PMID- 33869238 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210421 IS - 2296-858X (Print) IS - 2296-858X (Electronic) IS - 2296-858X (Linking) VI - 8 DP - 2021 TI - Pharmacokinetic/Pharmacodynamic Dosage Individualization of Suppressive Beta-Lactam Therapy Administered by Subcutaneous Route in Patients With Prosthetic Joint Infection. PG - 583086 LID - 10.3389/fmed.2021.583086 [doi] LID - 583086 AB - Suppressive parenteral antibiotic therapy with beta-lactams may be necessary in patients with Gram-negative bone and joint infection (BJI). Subcutaneous drug administration can facilitate this therapy in outpatient setting, but there is limited information about this practice. We have developed an original approach for drug dosing in this context, based on therapeutic drug monitoring (TDM) and pharmacokinetic/pharmacodynamic (PK/PD) principles. The objective of this study was to describe our approach and its first results in a case series. We analyzed data from patients who received suppressive antibiotic therapy by subcutaneous (SC) route with beta-lactams as salvage therapy for prosthetic joint infection (PJI) and had TDM with PK/PD-based dose adjustment. Ten patients (six women and four men with a mean age of 77 years) were included from January 2017 to May 2020. The drugs administered by SC route were ceftazidime (n = 4), ertapenem (n = 4), and ceftriaxone (n = 2). In each patient, PK/PD-guided dosage individualization was performed based on TDM and minimum inhibitory concentration (MIC) measurements. The dose interval could be prolonged from twice daily to thrice weekly in some patients, while preserving the achievement of PK/PD targets. The infection was totally controlled by the strategy in nine out the 10 patients during a median follow-up of 1,035 days (~3 years). No patient acquired carbapenem-resistant Gram-negative bacteria during the follow-up. One patient presented treatment failure with acquired drug resistance under therapy, which could be explained by late MIC determination and insufficient exposure, retrospectively. To conclude, our innovative approach, based on model-based TDM, MIC determination, and individualized PK/PD goals, facilitates, and optimizes suppressive outpatient beta-lactam therapy administered by SC route for PJI. These encouraging results advocate for larger clinical evaluation. CI - Copyright (c) 2021 Goutelle, Conrad, Pouderoux, Braun, Laurent, Gagnieu, Cohen, Guitton, Valour and Ferry. FAU - Goutelle, Sylvain AU - Goutelle S AD - Hospices Civils de Lyon, Groupement Hospitalier Nord, Service de Pharmacie, Lyon, France. AD - Univ Lyon, Universite Lyon 1, ISPB, Faculte de Pharmacie de Lyon, Lyon, France. AD - Univ Lyon, Universite Lyon 1, UMR CNRS 5558, Laboratoire de Biometrie et Biologie Evolutive, Villeurbanne, France. AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. FAU - Conrad, Anne AU - Conrad A AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. AD - Service des maladies infectieuses et tropicales, Hopital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. AD - Universite Claude Bernard Lyon 1, Lyon, France. AD - CIRI-Centre International de Recherche en Infectiologie, Inserm U1111, Universite Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Superieure de Lyon, Univ Lyon, Lyon, France. FAU - Pouderoux, Cecile AU - Pouderoux C AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. AD - Service des maladies infectieuses et tropicales, Hopital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. FAU - Braun, Evelyne AU - Braun E AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. AD - Service des maladies infectieuses et tropicales, Hopital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. FAU - Laurent, Frederic AU - Laurent F AD - Univ Lyon, Universite Lyon 1, ISPB, Faculte de Pharmacie de Lyon, Lyon, France. AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. AD - CIRI-Centre International de Recherche en Infectiologie, Inserm U1111, Universite Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Superieure de Lyon, Univ Lyon, Lyon, France. AD - Institut des Agents Infectieux, Laboratoire de bacteriologie, Centre National de reference des staphylocoques, Hopital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. FAU - Gagnieu, Marie-Claude AU - Gagnieu MC AD - Hospices Civils de Lyon, Groupement Hospitalier Sud, Service de Biochimie et Biologie Moleculaire, UM Pharmacologie-Toxicologie, Lyon, France. FAU - Cohen, Sabine AU - Cohen S AD - Hospices Civils de Lyon, Groupement Hospitalier Sud, Service de Biochimie et Biologie Moleculaire, UM Pharmacologie-Toxicologie, Lyon, France. FAU - Guitton, Jerome AU - Guitton J AD - Univ Lyon, Universite Lyon 1, ISPB, Faculte de Pharmacie de Lyon, Lyon, France. AD - Hospices Civils de Lyon, Groupement Hospitalier Sud, Service de Biochimie et Biologie Moleculaire, UM Pharmacologie-Toxicologie, Lyon, France. FAU - Valour, Florent AU - Valour F AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. AD - Service des maladies infectieuses et tropicales, Hopital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. AD - Universite Claude Bernard Lyon 1, Lyon, France. AD - CIRI-Centre International de Recherche en Infectiologie, Inserm U1111, Universite Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Superieure de Lyon, Univ Lyon, Lyon, France. FAU - Ferry, Tristan AU - Ferry T AD - Centre interregional de reference pour la prise en charge des infections osteo-articulaires complexes (CRIOAc Lyon), Hospices Civils de Lyon, Lyon, France. AD - Service des maladies infectieuses et tropicales, Hopital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. AD - Universite Claude Bernard Lyon 1, Lyon, France. AD - CIRI-Centre International de Recherche en Infectiologie, Inserm U1111, Universite Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Superieure de Lyon, Univ Lyon, Lyon, France. LA - eng PT - Journal Article DEP - 20210331 PL - Switzerland TA - Front Med (Lausanne) JT - Frontiers in medicine JID - 101648047 PMC - PMC8044368 OTO - NOTNLM OT - antimicrobial therapy OT - beta-lactam OT - pharmacodynamics OT - pharmacokinetics OT - prosthetic-joint infection OT - subcutaneous administration COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/04/20 06:00 MHDA- 2021/04/20 06:01 PMCR- 2021/03/31 CRDT- 2021/04/19 06:33 PHST- 2020/07/14 00:00 [received] PHST- 2021/02/18 00:00 [accepted] PHST- 2021/04/19 06:33 [entrez] PHST- 2021/04/20 06:00 [pubmed] PHST- 2021/04/20 06:01 [medline] PHST- 2021/03/31 00:00 [pmc-release] AID - 10.3389/fmed.2021.583086 [doi] PST - epublish SO - Front Med (Lausanne). 2021 Mar 31;8:583086. doi: 10.3389/fmed.2021.583086. eCollection 2021.