Clinical efficacy was determined as a 3-log reduction over the dosing interval by comparing interval growth with controls. TZP was observed to exhibit time dependence for all organisms. The fT>MIC was determined to be 37.5%, 37.5% and 50% for MICs of 4096/512, 1024/128 and 128/16 mg/L, respectively. Linear regression identified the overall target to be 49.85 ± 16.9% fT>MIC. In conclusion, bactericidal activity against TZP-resistant Enterobacteriaceae occurred at 49.85 ± 16.9% fT>MIC. This suggests that highly resistant urinary organisms, including carbapenemase-producers, with MICs up to 4096/512 mg/L could be treated with TZP. Further investigations are required to elucidate urinary breakpoints and to explore the impact of different resistance mechanisms.
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Affiliation(s)
- M Gould
- The University of Notre Dame, School of Medicine Sydney, 160 Oxford St., Darlinghurst, NSW 2010, Australia.
| | - A N Ginn
- Centre for Infectious Diseases and Microbiology Laboratory Services, NSW Health Pathology, Westmead Hospital, Sydney, New South Wales, Australia; Centre for Infectious Diseases and Microbiology, The Westmead Institute for Medical Research, The University of Sydney, Westmead Hospital, Westmead, New South Wales, Australia
| | - D Marriott
- St Vincent's Hospital, Sydney, 390 Victoria St., Darlinghurst, NSW 2010, Australia
| | - R Norris
- St Vincent's Hospital, Sydney, 390 Victoria St., Darlinghurst, NSW 2010, Australia; Discipline of Clinical Pharmacology, School of Medicine & Public Health, University of Newcastle, Newcastle, NSW 2300, Australia; Hunter Medical Research Institute, Lot 1, Kookaburra Circuit, New Lambton Heights, NSW 2305, Australia
| | - I Sandaradura
- Centre for Infectious Diseases and Microbiology Laboratory Services, NSW Health Pathology, Westmead Hospital, Sydney, New South Wales, Australia; St Vincent's Hospital, Sydney, 390 Victoria St., Darlinghurst, NSW 2010, Australia
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Current options for the treatment of infections due to extended-spectrum beta-lactamase-producing Enterobacteriaceae in different groups of patients. Clin Microbiol Infect 2019; 25:932-942. [PMID: 30986558 DOI: 10.1016/j.cmi.2019.03.030] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/27/2019] [Accepted: 03/31/2019] [Indexed: 01/15/2023]
Abstract
BACKGROUND Extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) are a frequent cause of invasive infections worldwide. Carbapenems are nowadays the most used drugs to treat these infections. However, due to the increasing rates of resistance to these antimicrobials, carbapenem-sparing alternatives are being investigated. OBJECTIVES AND SOURCES The aim of this narrative literature review is to summarize the published information on the currently available antibiotics for the treatment of ESBL-E infections, providing specific information on three subgroups of patients: Group 1, patients with severe infections or infections from high-risk sources or in severely immunocompromised patients; Group 2, patients with non-severe infections from intermediate-risk source; and Group 3, patients with non-severe urinary tract infection. CONTENT AND IMPLICATIONS For patients in Group 1, the current data would support the use of carbapenems. For milder infections, however, particularly urinary tract infections, other non-carbapenem antibiotics can be considered in selected cases, including beta-lactam/beta-lactam inhibitor combinations, cephamycins, temocillin and aminoglycosides. While specific studies should be performed in these situations, individualized decisions may be taken in order to avoid overuse of carbapenems.
