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Shafiekhani M, Fatemi SA, Hosseini P, Marhemati F, Mohammadi S, Sharifi F, Moorkani Kurde Esfahani Pour A, Sadeghi Habibabad F, Saad Abadi N, Shorafa E, Azadi S. Pharmacokinetic and Pharmacodynamic Considerations of Novel Antibiotic Agents for Pediatric Infections: A Narrative Review. Surg Infect (Larchmt) 2023; 24:703-715. [PMID: 37831932 DOI: 10.1089/sur.2023.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023] Open
Abstract
Background: Currently, the escalation of microbial resistance poses a significant global challenge. Children are more susceptible to develop infections and therefore are prescribed antibiotics more frequently. The overuse and misuse of antibiotics in pediatric patients can play a considerable role in developing microbial resistance. Accordingly, many policies, including research into new antibiotic agents have been recommended to combat microbial resistance. Recent developments in novel antibiotics have shown promising results against multi-drug resistant (MDR) and extensive drug resistance (XDR) pathogens. However, as pediatric patients are typically excluded from the clinical trials of new medications, labeling and information about approved antibiotics should be improved. This study aimed to evaluate antibiotics having been introduced to the market in the last decade focusing on pediatric population. Methods: This study reviewed the published literatures on novel FDA-approved antibiotics released between 2010 and 2022. Results: Finally, seven newly approved antibiotics including ceftaroline fosamil, ceftazidime-avibactam, ceftolozane-tazobactam, ceftobiprole, imipenem-cilastatin-relebactam, meropenem-vaborbactam, and tedizolid were considered in the present review-article. All relevant data extracted from literatures, were discussed in different subtitles of "Pharmacology", "Mechanism of action", "Indication", "Dosage regimen and pharmacokinetic and pharmacodynamic properties", "Dosage adjustment in renal/liver failure", "Resistance pattern", and "Adverse drug events". Conclusion: This study reviewed available data on seven new antibiotic agents and their pharmacodynamic and pharmacokinetic properties, with a particular focus on their use in pediatric patients. The information presented in this review will be useful for healthcare professionals in selecting appropriate antibiotics for pediatric patients and for researchers in achieving the ideal therapeutic regimens.
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Affiliation(s)
- Mojtaba Shafiekhani
- Department of Clinical Pharmacy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Shiraz Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Shiraz Transplant Center, Abu-Ali Sina Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Pouria Hosseini
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Marhemati
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soniya Mohammadi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Sharifi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | | | - Negin Saad Abadi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Eslam Shorafa
- Department of Pediatrics, Division of Pediatric Intensive Care, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soha Azadi
- Department of Clinical Pharmacy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
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Exposure-Efficacy Analyses Support Optimal Dosing Regimens of Ceftolozane/Tazobactam in Participants with Hospital-Acquired/Ventilator-Associated Bacterial Pneumonia in ASPECT-NP. Antimicrob Agents Chemother 2022; 66:e0139921. [PMID: 35471040 PMCID: PMC9112930 DOI: 10.1128/aac.01399-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
An exposure–efficacy analysis of the phase 3 ASPECT-NP trial was performed to evaluate the relationship between plasma exposure of ceftolozane and tazobactam and efficacy endpoints (primary: 28-day all-cause mortality; key secondary: clinical cure at test-of-cure visit) in adult participants with hospital-acquired or ventilator-associated bacterial pneumonia (HABP/VABP). Participants (N = 231) from the ceftolozane/tazobactam treatment group in the intention-to-treat population who had pharmacokinetic data available and relevant baseline lower respiratory tract (LRT) pathogen(s) susceptibility data were included. Population pharmacokinetic models were used to predict individual ceftolozane and tazobactam plasma exposure measures (percentage of the interdose interval with free drug concentrations above the MIC [%ƒT>MIC] and %ƒT above a threshold [%ƒT>CT = 1 μg/mL], respectively) associated with the last dose using the highest ceftolozane/tazobactam MIC for the relevant baseline LRT pathogens. Efficacy measures were comparable between the baseline LRT pathogens and across MIC cutoffs (1–8 μg/mL). Most participants (82%) had 99% ƒT>MIC for ceftolozane; 9% (N = 21/231) had 0% ƒT>MIC due to high MICs of the LRT pathogen (64–256 μg/mL). The %ƒT>MIC for ceftolozane exceeded 73% for all participants with baseline LRT pathogen(s) MIC ≤4 μg/mL. All 231 participants achieved the tazobactam pharmacokinetic/pharmacodynamic target of >20% ƒT>CT where CT = 1 μg/mL. For either efficacy endpoint, median ceftolozane %ƒT>MIC was 99% in participants achieving efficacy. No exposure–efficacy trend was observed for ceftolozane or tazobactam. These results further support the recommended ceftolozane/tazobactam dosing regimens evaluated in ASPECT-NP for patients with HABP/VABP.
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Pharmacokinetic/pharmacodynamic simulations of cost-effective dosage regimens of ceftolozane/tazobactam and ceftazidime/avibactam in patients with renal impairment. Antimicrob Agents Chemother 2022; 66:e0210421. [PMID: 35041500 DOI: 10.1128/aac.02104-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The pharmacokinetics of ceftolozane/tazobactam (TOL/TAZ) and ceftazidime/avibactam (CEF/AVI) is influenced by renal function. Application of recommended dosages in patients with renal impairment require to use fractions of the full dose, as only one dosage is available for both antibiotics. The objective of this study was to evaluate the adequacy of alternative dosage regimens based on the full dose. We performed pharmacokinetic/pharmacodynamic (PK/PD) simulations of recommended and alternative dosage regimens in patients with various degrees of renal impairment, by using the Pmetrics program. Alternative regimens included longer dosage interval and prolonged infusions of the full dose for both drugs. Probabilities of target attainment (PTA) were assessed considering PK/PD targets defined for cephalosporins and beta-lactamase inhibitors as well as MIC breakpoints. The risk of overexposure was also assessed. Results showed that alternative dosage regimens based on a full dose of TOL/TAZ and CEF/AVI administered every 12 or 24h were associated with PTA similar to that of recommended dosages, especially when administered as prolonged infusion. The alternative dosage regimens were not associated with overexposure in most cases. In addition, those regimens could reduce dosing errors, drug cost and nurse labor. Clinical investigation of those alternative dosage regimens would be required before implementation.
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4
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Collignon C, Gana I, Benaboud S, Toubiana J, Castelle M, Oualha M, de Marcellus C. Pharmacokinetics of ceftolozane/tazobactam continuous infusion on renal replacement therapy: A pediatric case report. Therapie 2021; 77:616-620. [PMID: 34776252 DOI: 10.1016/j.therap.2021.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/27/2021] [Accepted: 10/14/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Charlotte Collignon
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, 149, rue de Sèvres, 75015 Paris, France
| | - Ines Gana
- Pharmacology and Drug Evaluation in Children and Pregnant Women EA7323, 75014 Paris, France
| | - Sihem Benaboud
- Pharmacology and Drug Evaluation in Children and Pregnant Women EA7323, 75014 Paris, France; Descartes University, Department of Clinical Pharmacology, Cochin Hospital, Paris-Descartes University, 75015 Paris, France; Université de Paris, 75006 Paris, France
| | - Julie Toubiana
- Department of Infectious Diseases and Tropical Medicine, APHP University Hospital Necker-Enfants Malades, 75015 Paris, France
| | - Martin Castelle
- Pediatric Hematology-Immunology and Rheumatology Unit, APHP University Hospital Necker-enfants malades, Paris, France
| | - Mehdi Oualha
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, 149, rue de Sèvres, 75015 Paris, France; Université de Paris, 75006 Paris, France
| | - Charles de Marcellus
- Pediatric Intensive Care Unit, APHP University Hospital Necker-Enfants Malades, 149, rue de Sèvres, 75015 Paris, France; Université de Paris, 75006 Paris, France.
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5
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Zhao M, Chen Y, Yang D, Lyu C, Bian X, Li X, Qiu W, Huang Z, Hu Z, Zhang J. Regulatory utility of pharmacometrics in the development and evaluation of antimicrobial agents and its recent progress in China. CPT-PHARMACOMETRICS & SYSTEMS PHARMACOLOGY 2021; 10:1466-1478. [PMID: 34651458 PMCID: PMC8674004 DOI: 10.1002/psp4.12716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 07/24/2021] [Accepted: 09/20/2021] [Indexed: 11/08/2022]
Abstract
Pharmacometrics is an emerging science that interprets drug, disease, and trial information in a mathematical fashion to inform and facilitate efficient drug development and/or regulatory decisions. Pharmacometrics study is increasingly adopted in the regulatory review of new antimicrobial agents. We summarized the 31 antimicrobial agents approved by the US Food and Drug Administration (FDA) and the 26 antimicrobial agents approved by European Medicines Agency (EMA) from January 2001 to May 2019. We also reviewed recent examples of utilizing pharmacometrics to support antimicrobial agent's registration in China, including modeling and simulation methods, effects of internal/external factors on pharmacokinetic (PK) parameters, safety and efficacy evaluation in terms of exposure-response analysis, refinement of the wording of product labeling and package leaflet, and possible postmarketing clinical trial. Ongoing communication among regulator, academia, and industry regarding pharmacometrics is encouraged to streamline and facilitate the development of new antimicrobial agents. The industry can maximize its benefit in drug development through continued pharmacometrics education/training.
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Affiliation(s)
- Ming Zhao
- Office of Clinical Evaluation II, Center for Drug Evaluation, National Medical Products Administration, Beijing, China
| | - Yuancheng Chen
- Phase I Unit, Huashan Hospital Affiliated to Fudan University, Shanghai, China
| | - Dong Yang
- Covance Pharmaceutical Research and Development (Beijing) Co., Ltd., Beijing, China
| | - Cheng Lyu
- Department of Translational Medicine, Clinical Development Business Unit, CSPC Zhongqi Pharmaceutical Technology (Shijiazhuang) Co., Ltd., Shanghai, China.,Institute of Antibiotics, Huashan Hospital Affiliated to Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Xingchen Bian
- Institute of Antibiotics, Huashan Hospital Affiliated to Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Xin Li
- Institute of Antibiotics, Huashan Hospital Affiliated to Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Weiyi Qiu
- Beijing Institute of Biotechnology, Beijing, China
| | - Zhiwei Huang
- Institute of Antibiotics, Huashan Hospital Affiliated to Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
| | - Zijian Hu
- Department of Translational Medicine, Clinical Development Business Unit, CSPC Zhongqi Pharmaceutical Technology (Shijiazhuang) Co., Ltd., Shanghai, China
| | - Jing Zhang
- Institute of Antibiotics, Huashan Hospital Affiliated to Fudan University, Shanghai, China.,Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Shanghai, China
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Shorr AF, Bruno CJ, Zhang Z, Jensen E, Gao W, Feng HP, Huntington JA, Yu B, Rhee EG, De Anda C, Basu S, Kollef MH. Ceftolozane/tazobactam probability of target attainment and outcomes in participants with augmented renal clearance from the randomized phase 3 ASPECT-NP trial. Crit Care 2021; 25:354. [PMID: 34600585 PMCID: PMC8487337 DOI: 10.1186/s13054-021-03773-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 09/16/2021] [Indexed: 11/11/2022] Open
Abstract
Background The randomized, double-blind, phase 3 ASPECT-NP trial evaluated the efficacy of 3 g of ceftolozane/tazobactam (C/T) versus 1 g of meropenem infused every 8 h for 8 to 14 days for treatment of adults with hospital-acquired bacterial pneumonia (HABP) or ventilator-associated bacterial pneumonia (VABP). We assessed the probability of target attainment and compared efficacy outcomes from ASPECT-NP in participants with augmented renal clearance (ARC) versus those with normal renal function. Methods Baseline renal function was categorized as normal renal function (creatinine clearance 80–130 mL/min) or ARC (creatinine clearance > 130 mL/min). Population pharmacokinetic models informed Monte Carlo simulations to assess probability of target attainment in plasma and pulmonary epithelial lining fluid. Outcomes included 28-day all-cause mortality and clinical cure and per-participant microbiologic cure rates at the test-of-cure visit. Results A > 99% and > 80% probability of target attainment was demonstrated for ceftolozane and tazobactam, respectively, in simulated plasma and epithelial lining fluid. Within treatment arms, 28-day all-cause mortality rates in participants with normal renal function (C/T, n = 131; meropenem, n = 123) and ARC (C/T, n = 96; meropenem, n = 113) were comparable (data comparisons presented as rate; treatment difference [95% CI]) (C/T: normal renal function, 17.6%; ARC, 17.7%; 0.2 [− 9.6 to 10.6]; meropenem: normal renal function, 20.3%; ARC, 17.7%; − 2.6 [− 12.6 to 7.5]). Clinical cure rates at test-of-cure were also comparable across renal function groups within treatment arms (C/T: normal renal function, 57.3%; ARC, 59.4%; − 2.1 [− 14.8 to 10.8]; meropenem: normal renal function, 59.3%; ARC, 57.5%; 1.8 [− 10.6 to 14.2]). Per-participant microbiologic cure rates at test-of-cure were consistent across renal function groups within treatment arms (C/T: normal renal function, 72.2% [n/N = 70/97]; ARC, 71.4% [n/N = 55/77]; 0.7 [− 12.4 to 14.2]; meropenem: normal renal function, 75.0% [n/N = 66/88]; ARC, 70.0% [n/N = 49/70]; 5.0 [− 8.7 to 19.0]). Conclusions C/T and meropenem resulted in 28-day all-cause mortality, clinical cure, and microbiologic cure rates that were comparable between participants with ARC or normal renal function. In conjunction with high probability of target attainment, these results confirm that C/T (3 g) every 8 h is appropriate in patients with HABP/VABP and ARC. Trial registration ClinicalTrials.gov identifier: NCT02070757, registered February 25, 2014; EudraCT: 2012-002862-11.
