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Dennys C, Baggio C, Rodrigo R, Roussel F, Kulinich A, Heintzman S, Fox A, Kolb SJ, Shaw PJ, Ethell IM, Pellecchia M, Meyer KC. EphA4 targeting agents protect motor neurons from cell death induced by amyotrophic lateral sclerosis -astrocytes. iScience 2022; 25:104877. [PMID: 36034213 PMCID: PMC9404653 DOI: 10.1016/j.isci.2022.104877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/17/2022] [Accepted: 07/29/2022] [Indexed: 12/02/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a degenerative disease that progressively destroys motor neurons (MNs). Earlier studies identified EphA4, a receptor tyrosine kinase, as a possible disease-modifying gene. The complex interplay between the EphA4 receptor and its ephrin ligands in motor neurons and astrocytes has not yet been fully elucidated and includes a putative pro-apoptotic activity of the unbound receptor compared to ephrin-bound receptor. We recently reported that astrocytes from patients with ALS induce cell death in co-cultured MNs. Here we found that first-generation synthetic EphA4 agonistic agent 123C4, effectively protected MNs when co-cultured with reactive astrocytes from patients with ALS from multiple subgroups (sALS and mutant SOD1). Newer generation and more potent EphA4 agonistic agents 150D4, 150E8, and 150E7 provided effective protection at a lower therapeutic dose. Combined, the data suggest that the development of EphA4 agonistic agents provides potentially a promising therapeutic strategy for patients with ALS.
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Affiliation(s)
- Cassandra Dennys
- Center for Gene Therapy, Nationwide Children’s Hospital, 700 Children’s Drive Columbus, OH 43205, USA
| | - Carlo Baggio
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, 900 University Avenue, Riverside, CA 92521, USA
| | - Rochelle Rodrigo
- Center for Gene Therapy, Nationwide Children’s Hospital, 700 Children’s Drive Columbus, OH 43205, USA
| | - Florence Roussel
- Center for Gene Therapy, Nationwide Children’s Hospital, 700 Children’s Drive Columbus, OH 43205, USA
| | - Anna Kulinich
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, 900 University Avenue, Riverside, CA 92521, USA
| | - Sarah Heintzman
- Department of Neurology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Ashley Fox
- Department of Neurology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Stephen J. Kolb
- Department of Neurology, The Ohio State University Medical Center, Columbus, OH, USA
- Department of Biological Chemistry & Pharmacology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Molecular, Cellular & Developmental Biology Graduate Program, The Ohio State University, Columbus, OH, USA
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Pamela J. Shaw
- Academic Unit of Neurology, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield S10 2HQ, UK
| | - Iryna M. Ethell
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, 900 University Avenue, Riverside, CA 92521, USA
| | - Maurizio Pellecchia
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, 900 University Avenue, Riverside, CA 92521, USA
| | - Kathrin C. Meyer
- Center for Gene Therapy, Nationwide Children’s Hospital, 700 Children’s Drive Columbus, OH 43205, USA
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Lin YL, Nhieu J, Liu PY, Le G, Lee DJ, Wei CW, Lin YW, Oh SH, Lowe D, Wei LN. CRABP1-CaMKII-Agrn regulates the maintenance of neuromuscular junction in spinal motor neuron. Cell Death Differ 2022; 29:1744-1756. [PMID: 35217789 PMCID: PMC9433400 DOI: 10.1038/s41418-022-00959-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 11/08/2022] Open
Abstract
Cellular retinoic acid-binding protein 1 (CRABP1) binds retinoic acid (RA) specifically in the cytoplasm with unclear functions. CRABP1 is highly and specifically expressed in spinal motor neurons (MNs). Clinical and pre-clinical data reveal a potential link between CRABP1 and MN diseases, including the amyotrophic lateral sclerosis (ALS). We established a sequenced MN-muscle co-differentiation system to engineer an in vitro functional 3D NMJ model for molecular studies and demonstrated that CRABP1 in MNs contributes to NMJ formation and maintenance. Consistently, Crabp1 knockout (CKO) mice exhibited an adult-onset ALS-like phenotype with progressively deteriorated NMJs, characterized with behavioral, EchoMRI, electrophysiological, histological, and immunohistochemical studies at 2-20-months old. Mechanistically, CRABP1 suppresses CaMKII activation to regulate neural Agrn expression and downstream muscle LRP4-MuSK signaling, thereby maintaining NMJ. A proof-of-concept was provided by specific re-expression of CRABP1 to rescue Agrn expression and the phenotype. This study identifies CRABP1-CaMKII-Agrn signaling as a physiological pre-synaptic regulator in the NMJ. This study also highlights a potential protective role of CRABP1 in the progression of NMJ deficits in MN diseases.