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10
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Arana DM, Sánchez A, Bautista V, Oteo-Iglesias J, Alós JI. ESBL-producing-multidrug resistant E. coli population from urinary tract infections is less diverse than non-ESBL-multidrug resistant population. Enferm Infecc Microbiol Clin 2019; 37:652-655. [PMID: 30979526 DOI: 10.1016/j.eimc.2019.02.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/15/2019] [Accepted: 02/19/2019] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The aim of this study was to compare the population structure of three different representative groups of E. coli isolates causing urinary tract infections in a large area of Madrid, Spain: two groups of multidrug resistant isolates (MDR), ESBL- and non-ESBL producers, and one of fully-susceptible isolates (35 isolates in each group). METHODS Epidemiological relatedness was studied by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). The presence of genes encoding ESBL was determined by using PCR and sequencing. Antimicrobial susceptibility testing was performed by broth microdilution. RESULTS PFGE analysis revealed a high degree of genetic diversity in susceptible and non-ESBL-MDR groups. However, the ESBL-MDR E. coli population was less diverse and a large cluster consisting of ST131 and CTX-M-15-producing isolates was detected. CONCLUSIONS The present study revealed that ESBL-producing-MDR E. coli population was less diverse than the non-ESBL MDR group and that ST131 was dominant among CTX-M-15-producing isolates that reflects the spread of this successful MDR lineage.
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Affiliation(s)
- David M Arana
- Servicio de Microbiología, Hospital Universitario Getafe, Madrid, Spain
| | - Aída Sánchez
- Servicio Microbiología, Laboratorio Clínico General BR Salud, Hospital Infanta Sofía, San Sebastián de los Reyes, Madrid, Spain
| | - Verónica Bautista
- Laboratorio de Referencia e Investigación en Resistencia a Antibióticos, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain; Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Jesús Oteo-Iglesias
- Laboratorio de Referencia e Investigación en Resistencia a Antibióticos, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain; Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan-Ignacio Alós
- Servicio de Microbiología, Hospital Universitario Getafe, Madrid, Spain.
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Pilmis B, Zahar JR. Ventilator-associated pneumonia related to ESBL-producing gram negative bacilli. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:424. [PMID: 30581832 DOI: 10.21037/atm.2018.09.34] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ventilator-associated pneumonia (VAP) is one of the most frequent cause of intensive care unit (ICU) acquired infections. The worldwide spreading of extended spectrum beta-lactamase producing enterobacteriaceae (ESBL-PE) represents a major problem encountered more and more frequently in ICU. Among ICU patients, between 5% to 25% are ESBL-PE carriers. Whereas, previous carriage is the major risk factors associated with VAP related to ESBL-PE, among carriers, only 5% to 20% will develop a VAP related to ESBL-PE. Also, diagnosis and therapeutic delay are associated with length of stay and higher morbidity, and mortality, therefore, early identification of patients at risk of ESBL-PE related infections is crucial for early implementation of effective antibiotic therapy. VAP related to ESBL-PE should be considered in: previous colonized patients in case of late onset pneumonia and/or when several antibiotic courses precede the infectious episode or even in patients with shock. Among non-colonized patients, if VAP occurs, the risk being related to ESBL-PE is less than 1%. In the future, new rapid microbiological diagnostic tests will allow an early diagnosis. According to recent data, empirical antibiotic therapy should be based on carbapenems. Other alternative antibiotic classes could be used for de-escalation. However, several pharmacodynamic and pharmacokinetics precautions should be taken to achieve drug concentrations at site of infection and except to cure the infected patient.
