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Peeters LEJ, Koch BCP, Versmissen J. Reply to 'optimizing treatment outcomes: integrating antihypertensive drug concentration measurement, personalized feedback, and psychosocial factors in resistant hypertension'. J Hypertens 2024; 42:1106-1107. [PMID: 38690910 DOI: 10.1097/hjh.0000000000003724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Affiliation(s)
- L E J Peeters
- Erasmus MC, Department of Hospital Pharmacy, University Medical Center Rotterdam
- Maasstad Hospital, Department of Hospital Pharmacy
| | - B C P Koch
- Erasmus MC, Department of Hospital Pharmacy, University Medical Center Rotterdam
| | - J Versmissen
- Erasmus MC, Department of Hospital Pharmacy, University Medical Center Rotterdam
- Erasmus MC, Department of Internal Medicine, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Muller AE, De Winter BCM, Koch BCP. Towards optimizing cefepime/tazobactam (WCK 4282) exposure to achieve efficacy against piperacillin/tazobactam-resistant ESBL infections: dose recommendations for various renal functions, including intermittent haemodialysis, in healthy individuals. J Antimicrob Chemother 2024; 79:1093-1100. [PMID: 38507250 DOI: 10.1093/jac/dkae076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 02/29/2024] [Indexed: 03/22/2024] Open
Abstract
OBJECTIVES WCK 4282 is a novel combination of cefepime 2 g and tazobactam 2 g being developed for the treatment of infections caused by piperacillin/tazobactam-resistant ESBL infections. The dosing regimen for cefepime/tazobactam needs to be optimized to generate adequate exposures to treat infections caused by ESBL-producing pathogens resistant to both cefepime and piperacillin/tazobactam. METHODS We developed pharmacokinetic population models of cefepime and tazobactam to evaluate the optimal dose adjustments in patients, including those with augmented renal clearance as well as various degrees of renal impairment, and also for those on intermittent haemodialysis. Optimal doses for various degrees of renal function were identified by determining the PTA for a range of MICs. To cover ESBL-producing pathogens with an cefepime/tazobactam MIC of 16 mg/L, a dosing regimen of 2 g q8h infused over 1.5 h resulted in a combined PTA of 99% for the mean murine 1 log10-kill target for the cefepime/tazobactam combination. RESULTS We found that to adjust for renal function, doses need to be reduced to 1 g q8h, 500 mg q8h and 500 mg q12h for patients with CLCR of 30-59, 15-29 and 8-14 mL/min (as well as patients with intermittent haemodialysis), respectively. In patients with high to augmented CLR (estimated CLCR 120-180 mL/min), a prolonged 4 h infusion of standard dose is required. CONCLUSIONS The suggested dosing regimens will result in exposures of cefepime and tazobactam that would be adequate for infections caused by ESBL-producing pathogens with a cefepime/tazobactam MICs up to 16 mg/L.
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Affiliation(s)
- Anouk E Muller
- Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, The Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), Rotterdam, The Netherlands
| | - Brenda C M De Winter
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
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Bezstarosti H, Van Lieshout EMM, Van den Hurk MJB, Kortram K, Oprel P, Koch BCP, Croughs PD, Verhofstad MHJ. In Vitro Elution of Gentamicin from CERAMENT® G Has an Antimicrobial Effect on Bacteria With Various Levels of Gentamicin Resistance Found in Fracture-related Infection. Clin Orthop Relat Res 2024; 482:885-891. [PMID: 38289704 PMCID: PMC11008629 DOI: 10.1097/corr.0000000000002975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 12/12/2023] [Indexed: 02/01/2024]
Abstract
BACKGROUND Fracture-related infection is a serious complication after trauma. CERAMENT® G combines dead-space management with local release of gentamicin in a single-stage procedure. Bacterial resistance against antibiotics is increasing. The local effect of CERAMENT® G on bacteria resistant to systemically administered gentamicin is unknown. QUESTIONS/PURPOSES (1) What is the in vitro elution pattern of gentamicin from CERAMENT® G using a full washout model? (2) What is the in vitro antimicrobial activity (zone of inhibition) of CERAMENT® G against bacterial isolates found in fracture-related infection with different susceptibility levels toward gentamicin? METHODS Elution of gentamicin from CERAMENT® G was determined in vitro over a period of 2 months. Elution experiments were performed in fivefold, with gentamicin being sampled in threefold at 19 different timepoints within 2 months. Antimicrobial activity was determined using the four most-frequently cultured bacterial species found in fracture-related infection: Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, and Enterobacter cloacae . For each of the species, four different isolates with a different susceptibility to gentamicin were used. According to the European Committee on Antimicrobial Susceptibility Testing, the susceptibility of each isolate was classified into four different groups: fully susceptible (minimum inhibitory concentration 0.064 to 4 mg/L), minimally resistant (minimum inhibitory concentration 4 to 16 mg/L), moderately resistant (minimum inhibitory concentration 8 to 96 mg/L), and highly resistant (minimum inhibitory concentration 24 to 1024 mg/L), depending on each organism. The antimicrobial activity of CERAMENT® G was determined according to the European Committee on Antimicrobial Susceptibility Testing disk protocol. The experiment was performed in fivefold for each isolate. The zone of inhibition was compared between each bacterial isolate and within each of the four separate species. Nonlinear regression statistics were calculated between the zone of interest and logarithmic minimum inhibitory concentration for each bacterial species. RESULTS After 24 hours, 95% of all available gentamicin was eluted, and gentamicin was still detectable after 2 months. CERAMENT® G showed antimicrobial activity against all bacterial species; only S taphylococcus aureus (with a minimum inhibitory concentration > 1024 mg/L) was not susceptible. The zone of interest of the different bacterial isolates was correlated with the logarithmic minimum inhibitory concentration. CONCLUSION CERAMENT® G offers a bone substitute capable of releasing high levels of gentamicin within a short period of time. This study shows that CERAMENT® G has antimicrobial activity against bacterial isolates that are resistant to gentamicin when systemically administered. This finding raises the question of whether European Committee on Antimicrobial Susceptibility Testing cutoff points for systemic application are useful for the use of local CERAMENT® G. Standardized experiments to determine local antibiotic antimicrobial activity in fracture-related infection treatment are needed to form guidelines for the use of local antibiotics and ultimately improve fracture-related infection treatment. CLINICAL RELEVANCE Local concentrations of gentamicin with CERAMENT® G are much higher than when systemically administered. It seems effective against certain bacterial strains that are not affected by systemically reachable concentrations of gentamicin. CERAMENT® G might still be effective when bacteria that are resistant to systemically administered concentrations of gentamicin are occulated from patients with fracture-related infection.
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Affiliation(s)
- Hans Bezstarosti
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Esther M. M. Van Lieshout
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Maartje J. B. Van den Hurk
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Kirsten Kortram
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Pim Oprel
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Birgit C. P. Koch
- Department of Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Peter D. Croughs
- Department of Medical Microbiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Michael H. J. Verhofstad
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
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Hermans RA, Gangapersad RN, Kloosterboer SM, van Schaik RHN, Hillegers MHJ, Koch BCP, de Winter BCM, Dierckx B. Exploring P-gp as moderator of side effects and effectiveness of risperidone in children and adolescents. Eur Neuropsychopharmacol 2024; 85:5-7. [PMID: 38643629 DOI: 10.1016/j.euroneuro.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/25/2024] [Accepted: 04/01/2024] [Indexed: 04/23/2024]
Affiliation(s)
- R A Hermans
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands.
| | - R N Gangapersad
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; Erasmus School of Economics, Erasmus University, Rotterdam, the Netherlands
| | - S M Kloosterboer
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - R H N van Schaik
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M H J Hillegers
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - B C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - B C M de Winter
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - B Dierckx
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
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Gangapersad RN, Zhou G, Garcia-Gomez P, Bos J, Hak E, Koch BCP, Schuiling-Veninga CCM, Dierckx B. Correction to: Comparison of antipsychotic drug use in children and adolescents in the Netherlands before and during the COVID-19 pandemic. Eur Child Adolesc Psychiatry 2024:10.1007/s00787-024-02434-6. [PMID: 38642119 DOI: 10.1007/s00787-024-02434-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/22/2024]
Affiliation(s)
- Ravish N Gangapersad
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.
- Erasmus School of Economics, Erasmus University, Rotterdam, The Netherlands.
| | - Guiling Zhou
- Unit of Pharmaco?Therapy, ?Epidemiology and ?Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Pilar Garcia-Gomez
- Erasmus School of Economics, Erasmus University, Rotterdam, The Netherlands
| | - Jens Bos
- Unit of Pharmaco?Therapy, ?Epidemiology and ?Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Eelko Hak
- Unit of Pharmaco?Therapy, ?Epidemiology and ?Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Catharina C M Schuiling-Veninga
- Unit of Pharmaco?Therapy, ?Epidemiology and ?Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Bram Dierckx
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center, Rotterdam, The Netherlands
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Rietveld PCS, Sassen SDT, Guchelaar NAD, van Eerden RAG, de Boer NL, van den Heuvel TBM, Burger JWA, Mathijssen RHJ, Koch BCP, Koolen SLW. Population pharmacokinetics of intraperitoneal irinotecan and SN-38 in patients with peritoneal metastases from colorectal origin. CPT Pharmacometrics Syst Pharmacol 2024. [PMID: 38634204 DOI: 10.1002/psp4.13136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/17/2024] [Accepted: 03/13/2024] [Indexed: 04/19/2024] Open
Abstract
Peritoneal metastases (PM) are common in patients with colorectal cancer. Patients with PM have a poor prognosis, and for those who are not eligible for cytoreductive surgery (CRS) with or without hyperthermic intraperitoneal chemotherapy (HIPEC), palliative chemotherapy is currently the only option. Recently, we conducted a phase I trial (INTERACT) in which irinotecan was administered intraperitoneally (IP) to 18 patients ineligible for CRS-HIPEC. The primary objective was to evaluate covariates influencing the PK profile of irinotecan and SN-38 after IP administration. Secondly, a population PK model was developed to support the further development of IP irinotecan by improving dosing in patients with PM. Patients were treated with IP irinotecan every 2 weeks in combination with systemic FOLFOX-bevacizumab. Irinotecan and SN-38 were measured in plasma (588 samples) and SN-38 was measured in peritoneal fluid (267 samples). Concentration-Time data were log-transformed and analyzed using NONMEM version 7.5 using FOCE+I estimation. An additive error model described the residual error, with inter-individual variability in PK parameters modeled exponentially. The final structural model consisted of five compartments. Weight was identified as a covariate influencing the SN-38 plasma volume of distribution and GGT was found to influence the SN-38 plasma clearance. This population PK model adequately described the irinotecan and SN-38 in plasma after IP administration, with weight and GGT as predictive factors. Irinotecan is converted intraperitoneal to SN-38 by carboxylesterases and the plasma bioavailability of irinotecan is low. This model will be used for the further clinical development of IP irinotecan by providing dosing strategies.
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Affiliation(s)
- Pascale C S Rietveld
- Department of Clinical Pharmacy, Erasmus MC, Rotterdam, The Netherlands
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Sebastiaan D T Sassen
- Department of Clinical Pharmacy, Erasmus MC, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Niels A D Guchelaar
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Ruben A G van Eerden
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Nadine L de Boer
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | | | | | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Clinical Pharmacy, Erasmus MC, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Stijn L W Koolen
- Department of Clinical Pharmacy, Erasmus MC, Rotterdam, The Netherlands
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
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Huygens S, Preijers T, Swaneveld FH, Kleine Budde I, GeurtsvanKessel CH, Koch BCP, Rijnders BJA. Dosing of Convalescent Plasma and Hyperimmune Anti-SARS-CoV-2 Immunoglobulins: A Phase I/II Dose-Finding Study. Clin Pharmacokinet 2024; 63:497-509. [PMID: 38427270 PMCID: PMC11052786 DOI: 10.1007/s40262-024-01351-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND AND OBJECTIVE During the COVID-19 pandemic, trials on convalescent plasma (ConvP) were performed without preceding dose-finding studies. This study aimed to assess potential protective dosing regimens by constructing a population pharmacokinetic (popPK) model describing anti-SARS-CoV-2 antibody titers following the administration of ConvP or hyperimmune globulins (COVIg). METHODS Immunocompromised patients, testing negative for anti-SARS-CoV-2 spike antibodies despite vaccination, received a range of anti-SARS-CoV-2 antibodies in the form of COVIg or ConvP infusion. The popPK analysis was performed using NONMEM v7.4. Monte Carlo simulations were performed to assess potential COVIg and ConvP dosing regimens for prevention of COVID-19. RESULTS Forty-four patients were enrolled, and data from 42 were used for constructing the popPK model. A two-compartment elimination model with mixed residual error best described the Nab-titers after administration. Inter-individual variation was associated to CL (44.3%), V1 (27.3%), and V2 (29.2%). Lean body weight and type of treatment (ConvP/COVIg) were associated with V1 and V2, respectively. Median elimination half-life was 20 days (interquartile range: 17-25 days). Simulations demonstrated that even monthly infusions of 600 mL of the ConvP or COVIg used in this trial would not achieve potentially protective serum antibody titers for > 90% of the time. However, as a result of hybrid immunity and/or repeated vaccination, plasma donors with extremely high antibody titers are now readily available, and a > 90% target attainment should be possible. CONCLUSION The results of this study may inform future intervention studies on the prophylactic and therapeutic use of antiviral antibodies in the form of ConvP or COVIg. CLINICAL TRIAL REGISTRATION NUMBER NL9379 (The Netherlands Trial Register).
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Affiliation(s)
- Sammy Huygens
- Department of Internal Medicine, Section of Infectious Diseases and Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Tim Preijers
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics group, Rotterdam, The Netherlands
| | - Francis H Swaneveld
- Unit of Transfusion Medicine, Sanquin Blood Supply Foundation, 1066 CX, Amsterdam, The Netherlands
| | - Ilona Kleine Budde
- Clinical Operations, Prothya Biosolutions, 1066 CX, Amsterdam, The Netherlands
| | - Corine H GeurtsvanKessel
- Department of Viroscience, Erasmus University Medical Center Rotterdam, WHO Collaborating Centre for Arbovirus and Viral Hemorrhagic Fever Reference and Research, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics group, Rotterdam, The Netherlands
| | - Bart J A Rijnders
- Department of Internal Medicine, Section of Infectious Diseases and Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands.
