{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,25]],"date-time":"2026-04-25T09:57:57Z","timestamp":1777111077381,"version":"3.51.4"},"reference-count":66,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2021,3,26]],"date-time":"2021-03-26T00:00:00Z","timestamp":1616716800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cancers"],"abstract":"<jats:p>Liver radioembolization is a treatment option for unresectable liver cancers, performed by infusion of 90Y or 166Ho loaded spheres in the hepatic artery. As tumoral cells are mainly perfused via the liver artery unlike hepatic lobules, a twofold tumor to normal liver dose ratio is commonly obtained. To improve tumoral cell killing while preserving lobules, co-infusion of arterial vasoconstrictor has been proposed but with limited success: the hepatic arterial buffer response (HABR) and hepatic vascular escape mechanism hamper the arterioles vasoconstriction. The proposed project aims to take benefit from the HABR by co-infusing a mesenteric arterial vasodilator: the portal flow enhancement inducing the vasoconstriction of the intra sinusoids arterioles barely impacts liver tumors that are mainly fed by novel and anarchic external arterioles. Animal studies were reviewed and dopexamine was identified as a promising safe candidate, reducing by four the hepatic lobules arterial flow. A clinical trial design is proposed. A four to sixfold improvement of the tumoral to normal tissue dose ratio is expected, pushing the therapy towards a real curative intention, especially in HCC where ultra-selective spheres delivery is often not possible.<\/jats:p>","DOI":"10.3390\/cancers13071537","type":"journal-article","created":{"date-parts":[[2021,3,26]],"date-time":"2021-03-26T13:17:53Z","timestamp":1616764673000},"page":"1537","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Hepatic Arterial Buffer Response in Liver Radioembolization and Potential Use for Improved Cancer Therapy"],"prefix":"10.3390","volume":"13","author":[{"given":"Stephan","family":"Walrand","sequence":"first","affiliation":[{"name":"Nuclear Medicine Department, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9434-751X","authenticated-orcid":false,"given":"Michel","family":"Hesse","sequence":"additional","affiliation":[{"name":"Nuclear Medicine Department, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7725-2527","authenticated-orcid":false,"given":"Philippe","family":"d\u2019Abadie","sequence":"additional","affiliation":[{"name":"Nuclear Medicine Department, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fran\u00e7ois","family":"Jamar","sequence":"additional","affiliation":[{"name":"Nuclear Medicine Department, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.jvir.2016.09.024","article-title":"Society of Interventional Radiology Standards of Practice Committee: Radioembolization of hepatic malignancies: Background, quality improvement guidelines, and future directions","volume":"28","author":"Padia","year":"2017","journal-title":"J. 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