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Lebrun F, Levard D, Lemarchand E, Yetim M, Furon J, Potzeha F, Marie P, Lesept F, Blanc M, Haelewyn B, Rubio M, Letourneur A, Violle N, Orset C, Vivien D. Improving stroke outcomes in hyperglycemic mice by modulating tPA/NMDAR signaling to reduce inflammation and hemorrhages. Blood Adv 2024; 8:1330-1344. [PMID: 38190586 PMCID: PMC10943589 DOI: 10.1182/bloodadvances.2023011744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/15/2023] [Accepted: 12/17/2023] [Indexed: 01/10/2024] Open
Abstract
ABSTRACT The pharmacological intervention for ischemic stroke hinges on intravenous administration of the recombinant tissue-type plasminogen activator (rtPA, Alteplase/Actilyse) either as a standalone treatment or in conjunction with thrombectomy. However, despite its clinical significance, broader use of rtPA is constrained because of the risk of hemorrhagic transformations (HTs). Furthermore, the presence of diabetes or chronic hyperglycemia is associated with an elevated risk of HT subsequent to thrombolysis. This detrimental impact of tPA on the neurovascular unit in patients with hyperglycemia has been ascribed to its capacity to induce endothelial N-methyl-D-aspartate receptor (NMDAR) signaling, contributing to compromised blood-brain barrier integrity and neuroinflammatory processes. In a mouse model of thromboembolic stroke with chronic hyperglycemia, we assessed the effectiveness of rtPA and N-acetylcysteine (NAC) as thrombolytic agents. We also tested the effect of blocking tPA/NMDAR signaling using a monoclonal antibody, Glunomab. Magnetic resonance imaging, speckle contrast imaging, flow cytometry, and behavioral tasks were used to evaluate stroke outcomes. In hyperglycemic animals, treatment with rtPA resulted in lower recanalization rates and increased HTs. Conversely, NAC treatment reduced lesion sizes while mitigating HTs. After a single administration, either in standalone or combined with rtPA-induced thrombolysis, Glunomab reduced brain lesion volumes, HTs, and neuroinflammation after stroke, translating into improved neurological outcomes. Additionally, we demonstrated the therapeutic efficacy of Glunomab in combination with NAC or as a standalone strategy in chronic hyperglycemic animals. Counteracting tPA-dependent endothelial NMDAR signaling limits ischemic damages induced by both endogenous and exogenous tPA, including HTs and inflammatory processes after ischemic stroke in hyperglycemic animals.
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Affiliation(s)
- Florent Lebrun
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
- STROK@LLIANCE, ETAP-Lab, Caen, France
| | - Damien Levard
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | - Eloïse Lemarchand
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | - Mervé Yetim
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | - Jonathane Furon
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | - Fanny Potzeha
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | - Pauline Marie
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | | | | | - Benoit Haelewyn
- GIP Cyceron, Caen, France
- Experimental Stroke Research Platform, Normandie University, CURB, Caen, France
| | - Marina Rubio
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
| | | | | | - Cyrille Orset
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
- Experimental Stroke Research Platform, Normandie University, CURB, Caen, France
| | - Denis Vivien
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, GIP Cyceron, Institute Blood and Brain @ Caen-Normandie, Caen, France
- Experimental Stroke Research Platform, Normandie University, CURB, Caen, France
- Department of Clinical Research, Caen-Normandie University Hospital, Caen, France
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Furon J, Lebrun F, Yétim M, Levard D, Marie P, Orset C, Martinez de Lizarrondo S, Vivien D, Ali C. Parabiosis Discriminates the Circulating, Endothelial, and Parenchymal Contributions of Endogenous Tissue-Type Plasminogen Activator to Stroke. Stroke 2024; 55:747-756. [PMID: 38288607 DOI: 10.1161/strokeaha.123.045048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 01/04/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Intravenous injection of alteplase, a recombinant tPA (tissue-type plasminogen activator) as a thrombolytic agent has revolutionized ischemic stroke management. However, tPA is a more complex enzyme than expected, being for instance able to promote thrombolysis, but