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Van Vyve L, Dierckx B, Lim CG, Danckaerts M, Koch BCP, Häge A, Banaschewski T. Pharmacotherapy for ADHD in children and adolescents: A summary and overview of different European guidelines. Eur J Pediatr 2024; 183:1047-1056. [PMID: 38095716 DOI: 10.1007/s00431-023-05370-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/27/2023] [Accepted: 12/05/2023] [Indexed: 01/27/2024]
Abstract
Attention deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by a persistent pattern of inattention, hyperactivity, and impulsivity. It is the most common neurodevelopmental disorder presenting to pediatric services, and pediatricians are often involved in the early assessment, diagnosis, and treatment of children with ADHD. The treatment of ADHD typically involves a multimodal approach that encompasses a combination of psychoeducation, parent/teacher training, psychosocial/psychotherapeutic interventions, and pharmacotherapy. Concerning pharmacotherapy, guidelines vary in drug choice and sequencing, with psychostimulants, such as methylphenidate and (lis)dexamfetamine, generally being the favored initial treatment. Alternatives include atomoxetine and guanfacine. Pharmacotherapy has been proven effective, but close follow-up focusing on physical growth, cardiovascular monitoring, and the surveillance of potential side effects including tics, mood fluctuations, and psychotic symptoms, is essential. This paper presents an overview of current pharmacological treatment options for ADHD and explores disparities in treatment guidelines across different European countries. Conclusion: Pharmacological treatment options for ADHD in children and adolescents are effective and generally well-tolerated. Pharmacotherapy for ADHD is always part of a multimodal approach. While there is a considerable consensus among European guidelines on pharmacotherapy for ADHD, notable differences exist, particularly concerning the selection and sequencing of various medications. What is Known: • There is a significant base of evidence for pharmacological treatment for ADHD in children and adolescents. • Pediatricians are often involved in assessment, diagnosis and management of children with ADHD. What is New: • Our overview of different European guidelines reveals significant agreement in the context of pharmacotherapy for ADHD in children and adolescents. • Discrepancies exist primarily in terms of selection and sequencing of different medications.
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Affiliation(s)
| | - B Dierckx
- Erasmus MC, Rotterdam, The Netherlands
| | - C G Lim
- Institute of Mental Health, Singapore, Singapore
| | | | | | - A Häge
- Zentralinstitut für Seelische Gesundheit, Mannheim, Germany
| | - T Banaschewski
- Zentralinstitut für Seelische Gesundheit, Mannheim, Germany
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9
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Van Vyve L, Dierckx B, Lim CG, Danckaerts M, Koch BCP, Häge A, Banaschewski T. Correction to: Pharmacotherapy for ADHD in children and adolescents: A summary and overview of different European guidelines. Eur J Pediatr 2024; 183:1057. [PMID: 38277002 DOI: 10.1007/s00431-024-05426-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Affiliation(s)
| | - B Dierckx
- Erasmus MC, Rotterdam, The Netherlands
| | - C G Lim
- Institute of Mental Health, Singapore, Singapore
| | | | | | - A Häge
- Zentralinstitut für Seelische Gesundheit, Mannheim, Germany
| | - T Banaschewski
- Zentralinstitut für Seelische Gesundheit, Mannheim, Germany
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Dräger S, Ewoldt TMJ, Abdulla A, Rietdijk WJR, Verkaik N, Ramakers C, de Jong E, Osthoff M, Koch BCP, Endeman H. Exploring the Impact of Model-Informed Precision Dosing on Procalcitonin Concentrations in Critically Ill Patients: A Secondary Analysis of the DOLPHIN Trial. Pharmaceutics 2024; 16:270. [PMID: 38399324 PMCID: PMC10891837 DOI: 10.3390/pharmaceutics16020270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/25/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Model-informed precision dosing (MIPD) might be used to optimize antibiotic treatment. Procalcitonin (PCT) is a biomarker for severity of infection and response to antibiotic treatment. The aim of this study was to assess the impact of MIPD on the course of PCT and to investigate the association of PCT with pharmacodynamic target (PDT) attainment in critically ill patients. This is a secondary analysis of the DOLPHIN trial, a multicentre, open-label, randomised controlled trial. Patients with a PCT value available at day 1 (T1), day 3 (T3), or day 5 (T5) after randomisation were included. The primary outcome was the absolute difference in PCT concentration at T1, T3, and T5 between the MIPD and the standard dosing group. In total, 662 PCT concentrations from 351 critically ill patients were analysed. There was no statistically significant difference in PCT concentration between the trial arms at T1, T3, or T5. The median PCT concentration was highest in patients who exceeded 10× PDT at T1 [13.15 ng/mL (IQR 5.43-22.75)]. In 28-day non-survivors and in patients that exceeded PDT at T1, PCT decreased significantly between T1 and T3, but plateaued between T3 and T5. PCT concentrations were not significantly different between patients receiving antibiotic treatment with or without MIPD guidance. The potential of PCT to guide antibiotic dosing merits further investigation.
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Affiliation(s)
- Sarah Dräger
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
- Department of Internal Medicine, University Hospital Basel, 4031 Basel, Switzerland
| | - Tim M. J. Ewoldt
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
- Department of Intensive Care Medicine, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands;
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
| | - Wim J. R. Rietdijk
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Institutional Affairs, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Nelianne Verkaik
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Christian Ramakers
- Department of Clinical Chemistry, Erasmus Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Evelien de Jong
- Department of Intensive Care, Rode Kruis Ziekenhuis, 1942 LE Beverwijk, The Netherlands
| | - Michael Osthoff
- Department of Internal Medicine, University Hospital Basel, 4031 Basel, Switzerland
| | - Birgit C. P. Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Medicine, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands;
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Edwina AE, Dreesen E, Hias J, Koch BCP, Van den Eede N, Pauwels S, Allegaert K, Van der Linden L, Spriet I, Tournoy J. Agreement Between a Colorimetric Assay and Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry for Quantifying Paracetamol Plasma Concentrations. AAPS J 2024; 26:23. [PMID: 38302833 DOI: 10.1208/s12248-024-00890-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/21/2023] [Indexed: 02/03/2024] Open
Abstract
Special populations, like geriatric patients, experience altered paracetamol pharmacokinetics (PK), complicating pain management. More PK research is essential to optimize paracetamol (acetaminophen) dosing. Yet, the reference method ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) is not readily available. Therefore, we aimed to evaluate the agreement between UPLC-MS/MS and the more accessible colorimetric Roche acetaminophen (ACETA) assay in quantifying paracetamol plasma concentrations, to facilitate PK studies and therapeutic drug monitoring for pain management. Patient data and plasma samples were obtained from a prospective study including geriatric patients admitted to the geriatric wards. ACETA and UPLC-MS/MS assays were performed in two separate laboratories. Bland-Altman plot and Passing-Bablok regression were used to assess agreement. Accuracy was evaluated using the McNemar test for a threshold value of 10 mg/L. Population PK modeling was employed to bridge PK data obtained from both methods (NONMEM 7.5). A total of 242 plasma sample pairs were available from 40 geriatric patients (age range, 80-95 years). Paracetamol plasma concentrations from ACETA (median 9.8 [interquartile range 6.1-14.4] mg/L) and UPLC-MS/MS (9.5 [6.2-14.8] mg/L) did not differ significantly (P > 0.05). No significant proportional nor additive bias was observed between both assay methods. The classification accuracy (at threshold 10 mg/L) was 85% (P = 0.414). The conversion factor between ACETA and UPLC-MS/MS was estimated at 1.06 (relative standard error 5%), yet with a 13.4% (relative standard error 23%) interindividual variability. ACETA assay showed no systematic bias in comparison with the UPLC-MS/MS assay in determining paracetamol exposure in geriatric blood samples despite the imprecision.
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Affiliation(s)
- Angela Elma Edwina
- Gerontology and Geriatrics, Department of Public Health and Primary Care, KU Leuven - University of Leuven, UZ Herestraat 49, Box 7003, 3000, Leuven, Belgium
| | - Erwin Dreesen
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven - University of Leuven, Leuven, Belgium
| | - Julie Hias
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven - University of Leuven, Leuven, Belgium
- Pharmacy Department, University Hospitals Leuven, Leuven, Belgium
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | | | - Karel Allegaert
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven - University of Leuven, Leuven, Belgium
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Development and Regeneration, KU Leuven - University of Leuven, Leuven, Belgium
| | - Lorenz Van der Linden
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven - University of Leuven, Leuven, Belgium
- Pharmacy Department, University Hospitals Leuven, Leuven, Belgium
| | - Isabel Spriet
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven - University of Leuven, Leuven, Belgium
- Pharmacy Department, University Hospitals Leuven, Leuven, Belgium
| | - Jos Tournoy
- Gerontology and Geriatrics, Department of Public Health and Primary Care, KU Leuven - University of Leuven, UZ Herestraat 49, Box 7003, 3000, Leuven, Belgium.
- Department of Geriatric Medicine, University Hospitals Leuven, Leuven, Belgium.
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12
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Bahmany S, Hassanzai M, Flint RB, van Onzenoort HAW, de Winter BCM, Koch BCP. Dried blood spot analysis for the quantification of vancomycin and creatinine using liquid chromatography - tandem mass spectrometry: Method development and validation. Clin Chim Acta 2024; 553:117689. [PMID: 38052384 DOI: 10.1016/j.cca.2023.117689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/07/2023]
Abstract
BACKGROUND Vancomycin is a widely used antibiotic for the treatment of gram-positive bacterial infections, especially for methicillin-resistant Staphylococcus aureus (MRSA) infections. Due to a small therapeutic range and large inter-patient variability, therapeutic drug monitoring (TDM) of vancomycin is required to minimize toxicity and maximize treatment efficacy. Venous blood sampling is mostly applied for TDM of vancomycin, although this widely used sampling method is more invasive compared to less painful alternatives, such as the dried blood spot (DBS) method, which can be performed at home. METHOD We developed an UPLC-MS/MS method for the quantification of vancomycin and creatinine in DBS. A fast sample preparation and short analysis run time of 5.2 min were applied, which makes this method highly suitable for clinical settings. Validation was performed according to international (FDA and EMA) guidelines. RESULTS The validated concentration range was found linear for creatinine from 41.8 µmol/L to 722 µmol/L and for vancomycin from 3.8 mg/L to 76.6 mg/L (r2 > 0.990) and the inaccuracies, imprecisions, hematocrit effects, and recoveries were < 15 % for both compounds. No significant carryover effect was observed. CONCLUSION Hence, we successfully validated a quantification method for the simultaneous determination of creatinine and vancomycin in DBS.
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Affiliation(s)
- Soma Bahmany
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands.
| | - Moska Hassanzai
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Robert B Flint
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Pediatric and Neonatal Intensive Care, Division of Neonatology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Hein A W van Onzenoort
- Department of Pharmacy, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, the Netherlands
| | - Brenda C M de Winter
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, the Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, the Netherlands
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13
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Gangapersad RN, Zhou G, Garcia-Gomez P, Bos J, Hak E, Koch BCP, Schuiling-Veninga CCM, Dierckx B. Comparison of antipsychotic drug use in children and adolescents in the Netherlands before and during the COVID-19 pandemic. Eur Child Adolesc Psychiatry 2024:10.1007/s00787-023-02340-3. [PMID: 38183460 DOI: 10.1007/s00787-023-02340-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 11/28/2023] [Indexed: 01/08/2024]
Abstract
This study aims to describe the patterns and trends in antipsychotic prescription among Dutch youth before and during the corona virus disease 2019 (COVID-19) pandemic (between 2017 and 2022). The study specifically aims to determine whether there has been an increase or decrease in antipsychotic prescription among this population, and whether there are any differences in prescription patterns among different age and sex groups. The study utilized the IADB database, which is a pharmacy prescription database containing dispensing data from approximately 120 community pharmacies in the Netherlands, to analyze the monthly prevalence and incidence rates of antipsychotic prescription among Dutch youth before and during the pandemic. The study also examined the prescribing patterns of the five most commonly used antipsychotics and conducted an autoregressive integrated moving average (ARIMA) analysis using data prior to the pandemic, to predict the expected prevalence rate during the pandemic. The prescription rate of antipsychotics for Dutch youth was slightly affected by the pandemic, with a monthly prevalence of 4.56 [4.50-4.62] per 1000 youths before COVID-19 pandemic and 4.64 [4.59-4.69] during the pandemic. A significant increase in prevalence was observed among adolescent girls aged 13-19 years. The monthly incidence rate remained stable overall, but rose for adolescent girls aged 13-19 years. Aripiprazole, and Quetiapine had higher monthly prevalence rates during the pandemic, while Risperidone and Pipamperon had lower rates. Similarly, the monthly incidence rates of Aripiprazole and Olanzapine went up, while Risperidone went down. Furthermore, the results from the ARIMA analysis revealed that despite the pandemic, the monthly prevalence rate of antipsychotic prescription was within expectation. The findings of this study suggest that there has been a moderate increase in antipsychotic prescription among Dutch youth during the COVID-19 pandemic, particularly in adolescent females aged 13-19 years. However, the study also suggests that factors beyond the pandemic may be contributing to the rise in antipsychotic prescription in Dutch youth.
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Affiliation(s)
- Ravish N Gangapersad
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.
- Erasmus School of Economics, Erasmus University Rotterdam, Rotterdam, The Netherlands.
| | - Guiling Zhou
- Unit of Pharmaco-Therapy, -Epidemiology and -Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Pilar Garcia-Gomez
- Erasmus School of Economics, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - Jens Bos
- Unit of Pharmaco-Therapy, -Epidemiology and -Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Eelko Hak
- Unit of Pharmaco-Therapy, -Epidemiology and -Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Catharina C M Schuiling-Veninga
- Unit of Pharmaco-Therapy, -Epidemiology and -Economics (PTEE), Department of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Bram Dierckx
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center, Rotterdam, The Netherlands
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Li L, Sassen S, Hunfeld N, Smeets T, Ewoldt T, van den Berg SAA, Koch BCP, Endeman H. Population pharmacokinetics of dexamethasone in critically ill COVID-19 patients: Does inflammation play a role? J Crit Care 2023; 78:154395. [PMID: 37542750 DOI: 10.1016/j.jcrc.2023.154395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/12/2023] [Accepted: 07/22/2023] [Indexed: 08/07/2023]
Abstract
PURPOSE The aim of this study is to design a population pharmacokinetic study to gain a deeper understanding of the pharmacokinetics of dexamethasone in critically ill COVID-19 patients in order to identify relevant covariates that can be used to personalize dosing regimens. METHODS Blood samples from critically ill patients receiving fixed-dose intravenous dexamethasone (6 mg/day) for the treatment of COVID-19 were sampled in a retrospective pilot study. The data were analyzed using Nonlinear Mixed Effects Modeling (NONMEM) software for population pharmacokinetic analysis and clinically relevant covariates were selected and evaluated. RESULTS A total of 51 dexamethasone samples from 18 patients were analyzed and a two-compartment model fit the data best. The mean population estimates were 2.85 L/h (inter-individual-variability 62.9%) for clearance, 15.4 L for the central volume of distribution, 12.3 L for the peripheral volume of distribution and 2.1 L/h for the inter-compartmental distribution clearance. The covariate analysis showed a significant negative correlation between dexamethasone clearance and CRP. CONCLUSIONS Dexamethasone PK parameters in ICU COVID patients were substantially different from those from non-ICU non-COVID patients, and inflammation may play an important role in dexamethasone exposure. This finding suggests that fixed-dose dexamethasone over several days may not be appropriate for ICU COVID patients.
