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Ke J, Lu WC, Jing HY, Qian S, Moon SW, Cui GF, Qian WX, Che XJ, Zhang Q, Lai SS, Zhang L, Zhu YJ, Xie JD, Huang TW. Functional dissection of parabrachial substrates in processing nociceptive information. Zool Res 2024; 45:633-647. [PMID: 38766746 PMCID: PMC11188607 DOI: 10.24272/j.issn.2095-8137.2023.412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 05/11/2024] [Indexed: 05/22/2024] Open
Abstract
Painful stimuli elicit first-line reflexive defensive reactions and, in many cases, also evoke second-line recuperative behaviors, the latter of which reflects the sensing of tissue damage and the alleviation of suffering. The lateral parabrachial nucleus (lPBN), composed of external- (elPBN), dorsal- (dlPBN), and central/superior-subnuclei (jointly referred to as slPBN), receives sensory inputs from spinal projection neurons and plays important roles in processing affective information from external threats and body integrity disruption. However, the organizational rules of lPBN neurons that provoke diverse behaviors in response to different painful stimuli from cutaneous and deep tissues remain unclear. In this study, we used region-specific neuronal depletion or silencing approaches combined with a battery of behavioral assays to show that slPBN neurons expressing substance P receptor ( NK1R) (lPBN NK1R) are crucial for driving pain-associated self-care behaviors evoked by sustained noxious thermal and mechanical stimuli applied to skin or bone/muscle, while elPBN neurons are dispensable for driving such reactions. Notably, lPBN NK1R neurons are specifically required for forming sustained somatic pain-induced negative teaching signals and aversive memory but are not necessary for fear-learning or escape behaviors elicited by external threats. Lastly, both lPBN NK1R and elPBN neurons contribute to chemical irritant-induced nocifensive reactions. Our results reveal the functional organization of parabrachial substrates that drive distinct behavioral outcomes in response to sustained pain versus external danger under physiological conditions.
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Affiliation(s)
- Jin Ke
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Cheng Lu
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Hai-Yang Jing
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Shen Qian
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Sun-Wook Moon
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Guang-Fu Cui
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Wei-Xin Qian
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Xiao-Jing Che
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Zhang
- Department of Anesthesiology, Shenzhen University General Hospital and Shenzhen University Academy of Clinical Medical Sciences, Shenzhen University, Shenzhen, Guangdong 518055, China
| | - Shi-Shi Lai
- School of Medicine, Yunnan University, Kunming, Yunnan 650091, China
| | - Ling Zhang
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Ying-Jie Zhu
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China. E-mail:
| | - Jing-Dun Xie
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, China. E-mail:
| | - Tian-Wen Huang
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen-Hong Kong Institute of Brain Science, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China. E-mail:
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2
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Gradwell MA, Ozeri-Engelhard N, Eisdorfer JT, Laflamme OD, Gonzalez M, Upadhyay A, Medlock L, Shrier T, Patel KR, Aoki A, Gandhi M, Abbas-Zadeh G, Oputa O, Thackray JK, Ricci M, George A, Yusuf N, Keating J, Imtiaz Z, Alomary SA, Bohic M, Haas M, Hernandez Y, Prescott SA, Akay T, Abraira VE. Multimodal sensory control of motor performance by glycinergic interneurons of the mouse spinal cord deep dorsal horn. Neuron 2024; 112:1302-1327.e13. [PMID: 38452762 DOI: 10.1016/j.neuron.2024.01.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 10/31/2023] [Accepted: 01/26/2024] [Indexed: 03/09/2024]
Abstract
Sensory feedback is integral for contextually appropriate motor output, yet the neural circuits responsible remain elusive. Here, we pinpoint the medial deep dorsal horn of the mouse spinal cord as a convergence point for proprioceptive and cutaneous input. Within this region, we identify a population of tonically active glycinergic inhibitory neurons expressing parvalbumin. Using anatomy and electrophysiology, we demonstrate that deep dorsal horn parvalbumin-expressing interneuron (dPV) activity is shaped by convergent proprioceptive, cutaneous, and descending input. Selectively targeting spinal dPVs, we reveal their widespread ipsilateral inhibition onto pre-motor and motor networks and demonstrate their role in gating sensory-evoked muscle activity using electromyography (EMG) recordings. dPV ablation altered limb kinematics and step-cycle timing during treadmill locomotion and reduced the transitions between sub-movements during spontaneous behavior. These findings reveal a circuit basis by which sensory convergence onto dorsal horn inhibitory neurons modulates motor output to facilitate smooth movement and context-appropriate transitions.
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Affiliation(s)
- Mark A Gradwell
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Nofar Ozeri-Engelhard
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; Neuroscience PhD program, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Jaclyn T Eisdorfer
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Olivier D Laflamme
- Dalhousie PhD program, Dalhousie University, Halifax, NS, Canada; Department of Medical Neuroscience, Atlantic Mobility Action Project, Brain Repair Center, Dalhousie University, Halifax, NS, Canada
| | - Melissa Gonzalez
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; Department of Biomedical Engineering, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Aman Upadhyay
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; Neuroscience PhD program, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Laura Medlock
- Neurosciences & Mental Health, The Hospital for Sick Children, Toronto, ON, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Tara Shrier
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Komal R Patel
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Adin Aoki
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Melissa Gandhi
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Gloria Abbas-Zadeh
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Olisemaka Oputa
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Joshua K Thackray
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; Human Genetics Institute of New Jersey, Rutgers University, The State University of New Jersey, Piscataway, NJ, USA; Tourette International Collaborative Genetics Study (TIC Genetics)
| | - Matthew Ricci
- School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Arlene George
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Nusrath Yusuf
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; Neuroscience PhD program, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Jessica Keating
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Zarghona Imtiaz
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Simona A Alomary
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Manon Bohic
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Michael Haas
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Yurdiana Hernandez
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA
| | - Steven A Prescott
- Neurosciences & Mental Health, The Hospital for Sick Children, Toronto, ON, Canada; Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Turgay Akay
- Department of Medical Neuroscience, Atlantic Mobility Action Project, Brain Repair Center, Dalhousie University, Halifax, NS, Canada
| | - Victoria E Abraira
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA; W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, NJ, USA.
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3
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Lavaud S, Bichara C, D'Andola M, Yeh SH, Takeoka A. Two inhibitory neuronal classes govern acquisition and recall of spinal sensorimotor adaptation. Science 2024; 384:194-201. [PMID: 38603479 DOI: 10.1126/science.adf6801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 03/06/2024] [Indexed: 04/13/2024]
Abstract
Spinal circuits are central to movement adaptation, yet the mechanisms within the spinal cord responsible for acquiring and retaining behavior upon experience remain unclear. Using a simple conditioning paradigm, we found that dorsal inhibitory neurons are indispensable for adapting protective limb-withdrawal behavior by regulating the transmission of a specific set of somatosensory information to enhance the saliency of conditioning cues associated with limb position. By contrast, maintaining previously acquired motor adaptation required the ventral inhibitory Renshaw cells. Manipulating Renshaw cells does not affect the adaptation itself but flexibly alters the expression of adaptive behavior. These findings identify a circuit basis involving two distinct populations of spinal inhibitory neurons, which enables lasting sensorimotor adaptation independently from the brain.
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Affiliation(s)
- Simon Lavaud
- VIB-Neuroelectronics Research Flanders (NERF), 3001 Leuven, Belgium
- KU Leuven, Department of Neuroscience and Leuven Brain Institute, 3000 Leuven, Belgium
| | - Charlotte Bichara
- VIB-Neuroelectronics Research Flanders (NERF), 3001 Leuven, Belgium
- KU Leuven, Department of Neuroscience and Leuven Brain Institute, 3000 Leuven, Belgium
| | - Mattia D'Andola
- VIB-Neuroelectronics Research Flanders (NERF), 3001 Leuven, Belgium
- KU Leuven, Department of Neuroscience and Leuven Brain Institute, 3000 Leuven, Belgium
| | - Shu-Hao Yeh
- VIB-Neuroelectronics Research Flanders (NERF), 3001 Leuven, Belgium
- KU Leuven, Department of Neuroscience and Leuven Brain Institute, 3000 Leuven, Belgium
| | - Aya Takeoka
- VIB-Neuroelectronics Research Flanders (NERF), 3001 Leuven, Belgium
- KU Leuven, Department of Neuroscience and Leuven Brain Institute, 3000 Leuven, Belgium
- IMEC, 3001 Leuven, Belgium
- RIKEN Center for Brain Science, Laboratory for Motor Circuit Plasticity, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
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4
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Espinosa F, Pop IV, Lai HC. Electrophysiological Properties of Proprioception-Related Neurons in the Intermediate Thoracolumbar Spinal Cord. eNeuro 2024; 11:ENEURO.0331-23.2024. [PMID: 38627062 PMCID: PMC11055654 DOI: 10.1523/eneuro.0331-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Proprioception, the sense of limb and body position, is required to produce accurate and precise movements. Proprioceptive sensory neurons transmit muscle length and tension information to the spinal cord. The function of excitatory neurons in the intermediate spinal cord, which receive this proprioceptive information, remains poorly understood. Using genetic labeling strategies and patch-clamp techniques in acute spinal cord preparations in mice, we set out to uncover how two sets of spinal neurons, Clarke's column (CC) and Atoh1-lineage neurons, respond to electrical activity and how their inputs are organized. Both sets of neurons are located in close proximity in laminae V-VII of the thoracolumbar spinal cord and have been described to receive proprioceptive signals. We find that a majority of CC neurons have a tonic-firing type and express a distinctive hyperpolarization-activated current (Ih). Atoh1-lineage neurons, which cluster into two spatially distinct populations, are mostly a fading-firing type and display similar electrophysiological properties to each other, possibly due to their common developmental lineage. Finally, we find that CC neurons respond to stimulation of lumbar dorsal roots, consistent with prior knowledge that CC neurons receive hindlimb proprioceptive information. In contrast, using a combination of electrical stimulation, optogenetic stimulation, and transsynaptic rabies virus tracing, we find that Atoh1-lineage neurons receive heterogeneous, predominantly local thoracic inputs that include parvalbumin-lineage sensory afferents and local interneuron presynaptic inputs. Altogether, we find that CC and Atoh1-lineage neurons have distinct membrane properties and sensory input organization, representing different subcircuit modes of proprioceptive information processing.
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Affiliation(s)
- Felipe Espinosa
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Iliodora V Pop
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Helen C Lai
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, Texas 75390
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5
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Strain MM, Conley NJ, Kauffman LS, Espinoza L, Fedorchak S, Martinez PC, Crook ME, Jalil M, Hodes GE, Abbott SB, Güler AD, Campbell JN, Boychuk CR. Dorsal motor vagal neurons can elicit bradycardia and reduce anxiety-like behavior. iScience 2024; 27:109137. [PMID: 38420585 PMCID: PMC10901094 DOI: 10.1016/j.isci.2024.109137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/16/2023] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
Cardiovagal neurons (CVNs) innervate cardiac ganglia through the vagus nerve to control cardiac function. Although the cardioinhibitory role of CVNs in nucleus ambiguus (CVNNA) is well established, the nature and functionality of CVNs in dorsal motor nucleus of the vagus (CVNDMV) is less clear. We therefore aimed to characterize CVNDMV anatomically, physiologically, and functionally. Optogenetically activating cholinergic DMV neurons resulted in robust bradycardia through peripheral muscarinic (parasympathetic) and nicotinic (ganglionic) acetylcholine receptors, but not beta-1-adrenergic (sympathetic) receptors. Retrograde tracing from the cardiac fat pad labeled CVNNA and CVNDMV through the vagus nerve. Using whole-cell patch-clamp, CVNDMV demonstrated greater hyperexcitability and spontaneous action potential firing ex vivo despite similar resting membrane potentials, compared to CVNNA. Chemogenetically activating DMV also caused significant bradycardia with a correlated reduction in anxiety-like behavior. Thus, DMV contains uniquely hyperexcitable CVNs and is capable of cardioinhibition and robust anxiolysis.
