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Martins Pereira RC, Medeiros P, Coimbra NC, Machado HR, de Freitas RL. Cortical Neurostimulation and N-Methyl-D-Aspartate Glutamatergic Receptor Activation in the Dysgranular Layer of the Posterior Insular Cortex Modulate Chronic Neuropathic Pain. Neuromodulation 2023; 26:1622-1636. [PMID: 36057495 DOI: 10.1016/j.neurom.2022.05.009] [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: 03/17/2022] [Revised: 05/16/2022] [Accepted: 05/30/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND AND AIMS The dysgranula parts of the posterior insular cortex (PIC) stimulation (PICS) has been investigated as a new putative cortical target for nonpharmacologic therapies in patients with chronic and neuropathic pain (NP). This work investigates the neural bases of insula neurostimulation-induced antinociception and glutamatergic neurochemical mechanisms recruited by the PICS in animals with neuropathy. MATERIALS AND METHODS Male Wistar rats were submitted to the von Frey and acetone tests to assess mechanical and cold allodynia after 21 days of chronic constriction injury (CCI) of the sciatic nerve or Sham procedure ("false operated"). Either the Cascade Blue 3000 MW lysine-fixable dextran (CBD) or the biotinylated dextran amine 3000 MW (BDA) neural tract tracer was microinjected into the PIC. The electrical PICS was performed at a low frequency (20 μA, 100 Hz) for 15 seconds by a deep brain stimulation device. PIC N-methyl-D-aspartate (NMDA) receptors (NMDAR) blockade with the selective antagonist LY235959 (at 2, 4, and 8 nmol/200 nL) followed by PICS was investigated in rats with CCI. RESULTS PIC sends projections to the caudal pontine reticular nucleus, alpha part of the parvicellular reticular nucleus, dorsomedial tegmental area, and secondary somatosensory cortex (S2). PICS decreased both mechanical and cold allodynia in rats with chronic NP. Blockade of NMDAR in the PIC with LY235959 at 8 nmol attenuated PICS-produced antinociception. CONCLUSION Neuroanatomic projections from the PIC to pontine reticular nuclei and S2 may contribute to chronic NP signaling. PICS attenuates the chronic NP, and the NMDA glutamatergic system in the PIC may be involved in PICS-induced antinociception in rodents with NP conditions.
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Affiliation(s)
- Renata Cristina Martins Pereira
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Laboratory of Neurosciences of Pain & Emotions, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Brain Protection Laboratory in Childhood, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Priscila Medeiros
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Laboratory of Neurosciences of Pain & Emotions, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Department of Neurosciences and Behavioral Sciences. Department of Pharmacology. Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Federal University of São Carlos Pain Clinic, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Norberto Cysne Coimbra
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Department of Neurosciences and Behavioral Sciences. Department of Pharmacology. Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Behavioural Neurosciences Institute, Ribeirão Preto, São Paulo, Brazil
| | - Hélio Rubens Machado
- Brain Protection Laboratory in Childhood, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Renato Leonardo de Freitas
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Laboratory of Neurosciences of Pain & Emotions, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Department of Neurosciences and Behavioral Sciences. Department of Pharmacology. Ribeirão Preto Medical School of the University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Behavioural Neurosciences Institute, Ribeirão Preto, São Paulo, Brazil.
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Liu N, Zhang GX, Zhu CH, Lan XB, Tian MM, Zheng P, Peng XD, Li YX, Yu JQ. Antinociceptive and neuroprotective effect of echinacoside on peripheral neuropathic pain in mice through inhibiting P2X7R/FKN/CX3CR1 pathway. Biomed Pharmacother 2023; 168:115675. [PMID: 37812887 DOI: 10.1016/j.biopha.2023.115675] [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: 08/03/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/11/2023] Open
Abstract
Clinically, neuropathic pain treatment remains a challenging issue because the major therapy, centred around pharmacological intervention, is not satisfactory enough to patient by reason of low effectiveness and more adverse reaction. Therefore, it is still necessary to find more effective and safe therapy to ameliorate neuropathic pain. The purpose of this study was to explore the antinociceptive effect of Echinacoside (ECH), an active compound of Cistanche deserticola Ma, on peripheral neuropathic pain induced by chronic constriction injury (CCI) in mice, and to demonstrate its potential mechanism in vivo and vitro. In the present study, results showed that intraperitoneal administration of ECH (50, 100, and 200 mg/kg) could alleviate mechanical allodynia, cold allodynia and thermal hyperalgesia via behavioural test. Moreover, the structure and function of injured sciatic nerve by CCI were taken a turn for the better to a certain extent after ECH treatment using histopathological and electrophysiological test. Furthermore, ECH repressed the expression of the P2X7R and FKN and reduced the expression and release of the IL-1β, IL-6 and TNF-α. Besides, ECH could decrease Ca2+ influx and Cats efflux and inhibit phosphorylation of p38MAPK. To sum up, the present study illustrated that ECH could alleviate peripheral neuropathic pain by inhibiting microglia overactivation and inflammation through P2X7R/FKN/CX3CR1 signalling pathway in spinal cord. This study would provide a new perspective and strategy for the pharmacological treatment on neuropathic pain.
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Affiliation(s)
- Ning Liu
- Ningxia Key Laboratory of Drug Development and Generic Drug Research, School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Guo-Xin Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chun-Hao Zhu
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiao-Bing Lan
- Ningxia Key Laboratory of Drug Development and Generic Drug Research, School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Miao-Miao Tian
- Ningxia Key Laboratory of Drug Development and Generic Drug Research, School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Ping Zheng
- Ningxia Key Laboratory of Drug Development and Generic Drug Research, School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Xiao-Dong Peng
- Ningxia Key Laboratory of Drug Development and Generic Drug Research, School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Yu-Xiang Li
- School of Nursing, Ningxia Medical University, Yinchuan, China.
| | - Jian-Qiang Yu
- Ningxia Key Laboratory of Drug Development and Generic Drug Research, School of Pharmacy, Ningxia Medical University, Yinchuan, China.
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Wu D, Wang P, Zhao C, Su J, Zhang J, Ma W, Zhang Y, Xu H. Levo-tetrahydropalmatine ameliorates neuropathic pain by inhibiting the activation of the Clec7a-MAPK/NF-κB-NLRP3 inflammasome axis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 121:155075. [PMID: 37741158 DOI: 10.1016/j.phymed.2023.155075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 08/27/2023] [Accepted: 09/09/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND Because of the complex pathogenesis of neuropathic pain (NP), the therapeutic efficacy of existing drugs is not satisfactory. Accumulating studies have indicated that neuroinflammation may play a key role in NP onset and progression. Levo-tetrahydropalmatine (l-THP) has been extensively used for relieving chronic pain for decades. However, its potential mechanisms against NP have not yet been fully elucidated. PURPOSE Exploring and elucidating the therapeutic effect and pharmacological mechanism of l-THP in treating NP. METHODS RNA-seq and bioinformatics analyses were carried out to identify effective target profiling of I-THP in chronic constrictive injury (CCI) rats. The I-THP related hub targets and signaling pathways were obtained via bioinformatics analysis, then subjected to in-depth analyses through experiments in vivo. A gain-of-function study further confirmed the role of Clec7a in l-THP-mediated pain relief. Finally, the interaction between l-THP and Clec7a was verified through molecular docking and surface plasmon resonance (SPR). RESULTS l-THP treatment effectively alleviated mechanical and thermal allodynia in NP model rats. Functionally, the I-THP effective targets were mainly enriched in inflammatory response-related pathways. Furthermore, Clec7a-MAPK/NF-κB-NLRP3 inflammasome axis was selected as one of the potential pathways of l-THP against NP. Mechanically, l-THP markedly reduced CCI-induced Clec7a overexpression, significantly inhibited the Clec7a-triggered phosphorylation of MAPK and NF-κB-p65, and decreased the expression of pyroptosis-related protein NLRP3 and Caspase-1-p20. The analgesic effect of l-THP on NP was partly eliminated when transfecting the overexpression vector virus pLVSO5Clec7a. Importantly, molecular docking and SPR data revealed that l-THP directly binds with the Clec7a protein. CONCLUSION This study is the first to indicate that l-THP may exert an analgesic effect through inhibiting neuroinflammation via the Clec7a-MAPK/NF-κB-NLRP3 inflammasome axis, supporting the clinical utility of l-THP in NP therapy.
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Affiliation(s)
- Dan Wu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China
| | - Ping Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China
| | - Chunhui Zhao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China
| | - Jin Su
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China
| | - Junhong Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China
| | - Wangming Ma
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China
| | - Yanqiong Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China.
| | - Haiyu Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, PR China.
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Shang J, Jiang C, Cai J, Chen Z, Jin S, Wang F, Liang W, Wang Y, Zhang S, Hu X. Knowledge Mapping of Macrophage in Spinal Cord Injury: A Bibliometric Analysis. World Neurosurg 2023; 180:e183-e197. [PMID: 37714458 DOI: 10.1016/j.wneu.2023.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Spinal cord injury (SCI) is a devastating condition, often leading to significant disability and impairment. As crucial immune cells, macrophages play a critical role in the pathophysiology of SCI. Understanding the current state of knowledge and research trends related to macrophages in SCI is crucial for developing effective therapeutic interventions. METHODS Using search strategies, we retrieved relevant articles from the Web of Science Core Collection (WOSCC), resulting in a robust dataset for analysis. VOSviewer, Citespace, and PRISM were employed for analysis and visualization. Various bibliometric indicators, including publication trends, citation analysis, co-authorship networks, and keyword analysis, were utilized to assess the scholarly landscape of macrophage research in SCI. RESULTS Our findings revealed a steady increase in publications over the past 33 years, indicating a growing interest in this field. We identified Popovich Phillip G was the most influential author, Ohio State University was the most influential institution, and identification of 2 distinct macrophage subsets with divergent effects causing either neurotoxicity or regeneration in the injured mouse spinal cord was the most influential paper in this field. CONCLUSIONS This bibliometric analysis provides a comprehensive overview of the current knowledge landscape and research trends regarding macrophages in SCI. Neuroinflammation and macrophage polarization, transplation and molecular mechanism were emerging research areas and novel directions. Our study serves as a valuable resource for researchers in spinal cord injury research and therapeutic development.
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Affiliation(s)
- JinXiang Shang
- Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing City, China
| | - Chao Jiang
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - Junhui Cai
- Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing City, China
| | - ZhuoLin Chen
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - SongTao Jin
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - Fei Wang
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China
| | - WenQing Liang
- Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine, Zhoushan City, China
| | - YaQing Wang
- Orthopedics, Affiliated Hospital of Shaoxing University, Shaoxing City, China
| | - SongOu Zhang
- School of Medicine, Ningbo University, Ningbo City, China
| | - Xujun Hu
- Orthopedics, Shaoxing People's Hospital, Shaoxing City, China.
