Article (Périodiques scientifiques)
Lack of functional normalisation of tumour vessels following anti-angiogenic therapy in glioblastoma.
Obad, Nina; Espedal, Heidi; Jirik, Radovan et al.
2018In Journal of Cerebral Blood Flow and Metabolism, 38 (10), p. 1741-1753
Peer reviewed vérifié par ORBi
 

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obad-et-al-2017-lack-of-functional-normalisation-of-tumour-vessels-following-anti-angiogenic-therapy-in-glioblastoma.pdf
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Détails



Mots-clés :
Angiogenesis Inhibitors; 2S9ZZM9Q9V (Bevacizumab); Angiogenesis Inhibitors/pharmacology; Animals; Bevacizumab/pharmacology; Brain Neoplasms/pathology; Female; Glioblastoma/pathology; Humans; Male; Mice, Nude; Neovascularization, Pathologic/pathology; Xenograft Model Antitumor Assays; Angiogenesis; VEGF; bevacizumab; glioblastoma; hypoxia; perfusion
Résumé :
[en] Neo-angiogenesis represents an important factor for the delivery of oxygen and nutrients to a growing tumour, and is considered to be one of the main pathodiagnostic features of glioblastomas (GBM). Anti-angiogenic therapy by vascular endothelial growth factor (VEGF) blocking agents has been shown to lead to morphological vascular normalisation resulting in a reduction of contrast enhancement as seen by magnetic resonance imaging (MRI). Yet the functional consequences of this normalisation and its potential for improved delivery of cytotoxic agents to the tumour are not known. The presented study aimed at determining the early physiologic changes following bevacizumab treatment. A time series of perfusion MRI and hypoxia positron emission tomography (PET) scans were acquired during the first week of treatment, in two human GBM xenograft models treated with either high or low doses of bevacizumab. We show that vascular morphology was normalised over the time period investigated, but vascular function was not improved, resulting in poor tumoural blood flow and increased hypoxia.
Disciplines :
Oncologie
Auteur, co-auteur :
Obad, Nina;  1 Department of Biomedecine, University of Bergen, Bergen, Norway. ; 2 Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway. ; 3 KG Jebsen Brain Tumor research Center, University of Bergen, Bergen, Norway.
Espedal, Heidi;  1 Department of Biomedecine, University of Bergen, Bergen, Norway. ; 3 KG Jebsen Brain Tumor research Center, University of Bergen, Bergen, Norway.
Jirik, Radovan;  4 Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic.
Sakariassen, Per Oystein;  1 Department of Biomedecine, University of Bergen, Bergen, Norway.
Brekke Rygh, Cecilie;  1 Department of Biomedecine, University of Bergen, Bergen, Norway. ; 5 Bergen University College, Bergen, Norway.
Lund-Johansen, Morten;  2 Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway. ; 6 Department of Clinical Science, University of Bergen, Bergen, Norway.
Taxt, Torfinn;  1 Department of Biomedecine, University of Bergen, Bergen, Norway.
NICLOU, Simone P. ;  3 KG Jebsen Brain Tumor research Center, University of Bergen, Bergen, Norway. ; 7 Norlux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, Luxembourg, Luxembourg.
Bjerkvig, Rolf;  1 Department of Biomedecine, University of Bergen, Bergen, Norway. ; 3 KG Jebsen Brain Tumor research Center, University of Bergen, Bergen, Norway. ; 7 Norlux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, Luxembourg, Luxembourg.
Keunen, Olivier;  7 Norlux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, Luxembourg, Luxembourg.
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Lack of functional normalisation of tumour vessels following anti-angiogenic therapy in glioblastoma.
Date de publication/diffusion :
octobre 2018
Titre du périodique :
Journal of Cerebral Blood Flow and Metabolism
ISSN :
0271-678X
eISSN :
1559-7016
Maison d'édition :
SAGE, Thousand Oaks, Etats-Unis - Californie
Volume/Tome :
38
Fascicule/Saison :
10
Pagination :
1741-1753
Peer reviewed :
Peer reviewed vérifié par ORBi
Disponible sur ORBilu :
depuis le 21 février 2024

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