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Affiliation(s)
- Misty M. Strain
- Department of Cellular and Integrative Physiology, Long School of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | | | - Lily S. Kauffman
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Liliana Espinoza
- Department of Cellular and Integrative Physiology, Long School of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | - Stephanie Fedorchak
- Department of Cellular and Integrative Physiology, Long School of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
| | | | - Maisie E. Crook
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Maira Jalil
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Georgia E. Hodes
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Stephen B.G. Abbott
- Department of Pharmacology, University of Virginia, Charlottesville, VA, USA
| | - Ali D. Güler
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - John N. Campbell
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Carie R. Boychuk
- Department of Cellular and Integrative Physiology, Long School of Medicine, University of Texas Health San Antonio, San Antonio, TX, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
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6
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Schappe MS, Brinn PA, Joshi NR, Greenberg RS, Min S, Alabi AA, Zhang C, Liberles SD. A vagal reflex evoked by airway closure. Nature 2024; 627:830-838. [PMID: 38448588 PMCID: PMC10972749 DOI: 10.1038/s41586-024-07144-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 01/31/2024] [Indexed: 03/08/2024]
Abstract
Airway integrity must be continuously maintained throughout life. Sensory neurons guard against airway obstruction and, on a moment-by-moment basis, enact vital reflexes to maintain respiratory function1,2. Decreased lung capacity is common and life-threatening across many respiratory diseases, and lung collapse can be acutely evoked by chest wall trauma, pneumothorax or airway compression. Here we characterize a neuronal reflex of the vagus nerve evoked by airway closure that leads to gasping. In vivo vagal ganglion imaging revealed dedicated sensory neurons that detect airway compression but not airway stretch. Vagal neurons expressing PVALB mediate airway closure responses and innervate clusters of lung epithelial cells called neuroepithelial bodies (NEBs). Stimulating NEBs or vagal PVALB neurons evoked gasping in the absence of airway threats, whereas ablating NEBs or vagal PVALB neurons eliminated gasping in response to airway closure. Single-cell RNA sequencing revealed that NEBs uniformly express the mechanoreceptor PIEZO2, and targeted knockout of Piezo2 in NEBs eliminated responses to airway closure. NEBs were dispensable for the Hering-Breuer inspiratory reflex, which indicated that discrete terminal structures detect airway closure and inflation. Similar to the involvement of Merkel cells in touch sensation3,4, NEBs are PIEZO2-expressing epithelial cells and, moreover, are crucial for an aspect of lung mechanosensation. These findings expand our understanding of neuronal diversity in the airways and reveal a dedicated vagal pathway that detects airway closure to help preserve respiratory function.
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Affiliation(s)
- Michael S Schappe
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Philip A Brinn
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Narendra R Joshi
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Rachel S Greenberg
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Soohong Min
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - AbdulRasheed A Alabi
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Chuchu Zhang
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Stephen D Liberles
- Department of Cell Biology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA.
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7
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Rankin G, Chirila AM, Emanuel AJ, Zhang Z, Woolf CJ, Drugowitsch J, Ginty DD. Nerve injury disrupts temporal processing in the spinal cord dorsal horn through alterations in PV + interneurons. Cell Rep 2024; 43:113718. [PMID: 38294904 PMCID: PMC11101906 DOI: 10.1016/j.celrep.2024.113718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 11/13/2023] [Accepted: 01/11/2024] [Indexed: 02/02/2024] Open
Abstract
How mechanical allodynia following nerve injury is encoded in patterns of neural activity in the spinal cord dorsal horn (DH) remains incompletely understood. We address this in mice using the spared nerve injury model of neuropathic pain and in vivo electrophysiological recordings. Surprisingly, despite dramatic behavioral over-reactivity to mechanical stimuli following nerve injury, an overall increase in sensitivity or reactivity of DH neurons is not observed. We do, however, observe a marked decrease in correlated neural firing patterns, including the synchrony of mechanical stimulus-evoked firing, across the DH. Alterations in DH temporal firing patterns are recapitulated by silencing DH parvalbumin+ (PV+) interneurons, previously implicated in mechanical allodynia, as are allodynic pain-like behaviors. These findings reveal decorrelated DH network activity, driven by alterations in PV+ interneurons, as a prominent feature of neuropathic pain and suggest restoration of proper temporal activity as a potential therapeutic strategy to treat chronic neuropathic pain.
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Affiliation(s)
- Genelle Rankin
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Anda M Chirila
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Alan J Emanuel
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Zihe Zhang
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA 02115, USA
| | - Clifford J Woolf
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA 02115, USA
| | - Jan Drugowitsch
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - David D Ginty
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.
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8
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Desiderio S, Schwaller F, Tartour K, Padmanabhan K, Lewin GR, Carroll P, Marmigere F. Touch receptor end-organ innervation and function require sensory neuron expression of the transcription factor Meis2. eLife 2024; 12:RP89287. [PMID: 38386003 PMCID: PMC10942617 DOI: 10.7554/elife.89287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024] Open
Abstract
Touch sensation is primarily encoded by mechanoreceptors, called low-threshold mechanoreceptors (LTMRs), with their cell bodies in the dorsal root ganglia. Because of their great diversity in terms of molecular signature, terminal endings morphology, and electrophysiological properties, mirroring the complexity of tactile experience, LTMRs are a model of choice to study the molecular cues differentially controlling neuronal diversification. While the transcriptional codes that define different LTMR subtypes have been extensively studied, the molecular players that participate in their late maturation and in particular in the striking diversity of their end-organ morphological specialization are largely unknown. Here we identified the TALE homeodomain transcription factor Meis2 as a key regulator of LTMRs target-field innervation in mice. Meis2 is specifically expressed in cutaneous LTMRs, and its expression depends on target-derived signals. While LTMRs lacking Meis2 survived and are normally specified, their end-organ innervations, electrophysiological properties, and transcriptome are differentially and markedly affected, resulting in impaired sensory-evoked behavioral responses. These data establish Meis2 as a major transcriptional regulator controlling the orderly formation of sensory neurons innervating peripheral end organs required for light touch.
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Affiliation(s)
- Simon Desiderio
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U 1298MontpellierFrance
| | - Frederick Schwaller
- Department of Neuroscience, Max‐Delbrück Centre for Molecular MedicineBerlin‐BuchGermany
| | | | | | - Gary R Lewin
- Department of Neuroscience, Max‐Delbrück Centre for Molecular MedicineBerlin‐BuchGermany
| | - Patrick Carroll
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U 1298MontpellierFrance
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9
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Wang Y, Liu N, Ma L, Yue L, Cui S, Liu FY, Yi M, Wan Y. Ventral Hippocampal CA1 Pyramidal Neurons Encode Nociceptive Information. Neurosci Bull 2024; 40:201-217. [PMID: 37440103 PMCID: PMC10838882 DOI: 10.1007/s12264-023-01086-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/27/2023] [Indexed: 07/14/2023] Open
Abstract
As a main structure of the limbic system, the hippocampus plays a critical role in pain perception and chronicity. The ventral hippocampal CA1 (vCA1) is closely associated with negative emotions such as anxiety, stress, and fear, yet how vCA1 neurons encode nociceptive information remains unclear. Using in vivo electrophysiological recording, we characterized vCA1 pyramidal neuron subpopulations that exhibited inhibitory or excitatory responses to plantar stimuli and were implicated in encoding stimuli modalities in naïve rats. Functional heterogeneity of the vCA1 pyramidal neurons was further identified in neuropathic pain conditions: the proportion and magnitude of the inhibitory response neurons paralleled mechanical allodynia and contributed to the confounded encoding of innocuous and noxious stimuli, whereas the excitatory response neurons were still instrumental in the discrimination of stimulus properties. Increased theta power and theta-spike coupling in vCA1 correlated with nociceptive behaviors. Optogenetic inhibition of vCA1 pyramidal neurons induced mechanical allodynia in naïve rats, whereas chemogenetic reversal of the overall suppressed vCA1 activity had analgesic effects in rats with neuropathic pain. These results provide direct evidence for the representations of nociceptive information in vCA1.
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Affiliation(s)
- Yue Wang
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Naizheng Liu
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Longyu Ma
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Lupeng Yue
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Shuang Cui
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Feng-Yu Liu
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Ming Yi
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
- Key Laboratory for Neuroscience, Ministry of Education/National Health Commission, Peking University, Beijing, 100083, China
| | - You Wan
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China.
- Key Laboratory for Neuroscience, Ministry of Education/National Health Commission, Peking University, Beijing, 100083, China.
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226019, China.
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10
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Zhang D, Chen Y, Wei Y, Chen H, Wu Y, Wu L, Li J, Ren Q, Miao C, Zhu T, Liu J, Ke B, Zhou C. Spatial transcriptomics and single-nucleus RNA sequencing reveal a transcriptomic atlas of adult human spinal cord. eLife 2024; 12:RP92046. [PMID: 38289829 PMCID: PMC10945563 DOI: 10.7554/elife.92046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024] Open
Abstract
Despite the recognized importance of the spinal cord in sensory processing, motor behaviors, and neural diseases, the underlying organization of neuronal clusters and their spatial location remain elusive. Recently, several studies have attempted to define the neuronal types and functional heterogeneity in the spinal cord using single-cell or single-nucleus RNA sequencing in animal models or developing humans. However, molecular evidence of cellular heterogeneity in the adult human spinal cord is limited. Here, we classified spinal cord neurons into 21 subclusters and determined their distribution from nine human donors using single-nucleus RNA sequencing and spatial transcriptomics. Moreover, we compared the human findings with previously published single-nucleus data of the adult mouse spinal cord, which revealed an overall similarity in the neuronal composition of the spinal cord between the two species while simultaneously highlighting some degree of heterogeneity. Additionally, we examined the sex differences in the spinal neuronal subclusters. Several genes, such as SCN10A and HCN1, showed sex differences in motor neurons. Finally, we classified human dorsal root ganglia (DRG) neurons using spatial transcriptomics and explored the putative interactions between DRG and spinal cord neuronal subclusters. In summary, these results illustrate the complexity and diversity of spinal neurons in humans and provide an important resource for future research to explore the molecular mechanisms underlying spinal cord physiology and diseases.
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Affiliation(s)
- Donghang Zhang
- Department of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Yali Chen
- Department of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Yiyong Wei
- Department of Anesthesiology, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College)ShenhenChina
| | - Hongjun Chen
- Department of Intensive Care Unit, Affiliated Hospital of Zunyi Medical UniversityZunyiChina
| | - Yujie Wu
- Department of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Lin Wu
- Department of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Jin Li
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical UniversityZunyiChina
| | - Qiyang Ren
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical UniversityZunyiChina
| | - Changhong Miao
- Department of Anesthesiology, Zhongshan Hospital, Fudan UniversityShanghaiChina
| | - Tao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Bowen Ke
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
| | - Cheng Zhou
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan UniversityChengduChina
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11
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Soedirdjo SDH, Chung YC, Dhaher YY. Sex hormone mediated change on flexion reflex. Front Neurosci 2023; 17:1263756. [PMID: 38188036 PMCID: PMC10768023 DOI: 10.3389/fnins.2023.1263756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/27/2023] [Indexed: 01/09/2024] Open
Abstract
It has been shown that estrogen and progesterone receptors are expressed in the spinal cord; therefore, fluctuation in their concentrations may affect the spinal network and modulate the control of movement. Herein, we assessed the neuro-modulatory effect of sex hormones on the polysynaptic spinal network by using a flexion reflex network as a model system. Twenty-four healthy eumenorrheic women (age 21-37 years) were tested every other day for one menstrual cycle. Serum estradiol and progesterone were acquired at the time of testing. The flexion reflex of the tibialis anterior was elicited by sending an innocuous electrical stimulus directly to the posterior tibial nerve or plantar cutaneous afferent. Analyses were performed for each menstrual cycle phase: the follicular phase and the luteal phase. Increases in estradiol or progesterone concentrations were not associated with reflex duration or root mean squared (RMS) amplitude in either the follicular or luteal phases. In the luteal phase, an increase in the estradiol concentration was associated with a longer latency of the reflex (b = 0.23, p = 0.038). The estradiol × progesterone interaction was found towards significance (b = -0.017, p = 0.081). These results highlight the potential synergistic effect of estradiol and progesterone and may provide indirect confirmatory evidence of the observed modulatory effect.
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Affiliation(s)
- Subaryani D. H. Soedirdjo
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Yu-Chen Chung
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Yasin Y. Dhaher
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, United States
- Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX, United States
- Peter O’Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, United States
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12
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Bohic M, Upadhyay A, Eisdorfer JT, Keating J, Simon RC, Briones BA, Azadegan C, Nacht HD, Oputa O, Martinez AM, Bethell BN, Gradwell MA, Romanienko P, Ramer MS, Stuber GD, Abraira VE. A new Hoxb8FlpO mouse line for intersectional approaches to dissect developmentally defined adult sensorimotor circuits. Front Mol Neurosci 2023; 16:1176823. [PMID: 37603775 PMCID: PMC10437123 DOI: 10.3389/fnmol.2023.1176823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/04/2023] [Indexed: 08/23/2023] Open
Abstract
Improvements in the speed and cost of expression profiling of neuronal tissues offer an unprecedented opportunity to define ever finer subgroups of neurons for functional studies. In the spinal cord, single cell RNA sequencing studies support decades of work on spinal cord lineage studies, offering a unique opportunity to probe adult function based on developmental lineage. While Cre/Flp recombinase intersectional strategies remain a powerful tool to manipulate spinal neurons, the field lacks genetic tools and strategies to restrict manipulations to the adult mouse spinal cord at the speed at which new tools develop. This study establishes a new workflow for intersectional mouse-viral strategies to dissect adult spinal function based on developmental lineages in a modular fashion. To restrict manipulations to the spinal cord, we generate a brain-sparing Hoxb8FlpO mouse line restricting Flp recombinase expression to caudal tissue. Recapitulating endogenous Hoxb8 gene expression, Flp-dependent reporter expression is present in the caudal embryo starting day 9.5. This expression restricts Flp activity in the adult to the caudal brainstem and below. Hoxb8FlpO heterozygous and homozygous mice do not develop any of the sensory or locomotor phenotypes evident in Hoxb8 heterozygous or mutant animals, suggesting normal developmental function of the Hoxb8 gene and protein in Hoxb8FlpO mice. Compared to the variability of brain recombination in available caudal Cre and Flp lines, Hoxb8FlpO activity is not present in the brain above the caudal brainstem, independent of mouse genetic background. Lastly, we combine the Hoxb8FlpO mouse line with dorsal horn developmental lineage Cre mouse lines to express GFP in developmentally determined dorsal horn populations. Using GFP-dependent Cre recombinase viruses and Cre recombinase-dependent inhibitory chemogenetics, we target developmentally defined lineages in the adult. We show how developmental knock-out versus transient adult silencing of the same ROR𝛃 lineage neurons affects adult sensorimotor behavior. In summary, this new mouse line and viral approach provides a blueprint to dissect adult somatosensory circuit function using Cre/Flp genetic tools to target spinal cord interneurons based on genetic lineage.