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105
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Sosa MKS, Boorman DC, Keay KA. The impact of sciatic nerve injury and social interactions testing on glucocorticoid receptor expression in catecholaminergic medullary cell populations. Brain Res 2023; 1819:148542. [PMID: 37604315 DOI: 10.1016/j.brainres.2023.148542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/09/2023] [Accepted: 08/18/2023] [Indexed: 08/23/2023]
Abstract
Paradoxically, while acute pain leads to transiently elevated corticosterone, chronic pain does not result in persistently elevated corticosterone. In the sciatic nerve chronic constriction injury (CCI) model of chronic pain, we have shown that the same nerve injury produces a range of behavioural outcomes, each associated with distinctive adaptations to the HPA-axis to achieve stable plasma corticosterone levels. We also demonstrated that CRF and GR expression in the paraventricular hypothalamus (PVH) was increased in rats that showed persistent changes to their social behaviours during Resident-Intruder testing ('Persistent Effect' rats) when compared to rats that showed no behavioural changes ('No Effect' rats). In this study, we investigated whether these changes were driven in part by altered sensitivity of the brainstem catecholaminergic pathways (known to regulate the PVH) to glucocorticoids. GR expression in adrenergic (C1,C2) and noradrenergic (A1,A2) cells was determined using immunohistochemistry in behaviourally tested CCI rats and in uninjured controls. We found no differences between Persistent Effect and No Effect rats in (1) the glucocorticoid sensitivity of these cells, or (2) the numbers of adrenergic and noradrenergic cells in each region. However, we discovered an overall reduction in GR expression in the non-catecholaminergic cells of these regions in both experimental groups when compared to uninjured controls, most likely attributable to the repeated Resident-Intruder testing. Taken together, these data suggest strongly that brainstem mechanisms are unlikely to play a key role in the rebalancing of the HPA-axis triggered by CCI, increasing the probability that these changes are driven by supra-hypothalamic regions.
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Affiliation(s)
- Maria K S Sosa
- School of Medical Sciences and the Brain and Mind Centre, The University of Sydney, New South Wales 2006, Australia
| | - Damien C Boorman
- School of Medical Sciences and the Brain and Mind Centre, The University of Sydney, New South Wales 2006, Australia
| | - Kevin A Keay
- School of Medical Sciences and the Brain and Mind Centre, The University of Sydney, New South Wales 2006, Australia.
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Hösch NG, Martins BB, Alcantara QA, Bufalo MC, Neto BS, Chudzinki-Tavassi AM, Santa-Cecilia FV, Cury Y, Zambelli VO. Wnt signaling is involved in crotalphine-induced analgesia in a rat model of neuropathic pain. Eur J Pharmacol 2023; 959:176058. [PMID: 37739305 DOI: 10.1016/j.ejphar.2023.176058] [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: 06/15/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
The aberrant activation of Wnt/β-catenin and atypical Wnt/Ryk signaling pathways in the spinal cord is critical for the development and maintenance of neuropathic pain. Crotalphine is a structural analog to a peptide first identified in Crotalus durissus terrificus snake venom, which induces antinociception by activating kappa-opioid and CB2 cannabinoid receptors. Consistent with previous data, we showed that the protein levels of the canonical Wnt/β-catenin and the atypical Wnt/Ryk signaling pathways are increased in neuropathic rats. Importantly, the administration of crotalphine downregulates these protein levels, including its downstream cascades, such as TCF4 from the canonical pathway and NR2B glutamatergic receptor and Ca2+-dependent signals, via the Ryk receptor. The CB2 receptor antagonist, AM630, abolished the crotalphine-induced atypical Wnt/Ryk signaling pathway activation. However, the selective CB2 agonist affects both canonical and non-canonical Wnt signaling in the spinal cord. Next, we showed that crotalphine blocked hypersensitivity and significantly decreased the concentration of IL-1ɑ, IL-1β, IL-6, IL-10, IL-18, TNF-ɑ, MIP-1ɑ and MIP-2 induced by intrathecal injection of exogenous Wnt-3a agonist. Taken together, our findings show that crotalphine induces analgesia in a neuropathic pain model by down-regulating the canonical Wnt/β-catenin and the atypical Wnt/Ryk signaling pathways and, consequently controlling neuroinflammation. This effect is, at least in part, mediated by CB2 receptor activation. These results open a perspective for new approaches that can be used to target Wnt signaling in the context of chronic pain. PERSPECTIVE: Our work identified that crotalphine-induced activation of CB2 receptors plays a critical role in the impairment of Wnt signaling during neuropathic pain. This work suggests that drugs with opioid/cannabinoid activity may be a useful strategy to target Wnt signaling in the context of chronic pain.
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Affiliation(s)
- Natália G Hösch
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil; Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, Av. Prof. Lineu Prestes, 1524, 05508-900, São Paulo, Brazil
| | - Bárbara B Martins
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - Queren A Alcantara
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil; Department of Biochemistry, University of Utah, Salt Lake City, UT, 84112, USA
| | - Michelle Cristiane Bufalo
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil; Center of Excellence in New Target Discovery (CENTD), Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - Beatriz S Neto
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - Ana Marisa Chudzinki-Tavassi
- Center of Excellence in New Target Discovery (CENTD), Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil; Innovation and Development Laboratory, Innovation and Development Center, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - Flávia V Santa-Cecilia
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - Yara Cury
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - Vanessa O Zambelli
- Laboratory of Pain and Signaling, Butantan Institute, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil.
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Basbaum AI, Jensen TS, Keefe FJ. Fifty years of pain research and clinical advances: highlights and key trends. Pain 2023; 164:S11-S15. [PMID: 37831954 PMCID: PMC10787538 DOI: 10.1097/j.pain.0000000000003058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/31/2023] [Indexed: 10/15/2023]
Abstract
ABSTRACT This article highlights advances in basic science preclinical pain research, clinical research, and psychological research occurring over the 50 years since the International Association for the Study of Pain was founded. It presents important findings and key trends in these 3 areas of pain science: basic science preclinical research, clinical research, and psychological research.
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Affiliation(s)
- Allan I. Basbaum
- Department of Anatomy, University California San Francisco, San Francisco, CA USA 94158
| | - Troels. S Jensen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University Hosital, DK, 8200 Aarhus N, Denmark
| | - Francis J. Keefe
- Duke Pain Prevention and Treatment Research Program, Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA 27705
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Macionis V. Neurovascular Compression-Induced Intracranial Allodynia May Be the True Nature of Migraine Headache: an Interpretative Review. Curr Pain Headache Rep 2023; 27:775-791. [PMID: 37837483 DOI: 10.1007/s11916-023-01174-7] [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] [Accepted: 09/15/2023] [Indexed: 10/16/2023]
Abstract
PURPOSE OF REVIEW Surgical deactivation of migraine trigger sites by extracranial neurovascular decompression has produced encouraging results and challenged previous understanding of primary headaches. However, there is a lack of in-depth discussions on the pathophysiological basis of migraine surgery. This narrative review provides interpretation of relevant literature from the perspective of compressive neuropathic etiology, pathogenesis, and pathophysiology of migraine. RECENT FINDINGS Vasodilation, which can be asymptomatic in healthy subjects, may produce compression of cranial nerves in migraineurs at both extracranial and intracranial entrapment-prone sites. This may be predetermined by inherited and acquired anatomical factors and may include double crush-type lesions. Neurovascular compression can lead to sensitization of the trigeminal pathways and resultant cephalic hypersensitivity. While descending (central) trigeminal activation is possible, symptomatic intracranial sensitization can probably only occur in subjects who develop neurovascular entrapment of cranial nerves, which can explain why migraine does not invariably afflict everyone. Nerve compression-induced focal neuroinflammation and sensitization of any cranial nerve may neurogenically spread to other cranial nerves, which can explain the clinical complexity of migraine. Trigger dose-dependent alternating intensity of sensitization and its synchrony with cyclic central neural activities, including asymmetric nasal vasomotor oscillations, may explain the laterality and phasic nature of migraine pain. Intracranial allodynia, i.e., pain sensation upon non-painful stimulation, may better explain migraine pain than merely nociceptive mechanisms, because migraine cannot be associated with considerable intracranial structural changes and consequent painful stimuli. Understanding migraine as an intracranial allodynia could stimulate research aimed at elucidating the possible neuropathic compressive etiology of migraine and other primary headaches.
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ÖZDEMİR F, AKÇAY G, ÖZKINALI S, ÇELİK Ç. [6]-Shogaol and [6]-Gingerol active ingredients may improve neuropathic pain by suppressing cytokine levels in an experimental model. Turk J Med Sci 2023; 53:1593-1604. [PMID: 38813490 PMCID: PMC10760556 DOI: 10.55730/1300-0144.5728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 12/12/2023] [Accepted: 10/31/2023] [Indexed: 05/31/2024] Open
Abstract
Background/aim Neuropathic pain (NP) is a type of chronic pain usually caused by damage to the somatosensory system. Bioactive antioxidant compounds, such as curcumin and ginger, are widely preferred in the treatment of NP. However, the ingredient-based mechanism that underlies their pain-relieving activity remains unknown. The aim of this study was to investigate the therapeutic effects of trans-[6]-Shogaol and [6]-Gingerol active ingredients of the Zingiber officinale Roscoe extract on the spinal cord and cortex in the neuroinflammatory pathway in rats with experimental sciatic nerve injury. Materials and methods Forty-six volatile phenolic components were identified in ginger samples using gas chromatography-mass spectrometry analysis. Thirty 3-month-old male 250-300 g Wistar Albino rats were divided into three groups as (i) sham, (ii) chronic constriction injury (CCI), and (iii) CCI+ginger. NP was induced using the CCI model. A ginger extract treatment enriched with trans-[6]-shogaol and [6]-gingerol active ingredients was administered by gavage at 200 mg/kg/day for 7 days. On the 14th day of the experiment, locomotor activity was evaluated in open field and hyperalgesia in tail flick tests. Results In behavioural experiments, a significant decrease was observed in the CCI group compared to the sham group, while a significant increase was observed in the CCI+ginger group compared to the CCI group (p < 0.05). In the spinal cord and cortex tissues, there was a significant increase in the TNF-α, IL-1β, and IL-18 neuroinflammation results of the CCI group compared to the sham group, while there was a significant decrease in the CCI+ginger group compared to the CCI group. Conclusion In this study, ginger treatment was shown to have a therapeutic effect on neuroinflammation against sciatic nerve damage.