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Affiliation(s)
| | | | - Zufei Zhang
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Erin Jensen
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Wei Gao
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Hwa-Ping Feng
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | | | - Brian Yu
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Elizabeth G Rhee
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Carisa De Anda
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Sumit Basu
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ, 07033, USA
| | - Marin H Kollef
- Washington University School of Medicine, St. Louis, MO, USA
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Optimizing Antimicrobial Drug Dosing in Critically Ill Patients. Microorganisms 2021; 9:microorganisms9071401. [PMID: 34203510 PMCID: PMC8305961 DOI: 10.3390/microorganisms9071401] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/25/2021] [Accepted: 06/25/2021] [Indexed: 12/23/2022] Open
Abstract
A fundamental step in the successful management of sepsis and septic shock is early empiric antimicrobial therapy. However, for this to be effective, several decisions must be addressed simultaneously: (1) antimicrobial choices should be adequate, covering the most probable pathogens; (2) they should be administered in the appropriate dose, (3) by the correct route, and (4) using the correct mode of administration to achieve successful concentration at the infection site. In critically ill patients, antimicrobial dosing is a common challenge and a frequent source of errors, since these patients present deranged pharmacokinetics, namely increased volume of distribution and altered drug clearance, which either increased or decreased. Moreover, the clinical condition of these patients changes markedly over time, either improving or deteriorating. The consequent impact on drug pharmacokinetics further complicates the selection of correct drug schedules and dosing during the course of therapy. In recent years, the knowledge of pharmacokinetics and pharmacodynamics, drug dosing, therapeutic drug monitoring, and antimicrobial resistance in the critically ill patients has greatly improved, fostering strategies to optimize therapeutic efficacy and to reduce toxicity and adverse events. Nonetheless, delivering adequate and appropriate antimicrobial therapy is still a challenge, since pathogen resistance continues to rise, and new therapeutic agents remain scarce. We aim to review the available literature to assess the challenges, impact, and tools to optimize individualization of antimicrobial dosing to maximize exposure and effectiveness in critically ill patients.
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8
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Caro L, Nicolau DP, De Waele JJ, Kuti JL, Larson KB, Gadzicki E, Yu B, Zeng Z, Adedoyin A, Rhee EG. Lung penetration, bronchopulmonary pharmacokinetic/pharmacodynamic profile and safety of 3 g of ceftolozane/tazobactam administered to ventilated, critically ill patients with pneumonia. J Antimicrob Chemother 2021; 75:1546-1553. [PMID: 32211756 PMCID: PMC7225904 DOI: 10.1093/jac/dkaa049] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/15/2020] [Accepted: 01/24/2020] [Indexed: 02/06/2023] Open
Abstract
Objectives Ceftolozane/tazobactam is approved for hospital-acquired/ventilator-associated bacterial pneumonia at double the dose (i.e. 2 g/1 g) recommended for other indications. We evaluated the bronchopulmonary pharmacokinetic/pharmacodynamic profile of this 3 g ceftolozane/tazobactam regimen in ventilated pneumonia patients. Methods This was an open-label, multicentre, Phase 1 trial (clinicaltrials.gov: NCT02387372). Mechanically ventilated patients with proven/suspected pneumonia received four to six doses of 3 g of ceftolozane/tazobactam (adjusted for renal function) q8h. Serial plasma samples were collected after the first and last doses. One bronchoalveolar lavage sample per patient was collected at 1, 2, 4, 6 or 8 h after the last dose and epithelial lining fluid (ELF) drug concentrations were determined. Pharmacokinetic parameters were estimated by non-compartmental analysis and pharmacodynamic analyses were conducted to graphically evaluate achievement of target exposures (plasma and ELF ceftolozane concentrations >4 mg/L and tazobactam concentrations >1 mg/L; target in plasma: ≥30% and ≥20% of the dosing interval, respectively). Results Twenty-six patients received four to six doses of study drug; 22 were included in the ELF analyses. Ceftolozane and tazobactam Tmax (6 and 2 h, respectively) were delayed in ELF compared with plasma (1 h). Lung penetration, expressed as the ratio of mean drug exposure (AUC) in ELF to plasma, was 50% (ceftolozane) and 62% (tazobactam). Mean ceftolozane and tazobactam ELF concentrations remained >4 mg/L and >1 mg/L, respectively, for 100% of the dosing interval. There were no deaths or adverse event-related study discontinuations. Conclusions In ventilated pneumonia patients, 3 g of ceftolozane/tazobactam q8h yielded ELF exposures considered adequate to cover ceftolozane/tazobactam-susceptible respiratory pathogens.
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Affiliation(s)
| | - David P Nicolau
- Center for Anti-Infective Research and Development, Hartford Hospital, Hartford, CT, USA
| | - Jan J De Waele
- Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
| | - Joseph L Kuti
- Center for Anti-Infective Research and Development, Hartford Hospital, Hartford, CT, USA
| | | | | | - Brian Yu
- Merck & Co., Inc., Kenilworth, NJ, USA
| | - Zhen Zeng
- Merck & Co., Inc., Kenilworth, NJ, USA
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Kawaguchi N, Katsube T, Echols R, Wajima T. Population Pharmacokinetic and Pharmacokinetic/Pharmacodynamic Analyses of Cefiderocol, a Parenteral Siderophore Cephalosporin, in Patients with Pneumonia, Bloodstream Infection/Sepsis, or Complicated Urinary Tract Infection. Antimicrob Agents Chemother 2021; 65:e01437-20. [PMID: 33257454 PMCID: PMC8092503 DOI: 10.1128/aac.01437-20] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 11/19/2020] [Indexed: 12/13/2022] Open
Abstract
Cefiderocol is a novel siderophore cephalosporin with antibacterial activity against Gram-negative bacteria, including carbapenem-resistant strains. The standard dosing regimen of cefiderocol is 2 g administered every 8 hours over 3 hours infusion in patients with creatinine clearance (CrCL) of 60 to 119 ml/min, and it is adjusted for patients with <60 ml/min or ≥120 ml/min CrCL. A population pharmacokinetic (PK) model was constructed using 3,427 plasma concentrations from 91 uninfected subjects and 425 infected patients with pneumonia, bloodstream infection/sepsis (BSI/sepsis), and complicated urinary tract infection (cUTI). Plasma cefiderocol concentrations were adequately described by the population PK model, and CrCL was the most significant covariate. No other factors, including infection sites and mechanical ventilation, were clinically relevant, although the effect of infection sites was identified as a statistically significant covariate in the population PK analysis. No clear pharmacokinetic/pharmacodynamic relationship was found for any of the microbiological outcome, clinical outcome, or vital status. This is because the estimated percentage of time for which free plasma concentrations exceed the minimum inhibitory concentration (MIC) over dosing interval (%fT>MIC) was 100% in most of the enrolled patients. The probability of target attainment (PTA) for 100% fT>MIC was >90% against MICs of ≤4 μg/ml for all infection sites and renal function groups except for BSI/sepsis patients with normal renal function (85%). These study results support adequate plasma exposure can be achieved at the cefiderocol recommended dosing regimen for the infected patients, including the patients with augmented renal function, ventilation, and/or severe illness.
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Affiliation(s)
- Nao Kawaguchi
- Clinical Pharmacology & Pharmacokinetics, Shionogi & Co., Ltd., Osaka, Japan
| | - Takayuki Katsube
- Clinical Pharmacology & Pharmacokinetics, Shionogi & Co., Ltd., Osaka, Japan
| | - Roger Echols
- Infectious Disease Drug Development Consulting, LLC, Easton, Connecticut, USA
| | - Toshihiro Wajima
- Clinical Pharmacology & Pharmacokinetics, Shionogi & Co., Ltd., Osaka, Japan
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Putnam WC, Kallem RR, Edpuganti V, Subramaniyan I, Hall RG. Development and validation of a quantitative LC-MS/MS method for the simultaneous determination of ceftolozane and tazobactam in human plasma and urine. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122354. [PMID: 32905989 DOI: 10.1016/j.jchromb.2020.122354] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/24/2020] [Accepted: 08/28/2020] [Indexed: 11/30/2022]
Abstract
The purpose of this work was to develop and validate a single sensitive, selective and rapid bioanalytical method to determine ceftolozane and tazobactam concentrations in human plasma and urine and to use this method to analyze samples from a human clinical study. Human plasma and urine samples were prepared by protein precipitation using a solution of acetonitrile, water and formic acid. Following protein precipitation, samples were analyzed by liquid chromatography tandem mass spectrometry. Chromatographic resolution was achieved on a Kinetex PFP column using a gradient elution, a flow rate of 0.4 mL/min, and a total run time of 5 min. Positive electrospray ionization was employed and analytes were quantitated using multi-reaction monitoring mode. Method validation was conducted in accordance with Unites States Food and Drug Administration's regulatory guidelines for bioanalytical method validation. Calibration curves were determined to linear over the range of 0.1 to 40 µg/mL for ceftolozane and 0.05 to 20 µg/mL for tazobactam. The method was determined to be accurate (-6.24 to 12.53 percent relative error), precise (less than 13.28 percent standard deviation) and sensitive in both human plasma and urine. Ceftolozane and tazobactam were determined to be stable across a battery of stability studies including autosampler, benchtop, freeze/thaw and long-term stability. This validated method successfully applied to human clinical samples to determine the concentration versus time profiles of the intravenously administered combination of Zerbaxa (ceftolozane-tazobactam) in burn patients.
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Affiliation(s)
- William C Putnam
- Department of Pharmacy Practice, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Department of Pharmaceutical Science, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Clinical Pharmacology and Experimental Therapeutics Center, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States.
| | - Raja Reddy Kallem
- Department of Pharmacy Practice, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Clinical Pharmacology and Experimental Therapeutics Center, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States
| | - Vindhya Edpuganti
- Department of Pharmacy Practice, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Clinical Pharmacology and Experimental Therapeutics Center, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States
| | - Indhu Subramaniyan
- Department of Pharmacy Practice, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Clinical Pharmacology and Experimental Therapeutics Center, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States
| | - Ronald G Hall
- Department of Pharmacy Practice, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Clinical Pharmacology and Experimental Therapeutics Center, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX 75235, United States; Dose Optimization and Outcome Research Program, Dallas, TX 75235, United States
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Parker SL, Pandey S, Sime FB, Stuart J, Lipman J, Roberts JA, Wallis SC. A validated LC-MS/MS method for the simultaneous quantification of the novel combination antibiotic, ceftolozane-tazobactam, in plasma (total and unbound), CSF, urine and renal replacement therapy effluent: application to pilot pharmacokinetic studies. Clin Chem Lab Med 2020; 59:921-933. [PMID: 33554515 DOI: 10.1515/cclm-2020-1196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 11/02/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Novel treatment options for some carbapenem-resistant Gram-negative pathogens have been identified by the World Health Organization as being of the highest priority. Ceftolozane-tazobactam is a novel cephalosporin-beta-lactamase inhibitor combination antibiotic with potent bactericidal activity against the most difficult-to-treat multi-drug resistant and extensively drug resistant Gram-negative pathogens. This study aimed to develop and validate a liquid chromatography - tandem mass spectrometry method for the simultaneous quantification of ceftolozane and tazobactam in plasma (total and unbound), renal replacement therapy effluent (RRTE), cerebrospinal fluid (CSF) and urine. METHODS Analytes were separated using mixed-mode chromatography with an intrinsically base-deactivated C18 column and a gradient mobile phase consisting of 0.1% formic acid, 10 mM ammonium formate and acetonitrile. The analytes and internal standards were detected using rapid ionisation switching between positive and negative modes with simultaneous selected reaction monitoring. RESULTS A quadratic calibration was obtained for plasma (total and unbound), RRTE and CSF over the concentration range of 1-200 mg/L for ceftolozane and 0.5-100 mg/L for tazobactam, and for urine the concentration range of 10-2,000 mg/L for ceftolozane and 5-1,000 mg/L for tazobactam. For both ceftolozane and tazobactam, validation testing for matrix effects, precision and accuracy, specificity and stability were all within the acceptance criteria of ±15%. CONCLUSIONS This methodology was successfully applied to one pilot pharmacokinetic study in infected critically ill patients, including patients receiving renal replacement therapy, and one case study of a patient with ventriculitis, where all patients received ceftolozane-tazobactam.