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Affiliation(s)
- Letao Li
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands.
| | - Sebastiaan Sassen
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Nicole Hunfeld
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Tim Smeets
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Tim Ewoldt
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Sjoerd A A van den Berg
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Henrik Endeman
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
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15
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Peeters LEJ, van Gelder T, van Dijk L, Koch BCP, Versmissen J. Lessons learned from conducting a randomized controlled trial to improve non-adherence to antihypertensive drug treatment. Blood Press 2023; 32:2281316. [PMID: 38010821 DOI: 10.1080/08037051.2023.2281316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023]
Abstract
PURPOSE Hypertension significantly contributes to cardiovascular diseases and premature deaths. Effective treatment is crucial to reduce cardiovascular risks, but poor adherence to antihypertensive drugs is a major issue. Numerous studies attempted to investigate interventions for identifying non-adherence, but often failed to address the issue effectively. The RHYME-RCT trial sought to bridge this gap by measuring non-adherence by determining antihypertensive drug concentrations in blood through a dried blood spot (DBS) method in patients with resistant hypertension. This measurement was followed by personalized feedback to improve adherence. During the course of this trial several challenges emerged, including selection bias, the gatekeeper role of physicians, the Hawthorne effect and the role of randomization. AIM This communication aims to inform fellow researchers and clinicians of challenges that can arise when conducting clinical trials to improve adherence and offer insights for refining study designs to avoid these issues in forthcoming adherence studies.
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Affiliation(s)
- L E J Peeters
- Erasmus MC, University Medical Center Rotterdam, Department of Hospital Pharmacy, the Netherlands
- Erasmus MC, University Medical Center Rotterdam, Department of Internal Medicine, the Netherlands
| | - T van Gelder
- Erasmus MC, University Medical Center Rotterdam, Department of Hospital Pharmacy, the Netherlands
- Erasmus MC, University Medical Center Rotterdam, Department of Internal Medicine, the Netherlands
| | - L van Dijk
- Nivel, Netherlands Institute for Health Services Research, Department Healthcare from the Perspective of Patients, Clients and Citizens, Utrecht, the Netherlands
- University of Groningen, Department of PharmacoTherapy, -Epidemiology & -Economics (PTEE), Groningen Research Institute of Pharmacy, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands
| | - B C P Koch
- Erasmus MC, University Medical Center Rotterdam, Department of Internal Medicine, the Netherlands
| | - J Versmissen
- Erasmus MC, University Medical Center Rotterdam, Department of Hospital Pharmacy, the Netherlands
- Erasmus MC, University Medical Center Rotterdam, Department of Internal Medicine, the Netherlands
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16
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Keij FM, Schouwenburg S, Kornelisse RF, Preijers T, Mir F, Degraeuwe P, Stolk LM, van Driel A, Kenter S, van der Sluijs J, Heidema J, den Butter PCP, Reiss IKM, Allegaert K, Tramper-Stranders GA, Koch BCP, Flint RB. Oral and Intravenous Amoxicillin Dosing Recommendations in Neonates: A Pooled Population Pharmacokinetic Study. Clin Infect Dis 2023; 77:1595-1603. [PMID: 37757471 PMCID: PMC10686957 DOI: 10.1093/cid/ciad432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND There is a lack of evidence on oral amoxicillin pharmacokinetics and exposure in neonates with possible serious bacterial infection (pSBI). We aimed to describe amoxicillin disposition following oral and intravenous administration and to provide dosing recommendations for preterm and term neonates treated for pSBI. METHODS In this pooled-population pharmacokinetic study, 3 datasets were combined for nonlinear mixed-effects modeling. In order to evaluate amoxicillin exposure following oral and intravenous administration, pharmacokinetic profiles for different dosing regimens were simulated with the developed population pharmacokinetic model. A target of 50% time of the free fraction above the minimal inhibitory concentration (MIC) with an MICECOFF of 8 mg/L (to cover gram-negative bacteria such as Escherichia coli) was used. RESULTS The cohort consisted of 261 (79 oral, 182 intravenous) neonates with a median (range) gestational age of 35.8 weeks (range, 24.9-42.4) and bodyweight of 2.6 kg (range, 0.5-5). A 1-compartment model with first-order absorption best described amoxicillin pharmacokinetics. Clearance (L/h/kg) in neonates born after 30 weeks' gestation increased with increasing postnatal age (PNA day 10, 1.25-fold; PNA day 20, 1.43-fold vs PNA day 3). Oral bioavailability was 87%. We found that a twice-daily regimen of 50 mg/kg/day is superior to a 3- or 4-times daily schedule in the first week of life for both oral and intravenous administration. CONCLUSIONS This pooled population pharmacokinetic description of intravenous and oral amoxicillin in neonates provides age-specific dosing recommendations. We conclude that neonates treated with oral amoxicillin in the first weeks of life reach adequate amoxicillin levels following a twice-daily dosing regimen. Oral amoxicillin therapy could therefore be an adequate, cost-effective, and more patient-friendly alternative for neonates worldwide.
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Affiliation(s)
- Fleur M Keij
- Department of Paediatrics, Division of Neonatology, Erasmus University Medical Centre–Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Paediatrics, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - Stef Schouwenburg
- Department of Hospital Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - René F Kornelisse
- Department of Paediatrics, Division of Neonatology, Erasmus University Medical Centre–Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Tim Preijers
- Department of Hospital Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Fatima Mir
- Section of Paediatric Infectious Disease, Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Pieter Degraeuwe
- Department of Paediatrics, Division of Neonatology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Leo M Stolk
- Department of Clinical Pharmacy, Maastricht University Medical Centre, The Netherlands
| | - Arianne van Driel
- Department of Paediatrics, IJsselland Hospital, Capelle a/d IJssel, The Netherlands
| | - Sandra Kenter
- Department of Paediatrics, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - Jacqueline van der Sluijs
- Department of Paediatrics, Division of Neonatology, Maxima Medical Centre, Veldhoven, The Netherlands
| | - Jojanneke Heidema
- Department of Paediatrics, St. Antonius Hospital, Nieuwegein, The Netherlands
| | | | - Irwin K M Reiss
- Department of Paediatrics, Division of Neonatology, Erasmus University Medical Centre–Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Karel Allegaert
- Department of Hospital Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Gerdien A Tramper-Stranders
- Department of Paediatrics, Division of Neonatology, Erasmus University Medical Centre–Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Paediatrics, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Robert B Flint
- Department of Paediatrics, Division of Neonatology, Erasmus University Medical Centre–Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
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17
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Wieringa A, Ewoldt TMJ, Gangapersad RN, Gijsen M, Parolya N, Kats CJAR, Spriet I, Endeman H, Haringman JJ, van Hest RM, Koch BCP, Abdulla A. Predicting Beta-Lactam Target Non-Attainment in ICU Patients at Treatment Initiation: Development and External Validation of Three Novel (Machine Learning) Models. Antibiotics (Basel) 2023; 12:1674. [PMID: 38136709 PMCID: PMC10740552 DOI: 10.3390/antibiotics12121674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
In the intensive care unit (ICU), infection-related mortality is high. Although adequate antibiotic treatment is essential in infections, beta-lactam target non-attainment occurs in up to 45% of ICU patients, which is associated with a lower likelihood of clinical success. To optimize antibiotic treatment, we aimed to develop beta-lactam target non-attainment prediction models in ICU patients. Patients from two multicenter studies were included, with intravenous intermittent beta-lactam antibiotics administered and blood samples drawn within 12-36 h after antibiotic initiation. Beta-lactam target non-attainment models were developed and validated using random forest (RF), logistic regression (LR), and naïve Bayes (NB) models from 376 patients. External validation was performed on 150 ICU patients. We assessed performance by measuring discrimination, calibration, and net benefit at the default threshold probability of 0.20. Age, sex, serum creatinine, and type of beta-lactam antibiotic were found to be predictive of beta-lactam target non-attainment. In the external validation, the RF, LR, and NB models confirmed good discrimination with an area under the curve of 0.79 [95% CI 0.72-0.86], 0.80 [95% CI 0.73-0.87], and 0.75 [95% CI 0.67-0.82], respectively, and net benefit in the RF and LR models. We developed prediction models for beta-lactam target non-attainment within 12-36 h after antibiotic initiation in ICU patients. These online-accessible models use readily available patient variables and help optimize antibiotic treatment. The RF and LR models showed the best performance among the three models tested.
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Affiliation(s)
- André Wieringa
- Department of Hospital Pharmacy, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.M.J.E.); (R.N.G.); (B.C.P.K.); (A.A.)
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
- Department of Clinical Pharmacy, Isala Hospital, Dr. van Heesweg 2, 8025 AB Zwolle, The Netherlands
| | - Tim M. J. Ewoldt
- Department of Hospital Pharmacy, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.M.J.E.); (R.N.G.); (B.C.P.K.); (A.A.)
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
- Department of Intensive Care, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands;
| | - Ravish N. Gangapersad
- Department of Hospital Pharmacy, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.M.J.E.); (R.N.G.); (B.C.P.K.); (A.A.)
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Matthias Gijsen
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, 3000 Leuven, Belgium; (M.G.); (I.S.)
- Pharmacy Department, UZ Leuven, 3000 Leuven, Belgium
| | - Nestor Parolya
- Delft Institute of Applied Mathematics, Mekelweg 4, 2628 CD Delft, The Netherlands;
| | - Chantal J. A. R. Kats
- Department of Hospital Pharmacy, Haaglanden Medical Center, Lijnbaan 32, 2512 VA The Hague, The Netherlands;
| | - Isabel Spriet
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, 3000 Leuven, Belgium; (M.G.); (I.S.)
- Pharmacy Department, UZ Leuven, 3000 Leuven, Belgium
| | - Henrik Endeman
- Department of Intensive Care, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands;
| | - Jasper J. Haringman
- Department of Intensive Care, Isala Hospital, Dr. van Heesweg 2, 8025 AB Zwolle, The Netherlands;
| | - Reinier M. van Hest
- Department of Pharmacy and Clinical Pharmacology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands;
| | - Birgit C. P. Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.M.J.E.); (R.N.G.); (B.C.P.K.); (A.A.)
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.M.J.E.); (R.N.G.); (B.C.P.K.); (A.A.)
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
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18
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Smeets TJL, de Geus HRH, Valkenburg AJ, Baidjoe L, Gommers DAMPJ, Koch BCP, Hunfeld NGM, Endeman H. The Clearance of Midazolam and Metabolites during Continuous Renal Replacement Therapy in Critically Ill Patients with COVID-19. Blood Purif 2023; 53:107-113. [PMID: 37926072 PMCID: PMC10836747 DOI: 10.1159/000534538] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/29/2023] [Indexed: 11/07/2023]
Abstract
INTRODUCTION Midazolam-based continuous intravenous sedation in patients admitted to the intensive care unit (ICU) was a necessity during the COVID-19 pandemic. However, benzodiazepine-based sedation is associated with a high incidence of benzodiazepine-related delirium and additional days on mechanical ventilation. Due to the requirement of high midazolam doses in combination with the impaired renal clearance (CL) of the pharmacological active metabolite 1-OH-midazolam-glucuronide (10% compared to midazolam), ICU patients with COVID-19 and continuous renal replacement therapy (CRRT) were at risk of unintended prolonged sedation. Several CRRT-related factors may have influenced the delivered CL of midazolam and its metabolites. Therefore, the aim of the study was to identify and describe these CRRT-related factors. METHODS Pre-filter blood samples and ultrafiltrate samples were collected simultaneously. Midazolam, 1-OH-midazolam, and 1-OH-midazolam-glucuronide plasma samples were analyzed using an UPLC-MS/MS method. The prescribed CRRT dose was corrected for downtime and filter integrity using the urea ratio (urea concentration in effluent/urea concentration plasma). CL of midazolam and its metabolites were calculated with the delivered CRRT dose (corrected for downtime and saturation coefficient [SD]). RESULTS Three patients on continuous venovenous hemodialysis (CVVHD) and 2 patients on continuous venovenous hemodiafiltration (CVVHDF) were included. Midazolam, 1-OH-midazolam, and 1-OH-midazolam-glucuronide concentrations were 2,849 (0-6,700) μg/L, 153 (0-295) μg/L, and 27,297 (1,727-39,000) μg/L, respectively. The SD was 0.03 (0.02-0.03) for midazolam, 0.05 (0.05-0.06) for 1-OH-midazolam, and 0.33 (0.23-0.43) for 1-OH-midazolam-glucuronide. The delivered CRRT CL was 1.4 (0-1.7) mL/min for midazolam, 2.7 (0-3.5) mL/min for 1-OH-midazolam, and 15.7 (4.0-27.7) mL/min for 1-OH-midazolam-glucuronide. CONCLUSIONS Midazolam and 1-OH-midazolam were not removed during CVVHD and CVVHDF. However, 1-OH-midazolam-glucuronide was removed reasonably, approximately up to 43%. CRRT modality, filter integrity, and downtime affect this removal. These data imply a personalized titration of midazolam in critically ill patients with renal failure and awareness for the additional sedative effects of its active metabolites.
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Affiliation(s)
- Tim J L Smeets
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Hilde R H de Geus
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Abraham J Valkenburg
- Department of Anesthesiology and Intensive Care, Isala Hospital, Zwolle, The Netherlands
| | - Lauren Baidjoe
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Diederik A M P J Gommers
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Nicole G M Hunfeld
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
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Agema BC, Buck SAJ, Viskil M, Isebia KT, de Neijs MJ, Sassen SDT, Koch BCP, Joerger M, de Wit R, Koolen SLW, Mathijssen RHJ. Early Identification of Patients at Risk of Cabazitaxel-induced Severe Neutropenia. Eur Urol Oncol 2023:S2588-9311(23)00231-6. [PMID: 37925350 DOI: 10.1016/j.euo.2023.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/14/2023] [Accepted: 10/20/2023] [Indexed: 11/06/2023]
Abstract
BACKGROUND Cabazitaxel frequently causes severe neutropenia. A higher cabazitaxel systemic exposure is related to a lower nadir absolute neutrophil count (ANC). OBJECTIVE To describe the effect of cabazitaxel systemic exposure on ANC by a population pharmacokinetic/pharmacodynamic (POP-PK/PD) model, and to identify patients at risk of severe neutropenia early in their treatment course using a PK threshold. DESIGN, SETTING, AND PARTICIPANTS Data from five clinical studies were pooled to develop a POP-PK/PD model using NONMEM, linking both patient characteristics and cabazitaxel systemic exposure directly to ANC. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS A PK threshold, predictive of severe neutropenia (grade ≥3), was determined using a receiver operating characteristic curve. RESULTS AND LIMITATIONS Ninety-six patients were included with a total of 1726 PK samples and 1081 ANCs. The POP-PK/PD model described both cabazitaxel PK and ANC accurately. A cabazitaxel plasma concentration of >4.96 ng/ml at 6 h after the start of infusion was found to be predictive of severe neutropenia, with a sensitivity of 76% and a specificity of 65%. CONCLUSIONS Early cabazitaxel plasma levels are predictive of severe neutropenia. Implementation of the proposed PK threshold results in early identification of almost 76% of all severe neutropenias. If prospectively validated, patients at risk could benefit from prophylactic administration of granulocyte colony stimulating factors, preventing severe neutropenia in an early phase of treatment. Implementation of this threshold permits a less restricted use of the 25 mg/m2 dose, potentially increasing the therapeutic benefit. PATIENT SUMMARY Treatment with cabazitaxel chemotherapy often causes neutropenia, leading to susceptibility to infections, which might be life threatening. We found that a systemic cabazitaxel concentration above 4.96 ng/ml 6 h after the start of infusion is predictive of the occurrence of severe neutropenia. Measurement of systemic cabazitaxel levels provides clinicians with the opportunity to prophylactically stimulate neutrophil growth.
