Abstract:
BACKGROUND:The Intermountain Cystic Fibrosis Pediatric Center utilizes ticarcillin-clavulanate 400 mg/kg/d divided every 6 hours, (maximum 24 g/d). This dosing strategy is higher than the Food and Drug Administration (FDA)-approved package labeling. We evaluated the microbiologic efficacy of this dosing regimen. OBJECTIVES:The primary study objective was to predict the pharmacokinetic (PK) and pharmacodynamic (PD) MIC breakpoints (the highest MIC with a probability of target attainment [PTA] of at least 90%) for the bacteriostatic and bactericidal targets of ticarcillin activity against Pseudomonas aeruginosa using the study dosing regimen. A secondary objective was to evaluate the tolerability profile of the higher ticarcillin-clavulanate dosing regimen in children with cystic fibrosis (CF). METHODS:This was a population-based PK-PD modeling study of pediatric CF patients admitted from January 1, 2005 to December 31, 2009 who received the dosing regimen for at least 7 days. Population PK and PD models were used to estimate PK and PD parameters for 127 clinically evaluable patients. A 10,000-patient Monte Carlo simulation was performed to estimate the target time in which free drug concentrations exceeded the MIC of the infecting organism. The 2 PK-PD targets of microbiologic efficacy included ≥30% for bacteriostasis and ≥50% for bactericidal effects of ticarcillin-clavulanate at higher than FDA-approved doses. RESULTS:A total of 127 patients (age, 0-19 years) met inclusion criteria. Serum concentration levels were modeled in this patient population using published PK parameters with intermittent ticarcillin peak concentrations reaching 288 (93.4) mg/L. The model predicted the PTA of the MICs for P. aeruginosa with a near-maximal bactericidal PK-PD MIC breakpoint of 16 μg/mL and a bacteriostasis PK-PD MIC breakpoint of 32 μg/mL. CONCLUSIONS:The results of our simulation suggest that in this select pediatric population, higher than FDA-approved doses of ticarcillin-clavulanate were effective in achieving bactericidal effects among pseudomonal isolates with MICs <16 μg/mL. Bacteriostatic and bactericidal effects were not frequently achieved among P. aeruginosa isolates with MICs >32 μg/mL. Additional studies are warranted to determine the clinical effectiveness of this dosing regimen.
journal_name
Clin Therjournal_title
Clinical therapeuticsauthors
Zobell JT,Stockmann C,Young DC,Cash J,McDowell BJ,Korgenski K,Sherwin CM,Spigarelli M,Chatfield BA,Ampofo Kdoi
10.1016/j.clinthera.2011.09.010subject
Has Abstractpub_date
2011-11-01 00:00:00pages
1844-50issue
11eissn
0149-2918issn
1879-114Xpii
S0149-2918(11)00618-7journal_volume
33pub_type
杂志文章abstract:BACKGROUND:Therapeutic proteins have revolutionized the treatment of many diseases. In the near future, many more therapeutic proteins are likely to become available for an increasingly wide range of indications. OBJECTIVES:This article reviews the incidence, causes, and consequences of formation of antibodies to ther...
journal_title:Clinical therapeutics
pub_type: 杂志文章,评审
doi:10.1016/s0149-2918(02)80075-3
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,评审
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更新日期:1984-01-01 00:00:00
abstract:PURPOSE:The purpose of this study was to compare the bioavailability between 2 milk thistle-containing dietary supplements, Product B and IsaGenesis, in healthy volunteers. METHODS:Bioavailability between Product B, originally formulated as a powdered capsule, and IsaGenesis, reformulated as a soft gel, were compared ...
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abstract::Nonadherence to recommended pneumococcal conjugate vaccine (PCV) schedules may have implications for protection against pneumococcal disease. In this commentary, we have assessed adherence to the recommended dosing schedules (the completion of the primary PCV and booster series) in different European countries. We fou...
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journal_title:Clinical therapeutics
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:
更新日期:1992-01-01 00:00:00
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更新日期:2005-01-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1990-01-01 00:00:00
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更新日期:2020-10-01 00:00:00
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pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0149-2918(98)80054-4
更新日期:1998-05-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:1999-01-01 00:00:00
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doi:10.1016/j.clinthera.2015.07.015
更新日期:2015-09-01 00:00:00
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journal_title:Clinical therapeutics
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更新日期:2015-02-01 00:00:00
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更新日期:1997-03-01 00:00:00
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更新日期:2017-04-01 00:00:00
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更新日期:2020-01-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2008-06-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章,评审
doi:10.1016/j.clinthera.2017.09.011
更新日期:2017-11-01 00:00:00
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更新日期:2019-02-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:10.1016/j.clinthera.2011.09.006
更新日期:2011-11-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.clinthera.2007.01.012
更新日期:2007-01-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
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更新日期:2016-05-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:10.1016/j.clinthera.2014.04.013
更新日期:2014-06-01 00:00:00