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Affiliation(s)
- Fikri ÖZDEMİR
- Department of Anatomy, Faculty of Medicine, Hitit University, Çorum,
Turkiye
| | - Güven AKÇAY
- Department of Biophysics, Faculty of Medicine, Hitit University, Çorum,
Turkiye
| | - Sevil ÖZKINALI
- Department of Chemistry, Faculty of Arts and Sciences, Hitit University, Çorum,
Turkiye
| | - Çağla ÇELİK
- Pharmacy Services Program, Vocational School of Health Services, Hitit University, Çorum,
Turkiye
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Chen K, Wei X, Wang R, Yang L, Zou D, Wang Y. BMP7 alleviates trigeminal neuralgia by reducing oligodendrocyte apoptosis and demyelination. J Headache Pain 2023; 24:143. [PMID: 37875834 PMCID: PMC10594892 DOI: 10.1186/s10194-023-01681-3] [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: 09/11/2023] [Accepted: 10/16/2023] [Indexed: 10/26/2023] Open
Abstract
BACKGROUND BMP7 has been shown to have neuroprotective effects and to alleviate demyelination. However, its role in trigeminal neuralgia (TN) has not been well investigated. The current study aims to determine whether BMP7 plays a role in demyelination, its effects on pain behaviors and mechanism of action in rats with TN. METHODS We used an infraorbital-nerve chronic-constriction injury (ION-CCI) to establish a rat model of TN. Adeno-associated viruses (AAVs) were injected into the rats to upregulate or downregulate BMP7. The mechanical withdrawal thresholds (MWT) of the injured rats were detected using Von Frey filaments. The changes in expression levels of BMP7 and oligodendrocyte (OL) markers were examined by western blotting, quantitative real-time PCR, immunofluorescence, and transmission electron microscopy. RESULTS The ION-CCI induced mechanical allodynia, demyelination, and loss of OLs with a reduction of BMP7. Short-hairpin RNA (shRNA)-BMP7 that inhibited BMP7 expression also caused mechanical allodynia, demyelination, and loss of OLs, and its mechanism may be OL apoptosis. Overexpressing BMP7 in the trigeminal spinal subnucleus caudalis(VC) with AAV-BMP7 relieved all three phenotypes induced by the CCI, and its mechanism may be alleviating OLs apoptosis. Two signal pathways associated with apoptosis, STAT3 and p65, were significantly downregulated in the VC after CCI and rescued by BMP7 overexpression. CONCLUSION BMP7 can alleviate TN by reducing OLs apoptosis and subsequent demyelination. The mechanism behind this protection could be BMP7-mediated activation of the STAT3 and NF-κB/p65 signaling pathway and subsequent decrease in OL apoptosis. Importantly, our study presents clear evidence in support of BMP7 as a possible therapeutic target for the treatment of TN.
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Affiliation(s)
- Kai Chen
- Department of Pain Management and Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Clinical Research Center for Pain Medicine in Hunan Province, Changsha, Hunan, China
| | - Xiaojin Wei
- Department of Pain Management and Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100054, China
| | - Ruixuan Wang
- Bourns Engineering, The University of California, Riverside, CA, 92521, USA
| | - Lin Yang
- Department of Pain Management and Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Clinical Research Center for Pain Medicine in Hunan Province, Changsha, Hunan, China
| | - Dingquan Zou
- Department of Pain Management and Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Clinical Research Center for Pain Medicine in Hunan Province, Changsha, Hunan, China
| | - Yaping Wang
- Department of Pain Management and Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
- Clinical Research Center for Pain Medicine in Hunan Province, Changsha, Hunan, China.
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111
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Zhang H, Li A, Liu YF, Sun ZM, Jin BX, Lin JP, Yang Y, Yao YX. Spinal TAOK2 contributes to neuropathic pain via cGAS-STING activation in rats. iScience 2023; 26:107792. [PMID: 37720090 PMCID: PMC10502416 DOI: 10.1016/j.isci.2023.107792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 05/25/2023] [Accepted: 08/29/2023] [Indexed: 09/19/2023] Open
Abstract
Thousand and one amino acid kinase 2 (TAOK2) is a member of the mammalian sterile 20 kinase family and is implicated in neurodevelopmental disorders; however, its role in neuropathic pain remains unknown. Here, we found that TAOK2 was enriched and activated after chronic constriction injury (CCI) in the rat spinal dorsal horn. Meanwhile, cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS)-stimulator of interferon genes (STING) signaling was also activated with hyperalgesia. Silencing TAOK2 reversed hyperalgesia and suppressed the activation of cGAS-STING signaling induced by CCI, while pharmacological activation of TAOK2 induced pain hypersensitivity and upregulation of cGAS-STING signaling in naive rats. Furthermore, pharmacological inhibition or gene silencing of cGAS-STING signaling attenuated CCI-induced hyperalgesia. Taken together, these data demonstrate that the activation of spinal TAOK2 contributes to CCI-induced hyperalgesia via cGAS-STING signaling activation, providing new molecular targets for the treatment of neuropathic pain.
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Affiliation(s)
- Hui Zhang
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
| | - Ang Li
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
- Department of Anesthesia, People’s Hospital of Guizhou Province, Guiyang, Guizhou 550025, China
| | - Yu-Fan Liu
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
| | - Zhong-Ming Sun
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
| | - Bing-Xin Jin
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
| | - Jia-Piao Lin
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
| | - Yan Yang
- Department of Neurobiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310020, China
- Centre for Neuroscience, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - Yong-Xing Yao
- Department of Anesthesia, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
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Vacca V, Rossi C, Pieroni L, De Angelis F, Giacovazzo G, Cicalini I, Ciavardelli D, Pavone F, Coccurello R, Marinelli S. Sex-specific adipose tissue's dynamic role in metabolic and inflammatory response following peripheral nerve injury. iScience 2023; 26:107914. [PMID: 37817933 PMCID: PMC10561049 DOI: 10.1016/j.isci.2023.107914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/30/2023] [Accepted: 09/12/2023] [Indexed: 10/12/2023] Open
Abstract
Epidemiological data and research highlight increased neuropathy and chronic pain prevalence among females, spanning metabolic and normometabolic contexts, including murine models. Prior findings demonstrated diverse immune and neuroimmune responses between genders in neuropathic pain (NeP), alongside distinct protein expression in sciatic nerves. This study unveils adipose tissue's (AT) role in sex-specific NeP responses after peripheral nerve injury. Metabolic assessments, metabolomics, energy expenditure evaluations, AT proteomic analyses, and adipokine mobilization depict distinct AT reactions to nerve damage. Females exhibit altered lipolysis, fatty acid oxidation, heightened energy expenditure, and augmented steroids secretion affecting glucose and insulin metabolism. Conversely, male neuropathy prompts glycolysis, reduced energy expenditure, and lowered unsaturated fatty acid levels. Males' AT promotes regenerative molecules, oxidative stress defense, and stimulates peroxisome proliferator-activated receptors (PPAR-γ) and adiponectin. This study underscores AT's pivotal role in regulating gender-specific inflammatory and metabolic responses to nerve injuries, shedding light on female NeP susceptibility determinants.
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Affiliation(s)
- Valentina Vacca
- National Council of Research - Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
| | - Claudia Rossi
- Department of Innovative Technologies in Medicine and Dentistry, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology (CAST), "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Luisa Pieroni
- Departmental Faculty of Medicine, UniCamillus - Saint Camillus International University of Health Sciences, 00131 Rome, Italy
- European Center for Brain Research/Santa Lucia Foundation IRCCS, 00143 Rome, Italy
| | - Federica De Angelis
- National Council of Research - Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
- European Center for Brain Research/Santa Lucia Foundation IRCCS, 00143 Rome, Italy
| | - Giacomo Giacovazzo
- European Center for Brain Research/Santa Lucia Foundation IRCCS, 00143 Rome, Italy
- Università degli studi di Teramo (UniTE) - Facoltà di Medicina Veterinaria, 64100 Teramo, Italy
| | - Ilaria Cicalini
- Department of Innovative Technologies in Medicine and Dentistry, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology (CAST), "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Domenico Ciavardelli
- Center for Advanced Studies and Technology (CAST), "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
- School of Medicine, University Kore of Enna, Enna, Italy
| | - Flaminia Pavone
- National Council of Research - Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
| | - Roberto Coccurello
- European Center for Brain Research/Santa Lucia Foundation IRCCS, 00143 Rome, Italy
- Institute for Complex Systems (ISC), National Council of Research (CNR), 00185 Rome, Italy
| | - Sara Marinelli
- National Council of Research - Institute of Biochemistry and Cell Biology, Monterotondo (RM), Italy
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Micheli L, Rajamoni J, Di Cesare Mannelli L, Rajagopalan P, Ghelardini C, Rajagopalan R. DDD-028: A potent, neuroprotective, non-opioid compound for the treatment of diabetic neuropathy. Bioorg Med Chem Lett 2023; 95:129472. [PMID: 37690597 DOI: 10.1016/j.bmcl.2023.129472] [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: 07/25/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
Diabetic neuropathy (DN) is a painful, chronic ailment that affects a large segment of diabetic population worldwide. Current medications such as pregabalin or duloxetine treat only the pain symptom associated with DN, but not the underlying nerve damage. DDD-028 (1) is a small molecule that displays potent pain-relieving activity in streptozotocin (STZ)-induced rodent model of DN. Combined with other studies indicating that DDD-028 suppresses astrogliosis and nerve damage induced by the anti-cancer drug, paclitaxel, the present study suggests that DDD-028 would be useful as a disease modifying therapeutic in the treatment of DN. The 3-dimensional structure of DDD-028 was confirmed by single crystal X-ray crystallography.
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Affiliation(s)
- Laura Micheli
- Department of Neuroscience, Psychology, Drug Research and Child Health, NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Jagan Rajamoni
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, One University Blvd., St. Louis, MO 63121, USA
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health, NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | | | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health, NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, Florence, Viale Pieraccini 6, 50139 Florence, Italy
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Suárez-Rojas I, Pérez-Fernández M, Bai X, Martínez-Martel I, Intagliata S, Pittalà V, Salerno L, Pol O. The Inhibition of Neuropathic Pain Incited by Nerve Injury and Accompanying Mood Disorders by New Heme Oxygenase-1 Inducers: Mechanisms Implicated. Antioxidants (Basel) 2023; 12:1859. [PMID: 37891937 PMCID: PMC10603856 DOI: 10.3390/antiox12101859] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
Neuropathic pain is a type of pain that persists for a long time and becomes pathological. Additionally, the anxiodepressive disorders derived from neuropathic pain are difficult to palliate with the current treatments and need to be resolved. Then, using male mice with neuropathic pain provoked by chronic constriction of the sciatic nerve (CCI), we analyzed and compared the analgesic actions produced by three new heme oxygenase 1 (HO-1) inducers, 1m, 1b, and 1a, with those performed by dimethyl fumarate (DMF). Their impact on the anxiety- and depressive-like comportments and the expression of the inflammasome NLRP3, Nrf2, and some antioxidant enzymes in the dorsal root ganglia (DRG) and amygdala (AMG) were also investigated. Results revealed that the administration of 1m, 1b, and DMF given orally for four days inhibited the allodynia and hyperalgesia caused by CCI, while 1a merely reduced the mechanical allodynia. However, in the first two days of treatment, the antiallodynic effects produced by 1m were higher than those of 1a and DMF, and its antihyperalgesic actions were greater than those produced by 1b, 1a, and DMF, revealing that 1m was the most effective compound. At four days of treatment, all drugs exerted anxiolytic and antidepressant effects, decreased the NLRP3 levels, and increased/normalized the Nrf2, HO-1, and superoxide dismutase 1 levels in DRG and AMG. Data indicated that the dual modulation of the antioxidant and inflammatory pathways produced by these compounds, especially 1m, is a new promising therapeutic approach for neuropathic pain and related emotional illnesses.