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Affiliation(s)
- Suzanne L Parker
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Saurabh Pandey
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Fekade B Sime
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, Australia
| | - Janine Stuart
- Department of Intensive Care Medicine, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Jeffrey Lipman
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Department of Intensive Care Medicine, Royal Brisbane and Women's Hospital, Brisbane, Australia
- Division of Anaesthesiology Critical Care Emergency and Pain Medicine, Nîmes University Hospital, University of Montpellier, Nîmes, France
| | - Jason A Roberts
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, Australia
- Department of Intensive Care Medicine, Royal Brisbane and Women's Hospital, Brisbane, Australia
- Division of Anaesthesiology Critical Care Emergency and Pain Medicine, Nîmes University Hospital, University of Montpellier, Nîmes, France
- Department of Pharmacy, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Steven C Wallis
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
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Outcomes in Participants with Renal Impairment from a Phase 3 Clinical Trial for Ceftolozane/Tazobactam Treatment of Nosocomial Pneumonia (ASPECT-NP). Antimicrob Agents Chemother 2020; 64:AAC.00731-20. [PMID: 32988827 DOI: 10.1128/aac.00731-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/09/2020] [Indexed: 01/05/2023] Open
Abstract
In the phase 3 ASPECT-NP trial (NCT02070757), ceftolozane/tazobactam (C/T) was noninferior to meropenem for treatment of Gram-negative ventilated hospital-acquired bacterial pneumonia and ventilator-associated bacterial pneumonia (vHABP/VABP). Here, we report outcomes in participants from ASPECT-NP with renal impairment (RI). Participants were categorized by their baseline renal function as follows: normal renal function (NRF; creatinine clearance [CLCR], ≥80 ml/min), mild RI (CLCR, >50 to <80 ml/min), moderate RI (CLCR, ≥30 to ≤50 ml/min), and severe RI (CLCR, ≥15 to <30 ml/min). Dosing of both study drugs was adjusted based on renal function. The following C/T doses were administered every 8 h: NRF or mild RI, 3 g; moderate RI, 1.5 g; and severe RI, 0.75 g. The primary and key secondary endpoints were day 28 all-cause mortality (ACM) and clinical response at the test-of-cure visit in the intention-to-treat (ITT) population, respectively. In the ITT population, day 28 ACM rates for the C/T arm versus the meropenem arm were 17.6% versus 19.1% (NRF), 36.6% versus 28.6% (mild RI), 31.4% versus 38.5% (moderate RI), and 35.3% versus 61.9% (severe RI). Rates of clinical cure in the ITT population for the C/T arm versus the meropenem arm were 58.1% versus 58.5% (NRF), 54.9% versus 45.5% (mild RI), 37.1% versus 42.3% (moderate RI), and 41.2% versus 47.6% (severe RI). Small sample sizes in the RI groups resulted in large 95% confidence intervals (CIs), limiting conclusive interpretation of the analysis. Both drugs were well tolerated across all renal function groups. Overall, these results support the use of the study dosing regimens of C/T for treatment of vHABP/VABP in patients with RI. (This study has been registered at ClinicalTrials.gov under identifier NCT02070757.).
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Zhang Z, Patel YT, Fiedler‐Kelly J, Feng H, Bruno CJ, Gao W. Population Pharmacokinetic Analysis for Plasma and Epithelial Lining Fluid Ceftolozane/Tazobactam Concentrations in Patients With Ventilated Nosocomial Pneumonia. J Clin Pharmacol 2020; 61:254-268. [PMID: 32949031 PMCID: PMC7821292 DOI: 10.1002/jcph.1733] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/07/2020] [Indexed: 12/11/2022]
Abstract
Ceftolozane/tazobactam (C/T) is a combination of a novel cephalosporin with tazobactam, recently approved for the treatment of hospital-acquired and ventilator-associated pneumonia. The plasma pharmacokinetics (PK) of a 3-g dose of C/T (2 g ceftolozane and 1 g tazobactam) administered via a 1-hour infusion every 8 hours in adult patients with nosocomial pneumonia (NP) were evaluated in a phase 3 study (ASPECT-NP; NCT02070757). The present work describes the development of population PK models for ceftolozane and tazobactam in plasma and pulmonary epithelial lining fluid (ELF). The concentration-time profiles of both agents were well characterized by 2-compartment models with zero-order input and first-order elimination. Consistent with the elimination pathway, renal function estimated by creatinine clearance significantly affected the clearance of ceftolozane and tazobactam. The central volumes of distribution for both agents and the peripheral volume of distribution for tazobactam were approximately 2-fold higher in patients with pneumonia compared with healthy participants. A hypothetical link model was developed to describe ceftolozane and tazobactam disposition in ELF in healthy participants and patients with pneumonia. Influx (from plasma to the ELF compartment) and elimination (from the ELF compartment) rate constants were approximately 97% lower for ceftolozane and 52% lower for tazobactam in patients with pneumonia versus healthy participants. These population PK models adequately described the plasma and ELF concentrations of ceftolozane and tazobactam, thus providing a foundation for further modeling and simulation, including the probability of target attainment assessments to support dose recommendations of C/T in adult patients with NP.
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Affiliation(s)
| | - Yogesh T. Patel
- Cognigen Corporationa Simulations Plus CompanyBuffaloNew YorkUSA
| | | | | | | | - Wei Gao
- Merck & Co. Inc.KenilworthNew JerseyUSA
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14
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Martin-Loeches I, Bisanti A, Diaz E, Rodriguez A. Ceftolozane and tazobactam for the treatment of hospital acquired pneumonia. Expert Rev Anti Infect Ther 2020; 18:1177-1185. [PMID: 32662691 DOI: 10.1080/14787210.2020.1794816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Patients admitted to hospitals are at risk of developing nosocomial infections. These types of infections typically occur in immune-compromised patients. Furthermore, nosocomial infections are frequently caused by resistant organisms, including nonfermenting gram-negative bacilli such as Pseudomonas aeruginosa. AREAS COVERED P. aeruginosa is a hazardous pathogen. It can resist numerous antibiotics, due to several resistance mechanisms. It is associated with serious illnesses, particularly hospital-acquired infections including ventilator-associated pneumonia. In the past, only a limited number of anti-pseudomonal drugs were available. However, several therapeutic advancements have been made, in recent years, to target P. aeruginosa, including the development of the new cephalosporin: ceftolozane-tazobactam. EXPERT OPINION Ceftolozane-tazobactam is a combination of a novel semi-synthetic fifth-generation cephalosporin with a well-established beta-lactamase inhibitor. From a structural perspective, ceftolozane-tazobactam has attested increased stability to AmpC β-lactamases. Additionally, ceftolozane-tazobactam is less affected by changes in efflux pumps and porin permeability due to an enhanced affinity to certain penicillin-binding proteins (PBPs). This enables the molecule to overcome the most common anti-drug resistant mechanisms of bacteria. According to previous clinical trials conducted, ceftolozane-tazobactam must be considered when treating patients with confirmed or suspected P. aeruginosa respiratory tract infections, either nosocomial pneumonia or ventilator-associated pneumonia.
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Affiliation(s)
- Ignacio Martin-Loeches
- Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO) and Department of Clinical Medicine, Trinity College, Wellcome Trust-HRB Clinical Research Facility , Dublin, Ireland.,Hospital de Barcelona, IDIBAPS, CIBERes , Barcelona, Spain
| | - Alessandra Bisanti
- Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO) and Department of Clinical Medicine, Trinity College, Wellcome Trust-HRB Clinical Research Facility , Dublin, Ireland
| | - Emili Diaz
- Department of Intensive Care Medicine, Corporacio Sanitaria Parc Tauli , Sabadell, Spain
| | - Alejandro Rodriguez
- Department of Intensive Care Medicine, Hospital Joan XXIII , Tarragona, Spain
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15
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Mané C, Delmas C, Porterie J, Jourdan G, Verwaerde P, Marcheix B, Concordet D, Georges B, Ruiz S, Gandia P. Influence of extracorporeal membrane oxygenation on the pharmacokinetics of ceftolozane/tazobactam: an ex vivo and in vivo study. J Transl Med 2020; 18:213. [PMID: 32460856 PMCID: PMC7251674 DOI: 10.1186/s12967-020-02381-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/16/2020] [Indexed: 02/07/2023] Open
Abstract
Background Extracorporeal membrane oxygenation (ECMO) is increasingly used in intensive care units and can modify drug pharmacokinetics and lead to under-exposure associated with treatment failure. Ceftolozane/tazobactam is an antibiotic combination used for complicated infections in critically ill patients. Launched in 2015, sparse data are available on the influence of ECMO on the pharmacokinetics of ceftolozane/tazobactam. The aim of the present study was to determine the influence of ECMO on the pharmacokinetics of ceftolozane-tazobactam. Methods An ex vivo model (closed-loop ECMO circuits primed with human whole blood) was used to study adsorption during 8-h inter-dose intervals over a 24-h period (for all three ceftolozane/tazobactam injections) with eight samples per inter-dose interval. Two different dosages of ceftolozane/tazobactam injection were studied and a control (whole blood spiked with ceftolozane/tazobactam in a glass tube) was performed. An in vivo porcine model was developed with a 1-h infusion of ceftolozane–tazobactam and concentration monitoring for 11 h. Pigs undergoing ECMO were compared with a control group. Pharmacokinetic analysis of in vivo data (non-compartmental analysis and non-linear mixed effects modelling) was performed to determine the influence of ECMO. Results With the ex vivo model, variations in concentration ranged from − 5.73 to 1.26% and from − 12.95 to − 2.89% respectively for ceftolozane (concentrations ranging from 20 to 180 mg/l) and tazobactam (concentrations ranging from 10 to 75 mg/l) after 8 h. In vivo pharmacokinetic exploration showed that ECMO induces a significant decrease of 37% for tazobactam clearance without significant modification in the pharmacokinetics of ceftolozane, probably due to a small cohort size. Conclusions Considering that the influence of ECMO on the pharmacokinetics of ceftolozane/tazobactam is not clinically significant, normal ceftolozane and tazobactam dosing in critically ill patients should be effective for patients undergoing ECMO.
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Affiliation(s)
- Camille Mané
- Pharmacokinetics and Toxicology Laboratory, Toulouse University Hospital, Toulouse, France.,INTHERES, INRAE, ENVT, Université de Toulouse, Toulouse, France
| | - Clément Delmas
- Intensive Cardiac Care Unit, Rangueil University Hospital, Toulouse, France.,Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR-1048, National Institute of Health and Medical Research (INSERM), Toulouse, France
| | - Jean Porterie
- Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR-1048, National Institute of Health and Medical Research (INSERM), Toulouse, France.,Cardiovascular Surgery Unit, Rangueil University Hospital, Toulouse, France
| | - Géraldine Jourdan
- Critical and Intensive Care Unit, Stomalab UMR 5273 CNRS/UPS-EFS-ENVT-INSERM U1031, Toulouse School of Veterinary Medicine, Toulouse, France
| | - Patrick Verwaerde
- Anesthesia-Emergency-Intensive Care Department, UPEC/IMRB-Inserm U955, Alfort School of Veterinary Medicine, Maisons-Alfort, France
| | - Bertrand Marcheix
- Cardiovascular Surgery Unit, Rangueil University Hospital, Toulouse, France
| | | | - Bernard Georges
- Anesthesia-General Intensive Care Division, Rangueil General Intensive Care Department, Toulouse University Hospital, Toulouse, France
| | - Stéphanie Ruiz
- Anesthesia-General Intensive Care Division, Rangueil General Intensive Care Department, Toulouse University Hospital, Toulouse, France
| | - Peggy Gandia
- Pharmacokinetics and Toxicology Laboratory, Toulouse University Hospital, Toulouse, France. .,INTHERES, INRAE, ENVT, Université de Toulouse, Toulouse, France.
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16
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Martens-Lobenhoffer J, Hinderhofer M, Tröger U, Bode-Böger SM. Stability of ceftolozane in human plasma and dried blood spots: Implications for transport and storage. J Pharmacol Toxicol Methods 2020; 103:106692. [DOI: 10.1016/j.vascn.2020.106692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/03/2020] [Accepted: 03/09/2020] [Indexed: 01/15/2023]
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17
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Grabein B, Ebenhoch M, Kühnen E, Thalhammer F. Calculated parenteral initial treatment of bacterial infections: Infections with multi-resistant Gram-negative rods - ESBL producers, carbapenemase-producing Enterobacteriaceae, carbapenem-resistant Acinetobacter baumannii. GMS INFECTIOUS DISEASES 2020; 8:Doc04. [PMID: 32373429 PMCID: PMC7186793 DOI: 10.3205/id000048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This is the sixteenth chapter of the guideline "Calculated initial parenteral treatment of bacterial infections in adults - update 2018" in the 2nd updated version. The German guideline by the Paul-Ehrlich-Gesellschaft für Chemotherapie e.V. (PEG) has been translated to address an international audience. Infections due to multiresistant Gram-negative rods are challenging. In this chapter recommendations for targeted therapy for infections caused by ESBL-producing Enterobacteriaceae, carbapenemase-producing Enterobacteriaceae and carbapenem-resistant Acinetobacter baumannii are given, based on the limited available evidence.