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Affiliation(s)
- Manon Bohic
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Aman Upadhyay
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- Neuroscience PhD Program at Rutgers Robert Wood Johnson Medical School, Piscataway, NJ, United States
| | - Jaclyn T. Eisdorfer
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Jessica Keating
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- School of Medicine, Oregon Health and Science University, Portland, OR, United States
- M.D./PhD Program in Neuroscience, School of Medicine, Oregon Health and Science University, Portland, OR, United States
| | - Rhiana C. Simon
- Center for the Neurobiology of Addiction, Pain, and Emotion, Department of Anesthesiology and Pain Medicine, Department of Pharmacology, University of Washington, Seattle, WA, United States
| | - Brandy A. Briones
- Center for the Neurobiology of Addiction, Pain, and Emotion, Department of Anesthesiology and Pain Medicine, Department of Pharmacology, University of Washington, Seattle, WA, United States
| | - Chloe Azadegan
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Hannah D. Nacht
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Olisemeka Oputa
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Alana M. Martinez
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Bridget N. Bethell
- International Collaboration on Repair Discoveries and Department of Zoology, The University of British Columbia, Vancouver, BC, Canada
| | - Mark A. Gradwell
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
| | - Peter Romanienko
- Genome Editing Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, United States
| | - Matt S. Ramer
- International Collaboration on Repair Discoveries and Department of Zoology, The University of British Columbia, Vancouver, BC, Canada
| | - Garret D. Stuber
- Center for the Neurobiology of Addiction, Pain, and Emotion, Department of Anesthesiology and Pain Medicine, Department of Pharmacology, University of Washington, Seattle, WA, United States
| | - Victoria E. Abraira
- Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, Piscataway, NJ, United States
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13
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Boccia M, Raimo S, Di Vita A, Teghil A, Palermo L. Combining the Inner Self with the Map of the Body: Evidence for White Matter Contribution to the Relation Between Interoceptive Sensibility and Nonaction-oriented Body Representation. Neuroscience 2023; 521:157-165. [PMID: 37142183 DOI: 10.1016/j.neuroscience.2023.04.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 04/04/2023] [Accepted: 04/25/2023] [Indexed: 05/06/2023]
Abstract
Very recent studies on healthy individuals suggest that changes in the sensibility toward internal bodily sensations across the lifespan affect the ability to mentally represent one's body, in terms of action-oriented and nonaction-oriented body representation (BR). Little is known about the neural correlates of this relation. Here we fill this gap using the neuropsychological model provided by focal brain damage. Sixty-five patients with unilateral stroke (20 with left and 45 with right brain damage, LBD and RBD, respectively) participated in this study. Both action-oriented BR and nonaction-oriented BR were tested; interoceptive sensibility was assessed as well. First, we tested whether interoceptive sensibility predicted action-oriented BR and nonaction-oriented BR, in RBD and LBD separately. Then, a track-wise hodological lesion-deficit analysis was performed in a subsample of twenty-four patients to test the brain network supporting this relation. We found that interoceptive sensibility predicted the performances in the task tapping nonaction-oriented BR. The higher interoceptive sensibility was, the worse patients performed. This relation was associated with the disconnection probability of the corticospinal tract, the fronto-insular tract, and the pons. We expand over the previous findings on healthy individuals, supporting the idea that high levels of interoceptive sensibility negatively affect BR. Specific frontal projections and frontal u-shaped tracts may play a pivotal role in such an effect, likely affecting the development of a first-order representation of the self within the brainstem autoregulatory centers and posterior insula and of a second-order representation of the self within the anterior insula and higher-order prefrontal areas.
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Affiliation(s)
- Maddalena Boccia
- Department of Psychology, Sapienza University of Rome, Rome, Italy; Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy.
| | - Simona Raimo
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Antonella Di Vita
- Department of Human Neuroscience, Sapienza University of Rome, Rome, Italy
| | - Alice Teghil
- Department of Psychology, Sapienza University of Rome, Rome, Italy; Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Liana Palermo
- Department of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
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14
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Ren X, Liu S, Virlogeux A, Kang SJ, Brusch J, Liu Y, Dymecki SM, Han S, Goulding M, Acton D. Identification of an essential spinoparabrachial pathway for mechanical itch. Neuron 2023; 111:1812-1829.e6. [PMID: 37023756 PMCID: PMC10446756 DOI: 10.1016/j.neuron.2023.03.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 01/31/2023] [Accepted: 03/08/2023] [Indexed: 04/08/2023]
Abstract
The sensation of itch is a protective response that is elicited by either mechanical or chemical stimuli. The neural pathways for itch transmission in the skin and spinal cord have been characterized previously, but the ascending pathways that transmit sensory information to the brain to evoke itch perception have not been identified. Here, we show that spinoparabrachial neurons co-expressing Calcrl and Lbx1 are essential for generating scratching responses to mechanical itch stimuli. Moreover, we find that mechanical and chemical itch are transmitted by separate ascending pathways to the parabrachial nucleus, where they engage separate populations of FoxP2PBN neurons to drive scratching behavior. In addition to revealing the architecture of the itch transmission circuitry required for protective scratching in healthy animals, we identify the cellular mechanisms underlying pathological itch by showing the ascending pathways for mechanical and chemical itch function cooperatively with the FoxP2PBN neurons to drive chronic itch and hyperknesis/alloknesis.
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Affiliation(s)
- Xiangyu Ren
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA; Biology Graduate Program, Division of Biological Sciences, University of California San Diego, 9500 Gilman Dr, San Diego, CA 92093, USA
| | - Shijia Liu
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA; Biology Graduate Program, Division of Biological Sciences, University of California San Diego, 9500 Gilman Dr, San Diego, CA 92093, USA
| | - Amandine Virlogeux
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Sukjae J Kang
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Jeremy Brusch
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Yuanyuan Liu
- NIDCR, National Institute of Health, 35A Convent Drive, Bethesda, MD 20892, USA
| | - Susan M Dymecki
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Sung Han
- Peptide Biology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA.
| | - Martyn Goulding
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA.
| | - David Acton
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA
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15
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Wilson AC, Sweeney LB. Spinal cords: Symphonies of interneurons across species. Front Neural Circuits 2023; 17:1146449. [PMID: 37180760 PMCID: PMC10169611 DOI: 10.3389/fncir.2023.1146449] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/23/2023] [Indexed: 05/16/2023] Open
Abstract
Vertebrate movement is orchestrated by spinal inter- and motor neurons that, together with sensory and cognitive input, produce dynamic motor behaviors. These behaviors vary from the simple undulatory swimming of fish and larval aquatic species to the highly coordinated running, reaching and grasping of mice, humans and other mammals. This variation raises the fundamental question of how spinal circuits have changed in register with motor behavior. In simple, undulatory fish, exemplified by the lamprey, two broad classes of interneurons shape motor neuron output: ipsilateral-projecting excitatory neurons, and commissural-projecting inhibitory neurons. An additional class of ipsilateral inhibitory neurons is required to generate escape swim behavior in larval zebrafish and tadpoles. In limbed vertebrates, a more complex spinal neuron composition is observed. In this review, we provide evidence that movement elaboration correlates with an increase and specialization of these three basic interneuron types into molecularly, anatomically, and functionally distinct subpopulations. We summarize recent work linking neuron types to movement-pattern generation across fish, amphibians, reptiles, birds and mammals.
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Affiliation(s)
| | - Lora B. Sweeney
- Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Lower Austria, Austria
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16
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Frezel N, Ranucci M, Foster E, Wende H, Pelczar P, Mendes R, Ganley RP, Werynska K, d'Aquin S, Beccarini C, Birchmeier C, Zeilhofer HU, Wildner H. c-Maf-positive spinal cord neurons are critical elements of a dorsal horn circuit for mechanical hypersensitivity in neuropathy. Cell Rep 2023; 42:112295. [PMID: 36947543 PMCID: PMC10157139 DOI: 10.1016/j.celrep.2023.112295] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/02/2023] [Accepted: 03/06/2023] [Indexed: 03/23/2023] Open
Abstract
Corticospinal tract (CST) neurons innervate the deep spinal dorsal horn to sustain chronic neuropathic pain. The majority of neurons targeted by the CST are interneurons expressing the transcription factor c-Maf. Here, we used intersectional genetics to decipher the function of these neurons in dorsal horn sensory circuits. We find that excitatory c-Maf (c-MafEX) neurons receive sensory input mainly from myelinated fibers and target deep dorsal horn parabrachial projection neurons and superficial dorsal horn neurons, thereby connecting non-nociceptive input to nociceptive output structures. Silencing c-MafEX neurons has little effect in healthy mice but alleviates mechanical hypersensitivity in neuropathic mice. c-MafEX neurons also receive input from inhibitory c-Maf and parvalbumin neurons, and compromising inhibition by these neurons caused mechanical hypersensitivity and spontaneous aversive behaviors reminiscent of c-MafEX neuron activation. Our study identifies c-MafEX neurons as normally silent second-order nociceptors that become engaged in pathological pain signaling upon loss of inhibitory control.
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Affiliation(s)
- Noémie Frezel
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | - Matteo Ranucci
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | - Edmund Foster
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | | | - Pawel Pelczar
- Center for Transgenic Models (CTM), University of Basel, 4001 Basel, Switzerland
| | - Raquel Mendes
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | - Robert P Ganley
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | - Karolina Werynska
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | - Simon d'Aquin
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | - Camilla Beccarini
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland
| | | | - Hanns Ulrich Zeilhofer
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland; Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, 8092 Zürich, Switzerland.
| | - Hendrik Wildner
- Institute of Pharmacology and Toxicology, University of Zürich, 8057 Zürich, Switzerland.
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17
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Tan S, Faull RLM, Curtis MA. The tracts, cytoarchitecture, and neurochemistry of the spinal cord. Anat Rec (Hoboken) 2023; 306:777-819. [PMID: 36099279 DOI: 10.1002/ar.25079] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/01/2022] [Accepted: 09/11/2022] [Indexed: 11/06/2022]
Abstract
The human spinal cord can be described using a range of nomenclatures with each providing insight into its structure and function. Here we have comprehensively reviewed the key literature detailing the general structure, configuration of tracts, the cytoarchitecture of Rexed's laminae, and the neurochemistry at the spinal segmental level. The purpose of this review is to detail current anatomical understanding of how the spinal cord is structured and to aid researchers in identifying gaps in the literature that need to be studied to improve our knowledge of the spinal cord which in turn will improve the potential of therapeutic intervention for disorders of the spinal cord.
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Affiliation(s)
- Sheryl Tan
- Centre for Brain Research and Department of Anatomy and Medical Imaging, University of Auckland, Auckland, New Zealand
| | - Richard L M Faull
- Centre for Brain Research and Department of Anatomy and Medical Imaging, University of Auckland, Auckland, New Zealand
| | - Maurice A Curtis
- Centre for Brain Research and Department of Anatomy and Medical Imaging, University of Auckland, Auckland, New Zealand
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18
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Schnerwitzki D, Englert C, Schmidt M. Adapting the pantograph limb: Differential robustness of fore- and hindlimb kinematics against genetically induced perturbation in the neural control networks and its evolutionary implications. ZOOLOGY 2023; 157:126076. [PMID: 36842298 DOI: 10.1016/j.zool.2023.126076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 01/28/2023] [Accepted: 02/07/2023] [Indexed: 02/19/2023]
Abstract
The evolutionary transformation of limb morphology to the four-segmented pantograph of therians is among the milestones of mammalian evolution. But, it is still unknown if changes of the mechanical limb function were accompanied by corresponding changes in development and sensorimotor control. The impressive locomotor performance of mammals leaves no doubt about the high integration of pattern formation, neural control and mechanics. But, deviations from normal intra- and interlimb coordination (spatial and temporal) become evident in the presence of perturbations. We induced a perturbation in the development of the neural circuits of the spinal cord of mice (Mus musculus) using a deletion of the Wilms tumor suppressor gene Wt1 in a subpopulation of dI6 interneurons. These interneurons are assumed to participate in the intermuscular coordination within the limb and in left-right-coordination between the limbs. We describe the locomotor kinematics in mice with conditional Wt1 knockout and compare them to mice without Wt1 deletion. Unlike knockout neonates, knockout adult mice do not display severe deviations from normal (=control group) interlimb coordination, but the coordinated protraction and retraction of the limbs is altered. The forelimbs are more affected by deviations from the control than the hindlimbs. This observation appears to reflect a different degree of integration and resistance against the induced perturbation between the limbs. Interestingly, the observed effects are similar to locomotor deficits reported to arise when sensory feedback from proprioceptors or cutaneous receptors is impaired. A putative participation of Wt1 positive dI6 interneurons in sensorimotor integration is therefore considered.