at the same time, also able to influence neuronal survival and to affect the integrity of the blood-brain barrier. Accordingly, the respective impact of endogenous tPA expressed/present in the brain parenchyma versus in the circulation during stroke remains debated. METHODS To address this issue, we used mice with constitutive deletion of tPA (tPANull [tPA-deficient mice]) or conditional deletion of endothelial tPA (VECad [vascular endothelial-Cadherin-Cre-recombinase]-Cre∆tPA). We also developed parabioses between tPANull and wild-type mice (tPAWT), anticipating that a tPAWT donor would restore levels of tPA to normal ones, in the circulation but not in the brain parenchyma of a tPANull recipient. Stroke outcomes were investigated by magnetic resonance imaging in a thrombo-embolic or a thrombotic stroke model, induced by local thrombin injection or FeCl3 application on the endothelium, respectively. RESULTS First, our data show that endothelial tPA, released into the circulation after stroke onset, plays an overall beneficial role following thrombo-embolic stroke. Accordingly, after 24 hours, tPANull/tPANull parabionts displayed less spontaneous recanalization and reperfusion and larger infarcts compared with tPAWT/tPAWT littermates. However, when associated to tPAWT littermates, tPANull mice had similar perfusion deficits, but less severe brain infarcts. In the thrombotic stroke model, homo- and hetero-typic parabionts did not differ in the extent of brain damages and did not differentially recanalize and reperfuse. CONCLUSIONS Together, our data reveal that during thromboembolic stroke, endogenous circulating tPA from endothelial cells sustains a spontaneous recanalization and reperfusion of the tissue, thus, limiting the extension of ischemic lesions. In this context, the impact of endogenous parenchymal tPA is limited.
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Affiliation(s)
- Jonathane Furon
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Florent Lebrun
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Mervé Yétim
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Damien Levard
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
- Department of Clinical Research, Caen-Normandie University Hospital, Centre Hospitalier Universitaire (CHU), France (D.V.)
| | - Pauline Marie
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Cyrille Orset
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Sara Martinez de Lizarrondo
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Denis Vivien
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
| | - Carine Ali
- Normandie University, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Groupement d'Intérêt Public (GIP) Cyceron, Institut Blood and Brain @ Caen-Normandie, Caen, France (J.F., F.L., M.Y., D.L., P.M., C.O., S.M.d.L., D.V., C.A.)
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Furon J, Yetim M, Pouettre E, Martinez de Lizarrondo S, Maubert E, Hommet Y, Lebouvier L, Zheng Z, Ali C, Vivien D. Blood tissue Plasminogen Activator (tPA) of liver origin contributes to neurovascular coupling involving brain endothelial N-Methyl-D-Aspartate (NMDA) receptors. Fluids Barriers CNS 2023; 20:11. [PMID: 36737775 PMCID: PMC9896721 DOI: 10.1186/s12987-023-00411-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Regulation of cerebral blood flow (CBF) directly influence brain functions and dysfunctions and involves complex mechanisms, including neurovascular coupling (NVC). It was suggested that the serine protease tissue-type plasminogen activator (tPA) could control CNV induced by whisker stimulation in rodents, through its action on N-methyl-D-Aspartate receptors (NMDARs). However, the origin of tPA and the location and mechanism of its action on NMDARs in relation to CNV remained debated. METHODS Here, we answered these issues using tPANull mice, conditional deletions of either endothelial tPA (VECad-CreΔtPA) or endothelial GluN1 subunit of NMDARs (VECad-CreΔGluN1), parabioses between wild-type and tPANull mice, hydrodynamic transfection-induced deletion of liver tPA, hepatectomy and pharmacological approaches. RESULTS We thus demonstrate that physiological concentrations of vascular tPA, achieved by the bradykinin type 2 receptors-dependent production and release of tPA from liver endothelial cells, promote NVC, through a mechanism dependent on brain endothelial NMDARs. CONCLUSIONS These data highlight a new mechanism of regulation of NVC involving both endothelial tPA and NMDARs.