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Affiliation(s)
- Béatrice Grabein
- Stabsstelle Klinische Mikrobiologie und Krankenhaushygiene, Klinikum der Universität München, Munich, Germany
| | - Michael Ebenhoch
- Stabsstelle Hygiene, Klinische Infektiologie und Mikrobiologie, BG-Unfallklinik Murnau, Germany
| | - Ernst Kühnen
- Mikrobiologie & Hygiene, MVZ Synlab Trier, Germany
| | - Florian Thalhammer
- Klinische Abteilung für Infektiologie und Tropenmedizin, Medizinische Universität Wien, Vienna, Austria
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18
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Shahrami B, Najmeddin F, Rouini MR, Najafi A, Sadeghi K, Amini S, Khezrnia SS, Sharifnia HR, Mojtahedzadeh M. Evaluation of Amikacin Pharmacokinetics in Critically Ill Patients with Intra-abdominal Sepsis. Adv Pharm Bull 2019; 10:114-118. [PMID: 32002369 PMCID: PMC6983982 DOI: 10.15171/apb.2020.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/07/2019] [Accepted: 09/18/2019] [Indexed: 12/23/2022] Open
Abstract
Purpose: Although the current widespread use of amikacin is in intra-abdominal sepsis treatment, its pharmacokinetic changes in the present setting are not yet well known. This study was aimed to evaluate the amikacin pharmacokinetic profile in critically ill patients with intraabdominal sepsis compared to pneumosepsis.
Methods: Adult septic patients received amikacin therapy were studied. Patients with intraabdominal sepsis were enrolled in group 1 (n=16), and patients with pneumosepsis were enrolled in group 2 (n=13). The amikacin serum concentrations were evaluated in the first, second, fourth and sixth hours after initiating 30-minute infusion. The pharmacokinetic parameters were calculated for each patient.
Results: There was no significant difference in the volume of distribution between the two groups (0.33±0.08 vs. 0.28±0.10 L/kg, P=0.193). The amikacin clearance was significantly lower in group 1 compared to group 2 (58.5±21.7 vs. 83.9±37.0 mL/min, P=0.029). There was no significant correlation between amikacin clearance and creatinine clearance estimated by Cockcroft-Gault formula in all patients (P=0.206). The half-life was significantly longer in group 1 compared to group 2 (5.3±2.8 vs. 3.4±3.2 hours, P=0.015).
Conclusion: Pathophysiologic changes following intra-abdominal sepsis can affect amikacin pharmacokinetics behavior. The clearance and half-life may change, but the alteration of the volume of distribution is not significantly different in comparison with pneumosepsis. Further studies are required to evaluate the pharmacokinetic variables of amikacin in critically ill patients with intra-abdominal sepsis.
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Affiliation(s)
- Bita Shahrami
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Farhad Najmeddin
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Rouini
- Department of Pharmaceutics, Tehran University of Medical Sciences, Tehran, Iran
| | - Atabak Najafi
- Department of Anesthesiology and Critical Care, Tehran University of Medical Sciences, Tehran, Iran
| | - Kourosh Sadeghi
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahideh Amini
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Hamid Reza Sharifnia
- Department of Anesthesiology and Critical Care, Tehran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Mojtahedzadeh
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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19
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Population Pharmacokinetics of Cis-, Trans-, and Total Cefprozil in Healthy Male Koreans. Pharmaceutics 2019; 11:pharmaceutics11100531. [PMID: 31614996 PMCID: PMC6836086 DOI: 10.3390/pharmaceutics11100531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/23/2019] [Accepted: 10/12/2019] [Indexed: 12/03/2022] Open
Abstract
Cefprozil, one of cephalosporin antibiotics, has been used extensively in clinics. However, pharmacokinetic (PK) information on cefprozil is still very limited. There have been no reports of population pharmacokinetics (PPKs). A PPK model for cefprozil will be a great advantage for clinical use. Thus, the aim of this study was to develop a PPK model for cefprozil for healthy male Koreans. Clinical PK and demographic data of healthy Korean males receiving cefprozil at a dose of 1000 mg were analyzed using Phoenix® NLME™. A one-compartment model with first-order absorption with lag-time was constructed as a base model. The model was extended to include covariates that influenced between-subject variability. Creatinine clearance significantly influenced systemic clearance of cefprozil. The final PPK model for cis-, trans-, and total cefprozil was established and validated. PPK parameter values of cis- and total cefprozil were similar to each other, but different from those of trans-isomer. Herein, we describe the establishment of accurate PPK models of cis-, trans-, and total cefprozil for healthy male Koreans for the first time. It may be useful as a dosing algorithm for the general population. These results might also contribute to the development of stereoisomeric cefprozil.
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Antibiotics in the Pipeline for Treatment of Infections due to Gram-Negative Organisms. CURRENT TREATMENT OPTIONS IN INFECTIOUS DISEASES 2019. [DOI: 10.1007/s40506-019-00187-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Ceftolozane-Tazobactam Population Pharmacokinetics and Dose Selection for Further Clinical Evaluation in Pediatric Patients with Complicated Urinary Tract or Complicated Intra-abdominal Infections. Antimicrob Agents Chemother 2019; 63:AAC.02578-18. [PMID: 30962340 DOI: 10.1128/aac.02578-18] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/01/2019] [Indexed: 02/06/2023] Open
Abstract
Ceftolozane-tazobactam, a combination of the novel antipseudomonal cephalosporin ceftolozane and the well-established extended-spectrum β-lactamase inhibitor tazobactam, is approved for treating complicated urinary tract infections (cUTI) and complicated intra-abdominal infections (cIAI) in adults. To determine doses likely to be safe and efficacious in phase 2 pediatric trials for the same indications, single-dose ceftolozane-tazobactam plasma pharmacokinetic data from a recently completed phase 1 trial in pediatric patients (birth to <18 years old) with proven/suspected Gram-negative bacterial infections, along with pharmacokinetic data from 12 adult studies, were integrated into a population pharmacokinetic (popPK) analysis. Two-compartment linear models with first-order elimination described the concentration-time profiles of ceftolozane and tazobactam in pediatric patients well. Renal function and body weight were identified to be significant predictors of ceftolozane-tazobactam pharmacokinetics. Renal function, as measured by the estimated glomerular filtration rate (eGFR), significantly affected the clearance of both ceftolozane and tazobactam. Body weight significantly affected clearance and the distribution volume, also of both ceftolozane and tazobactam. Patients with infections had a 32.3% lower tazobactam clearance than healthy volunteers. Using the final popPK models, simulations of various dosing regimens were conducted to assess each regimen's plasma exposure and the probability of pharmacokinetic/pharmacodynamic target attainment. Based on these simulations, the following doses are recommended for further clinical evaluation in phase 2 pediatric trials for cUTI and cIAI (in patients with an eGFR of ≥50 ml/min/1.73 m2 only): for children ≥12 years old, 1.5 g ceftolozane-tazobactam (1 g ceftolozane with 0.5 g tazobactam), and for neonates/very young infants, infants, and children <12 years old, 20/10 mg/kg of body weight ceftolozane-tazobactam, both via a 1-h intravenous infusion every 8 h.
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22
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Ceftolozane-Tazobactam Pharmacokinetics during Extracorporeal Membrane Oxygenation in a Lung Transplant Recipient. Antimicrob Agents Chemother 2019; 63:AAC.02131-18. [PMID: 30642936 DOI: 10.1128/aac.02131-18] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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23
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Kakara M, Larson K, Feng HP, Shiomi M, Yoshitsugu H, Rizk ML. Population pharmacokinetics of tazobactam/ceftolozane in Japanese patients with complicated urinary tract infection and complicated intra-abdominal infection. J Infect Chemother 2018; 25:182-191. [PMID: 30528208 DOI: 10.1016/j.jiac.2018.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 11/02/2018] [Accepted: 11/07/2018] [Indexed: 10/27/2022]
Abstract
Tazobactam/ceftolozane is a combination of a β-lactamase inhibitor and a cephalosporin antibiotic, with recommended dosage for patients with normal renal function of tazobactam 0.5 g/ceftolozane 1 g administered as a 1-h intravenous infusion every 8 h. The doses in patients with moderate and severe renal impairment are recommended to be reduced by half and 1/4th, respectively. The dose in patients undergoing dialysis is a single loading dose of 750 mg followed after 8 h by a 150 mg maintenance dose. In order to evaluate pharmacokinetics (PK) in Japanese patients, individual Bayes PK parameters were derived using the previously developed population PK models. Furthermore, attainment of PK/pharmacodynamic target in Japanese patients was calculated to confirm the recommended dosage. Based on PK data from 200 Japanese patients in the phase 3 studies, including patients with mild and moderate renal impairment, individual tazobactam/ceftolozane PK parameters were derived. No clinically relevant difference was observed in tazobactam/ceftolozane exposures between Japanese and non-Japanese patients. All Japanese patients achieved a target percent of time that free ceftolozane concentrations are above the minimum inhibitory concentration (MIC) of 30% for MICs of up to 8 μg/mL. Also for tazobactam, all Japanese patients achieved a target percent of time that the free tazobactam concentration exceeds a threshold concentration (1 μg/mL) of 20%. The results suggest that the doses will be efficacious in the Japanese population. The results indicate that the recommended dose in patients with normal renal function or renal impairment is appropriate in Japanese patients.
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Affiliation(s)
- Makoto Kakara
- Clinical Pharmacokinetics & Pharmacometrics Group, Clinical Pharmacology Development, Clinical Research Area, Japan Development, MSD K.K., Tokyo, Japan.
| | - Kajal Larson
- Department of Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co., Inc., Kenilworth, NJ, USA
| | - Hwa-Ping Feng
- Department of Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co., Inc., Kenilworth, NJ, USA
| | - Mari Shiomi
- Clinical Pharmacokinetics & Pharmacometrics Group, Clinical Pharmacology Development, Clinical Research Area, Japan Development, MSD K.K., Tokyo, Japan
| | - Hiroyuki Yoshitsugu
- Clinical Pharmacokinetics & Pharmacometrics Group, Clinical Pharmacology Development, Clinical Research Area, Japan Development, MSD K.K., Tokyo, Japan
| | - Matthew L Rizk
- Department of Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co., Inc., Kenilworth, NJ, USA
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Bassetti M, Castaldo N, Cattelan A, Mussini C, Righi E, Tascini C, Menichetti F, Mastroianni CM, Tumbarello M, Grossi P, Artioli S, Carannante N, Cipriani L, Coletto D, Russo A, Digaetano M, Losito AR, Peghin M, Capone A, Nicolè S, Vena A. Ceftolozane/tazobactam for the treatment of serious Pseudomonas aeruginosa infections: a multicentre nationwide clinical experience. Int J Antimicrob Agents 2018; 53:408-415. [PMID: 30415002 DOI: 10.1016/j.ijantimicag.2018.11.001] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 10/04/2018] [Accepted: 11/04/2018] [Indexed: 02/02/2023]
Abstract
This study describes the largest clinical experience using ceftolozane/tazobactam (C/T) for different Pseudomonas aeruginosa infections. A retrospective study was performed at 22 hospitals in Italy (June 2016-March 2018). All adult patients treated with ≥4 days of C/T were enrolled. Successful clinical outcome was defined as complete resolution of clinical signs/symptoms related to P. aeruginosa infection and lack of microbiological evidence of infection. C/T treatment was documented in 101 patients with diverse infections, including nosocomial pneumonia (31.7%), acute bacterial skin and skin-structure infection (20.8%), complicated UTI (13.9%), complicated IAI (12.9%), bone infection (8.9%) and primary bacteraemia (5.9%). Over one-half of P. aeruginosa strains were XDR (50.5%), with 78.2% of isolates resistant to at least one carbapenem. C/T was used as first-line therapy in 39 patients (38.6%). When used as second-line or later, the most common reasons for discontinuation of previous antibiotics were in vitro resistance of P. aeruginosa and clinical failure of previous therapy. Concomitant antibiotics were reported in 35.6% of patients. C/T doses were 1.5 g q8h in 70 patients (69.3%) and 3 g q8h in 31 patients (30.7%); median duration of C/T therapy was 14 days. Overall clinical success was 83.2%. Significant lower success rates were observed in patients with sepsis or receiving continuous renal replacement therapy (CRRT). Mild adverse events were reported in only three patients. C/T demonstrated a favourable safety and tolerability profile regardless of the infection type. Clinicians should be aware of the risk of clinical failure with C/T therapy in septic patients receiving CRRT.