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Affiliation(s)
- Danny Schnerwitzki
- Molecular Genetics Lab, Leibniz Institute on Aging - Fritz Lipmann Institute, Beutenbergstrasse 11, 07745 Jena, Germany.
| | - Christoph Englert
- Molecular Genetics Lab, Leibniz Institute on Aging - Fritz Lipmann Institute, Beutenbergstrasse 11, 07745 Jena, Germany; Institute of Biochemistry and Biophysics, Friedrich-Schiller-University Jena, Jena, Germany.
| | - Manuela Schmidt
- Institute of Zoology and Evolutionary Research with Phyletic Museum, Ernst-Haeckel building and Didactics of Biology, Friedrich Schiller University Jena, Erbertstrasse 1, 07743 Jena, Germany.
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19
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Hayashi M, Gullo M, Senturk G, Di Costanzo S, Nagasaki SC, Kageyama R, Imayoshi I, Goulding M, Pfaff SL, Gatto G. A spinal synergy of excitatory and inhibitory neurons coordinates ipsilateral body movements. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.21.533603. [PMID: 36993220 PMCID: PMC10055247 DOI: 10.1101/2023.03.21.533603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Innate and goal-directed movements require a high-degree of trunk and appendicular muscle coordination to preserve body stability while ensuring the correct execution of the motor action. The spinal neural circuits underlying motor execution and postural stability are finely modulated by propriospinal, sensory and descending feedback, yet how distinct spinal neuron populations cooperate to control body stability and limb coordination remains unclear. Here, we identified a spinal microcircuit composed of V2 lineage-derived excitatory (V2a) and inhibitory (V2b) neurons that together coordinate ipsilateral body movements during locomotion. Inactivation of the entire V2 neuron lineage does not impair intralimb coordination but destabilizes body balance and ipsilateral limb coupling, causing mice to adopt a compensatory festinating gait and be unable to execute skilled locomotor tasks. Taken together our data suggest that during locomotion the excitatory V2a and inhibitory V2b neurons act antagonistically to control intralimb coordination, and synergistically to coordinate forelimb and hindlimb movements. Thus, we suggest a new circuit architecture, by which neurons with distinct neurotransmitter identities employ a dual-mode of operation, exerting either synergistic or opposing functions to control different facets of the same motor behavior.
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Affiliation(s)
- Marito Hayashi
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Howard Hughes Medical Institute, Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Miriam Gullo
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Gokhan Senturk
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Biological Sciences Graduate Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
| | - Stefania Di Costanzo
- Biological Sciences Graduate Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Shinji C. Nagasaki
- Research Center for Dynamic Living Systems, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
- Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Ryoichiro Kageyama
- Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
- RIKEN Center for Brain Science, Wako 351-0198, Japan
| | - Itaru Imayoshi
- Research Center for Dynamic Living Systems, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
- Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Martyn Goulding
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Samuel L. Pfaff
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Graziana Gatto
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Neurology Department, University Hospital of Cologne, Cologne, 50937, Germany
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20
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Qi L, Lin SH, Ma Q. Spinal VGLUT3 lineage neurons drive visceral mechanical allodynia but not sensitized visceromotor reflexes. Neuron 2023; 111:669-681.e5. [PMID: 36584681 DOI: 10.1016/j.neuron.2022.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 09/08/2022] [Accepted: 11/30/2022] [Indexed: 12/30/2022]
Abstract
Visceral pain is among the most prevalent and bothersome forms of chronic pain, but their transmission in the spinal cord is still poorly understood. Here, we conducted focal colorectal distention (fCRD) to drive both visceromotor responses (VMRs) and aversion. We first found that spinal CCK neurons were necessary for noxious fCRD to drive both VMRs and aversion under naive conditions. We next showed that spinal VGLUT3 neurons mediate visceral allodynia, whose ablation caused loss of aversion evoked by low-intensity fCRD in mice with gastrointestinal (GI) inflammation or spinal circuit disinhibition. Importantly, these neurons were dispensable for driving sensitized VMRs under both inflammatory and central disinhibition conditions. Anatomically, a subset of VGLUT3 neurons projected to parabrachial nuclei, whose photoactivation sufficiently generated aversion in mice with GI inflammation, without influencing VMRs. Our studies suggest the presence of different spinal substrates that transmit nociceptive versus affective dimensions of visceral sensory information.
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Affiliation(s)
- Lu Qi
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Shing-Hong Lin
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Qiufu Ma
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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21
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Boccia M, Teghil A, Raimo S, Di Vita A, Grossi D, Guariglia C, Palermo L. Neural substrates of interoceptive sensibility: An integrated study in normal and pathological functioning. Neuropsychologia 2023; 183:108504. [PMID: 36746344 DOI: 10.1016/j.neuropsychologia.2023.108504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 12/14/2022] [Accepted: 02/02/2023] [Indexed: 02/08/2023]
Abstract
In early studies interoception strictly referred to the awareness of visceral sensations, but recent theories have expanded this concept to denote the ongoing status of the body, including somatosensory feelings. Here, we integrated data from normal and pathological functioning to disclose neural underpinnings of interoceptive sensibility, taking into account the crucial distinction between visceral and somatosensory feelings. Twenty-seven healthy young individuals underwent structural MRI (including T1w images and DTI). Voxel-wise analyses of the gyrification index (GI) and fractional anisotropy (FA) data were performed to assess the relation between interoceptive sensibility and surface morphometry and anatomical connectivity. Thirty-three unilateral brain-damaged patients took part in this study for Voxel-Based Lesion-Symptom Mapping (VLSM) and track-wise hodological lesion-deficit analysis (TWH). All participants completed the Self-Awareness Questionnaire (SAQ), a self-report tool assessing interoceptive sensibility of visceral (F1) and somatosensory feelings (F2). Tract-Based Spatial Statistics showed that F2 was positively associated with FA in the bilateral anterior thalamic radiation, corticospinal tract, cingulum, forceps, inferior longitudinal, fronto-occipital, superior longitudinal, and uncinate fasciculi; no significant association was detected for F1. However, F1 was positively associated with GI in the left anterior cingulate cortex. VLSM showed that F1 mainly relies on the right posterior insula, whereas F2 is related mostly to subcortical nuclei and surrounding white matter in the right hemisphere. Accordingly, patients with disconnection of the anterior thalamic projection, corticospinal tract, inferior fronto-occipital, inferior longitudinal, uncinate and superior longitudinal fasciculus III showed lower scores on F2. Overall, results support the dissociation between interoceptive sensibility of visceral and somatosensory feelings.
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Affiliation(s)
- Maddalena Boccia
- Department of Psychology, Sapienza University of Rome, Italy; Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Santa Lucia, Italy.
| | - Alice Teghil
- Department of Psychology, Sapienza University of Rome, Italy; Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Santa Lucia, Italy
| | - Simona Raimo
- Department of Medical and Surgical in Sciences, Magna Graecia University of Catanzaro, Italy
| | - Antonella Di Vita
- Department of Human Neuroscience, Sapienza University of Rome, Italy
| | - Dario Grossi
- Department of Psychology, University of Campania Luigi Vanvitelli, Italy
| | - Cecilia Guariglia
- Department of Psychology, Sapienza University of Rome, Italy; Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Santa Lucia, Italy
| | - Liana Palermo
- Cognitive and Motor Rehabilitation and Neuroimaging Unit, IRCCS Santa Lucia, Italy; Department of Medical and Surgical in Sciences, Magna Graecia University of Catanzaro, Italy
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22
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Yadav A, Matson KJE, Li L, Hua I, Petrescu J, Kang K, Alkaslasi MR, Lee DI, Hasan S, Galuta A, Dedek A, Ameri S, Parnell J, Alshardan MM, Qumqumji FA, Alhamad SM, Wang AP, Poulen G, Lonjon N, Vachiery-Lahaye F, Gaur P, Nalls MA, Qi YA, Maric D, Ward ME, Hildebrand ME, Mery PF, Bourinet E, Bauchet L, Tsai EC, Phatnani H, Le Pichon CE, Menon V, Levine AJ. A cellular taxonomy of the adult human spinal cord. Neuron 2023; 111:328-344.e7. [PMID: 36731429 PMCID: PMC10044516 DOI: 10.1016/j.neuron.2023.01.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/30/2022] [Accepted: 01/11/2023] [Indexed: 02/04/2023]
Abstract
The mammalian spinal cord functions as a community of cell types for sensory processing, autonomic control, and movement. While animal models have advanced our understanding of spinal cellular diversity, characterizing human biology directly is important to uncover specialized features of basic function and human pathology. Here, we present a cellular taxonomy of the adult human spinal cord using single-nucleus RNA sequencing with spatial transcriptomics and antibody validation. We identified 29 glial clusters and 35 neuronal clusters, organized principally by anatomical location. To demonstrate the relevance of this resource to human disease, we analyzed spinal motoneurons, which degenerate in amyotrophic lateral sclerosis (ALS) and other diseases. We found that compared with other spinal neurons, human motoneurons are defined by genes related to cell size, cytoskeletal structure, and ALS, suggesting a specialized molecular repertoire underlying their selective vulnerability. We include a web resource to facilitate further investigations into human spinal cord biology.
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Affiliation(s)
- Archana Yadav
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA
| | - Kaya J E Matson
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA; Johns Hopkins University Department of Biology, Baltimore, MD 21218, USA
| | - Li Li
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Isabelle Hua
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Joana Petrescu
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA; Center for Genomics of Neurodegenerative Disease, New York Genome Center, New York, NY, USA
| | - Kristy Kang
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA; Center for Genomics of Neurodegenerative Disease, New York Genome Center, New York, NY, USA
| | - Mor R Alkaslasi
- Unit on the Development of Neurodegeneration, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA; Department of Neuroscience, Brown University, Providence, RI, USA
| | - Dylan I Lee
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA
| | - Saadia Hasan
- Inherited Neurodegenerative Diseases Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Ahmad Galuta
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Annemarie Dedek
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada; Department of Neuroscience, Carleton University, Ottawa, ON, Canada
| | - Sara Ameri
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Jessica Parnell
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada; Department of Neuroscience, Carleton University, Ottawa, ON, Canada
| | | | | | - Saud M Alhamad
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Alick Pingbei Wang
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Gaetan Poulen
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier, France
| | - Nicolas Lonjon
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier, France
| | - Florence Vachiery-Lahaye
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier, France
| | - Pallavi Gaur
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA
| | - Mike A Nalls
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Center for Alzheimer's and Related Dementias, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International LLC, Glen Echo, MD, USA
| | - Yue A Qi
- Center for Alzheimer's and Related Dementias, National Institutes of Health, Bethesda, MD, USA
| | - Dragan Maric
- Flow and Imaging Cytometry Core Facility, National Institute of Neurological Disorders and Stroke; Bethesda, MD, USA
| | - Michael E Ward
- Inherited Neurodegenerative Diseases Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Michael E Hildebrand
- Inherited Neurodegenerative Diseases Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA; Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Pierre-Francois Mery
- Institute of Functional Genomics, Montpellier University, CNRS, INSERM, Montpellier, France
| | - Emmanuel Bourinet
- Institute of Functional Genomics, Montpellier University, CNRS, INSERM, Montpellier, France
| | - Luc Bauchet
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier, France; Institute of Functional Genomics, Montpellier University, CNRS, INSERM, Montpellier, France
| | - Eve C Tsai
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Hemali Phatnani
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA; Center for Genomics of Neurodegenerative Disease, New York Genome Center, New York, NY, USA
| | - Claire E Le Pichon
- Unit on the Development of Neurodegeneration, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Vilas Menon
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA.
| | - Ariel J Levine
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA.
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23
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Bataille-Savattier A, Le Gall-Ianotto C, Lebonvallet N, Misery L, Talagas M. Do Merkel complexes initiate mechanical itch? Exp Dermatol 2023; 32:226-234. [PMID: 36208286 DOI: 10.1111/exd.14685] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/12/2022] [Accepted: 10/05/2022] [Indexed: 11/30/2022]
Abstract
Itch is a common sensation which is amenable to disabling patients' life under pathological and chronic conditions. Shared assertion easily limits itch to chemical itch, without considering mechanical itch and alloknesis, its pathological counterpart. However, in recent years, our understanding of the mechanical itch pathway, particularly in the central nervous system, has been enhanced. In addition, Merkel complexes, conventionally considered as tactile end organs only responsible for light touch perception due to Piezo2 expressed by both Merkel cells and SA1 Aβ-fibres - low threshold mechanical receptors (LTMRs) -, have recently been identified as modulators of mechanical itch. However, the tactile end organs responsible for initiating mechanical itch remain unexplored. The consensus is that some LTMRs, either SA1 Aβ- or A∂- and C-, are cutaneous initiators of mechanical itch, even though they are not self-sufficient to finely detect and encode light mechanical stimuli into sensory perceptions, which depend on the entire hosting tactile end organ. Consequently, to enlighten our understanding of mechanical itch initiation, this article discusses the opportunity to consider Merkel complexes as potential tactile end organs responsible for initiating mechanical itch, under both healthy and pathological conditions. Their unsuspected modulatory abilities indeed show that they are tuned to detect and encode light mechanical stimuli leading to mechanical itch, especially as they host not only SA1 Aβ-LTMRs but also A∂- and C-fibres.
