Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series

Abstract Mycophenolate mofetil has an important role as immunosuppressive agent in solid organ transplant recipients. Exposure to the active mycophenolic acid (MPA) can be monitored using therapeutic drug monitoring. We present three cases in which MPA exposure severely decreased after oral antibiot...

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Main Authors: Mirjam Simoons, Kishan A. T. Naipal, Huib deJong, Caroline M. denHoed, Brenda C. M. deWinter, Midas B. Mulder
Format: Article
Language:English
Published: Wiley 2023-06-01
Series:Pharmacology Research & Perspectives
Subjects:
Online Access:https://doi.org/10.1002/prp2.1103
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author Mirjam Simoons
Kishan A. T. Naipal
Huib deJong
Caroline M. denHoed
Brenda C. M. deWinter
Midas B. Mulder
author_facet Mirjam Simoons
Kishan A. T. Naipal
Huib deJong
Caroline M. denHoed
Brenda C. M. deWinter
Midas B. Mulder
author_sort Mirjam Simoons
collection DOAJ
description Abstract Mycophenolate mofetil has an important role as immunosuppressive agent in solid organ transplant recipients. Exposure to the active mycophenolic acid (MPA) can be monitored using therapeutic drug monitoring. We present three cases in which MPA exposure severely decreased after oral antibiotic coadministration. By diminishing gut bacteria β‐glucuronidase activity, oral antibiotics can prevent deglucuronidation of the inactive MPA‐7‐O‐glucuronide metabolite to MPA and thereby possibly prevent its enterohepatic recirculation. This pharmacokinetic interaction could result in rejection, which makes it clinically relevant in solid organ transplant recipients, especially when therapeutic drug monitoring frequency is low. Routine screening for this interaction, preferably supported by clinical decision support systems, and pragmatic close monitoring of the MPA exposure in cases is advised.
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spelling doaj.art-c0238f5d29d14a3cbb864962b21766102023-06-19T04:55:55ZengWileyPharmacology Research & Perspectives2052-17072023-06-01113n/an/a10.1002/prp2.1103Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case seriesMirjam Simoons0Kishan A. T. Naipal1Huib deJong2Caroline M. denHoed3Brenda C. M. deWinter4Midas B. Mulder5Department of Hospital Pharmacy, ErasmusMC University Medical Center Rotterdam Rotterdam The NetherlandsDepartment of Internal Medicine, ErasmusMC University Medical Center Rotterdam Rotterdam The NetherlandsDepartment of Pediatrics, ErasmusMC Sophia Children's Hospital, University Medical Center Rotterdam Rotterdam The NetherlandsThe ErasmusMC Transplant Institute University Medical Center Rotterdam Rotterdam The NetherlandsDepartment of Hospital Pharmacy, ErasmusMC University Medical Center Rotterdam Rotterdam The NetherlandsDepartment of Hospital Pharmacy, ErasmusMC University Medical Center Rotterdam Rotterdam The NetherlandsAbstract Mycophenolate mofetil has an important role as immunosuppressive agent in solid organ transplant recipients. Exposure to the active mycophenolic acid (MPA) can be monitored using therapeutic drug monitoring. We present three cases in which MPA exposure severely decreased after oral antibiotic coadministration. By diminishing gut bacteria β‐glucuronidase activity, oral antibiotics can prevent deglucuronidation of the inactive MPA‐7‐O‐glucuronide metabolite to MPA and thereby possibly prevent its enterohepatic recirculation. This pharmacokinetic interaction could result in rejection, which makes it clinically relevant in solid organ transplant recipients, especially when therapeutic drug monitoring frequency is low. Routine screening for this interaction, preferably supported by clinical decision support systems, and pragmatic close monitoring of the MPA exposure in cases is advised.https://doi.org/10.1002/prp2.1103drug interactionsenterohepatic circulationmycophenolic acidorgan transplantationpatient safety
spellingShingle Mirjam Simoons
Kishan A. T. Naipal
Huib deJong
Caroline M. denHoed
Brenda C. M. deWinter
Midas B. Mulder
Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series
Pharmacology Research & Perspectives
drug interactions
enterohepatic circulation
mycophenolic acid
organ transplantation
patient safety
title Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series
title_full Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series
title_fullStr Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series
title_full_unstemmed Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series
title_short Oral antibiotics lower mycophenolate mofetil drug exposure, possibly by interfering with the enterohepatic recirculation: A case series
title_sort oral antibiotics lower mycophenolate mofetil drug exposure possibly by interfering with the enterohepatic recirculation a case series
topic drug interactions
enterohepatic circulation
mycophenolic acid
organ transplantation
patient safety
url https://doi.org/10.1002/prp2.1103
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