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MESH Headings
- Aged
- Anti-Bacterial Agents/therapeutic use
- Bacteremia/drug therapy
- Bacteremia/microbiology
- Bone Diseases, Infectious/drug therapy
- Bone Diseases, Infectious/microbiology
- Cephalosporins/adverse effects
- Cephalosporins/therapeutic use
- Drug Resistance, Multiple, Bacterial/genetics
- Female
- Humans
- Male
- Middle Aged
- Pneumonia, Bacterial/drug therapy
- Pneumonia, Bacterial/microbiology
- Pneumonia, Ventilator-Associated/drug therapy
- Pneumonia, Ventilator-Associated/microbiology
- Pseudomonas Infections/drug therapy
- Pseudomonas Infections/microbiology
- Pseudomonas aeruginosa/drug effects
- Pseudomonas aeruginosa/genetics
- Pseudomonas aeruginosa/isolation & purification
- Retrospective Studies
- Skin Diseases, Bacterial/drug therapy
- Skin Diseases, Bacterial/microbiology
- Tazobactam/adverse effects
- Tazobactam/therapeutic use
- Treatment Outcome
- Urinary Tract Infections/drug therapy
- Urinary Tract Infections/microbiology
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Affiliation(s)
- Matteo Bassetti
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata, Udine, Italy.
| | - Nadia Castaldo
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata, Udine, Italy
| | - Annamaria Cattelan
- Infectious Diseases Unit, Department of Internal Medicine, Azienda Ospedaliera-Universitaria di Padova, Padua, Italy
| | - Cristina Mussini
- Infectious Diseases Clinic, University of Modena and Reggio Emilia, Modena, Italy
| | - Elda Righi
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata, Udine, Italy
| | - Carlo Tascini
- First Division of Infectious Diseases, Cotugno Hospital, AORN dei Colli, Naples, Italy
| | - Francesco Menichetti
- Infectious Diseases Clinic, Nuovo Santa Chiara University Hospital, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | | | - Mario Tumbarello
- UOC Malattie Infettive, Fondazione Policlinico Universitario A. Gemelli IRCCS - Istituto Malattie Infettive, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Paolo Grossi
- Department of Infectious and Tropical Diseases, University of Insubria, Ospedale di Circolo-Fondazioni Macchi, Varese, Italy
| | - Stefania Artioli
- Infectious Diseases and Hepatology Unit, Sant'Andrea Hospital La Spezia, La Spezia, Italy
| | - Novella Carannante
- First Division of Infectious Diseases, Cotugno Hospital, AORN dei Colli, Naples, Italy
| | - Ludovica Cipriani
- Infectious Diseases Unit, Department of Internal Medicine, Azienda Ospedaliera-Universitaria di Padova, Padua, Italy
| | - Davide Coletto
- Infectious Diseases Unit, Department of Internal Medicine, Azienda Ospedaliera-Universitaria di Padova, Padua, Italy
| | - Alessandro Russo
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata, Udine, Italy
| | - Margherita Digaetano
- Infectious Diseases Clinic, University of Modena and Reggio Emilia, Modena, Italy
| | - Angela Raffaella Losito
- UOC Malattie Infettive, Fondazione Policlinico Universitario A. Gemelli IRCCS - Istituto Malattie Infettive, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Maddalena Peghin
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata, Udine, Italy
| | - Alessandro Capone
- National Institute for Infectious Diseases 'Lazzaro Spallanzani' IRCCS, Rome, Italy
| | - Stefano Nicolè
- Infectious Diseases Unit, Department of Internal Medicine, Azienda Ospedaliera-Universitaria di Padova, Padua, Italy
| | - Antonio Vena
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata, Udine, Italy; Medicine Department, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.
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Pharmacokinetics and Safety of Single Intravenous Doses of Ceftolozane/Tazobactam in Children With Proven or Suspected Gram-Negative Infection. Pediatr Infect Dis J 2018; 37:1130-1136. [PMID: 30153232 DOI: 10.1097/inf.0000000000002170] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Drug-resistant Gram-negative bacteria are a growing threat to children; thus new antibiotics are needed to treat infections caused by these pathogens. Ceftolozane/tazobactam is active against many Gram-negative pathogens and is approved for treatment of complicated intra-abdominal and urinary tract infections in adults, but has not been evaluated in children. METHODS This phase 1, noncomparative, open-label, multicenter study characterized the pharmacokinetics (by noncompartmental analysis), safety, and tolerability of single intravenous doses of ceftolozane/tazobactam in pediatric patients (birth [7 days postnatal] to < 18 years of age) with proven/suspected Gram-negative infection or receiving perioperative prophylaxis (clinicaltrials.gov NCT02266706). Patients were enrolled into 1 of 6 age groups to receive a single, age-based ceftolozane/tazobactam dose, with timed blood sample collection for determining plasma concentrations of ceftolozane and tazobactam. Safety and tolerability were also evaluated. RESULTS Thirty-seven patients received study drug; 34 were included in the pharmacokinetic population. Ceftolozane and tazobactam pharmacokinetic parameters were generally comparable for patients 3 months to < 18 years of age. Patients from birth (7 days postnatal) to < 3 months of age had lower clearance than older children, likely due to the immature renal function of these young infants. No deaths, study drug-related serious adverse events, or clinically significant laboratory abnormalities were observed after administration of ceftolozane/tazobactam. CONCLUSIONS The doses evaluated in this study yielded ceftolozane/tazobactam exposure levels generally comparable with those in adults. Single doses of ceftolozane/tazobactam were well-tolerated, and no safety concerns were identified. These data informed pharmacokinetic/pharmacodynamic models to derive pediatric dose recommendations for phase 2 ceftolozane/tazobactam clinical trials.
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Rigo-Bonnin R, Gomez-Junyent J, García-Tejada L, Benavent E, Soldevila L, Tubau F, Murillo O. Measurement of ceftolozane and tazobactam concentrations in plasma by UHPLC-MS/MS. Clinical application in the management of difficult-to-treat osteoarticular infections. Clin Chim Acta 2018; 488:50-60. [PMID: 30385280 DOI: 10.1016/j.cca.2018.10.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 10/11/2018] [Accepted: 10/28/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Ceftolozane, in combination with the β-lactamase inhibitor tazobactam, is a new option in the pipeline against multidrug-resistant Gram-negative bacilli. As for other β-lactam antibiotics, optimizing the use of ceftolozane-tazobactam is advisable, especially in difficult-to-treat infections. In this regard, therapeutic drug monitoring would be required to guide the treatment of ceftolozane-tazobactam. Thus, we aimed to develop and validate procedures based on UHPLC-MS/MS for measurement of ceftolozane and tazobactam plasma concentrations in clinical practice. MATERIAL AND METHODS Analyses were conducted using an Acquity® UPLC® integrated system coupled to an Acquity® TQD® tandem-quadrupole mass spectrometer. Ceftolozane, tazobactam and their internal standards (ceftazidime-D5 and sulbactam) were detected by electrospray ionization mass spectrometry in positive and negative ion multiple reaction monitoring modes, using transitions of 667.2 → 199.3/139.0 and 551.9 → 467.9 for ceftolozane and ceftazidime-D5, and 299.0 → 138/254.9 and 232.0 → 140.0 for tazobactam and sulbactam. Measurement procedures developed were used for guiding the treatment and adjusting daily dose of ceftolozane-tazobactam in patients with osteoarticular infections. RESULTS Coefficients of variation and absolute relative biases were <7.9% and 6.5% in all cases. The lower limit of quantification, linearity, normalized-recoveries, normalized-matrix effects and measurement uncertainties for ceftolozane were: 0.97 mg/L, (0.97-125) mg/L, ≤113.6%, ≤108.7%, and ≤ 18.7%, respectively; and for tazobactam: 1.04 mg/L, (1.04-125) mg/L, ≤103.6%, ≤101.9%, and ≤ 20.0%. No interferences and carry-over were observed. Patients plasma concentrations were higher than the recommended 3-4 times the minimal inhibitory concentrations. CONCLUSIONS Our measurement procedures are suitable for therapeutic drug monitoring of ceftolozane-tazobactam in patients with osteoarticular infections.
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Affiliation(s)
- Raúl Rigo-Bonnin
- Laboratori Clínic Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain.
| | - Joan Gomez-Junyent
- Infectious Diseases Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Laura García-Tejada
- Laboratori Clínic Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Eva Benavent
- Infectious Diseases Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Laura Soldevila
- Infectious Diseases Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Fe Tubau
- Microbiology Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain; Spanish Network for Biomedical Research in Respiratory Diseases (CIBERES CB06/060037), Instituto de Salud Carlos III, Madrid, Spain
| | - Oscar Murillo
- Infectious Diseases Department, IDIBELL, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain; Spanish Network for Research in Infectious Diseases (REIPI RD12/0012), Instituto de Salud Carlos III, Madrid, Spain
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Veiga RP, Paiva JA. Pharmacokinetics-pharmacodynamics issues relevant for the clinical use of beta-lactam antibiotics in critically ill patients. Crit Care 2018; 22:233. [PMID: 30244674 PMCID: PMC6151903 DOI: 10.1186/s13054-018-2155-1] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/08/2018] [Indexed: 12/15/2022] Open
Abstract
Antimicrobials are among the most important and commonly prescribed drugs in the management of critically ill patients and beta-lactams are the most common antibiotic class used. Critically ill patient's pathophysiological factors lead to altered pharmacokinetics and pharmacodynamics of beta-lactams.A comprehensive bibliographic search in PubMed database of all English language articles published from January 2000 to December 2017 was performed, allowing the selection of articles addressing the pharmacokinetics or pharmacodynamics of beta-lactam antibiotics in critically ill patients.In critically ill patients, several factors may increase volume of distribution and enhance renal clearance, inducing high intra- and inter-patient variability in beta-lactam concentration and promoting the risk of antibiotic underdosing. The duration of infusion of beta-lactams has been shown to influence the fT > minimal inhibitory concentration and an improved beta-lactam pharmacodynamics profile may be obtained by longer exposure with more frequent dosing, extended infusions, or continuous infusions.The use of extracorporeal support techniques in the critically ill may further contribute to this problem and we recommend not reducing standard antibiotic dosage since no drug accumulation was found in the available literature and to maintain continuous or prolonged infusion, especially for the treatment of infections caused by multidrug-resistant bacteria.Prediction of outcome based on concentrations in plasma results in overestimation of antimicrobial activity at the site of infection, namely in cerebrospinal fluid and the lung. Therefore, although no studies have assessed clinical outcome, we recommend using higher than standard dosing, preferably with continuous or prolonged infusions, especially when treating less susceptible bacterial strains at these sites, as the pharmacodynamics profile may improve with no apparent increase in toxicity.A therapeutic drug monitoring-guided approach could be particularly useful in critically ill patients in whom achieving target concentrations is more difficult, such as obese patients, immunocompromised patients, those infected by highly resistant bacterial strains, patients with augmented renal clearance, and those undergoing extracorporeal support techniques.
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Affiliation(s)
- Rui Pedro Veiga
- Centro Hospitalar São João, EPE – Intensive Care Department, Porto, Portugal
- Faculty of Medicine – University of Porto, Porto, Portugal
- Grupo Infeção e Sepsis, Porto, Portugal
| | - José-Artur Paiva
- Centro Hospitalar São João, EPE – Intensive Care Department, Porto, Portugal
- Faculty of Medicine – University of Porto, Porto, Portugal
- Grupo Infeção e Sepsis, Porto, Portugal
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28
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Xiao AJ, Huntington JA, Long J, Caro L. Ceftolozane/tazobactam dose regimens in severely/morbidly obese patients with complicated intra-abdominal infection or complicated urinary tract infection. Int J Antimicrob Agents 2018; 52:324-330. [DOI: 10.1016/j.ijantimicag.2018.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 03/01/2018] [Accepted: 03/02/2018] [Indexed: 11/29/2022]
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Sebaaly J, Woods JA, Wargo KA. A Review of Ceftolozane/Tazobactam for the Treatment of Infections Caused by Multidrug-Resistant Pathogens. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2018. [DOI: 10.1097/ipc.0000000000000638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Natesan S, Pai MP, Lodise TP. Determination of alternative ceftolozane/tazobactam dosing regimens for patients with infections due to Pseudomonas aeruginosa with MIC values between 4 and 32 mg/L. J Antimicrob Chemother 2018; 72:2813-2816. [PMID: 29091209 DOI: 10.1093/jac/dkx221] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 06/11/2017] [Indexed: 01/23/2023] Open
Abstract
Background Optimization of the antibiotics for patients with infections due to MDR Pseudomonas aeruginosa (MDR-PA) often requires consideration of alternate dose and infusion times that can be influenced by renal function. Objectives We sought to identify ceftolozane/tazobactam dosing schemes that optimized the probability of target attainment (PTA) against infections due to MDR-PA with ceftolozane/tazobactam MICs between 4 and 32 mg/L across different categories of renal function. Methods A prior validated ceftolozane/tazobactam population pharmacokinetic model was used for Monte Carlo simulation of 128 alternate permutations of dose, infusion time and renal function in 5000 cases/permutation. Four ceftolozane/tazobactam doses (250/125 mg to 2/1 g) every 8 h with infusion durations of 1-7 h and as continuous infusions were simulated. The model simulated ceftolozane/tazobactam clearance as a function of creatinine clearance (CLCR) within four categories of estimated renal function: 15-29, 30-50, 51-120 and 121-180 mL/min. The PTA was benchmarked on 40% free ceftolozane/tazobactam concentration time above the MIC. Results The 512 alternate scenarios identified the current ceftolozane/tazobactam dose of 1/0.5 g to be optimal for MICs ≤32 mg/L (CLCR 15-50 mL/min), ≤16 mg/L (CLCR 51-120 mL/min) and ≤8 mg/L (CLCR 121-180 mL/min). Extended infusion of 4-5 h had a higher PTA than shorter and continuous infusions in simulations of augmented renal clearance across infections with MICs of 4-32 mg/L. Conclusions Extended infusion ceftolozane/tazobactam regimens should be investigated as a potential dosing solution to improve the PTA against infections due to MDR-PA with higher ceftolozane/tazobactam MICs.