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Affiliation(s)
| | | | | | - Laurent Misery
- University of Brest, LIEN, Brest, France.,CHU Brest, Department of Dermatology, Brest, France
| | - Matthieu Talagas
- University of Brest, LIEN, Brest, France.,CHU Brest, Department of Dermatology, Brest, France
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24
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Huang Z, Sun L, Zheng X, Zhang Y, Zhu Y, Chen T, Chen Z, Ja L, OuYang L, Zhu Y, Chen S, Lei W. A neural tract tracing study on synaptic connections for cortical glutamatergic terminals and cervical spinal calretinin neurons in rats. Front Neural Circuits 2023; 17:1086873. [PMID: 37187913 PMCID: PMC10175624 DOI: 10.3389/fncir.2023.1086873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/06/2023] [Indexed: 05/17/2023] Open
Abstract
The cerebral cortex innervates motor neurons in the anterior horn of the spinal cord by regulating of interneurons. At present, nerve tracing, immunohistochemistry, and immunoelectron microscopy are used to explore and confirm the characteristics of synaptic connections between the corticospinal tract (CST) and cervical spinal calretinin (Cr) interneurons. Our morphological results revealed that (1) biotinylated dextran amine labeled (BDA+) fibers from the cerebral cortex primarily presented a contralateral spinal distribution, with a denser distribution in the ventral horn (VH) than in the dorsal horn (DH). An electron microscope (EM) showed that BDA+ terminals formed asymmetric synapses with spinal neurons, and their mean labeling rate was not different between the DH and VH. (2) Cr-immunoreactive (Cr+) neurons were unevenly distributed throughout the spinal gray matter, and were denser and larger in the VH than in the DH. At the single labeling electron microscope (EM) level, the labeling rate of Cr+ dendrites was higher in the VH than in the DH, in which Cr+ dendrites mainly received asymmetric synaptic inputs, and between the VH and DH. (3) Immunofluorescence triple labeling showed obvious apposition points among BDA+ terminals, synaptophysin and Cr+ dendrites, with a higher density in the VH than in the DH. (4) Double labeling in EM, BDA+ terminals and Cr+ dendrites presented the same pattern, BDA+ terminals formed asymmetric synapses either with Cr+ dendrites or Cr negative (Cr-) dendrites, and Cr+ dendrites received either BDA+ terminals or BDA- synaptic inputs. The average percentage of BDA+ terminals targeting Cr+ dendrites was higher in the VH than in the DH, but the percentage of BDA+ terminals targeting Cr- dendrites was prominently higher than that targeting Cr+ dendrites. There was no difference in BDA+ terminal size. The percentage rate for Cr+ dendrites receiving BDA+ terminal inputs was lower than that receiving BDA- terminal inputs, and the BDA+ terminal size was larger than the BDA- terminal size received by Cr+ dendrites. The present morphological results suggested that spinal Cr+ interneurons are involved in the regulatory process of the cortico-spinal pathway.
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Affiliation(s)
- Ziyun Huang
- Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Liping Sun
- Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xuefeng Zheng
- Neuroscience Laboratory for Cognitive and Developmental Disorders, Department of Anatomy, Medical College of Jinan University, Guangzhou, China
| | - Ye Zhang
- Neuroscience Laboratory for Cognitive and Developmental Disorders, Department of Anatomy, Medical College of Jinan University, Guangzhou, China
| | - Yaxi Zhu
- Department of Pathology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tao Chen
- Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Zhi Chen
- Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Linju Ja
- Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Lisi OuYang
- Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yaofeng Zhu
- College of Medicine, Institute of Medical Sciences, Jishou University, Jishou, China
- Yaofeng Zhu, ,
| | - Si Chen
- Department of Human Anatomy, Histology and Embryology, Zunyi Medical University, Zhuhai, China
- Si Chen, ,
| | - Wanlong Lei
- Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Wanlong Lei, ,
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25
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Khan MN, Cherukuri P, Negro F, Rajput A, Fabrowski P, Bansal V, Lancelin C, Lee TI, Bian Y, Mayer WP, Akay T, Müller D, Bonn S, Farina D, Marquardt T. ERR2 and ERR3 promote the development of gamma motor neuron functional properties required for proprioceptive movement control. PLoS Biol 2022; 20:e3001923. [PMID: 36542664 PMCID: PMC9815657 DOI: 10.1371/journal.pbio.3001923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 01/05/2023] [Accepted: 11/16/2022] [Indexed: 12/24/2022] Open
Abstract
The ability of terrestrial vertebrates to effectively move on land is integrally linked to the diversification of motor neurons into types that generate muscle force (alpha motor neurons) and types that modulate muscle proprioception, a task that in mammals is chiefly mediated by gamma motor neurons. The diversification of motor neurons into alpha and gamma types and their respective contributions to movement control have been firmly established in the past 7 decades, while recent studies identified gene expression signatures linked to both motor neuron types. However, the mechanisms that promote the specification of gamma motor neurons and/or their unique properties remained unaddressed. Here, we found that upon selective loss of the orphan nuclear receptors ERR2 and ERR3 (also known as ERRβ, ERRγ or NR3B2, NR3B3, respectively) in motor neurons in mice, morphologically distinguishable gamma motor neurons are generated but do not acquire characteristic functional properties necessary for regulating muscle proprioception, thus disrupting gait and precision movements. Complementary gain-of-function experiments in chick suggest that ERR2 and ERR3 could operate via transcriptional activation of neural activity modulators to promote a gamma motor neuron biophysical signature of low firing thresholds and high firing rates. Our work identifies a mechanism specifying gamma motor neuron functional properties essential for the regulation of proprioceptive movement control.
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Affiliation(s)
- Mudassar N. Khan
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
- * E-mail: (MNK); (TM)
| | - Pitchaiah Cherukuri
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
- SRM University Andhra Pradesh, Mangalagiri-Mandal, Neeru Konda, Amaravati, Andhra Pradesh, India
| | - Francesco Negro
- Department of Clinical and Experimental Sciences, Università degli Studi di Brescia, Brescia, Italy
| | - Ashish Rajput
- University Medical Center Hamburg Eppendorf, Center for Molecular Neurobiology Hamburg (ZMNH), Institute of Medical Systems Biology, Hamburg, Germany
- Maximon AG, Zug, Switzerland
| | - Piotr Fabrowski
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Vikas Bansal
- University Medical Center Hamburg Eppendorf, Center for Molecular Neurobiology Hamburg (ZMNH), Institute of Medical Systems Biology, Hamburg, Germany
- Biomedical Data Science and Machine Learning Group, German Center for Neurodegenerative Diseases, Tübingen, Germany
| | - Camille Lancelin
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Tsung-I Lee
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Yehan Bian
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - William P. Mayer
- Atlantic Mobility Action Project, Brain Repair Centre, Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Turgay Akay
- Atlantic Mobility Action Project, Brain Repair Centre, Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Daniel Müller
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Stefan Bonn
- University Medical Center Hamburg Eppendorf, Center for Molecular Neurobiology Hamburg (ZMNH), Institute of Medical Systems Biology, Hamburg, Germany
| | - Dario Farina
- Department of Bioengineering, Imperial College London, Royal School of Mines, London, United Kingdom
| | - Till Marquardt
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
- * E-mail: (MNK); (TM)
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26
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Chirila AM, Rankin G, Tseng SY, Emanuel AJ, Chavez-Martinez CL, Zhang D, Harvey CD, Ginty DD. Mechanoreceptor signal convergence and transformation in the dorsal horn flexibly shape a diversity of outputs to the brain. Cell 2022; 185:4541-4559.e23. [PMID: 36334588 PMCID: PMC9691598 DOI: 10.1016/j.cell.2022.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 08/22/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
The encoding of touch in the spinal cord dorsal horn (DH) and its influence on tactile representations in the brain are poorly understood. Using a range of mechanical stimuli applied to the skin, large-scale in vivo electrophysiological recordings, and genetic manipulations, here we show that neurons in the mouse spinal cord DH receive convergent inputs from both low- and high-threshold mechanoreceptor subtypes and exhibit one of six functionally distinct mechanical response profiles. Genetic disruption of DH feedforward or feedback inhibitory motifs, comprised of interneurons with distinct mechanical response profiles, revealed an extensively interconnected DH network that enables dynamic, flexible tuning of postsynaptic dorsal column (PSDC) output neurons and dictates how neurons in the primary somatosensory cortex respond to touch. Thus, mechanoreceptor subtype convergence and non-linear transformations at the earliest stage of the somatosensory hierarchy shape how touch of the skin is represented in the brain.
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Affiliation(s)
- Anda M Chirila
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Genelle Rankin
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Shih-Yi Tseng
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Alan J Emanuel
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Carmine L Chavez-Martinez
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Dawei Zhang
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Christopher D Harvey
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - David D Ginty
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA.
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27
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Abdus-Saboor I, Luo W. Measuring Mouse Somatosensory Reflexive Behaviors with High-speed Videography, Statistical Modeling, and Machine Learning. NEUROMETHODS 2022; 178:441-456. [PMID: 35783537 PMCID: PMC9249079 DOI: 10.1007/978-1-0716-2039-7_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Objectively measuring and interpreting an animal's sensory experience remains a challenging task. This is particularly true when using preclinical rodent models to study pain mechanisms and screen for potential new pain treatment reagents. How to determine their pain states in a precise and unbiased manner is a hurdle that the field will need to overcome. Here, we describe our efforts to measure mouse somatosensory reflexive behaviors with greatly improved precision by high-speed video imaging. We describe how coupling sub-second ethograms of reflexive behaviors with a statistical reduction method and supervised machine learning can be used to create a more objective quantitative mouse "pain scale." Our goal is to provide the readers with a protocol of how to integrate some of the new tools described here with currently used mechanical somatosensory assays, while discussing the advantages and limitations of this new approach.
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Affiliation(s)
- Ishmail Abdus-Saboor
- Department of Biology, University of Pennsylvania, 3740 Hamilton Walk, Philadelphia, PA, 19104, USA
| | - Wenqin Luo
- Department of Neuroscience, University of Pennsylvania, 3610 Hamilton Walk, Philadelphia, PA, 19104, USA
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28
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Toussaint AB, Foster W, Jones JM, Kaufmann S, Wachira M, Hughes R, Bongiovanni AR, Famularo ST, Dunham BP, Schwark R, Karbalaei R, Dressler C, Bavley CC, Fried NT, Wimmer ME, Abdus-Saboor I. Chronic paternal morphine exposure increases sensitivity to morphine-derived pain relief in male progeny. SCIENCE ADVANCES 2022; 8:eabk2425. [PMID: 35171664 PMCID: PMC8849295 DOI: 10.1126/sciadv.abk2425] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Parental history of opioid exposure is seldom considered when prescribing opioids for pain relief. To explore whether parental opioid exposure may affect sensitivity to morphine in offspring, we developed a "rat pain scale" with high-speed imaging, machine learning, and mathematical modeling in a multigenerational model of paternal morphine self-administration. We find that the most commonly used tool to measure mechanical sensitivity in rodents, the von Frey hair, is not painful in rats during baseline conditions. We also find that male progeny of morphine-treated sires had no baseline changes in mechanical pain sensitivity but were more sensitive to the pain-relieving effects of morphine. Using RNA sequencing across pain-relevant brain regions, we identify gene expression changes within the regulator of G protein signaling family of proteins that may underlie this multigenerational phenotype. Together, this rat pain scale revealed that paternal opioid exposure increases sensitivity to morphine's pain-relieving effects in male offspring.
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Affiliation(s)
- Andre B. Toussaint
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - William Foster
- Zuckerman Mind Brain Behavior Institute and Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Jessica M. Jones
- Zuckerman Mind Brain Behavior Institute and Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Samuel Kaufmann
- Zuckerman Mind Brain Behavior Institute and Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Meghan Wachira
- Department of Biology, Rutgers Camden University, Camden, NJ, USA
| | - Robert Hughes
- Department of Biology, Rutgers Camden University, Camden, NJ, USA
| | - Angela R. Bongiovanni
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Sydney T. Famularo
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Benjamin P. Dunham
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Ryan Schwark
- Zuckerman Mind Brain Behavior Institute and Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Reza Karbalaei
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Carmen Dressler
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Charlotte C. Bavley
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Nathan T. Fried
- Department of Biology, Rutgers Camden University, Camden, NJ, USA
| | - Mathieu E. Wimmer
- Department of Psychology, Program in Neuroscience Temple University, Philadelphia, PA, USA
| | - Ishmail Abdus-Saboor
- Zuckerman Mind Brain Behavior Institute and Department of Biological Sciences, Columbia University, New York, NY, USA
- Corresponding author.