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Affiliation(s)
- Irene Suárez-Rojas
- Grup de Neurofarmacologia Molecular, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Grup de Neurofarmacologia Molecular, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Montse Pérez-Fernández
- Grup de Neurofarmacologia Molecular, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Grup de Neurofarmacologia Molecular, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Xue Bai
- Grup de Neurofarmacologia Molecular, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Grup de Neurofarmacologia Molecular, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Ignacio Martínez-Martel
- Grup de Neurofarmacologia Molecular, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Grup de Neurofarmacologia Molecular, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | | | - Valeria Pittalà
- Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
- Department of Molecular Medicine, Princess Al Jawhara Centre for Molecular Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama 329, Bahrain
| | - Loredana Salerno
- Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
| | - Olga Pol
- Grup de Neurofarmacologia Molecular, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Grup de Neurofarmacologia Molecular, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
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Wan K, Jia M, Zhang H, Lan Y, Wang S, Zhang K, Wang Z, Zhu H, Zheng X, Luo Y, Pei L, Wu C, Liu Y, Li M. Electroacupuncture Alleviates Neuropathic Pain by Suppressing Ferroptosis in Dorsal Root Ganglion via SAT1/ALOX15 Signaling. Mol Neurobiol 2023; 60:6121-6132. [PMID: 37421564 DOI: 10.1007/s12035-023-03463-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/22/2023] [Indexed: 07/10/2023]
Abstract
Neuropathic pain affects globally about 7-10% of the general population. Electroacupuncture (EA) effectively relieves neuropathic pain symptoms without causing any side effects; however, the underlying molecular mechanisms remain unclear. We established a chronic constriction injury (CCI)-induced rat model of neuropathic pain. RNA sequencing was used to screen for differentially expressed genes in the dorsal root ganglion after CCI and EA treatment. We identified gene markers of ferroptosis spermidine/spermine N1-acetyltransferase 1 (Sat1) and arachidonate 15-lipoxygenase (Alox15) to be dysregulated in the CCI-induced neuropathic pain model. Furthermore, EA relieved CCI-induced pain as well as ferroptosis-related symptoms in the dorsal root ganglion, including lipid peroxidation and iron overload. Finally, SAT1 knockdown also alleviated mechanical and thermal pain hypersensitivity and reversed ferroptosis damage. In conclusion, we showed that EA inhibited ferroptosis by regulating the SAT1/ALOX15 pathway to treat neuropathic pain. Our findings provide insight into the mechanisms of EA and suggest a novel therapeutic target for neuropathic pain.
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Affiliation(s)
- Kexing Wan
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China
| | - Min Jia
- Clinical Laboratories, Wuhan First Hospital, Wuhan, 430030, China
| | - Hong Zhang
- School of Clinical Medicine, Hubei University of Science and Technology, Xianning, 437000, China
| | - Yuye Lan
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China
| | - Suixi Wang
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China
| | - Kailing Zhang
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China
| | - Zixiao Wang
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China
| | - He Zhu
- Department of Clinical Research Institute, Central People's Hospital of Zhanjiang, Zhanjiang, 524000, China
| | - Xunan Zheng
- Department of Clinical Research Institute, Central People's Hospital of Zhanjiang, Zhanjiang, 524000, China
| | - Yi Luo
- Department of Clinical Research Institute, Central People's Hospital of Zhanjiang, Zhanjiang, 524000, China
| | - Lei Pei
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China
| | - Caihua Wu
- Department of Acupuncture, Wuhan First Hospital, Wuhan, 430030, China.
| | - Yongmin Liu
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China.
- Department of Physiology, Medical College of Shihezi University, Shihezi, 832002, China.
| | - Man Li
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, China.
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Haghighat Lari MM, Banafshe HR, Seyed Hosseini E, Haddad Kashani H. The effect of risperidone on behavioral reactions and gene expression of pro- and anti-inflammatory cytokines in neuropathic pain model induced by chronic constriction injury of the sciatic nerve in rat. Inflammopharmacology 2023; 31:2641-2652. [PMID: 37535213 DOI: 10.1007/s10787-023-01293-y] [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: 02/28/2023] [Accepted: 07/06/2023] [Indexed: 08/04/2023]
Abstract
BACKGROUND Neuropathic pain results from lesions or diseases affecting the somatosensory system. The management of a patient with chronic neuropathic pain remains a challenge several studies report the analgesic effect of serotonin receptor antagonists in different models of experimental pain. The present study was designed to study the effect of systemic administration of risperidone, on behavioral scores of neuropathic pains in chronic constriction (CCI) model in rats. METHODS Inducing neuropathic pain with the CCI model which causes heat hyperalgesia, heat, and mechanical allodynia was performed on rats, and then, in two phases, risperidone effect was determined. In the acute phase, risperidone 1, 2, 4 mg was administered for three groups half an hour before behavioral tests on the 7th, 14th, and 21st day after surgery, and in the chronic phase, risperidone 1, 2, and 4 mg was administered for three different groups from the 1st to 14th days after surgery than on 14th-day behavioral scores were performed. For gene expression analysis, samples are taken from spinal cord tissues in lumbar segments. RESULTS This study shows chronic administration of risperidone as an antipsychotic drug was effective on heat hyperalgesia and allodynia. However, only the max dosage (4 mg) of risperidone showed meaningful improvement in increasing mechanical allodynia. However, acute administering of risperidone did not show any meaningful changes in behavioral tests on neuropathic pain induced by chronic constriction injury of the sciatic nerve in rats. In addition, gene expression results showed an increase in IL-4 and IL-10 gene expression in the risperidone group compared to the sham group. CONCLUSION This study suggests the helpful preventive effects of risperidone in developing and increasing neuropathic pain, but it does not have any instant effect.
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Affiliation(s)
| | - Hamid Reza Banafshe
- Department of Pharmacology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Elahe Seyed Hosseini
- Gametogenesis Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Hamed Haddad Kashani
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Kim HW, Shim SW, Zhao AM, Roh D, Han HM, Middleton SJ, Kim W, Chung S, Johnson E, Prentice J, Tacon M, Koel-Simmelink MJ, Wieske L, Teunissen CE, Bae YC, Bennett DL, Rinaldi S, Davies AJ, Oh SB. Long-term tactile hypersensitivity after nerve crush injury in mice is characterized by the persistence of intact sensory axons. Pain 2023; 164:2327-2342. [PMID: 37366595 PMCID: PMC10502897 DOI: 10.1097/j.pain.0000000000002937] [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: 10/17/2022] [Revised: 04/05/2023] [Accepted: 04/12/2023] [Indexed: 06/28/2023]
Abstract
ABSTRACT Traumatic peripheral nerve injuries are at high risk of neuropathic pain for which novel effective therapies are urgently needed. Preclinical models of neuropathic pain typically involve irreversible ligation and/or nerve transection (neurotmesis). However, translation of findings to the clinic has so far been unsuccessful, raising questions on injury model validity and clinically relevance. Traumatic nerve injuries seen in the clinic commonly result in axonotmesis (ie, crush), yet the neuropathic phenotype of "painful" nerve crush injuries remains poorly understood. We report the neuropathology and sensory symptoms of a focal nerve crush injury using custom-modified hemostats resulting in either complete ("full") or incomplete ("partial") axonotmesis in adult mice. Assays of thermal and mechanically evoked pain-like behavior were paralleled by transmission electron microscopy, immunohistochemistry, and anatomical tracing of the peripheral nerve. In both crush models, motor function was equally affected early after injury; by contrast, partial crush of the nerve resulted in the early return of pinprick sensitivity, followed by a transient thermal and chronic tactile hypersensitivity of the affected hind paw, which was not observed after a full crush injury. The partially crushed nerve was characterized by the sparing of small-diameter myelinated axons and intraepidermal nerve fibers, fewer dorsal root ganglia expressing the injury marker activating transcription factor 3, and lower serum levels of neurofilament light chain. By day 30, axons showed signs of reduced myelin thickness. In summary, the escape of small-diameter axons from Wallerian degeneration is likely a determinant of chronic pain pathophysiology distinct from the general response to complete nerve injury.
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Affiliation(s)
- Hyoung Woo Kim
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Sang Wook Shim
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Anna Mae Zhao
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Dahee Roh
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Hye Min Han
- Department of Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Steven J. Middleton
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Wheedong Kim
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sena Chung
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Errin Johnson
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - John Prentice
- Oxford Institute for Radiation Oncology, Old Road Campus Research Building, University of Oxford, Oxford, United Kingdom
| | - Mike Tacon
- Department of Physics, Denys Wilkinson Building, University of Oxford, Oxford, United Kingdom
| | - Marleen J.A. Koel-Simmelink
- Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam Neuroscience, Neurodegeneration, Amsterdam UMC, Vrije Universiteit Amsterdam, the Netherlands
| | - Luuk Wieske
- Department of Neurology and Neurophysiology, Amsterdam UMC, Academisch Medisch Centrum, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Charlotte E. Teunissen
- Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam Neuroscience, Neurodegeneration, Amsterdam UMC, Vrije Universiteit Amsterdam, the Netherlands
| | - Yong Chul Bae
- Department of Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - David L.H. Bennett
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Simon Rinaldi
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Alexander J. Davies
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Seog Bae Oh
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
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118
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Park J, Roh J, Pan J, Kim YH, Park CK, Jo YY. Role of Resolvins in Inflammatory and Neuropathic Pain. Pharmaceuticals (Basel) 2023; 16:1366. [PMID: 37895837 PMCID: PMC10610411 DOI: 10.3390/ph16101366] [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: 08/17/2023] [Revised: 09/25/2023] [Accepted: 09/25/2023] [Indexed: 10/29/2023] Open
Abstract
Chronic pain is an unpleasant experience associated with actual or potential tissue damage. Inflammatory pain alerts the body to inflammation and promotes healing; however, unresolved inflammation can lead to chronic pain. Conversely, neuropathic pain, due to somatosensory damage, can be a disease in itself. However, inflammation plays a considerable role in the progression of both types of pain. Resolvins, derived from omega-3 fatty acids, actively suppress pro-inflammatory mediators and aid in the resolution of inflammation. Resolvins alleviate various inflammatory and neuropathic pain models by reducing hypersensitivity and regulating inflammatory cytokines and glial activation in the spinal cord and dorsal root ganglia. Thus, resolvins are a promising alternative for pain management with the potential to reduce the side effects associated with conventional medications. Continued research is crucial to unlock the therapeutic potential of resolvins and integrate them into effective clinical pain management strategies. This review aimed to evaluate the literature surrounding the resolvins in inflammatory and neuropathic pain.