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Affiliation(s)
- Senthil Natesan
- Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Spokane, WA, USA
| | - Manjunath P Pai
- Department of Clinical Pharmacy, University of Michigan College of Pharmacy, Ann Arbor, MI, USA
| | - Thomas P Lodise
- Albany College of Pharmacy and Health Sciences, Albany, NY, USA
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Abstract
Antimicrobial use in older adults requires working knowledge of the pharmacokinetics and pharmacodynamics of these drugs, and the alterations known to occur with these models as patients age. A summary of pharmacokinetic principles relevant to antimicrobials and an overview of published medical literature describing pharmacokinetic changes known to correlate with age are presented. Pharmacodynamic models that apply to antibacterial agents are reviewed, as are likely effects of aging on these models. The understanding of how older adults respond in terms of efficacy and toxicity is increasing but limited. Further research into the effects of aging on the actions of antimicrobials in the elderly is needed.
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32
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Giacobbe DR, Bassetti M, De Rosa FG, Del Bono V, Grossi PA, Menichetti F, Pea F, Rossolini GM, Tumbarello M, Viale P, Viscoli C. Ceftolozane/tazobactam: place in therapy. Expert Rev Anti Infect Ther 2018; 16:307-320. [DOI: 10.1080/14787210.2018.1447381] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Daniele Roberto Giacobbe
- Infectious Diseases Unit, Ospedale Policlinico San Martino – IRCCS per l’Oncologia and Department of Health Sciences, University of Genoa, Genoa, Italy
| | - Matteo Bassetti
- Infectious Diseases Clinic, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata Presidio Ospedaliero Universitario Santa Maria della Misericordia, Udine, Italy
| | - Francesco Giuseppe De Rosa
- Department of Medical Sciences, University of Turin, Infectious Diseases, City of Health and Sciences, Turin, Italy
| | - Valerio Del Bono
- Infectious Diseases Unit, Ospedale Policlinico San Martino – IRCCS per l’Oncologia and Department of Health Sciences, University of Genoa, Genoa, Italy
| | - Paolo Antonio Grossi
- Department of Surgical and Morphological Sciences of Clinical Medicine, University of Insubria, Varese, Italy
| | - Francesco Menichetti
- Infectious Diseases Clinic, Nuovo Santa Chiara University Hospital, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Federico Pea
- Institute of Clinical Pharmacology, Department of Medicine, University of Udine and Azienda Sanitaria Universitaria Integrata Presidio Ospedaliero Universitario Santa Maria della Misericordia, Udine, Italy
| | - Gian Maria Rossolini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Clinical Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
| | - Mario Tumbarello
- Institute of Infectious Diseases, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Pierluigi Viale
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Claudio Viscoli
- Infectious Diseases Unit, Ospedale Policlinico San Martino – IRCCS per l’Oncologia and Department of Health Sciences, University of Genoa, Genoa, Italy
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Yu B, Adedoyin A, Hershberger E, Caro L, Xiao A, Rhee EG, Huntington JA. Safety, Tolerability, and Pharmacokinetics of 3 g of Ceftolozane/Tazobactam in Healthy Adults: A Randomized, Placebo-Controlled, Multiple-Dose Study. Clin Pharmacol Drug Dev 2018. [PMID: 29517862 DOI: 10.1002/cpdd.429] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Ceftolozane/tazobactam is an antibacterial approved at 1.5 g (1g/0.5 g) every 8 hours (q8h); higher doses may provide additional benefits in difficult-to-treat infections. We conducted a phase I trial in healthy adults evaluating safety, tolerability, and pharmacokinetics of 3 g (2 g/1 g) ceftolozane/tazobactam administered q8h for 10 days. Sixteen participants were randomized (2:1:1) to 3 g ceftolozane/tazobactam, 1.5 g ceftolozane/tazobactam, or placebo. Participants underwent regular safety and plasma drug level assessments, with a follow-up safety visit 7 days after completion. No adverse events (AEs) were reported with placebo; 75% of participants in the 1.5-g and 50% in the 3-g arm experienced AEs. AE types were similar between the ceftolozane/tazobactam groups; all AEs were mild. No participants experienced clinically meaningful laboratory assessment or electrocardiogram abnormalities. Both ceftolozane and tazobactam exhibited dose-proportional pharmacokinetics without accumulation and without substantial differences in clearance and volume of distribution between groups. In the 3-g group, mean ceftolozane parameters were: peak concentration 104 μg/mL (day 1), 112 μg/mL (day 10); half-life 3 hours (day 10); area under the concentration-time curve (AUC(0-t) ) 272 μg·h/mL (day 1), 300μg·h/mL (day 10). Mean tazobactam parameters were: peak concentration 28 μg/mL (day 1), 26 μg/mL (day 10); half-life 1 hour (day 10); AUC(0-t) 47μg·h/mL (day 1), 41μg·h/mL (day 10). Administration of 3 g ceftolozane/tazobactam q8h for 10 days was safe and well tolerated in healthy volunteers.
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Affiliation(s)
- Brian Yu
- Merck & Co, Inc, Kenilworth, NJ, USA
| | | | | | | | - Alan Xiao
- Merck & Co, Inc, Kenilworth, NJ, USA
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Kawaguchi N, Katsube T, Echols R, Wajima T. Population Pharmacokinetic Analysis of Cefiderocol, a Parenteral Siderophore Cephalosporin, in Healthy Subjects, Subjects with Various Degrees of Renal Function, and Patients with Complicated Urinary Tract Infection or Acute Uncomplicated Pyelonephritis. Antimicrob Agents Chemother 2018; 62:e01391-17. [PMID: 29038272 PMCID: PMC5786804 DOI: 10.1128/aac.01391-17] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/05/2017] [Indexed: 12/02/2022] Open
Abstract
Cefiderocol, a novel parenteral siderophore cephalosporin, exhibits potent efficacy against most Gram-negative bacteria, including carbapenem-resistant strains. The aim of this study was to perform a population pharmacokinetic (PK) analysis based on plasma cefiderocol concentrations in healthy subjects, subjects with various degrees of renal function, and patients with complicated urinary tract infection (cUTI) or acute uncomplicated pyelonephritis (AUP) caused by Gram-negative pathogens and to calculate the fraction of the time during the dosing interval where the free drug concentration in plasma exceeds the MIC (fTMIC). Population PK models were developed with three renal function markers, body surface area-adjusted estimated glomerular filtration rate (eGFR), absolute eGFR, and creatinine clearance, on the basis of 2,571 plasma concentrations from 91 subjects without infection and 238 patients with infection. The population PK models with each renal function marker adequately described the plasma cefiderocol concentrations. Clear relationships of total clearance (CL) to all renal function markers were observed. Body weight and disease status (with or without infection) were also significant covariates. The CL in patients with infection was 26% higher than that in subjects without infection. The fTMIC values were more than 75% in all patients (and were 100% in most patients), suggesting that a sufficient exposure to cefiderocol was provided by the tested dose regimens (2 g every 8 h as the standard dose regimen) for the treatment of cUTI or AUP caused by Gram-negative pathogens.
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Affiliation(s)
- Nao Kawaguchi
- Project Management Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Takayuki Katsube
- Project Management Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Roger Echols
- Infectious Disease Drug Development Consulting, LLC, Easton, Connecticut, USA
| | - Toshihiro Wajima
- Project Management Department, Shionogi & Co., Ltd., Osaka, Japan
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35
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Pharmacokinetics and Tissue Penetration of Ceftolozane-Tazobactam in Diabetic Patients with Lower Limb Infections and Healthy Adult Volunteers. Antimicrob Agents Chemother 2017; 61:AAC.01449-17. [PMID: 28893779 DOI: 10.1128/aac.01449-17] [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: 07/16/2017] [Accepted: 09/02/2017] [Indexed: 12/28/2022] Open
Abstract
Ceftolozane-tazobactam displays potent activity against Gram-negative bacteria that can cause diabetic foot infections (DFI), making it an attractive treatment option when few alternatives exist. The pharmacokinetics and tissue penetration of ceftolozane-tazobactam at 1.5 g every 8 h (q8h) in patients (n = 10) with DFI were compared with those in healthy volunteers (n = 6) using in vivo microdialysis. In the patient participants, the median values of the pharmacokinetic parameters for ceftolozane in total plasma were as follows: maximum concentration (Cmax), 55.2 μg/ml (range, 40.9 to 169.3 μg/ml); half-life (t1/2), 3.5 h (range, 2.3 to 4.7 h); and area under the concentration-time curve (AUC) from time zero to 8 h (AUC0-8), 191.6 μg · h/ml (range, 147.1 to 286.6 μg · h/ml). The median AUC for tissue (AUCtissue; where AUCtissue was the AUC0-8 for tissue for ceftolozane)/AUC for plasma for each antibiotic corrected by the fraction of free drug (fAUCplasma) was 0.75 (range, 0.35 to 1.00), resulting in a mean free time above 4 μg/ml (the Pseudomonas aeruginosa susceptibility breakpoint) in tissue of 99.8% (range, 87.5 to 100%). In the patient participants, the median values of the pharmacokinetic parameters for tazobactam in total plasma were as follows: Cmax, 14.2 μg/ml (range, 7.6 to 64.2 μg/ml); t1/2, 2.0 h (range, 0.7 to 2.4 h); and AUC0-8, 27.1 μg · h/ml (range, 15.0 to 70.0 μg · h/ml). The AUCtissue (where AUCtissue was the AUC from time zero to the time of the last measureable concentration in tissue for tazobactam)/fAUCplasma for tazobactam was 1.18 (range, 0.54 to 1.44). In the healthy volunteers, the median values of the pharmacokinetic parameters for ceftolozane in total plasma were as follows: Cmax, 91.5 μg/ml (range, 65.7 to 110.7 μg/ml); t1/2, 1.9 h (range, 1.6 to 2.1 h); and AUC0-8, 191.3 μg · h/ml (range, 118.1 to 274.3 μg · h/ml). The median AUCtissue/fAUCplasma was 0.87 (range, 0.54 to 2.20), resulting in a mean free time above 4 μg/ml in tissue of 93.8% (range, 87.5 to 100%). In the healthy volunteers, the median values of the pharmacokinetic parameters for tazobactam in total plasma were as follows: Cmax, 17.5 μg/ml (range, 15.4 to 27.3 μg/ml); t1/2, 0.7 h (range, 0.6 to 0.8 h); and AUC0-8, 22.2 μg · h/ml (range, 19.2 to 36.4 μg · h/ml). The AUCtissue/fAUCplasma for tazobactam was 0.85 (range, 0.63 to 2.10). Both ceftolozane and tazobactam penetrated into subcutaneous tissue with exposures similar to those of free drug in plasma in both patients with DFI and healthy volunteers. These data suggest that ceftolozane-tazobactam at 1.5 g q8h can achieve the optimal exposure with activity against susceptible Gram-negative pathogens in the tissue of patients with DFI. (This study has been registered at ClinicalTrials.gov under identifier NCT02620774.).
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Stokem K, Zuckerman JB, Nicolau DP, Wungwattana M, Sears EH. Use of ceftolozane-tazobactam in a cystic fibrosis patient with multidrug-resistant pseudomonas infection and renal insufficiency. Respir Med Case Rep 2017; 23:8-9. [PMID: 29159032 PMCID: PMC5683800 DOI: 10.1016/j.rmcr.2017.10.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/26/2017] [Accepted: 10/27/2017] [Indexed: 11/21/2022] Open
Abstract
We report the successful use of ceftolozane/tazobactam (C/T) to treat a pulmonary exacerbation in a 35 year old female, post lung transplant, with cystic fibrosis (CF), malnutrition, chronic kidney disease, and multi-drug resistant Pseudomonas aeruginosa infection (MDR PSA). Given the complexity of the clinical profile, we measured drug levels of C/T during treatment of her current exacerbation to determine pharmacokinetics. The patient achieved an estimated ceftolozane peak of 174.1 μg/mL and trough of 9.2 μg/mL. Serum half-life was found to be slightly shorter than previously reported in normal subjects, (2.3 hr. vs. 2.6 hr.) despite the presence of renal insufficiency. Treatment resulted in improvement in serum inflammatory markers and symptoms and was well-tolerated.