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Affiliation(s)
- Benoit Pilmis
- Antimicrobial Stewardship Team, Hospital Paris Saint Joseph, 185 rue Raymond Losserand, 75014 Paris, France
| | - Jean-Ralph Zahar
- Department of Microbiology, Hospital Paris Seine Saint Denis, 125 rue de Stalingrad 93000 Bobigny, France.,UMR 1137, IAME Team 5, DeSCID: Decision SCiences in Infectious Diseases, Control and Care, INSERM, UFR SMBH, Paris 13, Paris Cité University, Paris, France
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Heller AA, Lockwood SY, Janes TM, Spence DM. Technologies for Measuring Pharmacokinetic Profiles. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2018; 11:79-100. [PMID: 29324183 DOI: 10.1146/annurev-anchem-061417-125611] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The creation of a pharmacokinetic (PK) curve, which follows the plasma concentration of an administered drug as a function of time, is a critical aspect of the drug development process and includes such information as the drug's bioavailability, clearance, and elimination half-life. Prior to a drug of interest gaining clearance for use in human clinical trials, research is performed during the preclinical stages to establish drug safety and dosing metrics from data obtained from the PK studies. Both in vivo animal models and in vitro platforms have limitations in predicting human reaction to a drug due to differences in species and associated simplifications, respectively. As a result, in silico experiments using computer simulation have been implemented to accurately predict PK parameters in human studies. This review assesses these three approaches (in vitro, in vivo, and in silico) when establishing PK parameters and evaluates the potential for in silico studies to be the future gold standard of PK preclinical studies.
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Affiliation(s)
- A A Heller
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA;
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - S Y Lockwood
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - T M Janes
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA;
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - D M Spence
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
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Barbier F, Bailly S, Schwebel C, Papazian L, Azoulay É, Kallel H, Siami S, Argaud L, Marcotte G, Misset B, Reignier J, Darmon M, Zahar JR, Goldgran-Toledano D, de Montmollin É, Souweine B, Mourvillier B, Timsit JF. Infection-related ventilator-associated complications in ICU patients colonised with extended-spectrum β-lactamase-producing Enterobacteriaceae. Intensive Care Med 2018; 44:616-626. [PMID: 29663045 DOI: 10.1007/s00134-018-5154-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 03/27/2018] [Indexed: 12/14/2022]
Abstract
PURPOSE To investigate the clinical significance of infection-related ventilator-associated complications (IVAC) and their impact on carbapenem consumption in mechanically ventilated (MV) patients colonised with extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBLE). METHODS Inception cohort study from the French prospective multicenter OUTCOMEREA database (17 ICUs, 1997-2015) including all ESBLE carriers (systematic rectal swabbing at admission then weekly and/or urinary or superficial surgical site colonisation) with MV duration > 48 h and ≥ 1 episode of IVAC after carriage documentation. All ICU-acquired infections were microbiologically documented. RESULTS The 318 enrolled ESBLE carriers (median age 68 years; males 67%; medical admission 68%; imported carriage 53%) experienced a total of 576 IVAC comprising 361 episodes (63%) without documented infection, 124 (21%) related to infections other than ventilator-associated pneumonia (VAP), 73 (13%) related to non-ESBLE VAP and 18 (3%) related to ESBLE VAP. Overall, ESBLE infections accounted for only 43 episodes (7%). Carbapenem exposure within the preceding 3 days was the sole independent predictor of ESBLE infection as the causative event of IVAC, with a protective effect (adjusted odds ratio 0.2, 95% confidence interval 0.05-0.6; P < 0.01). Carbapenems were initiated in 9% of IVAC without infection, 15% of IVAC related to non-VAP infections, 42% of IVAC related to non-ESBLE VAP, and 56% of IVAC related to ESBLE VAP (ESBLE VAP versus non-ESBLE VAP: P = 0.43). CONCLUSIONS IVAC in ESBLE carriers mostly reflect noninfectious events but act as a strong driver of empirical carbapenem consumption. ESBLE infections are scarce yet hard to predict, strengthening the need for novel diagnostic approaches and carbapenem-sparing alternatives.