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Affiliation(s)
- Jaeik Park
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Republic of Korea; (J.P.); (J.R.); (J.P.); (Y.H.K.)
| | - Jueun Roh
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Republic of Korea; (J.P.); (J.R.); (J.P.); (Y.H.K.)
| | - Jingying Pan
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Republic of Korea; (J.P.); (J.R.); (J.P.); (Y.H.K.)
- Department of Histology and Embryology, Medical School of Nantong University, Nantong 226007, China
| | - Yong Ho Kim
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Republic of Korea; (J.P.); (J.R.); (J.P.); (Y.H.K.)
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Republic of Korea; (J.P.); (J.R.); (J.P.); (Y.H.K.)
| | - Youn Yi Jo
- Department of Anesthesiology and Pain Medicine, Gil Medical Center, Gachon University, Incheon 21565, Republic of Korea
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Sanchez JE, Noor S, Sun MS, Zimmerly J, Pasmay A, Sanchez JJ, Vanderwall AG, Haynes MK, Sklar LA, Escalona PR, Milligan ED. The FDA-approved compound, pramipexole and the clinical-stage investigational drug, dexpramipexole, reverse chronic allodynia from sciatic nerve damage in mice, and alter IL-1β and IL-10 expression from immune cell culture. Neurosci Lett 2023; 814:137419. [PMID: 37558176 PMCID: PMC10552878 DOI: 10.1016/j.neulet.2023.137419] [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: 04/23/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/11/2023]
Abstract
During the onset of neuropathic pain from a variety of etiologies, nociceptors become hypersensitized, releasing neurotransmitters and other factors from centrally-projecting nerve terminals within the dorsal spinal cord. Consequently, glial cells (astrocytes and microglia) in the spinal cord are activated and mediate the release of proinflammatory cytokines that act to enhance pain transmission and sensitize mechanical non-nociceptive fibers which ultimately results in light touch hypersensitivity, clinically observed as allodynia. Pramipexole, a D2/D3 preferring agonist, is FDA-approved for the treatment of Parkinson's disease and demonstrates efficacy in animal models of inflammatory pain. The clinical-stage investigational drug, R(+) enantiomer of pramipexole, dexpramipexole, is virtually devoid of D2/D3 agonist actions and is efficacious in animal models of inflammatory and neuropathic pain. The current experiments focus on the application of a mouse model of sciatic nerve neuropathy, chronic constriction injury (CCI), that leads to allodynia and is previously characterized to generate spinal glial activation with consequent release IL-1β. We hypothesized that both pramipexole and dexpramipexole reverse CCI-induced chronic neuropathy in mice, and in human monocyte cell culture studies (THP-1 cells), pramipexole prevents IL-1β production. Additionally, we hypothesized that in rat primary splenocyte culture, dexpramixole increases mRNA for the anti-inflammatory and pleiotropic cytokine, interleukin-10 (IL-10). Results show that following intravenous pramipexole or dexpramipexole, a profound decrease in allodynia was observed by 1 hr, with allodynia returning 24 hr post-injection. Pramipexole significantly blunted IL-1β protein production from stimulated human monocytes and dexpramipexole induced elevated IL-10 mRNA expression from rat splenocytes. The data support that clinically-approved compounds like pramipexole and dexpramipexole support their application as anti-inflammatory agents to mitigate chronic neuropathy, and provide a blueprint for future, multifaceted approaches for opioid-independent neuropathic pain treatment.
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Affiliation(s)
- J E Sanchez
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - S Noor
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - M S Sun
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - J Zimmerly
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - A Pasmay
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - J J Sanchez
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - A G Vanderwall
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - M K Haynes
- Center for Molecular Discovery (CMD) Innovation, Discovery and Training Complex (IDTC), University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - L A Sklar
- Center for Molecular Discovery (CMD) Innovation, Discovery and Training Complex (IDTC), University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - P R Escalona
- Department of Psychiatry, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA; New Mexico VA Health Care System, Albuquerque NM 87108, USA
| | - E D Milligan
- Department of Neurosciences, School of Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
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Sun Y, Yu F, Cao W, Zhang W, Liu W, Dai F. Betulinic acid alleviates neuropathic pain induced by chronic constriction injury of the sciatic nerve in mice. Neurosci Lett 2023; 813:137429. [PMID: 37574162 DOI: 10.1016/j.neulet.2023.137429] [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: 06/17/2023] [Revised: 07/22/2023] [Accepted: 08/03/2023] [Indexed: 08/15/2023]
Abstract
Neuropathic pain refers to a type of pain that arises from primary damage and dysfunction within the nervous system. Addressing this condition presents significant challenges and complexities. Betulinic acid (BA), known for its potent antioxidative and anti-inflammatory properties, has garnered extensive attention; nevertheless, the impact upon neuropathic pain induced by CCI is still uncertain. This paper explores the analgesic effects concerning BA on mice experiencing neuropathic pain due to sciatic nerve injury. Throughout the experiment, mice with CCI received oral gavage of BA at dosages of 3, 10, and 30 mg/kg for consecutively 8 days from the 7th day post-surgery. To assess their responses, behavioral tests and sciatic functional index (SFI) evaluations were conducted on zeroth, seventh, eighth, tenth, twelveth and fourteenth day post-CCI. On day 14, histopathological examinations and measurements of biochemical markers were performed. Immunofluorescence techniques were employed to detect Nrf2 and glial cell activation, while the Western blot method was utilized to evaluate Nrf2/HO-1 protein levels and pro-inflammatory cytokine expression. The results elucidated that BA significantly alleviated hyperalgesia and allodynia, demonstrating a dose-dependent enhancement in sciatic nerve function and facilitating the recovery of sciatic nerve injury. Furthermore, BA prominently augmented the entire antioxidative capacity (T-AOC) and T-SOD levels, concomitantly reducing MDA concentrations. Notably, BA activated the Nrf2/HO-1 signaling pathway, inhibited glial cell activation, and downregulation of the expression levels of pro-inflammatory cytokines, specifically, TNF-α, IL-1β, and IL-6 were observed. As such, this study provides a basis to support BA as a candidate drug for the treatment of neuropathic pain, attributing its analgesic effects to its anti-inflammatory, antioxidative, and neuroprotective properties.
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Affiliation(s)
- Yong Sun
- Department of Pain Medicine, The Affiliated People's Hospital of Jiangsu University, Jiangsu 212000, China
| | - Fei Yu
- Department of Pain Medicine, The Affiliated People's Hospital of Jiangsu University, Jiangsu 212000, China
| | - Weibiao Cao
- Department of Pain Medicine, The Affiliated People's Hospital of Jiangsu University, Jiangsu 212000, China
| | - Wei Zhang
- Department of Pain Medicine, The Affiliated People's Hospital of Jiangsu University, Jiangsu 212000, China
| | - Wu Liu
- Department of Pain Medicine, The Affiliated People's Hospital of Jiangsu University, Jiangsu 212000, China
| | - Fucheng Dai
- Department of Pain Medicine, The Affiliated People's Hospital of Jiangsu University, Jiangsu 212000, China.
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Abbasi Z, Baluchnejadmojarad T, Roghani M, Susanabadi A, Farbin M, Mehrabi S. Acamprosate effect on neuropathic pain in rats: With emphasis on the role of ERK/MAPK pathway and SCN9A sodium channel. J Chem Neuroanat 2023; 131:102282. [PMID: 37142001 DOI: 10.1016/j.jchemneu.2023.102282] [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: 03/31/2023] [Revised: 04/26/2023] [Accepted: 04/30/2023] [Indexed: 05/06/2023]
Abstract
BACKGROUND Neuropathic pain is a chronic pain owing to nerve damage or diseases of the central nervous system (CNS). The expression of SCN9A, which encodes the Nav1.7 voltage-gated sodium channel and ERK have been found to change significantly in many cases of neuropathic pain. Here, we investigated effects of acamprosate on neuropathic pain, taking into account the crucial roles of SCN9A, the ERK signaling pathway, and inflammatory markers in a rat model of chronic constriction injury (CCI). METHODS Acamprosate (300 mg/kg) was injected intraperitoneally (i.p.) for 14 days. The tail-immersion, acetone, and formalin tests were used to determine behavioral tests such as heat allodynia, cold allodynia, and chemical hyperalgesia, respectively. Lumbar spinal cord was extracted and processed for Nissl staining. The amount of spinal SCN9A expression and ERK phosphorylation were examined using ELISA assay. RESULTS The expression of SCN9A, ERK, inflammatory cytokines (IL-6 and TNF-α), allodynia and hyperalgesia significantly increased on days 7 and 14 following CCI. The treatment not only reduced neuropathic pain but also blocked CCI's effects on SCN9A upregulation and ERK phosphorylation. CONCLUSION This research demonstrated that acamprosate reduces the neuropathic pain induced by CCI of the sciatic nerve in rats by preventing cell loss, inhibiting spinal SCN9A expression, ERK phosphorylation, and inflammatory cytokines, suggesting potential therapeutic implications of acamprosate administration for the treatment of neuropathic pain.
