Collateral effects of targeting the nucleus pulposus via a transpedicular or transannular surgical route: a combined X-ray, MRI, and histological long-term descriptive study in sheep

Autor: Decante, Cyrille, Clouet, Johann, Hamel, Antoine, Le Fournier, Luc, Gauthier, Olivier, ROULEAU, Dominique M., Lesoeur, Julie, Halgand, Boris, Levisage, Catherine, Guicheux, Jérome, Fusellier, Marion
Přispěvatelé: Jehan, Frederic, Regenerative Medicine and Skeleton research lab (RMeS), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), Service de chirurgie infantile [CHU Nantes], Centre hospitalier universitaire de Nantes (CHU Nantes), Université de Nantes - UFR Odontologie, Université de Nantes (UN), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, PHU 11 Pharmacie [CHU Nantes] (Pharmacie Centrale), Service de neurochirurgie, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS), PHU 4 OTONN, Regenerative Medicine and Skeleton (RMeS), École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: European Spine Journal
European Spine Journal, Springer Verlag, 2020, Online ahead of
ISSN: 0940-6719
1432-0932
Popis: International audience; Purpose: In the context of regenerative medicine strategies, based in particular on the injection of regenerative cells, biological factors, or biomaterials into the nucleus pulposus (NP), two main routes are used: the transpedicular approach (TPA) and the transannular approach (TAA). The purpose of our study was to compare the long-term consequences of the TPA and the TAA on intervertebral disc (IVD) health through a longitudinal follow-up in an ovine model.Methods: The TPA and the TAA were performed on 12 IVDs from 3 sheep. Six discs were left untreated and used as controls. The route and injection feasibility, as well as the IVD environment integrity, were assessed by MRI (T2-weighted signal intensity), micro-CT scan, and histological analyses (Boos' scoring). The sheep were assessed at 1, 3, and 7 months.Results: Both the TPA and the TAA allowed access to the NP. They both induced NP degeneration, as evidenced by a decrease in the T2wsi and an increase in the Boos' scores. The TPA led to persistent end-plate defects and herniation of NP tissue (Schmorl's node-like) after 7 months as well as the presence of osseous fragments in the NP.Conclusions: The TPA induced more severe lesions in IVDs and vertebrae compared to the TAA. The lesions induced by the TPA are reason to consider whether or not this route is optimal for studying IVD regenerative medicine approaches.
Databáze: OpenAIRE
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