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Affiliation(s)
| | - Sébastien Bailly
- UMR 1137, IAME Team 5, DeSCID: Decision SCiences in Infectious Diseases, Control and Care, INSERM, Paris Diderot, Sorbonne Paris Cité University, Paris, France
| | - Carole Schwebel
- Medical ICU, Albert Michallon University Hospital, Grenoble, France
| | - Laurent Papazian
- Respiratory and Infectious Diseases ICU, North Hospital, Marseille, France
| | - Élie Azoulay
- Medical ICU, Saint-Louis Hospital, APHP, Paris, France
| | - Hatem Kallel
- Medical Surgical ICU, Andrée Rosemon Hospital, Cayenne, France
| | - Shidasp Siami
- Medical Surgical ICU, Corbeil-Essone Hospital, Corbeil-Essone, France
| | - Laurent Argaud
- Medical ICU, Edouard-Herriot University Hospital, Lyon, France
| | | | - Benoît Misset
- Medical ICU, Charles Nicolle University Hospital, Rouen, France
| | - Jean Reignier
- Medical ICU, Hôtel-Dieu University Hospital, Nantes, France
| | | | | | | | | | | | - Bruno Mourvillier
- Medical and Infectious Diseases ICU, Bichat-Claude Bernard Hospital, APHP, 46 Rue Henri-Huchard, 75877, Paris Cedex 18, France
| | - Jean-François Timsit
- UMR 1137, IAME Team 5, DeSCID: Decision SCiences in Infectious Diseases, Control and Care, INSERM, Paris Diderot, Sorbonne Paris Cité University, Paris, France. .,Medical and Infectious Diseases ICU, Bichat-Claude Bernard Hospital, APHP, 46 Rue Henri-Huchard, 75877, Paris Cedex 18, France.
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14
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Pilmis B, Jullien V, Tabah A, Zahar JR, Brun-Buisson C. Piperacillin-tazobactam as alternative to carbapenems for ICU patients. Ann Intensive Care 2017; 7:113. [PMID: 29127502 PMCID: PMC5681454 DOI: 10.1186/s13613-017-0334-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 10/26/2017] [Indexed: 12/19/2022] Open
Abstract
Several studies suggest that alternatives to carbapenems, and particulary beta-lactam/beta-lactamase inhibitor combinations, can be used for therapy of extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-PE)-related infections in non-ICU patients. Little is known concerning ICU patients in whom achieving the desired plasmatic pharmacokinetic/pharmacodynamic (PK/PD) target may be difficult. Also, in vitro susceptibility to beta-lactamase inhibitors might not translate into clinical efficacy. We reviewed the recent clinical studies examining the use of BL/BLI as alternatives to carbapenems for therapy of bloodstream infection, PK/PD data and discuss potential ecological benefit from avoiding the use of carbapenems. With the lack of prospective randomized studies, treating ICU patients with ESBL-PE-related infections using piperacillin-tazobactam should be done with caution. Current data suggest that BL/BLI empirical use should be avoided for therapy of ESBL-PE-related infection. Also, definitive therapy should be reserved to patients in clinical stable condition, after microbial documentation and results of susceptibility tests. Optimization of administration and higher dosage should be used in order to reach pharmacological targets.
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Affiliation(s)
- Benoit Pilmis
- Service de maladies infectieuses et tropicales, Hôpital Necker Enfants malades, Service de maladies infectieuses et tropicales, Université Paris Descartes, Paris, France.,Equipe mobile de microbiologie clinique, Groupe Hospitalier Paris Saint-Joseph, Paris, France
| | - Vincent Jullien
- Service de Pharmacologie, Hôpital Européen Georges Pompidou, Université Paris Descartes, Paris, France.,INSERM U1129, Paris, France
| | - Alexis Tabah
- Intensive Care Unit, The Redcliffe Hospital, Brisbane, Australia.,Burns, Trauma and Critical Care Research Centre, The University of Queensland, Brisbane, Australia
| | - Jean-Ralph Zahar
- Département de Microbiologie Clinique, Unité de Contrôle et de Prévention du risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, CHU Avicenne, 125 rue de Stalingrad, 9300, Bobigny, France. .,Infection Control Unit, IAME, UMR 1137, Université Paris 13, Sorbonne Paris Cité, Paris, France.
| | - Christian Brun-Buisson
- Réanimation médicale, Hôpital Henri Mondor, Université Paris Est Créteil (UPEC), Créteil, France
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