{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T03:57:19Z","timestamp":1791863839907,"version":"4.3.4"},"reference-count":67,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2023,10,16]],"date-time":"2023-10-16T00:00:00Z","timestamp":1697414400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Acta Neuropsychiatr."],"published-print":{"date-parts":[[2025]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:sec id=\"S0924270823000480_as1\">\n\t    <jats:title>Objective:<\/jats:title>\n\t    <jats:p>The cause of cognitive side effects after electroconvulsive therapy (ECT) is largely unknown. Alterations in the blood\u2013brain barrier (BBB) have been considered in several recent ECT studies. We therefore found it worthwhile to perform a systematic review of the literature to examine if electrically induced seizures affect the permeability of the BBB.<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924270823000480_as2\">\n\t    <jats:title>Methods:<\/jats:title>\n\t    <jats:p>PubMed\/MEDLINE and Embase were searched 16 November 2022. Studies with a direct measurement of BBB permeability in animals treated with modified electroconvulsive stimulation (ECS) and in humans treated with ECT were included. Synthesis of results was narrative due to the low number of studies and differences in study designs.<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924270823000480_as3\">\n\t    <jats:title>Results:<\/jats:title>\n\t    <jats:p>Four animal and two human (31 participants) studies were included. In animals, two studies found increased BBB permeability to some smaller molecules after modified ECS, while the two other studies found marginally increased or unchanged permeability to albumin after treatment. In contrast, the human studies did not find increased BBB permeability to smaller molecules or albumin after ECT.<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924270823000480_as4\">\n\t    <jats:title>Conclusion:<\/jats:title>\n\t    <jats:p>Animal but not human studies support increased BBB permeability to some smaller molecules after electrically induced seizures. However, this conclusion is confined by the low number of studies and the lack of studies applying state-of-the-art methods. More studies using modern approaches to measuring of BBB permeability are warranted.<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924270823000480_as5\">\n\t    <jats:title>Funding and Registration:<\/jats:title>\n\t    <jats:p>The study was founded by <jats:italic>Mental Health Services in the Capital Region of Denmark<\/jats:italic> (grant number 61151-05) and was registered on PROSPERO before data extraction was initiated (CRD42022331385).<\/jats:p>\n\t  <\/jats:sec>","DOI":"10.1017\/neu.2023.48","type":"journal-article","created":{"date-parts":[[2023,10,16]],"date-time":"2023-10-16T10:04:28Z","timestamp":1697450668000},"update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":5,"title":["Blood\u2013brain barrier permeability and electroconvulsive therapy: a systematic review"],"prefix":"10.1017","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3302-3335","authenticated-orcid":false,"given":"Christoffer 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