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Impaired glymphatic perfusion after strokes revealed by contrast-enhanced MRI: a new target for fibrinolysis?
Gaberel, Thomas; Gakuba, Clement; Goulay, Romain; Martinez De Lizarrondo, Sara; Hanouz, Jean-Luc; Emery, Evelyne; Touze, Emmanuel; Vivien, Denis; Gauberti, Maxime.
Afiliação
  • Gaberel T; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Gakuba C; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Goulay R; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Martinez De Lizarrondo S; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Hanouz JL; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Emery E; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Touze E; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Vivien D; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
  • Gauberti M; From INSERM, INSERM UMR-S U919, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP Cyceron, University Caen, Caen, France (T.G., C.G., R.G., S.M.D.L., E.E., E.T., D.V., M.G.); and Departments of Neurosurgery (T.G., E.E.), Anesthesiology and Critical Care Medicine (C.G., J.-L.H.), an
Stroke ; 45(10): 3092-6, 2014 Oct.
Article em En | MEDLINE | ID: mdl-25190438
BACKGROUND AND PURPOSE: The aim of the present study was to investigate the impact of different stroke subtypes on the glymphatic system using MRI. METHODS: We first improved and characterized an in vivo protocol to measure the perfusion of the glymphatic system using MRI after minimally invasive injection of a gadolinium chelate within the cisterna magna. Then, the integrity of the glymphatic system was evaluated in 4 stroke models in mice including subarachnoid hemorrhage (SAH), intracerebral hemorrhage, carotid ligature, and embolic ischemic stroke. RESULTS: We were able to reliably evaluate the glymphatic system function using MRI. Moreover, we provided evidence that the glymphatic system was severely impaired after SAH and in the acute phase of ischemic stroke, but was not altered after carotid ligature or in case of intracerebral hemorrhage. Notably, this alteration in glymphatic perfusion reduced brain clearance rate of low-molecular-weight compounds. Interestingly, glymphatic perfusion after SAH can be improved by intracerebroventricular injection of tissue-type plasminogen activator. Moreover, spontaneous arterial recanalization was associated with restoration of the glymphatic function after embolic ischemic stroke. CONCLUSIONS: SAH and acute ischemic stroke significantly impair the glymphatic system perfusion. In these contexts, injection of tissue-type plasminogen activator either intracerebroventricularly to clear perivascular spaces (for SAH) or intravenously to restore arterial patency (for ischemic stroke) may improve glymphatic function.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Hemorragia Subaracnóidea / Imageamento por Ressonância Magnética / Acidente Vascular Cerebral Limite: Animals Idioma: En Ano de publicação: 2014 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Hemorragia Subaracnóidea / Imageamento por Ressonância Magnética / Acidente Vascular Cerebral Limite: Animals Idioma: En Ano de publicação: 2014 Tipo de documento: Article