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Affiliation(s)
- Bram C Agema
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands; Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Stefan A J Buck
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Mano Viskil
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Khrystany T Isebia
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Micha J de Neijs
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Sebastiaan D T Sassen
- Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands; Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands; Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Markus Joerger
- Department of Medical Oncology and Hematology, Cantonal Hospital, St. Gallen, Switzerland
| | - Ronald de Wit
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
| | - Stijn L W Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands; Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ron H J Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands
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20
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Hermans RA, Sassen SDT, Kloosterboer SM, Reichart CG, Kouijzer MEJ, de Kroon MMJ, Bastiaansen D, van Altena D, van Schaik RHN, Nasserinejad K, Hillegers MHJ, Koch BCP, Dierckx B, de Winter BCM. Towards precision dosing of aripiprazole in children and adolescents with autism spectrum disorder: Linking blood levels to weight gain and effectiveness. Br J Clin Pharmacol 2023; 89:3026-3036. [PMID: 37222228 DOI: 10.1111/bcp.15800] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 04/07/2023] [Accepted: 05/04/2023] [Indexed: 05/25/2023] Open
Abstract
AIMS Aripiprazole is one of the most commonly prescribed antipsychotic drugs to children and adolescents worldwide, but it is associated with serious side-effects, including weight gain. This study assessed the population pharmacokinetics of aripiprazole and its active metabolite and investigated the relationship between pharmacokinetic parameters and body mass index (BMI) in children and adolescents with autism spectrum disorder (ASD) and behavioural problems. Secondary outcomes were metabolic, endocrine, extrapyramidal and cardiac side-effects and drug effectiveness. METHODS Twenty-four children and adolescents (15 males, 9 females) aged 6-18 years were included in a 24-week prospective observational trial. Drug plasma concentrations, side-effects and drug effectiveness were measured at several time points during follow-up. Relevant pharmacokinetic covariates, including CYP2D6, CYP3A4, CYP3A5 and P-glycoprotein (ABCB1) genotypes, were determined. Nonlinear mixed-effects modelling (NONMEM®) was used for a population pharmacokinetic analysis with 92 aripiprazole and 91 dehydro-aripiprazole concentrations. Subsequently, model-based trough concentrations, maximum concentrations and 24-h area under the curves (AUCs) were analysed to predict outcomes using generalized and linear mixed-effects models. RESULTS For both aripiprazole and dehydro-aripiprazole, one-compartment models best described the measured concentrations, with albumin and BMI as significant covariates. Of all the pharmacokinetic parameters, higher sum (aripiprazole plus dehydro-aripiprazole) trough concentrations best predicted higher BMI z-scores (P < .001) and higher Hb1Ac levels (P = .03) during follow-up. No significant association was found between sum concentrations and effectiveness. CONCLUSIONS Our results indicate a threshold with regard to safety, which suggests that therapeutic drug monitoring of aripiprazole could potentially increase safety in children and adolescents with ASD and behavioural problems.
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Affiliation(s)
- Rebecca A Hermans
- Department of Hospital Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center, Rotterdam, the Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sebastiaan D T Sassen
- Department of Hospital Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sanne Maartje Kloosterboer
- Department of Hospital Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center, Rotterdam, the Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Catrien G Reichart
- LUMC-Curium Child and Adolescent Psychiatry, Leiden University Medical Center, Oegstgeest, The Netherlands
| | | | | | | | | | - Ron H N van Schaik
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Kazem Nasserinejad
- Department of Hematology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Manon H J Hillegers
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Bram Dierckx
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Brenda C M de Winter
- Department of Hospital Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Erasmus Medical Center, Rotterdam, The Netherlands
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21
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Ewoldt TMJ, Abdulla A, Rietdijk WJR, Hunfeld N, Muller AE, Endeman H, Koch BCP. Which patients benefit from model-informed precision dosing of beta-lactam antibiotics and ciprofloxacin at the ICU? Int J Antimicrob Agents 2023; 62:106931. [PMID: 37482257 DOI: 10.1016/j.ijantimicag.2023.106931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/26/2023] [Accepted: 07/15/2023] [Indexed: 07/25/2023]
Abstract
OBJECTIVES Antibiotic dosing is not optimal in the ICU. Our recent trial investigated the effect of model-informed precision dosing (MIPD) of beta-lactam antibiotics and ciprofloxacin and showed no significant differences in clinical outcomes in all patients. This study aimed to identify subgroups of patients in which the MIPD of these antibiotics could be beneficial for clinical outcomes. METHODS We analysed data from the DOLPHIN randomized controlled trial, which compared MIPD to standard dosing of beta-lactam antibiotics and ciprofloxacin in 388 ICU patients. We divided patients into subgroups based on baseline characteristics and assessed the effect of MIPD on 28-day mortality, 6-month mortality, change in sequential organ failure assessment (delta-SOFA), and ICU length of stay (LOS). RESULTS We found a lower 28-day mortality in patients with a SOFA below 8 randomized to MIPD (OR 0.40; 95% CI 0.17-0.88). However, patients with a higher SOFA show an increased 28-day mortality (OR 1.94; 95% CI 1.07-3.59) in the MIPD group. ICU LOS was increased in patients receiving MIPD with a SOFA below 8 (IRR 1.36; 95% CI 1.01-1.83) and those receiving MIPD for ceftriaxone (IRR 1.76; 95% CI 1.24-2.51). Patients receiving a dose recommendation within 24 hours show a trend towards decreased ICU LOS (IRR 0.77; 95% CI 0.52-1.16) and higher delta-SOFA (estimate -1.19; 95% CI -2.98-0.60). CONCLUSIONS ICU patients with a SOFA below 8 using MIPD had an increased ICU LOS but a lower 28-day mortality. Fast dose recommendations using MIPD of beta-lactam antibiotics and ciprofloxacin needs to be investigated in ICU patients.
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Affiliation(s)
- Tim M J Ewoldt
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands; Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands.
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands; Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Wim J R Rietdijk
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Nicole Hunfeld
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Anouk E Muller
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands; Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands; Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
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22
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van der Drift D, Simoons M, Koch BCP, Brufau G, Bindels P, Matic M, van Schaik RHN. Implementation of Pharmacogenetics in First-Line Care: Evaluation of Its Use by General Practitioners. Genes (Basel) 2023; 14:1841. [PMID: 37895189 PMCID: PMC10606701 DOI: 10.3390/genes14101841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/16/2023] [Accepted: 09/20/2023] [Indexed: 10/29/2023] Open
Abstract
Pharmacogenetics (PGx) can explain/predict drug therapy outcomes. There is, however, unclarity about the use and usefulness of PGx in primary care. In this study, we investigated PGx tests ordered by general practitioners (GPs) in 2021 at Dept. Clinical Chemistry, Erasmus MC, and analyzed the gene tests ordered, drugs/drug groups, reasons for testing and single-gene versus panel testing. Additionally, a survey was sent to 90 GPs asking about their experiences and barriers to implementing PGx. In total, 1206 patients and 6300 PGx tests were requested by GPs. CYP2C19 was requested most frequently (17%), and clopidogrel was the most commonly indicated drug (23%). Regarding drug groups, antidepressants (51%) were the main driver for requesting PGx, followed by antihypertensives (26%). Side effects (79%) and non-response (27%) were the main indicators. Panel testing was preferred over single-gene testing. The survey revealed knowledge on when and how to use PGx as one of the main barriers. In conclusion, PGx is currently used by GPs in clinical practice in the Netherlands. Side effects are the main reason for testing, which mostly involves antidepressants. Lack of knowledge is indicated as a major barrier, indicating the need for more education on PGx for GPs.
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Affiliation(s)
- Denise van der Drift
- Department of Clinical Chemistry, Erasmus MC University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Mirjam Simoons
- Department of Hospital Pharmacy, Erasmus MC University Medical Center, 3015 CN Rotterdam, The Netherlands
| | - Birgit C. P. Koch
- Department of Hospital Pharmacy, Erasmus MC University Medical Center, 3015 CN Rotterdam, The Netherlands
| | - Gemma Brufau
- Department of Clinical Chemistry, Erasmus MC University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Clinical Chemistry, Result Laboratory, 3318 AT Dordrecht, The Netherlands
| | - Patrick Bindels
- Department of General Practice, Erasmus MC University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Maja Matic
- Department of Clinical Chemistry, Erasmus MC University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Ron H. N. van Schaik
- Department of Clinical Chemistry, Erasmus MC University Medical Center, 3015 GD Rotterdam, The Netherlands
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23
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Rietdijk WJR, Dräger S, Endeman H, Koch BCP. Beta-lactam Therapeutic Drug Monitoring in Critically ill Patients: Learnings for Future Research. Clin Infect Dis 2023; 77:663-664. [PMID: 37040603 DOI: 10.1093/cid/ciad215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 04/06/2023] [Indexed: 04/13/2023] Open
Affiliation(s)
- Wim J R Rietdijk
- Department of Hospital Pharmacy, Erasmus MC, Rotterdam, The Netherlands
| | - Sarah Dräger
- Department of Hospital Pharmacy, Erasmus MC, Rotterdam, The Netherlands
- Division of Internal Medicine, University Hospital Basel, Basel, Switzerland
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care, Erasmus MC, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus MC, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
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24
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Muller AE, van Vliet P, Koch BCP. Clinical Experience with Off-Label Intrathecal Administration of Selected Antibiotics in Adults: An Overview with Pharmacometric Considerations. Antibiotics (Basel) 2023; 12:1291. [PMID: 37627711 PMCID: PMC10451962 DOI: 10.3390/antibiotics12081291] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Drain-associated intracerebral infections are life-threatening emergencies. Their treatment is challenging due to the limited penetration of antibiotics to the site of infection, resulting in potentially inadequate exposure. The emergence of multidrug-resistant pathogens might force the use of off-label intrathecal (IT) doses of antibiotics. We reviewed the literature on general aspects determining intrathecal dosing regimen, using pharmacometric knowledge. We summarised clinical experience with IT doses of antibiotics that are usually not used intrathecally, as well as the outcome of the cases and concentrations reached in the cerebrospinal fluid (CSF). Factors determining the IT regimen are the size of the ventricle system and the CSF drainage volume. With regard to pharmacometrics, pharmacokinetic/pharmacodynamic indices are likely similar to those in non-cerebral infections. The following number (N) of cases were described: benzylpenicillin (>50), ampicillin (1), ceftazidime (2), cephaloridine (56), ceftriaxone (1), cefotiam (1), meropenem (57), linezolid (1), tigecycline (15), rifampicin (3), levofloxacin (2), chloramphenicol (3) and daptomycin (8). Many side effects were reported for benzylpenicillin in the 1940-50s, but for the other antibiotics, when administered correctly, all side effects were minor and reversible. These data might help when choosing an IT dosing regimen in case there is no alternative option due to antimicrobial resistance.
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Affiliation(s)
- Anouk E. Muller
- Department of Medical Microbiology, Haaglanden Medisch Centrum, 2512 VA The Hague, The Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands;
| | - Peter van Vliet
- Department of Intensive Care Medicine, Haaglanden Medisch Centrum, 2512 VA The Hague, The Netherlands;
| | - Birgit C. P. Koch
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands;
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
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25
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Sylva M, Sassen SD, In 't Veld YL, de Jonge RC, Bartelds B, de Hoog M, Koch BCP, Kammeraad J. Serum Ivabradine Associates With Heart Rate Reduction But Enteral Exposure Is Unpredictable in Post surgical JET. JACC Clin Electrophysiol 2023; 9:1821-1823. [PMID: 37480859 DOI: 10.1016/j.jacep.2023.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 05/09/2023] [Accepted: 05/15/2023] [Indexed: 07/24/2023]
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26
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van Driel AA, Muller AE, Wijma RA, Stobberingh EE, Verbon A, Koch BCP. Nitrofurantoin for the treatment of uncomplicated urinary tract infection in female patients: the impact of dosing regimen, age, and renal function on drug exposure. Eur J Clin Pharmacol 2023; 79:1043-1049. [PMID: 37266591 PMCID: PMC10361848 DOI: 10.1007/s00228-023-03507-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 05/08/2023] [Indexed: 06/03/2023]
Abstract
PURPOSE The aim of this study is to determine nitrofurantoin exposure in female patients with different age and renal function with complaints of an uncomplicated UTI. Also the nitrofurantoin exposure in relation to the dosage regimen will be studied. METHODS Eight general practitioners (GP) participated in the study and included 38 patients with symptoms of an uncomplicated UTI, treated either with a dose of 50 mg q6h or 100 mg q12h, upon the discretion of the GP. Nitrofurantoin exposure was quantified in the patient's 24-h urine samples by UHPLC-UV and the area under the curve was calculated. RESULTS The 38 patients provided a range of 2-17 urine samples. The urine nitrofurantoin exposure was 1028 mg h/L for the patients receiving 50 mg q6h and 1036 mg h/L for those treated with 100 mg q12h (p = 0.97) and was not affected by age and eGFR (p = 0.64 and p = 0.34, respectively). CONCLUSION The data obtained do not support the discouragement of nitrofurantoin use in the elderly and in patients with impaired renal function. Since only a small number of patients were included, a larger study with more patients is warranted to evaluate nitrofurantoin exposure and adverse effects.
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Affiliation(s)
- A A van Driel
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Centre, Dr. Molewaterplein 40, 3015, Rotterdam, The Netherlands.
| | - A E Muller
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Centre, Dr. Molewaterplein 40, 3015, Rotterdam, The Netherlands
- Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), Rotterdam, The Netherlands
| | - R A Wijma
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Centre, Dr. Molewaterplein 40, 3015, Rotterdam, The Netherlands
| | - E E Stobberingh
- Department Infectious Disease Control, Municipal Public Health Service Rotterdam-Rijnmond (GGD Rotterdam), Rotterdam, The Netherlands
| | - A Verbon
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Centre, Dr. Molewaterplein 40, 3015, Rotterdam, The Netherlands
| | - B C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), Rotterdam, The Netherlands
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Ketharanathan N, Lili A, de Vries JMP, Wildschut ED, de Hoog M, Koch BCP, de Winter BCM. A Population Pharmacokinetic Model of Pentobarbital for Children with Status Epilepticus and Severe Traumatic Brain Injury. Clin Pharmacokinet 2023; 62:1011-1022. [PMID: 37247187 PMCID: PMC10338388 DOI: 10.1007/s40262-023-01249-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2023] [Indexed: 05/30/2023]
Abstract
BACKGROUND Pentobarbital pharmacokinetics (PK) remain elusive and the therapeutic windows narrow. Administration is frequent in critically ill children with refractory status epilepticus (SE) and severe traumatic brain injury (sTBI). OBJECTIVES To investigate pentobarbital PK in SE and sTBI patients admitted to the paediatric intensive care unit (PICU) with population-based PK (PopPK) modelling and dosing simulations. METHODS Develop a PopPK model with non-linear mixed-effects modelling (NONMEM®) with retrospective data (n = 36; median age 1.3 years; median weight 10 kg; 178 blood samples) treated with continuous intravenous pentobarbital. An independent dataset was used for external validation (n = 9). Dosing simulations with the validated model evaluated dosing regimens. RESULTS A one-compartment PK model with allometrically scaled weight on clearance (CL; 0.75) and volume of distribution (Vd; 1) captured data well. Typical CL and Vd values were 3.59 L/70 kg/h and 142 L/70 kg, respectively. Elevated creatinine and C-reactive protein (CRP) levels significantly correlated to decreased CL, explaining 84% of inter-patient variability, and were incorporated in the final model. External validation using stratified visual predictive checks showed good results. Simulations demonstrated patients with elevated serum creatinine and CRP failed to achieve steady state yet progressed to toxic levels with current dosing regimens. CONCLUSIONS The one-compartment PK model of intravenous pentobarbital described data well whereby serum creatinine and CRP significantly correlated with pentobarbital CL. Dosing simulations formulated adjusted dosing advice in patients with elevated creatinine and/or CRP. Prospective PK studies with pharmacodynamic endpoints, are imperative to optimise pentobarbital dosing in terms of safety and clinical efficacy in critically ill children.