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Affiliation(s)
- Yu-Lung Lin
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Jennifer Nhieu
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Pei-Yao Liu
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Gengyun Le
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Dong Jun Lee
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Chin-Wen Wei
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Yi-Wei Lin
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Dawn Lowe
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, Medical School, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Li-Na Wei
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA.
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OCT4-induced oligodendrocyte progenitor cells promote remyelination and ameliorate disease. NPJ Regen Med 2022; 7:4. [PMID: 35027563 PMCID: PMC8758684 DOI: 10.1038/s41536-021-00199-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 11/30/2021] [Indexed: 12/23/2022] Open
Abstract
The generation of human oligodendrocyte progenitor cells (OPCs) may be therapeutically valuable for human demyelinating diseases such as multiple sclerosis. Here, we report the direct reprogramming of human somatic cells into expandable induced OPCs (iOPCs) using a combination of OCT4 and a small molecule cocktail. This method enables generation of A2B5+ (an early marker for OPCs) iOPCs within 2 weeks retaining the ability to differentiate into MBP-positive mature oligodendrocytes. RNA-seq analysis revealed that the transcriptome of O4+ iOPCs was similar to that of O4+ OPCs and ChIP-seq analysis revealed that putative OCT4-binding regions were detected in the regulatory elements of CNS development-related genes. Notably, engrafted iOPCs remyelinated the brains of adult shiverer mice and experimental autoimmune encephalomyelitis mice with MOG-induced 14 weeks after transplantation. In conclusion, our study may contribute to the development of therapeutic approaches for neurological disorders, as well as facilitate the understanding of the molecular mechanisms underlying glial development.
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Sisakht M, Khoshdel Z, Mahmoodazdeh A, Shafiee SM, Takhshid MA. Adrenomedullin increases cAMP accumulation and BDNF expression in rat DRG and spinal motor neurons. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:978-985. [PMID: 34712429 PMCID: PMC8528252 DOI: 10.22038/ijbms.2021.54796.12289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 06/23/2021] [Indexed: 11/06/2022]
Abstract
Objectives Adrenomedullin (AM) has high expression in the spinal cord. In this study, we investigated the expression of AM and its receptor components, including calcitonin receptor-like receptor (CLR) and receptor activity modifying proteins (RAMPs) in dorsal root ganglion (DRG) and spinal motor (SM) neurons. Furthermore, the effects of AM on cAMP/cAMP response element-binding protein (CREB), AKT/glycogen synthase kinase-3 beta (GSK-3β) signaling pathways, and expressions of brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) were evaluated. Materials and Methods Rat embryonic DRG and SM neurons were isolated, purified, and cultured. Real-time PCR was used to assess expressions of AM, CLR, and RAMPs. cAMP levels, p-CREB, BDNF, and NT-3 were determined using an enzyme-linked immunosorbent assay. p-AKT and p-GSK-3β levels were determined by western blotting. Real-time PCR showed expressions of AM, CLR, RAMP2, and RAMP3 in both DRG and SM neurons. Results AM increased cAMP accumulation and p-CREB levels in DRG and SM neurons. AM increased p-AKT and p-GSK-3β in DRG, but not SM neurons. AM significantly increased BDNF expression in both DRG and SM neurons. There was also an increase in NT-3 level in both DRG and SM neurons, which is statistically significant in SM neurons. Conclusion These results showed both DRG and SM neurons are targets of AM actions in the spinal cord. An increase in BDNF expression by AM in both DRG and SM neurons suggests the possible beneficial role of AM in protecting, survival, and regeneration of sensory and motor neurons.
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Affiliation(s)
- Mohsen Sisakht
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Khoshdel
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Mahmoodazdeh
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sayed Mohammad Shafiee
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Ali Takhshid
- Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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Wei N, Lu T, Yang L, Dong Y, Liu X. Lipoxin A4 protects primary spinal cord neurons from Erastin-induced ferroptosis by activating the Akt/Nrf2/HO-1 signaling pathway. FEBS Open Bio 2021. [PMID: 34048148 PMCID: PMC8329788 DOI: 10.1002/2211-5463.13203] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/27/2021] [Accepted: 05/25/2021] [Indexed: 12/12/2022] Open
Abstract
Ferroptosis is an iron‐dependent programmed cell death, which participates in the pathogenesis of spinal cord injury (SCI). Our previous study has revealed that Lipoxin A4 (LXA4) exerts a protective role in SCI. Here, we investigated whether LXA4 can protect SCI through inhibiting neuronal ferroptosis. We treated primary spinal cord neurons with Erastin (ferroptosis activator) to induce ferroptosis. Erastin treatment reduced cell viability and enhanced cell death of primary spinal cord neurons, which was rescued by ferrostatin‐1 (ferroptosis inhibitor). Moreover, Erastin repressed glutathione peroxidase 4 (GPX4) expression and the levels of glutathione and cysteine in primary spinal cord neurons. Erastin also enhanced the expression of ferroptosis biomarkers (PTGS2 and ACSL4) and the levels of reactive oxygen species (ROS) in primary spinal cord neurons. The influence conferred by Erastin was effectively abolished by LXA4 treatment. Furthermore, LXA4 enhanced the protein expression of p‐AKT, nuclear factor (erythroid‐derived 2)‐like 2 (Nrf2) and haem‐oxygenase‐1 (HO‐1) in primary spinal cord neurons. LXA4‐mediated inhibition of ferroptosis of primary spinal cord neurons was prohibited by LY294002 (AKT inhibitor), brusatol (Nrf2 inhibitor) or zinc protoporphyrin (HO‐1 inhibitor). In conclusion, this work demonstrated that LXA4 exerted a neuroprotective effect in Erastin‐induced ferroptosis of primary spinal cord neurons by activating the Akt/Nrf2/HO‐1 signaling pathway. Thus, this work provides novel insights into the mechanisms of action of LXA4 in ferroptosis of primary spinal cord neurons and indicates that LXA4 may be a potential therapeutic agent for SCI.