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29
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Abstract
When animals walk overground, mechanical stimuli activate various receptors located in muscles, joints, and skin. Afferents from these mechanoreceptors project to neuronal networks controlling locomotion in the spinal cord and brain. The dynamic interactions between the control systems at different levels of the neuraxis ensure that locomotion adjusts to its environment and meets task demands. In this article, we describe and discuss the essential contribution of somatosensory feedback to locomotion. We start with a discussion of how biomechanical properties of the body affect somatosensory feedback. We follow with the different types of mechanoreceptors and somatosensory afferents and their activity during locomotion. We then describe central projections to locomotor networks and the modulation of somatosensory feedback during locomotion and its mechanisms. We then discuss experimental approaches and animal models used to investigate the control of locomotion by somatosensory feedback before providing an overview of the different functional roles of somatosensory feedback for locomotion. Lastly, we briefly describe the role of somatosensory feedback in the recovery of locomotion after neurological injury. We highlight the fact that somatosensory feedback is an essential component of a highly integrated system for locomotor control. © 2021 American Physiological Society. Compr Physiol 11:1-71, 2021.
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Affiliation(s)
- Alain Frigon
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Quebec, Canada
| | - Turgay Akay
- Department of Medical Neuroscience, Atlantic Mobility Action Project, Brain Repair Center, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Boris I Prilutsky
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
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30
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TAFA4 relieves injury-induced mechanical hypersensitivity through LDL receptors and modulation of spinal A-type K + current. Cell Rep 2021; 37:109884. [PMID: 34706225 DOI: 10.1016/j.celrep.2021.109884] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/30/2021] [Accepted: 10/05/2021] [Indexed: 12/30/2022] Open
Abstract
Pain, whether acute or persistent, is a serious medical problem worldwide. However, its management remains unsatisfactory, and new analgesic molecules are required. We show here that TAFA4 reverses inflammatory, postoperative, and spared nerve injury (SNI)-induced mechanical hypersensitivity in male and female mice. TAFA4 requires functional low-density lipoprotein receptor-related proteins (LRPs) because their inhibition by RAP (receptor-associated protein) dose-dependently abolishes its antihypersensitive actions. SNI selectively decreases A-type K+ current (IA) in spinal lamina II outer excitatory interneurons (L-IIo ExINs) and induces a concomitant increase in IA and decrease in hyperpolarization-activated current (Ih) in lamina II inner inhibitory interneurons (L-IIi InhINs). Remarkably, SNI-induced ion current alterations in both IN subtypes were rescued by TAFA4 in an LRP-dependent manner. We provide insights into the mechanism by which TAFA4 reverses injury-induced mechanical hypersensitivity by restoring normal spinal neuron activity and highlight the considerable potential of TAFA4 as a treatment for injury-induced mechanical pain.
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31
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Nicola FDC, Hua I, Levine AJ. Intersectional genetic tools to study skilled reaching in mice. Exp Neurol 2021; 347:113879. [PMID: 34597682 DOI: 10.1016/j.expneurol.2021.113879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/10/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
Reaching to grasp is an evolutionarily conserved behavior and a crucial part of the motor repertoire in mammals. As it is studied in the laboratory, reaching has become the prototypical example of dexterous forelimb movements, illuminating key principles of motor control throughout the spinal cord, brain, and peripheral nervous system. Here, we (1) review the motor elements or phases that comprise the reach, grasp, and retract movements of reaching behavior, (2) highlight the role of intersectional genetic tools in linking these movements to their neuronal substrates, (3) describe spinal cord cell types and their roles in skilled reaching, and (4) how descending pathways from the brain and the sensory systems contribute to skilled reaching. We emphasize that genetic perturbation experiments can pin-point the neuronal substrates of specific phases of reaching behavior.
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Affiliation(s)
- Fabricio do Couto Nicola
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America
| | - Isabelle Hua
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America
| | - Ariel J Levine
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America.
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32
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Liu S, Wang Z, Su Y, Qi L, Yang W, Fu M, Jing X, Wang Y, Ma Q. A neuroanatomical basis for electroacupuncture to drive the vagal-adrenal axis. Nature 2021; 598:641-645. [PMID: 34646018 PMCID: PMC9178665 DOI: 10.1038/s41586-021-04001-4] [Citation(s) in RCA: 251] [Impact Index Per Article: 83.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 09/07/2021] [Indexed: 11/09/2022]
Abstract
Somatosensory autonomic reflexes allow electroacupuncture stimulation (ES) to modulate body physiology at distant sites1-6 (for example, suppressing severe systemic inflammation6-9). Since the 1970s, an emerging organizational rule about these reflexes has been the presence of body-region specificity1-6. For example, ES at the hindlimb ST36 acupoint but not the abdominal ST25 acupoint can drive the vagal-adrenal anti-inflammatory axis in mice10,11. The neuroanatomical basis of this somatotopic organization is, however, unknown. Here we show that PROKR2Cre-marked sensory neurons, which innervate the deep hindlimb fascia (for example, the periosteum) but not abdominal fascia (for example, the peritoneum), are crucial for driving the vagal-adrenal axis. Low-intensity ES at the ST36 site in mice with ablated PROKR2Cre-marked sensory neurons failed to activate hindbrain vagal efferent neurons or to drive catecholamine release from adrenal glands. As a result, ES no longer suppressed systemic inflammation induced by bacterial endotoxins. By contrast, spinal sympathetic reflexes evoked by high-intensity ES at both ST25 and ST36 sites were unaffected. We also show that optogenetic stimulation of PROKR2Cre-marked nerve terminals through the ST36 site is sufficient to drive the vagal-adrenal axis but not sympathetic reflexes. Furthermore, the distribution patterns of PROKR2Cre nerve fibres can retrospectively predict body regions at which low-intensity ES will or will not effectively produce anti-inflammatory effects. Our studies provide a neuroanatomical basis for the selectivity and specificity of acupoints in driving specific autonomic pathways.
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Affiliation(s)
- Shenbin Liu
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA.,Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China.,Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Fudan University, Shanghai, China.,State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Zhifu Wang
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Yangshuai Su
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA.,Meridians Research Center, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lu Qi
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Wei Yang
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Mingzhou Fu
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Xianghong Jing
- Meridians Research Center, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanqing Wang
- Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China.,Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Fudan University, Shanghai, China.,State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Qiufu Ma
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA, USA.
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33
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Raoof R, Martin Gil C, Lafeber FPJG, de Visser H, Prado J, Versteeg S, Pascha MN, Heinemans ALP, Adolfs Y, Pasterkamp J, Wood JN, Mastbergen SC, Eijkelkamp N. Dorsal Root Ganglia Macrophages Maintain Osteoarthritis Pain. J Neurosci 2021; 41:8249-8261. [PMID: 34400519 PMCID: PMC8482866 DOI: 10.1523/jneurosci.1787-20.2021] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 12/11/2022] Open
Abstract
Pain is the major debilitating symptom of osteoarthritis (OA), which is difficult to treat. In OA patients joint tissue damage only poorly associates with pain, indicating other mechanisms contribute to OA pain. Immune cells regulate the sensory system, but little is known about the involvement of immune cells in OA pain. Here, we report that macrophages accumulate in the dorsal root ganglia (DRG) distant from the site of injury in two rodent models of OA. DRG macrophages acquired an M1-like phenotype, and depletion of DRG macrophages resolved OA pain in male and female mice. Sensory neurons innervating the damaged knee joint shape DRG macrophages into an M1-like phenotype. Persisting OA pain, accumulation of DRG macrophages, and programming of DRG macrophages into an M1-like phenotype were independent of Nav1.8 nociceptors. Inhibition of M1-like macrophages in the DRG by intrathecal injection of an IL4-IL10 fusion protein or M2-like macrophages resolved persistent OA pain. In conclusion, these findings reveal a crucial role for macrophages in maintaining OA pain independent of the joint damage and suggest a new direction to treat OA pain.SIGNIFICANCE STATEMENT In OA patients pain poorly correlates with joint tissue changes indicating mechanisms other than only tissue damage that cause pain in OA. We identified that DRG containing the somata of sensory neurons innervating the damaged knee are infiltrated with macrophages that are shaped into an M1-like phenotype by sensory neurons. We show that these DRG macrophages actively maintain OA pain remotely and independent of joint damage. The phenotype of these macrophages is crucial for a pain-promoting role. Targeting the phenotype of DRG macrophages with either M2-like macrophages or a cytokine fusion protein that skews macrophages into an M2-like phenotype resolves OA pain. Our work reveals a mechanism that contributes to the maintenance of OA pain distant from the affected knee joint and suggests that dorsal root ganglia macrophages are a target to treat osteoarthritis chronic pain.
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Affiliation(s)
- Ramin Raoof
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Christian Martin Gil
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Floris P J G Lafeber
- Department of Rheumatology and Clinical Immunology, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Huub de Visser
- Department of Rheumatology and Clinical Immunology, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Judith Prado
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Sabine Versteeg
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Mirte N Pascha
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Anne L P Heinemans
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Youri Adolfs
- Department of Translational Neuroscience, Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Jeroen Pasterkamp
- Department of Translational Neuroscience, Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - John N Wood
- Molecular Nociception Group, Department of Biology, University College London, London WC1E 6BT, England
| | - Simon C Mastbergen
- Department of Rheumatology and Clinical Immunology, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Niels Eijkelkamp
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
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34
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Russ DE, Cross RBP, Li L, Koch SC, Matson KJE, Yadav A, Alkaslasi MR, Lee DI, Le Pichon CE, Menon V, Levine AJ. A harmonized atlas of mouse spinal cord cell types and their spatial organization. Nat Commun 2021; 12:5722. [PMID: 34588430 PMCID: PMC8481483 DOI: 10.1038/s41467-021-25125-1] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 07/21/2021] [Indexed: 12/12/2022] Open
Abstract
Single-cell RNA sequencing data can unveil the molecular diversity of cell types. Cell type atlases of the mouse spinal cord have been published in recent years but have not been integrated together. Here, we generate an atlas of spinal cell types based on single-cell transcriptomic data, unifying the available datasets into a common reference framework. We report a hierarchical structure of postnatal cell type relationships, with location providing the highest level of organization, then neurotransmitter status, family, and finally, dozens of refined populations. We validate a combinatorial marker code for each neuronal cell type and map their spatial distributions in the adult spinal cord. We also show complex lineage relationships among postnatal cell types. Additionally, we develop an open-source cell type classifier, SeqSeek, to facilitate the standardization of cell type identification. This work provides an integrated view of spinal cell types, their gene expression signatures, and their molecular organization.
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Affiliation(s)
- Daniel E Russ
- Division of Cancer Epidemiology and Genetics, Data Science Research Group, National Cancer Institute, NIH, Rockville, MD, USA
| | - Ryan B Patterson Cross
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD, USA
| | - Li Li
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD, USA
| | - Stephanie C Koch
- Department of Neuroscience, Physiology and Pharmacology, Division of Biosciences, University College London, London, UK
| | - Kaya J E Matson
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD, USA
| | - Archana Yadav
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA
| | - Mor R Alkaslasi
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA.,Department of Neuroscience, Brown University, Providence, RI, USA
| | - Dylan I Lee
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA
| | - Claire E Le Pichon
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD, USA
| | - Vilas Menon
- Department of Neurology, Center for Translational and Computational Neuroimmunology, Columbia University, New York, NY, USA
| | - Ariel J Levine
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD, USA.
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35
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Chaterji S, Barik A, Sathyamurthy A. Intraspinal injection of adeno-associated viruses into the adult mouse spinal cord. STAR Protoc 2021; 2:100786. [PMID: 34505088 PMCID: PMC8414904 DOI: 10.1016/j.xpro.2021.100786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Genetic dissection of neural circuits has been accelerated by recent advances in viral-based vectors. This protocol describes an effective approach to performing intraspinal injections of adeno-associated viruses, which can be used to label, manipulate, and monitor spinal and supraspinal neurons. By avoiding invasive laminectomies and restrictive spinal-clamping and by adopting injectable anaesthetics and tough quartz glass micropipettes, our protocol presents a time-saving and efficient approach for genetic manipulation of neural circuits nucleated in the spinal cord. For complete details on the use and execution of this protocol, please refer to Sathyamurthy et al. (2020).
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Affiliation(s)
- Shrivas Chaterji
- Centre for Neuroscience, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Arnab Barik
- Centre for Neuroscience, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Anupama Sathyamurthy
- Centre for Neuroscience, Indian Institute of Science, Bangalore, Karnataka 560012, India
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36
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Moreno-Lopez Y, Bichara C, Delbecq G, Isope P, Cordero-Erausquin M. The corticospinal tract primarily modulates sensory inputs in the mouse lumbar cord. eLife 2021; 10:65304. [PMID: 34497004 PMCID: PMC8439650 DOI: 10.7554/elife.65304] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 07/27/2021] [Indexed: 01/01/2023] Open
Abstract
It is generally assumed that the main function of the corticospinal tract (CST) is to convey motor commands to bulbar or spinal motoneurons. Yet the CST has also been shown to modulate sensory signals at their entry point in the spinal cord through primary afferent depolarization (PAD). By sequentially investigating different routes of corticofugal pathways through electrophysiological recordings and an intersectional viral strategy, we here demonstrate that motor and sensory modulation commands in mice belong to segregated paths within the CST. Sensory modulation is executed exclusively by the CST via a population of lumbar interneurons located in the deep dorsal horn. In contrast, the cortex conveys the motor command via a relay in the upper spinal cord or supraspinal motor centers. At lumbar level, the main role of the CST is thus the modulation of sensory inputs, which is an essential component of the selective tuning of sensory feedback used to ensure well-coordinated and skilled movement.