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Affiliation(s)
- Naomi Ketharanathan
- Department of Neonatal and Paediatric Intensive Care, Division of Paediatric Intensive Care, Erasmus MC-Sophia Children's Hospital, Room Sp-3435, Wytemaweg 80, 3015GD, Rotterdam, The Netherlands.
| | - Anastasia Lili
- Rotterdam Clinical Pharmacometrics Group, Erasmus MC, Rotterdam, The Netherlands
| | | | - Enno D Wildschut
- Department of Neonatal and Paediatric Intensive Care, Division of Paediatric Intensive Care, Erasmus MC-Sophia Children's Hospital, Room Sp-3435, Wytemaweg 80, 3015GD, Rotterdam, The Netherlands
| | - Matthijs de Hoog
- Department of Neonatal and Paediatric Intensive Care, Division of Paediatric Intensive Care, Erasmus MC-Sophia Children's Hospital, Room Sp-3435, Wytemaweg 80, 3015GD, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Rotterdam Clinical Pharmacometrics Group, Erasmus MC, Rotterdam, The Netherlands
| | - Brenda C M de Winter
- Rotterdam Clinical Pharmacometrics Group, Erasmus MC, Rotterdam, The Netherlands
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Liang J, Ringeling LT, Hermans RA, Bayraktar I, Bosch TM, Egberts KM, Kloosterboer SM, de Winter B, Dierckx B, Koch BCP. Clinical pharmacokinetics of antipsychotics in pediatric populations: a scoping review focusing on dosing regimen. Expert Opin Drug Metab Toxicol 2023; 19:501-509. [PMID: 37668177 DOI: 10.1080/17425255.2023.2252340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/01/2023] [Accepted: 08/10/2023] [Indexed: 09/06/2023]
Abstract
INTRODUCTION Achieving optimal clinical responses and minimizing side effects through precision dosing of antipsychotics in children and adolescents with psychiatric disorders remains a challenge. Identifying patient characteristics (covariates) that affect pharmacokinetics can inform more effective dosing strategies and ultimately improve patient outcomes. This review aims to provide greater insight into the impact of covariates on the clinical pharmacokinetics of antipsychotics in pediatric populations. AREAS COVERED A comprehensive literature search was conducted, and the main findings regarding the effects of the covariates on the pharmacokinetics of antipsychotics in children and adolescents are presented. EXPERT OPINION Our study highlights significant covariates, including age, sex, weight, CYP2D6 phenotype, co-medication, and smoking habits, which affect the pharmacokinetics of antipsychotics. However, the findings were generally limited by the small sample sizes of naturalistic, open-label, observational studies, and the homogeneous subgroups. Dosing based on weight and preemptive genotyping could prove beneficial for optimizing the dosing regimen in pediatric populations. Future research is needed to refine dosing recommendations and establish therapeutic reference ranges critical for precision dosing and Therapeutic Drug Monitoring (TDM). The integration of individual patient characteristics with TDM can further optimize the efficacy and safety of antipsychotics for each patient.
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Affiliation(s)
- Jiayi Liang
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Maasstad Hospital, Rotterdam, the Netherlands
| | - Lisa T Ringeling
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Rebecca A Hermans
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Izgi Bayraktar
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Tessa M Bosch
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Maasstad Hospital, Rotterdam, the Netherlands
- Department of Clinical Pharmacology & Toxicology, Maasstad Lab, Maasstad Hospital, Rotterdam, the Netherlands
| | - Karin M Egberts
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital Würzburg, Würzburg, Germany
| | - Sanne M Kloosterboer
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Brenda de Winter
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Bram Dierckx
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Birgit C P Koch
- Rotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
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Smeets TJL, de Geus HRH, Rietveld A, Rietdijk WJR, Koch BCP, Endeman H, Hunfeld NGM. Pursuing the Real Vancomycin Clearance during Continuous Renal Replacement Therapy in Intensive Care Unit Patients: Is There Adequate Target Attainment? Blood Purif 2023; 52:652-659. [PMID: 37311418 DOI: 10.1159/000530815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 04/24/2023] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Vancomycin is used in intensive care unit (ICU) patients for the treatment of infections caused by gram-positive bacteria. The vancomycin pharmacokinetic/pharmacodynamic index is a ratio of the area under the concentration to the minimum inhibitory concentration ≥400-600 h*mg/L. This target can generally be achieved by a plasma concentration of 20-25 mg/L. Together with the pathophysiological alterations and pharmacokinetic variability associated with critical illness, the use of continuous renal replacement therapy (CRRT) may complicate the attainment of adequate vancomycin concentrations. The primary objective was the prevalence of attainment of vancomycin concentrations 20-25 mg/L after 24 h in adult ICU patients receiving CRRT. Secondary outcomes were to evaluate target attainment at days 2 and 3 and to calculate vancomycin clearance (CL) by CRRT and residual diuresis. METHODS We performed a prospective observational study in adult ICU patients on CRRT, which received at least 24 h continuous infusion of vancomycin. Between May 2020 and February 2021, daily vancomycin residual blood gas and dialysate samples were collected from 20 patients, every 6 h and if possible vancomycin urine samples. Vancomycin was analysed with an immunoassay method. The CL by CRRT was calculated by a different approach correcting for the downtime and providing insight into the degree of filter patency. RESULTS The proportion of patients with vancomycin concentrations <20 mg/L was 50% 24 h after starting vancomycin (n = 10). No differences were observed in patient characteristics. The target vancomycin concentration 20-25 mg/L was only achieved in 30% of the patients. On days 2 and 3, despite the use of TDM and albeit in lower percentages, sub- and supratherapeutic levels were still observed. Taking downtime and filter patency into account resulted in lower vancomycin CL. CONCLUSIONS 50% of the studied ICU patients on CRRT showed subtherapeutic vancomycin concentrations 24 h after starting therapy. The results reveal that optimization of vancomycin dosage during CRRT therapy is needed.
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Affiliation(s)
- Tim J L Smeets
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Hilde R H de Geus
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Anouk Rietveld
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Wim J R Rietdijk
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Nicole G M Hunfeld
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
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Edwina AE, Koch BCP, Muller AE, Al Jalali V, Matzneller P, Zeitlinger M, Sassen SDT. Population plasma and urine pharmacokinetics and the probability of target attainment of fosfomycin in healthy male volunteers. Eur J Clin Pharmacol 2023; 79:775-787. [PMID: 37060459 DOI: 10.1007/s00228-023-03477-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/13/2023] [Indexed: 04/16/2023]
Abstract
PURPOSE A population pharmacokinetic model of fosfomycin was developed in healthy volunteers after intravenous administration, and different dosing regimens were evaluated in terms of the probability of target attainment for Escherichia coli using both plasma and urinary pharmacokinetic/pharmacodynamic targets. METHODS Eight healthy men received fosfomycin as both intermittent 8 g q8h and continuous infusion 1 g/h with a loading dose of 8 g in a crossover study design. Dense sampling was conducted during both regimens. Population pharmacokinetic modelling was performed using NONMEM. Monte Carlo simulations were conducted to evaluate the Probability of Target Attainment (PTA) of different dosing regimens using bactericidal (AUC24h/MIC of 83 and 75%T>MIC) and bacteriostatic (AUC24h/MIC of 25) plasma targets and bacteriostatic (AUC24h/MIC of 3994) urine target. RESULTS A total of 176 plasma and 86 urine samples were available for PK analysis. A two-compartment model with a urine compartment best described the data. Glomerular filtration rate (GFR) showed a significant correlation with renal clearance and was implemented in the final model. Simulation results show that the dose of 4 g q8h reached 100% of PTA using bactericidal and bacteriostatic targets for MIC up to 16 mg/L. CONCLUSION For the clinical breakpoint of 32 mg/L, the standard dosing regimen (4 g q8h) might not be sufficient to reach the bactericidal target. Higher dosing of 8 g q8h as an intermittent infusion or 0.75 g/h as a continuous infusion might be required. Continuous infusion resulted in better attainment of the %T>MIC target than intermittent infusion.
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Affiliation(s)
- Angela Elma Edwina
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
- Gerontology and Geriatrics Unit, Department of Public Health and Primary Care, KU Leuven - University of Leuven, Leuven, Belgium
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Anouk E Muller
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Medical Microbiology, Haaglanden Medical Center, The Hague, The Netherlands
| | - Valentin Al Jalali
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Peter Matzneller
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
- Service of Rheumatology, Hospital of Merano, South Tyrol Health System ASDAA-SABES, South Tyrol, Italy
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Sebastiaan D T Sassen
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands.
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Agema BC, Buijs SM, Sassen SDT, Mürdter TE, Schwab M, Koch BCP, Jager A, van Schaik RHN, Mathijssen RHJ, Koolen SLW. Toward model-informed precision dosing for tamoxifen: A population-pharmacokinetic model with a continuous CYP2D6 activity scale. Biomed Pharmacother 2023; 160:114369. [PMID: 36753957 DOI: 10.1016/j.biopha.2023.114369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
BACKGROUND Tamoxifen is important in the adjuvant treatment of breast cancer. A plasma concentration of the active metabolite endoxifen of > 16 nM is associated with a lower risk of breast cancer-recurrence. Since inter-individual variability is high and > 20 % of patients do not reach endoxifen levels > 16 nM with the standard dose tamoxifen, therapeutic drug monitoring is advised. However, ideally, the correct tamoxifen dose should be known prior to start of therapy. Our aim is to develop a population pharmacokinetic (POP-PK) model incorporating a continuous CYP2D6 activity scale to support model informed precision dosing (MIPD) of tamoxifen to determine the optimal tamoxifen starting dose. METHODS Data from eight different clinical studies were pooled (539 patients, 3661 samples) and used to develop a POP-PK model. In this model, CYP2D6 activity per allele was estimated on a continuous scale. After inclusion of covariates, the model was subsequently validated using an independent external dataset (378 patients). Thereafter, dosing cut-off values for MIPD were determined. RESULTS A joint tamoxifen/endoxifen POP-PK model was developed describing the endoxifen formation rate. Using a continuous CYP2D6 activity scale, variability in predicting endoxifen levels was decreased by 37 % compared to using standard CYP2D6 genotype predicted phenotyping. After external validation and determination of dosing cut-off points, MIPD could reduce the proportion of patients with subtherapeutic endoxifen levels at from 22.1 % toward 4.8 %. CONCLUSION Implementing MIPD from the start of tamoxifen treatment with this POP-PK model can reduce the proportion of patients with subtherapeutic endoxifen levels at steady-state to less than 5 %.
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Affiliation(s)
- Bram C Agema
- Dept. of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center; Rotterdam, the Netherlands; Dept. of Clinical Pharmacy, Erasmus University Medical Center; Rotterdam, the Netherlands.
| | - Sanne M Buijs
- Dept. of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center; Rotterdam, the Netherlands
| | - Sebastiaan D T Sassen
- Dept. of Clinical Pharmacy, Erasmus University Medical Center; Rotterdam, the Netherlands; Rotterdam Clinical Pharmacometrics Group; Rotterdam, the Netherlands
| | - Thomas E Mürdter
- Margarete Fischer-Bosch-Institute of Clinical Pharmacology; Stuttgart, Germany; University of Tübingen; Tübingen, Germany
| | - Mathias Schwab
- Margarete Fischer-Bosch-Institute of Clinical Pharmacology; Stuttgart, Germany; Dept. of Clinical Pharmacology, University Hospital Tübingen; Tübingen, Germany; iFIT Cluster of Excellence (EXC2180) "Image Guided and Functionally Instructed Tumor Therapies", University of Tübingen, Tübingen, Germany
| | - Birgit C P Koch
- Dept. of Clinical Pharmacy, Erasmus University Medical Center; Rotterdam, the Netherlands; Rotterdam Clinical Pharmacometrics Group; Rotterdam, the Netherlands
| | - Agnes Jager
- Dept. of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center; Rotterdam, the Netherlands
| | - Ron H N van Schaik
- Dept. of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Ron H J Mathijssen
- Dept. of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center; Rotterdam, the Netherlands
| | - Stijn L W Koolen
- Dept. of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center; Rotterdam, the Netherlands; Dept. of Clinical Pharmacy, Erasmus University Medical Center; Rotterdam, the Netherlands
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Prins HAB, Crespo R, Lungu C, Rao S, Li L, Overmars RJ, Papageorgiou G, Mueller YM, Stoszko M, Hossain T, Kan TW, Rijnders BJA, Bax HI, van Gorp ECM, Nouwen JL, de Vries-Sluijs TEMS, Schurink CAM, de Mendonça Melo M, van Nood E, Colbers A, Burger D, Palstra RJ, van Kampen JJA, van de Vijver DAMC, Mesplède T, Katsikis PD, Gruters RA, Koch BCP, Verbon A, Mahmoudi T, Rokx C. The BAF complex inhibitor pyrimethamine reverses HIV-1 latency in people with HIV-1 on antiretroviral therapy. Sci Adv 2023; 9:eade6675. [PMID: 36921041 PMCID: PMC10017042 DOI: 10.1126/sciadv.ade6675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Reactivation of the latent HIV-1 reservoir is a first step toward triggering reservoir decay. Here, we investigated the impact of the BAF complex inhibitor pyrimethamine on the reservoir of people living with HIV-1 (PLWH). Twenty-eight PLWH on suppressive antiretroviral therapy were randomized (1:1:1:1 ratio) to receive pyrimethamine, valproic acid, both, or no intervention for 14 days. The primary end point was change in cell-associated unspliced (CA US) HIV-1 RNA at days 0 and 14. We observed a rapid, modest, and significant increase in (CA US) HIV-1 RNA in response to pyrimethamine exposure, which persisted throughout treatment and follow-up. Valproic acid treatment alone did not increase (CA US) HIV-1 RNA or augment the effect of pyrimethamine. Pyrimethamine treatment did not result in a reduction in the size of the inducible reservoir. These data demonstrate that the licensed drug pyrimethamine can be repurposed as a BAF complex inhibitor to reverse HIV-1 latency in vivo in PLWH, substantiating its potential advancement in clinical studies.
