Journal article
Assessment of Gadobutrol Safety in Combination with Ionizing Radiation Using a Preclinical MRI-Guided Radiotherapy Model
Radiation research, Vol.195(3), pp.230-234
03/01/2021
DOI: 10.1667/RADE-20-00199.1
PMCID: PMC8011992
PMID: 33347596
Abstract
MR-linac technology enhances the precision of therapeutic radiation by clarifying the tumor-normal tissue interface and provides the potential for adaptive treatment planning. Accurate delineation of tumors on diagnostic magnetic resonance imaging (MRI) frequently requires gadolinium-based contrast agents (GBCAs). Despite generally being considered safe, previous literature suggests that GBCAs are capable of contrast-induced acute kidney injury (AKI). It is unclear if the risk for AKI is enhanced when GBCAs are administered concurrently with ionizing radiotherapy. During irradiation, gadolinium may be liberated from its chelator which may induce AKI. The goal of this work was to determine if radiation combined with GBCAs increased the incidence of AKI. Using a preclinical MRI-guided irradiation system, where MRI acquisitions and radiation delivery are performed in rapid succession, tumor-bearing mice with normal kidney function were injected with GBCA and treated with 2, 8 or 18 Gy irradiation. Renal function was assessed on days three and seven postirradiation to assess for AKI. No clinically relevant changes in blood urea nitrogen and creatinine were observed in any combination of GBCA and radiation dose. From these data, we conclude that GBCA in combination with radiation does not increase the risk for AKI in mice. Additional investigation of multiple doses of GBCA administered concurrently with irradiation is warranted to evaluate the risk of chronic kidney injury.
Details
- Title: Subtitle
- Assessment of Gadobutrol Safety in Combination with Ionizing Radiation Using a Preclinical MRI-Guided Radiotherapy Model
- Creators
- Michael S Petronek - Department of Radiation Oncology, University of Iowa, Iowa City, IowaEmily J Steinbach - Department of Radiation Oncology, University of Iowa, Iowa City, IowaAmanda L Kalen - Department of Radiation Oncology, University of Iowa, Iowa City, IowaZachariah J Builta - Department of Radiation Oncology, University of Iowa, Iowa City, IowaCameron M Callaghan - Department of Radiation Oncology, University of Iowa, Iowa City, IowaDan E Hyer - Department of Radiation Oncology, University of Iowa, Iowa City, IowaDouglas R Spitz - Department of Radiation Oncology, University of Iowa, Iowa City, IowaRyan T Flynn - Department of Radiation Oncology, University of Iowa, Iowa City, IowaJohn M Buatti - Department of Radiation Oncology, University of Iowa, Iowa City, IowaVincent A Magnotta - Department of Radiology, University of Iowa, Iowa City, IowaDiana Zepeda-Orozco - Department of Pediatrics, The Ohio State University, Columbus, OhioJoël J St-Aubin - Department of Radiation Oncology, University of Iowa, Iowa City, IowaBryan G Allen - Department of Radiation Oncology, University of Iowa, Iowa City, Iowa
- Resource Type
- Journal article
- Publication Details
- Radiation research, Vol.195(3), pp.230-234
- DOI
- 10.1667/RADE-20-00199.1
- PMID
- 33347596
- PMCID
- PMC8011992
- NLM abbreviation
- Radiat Res
- ISSN
- 0033-7587
- eISSN
- 1938-5404
- Publisher
- United States
- Grant note
- T32 CA078586 / NCI NIH HHS R01 CA182804 / NCI NIH HHS P01 CA217797 / NCI NIH HHS P30 CA086862 / NCI NIH HHS R01 CA169046 / NCI NIH HHS
- Language
- English
- Date published
- 03/01/2021
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology; Psychiatry; Nephrology, Dialysis and Transplantation; Stead Family Department of Pediatrics; Pathology; Iowa Neuroscience Institute; Radiation Oncology; Neurosurgery; Otolaryngology
- Record Identifier
- 9984066136102771
Metrics
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