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Affiliation(s)
- Yunuen Moreno-Lopez
- Institut des Neurosciences Cellulaires et Intégrées, CNRS - Université de Strasbourg, Strasbourg, France
| | - Charlotte Bichara
- Institut des Neurosciences Cellulaires et Intégrées, CNRS - Université de Strasbourg, Strasbourg, France
| | - Gilles Delbecq
- Institut des Neurosciences Cellulaires et Intégrées, CNRS - Université de Strasbourg, Strasbourg, France
| | - Philippe Isope
- Institut des Neurosciences Cellulaires et Intégrées, CNRS - Université de Strasbourg, Strasbourg, France
| | - Matilde Cordero-Erausquin
- Institut des Neurosciences Cellulaires et Intégrées, CNRS - Université de Strasbourg, Strasbourg, France
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Ma JJ, Zhang TY, Diao XT, Yao L, Li YX, Suo ZW, Yang X, Hu XD, Liu YN. BDNF modulated KCC2 ubiquitylation in spinal cord dorsal horn of mice. Eur J Pharmacol 2021; 906:174205. [PMID: 34048740 DOI: 10.1016/j.ejphar.2021.174205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 10/21/2022]
Abstract
The K+-Cl- co-transporter 2 (KCC2) is a neuron-specific Cl- extruder in the dorsal horn of spinal cord. The low intracellular Cl- concentration established by KCC2 is critical for GABAergic and glycinergic systems to generate synaptic inhibition. Peripheral nerve lesions have been shown to cause KCC2 dysfunction in adult spinal cord through brain-derived neurotrophic factor (BDNF) signaling, which switches the hyperpolarizing inhibitory transmission to be depolarizing and excitatory. However, the mechanisms by which BDNF impairs KCC2 function remain to be elucidated. Here we found that BDNF treatment enhanced KCC2 ubiquitination in the dorsal horn of adult mice, a post-translational modification that leads to KCC2 degradation. Our data showed that spinal BDNF application promoted KCC2 interaction with Casitas B-lineage lymphoma b (Cbl-b), one of the E3 ubiquitin ligases that are involved in the spinal processing of nociceptive information. Knockdown of Cbl-b expression decreased KCC2 ubiquitination level and attenuated the pain hypersensitivity induced by BDNF. Spared nerve injury significantly increased KCC2 ubiquitination, which could be reversed by inhibition of TrkB receptor. Our data implicated that KCC2 was one of the important pain-related substrates of Cbl-b and that ubiquitin modification contributed to BDNF-induced KCC2 hypofunction in the spinal cord.
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Affiliation(s)
- Juan-Juan Ma
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Tian-Yu Zhang
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Xin-Tong Diao
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Lin Yao
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Yin-Xia Li
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Zhan-Wei Suo
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Xian Yang
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China
| | - Xiao-Dong Hu
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China.
| | - Yan-Ni Liu
- Department of Molecular Pharmacology, School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China.
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38
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Chaix A, Deota S, Bhardwaj R, Lin T, Panda S. Sex- and age-dependent outcomes of 9-hour time-restricted feeding of a Western high-fat high-sucrose diet in C57BL/6J mice. Cell Rep 2021; 36:109543. [PMID: 34407415 PMCID: PMC8500107 DOI: 10.1016/j.celrep.2021.109543] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 04/23/2021] [Accepted: 07/26/2021] [Indexed: 11/29/2022] Open
Abstract
Time-restricted feeding (TRF) is a nutritional intervention wherein food intake is limited to a consistent 8- to 10-h daily window without changes in nutritional quality or quantity. TRF can prevent and treat diet-induced obesity (DIO) and associated metabolic disease in young male mice fed an obesogenic diet, the gold standard preclinical model for metabolic disease research. Because age and sex are key biological variables affecting metabolic disease pathophysiology and response to therapies, we assessed their impact on TRF benefits by subjecting young 3-month-old or middle-aged 12-month-old male and female mice to ad libitum or TRF of a Western diet. We show that most of the benefits of TRF are age-independent but are sex-dependent. TRF protects both sexes against fatty liver and glucose intolerance while body weight benefits are observed only in males. We also find that TRF imparts performance benefits and increases survival to sepsis in both sexes.
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Affiliation(s)
- Amandine Chaix
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
| | - Shaunak Deota
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Raghav Bhardwaj
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Terry Lin
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA
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39
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Löken LS, Braz JM, Etlin A, Sadeghi M, Bernstein M, Jewell M, Steyert M, Kuhn J, Hamel K, Llewellyn-Smith IJ, Basbaum A. Contribution of dorsal horn CGRP-expressing interneurons to mechanical sensitivity. eLife 2021; 10:e59751. [PMID: 34061020 PMCID: PMC8245130 DOI: 10.7554/elife.59751] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 05/29/2021] [Indexed: 11/13/2022] Open
Abstract
Primary sensory neurons are generally considered the only source of dorsal horn calcitonin gene-related peptide (CGRP), a neuropeptide critical to the transmission of pain messages. Using a tamoxifen-inducible CalcaCreER transgenic mouse, here we identified a distinct population of CGRP-expressing excitatory interneurons in lamina III of the spinal cord dorsal horn and trigeminal nucleus caudalis. These interneurons have spine-laden, dorsally directed, dendrites, and ventrally directed axons. As under resting conditions, CGRP interneurons are under tonic inhibitory control, neither innocuous nor noxious stimulation provoked significant Fos expression in these neurons. However, synchronous, electrical non-nociceptive Aβ primary afferent stimulation of dorsal roots depolarized the CGRP interneurons, consistent with their receipt of a VGLUT1 innervation. On the other hand, chemogenetic activation of the neurons produced a mechanical hypersensitivity in response to von Frey stimulation, whereas their caspase-mediated ablation led to mechanical hyposensitivity. Finally, after partial peripheral nerve injury, innocuous stimulation (brush) induced significant Fos expression in the CGRP interneurons. These findings suggest that CGRP interneurons become hyperexcitable and contribute either to ascending circuits originating in deep dorsal horn or to the reflex circuits in baseline conditions, but not in the setting of nerve injury.
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Affiliation(s)
- Line S Löken
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Joao M Braz
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Alexander Etlin
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Mahsa Sadeghi
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Mollie Bernstein
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Madison Jewell
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Marilyn Steyert
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Julia Kuhn
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Katherine Hamel
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
| | - Ida J Llewellyn-Smith
- Discipline of Physiology, Adelaide Medical School, University of AdelaideAdelaideAustralia
- Department of Cardiology, Flinders Medical CentreBedford ParkAustralia
| | - Allan Basbaum
- Department of Anatomy, University California, San FranciscoSan FranciscoUnited States
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40
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A subset of spinal dorsal horn interneurons crucial for gating touch-evoked pain-like behavior. Proc Natl Acad Sci U S A 2021; 118:2021220118. [PMID: 33431693 DOI: 10.1073/pnas.2021220118] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A cardinal, intractable symptom of neuropathic pain is mechanical allodynia, pain caused by innocuous stimuli via low-threshold mechanoreceptors such as Aβ fibers. However, the mechanism by which Aβ fiber-derived signals are converted to pain remains incompletely understood. Here we identify a subset of inhibitory interneurons in the spinal dorsal horn (SDH) operated by adeno-associated viral vectors incorporating a neuropeptide Y promoter (AAV-NpyP+) and show that specific ablation or silencing of AAV-NpyP+ SDH interneurons converted touch-sensing Aβ fiber-derived signals to morphine-resistant pain-like behavioral responses. AAV-NpyP+ neurons received excitatory inputs from Aβ fibers and transmitted inhibitory GABA signals to lamina I neurons projecting to the brain. In a model of neuropathic pain developed by peripheral nerve injury, AAV-NpyP+ neurons exhibited deeper resting membrane potentials, and their excitation by Aβ fibers was impaired. Conversely, chemogenetic activation of AAV-NpyP+ neurons in nerve-injured rats reversed Aβ fiber-derived neuropathic pain-like behavior that was shown to be morphine-resistant and reduced pathological neuronal activation of superficial SDH including lamina I. These findings suggest that identified inhibitory SDH interneurons that act as a critical brake on conversion of touch-sensing Aβ fiber signals into pain-like behavioral responses. Thus, enhancing activity of these neurons may offer a novel strategy for treating neuropathic allodynia.
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41
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Carneiro M, Vieillard J, Andrade P, Boucher S, Afonso S, Blanco-Aguiar JA, Santos N, Branco J, Esteves PJ, Ferrand N, Kullander K, Andersson L. A loss-of-function mutation in RORB disrupts saltatorial locomotion in rabbits. PLoS Genet 2021; 17:e1009429. [PMID: 33764968 PMCID: PMC7993613 DOI: 10.1371/journal.pgen.1009429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 02/17/2021] [Indexed: 11/18/2022] Open
Abstract
Saltatorial locomotion is a type of hopping gait that in mammals can be found in rabbits, hares, kangaroos, and some species of rodents. The molecular mechanisms that control and fine-tune the formation of this type of gait are unknown. Here, we take advantage of one strain of domesticated rabbits, the sauteur d'Alfort, that exhibits an abnormal locomotion behavior defined by the loss of the typical jumping that characterizes wild-type rabbits. Strikingly, individuals from this strain frequently adopt a bipedal gait using their front legs. Using a combination of experimental crosses and whole genome sequencing, we show that a single locus containing the RAR related orphan receptor B gene (RORB) explains the atypical gait of these rabbits. We found that a splice-site mutation in an evolutionary conserved site of RORB results in several aberrant transcript isoforms incorporating intronic sequence. This mutation leads to a drastic reduction of RORB-positive neurons in the spinal cord, as well as defects in differentiation of populations of spinal cord interneurons. Our results show that RORB function is required for the performance of saltatorial locomotion in rabbits.
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Affiliation(s)
- Miguel Carneiro
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- * E-mail: (MC); (LA)
| | | | - Pedro Andrade
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
| | - Samuel Boucher
- Labovet Conseil (Réseau Cristal), Les Herbiers Cedex, France
| | - Sandra Afonso
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
| | - José A. Blanco-Aguiar
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
| | - Nuno Santos
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
| | - João Branco
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Pedro J. Esteves
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Nuno Ferrand
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- Department of Zoology, Faculty of Sciences, University of Johannesburg, Auckland, South Africa
| | - Klas Kullander
- Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Leif Andersson
- Science for Life Laboratory Uppsala, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, United States of America
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
- * E-mail: (MC); (LA)
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Spinal Inhibitory Interneurons: Gatekeepers of Sensorimotor Pathways. Int J Mol Sci 2021; 22:ijms22052667. [PMID: 33800863 PMCID: PMC7961554 DOI: 10.3390/ijms22052667] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/26/2021] [Accepted: 03/04/2021] [Indexed: 12/20/2022] Open
Abstract
The ability to sense and move within an environment are complex functions necessary for the survival of nearly all species. The spinal cord is both the initial entry site for peripheral information and the final output site for motor response, placing spinal circuits as paramount in mediating sensory responses and coordinating movement. This is partly accomplished through the activation of complex spinal microcircuits that gate afferent signals to filter extraneous stimuli from various sensory modalities and determine which signals are transmitted to higher order structures in the CNS and to spinal motor pathways. A mechanistic understanding of how inhibitory interneurons are organized and employed within the spinal cord will provide potential access points for therapeutics targeting inhibitory deficits underlying various pathologies including sensory and movement disorders. Recent studies using transgenic manipulations, neurochemical profiling, and single-cell transcriptomics have identified distinct populations of inhibitory interneurons which express an array of genetic and/or neurochemical markers that constitute functional microcircuits. In this review, we provide an overview of identified neural components that make up inhibitory microcircuits within the dorsal and ventral spinal cord and highlight the importance of inhibitory control of sensorimotor pathways at the spinal level.
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43
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Zholudeva LV, Abraira VE, Satkunendrarajah K, McDevitt TC, Goulding MD, Magnuson DSK, Lane MA. Spinal Interneurons as Gatekeepers to Neuroplasticity after Injury or Disease. J Neurosci 2021; 41:845-854. [PMID: 33472820 PMCID: PMC7880285 DOI: 10.1523/jneurosci.1654-20.2020] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 12/15/2020] [Accepted: 12/17/2020] [Indexed: 12/15/2022] Open
Abstract
Spinal interneurons are important facilitators and modulators of motor, sensory, and autonomic functions in the intact CNS. This heterogeneous population of neurons is now widely appreciated to be a key component of plasticity and recovery. This review highlights our current understanding of spinal interneuron heterogeneity, their contribution to control and modulation of motor and sensory functions, and how this role might change after traumatic spinal cord injury. We also offer a perspective for how treatments can optimize the contribution of interneurons to functional improvement.