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Affiliation(s)
- Henrieke A. B. Prins
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Raquel Crespo
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Cynthia Lungu
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Shringar Rao
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Letao Li
- Department of Pharmacy, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Ronald J. Overmars
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | - Yvonne M. Mueller
- Department of Immunology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Mateusz Stoszko
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Tanvir Hossain
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Tsung Wai Kan
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Bart J. A. Rijnders
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Hannelore I. Bax
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Eric C. M. van Gorp
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Jan L. Nouwen
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Theodora E. M. S. de Vries-Sluijs
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Carolina A. M. Schurink
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Mariana de Mendonça Melo
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Els van Nood
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Angela Colbers
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center Nijmegen, Nijmegen, Netherlands
| | - David Burger
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center Nijmegen, Nijmegen, Netherlands
| | - Robert-Jan Palstra
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | | | - Thibault Mesplède
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Peter D. Katsikis
- Department of Immunology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Rob A. Gruters
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Birgit C. P. Koch
- Department of Pharmacy, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Annelies Verbon
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Internal Medicine, University Medical Center, Utrecht, Netherlands
| | - Tokameh Mahmoudi
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Casper Rokx
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
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Ewoldt TMJ, Bahmany S, Abdulla A, Muller AE, Endeman H, Koch BCP. Plasma protein binding of ceftriaxone in critically ill patients: can we predict unbound fractions? J Antimicrob Chemother 2023; 78:1059-1065. [PMID: 36849582 PMCID: PMC10068419 DOI: 10.1093/jac/dkad046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/08/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Standard antibiotic dosing is not suitable for critically ill patients, due to altered pharmacokinetics (PK) in these patients. Knowledge of protein binding is important for optimizing antibiotic exposure because only the unbound fraction is pharmacologically active. If unbound fractions can be predicted, minimal sampling techniques and less costly methods can be routinely used. METHODS Data from the DOLPHIN trial, a prospective randomized clinical trial that included critically ill patients, were used. Total and unbound ceftriaxone concentrations were determined using a validated UPLC-MS/MS method. A non-linear saturable binding model was made using 75% of the trough concentrations and validated on the remaining data. Our model and previously published models were tested for their performance for subtherapeutic (<1 mg/L) and high (>10 mg/L) unbound concentrations. RESULTS In total, 113 patients were sampled [Acute Physiology And Chronic Health Evaluation version 4 (APACHE IV) score 71 (IQR 55-87), albumin 28 g/L (IQR 24-32)]. This resulted in 439 samples (trough = 224, peak = 215). Unbound fractions were significantly different between samples taken at trough and peak times [10.9% (IQR 7.9-16.4) versus 19.7% (IQR 12.9-26.6), P < 0.0001], which was not explained by concentration differences. Our model and most literature models showed good sensitivity and low specificity to determine high and subtherapeutic ceftriaxone trough concentrations using only the total ceftriaxone and albumin concentrations. CONCLUSIONS Ceftriaxone protein binding is not concentration related in critically ill patients. Existing models show good ability to predict high concentrations, but low specificity in predicting subtherapeutic concentrations.
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Affiliation(s)
- Tim M J Ewoldt
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Intensive Care Medicine, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands.,Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Soma Bahmany
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.,Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands.,CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, Rotterdam, The Netherlands
| | - Anouk E Muller
- CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, Rotterdam, The Netherlands.,Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Medicine, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.,Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands.,CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, Rotterdam, The Netherlands
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Li L, Sassen SDT, Ewoldt TMJ, Abdulla A, Hunfeld NGM, Muller AE, de Winter BCM, Endeman H, Koch BCP. Meropenem Model-Informed Precision Dosing in the Treatment of Critically Ill Patients: Can We Use It? Antibiotics (Basel) 2023; 12:antibiotics12020383. [PMID: 36830294 PMCID: PMC9951903 DOI: 10.3390/antibiotics12020383] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
The number of pharmacokinetic (PK) models of meropenem is increasing. However, the daily role of these PK models in the clinic remains unclear, especially for critically ill patients. Therefore, we evaluated the published meropenem models on real-world ICU data to assess their suitability for use in clinical practice. All models were built in NONMEM and evaluated using prediction and simulation-based diagnostics for the ability to predict the subsequent meropenem concentrations without plasma concentrations (a priori), and with plasma concentrations (a posteriori), for use in therapeutic drug monitoring (TDM). Eighteen PopPK models were included for evaluation. The a priori fit of the models, without the use of plasma concentrations, was poor, with a prediction error (PE)% of the interquartile range (IQR) exceeding the ±30% threshold. The fit improved when one to three concentrations were used to improve model predictions for TDM purposes. Two models were in the acceptable range with an IQR PE% within ±30%, when two or three concentrations were used. The role of PK models to determine the starting dose of meropenem in this population seems limited. However, certain models might be suitable for TDM-based dose adjustment using two to three plasma concentrations.
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Affiliation(s)
- Letao Li
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Sebastiaan D. T. Sassen
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
- Correspondence:
| | - Tim M. J. Ewoldt
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
- Department of Intensive Care, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
| | - Nicole G. M. Hunfeld
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Intensive Care, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Anouk E. Muller
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Department of Medical Microbiology, Haaglanden Medical Centre, 2597 AX The Hague, The Netherlands
| | - Brenda C. M. de Winter
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Birgit C. P. Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
- Center for Antimicrobial Treatment Optimization Rotterdam (CATOR), 3015 GD Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, 3015 GD Rotterdam, The Netherlands
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Roelofsen EE, Abdulla A, Muller AE, Endeman H, Gommers D, Dijkstra A, Hunfeld NGM, de Winter BCM, Koch BCP. Dose optimization of cefotaxime as pre-emptive treatment in critically ill adult patients: A population pharmacokinetic study. Br J Clin Pharmacol 2023; 89:705-713. [PMID: 35942921 PMCID: PMC10087439 DOI: 10.1111/bcp.15487] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 07/11/2022] [Accepted: 07/21/2022] [Indexed: 01/18/2023] Open
Abstract
AIMS To describe the pharmacokinetics (PK) of cefotaxime as pre-emptive treatment in critically ill adult patients, including covariates and to determine the probability of target attainment (PTA) of different dosage regimens for Enterobacterales and Staphylococcus aureus. METHODS Five samples were drawn during 1 dosage interval in critically ill patients treated with cefotaxime 1 g q6h or q4h. PK parameters were estimated using NONMEM (v7.4.2). The percentage of patients reaching 100% fT>MICECOFF was used to compare different dosage regimens for Enterobacterales and S. aureus. RESULTS This study included 92 patients (437 samples). The best structural model was a 2-compartment model with a combined error, interindividual variability on clearance, central volume and intercompartmental clearance. Correlations between interindividual variability were included. Clearance increased with higher estimated glomerular filtration rate (eGFR; creatinine clearance) and albumin concentration. For Enterobacterales, 1 g q8h reached 95% PTA and continuous infusion (CI) of 4 g 24 h-1 100% PTA at the highest eGFR and albumin concentration. For S. aureus the predefined target of 95% PTA was not reached with higher eGFR and/or albumin concentrations. CI of 6 g 24 h-1 for S. aureus resulted in a minimum of 99% PTA. CONCLUSION Cefotaxime PK in critically ill patients was best described by a 2-compartment model with eGFR and albumin concentration as covariates influencing clearance. For Enterobacterales 1 g q8h or CI of 4 g 24 h-1 was adequate for all combinations of eGFR and albumin concentration. For S. aureus CI of 6 g 24 h-1 would be preferred if eGFR and albumin concentration exceed 80 mL min-1 and 40 g L-1 respectively.
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Affiliation(s)
- Eveline E Roelofsen
- Department of Hospital Pharmacy, Haaglanden Medical Center, The Hague, The Netherlands.,Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Anouk E Muller
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Medical Microbiology, Haaglanden Medical Centre, The Hague, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Diederik Gommers
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Annemieke Dijkstra
- Department of Intensive Care, Maasstad Hospital, Rotterdam, The Netherlands
| | - Nicole G M Hunfeld
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Brenda C M de Winter
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
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Hermans RA, Ringeling LT, Liang K, Kloosterboer SM, de Winter BCM, Hillegers MHJ, Koch BCP, Dierckx B. The effect of therapeutic drug monitoring of risperidone and aripiprazole on weight gain in children and adolescents: the SPACe 2: STAR (trial) protocol of an international multicentre randomised controlled trial. BMC Psychiatry 2022; 22:814. [PMID: 36539734 PMCID: PMC9769061 DOI: 10.1186/s12888-022-04445-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Antipsychotic drugs are an important part of the treatment of irritability and aggression in children with an autism spectrum disorder (ASD). However, significant weight gain and metabolic disturbances are clinically relevant side effects of antipsychotic use in children. In the SPACe study, we showed positive correlations between both risperidone and aripiprazole plasma trough concentrations and weight gain over a 6-month period. The trial SPACe 2: STAR is designed as a follow-up study, in which we aim to research whether therapeutic drug monitoring in clinical practice can prevent severe weight gain, while retaining clinical effectiveness. METHODS SPACe 2: STAR is an international, multicentre, randomised controlled trial (RCT). One hundred forty children aged 6 to 18 who are about to start risperidone or aripiprazole treatment for ASD related behavioural problems will be randomised into one of two groups: a therapeutic drug monitoring (TDM) group, and a care as usual (CAU) group. Participants will be assessed at baseline and 4, 10, 24, and 52 weeks follow-up. In the TDM group, physicians will receive dosing advice based on plasma levels of risperidone and aripiprazole and its metabolites at 4 and 10 weeks. Plasma levels will be measured in dried blood spots (DBS). The primary outcome will be BMI z-score at 24 weeks after start of antipsychotic treatment. Among the secondary outcomes are effectiveness, metabolic laboratory measurements, levels of prolactin, leptin and ghrelin, extrapyramidal side effects, and quality of life. DISCUSSION This will be the first RCT evaluating the effect of TDM of antipsychotic drugs in children and adolescents. Thus, findings from SPACe 2: STAR will be of great value in optimising treatment in this vulnerable population. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT05146245. EudraCT number: 2020-005450-18. Sponsor protocol name: SPACe2STAR. Registered 8 June 2021. Protocol Version 6, Protocol date: 18 august 2022.
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Affiliation(s)
- Rebecca A. Hermans
- grid.5645.2000000040459992XDepartment of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, 3000 CB Rotterdam, PO Box 2060, the Netherlands ,grid.5645.2000000040459992XDepartment of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands ,grid.5645.2000000040459992XRotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Lisa T. Ringeling
- grid.5645.2000000040459992XDepartment of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, 3000 CB Rotterdam, PO Box 2060, the Netherlands ,grid.5645.2000000040459992XDepartment of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands ,grid.5645.2000000040459992XRotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Kajie Liang
- grid.5645.2000000040459992XDepartment of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands ,grid.5645.2000000040459992XRotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Sanne M. Kloosterboer
- grid.5645.2000000040459992XDepartment of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, 3000 CB Rotterdam, PO Box 2060, the Netherlands
| | - Brenda C. M. de Winter
- grid.5645.2000000040459992XDepartment of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands ,grid.5645.2000000040459992XRotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Manon H. J. Hillegers
- grid.5645.2000000040459992XDepartment of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, 3000 CB Rotterdam, PO Box 2060, the Netherlands
| | - Birgit C. P. Koch
- grid.5645.2000000040459992XDepartment of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands ,grid.5645.2000000040459992XRotterdam Clinical Pharmacometrics Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Bram Dierckx
- grid.5645.2000000040459992XDepartment of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, 3000 CB Rotterdam, PO Box 2060, the Netherlands
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Verheij C, Haagsma JA, Koch BCP, Segers AEM, Schuit SCE, Rood PPM. Screening for hazardous alcohol use in the Emergency Department: Comparison of phosphatidylethanol with the Alcohol Use Disorders Identification Test and the Timeline Follow-back. Alcohol Clin Exp Res 2022; 46:2225-2235. [PMID: 36520053 PMCID: PMC10107187 DOI: 10.1111/acer.14958] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/10/2022] [Accepted: 10/07/2022] [Indexed: 12/16/2022]
Abstract
BACKGROUND Up to 15% of all visits to the Emergency Department (ED) are alcohol related. Identification of problematic alcohol use is important in this setting because it allows for intervention and prevention efforts. This study investigated the correlation between the objective phosphatidylethanol (PEth) marker and the subjective Alcohol Use Disorders Identification Test (AUDIT) and Timeline Followback Questionnaire (TLFB) as screening methods for hazardous alcohol use in the general ED population. METHODS This prospective cohort study included 301 ED patients (57% male) who were seen in the ED and required to give a blood sample. The correlation between the values of PEth (PEth 16:0/18:1 and PEth 16:0/18:2) and the scores on the AUDIT and TLFB were analyzed using Spearman's rank correlation coefficient. Differences between risk categories of PEth and AUDIT were also examined. RESULTS The Spearman correlation coefficients between PEth 16:0/18:1|PEth 16:0/18:2 values and the AUDIT scores were moderate (PEth 16:0/18:1: 0.67, p < 0.001; PEth 16:0/18:2: 0.67, p < 0.001). Of the patients who scored 'low risk drinking/abstinence' according to the AUDIT questionnaire, respectively 1% and 4% had PEth 16:0/18:1|PEth 16:0/18:2 values indicating excessive alcohol use, and another 10% and 12% had PEth 16:0/18:1|PEth 16:0/18:2 values indicating moderate alcohol consumption. Of the 12 (PEth 16:0/18:1) and 25 (PEth 16:0/18:2) patients with high-risk values, respectively 25% and 40% scored in the lowest risk category on the AUDIT questionnaire. Spearman correlation coefficients between PEth 16:0/18:1|PEth 16:0/18:2 values and TLFB two-week scores were high (PEth 16:0/18:1: 0.74, p < 0.001; PEth 16:0/18:2: 0.82, p < 0.001). CONCLUSIONS AUDIT scores were moderately correlated with PEth values in the general ED population. In almost all cases where there was not a good correlation, patients had high PEth values with low AUDIT scores. We conclude that PEth identifies patients with problematic alcohol use who are missed by the AUDIT questionnaire and therefore PEth could be used as an additional screening method for hazardous alcohol use in this population.