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Affiliation(s)
- Zeinab Abbasi
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Tourandokht Baluchnejadmojarad
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran; Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Roghani
- Neurophysiology Research Center, Shahed University, Tehran, Iran
| | - Alireza Susanabadi
- Department of Anesthesia and pain medicine, Arak University of Medical Sciences, Arak, Iran
| | - Mitra Farbin
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Soraya Mehrabi
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran; Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
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Zheng QM, Zhou ZR, Hou XY, Lv N, Zhang YQ, Cao H. Transcriptome Analysis of the Mouse Medial Prefrontal Cortex in a Chronic Constriction Injury Model. Neuromolecular Med 2023; 25:375-387. [PMID: 36971954 DOI: 10.1007/s12017-023-08742-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 03/03/2023] [Indexed: 03/29/2023]
Abstract
The medial prefrontal cortex (mPFC) is critical for both the sensory and emotional/cognitive components of pain. However, the underlying mechanism remains largely unknown. Here, we examined changes in the transcriptomic profiles in the mPFC of mice with chronic pain using RNA sequencing (RNA-seq) technology. A mouse model of peripheral neuropathic pain was established via chronic constriction injury (CCI) of the sciatic nerve. CCI mice developed sustained mechanical allodynia and thermal hyperalgesia, as well as cognitive impairment four weeks after surgery. RNA-seq was conducted 4 weeks after CCI surgery. Compared with contral group, RNA-seq identified a total 309 and 222 differentially expressed genes (DEGs) in the ipsilateral and contralateral mPFC of CCI model mice, respectively. GO analysis indicated that the functions of these genes were mainly enriched in immune- and inflammation-related processes such as interferon-gamma production and cytokine secretion. KEGG analysis further showed the enrichment of genes involved in the neuroactive ligand-receptor interaction signaling pathway and Parkinson disease pathway that have been reported to be importantly involved in chronic neuralgia and cognitive dysfunction. Our study may provide insights into the possible mechanisms underlying neuropathic pain and pain-related comorbidities.
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Affiliation(s)
- Qi-Min Zheng
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Zi-Rui Zhou
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Xin-Yu Hou
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Ning Lv
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Yu-Qiu Zhang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Hong Cao
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China.
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Reinhold AK, Hartmannsberger B, Burek M, Rittner HL. Stabilizing the neural barrier - A novel approach in pain therapy. Pharmacol Ther 2023; 249:108484. [PMID: 37390969 DOI: 10.1016/j.pharmthera.2023.108484] [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: 04/25/2023] [Revised: 06/08/2023] [Accepted: 06/26/2023] [Indexed: 07/02/2023]
Abstract
Chronic and neuropathic pain are a widespread burden. Incomplete understanding of underlying pathomechanisms is one crucial factor for insufficient treatment. Recently, impairment of the blood nerve barrier (BNB) has emerged as one key aspect of pain initiation and maintenance. In this narrative review, we discuss several mechanisms and putative targets for novel treatment strategies. Cells such as pericytes, local mediators like netrin-1 and specialized proresolving mediators (SPMs), will be covered as well as circulating factors including the hormones cortisol and oestrogen and microRNAs. They are crucial in either the BNB or similar barriers and associated with pain. While clinical studies are still scarce, these findings might provide valuable insight into mechanisms and nurture development of therapeutic approaches.
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Affiliation(s)
- Ann-Kristin Reinhold
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
| | - Beate Hartmannsberger
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
| | - Malgorzata Burek
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
| | - Heike L Rittner
- University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Oberdürrbacher Str. 6, 97080 Würzburg, Germany.
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Jain V, Sinha SK, Rustage K, Pareek A, Srivastava M, Meena MK, Shakya A, Gupta MM, Rai N, Pareek A, Ratan Y, Chen MH, Prasad SK, Ashraf GM. Solasodine Containing Solanum torvum L. Fruit Extract Prevents Chronic Constriction Injury-Induced Neuropathic Pain in Rats: In Silico and In Vivo Evidence of TRPV1 Receptor and Cytokine Inhibition. Mol Neurobiol 2023; 60:5378-5394. [PMID: 37314657 DOI: 10.1007/s12035-023-03412-w] [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: 03/20/2023] [Accepted: 05/29/2023] [Indexed: 06/15/2023]
Abstract
This study aimed to assess the efficacy of ethanolic extract of Solanum torvum L. fruit (EESTF) containing solasodine in treating chronic constriction injury (CCI)-induced neuropathic pain in rats. Three-dimensional (3D) simulation studies of solasodine binding were conducted on the TRPV1 receptor, IL-6, and TNF-α structures. For in vivo justification, an assessment of behavioral, biochemical, and histological changes was designed after a CCI-induced neuropathic pain model in rats. On days 7, 14, and 21, CCI significantly increased mechanical, thermal, and cold allodynia while producing a functional deficit. IL-6, TNF-α, TBARS, and MPO levels also increased. SOD levels of catalase and reduced glutathione levels also decreased. Administration of pregabalin (30 mg/kg, oral), solasodine (25 mg/kg, oral), and EESTF (100 and 300 mg/kg, oral) significantly reduced CCI-induced behavioral and biochemical changes (P < 0.05). The protective nature of EESTF was also confirmed by histological analysis. Capsaicin, a TRPV1 receptor agonist, abolished the antinociceptive effects of EESTF when used previously. From the observations of the docking studies, solasodine acted as an antagonist at TRPV1, whereas the docking scores of solasodine against TNF-α and IL-6 were reported to be -11.2 and -6.04 kcal/mol, respectively. The attenuating effect of EESTF might be related to its antagonistic effects on TRPV1, suppression of cytokines, and anti-inflammatory and antioxidant properties.
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Affiliation(s)
- Vivek Jain
- Department of Pharmaceutical Sciences, Mohanlal Sukhadia University, Udaipur, Rajasthan, India.
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India.
| | - Saurabh K Sinha
- Department of Pharmaceutical Sciences, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Kajol Rustage
- Department of Pharmaceutical Sciences, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Ashutosh Pareek
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India.
| | - Manish Srivastava
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Mukesh K Meena
- Department of Pharmaceutical Sciences, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Anshul Shakya
- Department of Pharmaceutical Science, Dibrugarh University, Dibrugarh, Assam, India
| | - Madan Mohan Gupta
- School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, St Augustine, Trinidad and Tobago
| | - Nitish Rai
- Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Aaushi Pareek
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Yashumati Ratan
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Min Hua Chen
- Department of Biomedical Engineering, Chung Yuan Christian University, Taoyuan City, Taiwan
| | | | - Ghulam Md Ashraf
- Department of Medical Laboratory Science, College of Health Sciences and Sharjah Institute for Medical Research, University of Sharjah, Sharjah, 27272, United Arab Emirates.
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Song W, Yong Y, Zhou Y, Lu L, Yu G, Tang W, Wang J, Guo J, Li L, Zhang L, Song J. Activation of P2X4 receptors in midbrain cerebrospinal fluid-contacting nucleus leads to mechanical hyperalgesia in chronic constriction injury rats. Purinergic Signal 2023; 19:481-487. [PMID: 36529845 PMCID: PMC10539240 DOI: 10.1007/s11302-022-09911-0] [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: 05/16/2022] [Accepted: 11/26/2022] [Indexed: 12/23/2022] Open
Abstract
Neuropathic pain is a refractory pain state, and its mechanism is still not clear. Previous studies have shown that the purine receptor P2X4R expressed on hyperactive microglia in the spinal cord is essential for the occurrence and development of neuropathic pain. The cerebrospinal fluid-contacting nucleus (CSF-contacting nucleus) in the midbrain has been found to play an important role in the descending inhibition system of modulation. However, there have been no studies on P2X4R in the CSF-contacting nucleus involved in neuropathic pain. To investigate whether P2X4R is expressed in the CSF-contacting nucleus and whether its expression in the CSF-contacting nucleus is involved in the regulation of neuropathic pain, we used a model of chronic sciatic nerve ligation injury (CCI) to simulate neuropathic pain conditions. Immunohistochemistry experiments were conducted to identify the expression of P2X4R in the CSF-contacting nuclei in CCI rats, and western blot analysis showed a significant increase in P2X4R levels 7 days after modeling. Then, we packaged a P2rx4 gene-targeting shRNA in scAAV9 to knock down the P2X4R level in the CSF-contacting nucleus, and we found that CCI-induced mechanical hyperalgesia was reversed. In conclusion, P2X4R expressed in the CSF-contacting nucleus is involved in the process of neuropathic pain, and downregulating P2X4R protein in the CSF-contacting nucleus can reverse the occurrence and development of hyperalgesia, which could represent a potent therapeutic strategy for neuropathic pain.
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Affiliation(s)
- Wei Song
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Yue Yong
- Research Institute of Acupuncture Anesthesia, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Yalan Zhou
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Liyue Lu
- Research Institute of Acupuncture Anesthesia, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Guijie Yu
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Wei Tang
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Jian Wang
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Jun Guo
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Lili Li
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China
| | - Licai Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221004, People's Republic of China.
| | - Jiangang Song
- Department of Anesthesiology, Shuguang Hospital Affiliated With Shanghai University of Traditional Chinese Medicine, No.528 Zhangheng Road, Shanghai, 201203, People's Republic of China.
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Gao C, Zhao Y, Yang T, Gao X, Meng C. Duhuo Jisheng decoction alleviates neuroinflammation and neuropathic pain by suppressing microglial M1 polarization: a network pharmacology research. J Orthop Surg Res 2023; 18:629. [PMID: 37635236 PMCID: PMC10463324 DOI: 10.1186/s13018-023-04121-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/21/2023] [Indexed: 08/29/2023] Open
Abstract
BACKGROUND Neuropathic pain (NP) is the most prevalent form of chronic pain resulting from nerve damage or injury. Despite the widespread use of Duhuo Jisheng decoction (DHJSD) in traditional Chinese medicine (TCM) to treat chronic pain, the mechanism underlying its analgesic action remains unclear. METHODS Using network pharmacology, we obtained DHJSD and NP-related target information from public databases to construct protein-protein interactions (PPI) and compound-target networks based on common target genes. These networks were further analyzed using gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG). The interaction between molecules was verified through molecular docking using AutoDock Tools software. Additionally, we treated a chronic constriction injury (CCI) rat model with DHJSD and determined the mechanical withdrawal threshold (MWT). We used an enzyme-linked immunosorbent assay kit to determine the levels of inflammatory cytokines. Furthermore, qRT-PCR was employed to analyze ACHE, NOS2, MAPK3, PTGS2, AKT1, and PPARG mRNA expression, and immunofluorescence was used to evaluate changes in microglia. RESULTS Our screening of compounds and targets identified 252 potential targets of DHJSD associated with NP. PPI analysis, along with GO and KEGG analyses, revealed that the potential mechanism of DHJSD in NP treatment may be related to inflammatory reactions, the IL-17 signaling pathway, MAP kinase activity, and endocrine activity. Based on molecular docking, the core target showed significant affinity for DHJSD's active components. Moreover, DHJSD treatment repaired the CCI-induced inflammatory reaction in the spinal cord while regulating the expression of ACHE, NOS2, MAPK3, PTGS2, AKT1, and PPARG mRNA. Immunofluorescence results indicated that the active components of DHJSD may regulate microglial M1 polarization to improve neuroinflammation, PPARG may have been involved in the process. CONCLUSION The multi-component, multi-target, and multi-pathway actions of DHJSD provide new insights into its therapeutic mechanism in NP.