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Affiliation(s)
| | - Victoria E Abraira
- Department of Cell Biology & Neuroscience, Rutgers University, The State University of New Jersey, New Jersey, 08854
| | - Kajana Satkunendrarajah
- Departments of Neurosurgery and Physiology, Medical College of Wisconsin, Wisconsin, 53226
- Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin, 53295
| | - Todd C McDevitt
- Gladstone Institutes, San Francisco, California, 94158
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California, 94143
| | | | - David S K Magnuson
- University of Louisville, Kentucky Spinal Cord Injury Research Center, Louisville, Kentucky, 40208
| | - Michael A Lane
- Department of Neurobiology and Anatomy, and the Marion Murray Spinal Cord Research Center, Drexel University, Philadelphia, Pennsylvania, 19129
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44
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Sensational developments in somatosensory development? Curr Opin Neurobiol 2021; 66:212-223. [PMID: 33454646 DOI: 10.1016/j.conb.2020.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/10/2020] [Accepted: 12/12/2020] [Indexed: 12/25/2022]
Abstract
This is an overview of the most recent advances pertaining to the development of the cardinal components of the somatosensory system: the peripheral sensory neurons that perceive somatosensory stimuli, the first line central nervous system circuits that modulate them, and the higher structures such as the somatosensory cortex that eventually compute a motor response to them. Here, I also review the most recent findings concerning the role of neuronal activity in somatosensory development, formation of somatotopic maps, insights into human somatosensory development and the link between aberrant somatosensation and neurodevelopmental disorders.
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45
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Gatto G, Bourane S, Ren X, Di Costanzo S, Fenton PK, Halder P, Seal RP, Goulding MD. A Functional Topographic Map for Spinal Sensorimotor Reflexes. Neuron 2021; 109:91-104.e5. [PMID: 33181065 PMCID: PMC7790959 DOI: 10.1016/j.neuron.2020.10.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/17/2020] [Accepted: 09/30/2020] [Indexed: 01/02/2023]
Abstract
Cutaneous somatosensory modalities play pivotal roles in generating a wide range of sensorimotor behaviors, including protective and corrective reflexes that dynamically adapt ongoing movement and posture. How interneurons (INs) in the dorsal horn encode these modalities and transform them into stimulus-appropriate motor behaviors is not known. Here, we use an intersectional genetic approach to functionally assess the contribution that eight classes of dorsal excitatory INs make to sensorimotor reflex responses. We demonstrate that the dorsal horn is organized into spatially restricted excitatory modules composed of molecularly heterogeneous cell types. Laminae I/II INs drive chemical itch-induced scratching, laminae II/III INs generate paw withdrawal movements, and laminae III/IV INs modulate dynamic corrective reflexes. These data reveal a key principle in spinal somatosensory processing, namely, sensorimotor reflexes are driven by the differential spatial recruitment of excitatory neurons.
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Affiliation(s)
- Graziana Gatto
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Steeve Bourane
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Université de la Réunion, DéTROI, UMR 1188 INSERM, Sainte Clotilde, La Réunion 97490, France
| | - Xiangyu Ren
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Biology Graduate Program, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Stefania Di Costanzo
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Biology Graduate Program, Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Peter K Fenton
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Priyabrata Halder
- Departments of Neurobiology and Otolaryngology, Center for Neural Basis of Cognition, and Pittsburgh Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA
| | - Rebecca P Seal
- Departments of Neurobiology and Otolaryngology, Center for Neural Basis of Cognition, and Pittsburgh Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA
| | - Martyn D Goulding
- Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
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46
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Schwaller F, Bégay V, García-García G, Taberner FJ, Moshourab R, McDonald B, Docter T, Kühnemund J, Ojeda-Alonso J, Paricio-Montesinos R, Lechner SG, Poulet JFA, Millan JM, Lewin GR. USH2A is a Meissner's corpuscle protein necessary for normal vibration sensing in mice and humans. Nat Neurosci 2021. [PMID: 33288907 DOI: 10.1101/2020.07.01.180919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Fingertip mechanoreceptors comprise sensory neuron endings together with specialized skin cells that form the end-organ. Exquisitely sensitive, vibration-sensing neurons are associated with Meissner's corpuscles in the skin. In the present study, we found that USH2A, a transmembrane protein with a very large extracellular domain, was found in terminal Schwann cells within Meissner's corpuscles. Pathogenic USH2A mutations cause Usher's syndrome, associated with hearing loss and visual impairment. We show that patients with biallelic pathogenic USH2A mutations also have clear and specific impairments in vibrotactile touch perception, as do mutant mice lacking USH2A. Forepaw rapidly adapting mechanoreceptors innervating Meissner's corpuscles, recorded from Ush2a-/- mice, showed large reductions in vibration sensitivity. However, the USH2A protein was not found in sensory neurons. Thus, loss of USH2A in corpuscular end-organs reduced mechanoreceptor sensitivity as well as vibration perception. Thus, a tether-like protein is required to facilitate detection of small-amplitude vibrations essential for the perception of fine-grained tactile surfaces.
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Affiliation(s)
- Fred Schwaller
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Valérie Bégay
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Gema García-García
- Research Group on Molecular, Cellular and Genomic Biomedicine Health Research, Institute La Fe and Joint Unit for Rare Diseases CIPF-IIS La Fe, Valencia, Spain
- Center for Biomedical Network Research on Rare Diseases, Institute of Health Carlos III, Madrid, Spain
| | - Francisco J Taberner
- Institute of Pharmacology, University of Heidelberg, Heidelberg, Germany
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-CSIC, Alicante, Spain
| | - Rabih Moshourab
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Department of Anesthesiology and Operative Intensive Care Medicine, Campus Virchow Klinikum and Campus Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Department of Anesthesiology, Helios Klinikum Erfurt, Erfurt, Germany
| | - Brennan McDonald
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Trevor Docter
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Department of Molecular and Cellular Biology at Life Sciences Addition, University of California at Berkeley, Berkeley, CA, USA
| | - Johannes Kühnemund
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Julia Ojeda-Alonso
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Ricardo Paricio-Montesinos
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Neuroscience Research Center, Charité-Universitätsmedizin, Berlin, Germany
| | - Stefan G Lechner
- Institute of Pharmacology, University of Heidelberg, Heidelberg, Germany
| | - James F A Poulet
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Neuroscience Research Center, Charité-Universitätsmedizin, Berlin, Germany
| | - Jose M Millan
- Research Group on Molecular, Cellular and Genomic Biomedicine Health Research, Institute La Fe and Joint Unit for Rare Diseases CIPF-IIS La Fe, Valencia, Spain
- Center for Biomedical Network Research on Rare Diseases, Institute of Health Carlos III, Madrid, Spain
| | - Gary R Lewin
- Department of Neuroscience, Max Delbrück Center for Molecular Medicine, Berlin, Germany.
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Abstract
In this tribute to Reggie Edgerton, I briefly review the spinal mechanisms that coordinate locomotion and the interaction between the different sensory mechanisms that help coordinate the locomotor movements and the central locomotor network. The step cycle has four distinct parts, the support phase, the lift off, the flexion phase, and, the most complex, the touch down, when the limb makes a smooth contact with ground again. Each of these phases is affected by different sensory mechanisms, which interact with the central network [central pattern generator (CPG)] generating the basic movements with its four components. Conversely, the CPG also gates the sensory reflex pathways, so that they are active only in a given phase of the step cycle, or even produces opposite effects in different parts of the step cycle. These different examples from mammals are most likely important also to consider for human locomotion and, in particular, in patients with spinal cord injury, partial or complete.
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Affiliation(s)
- Sten Grillner
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
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48
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Liu S, Wang ZF, Su YS, Ray RS, Jing XH, Wang YQ, Ma Q. Somatotopic Organization and Intensity Dependence in Driving Distinct NPY-Expressing Sympathetic Pathways by Electroacupuncture. Neuron 2020; 108:436-450.e7. [PMID: 32791039 PMCID: PMC7666081 DOI: 10.1016/j.neuron.2020.07.015] [Citation(s) in RCA: 159] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/22/2020] [Accepted: 07/13/2020] [Indexed: 12/19/2022]
Abstract
The neuroanatomical basis behind acupuncture practice is still poorly understood. Here, we used intersectional genetic strategy to ablate NPY+ noradrenergic neurons and/or adrenal chromaffin cells. Using endotoxin-induced systemic inflammation as a model, we found that electroacupuncture stimulation (ES) drives sympathetic pathways in somatotopy- and intensity-dependent manners. Low-intensity ES at hindlimb regions drives the vagal-adrenal axis, producing anti-inflammatory effects that depend on NPY+ adrenal chromaffin cells. High-intensity ES at the abdomen activates NPY+ splenic noradrenergic neurons via the spinal-sympathetic axis; these neurons engage incoherent feedforward regulatory loops via activation of distinct adrenergic receptors (ARs), and their ES-evoked activation produces either anti- or pro-inflammatory effects due to disease-state-dependent changes in AR profiles. The revelation of somatotopic organization and intensity dependency in driving distinct autonomic pathways could form a road map for optimizing stimulation parameters to improve both efficacy and safety in using acupuncture as a therapeutic modality.
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Affiliation(s)
- Shenbin Liu
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai 200032, China; Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Zhi-Fu Wang
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Yang-Shuai Su
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Research Center of Meridians, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Russell S Ray
- Memory Brain Research Center and Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA; McNair Medical Institute, Houston, TX, USA
| | - Xiang-Hong Jing
- Research Center of Meridians, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yan-Qing Wang
- Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai 200032, China; Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Qiufu Ma
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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Spinal Inhibitory Ptf1a-Derived Neurons Prevent Self-Generated Itch. Cell Rep 2020; 33:108422. [PMID: 33238109 DOI: 10.1016/j.celrep.2020.108422] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/27/2020] [Accepted: 11/02/2020] [Indexed: 01/13/2023] Open
Abstract
Chronic itch represents an incapacitating burden on patients suffering from a spectrum of diseases. Despite recent advances in our understanding of the cells and circuits implicated in the processing of itch information, chronic itch often presents itself without an apparent cause. Here, we identify a spinal subpopulation of inhibitory neurons defined by the expression of Ptf1a, involved in gating mechanosensory information self-generated during movement. These neurons receive tactile and motor input and establish presynaptic inhibitory contacts on mechanosensory afferents. Loss of Ptf1a neurons leads to increased hairy skin sensitivity and chronic itch, partially mediated by the classic itch pathway involving gastrin-releasing peptide receptor (GRPR) spinal neurons. Conversely, chemogenetic activation of GRPR neurons elicits itch, which is suppressed by concomitant activation of Ptf1a neurons. These findings shed light on the circuit mechanisms implicated in chronic itch and open novel targets for therapy developments.
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Freeman R, Gewandter JS, Faber CG, Gibbons C, Haroutounian S, Lauria G, Levine T, Malik RA, Singleton JR, Smith AG, Bell J, Dworkin RH, Feldman E, Herrmann DN, Hoke A, Kolb N, Mansikka H, Oaklander AL, Peltier A, Polydefkis M, Ritt E, Russell JW, Sainati S, Steiner D, Treister R, Üçeyler N. Idiopathic distal sensory polyneuropathy: ACTTION diagnostic criteria. Neurology 2020; 95:1005-1014. [PMID: 33055271 DOI: 10.1212/wnl.0000000000010988] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/21/2020] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE To present standardized diagnostic criteria for idiopathic distal sensory polyneuropathy (iDSP) and its subtypes: idiopathic mixed fiber sensory neuropathy (iMFN), idiopathic small fiber sensory neuropathy (iSFN), and idiopathic large fiber sensory neuropathy (iLFN) for use in research. METHODS The Analgesic, Anesthetic, and Addiction Clinical Trial Translations, Innovations, Opportunities and Networks (ACTTION) public-private partnership with the Food and Drug Administration convened a meeting to develop consensus diagnostic criteria for iMFN, iSFN, and iLFN. After background presentations, a collaborative, iterative approach was used to develop expert consensus for new criteria. RESULTS An iDSP diagnosis requires at least 1 small fiber (SF) or large fiber (LF) symptom, at least 1 SF or LF sign, abnormalities in sensory nerve conduction studies (NCS) or distal intraepidermal nerve fiber density (IENFD), and exclusion of known etiologies. An iMFN diagnosis requires that at least 1 of the above clinical features is SF and 1 clinical feature is LF with abnormalities in sensory NCS or IENFD. Diagnostic criteria for iSFN require at least 1 SF symptom and at least 1 SF sign with abnormal IENFD, normal sensory NCS, and the absence of LF symptoms and signs. Diagnostic criteria for iLFN require at least 1 LF symptom and at least 1 LF sign with normal IENFD, abnormal sensory NCS, and absence of SF symptoms and signs. CONCLUSION Adoption of these standardized diagnostic criteria will advance research and clinical trials and spur development of novel therapies for iDSPs.
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Affiliation(s)
- Roy Freeman
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
| | - Jennifer S Gewandter
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Catharina G Faber
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Christopher Gibbons
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Simon Haroutounian
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Giuseppe Lauria
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Todd Levine
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Rayaz A Malik
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - J Robinson Singleton
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - A Gordon Smith
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Josh Bell
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Robert H Dworkin
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Eva Feldman
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - David N Herrmann
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Ahmet Hoke
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Noah Kolb
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Heikki Mansikka
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Anne Louise Oaklander
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Amanda Peltier
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Michael Polydefkis
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Elissa Ritt
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - James W Russell
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Stephen Sainati
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Deborah Steiner
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Roi Treister
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
| | - Nurcan Üçeyler
- From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy; Department of Biomedical and Clinical Sciences "Luigi Sacco" (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany
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