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Affiliation(s)
- Carolien Verheij
- Department of Emergency Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Juanita A Haagsma
- Department of Emergency Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Anne E M Segers
- Department of Emergency Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Stephanie C E Schuit
- Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Board of Directors, University Medical Center Groningen, Groningen, The Netherlands
| | - Pleunie P M Rood
- Department of Emergency Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Malmberg R, Zietse M, Dumoulin DW, Hendrikx JJMA, Aerts JGJV, van der Veldt AAM, Koch BCP, Sleijfer S, van Leeuwen RWF. Alternative dosing strategies for immune checkpoint inhibitors to improve cost-effectiveness: a special focus on nivolumab and pembrolizumab. Lancet Oncol 2022; 23:e552-e561. [DOI: 10.1016/s1470-2045(22)00554-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/30/2022]
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Wieringa A, Ter Horst PGJ, Wagenvoort GHJ, Dijkstra A, Abdulla A, Haringman JJ, Koch BCP. Target attainment and pharmacokinetics of cefotaxime in critically ill patients undergoing continuous kidney replacement therapy. J Antimicrob Chemother 2022; 77:3421-3426. [PMID: 36210582 DOI: 10.1093/jac/dkac334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 09/13/2022] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES Limited data exist about the antimicrobial target attainment and pharmacokinetics of cefotaxime in critically ill patients in the ICU undergoing continuous kidney replacement therapy (CKRT). We conducted a prospective observational study in two large teaching hospitals [Isala Hospital (IH) and Zwolle and Maasstad Hospital (MH)] to investigate target attainment and pharmacokinetics of cefotaxime in patients undergoing CKRT. PATIENTS AND METHODS Patients aged ≥18 years admitted to the ICU treated with IV cefotaxime 1000 mg three times daily (IH) or 4 times daily (MH) were included. Fifteen patients were enrolled in total. Per patient eight cefotaxime plasma and eight ultrafiltrate samples were drawn in IH and four plasma samples in MH on Day 2 of treatment. In ICU patients the recommended antimicrobial target of cefotaxime is a plasma concentration 100% of the time above the MIC. RESULTS In IH 10/11 patients had higher plasma trough concentrations than the MIC breakpoint of Enterobacterales of 1 mg/L (clinical breakpoint for susceptible strains) and 9/11 patients had concentrations above 2 mg/L (clinical breakpoint for resistant strains). All patients (4/4) in MH had higher plasma trough concentrations than 2 mg/L. A sieving coefficient of 0.74 was identified, with a median amount of 40% of cefotaxime eliminated by CKRT. CONCLUSIONS We conclude that cefotaxime 1000 mg 3-4 times daily gives adequate plasma concentrations in patients with anuria or oliguria undergoing CKRT. The 1000 mg four times daily dosage is recommended in patients undergoing CKRT with partially preserved renal function to achieve the target.
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Affiliation(s)
- André Wieringa
- Department of Clinical Pharmacy, Isala Hospital, Zwolle, The Netherlands.,Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | | | - Gertjan H J Wagenvoort
- Laboratory of Clinical Microbiology and Infectious Diseases, Isala Hospital, Zwolle, The Netherlands
| | - Annemieke Dijkstra
- Department of Intensive Care, Maasstad Hospital, Rotterdam, The Netherlands
| | - Alan Abdulla
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands.,Department of Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Birgit C P Koch
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands.,Department of Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
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Broekhuizen M, de Vries R, Smits MAW, Dik WA, Schoenmakers S, Koch BCP, Merkus D, Reiss IKM, Danser AHJ, Simons SHP, Hitzerd E. Pentoxifylline as a therapeutic option for pre-eclampsia: a study on its placental effects. Br J Pharmacol 2022; 179:5074-5088. [PMID: 35861684 PMCID: PMC9804511 DOI: 10.1111/bph.15931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 07/05/2022] [Accepted: 07/11/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND AND PURPOSE Recently pentoxifylline, a non-selective phosphodiesterase inhibitor and adenosine receptor antagonist, has attracted much interest for the treatment of the increased vascular resistance and endothelial dysfunction in pre-eclampsia. We therefore investigated the placental transfer, vascular effects and anti-inflammatory actions of pentoxifylline in healthy and pre-eclamptic human placentas. EXPERIMENTAL APPROACH The placental transfer and metabolism of pentoxifylline were studied using ex vivo placenta perfusion experiments. In wire myography experiments with chorionic plate arteries, pentoxifyllines vasodilator properties were investigated, focusing on the cGMP and cAMP pathways and adenosine receptors. Its effects on inflammatory factors were also studied in placental explants. KEY RESULTS Pentoxifylline transferred from the maternal to foetal circulation, reaching identical concentrations. The placenta metabolized pentoxifylline into its active metabolite lisofylline (M1), which was released into both circulations. In healthy placentas, pentoxifylline potentiated cAMP- and cGMP-induced vasodilation, as well as causing vasodilation by adenosine A1 antagonism and via NO synthase and PKG. Pentoxifylline also reduced inflammatory factors secretion. In pre-eclamptic placentas, we observed that its vasodilator capacity was preserved, however not via NO-PKG but likely through adenosine signalling. Pentoxifylline neither potentiated vasodilation through cAMP and cGMP, nor suppressed the release of inflammatory factors from these placentas. CONCLUSION AND IMPLICATIONS Pentoxifylline is transferred across and metabolized by the placenta. Its beneficial effects on the NO pathway and inflammation are not retained in pre-eclampsia, limiting its application in this disease, although it could be useful for other placenta-related disorders. Future studies might focus on selective A1 receptor antagonists as a new treatment for pre-eclampsia.
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Affiliation(s)
- Michelle Broekhuizen
- Division of Neonatology, Department of PaediatricsErasmus MC University Medical CenterRotterdamThe Netherlands,Division of Pharmacology and Vascular Medicine, Department of Internal MedicineErasmus MC University Medical CenterRotterdamThe Netherlands,Division of Experimental Cardiology, Department of CardiologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Rene de Vries
- Division of Pharmacology and Vascular Medicine, Department of Internal MedicineErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Marja A. W. Smits
- Laboratory Medical Immunology, Department of ImmunologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Willem A. Dik
- Laboratory Medical Immunology, Department of ImmunologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Sam Schoenmakers
- Department of Obstetrics and GynaecologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Birgit C. P. Koch
- Department of PharmacyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Daphne Merkus
- Division of Experimental Cardiology, Department of CardiologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Irwin K. M. Reiss
- Division of Neonatology, Department of PaediatricsErasmus MC University Medical CenterRotterdamThe Netherlands
| | - A. H. Jan Danser
- Division of Pharmacology and Vascular Medicine, Department of Internal MedicineErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Sinno H. P. Simons
- Division of Neonatology, Department of PaediatricsErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Emilie Hitzerd
- Division of Neonatology, Department of PaediatricsErasmus MC University Medical CenterRotterdamThe Netherlands,Division of Pharmacology and Vascular Medicine, Department of Internal MedicineErasmus MC University Medical CenterRotterdamThe Netherlands
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Francke MI, Peeters LEJ, Hesselink DA, Kloosterboer SM, Koch BCP, Veenhof H, de Winter BCM. Best Practices to Implement Dried Blood Spot Sampling for Therapeutic Drug Monitoring in Clinical Practice. Ther Drug Monit 2022; 44:696-700. [PMID: 35607881 PMCID: PMC9467683 DOI: 10.1097/ftd.0000000000000994] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/27/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Sampling of blood at home to determine the concentration of drugs or other compounds can be effective in limiting hospital-based sampling. This could lower hospital visits and patient burden, improve the quality of life, and reduce health care costs. Dried blood spot (DBS) microsampling is often used for this purpose, wherein capillary blood, obtained by pricking the heel or finger, is used to measure different analytes. Although DBS has several advantages over venous blood sampling, it is not routinely implemented in clinical practice. To facilitate the bench to bedside transition, it is important to be aware of certain challenges that need to be considered and addressed. RESULTS Here, important considerations regarding the implementation of DBS in clinical practice, the choice of patients, blood sampling, transport, and laboratory analysis are discussed. In addition, we share our experience and provide suggestions on how to deal with these problems in a clinical setting.
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Affiliation(s)
- Marith I. Francke
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam
| | - Laura E. J. Peeters
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam
- Division of Vascular Medicine, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam
| | - Dennis A. Hesselink
- Division of Nephrology and Transplantation, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam
| | - Sanne M. Kloosterboer
- Department of Child- and Adolescent Psychiatry/Psychology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam; and
| | - Birgit C. P. Koch
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam
| | - Herman Veenhof
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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Rubio-Beltrán E, Schoon RM, van den Berg J, Schuiling-Veninga CCM, Koch BCP, Villalón CM, Versmissen J, Danser AHJ, van den Meiracker AH, Ibrahimi K, MaassenVanDenBrink A. Trigeminovascular effects of propranolol in men and women, role for sex steroids. Ann Clin Transl Neurol 2022; 9:1405-1416. [PMID: 36029132 PMCID: PMC9463958 DOI: 10.1002/acn3.51640] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 11/08/2022] Open
Abstract
Objective Assess whether propranolol modulates the trigeminovascular system in both men and women. Methods We investigated the effect of propranolol (80 mg, 90 min after oral administration, corresponding to Tmax) on the increase in dermal blood flow of the forehead skin (innervated by the trigeminal nerve) by capsaicin application (0.6 mg/mL) and electrical stimulation (0.2–1.0 mA) before and after placebo (grapefruit juice) or propranolol (oral solution diluted in grapefruit juice) in a randomized, double‐blind, placebo‐controlled cross‐over study, including healthy males (n = 10) and females on contraceptives (n = 11). Additionally, we compared our results with data from the Dutch IADB.nl prescription database by analyzing the change in triptan use after propranolol prescription in a population similar to our dermal blood flow study subjects (males and females, 20–39 years old). Results Dermal blood flow responses to capsaicin were significantly attenuated after propranolol, but not after placebo. When stratifying by sex, no significant changes in the capsaicin‐induced dermal blood flow were observed in females after propranolol, whereas they remained significant in males. Dermal blood flow responses to electrical stimulation were not modified in any case. In our prescription database study, after propranolol, a more pronounced decrease in triptan use was observed in male patients than in female patients. Interpretation Propranolol (80 mg) inhibits capsaicin‐induced increases in dermal blood flow in a sex‐dependent manner. In patients, a more pronounced decrease in triptan use is observed in males when compared with females, suggesting an interaction between propranolol and sex steroids in the modulation of the trigeminovascular system.
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Affiliation(s)
- Eloísa Rubio-Beltrán
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Rianne M Schoon
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Jeffrey van den Berg
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Catharina C M Schuiling-Veninga
- Unit of PharmacoTherapy, -Epidemiology and -Economics, University of Groningen, Groningen Research Institute of Pharmacy, Groningen, The Netherlands
| | - Birgit C P Koch
- Department of Pharmacy, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Carlos M Villalón
- Pharmacobiology Department, Cinvestav-Coapa, Tenorios 235, 14330, Mexico City, Mexico
| | - Jorie Versmissen
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - A H Jan Danser
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Anton H van den Meiracker
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Khatera Ibrahimi
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Antoinette MaassenVanDenBrink
- Division of Pharmacology, Vascular Medicine and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
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Koch BCP, Zhao Q, Oosterhoff M, van Oldenrijk J, Abdulla A, de Winter BCM, Bos K, Muller AE. The mysteries of target site concentrations of antibiotics in bone and joint infections: what is known? A narrative review. Expert Opin Drug Metab Toxicol 2022; 18:587-600. [PMID: 36008360 DOI: 10.1080/17425255.2022.2117607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Currently, antibiotic treatment is often a standard dosing regimen in bone and joint infections (BJI). However, it remains unknown if exposure at the target-site is adequate. The aim of this review is to gain more insight in the relationship between the target site concentration of antibiotic and the minimal inhibitory concentration to target the bacteria in bone and joint infections (BJI). AREAS COVERED A literature search was performed by Erasmus MC Medical library. Bone, bone tissue and synovial concentration of antibiotics were covered in humans. In addition, we reported number of patients, dose, sampling method, analytical method and tissue and plasma concentrations. We used the epidemiological cut-off value (ECOFF) values of the targeted micro-organisms. If more than 3 publications were available on the antibiotic, we graphically presented ECOFFS values against reported antibiotic concentrations. EXPERT OPINION For most antibiotics the literature is sparse. In addition, a lot of variable and total antibiotic concentrations are published. Ciprofloxacin, cefazolin, cefuroxime, vancomycin and linezolid seem to have adequate average exposure if correlating total concentration to ECOFF, when standard dosing is used. With regards to other antibiotics, results are inconclusive. More extensive pharmacokinetic/pharmacodynamic modeling in BJI is needed.
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Affiliation(s)
- Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.,CATOR, Center for Antimicrobial Optimized Treatment Rotterdam.,Rotterdam Clinical Pharmacometrics Group
| | - Qiaolin Zhao
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.,Rotterdam Clinical Pharmacometrics Group
| | - Maartje Oosterhoff
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Jakob van Oldenrijk
- Department of Orthopaedics and Sports Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.,CATOR, Center for Antimicrobial Optimized Treatment Rotterdam.,Rotterdam Clinical Pharmacometrics Group
| | - Brenda C M de Winter
- Department of Hospital Pharmacy, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.,CATOR, Center for Antimicrobial Optimized Treatment Rotterdam.,Rotterdam Clinical Pharmacometrics Group
| | - Koen Bos
- Department of Orthopaedics and Sports Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anouk E Muller
- CATOR, Center for Antimicrobial Optimized Treatment Rotterdam.,Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.,Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, the Netherlands
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Peeters LEJ, Bahmany S, Dekker T, Aliawi A, van Domburg B, Versmissen J, Koch BCP. Development and Validation of a Dried Blood Spot Assay Using UHPLC-MS/MS to Identify and Quantify 12 Antihypertensive Drugs and 4 Active Metabolites: Clinical Needs and Analytical Limitations. Ther Drug Monit 2022; 44:568-577. [PMID: 35383727 PMCID: PMC9275854 DOI: 10.1097/ftd.0000000000000984] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/27/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE As nonadherence to antihypertensive drugs (AHDs) can increase the risk of cardiovascular events, hospitalization, and higher costs, there is a need for a reliable, objective, and easy method to assess nonadherence in patients. The dried blood spot (DBS) sampling method used to measure drug concentrations meets these requirements. For detecting nonadherence, identification is more important than quantification. Owing to their use in clinical practice, it is important to measure multiple AHDs with a single method. Therefore, we developed and validated a single DBS method for 17 commonly used AHDs and 4 active metabolites using ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). METHODS Analytical validation of the DBS assay was performed in accordance with the guidelines on bioanalytical method validation of the European Medicines Agency and US Food and Drug Administration as well as the International Association of Therapeutic Drug Monitoring and Clinical Toxicology guidelines. RESULTS We validated 12 of the 17 AHDs according to the European Medicines Agency and Food and Drug Administration requirements for bioanalytical method validation. Eleven AHDs were validated for both identification and quantification of drug concentrations, whereas nifedipine was only validated for identification. However, 5 of the 17 AHDs were excluded due to suboptimal validation results. Lercanidipine was excluded due to nonlinearity, and all 4 AHDs measured in the negative mode of UHPLC-MS/MS were not in accordance with one or more of the acceptance criteria and were therefore excluded. CONCLUSIONS The described method accurately measured AHDs in DBS and can be used to determine nonadherence in patients. However, method validation revealed a challenging balance between analytical limitations and clinical needs when analyzing multiple drugs using the same method.