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Affiliation(s)
- Chengcan Gao
- Department of Surgery, Jining No. 1 People's Hospital, Jining, 272000, Shandong, China
| | - Yulong Zhao
- Shandong First Medical University, Jinan, 250117, Shandong Province, China
| | - Tao Yang
- Department of Spine Surgery, Affiliated Hospital of Jining Medical University, 89 Guhuai Road, Jining, 272000, Shandong Province, China
| | - Xu Gao
- Department of Orthopaedic Surgery, Qingdao University, Qingdao City, 266071, China
| | - Chunyang Meng
- Department of Spine Surgery, Affiliated Hospital of Jining Medical University, 89 Guhuai Road, Jining, 272000, Shandong Province, China.
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Silva-Cardoso GK, Lazarini-Lopes W, Primini EO, Hallak JE, Crippa JA, Zuardi AW, Garcia-Cairasco N, Leite-Panissi CRA. Cannabidiol modulates chronic neuropathic pain aversion behavior by attenuation of neuroinflammation markers and neuronal activity in the corticolimbic circuit in male Wistar rats. Behav Brain Res 2023; 452:114588. [PMID: 37474023 DOI: 10.1016/j.bbr.2023.114588] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/26/2023] [Accepted: 07/16/2023] [Indexed: 07/22/2023]
Abstract
Chronic neuropathic pain (CNP) is a vast world health problem often associated with the somatosensory domain. This conceptualization is problematic because, unlike most other sensations that are usually affectively neutral and may present emotional, affective, and cognitive impairments. Neuronal circuits that modulate pain can increase or decrease painful sensitivity based on several factors, including context and expectation. The objective of this study was to evaluate whether subchronic treatment with Cannabidiol (CBD; 0.3, 3, and 10 mg/kg intraperitoneal route - i.p., once a day for 3 days) could promote pain-conditioned reversal, in the conditioned place preference (CPP) test, in male Wistar rats submitted to chronic constriction injury (CCI) of the sciatic nerve. Then, we evaluated the expression of astrocytes and microglia in animals treated with CBD through the immunofluorescence technique. Our results demonstrated that CBD promoted the reversal of CPP at 3 and 10 mg/kg. In CCI animals, CBD was able to attenuate the increase in neuronal hyperactivity, measured by FosB protein expression, in the regions of the corticolimbic circuit: anterior cingulate cortex (ACC), complex basolateral amygdala (BLA), granular layer of the dentate gyrus (GrDG), and dorsal hippocampus (DH) - adjacent to subiculum (CA1). CBD also prevented the increased expression of GFAP and IBA-1 in CCI animals. We concluded that CBD effects on CNP are linked to the modulation of the aversive component of pain. These effects decrease chronic neuronal activation and inflammatory markers in regions of the corticolimbic circuit.
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Affiliation(s)
- Gleice K Silva-Cardoso
- Department of Psychology, School of Philosophy, Science and Letters of Ribeirão Preto, University of São Paulo, Brazil; National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo, Brazil
| | - Willian Lazarini-Lopes
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Brazil; Department of Pharmacology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, SP 14049-900, Brazil
| | - Eduardo Octaviano Primini
- Department of Psychology, School of Philosophy, Science and Letters of Ribeirão Preto, University of São Paulo, Brazil
| | - Jaime E Hallak
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Brazil; National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo, Brazil
| | - José A Crippa
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Brazil; National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo, Brazil
| | - Antônio W Zuardi
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Brazil; National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo, Brazil
| | - Norberto Garcia-Cairasco
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Brazil; Department of Physiology, Ribeirão Preto School of Medicine, University of São Paulo, Brazil
| | - Christie R A Leite-Panissi
- Department of Psychology, School of Philosophy, Science and Letters of Ribeirão Preto, University of São Paulo, Brazil; National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo, Brazil.
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Gao X, Lin J, Sun L, Hu J, Gao W, Yu J. Activation of the N-methyl-D-aspartate receptor and calcium/calmodulin-dependent protein kinase IIα signal in the rostral anterior cingulate cortex is involved in pain-related aversion in rats with peripheral nerve injury. Behav Brain Res 2023; 452:114560. [PMID: 37394125 DOI: 10.1016/j.bbr.2023.114560] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/28/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
The rostral anterior cingulate cortex (rACC) of rat brain is associated with pain-related emotions. However, the underlying molecular mechanism remains unclear. Here, we investigated the effects of the N-methyl-D-aspartate (NMDA) receptor and Ca2+/Calmodulin-dependent protein kinase type II (CaMKII)α signal on pain-related aversion in the rACC of a rat model of neuropathic pain (NP). Mechanical and thermal hyperalgesia were examined using von Frey and hot plate tests in a rat model of NP induced by spared nerve injury (SNI) of the unilateral sciatic nerve. Bilateral rACC pretreatment with the CaMKII inhibitor tat-CN21 (derived from the cell-penetrating tat sequence and CaM-KIIN amino acids 43-63) or tat-Ctrl (the tat sequence and the scrambled sequence of CN21) was performed on postoperative days 29-35 in Sham rats or rats with SNI. Spatial memory performance was tested using an eight-arm radial maze on postoperative days 34-35. Pain-related negative emotions (aversions) were evaluated using the place escape/avoidance paradigm on postoperative day 35 following the spatial memory performance test. The percentage of time spent in the light area was used to assess pain-related negative emotions (i.e., aversion). The expression levels of the NMDA receptor GluN2B subunit, CaMKIIα, and CaMKII-Threonine at position 286 (Thr286) phosphorylation in contralateral rACC specimens were detected by Western blot or real time PCR following the aversion test. Our data showed that pretreatment of the rACC with tat-CN21 increased determinate behavior but did not alter hyperalgesia or spatial memory performance in rats with SNI. In addition, tat-CN21 reversed the enhanced CaMKII-Thr286 phosphorylation and had no effect on the upregulated expression of GluN2B, CaMKIIα protein, and mRNA. Our data suggested that activation of the NMDA receptor-CaMKIIα signal in rACC is associated with pain-related aversion in rats with NP. These data may provide a new approach for the development of drugs that modulate cognitive and emotional pain aspects.
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Affiliation(s)
- Xueqi Gao
- Experimental Center for Medical Research, School of Anesthesiology, Weifang Medical University, Weifang 261053, China
| | - Jinhai Lin
- Experimental Center for Medical Research, School of Anesthesiology, Weifang Medical University, Weifang 261053, China
| | - Lin Sun
- School of Psychology, Weifang Medical University, Weifang 261053, China
| | - Jun Hu
- Department of Anesthesiology, Weifang People's Hospital, Weifang 261044, China
| | - Wenjie Gao
- Department of Anesthesiology, Weifang People's Hospital, Weifang 261044, China
| | - Jianfeng Yu
- Experimental Center for Medical Research, School of Anesthesiology, Weifang Medical University, Weifang 261053, China.
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129
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Dent JO, Segal JP, Brécier A, Gowdy HGM, Dubois RM, Bannerman CA, Halievski K, Silva JR, Ghasemlou N. Advanced Dynamic Weight Bearing as an Observer-independent Measure of Hyperacute Hypersensitivity in Mice. Can J Pain 2023; 7:2249060. [PMID: 37885834 PMCID: PMC10599184 DOI: 10.1080/24740527.2023.2249060] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/16/2023] [Indexed: 10/28/2023]
Abstract
Background Standard methods assessing pain in rodents are often observer dependent, potentially resulting in biased outcomes. Advanced dynamic weight bearing (ADWB) offers an observer-independent approach that can provide objective, reliable data in preclinical pain research. Aims The aim of this study was to characterize the use of ADWB in assessing murine responses to allyl isothiocyanate (AITC)-induced hyperacute hypersensitivity and identify best practices for use of the device. Methods Male C57BL/6J mice received intraplantar injections of saline or 0.1% AITC solution and were assessed using the ADWB system; simultaneous observer-dependent durations of paw licking and biting were measured. ADWB data were analyzed using the proprietary software from Bioseb and correlated to observer-dependent results, with parameters assessed to optimize data collected. Results ADWB detected pain-directed changes in weight and surface area distribution in AITC-treated mice, with paw weight and surface area placement correlating to paw licking and biting. Optimization of adjustable threshold parameters allowed for reduced coefficients of variability and increased duration of validated data. Conclusions The ADWB assay provides an efficient and unbiased measure of chemical-induced hyperacute hypersensitivity in mice. ADWB detection parameters influence amount of validated data and variability, a consideration for data analysis in future studies.
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Affiliation(s)
- Jayne O. Dent
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Julia P. Segal
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Aurélie Brécier
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
- Department of Anesthesiology & Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Hailey G. M. Gowdy
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Rosalin M. Dubois
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Courtney A. Bannerman
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Katherine Halievski
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Jaqueline R. Silva
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
- Department of Anesthesiology & Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Nader Ghasemlou
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
- Department of Anesthesiology & Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada
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130
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Ball JB, McNulty CJ, Green-Fulgham SM, Dragavon JM, Correia Rocha IR, Finch MR, Prévost ED, Siddique II, Woodall BJ, Watkins LR, Baratta MV, Root DH. Combining RNAscope and immunohistochemistry to visualize inflammatory gene products in neurons and microglia. Front Mol Neurosci 2023; 16:1225847. [PMID: 37664240 PMCID: PMC10470653 DOI: 10.3389/fnmol.2023.1225847] [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: 05/19/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
A challenge for central nervous system (CNS) tissue analysis in neuroscience research has been the difficulty to codetect and colocalize gene and protein expression in the same tissue. Given the importance of identifying gene expression relative to proteins of interest, for example, cell-type specific markers, we aimed to develop a protocol to optimize their codetection. RNAscope fluorescent in situ hybridization (FISH) combined with immunohistochemistry (IHC) in fixed (CNS) tissue sections allows for reliable quantification of gene transcripts of interest within IHC-labeled cells. This paper describes a new method for simultaneous visualization of FISH and IHC in thicker (14-μm), fixed tissue samples, using spinal cord sections. This method's effectiveness is shown by the cell-type-specific quantification of two genes, namely the proinflammatory cytokine interleukin-1beta (IL-1b) and the inflammasome NLR family pyrin domain containing 3 (NLRP3). These genes are challenging to measure accurately using immunohistochemistry (IHC) due to the nonspecificity of available antibodies and the hard-to-distinguish, dot-like visualizations of the labeled proteins within the tissue. These measurements were carried out in spinal cord sections after unilateral chronic constriction injury of the sciatic nerve to induce neuroinflammation in the spinal cord. RNAscope is used to label transcripts of genes of interest and IHC is used to label cell-type specific antigens (IBA1 for microglia, NeuN for neurons). This combination allowed for labeled RNA transcripts to be quantified within cell-type specific boundaries using confocal microscopy and standard image analysis methods. This method makes it easy to answer empirical questions that are intractable with standard IHC or in situ hybridization alone. The method, which has been optimized for spinal cord tissue and to minimize tissue preparation time and costs, is described in detail from tissue collection to image analysis. Further, the relative expression changes in inflammatory genes NLRP3 and IL-1b in spinal cord microglia vs. neurons of somatotopically relevant laminae are described for the first time.
