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Rodocker HI, Tedeschi A. Overcoming axon regeneration failure and psychopathology: how may gabapentinoids help boost CNS repair? Neural Regen Res 2023; 18:1703-1704. [PMID: 36751783 PMCID: PMC10154496 DOI: 10.4103/1673-5374.361668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/08/2022] [Accepted: 11/18/2022] [Indexed: 12/02/2022] Open
Affiliation(s)
- Haven I. Rodocker
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Andrea Tedeschi
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
- Chronic Brain Injury Program, The Ohio State University, Columbus, OH, USA
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Tedeschi A, Larson MJE, Zouridakis A, Mo L, Bordbar A, Myers JM, Qin HY, Rodocker HI, Fan F, Lannutti JJ, McElroy CA, Nimjee SM, Peng J, Arnold WD, Moon LDF, Sun W. Harnessing cortical plasticity via gabapentinoid administration promotes recovery after stroke. Brain 2022; 145:2378-2393. [PMID: 35905466 PMCID: PMC9890504 DOI: 10.1093/brain/awac103] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 02/18/2022] [Accepted: 02/26/2022] [Indexed: 02/04/2023] Open
Abstract
Stroke causes devastating sensory-motor deficits and long-term disability due to disruption of descending motor pathways. Restoration of these functions enables independent living and therefore represents a high priority for those afflicted by stroke. Here, we report that daily administration of gabapentin, a clinically approved drug already used to treat various neurological disorders, promotes structural and functional plasticity of the corticospinal pathway after photothrombotic cortical stroke in adult mice. We found that gabapentin administration had no effects on vascular occlusion, haemodynamic changes nor survival of corticospinal neurons within the ipsilateral sensory-motor cortex in the acute stages of stroke. Instead, using a combination of tract tracing, electrical stimulation and functional connectivity mapping, we demonstrated that corticospinal axons originating from the contralateral side of the brain in mice administered gabapentin extend numerous collaterals, form new synaptic contacts and better integrate within spinal circuits that control forelimb muscles. Not only does gabapentin daily administration promote neuroplasticity, but it also dampens maladaptive plasticity by reducing the excitability of spinal motor circuitry. In turn, mice administered gabapentin starting 1 h or 1 day after stroke recovered skilled upper extremity function. Functional recovery persists even after stopping the treatment at 6 weeks following a stroke. Finally, chemogenetic silencing of cortical projections originating from the contralateral side of the brain transiently abrogated recovery in mice administered gabapentin, further supporting the conclusion that gabapentin-dependent reorganization of spared cortical pathways drives functional recovery after stroke. These observations highlight the strong potential for repurposing gabapentinoids as a promising treatment strategy for stroke repair.
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Affiliation(s)
- Andrea Tedeschi
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
- Discovery Theme on Chronic Brain Injury, The Ohio State University, Columbus, OH 43210, USA
| | - Molly J E Larson
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Antonia Zouridakis
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Lujia Mo
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Arman Bordbar
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Julia M Myers
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Hannah Y Qin
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Haven I Rodocker
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Fan Fan
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - John J Lannutti
- Discovery Theme on Chronic Brain Injury, The Ohio State University, Columbus, OH 43210, USA
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Craig A McElroy
- Division of Medicinal Chemistry and Pharmacognosy, The Ohio State University, Columbus, OH 43210, USA
| | - Shahid M Nimjee
- Discovery Theme on Chronic Brain Injury, The Ohio State University, Columbus, OH 43210, USA
- Department of Neurosurgery, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Juan Peng
- Center for Biostatistics and Bioinformatics, The Ohio State University, Columbus, OH 43210, USA
| | - W David Arnold
- Division of Neuromuscular Diseases, Department of Neurology, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Lawrence D F Moon
- Neurorestoration Group, Wolfson Centre for Age-Related Diseases, King's College London, London, UK
| | - Wenjing Sun
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
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Rodocker HI, Bordbar A, Larson MJE, Biltz RG, Wangler L, Fadda P, Godbout JP, Tedeschi A. Breaking Mental Barriers Promotes Recovery After Spinal Cord Injury. Front Mol Neurosci 2022; 15:868563. [PMID: 35875670 PMCID: PMC9301320 DOI: 10.3389/fnmol.2022.868563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/14/2022] [Indexed: 11/23/2022] Open
Abstract
Functional recovery after spinal cord injury (SCI) often proves difficult as physical and mental barriers bar survivors from enacting their designated rehabilitation programs. We recently demonstrated that adult mice administered gabapentinoids, clinically approved drugs prescribed to mitigate chronic neuropathic pain, recovered upper extremity function following cervical SCI. Given that rehabilitative training enhances neuronal plasticity and promotes motor recovery, we hypothesized that the combination of an aerobic-based rehabilitation regimen like treadmill training with gabapentin (GBP) administration will maximize recovery in SCI mice by strengthening synaptic connections along the sensorimotor axis. Whereas mice administered GBP recovered forelimb functions over the course of weeks and months following SCI, no additive forelimb recovery as the result of voluntary treadmill training was noted in these mice. To our surprise, we also failed to find an additive effect in mice administered vehicle. As motivation is crucial in rehabilitation interventions, we scored active engagement toward the rehabilitation protocol and found that mice administered GBP were consistently participating in the rehabilitation program. In contrast, mice administered vehicle exhibited a steep decline in participation, especially at chronic time points. Whereas neuroinflammatory gene expression profiles were comparable between experimental conditions, we discovered that mice administered GBP had increased hippocampal neurogenesis and exhibited less anxiety-like behavior after SCI. We also found that an external, social motivator effectively rescues participation in mice administered vehicle and promotes forelimb recovery after chronic SCI. Thus, not only does a clinically relevant treatment strategy preclude the deterioration of mental health after chronic SCI, but group intervention strategies may prove to be physically and emotionally beneficial for SCI individuals.
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Affiliation(s)
- Haven I. Rodocker
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
| | - Arman Bordbar
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
| | - Molly J. E. Larson
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
| | - Rebecca G. Biltz
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States
| | - Lynde Wangler
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States
| | - Paolo Fadda
- Department of Cancer Biology, The Ohio State University, Columbus, OH, United States
| | - Jonathan P. Godbout
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States
- Chronic Brain Injury Program, The Ohio State University, Columbus, OH, United States
| | - Andrea Tedeschi
- Department of Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, United States
- Chronic Brain Injury Program, The Ohio State University, Columbus, OH, United States
- *Correspondence: Andrea Tedeschi
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