ArticleActa oncologica (Stockholm, Sweden)2015
Detection of electroporation-induced membrane permeabilization states in the brain using diffusion-weighted MRI.
Article in Acta oncologica (Stockholm, Sweden), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.
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Who cites it
5 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- A Systematic Review about Imaging and Histopathological Findings for Detecting and Evaluating Electroporation Based Treatments Response.International journal of environmental research and public health · 2021Pooled it
- Assessment of Ablation Therapy in Pancreatic Cancer: The Radiologist's Challenge.Frontiers in oncology · 2020Pooled it
- Micro/nanosystems for controllable drug delivery to the brain.Innovation (Cambridge (Mass.)) · 2024Review
- Electrotherapies for Glioblastoma.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021Review
- Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTissue permeabilization by electroporation (EP) is a promising technique to treat certain cancers. Non-invasive methods for verification of induced permeabilization are important, especially in deep-seated cancers. In this study we evaluated diffusion-weighted magnetic resonance imaging (DW-MRI) as a quantitative method for detecting EP-induced membrane permeabilization of brain tissue using a rat brain model. MATERIAL AND
methodsFifty-four anesthetized Sprague-Dawley male rats were electroporated in the right hemisphere, using different voltage levels to induce no permeabilization (NP), transient membrane permeabilization (TMP), and permanent membrane permeabilization (PMP), respectively. DW-MRI was acquired 5 minutes, 2 hours, 24 hours and 48 hours after EP. Histology was performed for validation of the permeabilization states. Tissue content of water, Na+, K+, Ca2+, and extracellular volume were determined. The Kruskal-Wallis test was used to compare the DW-MRI parameters, apparent diffusion coefficient (ADC) and kurtosis, at different voltage levels. The two-sample Mann- Whitney test with Holm's Bonferroni correction was used to identify pairs of significantly different groups. The study was approved by the Danish Animal Experiments Inspectorate. RESULTS AND
conclusionResults showed significant difference in the ADC between TMP and PMP at 2 hours (p<0.001) and 24 hours (p<0.05) after EP. Kurtosis was significantly increased both at TMP (p<0.05) and PMP (p<0.001) 5 minutes after EP, compared to NP. Kurtosis was also significantly higher at 24 hours (p<0.05) and 48 hours (p<0.05) at PMP compared to NP. Physiological parameters indicated correlation with the permeabilization states, supporting the DW-MRI findings. We conclude that DW-MRI is capable of detecting EP-induced permeabilization of brain tissue and to some extent of differentiating NP, TMP and PMP using appropriate scan timing.
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