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Pouyatos B, Nemoz C, Chabrol T, Potez M, Bräuer E, Renaud L, Pernet-Gallay K, Estève F, David O, Kahane P, Laissue JA, Depaulis A, Serduc R. Synchrotron X-ray microtransections: a non invasive approach for epileptic seizures arising from eloquent cortical areas. Sci Rep 2016; 6:27250. [PMID: 27264273 PMCID: PMC4893707 DOI: 10.1038/srep27250] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 05/13/2016] [Indexed: 11/09/2022] Open
Abstract
Synchrotron-generated X-ray (SRX) microbeams deposit high radiation doses to submillimetric targets whilst minimizing irradiation of neighboring healthy tissue. We developed a new radiosurgical method which demonstrably transects cortical brain tissue without affecting adjacent regions. We made such image-guided SRX microtransections in the left somatosensory cortex in a rat model of generalized epilepsy using high radiation doses (820 Gy) in thin (200 μm) parallel slices of tissue. This procedure, targeting the brain volume from which seizures arose, altered the abnormal neuronal activities for at least 9 weeks, as evidenced by a decrease of seizure power and coherence between tissue slices in comparison to the contralateral cortex. The brain tissue located between transections stayed histologically normal, while the irradiated micro-slices remained devoid of myelin and neurons two months after irradiation. This pre-clinical proof of concept highlights the translational potential of non-invasive SRX transections for treating epilepsies that are not eligible for resective surgery.
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Affiliation(s)
- B Pouyatos
- Inserm, U1216, F-38000 Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France.,Synapcell S.A.S - Bâtiment Biopolis - 5 avenue du Grand Sablon, La Tronche, France
| | | | - T Chabrol
- Univ. Grenoble Alpes, EA RSRM, F-38000 Grenoble, France
| | - M Potez
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France
| | | | - L Renaud
- CNRS; CE2F PRIM UMS3537; Marseille, France.,Aix Marseille Université; Centre d'Exploration Fonctionnelle et de Formation; France
| | - K Pernet-Gallay
- Inserm, U1216, F-38000 Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France
| | - F Estève
- Univ. Grenoble Alpes, EA RSRM, F-38000 Grenoble, France
| | - O David
- Inserm, U1216, F-38000 Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France
| | - P Kahane
- Inserm, U1216, F-38000 Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France.,CHU Grenoble Alpes, F-38000 Grenoble, France
| | | | - A Depaulis
- Inserm, U1216, F-38000 Grenoble, France.,Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, F-38000 Grenoble, France
| | - R Serduc
- Univ. Grenoble Alpes, EA RSRM, F-38000 Grenoble, France
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