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Affiliation(s)
- Laura E. J. Peeters
- Departments of Department of Hospital Pharmacy and
- Department of Internal Medicine, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, the Netherlands
| | - Soma Bahmany
- Departments of Department of Hospital Pharmacy and
| | - Tim Dekker
- Departments of Department of Hospital Pharmacy and
| | - Aya Aliawi
- Departments of Department of Hospital Pharmacy and
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Ewoldt TMJ, Abdulla A, Hunfeld N, Li L, Smeets TJL, Gommers D, Koch BCP, Endeman H. The impact of sepsis on hepatic drug metabolism in critically ill patients: a narrative review. Expert Opin Drug Metab Toxicol 2022; 18:413-421. [PMID: 35912845 DOI: 10.1080/17425255.2022.2106215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Hepatic drug metabolism is important in improving drug dosing strategies in sepsis. Pharmacokinetics in the critically ill population are severely altered due to changes in absorption, distribution, excretion and metabolization. Hepatic drug metabolism might be altered due to changes in hepatic blood flow, drug metabolizing protein availability, and protein binding. The purpose of this review is to examine evidence on whether hepatic drug metabolism is significantly affected in septic patients, and to provide insights in the need for future research. AREAS COVERED This review describes the effect of sepsis on hepatic drug metabolism in humans. Clinical trials, pathophysiological background information and example drug groups are further discussed. The literature search has been conducted in Embase, Medline ALL Ovid, and Cochrane CENTRAL register of trials. EXPERT OPINION Limited research has been conducted on drug metabolism in the sepsis population, with some trials having researched healthy individuals using endotoxin injections. Notwithstanding this limitation, hepatic drug metabolism seems to be decreased for certain drugs in sepsis. More research on the pharmacokinetic behavior of hepatic metabolized drugs in sepsis is warranted, using inflammatory biomarkers, hemodynamic changes, mechanical ventilation, organ support, and catecholamine infusion as possible confounders.
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Affiliation(s)
- Tim M J Ewoldt
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Nicole Hunfeld
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Letao Li
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Tim J L Smeets
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Diederik Gommers
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care, Erasmus University Medical Center, Rotterdam, The Netherlands
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Ewoldt TMJ, Abdulla A, van den Broek P, Hunfeld N, Bahmany S, Muller AE, Gommers D, Polinder S, Endeman H, Spronk I, Koch BCP. Barriers and facilitators for therapeutic drug monitoring of beta-lactams and ciprofloxacin in the ICU: a nationwide cross-sectional study. BMC Infect Dis 2022; 22:611. [PMID: 35831793 PMCID: PMC9277596 DOI: 10.1186/s12879-022-07587-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 07/01/2022] [Indexed: 11/30/2022] Open
Abstract
Background Recent studies demonstrated that failure of achieving pharmacodynamic targets of commonly used antibiotics is common in critically ill patients. Therapeutic drug monitoring (TDM) can contribute to optimize the exposure of beta-lactams and ciprofloxacin. While evidence for TDM of these antibiotics is growing, translation into clinical implementation remains limited. Therefore, perceived barriers and facilitators are important for implementing TDM in this population. The primary aim of this study was to identify healthcare professionals’ barriers and facilitators for the implementation of TDM of beta-lactams and ciprofloxacin in Dutch intensive care units (ICU). Methods We conducted a nationwide cross-sectional online survey among healthcare professionals (HCPs) involved in antibiotic treatment of ICU patients. An adapted version of the Measurement Instrument for Determinants of Innovations was sent out. Items were considered barriers when ≥ 20% of participants responded with a negative answer. If ≥ 80% of the participants responded with a positive answer, the item was considered a facilitator. Results Sixty-four HCPs completed the survey, of which 14 were from academic hospitals, 25 from general hospitals, and 25 from teaching hospitals. Most participants were hospital pharmacists (59%) or medical specialists (23%). Eleven barriers and four facilitators for implementation of TDM of beta-lactams were identified; 17 barriers for TDM of ciprofloxacin and no facilitators. The most important barriers were a lack of conclusive evidence, organizational support, and low availability of assays. Additional barriers were a lack of consensus on which specific patients to apply TDM and which pharmacodynamic targets to use. Identified facilitators for beta-lactam TDM implementation are low complexity and high task perception, combined with the perception that TDM is important to prevent side effects and to adequately treat infections. Twenty-eight percent of participants reported that flucloxacillin could be analyzed in their hospital. Assay availability of other beta-lactams and ciprofloxacin was lower (3–17%). Conclusion Several barriers were identified that could obstruct the implementation of TDM of beta-lactams and ciprofloxacin in the ICU. In particular, education, clear guidelines, and organizational support should be considered when creating tailored implementation strategies. Finally, evidence of beneficial clinical outcomes on TDM of beta-lactams and ciprofloxacin can enhance further implementation. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07587-w.
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Affiliation(s)
- Tim M J Ewoldt
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands. .,Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Nicole Hunfeld
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Soma Bahmany
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Anouk E Muller
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Medical Microbiology, Haaglanden Medical Center, The Hague, The Netherlands
| | - Diederik Gommers
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Suzanne Polinder
- Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Inge Spronk
- Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
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Bahmany S, Abdulla A, Ewoldt TMJ, Oehlers PL, de Winter BCM, Koch BCP. High-throughput analysis for the simultaneous quantification of nine beta-lactam antibiotics in human plasma by UPC 2-MS/MS: Method development, validation, and clinical application. J Pharm Biomed Anal 2022; 219:114904. [PMID: 35772234 DOI: 10.1016/j.jpba.2022.114904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 10/18/2022]
Abstract
Quantification of beta-lactam antibiotics can be performed by using liquid chromatography in combination with tandem mass spectrometry (MS/MS) or ultraviolet (UV) detection. Since beta-lactam antibiotics are known as highly polar analytes, using standard reversed phase chromatography will result in very early elution, which is often not desirable. Some retention is preferred to reduce matrix effects, because a high amount of non-retained molecular matrix species elute early from the column. For highly polar analytes, ultra-performance convergence chromatography (UPC2) may be a suitable alternative. This method is based on supercritical fluid chromatography. To our knowledge, we developed the first UPC2-MS/MS method for the determination of amoxicillin, benzylpenicillin, flucloxacillin, piperacillin, cefotaxime, cefuroxime, ceftazidime, imipenem, meropenem, and the free fraction of cefuroxime and flucloxacillin in human plasma. The method was validated according to the Food and Drug Administration guidelines. The method was found linear (r2 >0.990) for all analytes. The inaccuracies and imprecisions were < 15% for all analytes. The matrix effect and recovery were nearly all consistent with coefficient of variation of less than 15% and no significant carryover effect was observed. Furthermore, this method was found to be suitable for daily routine analysis in hospital settings, requiring only 50 µL of plasma. This novel, sensitive, and specific UPC2-MS/MS method demonstrated its value in the analysis of a more than 800 human plasma samples in a clinical trial using simple and fast sample preparation and short analysis run time of only 5 min.
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Affiliation(s)
- Soma Bahmany
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands.
| | - Alan Abdulla
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, the Netherlands
| | - Tim M J Ewoldt
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Intensive Care Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Philip L Oehlers
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Brenda C M de Winter
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, the Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, the Netherlands; CATOR: Center for Antimicrobial Treatment Optimization Rotterdam, the Netherlands
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Agema BC, Veerman GDM, Steendam CMJ, Lanser DAC, Preijers T, van der Leest C, Koch BCP, Dingemans AMC, Mathijssen RHJ, Koolen SLW. Improving the tolerability of osimertinib by identifying its toxic limit. Ther Adv Med Oncol 2022; 14:17588359221103212. [PMID: 35677320 PMCID: PMC9168866 DOI: 10.1177/17588359221103212] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 05/08/2022] [Indexed: 01/05/2023] Open
Abstract
Background: Osimertinib is the cornerstone in the treatment of epidermal growth factor
receptor-mutated non-small cell lung cancer (NSCLC). Nonetheless, ±25% of
patients experience severe treatment-related toxicities. Currently, it is
impossible to identify patients at risk of severe toxicity beforehand.
Therefore, we aimed to study the relationship between osimertinib exposure
and severe toxicity and to identify a safe toxic limit for a preventive dose
reduction. Methods: In this real-life prospective cohort study, patients with NSCLC treated with
osimertinib were followed for severe toxicity (grade ⩾3 toxicity, dose
reduction or discontinuation, hospital admission, or treatment termination).
Blood for pharmacokinetic analyses was withdrawn during every out-patient
visit. Primary endpoint was the correlation between osimertinib clearance
(exposure) and severe toxicity. Secondary endpoint was the exposure–efficacy
relationship, defined as progression-free survival (PFS) and overall
survival (OS). Results: In total, 819 samples from 159 patients were included in the analysis.
Multivariate competing risk analysis showed osimertinib clearance
(c.q. exposure) to be significantly correlated with
severe toxicity (hazard ratio 0.93, 95% CI: 0.88–0.99). An relative
operating characteristic curve showed the optimal toxic limit to be
259 ng/mL osimertinib. A 50% dose reduction in the high-exposure group, that
is 25.8% of the total cohort, would reduce the risk of severe toxicity by
53%. Osimertinib exposure was not associated with PFS nor OS. Conclusion: Osimertinib exposure is highly correlated with the occurrence of severe
toxicity. To optimize tolerability, patients above the toxic limit
concentration of 259 ng/mL could benefit from a preventive dose reduction,
without fear for diminished effectiveness.
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Affiliation(s)
- Bram C. Agema
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Dr. Molewaterplein 40, Rotterdam 3015 GD, The Netherlands Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - G. D. Marijn Veerman
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Pulmonology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Christi M. J. Steendam
- Department of Pulmonology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Pulmonology, Amphia Hospital, Breda, The Netherlands
| | - Daan A. C. Lanser
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Tim Preijers
- Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Birgit C. P. Koch
- Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Anne-Marie C. Dingemans
- Department of Pulmonology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ron H. J. Mathijssen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Stijn L. W. Koolen
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands Department of Clinical Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
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Hendriksen LC, Omes-Smit G, Koch BCP, Ikram MA, Stricker BH, Visser LE. Sex-Based Difference in the Effect of Metoprolol on Heart Rate and Bradycardia in a Population-Based Setting. J Pers Med 2022; 12:jpm12060870. [PMID: 35743655 PMCID: PMC9224772 DOI: 10.3390/jpm12060870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/15/2022] [Accepted: 05/22/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Metoprolol, a beta-blocker, is used to reduce the heart rate. Although it has been demonstrated that the metoprolol plasma concentration is higher in women than in men, the same dose is recommended. In this study, we investigated whether the metoprolol concentration was associated with a stronger heart-rate reduction and bradycardia in women than in men. Methods: This study is part of the Rotterdam Study (RS), a population-based prospective cohort study. Blood samples from a random subset of 2000 participants were used to assess metoprolol plasma levels. An analysis of heart rate (beats per minute, bpm) and bradycardia (<60 bpm) was performed in metoprolol users with an ECG at the day of blood collection to study sex-specific differences in heart rate and the risk of bradycardia. Results: In total, 40 women and 39 men were included. There was a statistically significant association between metoprolol concentration and heart rate in women (p-value: 0.014) but not in men (p-value: 0.639). Furthermore, women in the highest concentration group had a more than 15-times-higher risk of bradycardia than women in the lowest concentration group (OR = 15.6; 95% CI = 1.1, 217.3); however, this was not seen in men (OR = 1.3; 95% CI = 0.1, 12.4). After adjustment for age, BMI, time between blood sample and ECG, hypertension, myocardial infarction, heart failure, atrial fibrillation, digoxin use, and calcium channel blocker use, the association between concentration and bradycardia in women remained statistically significant. Conclusions: Women, but not men, had a statistically significantly lower heart rate at higher metoprolol plasma concentration and a statistically significantly increased risk of bradycardia.
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Affiliation(s)
- Linda C. Hendriksen
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands; (L.C.H.); (G.O.-S.); (M.A.I.); (B.H.S.)
- Department of Clinical Pharmacy, Tergooi MC, 1213 XZ Hilversum, The Netherlands
| | - Grace Omes-Smit
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands; (L.C.H.); (G.O.-S.); (M.A.I.); (B.H.S.)
| | - Birgit C. P. Koch
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands;
| | - M. Arfan Ikram
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands; (L.C.H.); (G.O.-S.); (M.A.I.); (B.H.S.)
| | - Bruno H. Stricker
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands; (L.C.H.); (G.O.-S.); (M.A.I.); (B.H.S.)
| | - Loes E. Visser
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands; (L.C.H.); (G.O.-S.); (M.A.I.); (B.H.S.)
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands;
- Department of Clinical Pharmacy, Haga Teaching Hospital, 2545 AA The Hague, The Netherlands
- Correspondence:
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Smeets TJL, Valkenburg AJ, van der Jagt M, Koch BCP, Endeman H, Gommers DAMPJ, Sassen SDT, Hunfeld NGM. Hyperinflammation Reduces Midazolam Metabolism in Critically Ill Adults with COVID-19. Clin Pharmacokinet 2022; 61:973-983. [PMID: 35397768 PMCID: PMC8994846 DOI: 10.1007/s40262-022-01122-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2022] [Indexed: 11/26/2022]
Abstract
Background and Objective Many patients treated for COVID-19 related acute respiratory distress syndrome in the intensive care unit are sedated with the benzodiazepine midazolam. Midazolam undergoes extensive metabolism by CYP3A enzymes, which may be inhibited by hyperinflammation. Therefore, an exaggerated proinflammatory response, as often observed in COVID-19, may decrease midazolam clearance. To develop a population pharmacokinetic model for midazolam in adult intensive care unit patients infected with COVID-19 and to assess the effect of inflammation, reflected by IL-6, on the pharmacokinetics of midazolam. Methods Midazolam blood samples were collected once a week between March 31 and April 30 2020. Patients were excluded if they concomitantly received CYP3A4 inhibitors, CYP3A4 inducers and/or continuous renal replacement therapy. Midazolam and metabolites were analyzed with an ultra-performance liquid chromatography–tandem mass spectrometry method. A population pharmacokinetic model was developed, using nonlinear mixed effects modelling. IL-6 and CRP, markers of inflammation, were analyzed as covariates. Results The data were described by a one-compartment model for midazolam and the metabolites 1-OH-midazolam and 1-OH-midazolam-glucuronide. The population mean estimate for midazolam clearance was 6.7 L/h (4.8–8.5 L/h). Midazolam clearance was reduced by increased IL-6 and IL-6 explained more of the variability within our patients than CRP. The midazolam clearance was reduced by 24% (6.7–5.1 L/h) when IL-6 increases from population median 116 to 300 pg/mL. Conclusions Inflammation, reflected by high IL-6, reduces midazolam clearance in critically ill patients with COVID-19. This knowledge may help avoid oversedation, but further research is warranted. Supplementary Information The online version contains supplementary material available at 10.1007/s40262-022-01122-5.
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Affiliation(s)
- Tim J L Smeets
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, PO Box 2040, 3015 GD, Rotterdam, The Netherlands.
| | - Abraham J Valkenburg
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Mathieu van der Jagt
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, PO Box 2040, 3015 GD, Rotterdam, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Diederik A M P J Gommers
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
| | - Sebastian D T Sassen
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, PO Box 2040, 3015 GD, Rotterdam, The Netherlands
| | - Nicole G M Hunfeld
- Department of Hospital Pharmacy, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, PO Box 2040, 3015 GD, Rotterdam, The Netherlands
- Department of Intensive Care Adults, Erasmus MC University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
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