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Affiliation(s)
- Katie Stokem
- Maine Medical Center, Division of Pulmonary and Critical Care Medicine, Portland, ME 04102, USA
- Corresponding author.
| | - Jonathan B. Zuckerman
- Maine Medical Center, Division of Pulmonary and Critical Care Medicine, Portland, ME 04102, USA
| | - David P. Nicolau
- Hartford Hospital, Center for Anti-Infective Research and Development, 80 Seymour Street, P O Box 5037, Hartford, CT 06102, USA
| | | | - Edmund H. Sears
- Maine Medical Center, Division of Pulmonary and Critical Care Medicine, Portland, ME 04102, USA
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Yılmaz Ç, Özcengiz G. Antibiotics: Pharmacokinetics, toxicity, resistance and multidrug efflux pumps. Biochem Pharmacol 2017; 133:43-62. [DOI: 10.1016/j.bcp.2016.10.005] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 10/14/2016] [Indexed: 02/03/2023]
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« Nouvelles » molécules anti-infectieuses. Quelle place en médecine intensive/réanimation pour ceftolozane–tazobactam et la témocilline ? MEDECINE INTENSIVE REANIMATION 2017. [DOI: 10.1007/s13546-017-1267-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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PK/PD Target Attainment With Ceftolozane/Tazobactam Using Monte Carlo Simulation in Patients With Various Degrees of Renal Function, Including Augmented Renal Clearance and End-Stage Renal Disease. Infect Dis Ther 2016; 6:137-148. [PMID: 28013453 PMCID: PMC5336418 DOI: 10.1007/s40121-016-0143-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Indexed: 11/04/2022] Open
Abstract
Introduction Ceftolozane/tazobactam is an antibacterial agent with potent in vitro activity against Gram-negative pathogens, including many extended-spectrum β-lactamase-producing Enterobacteriaceae and drug-resistant Pseudomonas aeruginosa. Because ceftolozane/tazobactam is primarily excreted renally, appropriate dose adjustments are needed for patients with renal impairment. Monte Carlo simulations were used to determine the probability of pharmacokinetic/pharmacodynamic target attainment for patients with varying degrees of renal function, including augmented renal clearance (ARC) and end-stage renal disease (ESRD) with hemodialysis. Methods Monte Carlo simulations were conducted for 1000 patients with ARC and normal renal function, mild renal impairment, moderate renal impairment, or severe renal impairment, and for 5000 patients with ESRD. Simulated dosing regimens were based on approved doses for each renal function category. Attainment targets for ceftolozane were 24.8% (bacteriostasis), 32.2% (1-log kill; bactericidal), and 40% (2-log kill) fT > minimum inhibitory concentration (MIC). The target for tazobactam was to achieve a 20% fT > minimum effective concentration (MEC) at an MEC of 1 mg/L, which was derived from a neutropenic mouse thigh infection model and was confirmed by efficacy data from clinical studies for complicated intraabdominal infections and complicated urinary tract infections. Results In patients with ARC or normal renal function, ≥91% achieved bactericidal activity (32.2% fT > MIC) up to an MIC of 4 mg/L with a 1000-mg ceftolozane dose. In patients with renal impairment (mild, moderate, severe, ESRD), ≥93% achieved bactericidal activity up to an MIC of 8 mg/L. In patients of all renal function categories, the approved dosing regimens of tazobactam achieved ≥91% target attainment against a target of 20% fT > MEC. Conclusions At the approved dosing regimens for ceftolozane/tazobactam, ≥91% of patients in all renal function categories, including ARC (up to 200 mL/min) and ESRD, reached target attainment for bactericidal activity at MICs that correspond to susceptibility breakpoints for Enterobacteriaceae and P. aeruginosa.
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Goodlet KJ, Nicolau DP, Nailor MD. Ceftolozane/tazobactam and ceftazidime/avibactam for the treatment of complicated intra-abdominal infections. Ther Clin Risk Manag 2016; 12:1811-1826. [PMID: 27942218 PMCID: PMC5140030 DOI: 10.2147/tcrm.s120811] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Complicated intra-abdominal infections (cIAI) represent a large proportion of all hospital admissions and are a major cause of morbidity and mortality in the intensive care unit. Rising rates of multidrug resistant organisms (MDRO), including extended-spectrum β-lactamase producing Enterobacteriaceae and carbapenem-nonsusceptible Pseudomonas spp., for which there are few remaining active antimicrobial agents, pose an increased challenge to clinicians. Patients with frequent exposures to the health care system or multiple recurrent IAIs are at increased risk for MDRO; however, treatment options have traditionally been limited, in some cases necessitating the utilization of last-line agents with unfavorable side-effect profiles. Ceftolozane/tazobactam and ceftazidime/avibactam are two new cephalosporin and β-lactamase inhibitor combinations with recent US Food and Drug Administration approvals for the treatment of cIAI in combination with metronidazole. Ceftolozane/tazobactam has demonstrated excellent in vitro activity against MDR and extensively drug-resistant Pseudomonas spp., including carbapenem-nonsusceptible strains, while ceftazidime/avibactam effectively inhibits a broad range of β-lactamases, making it an excellent option for the treatment of carbapenem-resistant Enterobacteriaceae. Both agents were shown to be noninferior to meropenem for treatment of cIAI in Phase III trials; however, reduced responses in patients with renal impairment at baseline highlight the importance of routine serum creatinine monitoring and ongoing dose adjustments. This review highlights in vitro and in vivo data of these two agents and suggests their proper place in cIAI treatment to ensure adequate therapy in our most at-risk patients while sparing unnecessary use in patients without MDRO risk factors.
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Affiliation(s)
- Kellie J Goodlet
- Department of Pharmacy Services, Hartford Hospital, Hartford, CT, USA
| | - David P Nicolau
- Center of Anti-Infective Research, Hartford Hospital, Hartford, CT, USA
| | - Michael D Nailor
- Department of Pharmacy Services, Hartford Hospital, Hartford, CT, USA; Department of Pharmacy Practice, School of Pharmacy, University of Connecticut, Storrs, CT, USA
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Monogue ML, Pettit RS, Muhlebach M, Cies JJ, Nicolau DP, Kuti JL. Population Pharmacokinetics and Safety of Ceftolozane-Tazobactam in Adult Cystic Fibrosis Patients Admitted with Acute Pulmonary Exacerbation. Antimicrob Agents Chemother 2016; 60:6578-6584. [PMID: 27550351 PMCID: PMC5075062 DOI: 10.1128/aac.01566-16] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 08/13/2016] [Indexed: 11/20/2022] Open
Abstract
Ceftolozane-tazobactam has potent activity against Pseudomonas aeruginosa, a pathogen associated with cystic fibrosis (CF) acute pulmonary exacerbations (APE). Due to the rapid elimination of many antibiotics, CF patients frequently have altered pharmacokinetics. In this multicenter, open-label study, we described the population pharmacokinetics and safety of ceftolozane-tazobactam at 3 g every 8 h (q8h) in 20 adult CF patients admitted with APE. Population pharmacokinetics were determined using the nonparametric adaptive grid program in Pmetrics for R. A 5,000-patient Monte Carlo simulation was performed to determine the probability of target attainment (PTA) for the ceftolozane component at 1.5 g and 3 g of ceftolozane-tazobactam q8h across a range of MICs using a primary threshold exposure of 60% free time above the MIC (fT>MIC). In these 20 adult CF patients, ceftolozane and tazobactam concentration data were best described by 2-compartment models, and ceftolozane clearance (CL) was significantly correlated with creatinine clearance (r = 0.71, P < 0.001). These data suggest that ceftolozane and tazobactam clearance estimates in CF patients are similar to those in adults without CF (ceftolozane CF CL, 4.76 ± 1.13 liter/h; tazobactam CF CL, 20.51 ± 4.41 liter/h). However, estimates of the volume of the central compartment (Vc) were lower than those for adults without CF (ceftolozane CF Vc, 7.51 ± 2.05 liters; tazobactam CF Vc, 7.85 ± 2.66 liters). Using a threshold of 60% fT>MIC, ceftolozane-tazobactam regimens of 1.5 g and 3 g q8h should achieve PTAs of ≥90% at MICs up to 4 and 8 μg/ml, respectively. Ceftolozane-tazobactam at 3 g q8h was well tolerated. These observations support additional studies of ceftolozane-tazobactam for Pseudomonas aeruginosa APE in CF patients. (This study has been registered at ClinicalTrials.gov under identifier NCT02421120.).
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Affiliation(s)
- Marguerite L Monogue
- Center for Anti-Infective Research & Development, Hartford Hospital, Hartford, Connecticut, USA
| | | | | | - Jeffrey J Cies
- St. Christopher's Hospital for Children, Philadelphia, Pennsylvania, USA
| | - David P Nicolau
- Center for Anti-Infective Research & Development, Hartford Hospital, Hartford, Connecticut, USA
| | - Joseph L Kuti
- Center for Anti-Infective Research & Development, Hartford Hospital, Hartford, Connecticut, USA
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Scott LJ. Ceftolozane/Tazobactam: A Review in Complicated Intra-Abdominal and Urinary Tract Infections. Drugs 2016; 76:231-42. [PMID: 26746849 DOI: 10.1007/s40265-015-0524-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Globally, the increasing prevalence of multidrug-resistant pathogens continues to pose major problems in healthcare systems and, at least in part, is driving an initiative to develop new antibacterials, such as ceftolozane (a cephalosporin β-lactam). Adding a β-lactamase inhibitor (e.g. tazobactam) to a β-lactam extends its spectrum of activity against β-lactamase-producing microorganisms (a key mechanism of resistance to β-lactams). Ceftolozane/tazobactam (Zerbaxa™), a β-lactam/β-lactamase inhibitor combination, is indicated for the treatment of adults with complicated intra-abdominal infections (cIAI) or complicated urinary tract infections (cUTI), including pyelonephritis. In multinational, phase 3 noninferiority trials, intravenous ceftolozane/tazobactam was an effective and generally well tolerated treatment in patients with cIAI or cUTI. In the ASPECT-cIAI trial, ceftolozane/tazobactam plus metronidazole was noninferior to meropenem in terms of clinical cure rates at the test-of-cure (TOC) visit, with clinical cure rates in subgroup analyses consistent with those in the primary analysis. In the ASPECT-cUTI trial, ceftolozane/tazobactam was superior to levofloxacin in terms of composite cure rates (clinical cure plus microbiological eradiation) at the TOC visit. Further clinical experience should help to more definitively position ceftolozane/tazobactam in the treatment of cIAI and cUTI, including in patients with renal impairment. In the meantime, given its very good in vitro activity against extended-spectrum β-lactamase-producing Enterobacteriaceae and drug-resistant Pseudomonas aeruginosa isolates, ceftolozane/tazobactam provides a potential alternative to currently approved antibacterials for empirical treatment of cIAI and cUTI in adults.
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Affiliation(s)
- Lesley J Scott
- Springer, Private Bag 65901, Mairangi Bay, 0754, Auckland, New Zealand.
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Cluck D, Lewis P, Stayer B, Spivey J, Moorman J. Ceftolozane-tazobactam: A new-generation cephalosporin. Am J Health Syst Pharm 2016; 72:2135-46. [PMID: 26637512 DOI: 10.2146/ajhp150049] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The chemistry, pharmacokinetic and pharmacodynamic properties, efficacy, and safety of the recently introduced combination antimicrobial agent ceftolozane-tazobactam are reviewed. SUMMARY Ceftolozane-tazobactam (Zerbaxa, Cubist Pharmaceuticals) is a cephalosporin β-lactam and β-lactamase inhibitor marketed as a fixed-dose combination agent for the treatment of complicated urinary tract and intraabdominal infections. Its dosing and chemistry provide expansive antimicrobial coverage of gram-negative organisms, including Pseudomonas aeruginosa, and stable activity against many β-lactamases, as well as coverage of most extended-spectrum β-lactamase-producing organisms and some anaerobes. Ceftolozane-tazobactam is susceptible to hydrolysis by carbapenemase enzymes but is not affected by other resistance mechanisms such as efflux pumps and porin loss. Clinical trials demonstrated that combination treatment with ceftolozane-tazobactam plus metronidazole had efficacy comparable to that of levofloxacin in patients with complicated urinary tract infections, including pyelonephritis, and comparable to that of meropenem against complicated intraabdominal infections. A Phase III trial of ceftolozane-tazobactam versus meropenem for treatment of bacterial pneumonia, including ventilator-associated pneumonia, is underway. Adverse effects reported with ceftolozane-tazobactam use are comparable to those seen with other β-lactams (e.g., hypersensitivity, nausea, diarrhea, headache). Initially, ceftolozane-tazobactam may be reserved for targeted therapy against multidrug-resistant pathogens. CONCLUSION Ceftolozane-tazobactam is a new cephalosporin with enhanced activity against multidrug-resistant P. aeruginosa and other gram-negative pathogens.