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Affiliation(s)
- Jonathane Furon
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Mervé Yetim
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Elsa Pouettre
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Sara Martinez de Lizarrondo
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Eric Maubert
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Yannick Hommet
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Laurent Lebouvier
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Ze Zheng
- grid.30760.320000 0001 2111 8460Department of Medicine, Medical College of Wisconsin, Milwaukee, WI USA ,grid.280427.b0000 0004 0434 015XBlood Research Institute, Versiti Blood Center of Wisconsin, Milwaukee, WI USA
| | - Carine Ali
- grid.460771.30000 0004 1785 9671UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074 Caen, France
| | - Denis Vivien
- UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, Bvd Becquerel, BP 5229, 14074, Caen, France. .,Department of Clinical Research, Caen-Normandie University Hospital, Caen, France.
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Zuba V, Furon J, Bellemain-Sagnard M, de Lazarrondo SM, Lebouvier L, Rubio M, Hommet Y, Gauberti M, Vivien D, Ali C. Correction to: The choroid plexus: A door between the blood and the brain for tissue-type plasminogen activator. Fluids Barriers CNS 2022; 19:83. [PMID: 36320083 PMCID: PMC9623990 DOI: 10.1186/s12987-022-00383-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Vincent Zuba
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Jonathane Furon
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Mathys Bellemain-Sagnard
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Sara Martinez de Lazarrondo
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Laurent Lebouvier
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Marina Rubio
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Yannick Hommet
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Maxime Gauberti
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
| | - Denis Vivien
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France ,grid.411149.80000 0004 0472 0160Department of Clinical Research, Caen-Normandie Hospital (CHU), Caen, France
| | - Carine Ali
- grid.412043.00000 0001 2186 4076Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM, UMR-S U1237, Institut Blood and Brain @ CaenNormandie, GIP Cyceron, Boulevard Becquerel, 14074 Caen, France
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Zuba V, Furon J, Bellemain-Sagnard M, Martinez de Lazarrondo S, Lebouvier L, Rubio M, Hommet Y, Gauberti M, Vivien D, Ali C. The choroid plexus: a door between the blood and the brain for tissue-type plasminogen activator. Fluids Barriers CNS 2022; 19:80. [PMID: 36243724 PMCID: PMC9569045 DOI: 10.1186/s12987-022-00378-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022] Open
Abstract
Background In the vascular compartment, the serine protease tissue-type plasminogen activator (tPA) promotes fibrinolysis, justifying its clinical use against vasculo-occlusive diseases. Accumulating evidence shows that circulating tPA (endogenous or exogenous) also controls brain physiopathological processes, like cerebrovascular reactivity, blood–brain barrier (BBB) homeostasis, inflammation and neuronal fate. Whether this occurs by direct actions on parenchymal cells and/or indirectly via barriers between the blood and the central nervous system (CNS) remains unclear. Here, we postulated that vascular tPA can reach the brain parenchyma via the blood-cerebrospinal fluid barrier (BCSFB), that relies on choroid plexus (CP) epithelial cells (CPECs). Methods We produced various reporter fusion proteins to track tPA in primary cultures of CPECs, in CP explants and in vivo in mice. We also investigated the mechanisms underlying tPA transport across the BCSFB, with pharmacological and molecular approaches. Results We first demonstrated that tPA can be internalized by CPECs in primary cultures and in ex vivo CPs explants. In vivo, tPA can also be internalized by CPECs both at their basal and apical sides. After intra-vascular administration, tPA can reach the cerebral spinal fluid (CSF) and the brain parenchyma. Further investigation allowed discovering that the transcytosis of tPA is mediated by Low-density-Lipoprotein Related Protein-1 (LRP1) expressed at the surface of CPECs and depends on the finger domain of tPA. Interestingly, albumin, which has a size comparable to that of tPA, does not normally cross the CPs, but switches to a transportable form when grafted to the finger domain of tPA. Conclusions These findings provide new insights on how vascular tPA can reach the brain parenchyma, and open therapeutic avenues for CNS disorders. Supplementary Information The online version contains supplementary material available at 10.1186/s12987-022-00378-0.