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Affiliation(s)
- Na Wei
- Department of Neurology, Shanghai Tenth People's Hospital Chongming Branch, Shanghai, China
| | - Tan Lu
- Department of Orthopedics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - Libin Yang
- Department of Orthopedics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - Yonghan Dong
- Department of Orthopedics, Xinxiang Central Hospital, China
| | - Xiaotan Liu
- Department of Orthopedics, The Third Affiliated Hospital of Xinxiang Medical University, China
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Achyranthes bidentata polypeptide k enhances the survival, growth and axonal regeneration of spinal cord motor neurons in vitro. Neuroreport 2021; 32:518-524. [PMID: 33788819 DOI: 10.1097/wnr.0000000000001621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Achyranthes bidentata polypeptide k (ABPPk), a powerful active component from a traditional Chinese medicinal herb-Achyranthes bidentata Bl., has exhibited promising neuroprotective activity due to its multiple-targeting capability. However, the effect of ABPPk on the survival, growth and axonal regeneration of spinal cord motor neurons remains unclear. Here, a modified method, which is more optimized for embryonic cells in ambient carbon dioxide levels, was used for acquisition of rat embryonic spinal cord motor neurons with high survival and purity. ABPPk concentration-dependently enhanced the neuronal viability and promoted the neurite outgrowth. Co-culture of motor neurons and skeletal myocytes model indicated that ABPPk enhanced the neuromuscular junction development and maturation. A microfluidic axotomy model was further established for the axonal disconnection, and ABPPk significantly accelerated the axonal regeneration of motor neurons. Furthermore, we demonstrated that the upregulation of three neurofilament protein subunits in motor neurons might be relevant to the mechanisms of the growth-promoting effect of ABPPk. Our findings provide an experimental and theoretical basis for the development of ABPPk as a potential application in the development of treatment strategy for nerve injury diseases.
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Germeys C, Vandoorne T, Bercier V, Van Den Bosch L. Existing and Emerging Metabolomic Tools for ALS Research. Genes (Basel) 2019; 10:E1011. [PMID: 31817338 PMCID: PMC6947647 DOI: 10.3390/genes10121011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/23/2019] [Accepted: 12/03/2019] [Indexed: 12/12/2022] Open
Abstract
Growing evidence suggests that aberrant energy metabolism could play an important role in the pathogenesis of amyotrophic lateral sclerosis (ALS). Despite this, studies applying advanced technologies to investigate energy metabolism in ALS remain scarce. The rapidly growing field of metabolomics offers exciting new possibilities for ALS research. Here, we review existing and emerging metabolomic tools that could be used to further investigate the role of metabolism in ALS. A better understanding of the metabolic state of motor neurons and their surrounding cells could hopefully result in novel therapeutic strategies.
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Affiliation(s)
- Christine Germeys
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven—University of Leuven, 3000 Leuven, Belgium; (C.G.); (T.V.); (V.B.)
- VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, 3000 Leuven, Belgium
| | - Tijs Vandoorne
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven—University of Leuven, 3000 Leuven, Belgium; (C.G.); (T.V.); (V.B.)
- VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, 3000 Leuven, Belgium
| | - Valérie Bercier
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven—University of Leuven, 3000 Leuven, Belgium; (C.G.); (T.V.); (V.B.)
- VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, 3000 Leuven, Belgium
| | - Ludo Van Den Bosch
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven—University of Leuven, 3000 Leuven, Belgium; (C.G.); (T.V.); (V.B.)
- VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, 3000 Leuven, Belgium
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Kleene R, Loers G, Jakovcevski I, Mishra B, Schachner M. Histone H1 improves regeneration after mouse spinal cord injury and changes shape and gene expression of cultured astrocytes. Restor Neurol Neurosci 2019; 37:291-313. [PMID: 31227672 DOI: 10.3233/rnn-190903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND We have shown that histone H1 is a binding partner for polysialic acid (PSA) and that it improves functional recovery, axon regrowth/sprouting, and target reinnervation after mouse femoral nerve injury. OBJECTIVE Here, we analyzed whether histone H1 affects functional recovery, axon regrowth/sprouting, and target reinnervation after spinal cord injury of adult mice. Furthermore, we tested in vitro histone H1's effect on astrocytic gene expression, cell shape and migration as well as on cell survival of cultured motoneurons. METHODS We applied histone H1 to compressed spinal cord and determined functional recovery and number of fibrillary acidic protein (GFAP)- and neuron-glial antigen 2 (NG2)- positive glial cells, which contribute to glial scarring. Histone H1's effect on migration of astrocytes, astrocytic gene expression and motoneuronal survival was determined using scratch-wounded astroglial monolayer cultures, astrocyte cultures for microarray analysis, and motoneuron cell culture under oxidative stress conditions, respectively. RESULTS Histone H1 application improves locomotor functions and enhances monoaminergic and cholinergic reinnervation of the spinal cord. Expression levels of GFAP and NG2 around the lesion site were decreased in histone H1-treated mice relative to vehicle-treated mice six weeks after injury. Histone H1 reduced astrocytic migration, changed the shape of GFAP- and NG2-positive glial cells and altered gene expression. Gene ontology enrichment analysis indicated that in particular genes coding for proteins involved in proliferation, differentiation, migration and apoptosis are dysregulated. The up- and down-regulation of distinct genes was confirmed by qPCR and Western blot analysis. Moreover, histone H1 reduced hydrogen peroxide-induced cell death of cultured motoneurons. CONCLUSIONS The combined observations indicate that histone H1 locally applied to the lesion site, improves regeneration after spinal cord injury. Some of these beneficial functions of histone H1 in vivo and in vitro can be attributed to its interaction with PSA-carrying neural cell adhesion molecule.
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Affiliation(s)
- Ralf Kleene
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriele Loers
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Igor Jakovcevski
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Bibhudatta Mishra
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Melitta Schachner
- Department of Cell Biology and Neuroscience, Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, NJ, USA
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong, China
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Madji Hounoum B, Blasco H, Coque E, Vourc'h P, Emond P, Corcia P, Andres CR, Raoul C, Mavel S. The Metabolic Disturbances of Motoneurons Exposed to Glutamate. Mol Neurobiol 2018; 55:7669-7676. [PMID: 29435916 DOI: 10.1007/s12035-018-0945-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/31/2018] [Indexed: 12/13/2022]
Abstract
Glutamate-induced excitotoxicity is considered as one of the major pathophysiological factors of motoneuron death in amyotrophic lateral sclerosis and other motoneuron diseases. In order to expand our knowledge on mechanisms of glutamate-induced excitotoxicity, the present study proposes to determine the metabolic consequences of glutamate and astrocytes in primary enriched motoneuron culture. Using liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS), we showed that the presence of astrocytes and glutamate profoundly modified the metabolic profile of motoneurons. Our study highlights for the first time that crosstalk between astrocytes and enriched motoneuron culture induced alterations in phenylalanine, tryptophan, purine, arginine, proline, aspartate, and glutamate metabolism in motoneurons. We observed that astrocytes modulate the sensitivity of motoneurons to glutamate, since metabolites altered by glutamate in motoneurons cultured alone were different (except 5-hydroxylysine) from those altered in co-cultured motoneurons. Our findings provide new insight into the metabolic alterations associated to astrocytes and glutamate in motoneurons and provide opportunities to identify novel therapeutic targets.
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Affiliation(s)
- Blandine Madji Hounoum
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France
| | - Hélène Blasco
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France.,Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Bretonneau, CHRU de Tours, Tours, France
| | - Emmanuelle Coque
- The Institute for Neurosciences of Montpellier, Inserm UMR1051, Univ Montpellier, Saint Eloi Hospital, Montpellier, France
| | - Patrick Vourc'h
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France.,Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Bretonneau, CHRU de Tours, Tours, France
| | - Patrick Emond
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France
| | - Philippe Corcia
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France.,Centre SLA, Service de Neurologie, CHRU de Tours, Tours, France
| | - Christian R Andres
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France.,Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Bretonneau, CHRU de Tours, Tours, France
| | - Cédric Raoul
- The Institute for Neurosciences of Montpellier, Inserm UMR1051, Univ Montpellier, Saint Eloi Hospital, Montpellier, France
| | - Sylvie Mavel
- INSERM U930 "Imagerie et Cerveau," CHRU de Tours, Université François-Rabelais, Tours, France. .,UFR Pharmacie, INSERM U930, 31 av Monge, 37200, Tours, France.
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