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Affiliation(s)
- David Cluck
- David Cluck, Pharm.D., is Clinical Assistant Professor, Department of Pharmacy Practice, East Tennessee State University (ETSU) Gatton College of Pharmacy, Johnson City. Paul Lewis, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Johnson City Medical Center, Johnson City. Brooke Stayer, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Holston Valley Medical Center, Kingsport, TN. Justin Spivey, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, James H. Quillen Veterans Affairs (VA) Medical Center, Johnson City. Jonathan Moorman, M.D., is Professor of Medicine and Chief, Division of Infectious Diseases, ETSU Quillen College of Medicine, Johnson City.
| | - Paul Lewis
- David Cluck, Pharm.D., is Clinical Assistant Professor, Department of Pharmacy Practice, East Tennessee State University (ETSU) Gatton College of Pharmacy, Johnson City. Paul Lewis, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Johnson City Medical Center, Johnson City. Brooke Stayer, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Holston Valley Medical Center, Kingsport, TN. Justin Spivey, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, James H. Quillen Veterans Affairs (VA) Medical Center, Johnson City. Jonathan Moorman, M.D., is Professor of Medicine and Chief, Division of Infectious Diseases, ETSU Quillen College of Medicine, Johnson City
| | - Brooke Stayer
- David Cluck, Pharm.D., is Clinical Assistant Professor, Department of Pharmacy Practice, East Tennessee State University (ETSU) Gatton College of Pharmacy, Johnson City. Paul Lewis, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Johnson City Medical Center, Johnson City. Brooke Stayer, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Holston Valley Medical Center, Kingsport, TN. Justin Spivey, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, James H. Quillen Veterans Affairs (VA) Medical Center, Johnson City. Jonathan Moorman, M.D., is Professor of Medicine and Chief, Division of Infectious Diseases, ETSU Quillen College of Medicine, Johnson City
| | - Justin Spivey
- David Cluck, Pharm.D., is Clinical Assistant Professor, Department of Pharmacy Practice, East Tennessee State University (ETSU) Gatton College of Pharmacy, Johnson City. Paul Lewis, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Johnson City Medical Center, Johnson City. Brooke Stayer, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Holston Valley Medical Center, Kingsport, TN. Justin Spivey, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, James H. Quillen Veterans Affairs (VA) Medical Center, Johnson City. Jonathan Moorman, M.D., is Professor of Medicine and Chief, Division of Infectious Diseases, ETSU Quillen College of Medicine, Johnson City
| | - Jonathan Moorman
- David Cluck, Pharm.D., is Clinical Assistant Professor, Department of Pharmacy Practice, East Tennessee State University (ETSU) Gatton College of Pharmacy, Johnson City. Paul Lewis, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Johnson City Medical Center, Johnson City. Brooke Stayer, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, Holston Valley Medical Center, Kingsport, TN. Justin Spivey, Pharm.D., is Clinical Pharmacist-Infectious Diseases, Department of Pharmacy, James H. Quillen Veterans Affairs (VA) Medical Center, Johnson City. Jonathan Moorman, M.D., is Professor of Medicine and Chief, Division of Infectious Diseases, ETSU Quillen College of Medicine, Johnson City
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van Duin D, Bonomo RA. Ceftazidime/Avibactam and Ceftolozane/Tazobactam: Second-generation β-Lactam/β-Lactamase Inhibitor Combinations. Clin Infect Dis 2016; 63:234-41. [PMID: 27098166 PMCID: PMC4928383 DOI: 10.1093/cid/ciw243] [Citation(s) in RCA: 393] [Impact Index Per Article: 49.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/06/2016] [Indexed: 02/02/2023] Open
Abstract
Ceftolozane/tazobactam and ceftazidime/avibactam are 2 novel β-lactam/β-lactamase combination antibiotics. The antimicrobial spectrum of activity of these antibiotics includes multidrug-resistant (MDR) gram-negative bacteria (GNB), including Pseudomonas aeruginosa. Ceftazidime/avibactam is also active against carbapenem-resistant Enterobacteriaceae that produce Klebsiella pneumoniae carbapenemases. However, avibactam does not inactivate metallo-β-lactamases such as New Delhi metallo-β-lactamases. Both ceftolozane/tazobactam and ceftazidime/avibactam are only available as intravenous formulations and are dosed 3 times daily in patients with normal renal function. Clinical trials showed noninferiority to comparators of both agents when used in the treatment of complicated urinary tract infections and complicated intra-abdominal infections (when used with metronidazole). Results from pneumonia studies have not yet been reported. In summary, ceftolozane/tazobactam and ceftazidime/avibactam are 2 new second-generation cephalosporin/β-lactamase inhibitor combinations. After appropriate trials are conducted, they may prove useful in the treatment of MDR GNB infections. Antimicrobial stewardship will be essential to preserve the activity of these agents.
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Affiliation(s)
- David van Duin
- Division of Infectious Diseases, University of North Carolina, Chapel Hill
| | - Robert A Bonomo
- Research Service, Louis Stokes Cleveland Department of Veterans Affairs Medical Center Division of Infectious Diseases and HIV Medicine, Department of Medicine Department of Molecular Biology and Microbiology Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, Ohio
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Wagenlehner FM, Alidjanov JF. Efficacy, pharmacokinetic and pharmacodynamic profile of ceftolozane + tazobactam in the treatment of complicated urinary tract infections. Expert Opin Drug Metab Toxicol 2016; 12:959-66. [PMID: 27327964 DOI: 10.1080/17425255.2016.1201065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
INTRODUCTION Urinary tract infections (UTIs) are the second most common nosocomially acquired infections, responsible for approximately 21% of healthcare-associated pyelonephritis and 10.5% of urosepsis. Worldwide trends of increasing resistance resulted in the urgent need for novel antimicrobials that would be active against bacterial resistance mechanisms as an alternative to carbapenems, which are considered last resort antibiotics. AREAS COVERED The current review is based on a Medline search of published English language literature and contains summary information regarding the evaluation of pharmacologic properties, efficacy, safety and activity of ceftolozane+tazobactam against common bacterial resistance mechanisms. EXPERT OPINION In vivo and vitro studies demonstrated high activity of ceftolozane+tazobactam in the combination of 2:1 against a variety of uropathogens, including ESBL-producers. Phase II and Phase III studies performed in patients with complicated UTIs showed good tolerability and safety of ceftolozane+tazobactam when prescribed intravenously 1.5 g every 8 h for 7 days and at least non-inferiority to a high dose (750 mg) of levofloxacin. The pharmacokinetics of ceftolozane+tazobactam makes it a worthy alternative to carbapenems in cases of complicated UTIs, also caused by multidrug resistant uropathogens.
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Affiliation(s)
- Florian M Wagenlehner
- a Department of Urology, Pediatric Urology and Andrology , Justus-Liebig University , Giessen , Germany
| | - Jakhongir F Alidjanov
- a Department of Urology, Pediatric Urology and Andrology , Justus-Liebig University , Giessen , Germany.,b Outpatient Department of the JSC , 'Republican Specialized Center of Urology' , Tashkent , Uzbekistan
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Xiao AJ, Miller BW, Huntington JA, Nicolau DP. Ceftolozane/tazobactam pharmacokinetic/pharmacodynamic-derived dose justification for phase 3 studies in patients with nosocomial pneumonia. J Clin Pharmacol 2015; 56:56-66. [PMID: 26096377 PMCID: PMC5049594 DOI: 10.1002/jcph.566] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/02/2015] [Indexed: 12/28/2022]
Abstract
Ceftolozane/tazobactam is an antipseudomonal antibacterial approved for the treatment of complicated urinary tract infections (cUTIs) and complicated intra‐abdominal infections (cIAIs) and in phase 3 clinical development for treatment of nosocomial pneumonia. A population pharmacokinetic (PK) model with the plasma‐to‐epithelial lining fluid (ELF) kinetics of ceftolozane/tazobactam was used to justify dosing regimens for patients with nosocomial pneumonia in phase 3 studies. Monte Carlo simulations were performed to determine ceftolozane/tazobactam dosing regimens with a >90% probability of target attainment (PTA) for a range of pharmacokinetic/pharmacodynamic targets at relevant minimum inhibitory concentrations (MICs) for key pathogens in nosocomial pneumonia. With a plasma‐to‐ELF penetration ratio of approximately 50%, as observed from an ELF PK study, a doubling of the current dose regimens for different renal functions that are approved for cUTIs and cIAIs is needed to achieve >90% PTA for nosocomial pneumonia. For example, a 3‐g dose of ceftolozane/tazobactam for nosocomial pneumonia patients with normal renal function is needed to achieve a >90% PTA (actual 98%) for the 1‐log kill target against pathogens with an MIC of ≤8 mg/L in ELF, compared with the 1.5‐g dose approved for cIAIs and cUTIs.
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Abstract
Objective: To review the chemistry, pharmacology, microbiology, pharmacokinetics, pharmacodynamics, clinical efficacy, tolerability, dosage, and administration of ceftolozane/tazobactam, a new antipseudomonal cephalosporin combined with a well-established β-lactamase inhibitor. Data Sources: A literature search through clinicaltrials.gov and PubMed was conducted (January 2007-May 2015) using the search terms ceftolozane, ceftolozane/tazobactam, FR264205, CXA-101/tazobactam, and CXA-201. References from retrieved articles and abstracts presented at recent meetings were reviewed to identify additional material. The prescribing information was also reviewed. Study Selection and Data Extraction: Preclinical data as well as phase 1, 2, and 3 studies published in English were evaluated. Data Synthesis: Ceftolozane/tazobactam displays enhanced potency against Pseudomonas aeruginosa in vitro. Clinical trials have shown that ceftolozane/tazobactam is noninferior to levofloxacin for the treatment of complicated urinary tract infections (76.9% vs 68.4%, 95% CI = 2.3-14.6) and when used in combination with metronidazole is noninferior to meropenem for the treatment of complicated intra-abdominal infections (83% vs 87.3%, 95% CI = −8.91 to 0.54). An alternate antibiotic should be considered in patients who have a severe β-lactam allergy or an estimated creatinine clearance between 30 and 50 mL/min. Ceftolozane/tazobactam is well tolerated, with few drug interactions and no effects on the cytochrome P450 system. Conclusions: In an era of increasing resistance to antimicrobials, ceftolozane/tazobactam provides clinicians with an additional treatment option for infections caused by multidrug-resistant Gram-negative organisms, including extended-spectrum β-lactamase–producing bacteria and Pseudomonas aeruginosa.
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Affiliation(s)
| | - Elias B. Chahine
- Palm Beach Atlantic University School of Pharmacy, West Palm Beach, FL, USA
| | - Peter Cogan
- Regis University School of Pharmacy, Denver, CO, USA
| | - Matthew Fete
- Regis University School of Pharmacy, Denver, CO, USA
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Cho JC, Fiorenza MA, Estrada SJ. Ceftolozane/Tazobactam: A Novel Cephalosporin/β-Lactamase Inhibitor Combination. Pharmacotherapy 2015; 35:701-15. [DOI: 10.1002/phar.1609] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jonathan C. Cho
- Department of Pharmacy; Lee Memorial Health System; Fort Myers Florida
| | | | - Sandy J. Estrada
- Department of Pharmacy; Lee Memorial Health System; Fort Myers Florida
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Ceftolozane/tazobactam and ceftazidime/avibactam: two novel β-lactam/β-lactamase inhibitor combination agents for the treatment of resistant Gram-negative bacterial infections. Int J Antimicrob Agents 2015; 46:266-71. [PMID: 26143591 DOI: 10.1016/j.ijantimicag.2015.05.003] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 05/11/2015] [Indexed: 11/24/2022]
Abstract
The rise in resistant Gram-negative bacteria is a major concern and has led to difficulty in treating multidrug-resistant (MDR) infections. Two recently approved combination antibiotics, ceftolozane/tazobactam and ceftazidime/avibactam, may be effective in treating these resistant infections. Ceftolozane is a novel cephalosporin that has been developed in combination with tazobactam, a recognised β-lactamase inhibitor (BLI). Avibactam is a novel BLI combined with ceftazidime, a cephalosporin with an established history. Both of these β-lactam/BLI combination agents have been shown to retain in vitro activity against selected resistant Gram-negative pathogens, including Enterobacteriaceae and Pseudomonas aeruginosa; notably, ceftazidime/avibactam has demonstrated consistent activity against Klebsiella pneumoniae carbapenemase (KPC)-producing organisms. Both agents have been approved for the indications of complicated intra-abdominal infection (with metronidazole) and complicated urinary tract infection, and have ongoing phase 3 trials for the treatment of ventilator-associated and nosocomial pneumonia. This manuscript will review current data available regarding the spectrum of activity and clinical trials that led to the US Food and Drug Administration (FDA) approval of these agents. Both agents appear to be well tolerated and show promise in the treatment of MDR Gram-negative infections.
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Abstract
Each month, subscribers to The Formulary Monograph Service receive 5 to 6 well-documented monographs on drugs that are newly released or are in late phase 3 trials. The monographs are targeted to Pharmacy & Therapeutics Committees. Subscribers also receive monthly 1-page summary monographs on agents that are useful for agendas and pharmacy/nursing in-services. A comprehensive target drug utilization evaluation/medication use evaluation (DUE/MUE) is also provided each month. With a subscription, the monographs are sent in print and are also available on-line. Monographs can be customized to meet the needs of a facility. A drug class review is now published monthly with The Formulary Monograph Service. Through the cooperation of The Formulary, Hospital Pharmacy publishes selected reviews in this column. For more information about The Formulary Monograph Service, call The Formulary at 800-322-4349. The June 2015 monograph topics are ceftazidime-avibactam, isavuconazonium sulfate, panobinostat, levodopa-carbidopa intestinal gel, and LCZ696. The Safety MUE is on ceftazidime-avibactam.
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Affiliation(s)
- Dennis J Cada
- Founder and Contributing Editor, The Formulary , Washington State University Spokane , Spokane, Washington
| | - Jesse Wageman
- PGY1 Resident, Kootenai Health & Medical Center , Coeur d'Alene, Idaho
| | - Danial E Baker
- Director, Drug Information Center, and Professor of Pharmacy Practice, College of Pharmacy, Washington State University Spokane , Spokane, Washington
| | - Terri L Levien
- Clinical Professor, College of Pharmacy, Washington State University Spokane College of Pharmacy, Washington State University Spokane , The authors indicate no relationships that could be perceived as a conflict of interest
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