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Affiliation(s)
- Vincent Zuba
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Jonathane Furon
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Mathys Bellemain-Sagnard
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Sara Martinez de Lazarrondo
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Laurent Lebouvier
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Marina Rubio
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Yannick Hommet
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Maxime Gauberti
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France
| | - Denis Vivien
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France.,Department of Clinical Research, Caen-Normandie Hospital (CHU), Caen, France
| | - Carine Ali
- Physiopathology and Imaging of Neurological Disorders, Normandie Univ, UNICAEN, INSERM, INSERM UMR-S U1237, Institut Blood and Brain @ Caen-Normandie, GIP Cyceron, Boulevard Becquerel, 14074, Caen, France.
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Metayer T, Orset C, Ali C, Furon J, Szabla N, Emery E, Vivien D, Gaberel T. Bumetanide lowers acute hydrocephalus in a rat model of subarachnoid hemorrhage. Acta Neurochir (Wien) 2022; 164:499-505. [PMID: 35094147 DOI: 10.1007/s00701-021-05088-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 12/13/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Subarachnoid hemorrhage (SAH) can lead to acute hydrocephalus (AH). AH pathophysiology is classically attributed to an obstruction of the arachnoid granulations by blood. Recent findings in rodents suggest that after intraventricular hemorrhage, AH is related to cerebrospinal fluid (CSF) hypersecretion by the choroid plexus (CP), as it can be reduced by intracerebroventricular (ICV) injection of bumetanide. OBJECTIVE Here, we investigated if and how CSF hypersecretion and/or CSF outflow disorders contribute to post-SAH hydrocephalus. METHODS Ninety-four Wistar rats were used. SAH was induced by the endovascular perforation technique. The presence of AH was confirmed by magnetic resonance imaging (MRI), and rats with AH were randomly assigned to 4 groups: control group, superior sagittal sinus (SSS) thrombosis to block CSF reabsorption, ICV injection of saline, and ICV injection of bumetanide to decrease CSF secretion. Clinical outcome was evaluated with a neuroscore. A second MRI was performed 24 h later to evaluate the ventricular volume. RESULTS Fifty percent of rats that survived SAH induction had AH. Their ventricular volume correlated well to the functional outcome after 24 h (r = 0.803). In rats with AH, 24 h later, ventricular volume remained equally increased in the absence of any further procedure. Similarly, ICV injection of saline or SSS thrombosis had no impact on the ventricular volume. However, ICV injection of bumetanide reduced AH by 35.9% (p = 0.002). CONCLUSION In rodents, post-SAH hydrocephalus is may be due to hypersecretion of CSF by the CP, as it is limited by ICV injection of bumetanide. However, we cannot exclude other mechanisms involved in post-SAH acute hydrocephalus.
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Affiliation(s)
- Thomas Metayer
- Department of Neurosurgery, University Hospital of Caen, 14000, Caen, France.
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France.
| | - Cyrille Orset
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
| | - Carine Ali
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
| | - Jonathane Furon
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
| | - Nicolas Szabla
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
| | - Evelyne Emery
- Department of Neurosurgery, University Hospital of Caen, 14000, Caen, France
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
- Medical School, University of Caen Normandy, 14000, Caen, France
| | - Denis Vivien
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
- Medical School, University of Caen Normandy, 14000, Caen, France
- Department of Clinical Research, Caen-Normandie University Hospital, CHU, 14000, Caen, France
| | - Thomas Gaberel
- Department of Neurosurgery, University Hospital of Caen, 14000, Caen, France
- Normandie Univ, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders," Institut Blood and Brain at Caen-Normandie, Cyceron, 14000, Caen, France
- Medical School, University of Caen Normandy, 14000, Caen, France
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