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Affiliation(s)
- Jayson B. Ball
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Connor J. McNulty
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Suzanne M. Green-Fulgham
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Joseph M. Dragavon
- Advanced Light Microscopy Core, Biofrontiers Institute, University of Colorado Boulder, Boulder, CO, United States
| | - Igor R. Correia Rocha
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Maggie R. Finch
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Emily D. Prévost
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Imaad I. Siddique
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Brodie J. Woodall
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Linda R. Watkins
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Michael V. Baratta
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - David H. Root
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO, United States
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131
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Dong G, Li H, Gao H, Chen Y, Yang H. Global Trends and Hotspots on Microglia Associated with Pain from 2002 to 2022: A Bibliometric Analysis. J Pain Res 2023; 16:2817-2834. [PMID: 37600079 PMCID: PMC10439805 DOI: 10.2147/jpr.s413028] [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: 04/11/2023] [Accepted: 07/28/2023] [Indexed: 08/22/2023] Open
Abstract
Background Researchers have made significant progress in microglia associated with pain in recent years. However, more relevant bibliometric analyses are still needed on trends and directions in this field. The aim of this study is to provide a comprehensive perspective and to predict future directions of pain-related microglia research via bibliometric tools. Methods English articles and reviews related with pain and microglia were extracted from the Web of Science core collection (WosCC) database between 2002 to 2022. Bibliometric tools such as VOSviewer, CiteSpace, and Bibliometrix R package were used to analyze publication characteristics, countries, authors, institutions, journals, research hotspots, and trend topics. Results A total of 2761 articles were included in this analysis. Research on microglia associated with pain has increased significantly over the last two decades. China (n = 1020, 36.94%) and the United States (n = 751, 27.20%) contributed the most in terms of publications and citations, respectively. Kyushu University published the most articles in this field compared to other institutions, and Professor Inoue Kazuhide (n = 54) at this university made outstanding contributions in this field. Molecular Pain (n = 113) was the journal with the most publication, while Journal of Neuroscience had the highest number of citations. According to the authors keywords analysis, the research in this area can be summarized into 7 clusters such as "microglia activation pathways", "pain treatment research", "mental symptoms of chronic pain", and so on. Conclusion This study provides a comprehensive analysis of pain-related microglia research in the past two decades. We identified the countries, institutions, scholars, and journals with the highest number of publications and the most influence in the field, and the research trends identified in this paper may provide new insights for future research.
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Affiliation(s)
- Guoqi Dong
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China
| | - Hui Li
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China
| | - Hui Gao
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China
| | - Yingqi Chen
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China
| | - Huayuan Yang
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People’s Republic of China
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132
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Du J, Cheng N, Deng Y, Xiang P, Liang J, Zhang Z, Hei Z, Li X. Astrocyte senescence-like response related to peripheral nerve injury-induced neuropathic pain. Cell Mol Biol Lett 2023; 28:65. [PMID: 37582709 PMCID: PMC10428597 DOI: 10.1186/s11658-023-00474-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/28/2023] [Indexed: 08/17/2023] Open
Abstract
BACKGROUND Peripheral nerve damage causes neuroinflammation, which plays a critical role in establishing and maintaining neuropathic pain (NeP). The mechanisms contributing to neuroinflammation remain poorly elucidated, and pharmacological strategies for NeP are limited. Thus, in this study, we planned to explore the possible link between astrocyte senescence and NeP disorders following chronic sciatic nerve injury. METHODS An NeP animal model was established by inducing chronic constrictive injury (CCI) to the sciatic nerve in adult rats. A senolytic drug combination of dasatinib and quercetin was gavaged daily from the first postoperative day until the end of the study. Paw mechanical withdrawal threshold (PMWT) and paw thermal withdrawal latency (PTWL) were evaluated to assess behaviors in response to pain in the experimental rats. Senescence-associated β-galactosidase staining, western blot analysis, and immunofluorescence were applied to examine the levels of proinflammatory factors and severity of the senescence-like response in the spinal cord. Lipopolysaccharide (LPS) was administered to induce senescence of spinal astrocytes in primary cultures in vitro, to explore the potential impacts of senescence on the secretion of proinflammatory factors. Furthermore, single-cell RNA sequencing (scRNA-seq) was conducted to identify senescence-related molecular responses in spinal astrocytes under neuropathic pain. RESULTS Following sciatic nerve CCI, rats exhibited reduced PMWT and PTWL, increased levels of spinal proinflammatory factors, and an enhanced degree of senescence in spinal astrocytes. Treatment with dasatinib and quercetin effectively attenuated spinal neuroinflammation and mitigated the hypersensitivities of the rats subjected to sciatic nerve CCI. Mechanistically, the dasatinib-quercetin combination reversed senescence in LPS-stimulated primary cultured astrocytes and decreased the levels of proinflammatory factors. The scRNA-seq data revealed four potential senescence-related genes in the spinal astrocyte population, and the expression of clusterin (CLU) protein was validated via in vitro experiments. CONCLUSION The findings indicate the potential role of astrocyte senescence in neuroinflammation following peripheral nerve injury, and suggest that targeting CLU activation in astrocytes might provide a novel therapeutic strategy to treat NeP.
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Affiliation(s)
- Jingyi Du
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China
| | - Nan Cheng
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China
| | - Yifan Deng
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China
| | - Ping Xiang
- Department of Medical Quality Management, Nanfang Hospital, Southern Medical University, Guangzhou, 510000, China
| | - Jianfen Liang
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China
| | - Zhenye Zhang
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China
| | - Ziqing Hei
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China
| | - Xiang Li
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, China.
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Cramer N, Ji Y, Kane M, Pilli N, Posa L, Patten GV, Masri R, Keller A. Elevated serotonin in mouse spinal dorsal horn is pronociceptive. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.10.552838. [PMID: 37645759 PMCID: PMC10461991 DOI: 10.1101/2023.08.10.552838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Serotonergic neurons in the rostral ventral medulla (RVM) contribute to bidirectional control of pain through modulation of spinal and trigeminal nociceptive networks. Deficits in this pathway are believed to contribute to pathological pain states, but whether changes in serotonergic mechanisms are pro or anti-nociceptive are debated. We used a combination of optogenetics and fiber photometry to examine these mechanisms more closely. We find that optogenetic activation of RVM serotonergic afferents in the spinal cord of naïve mice produces mechanical hypersensitivity and conditioned place aversion. Neuropathic pain, produced by chronic constriction injury of the infraorbital nerve (CCI-ION), evoked a tonic increase in serotonin concentrations within the spinal trigeminal nucleus caudalis (SpVc), measured with liquid chromatography-tandem mass spectroscopy (LC-MS/MS). By contract, CCI-ION had no effect on the phasic serotonin transients in SpVc, evoked by noxious pinch, and measured with fiber photometry of a serotonin sensor. These findings suggest that serotonin release in the spinal cord is pronociceptive and that an increase is sustained serotonin signaling, rather than phasic or event driven increases, potentiate nociception in models of chronic pain.
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Affiliation(s)
- Nathan Cramer
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201
- UM-MIND, University of Maryland School of Medicine, Baltimore, Maryland 21201
- Center to Advance Chronic Pain Research, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Yadong Ji
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201
| | - Maureen Kane
- Department of Pharmaceutical Sciences University of Maryland School of Pharmacy, Baltimore, Maryland 21201
| | - Nageswara Pilli
- Department of Pharmaceutical Sciences University of Maryland School of Pharmacy, Baltimore, Maryland 21201
| | - Luca Posa
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Gabrielle Van Patten
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Radi Masri
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland 21201
- UM-MIND, University of Maryland School of Medicine, Baltimore, Maryland 21201
- Center to Advance Chronic Pain Research, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Asaf Keller
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201
- UM-MIND, University of Maryland School of Medicine, Baltimore, Maryland 21201
- Center to Advance Chronic Pain Research, University of Maryland School of Medicine, Baltimore, Maryland 21201
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Barcelon E, Chung S, Lee J, Lee SJ. Sexual Dimorphism in the Mechanism of Pain Central Sensitization. Cells 2023; 12:2028. [PMID: 37626838 PMCID: PMC10453375 DOI: 10.3390/cells12162028] [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: 06/15/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
It has long been recognized that men and women have different degrees of susceptibility to chronic pain. Greater recognition of the sexual dimorphism in chronic pain has resulted in increasing numbers of both clinical and preclinical studies that have identified factors and mechanisms underlying sex differences in pain sensitization. Here, we review sexually dimorphic pain phenotypes in various research animal models and factors involved in the sex difference in pain phenotypes. We further discuss putative mechanisms for the sexual dimorphism in pain sensitization, which involves sex hormones, spinal cord microglia, and peripheral immune cells. Elucidating the sexually dimorphic mechanism of pain sensitization may provide important clinical implications and aid the development of sex-specific therapeutic strategies to treat chronic pain.
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Affiliation(s)
- Ellane Barcelon
- Department of Physiology and Neuroscience, School of Dentistry, Dental Research Institute, Seoul National University, Seoul 08826, Republic of Korea; (E.B.); (S.C.); (J.L.)
| | - Seohyun Chung
- Department of Physiology and Neuroscience, School of Dentistry, Dental Research Institute, Seoul National University, Seoul 08826, Republic of Korea; (E.B.); (S.C.); (J.L.)
| | - Jaesung Lee
- Department of Physiology and Neuroscience, School of Dentistry, Dental Research Institute, Seoul National University, Seoul 08826, Republic of Korea; (E.B.); (S.C.); (J.L.)
- Department of Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Joong Lee
- Department of Physiology and Neuroscience, School of Dentistry, Dental Research Institute, Seoul National University, Seoul 08826, Republic of Korea; (E.B.); (S.C.); (J.L.)
- Department of Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
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135
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Zhang X, Gao R, Zhang C, Teng Y, Chen H, Li Q, Liu C, Wu J, Wei L, Deng L, Wu L, Ye-Lehmann S, Mao X, Liu J, Zhu T, Chen C. Extracellular RNAs-TLR3 signaling contributes to cognitive impairment after chronic neuropathic pain in mice. Signal Transduct Target Ther 2023; 8:292. [PMID: 37544956 PMCID: PMC10404588 DOI: 10.1038/s41392-023-01543-z] [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: 08/03/2022] [Revised: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 08/08/2023] Open
Abstract
Chronic pain is often associated with cognitive decline, which could influence the quality of the patient's life. Recent studies have suggested that Toll-like receptor 3 (TLR3) is crucial for memory and learning. Nonetheless, the contribution of TLR3 to the pathogenesis of cognitive decline after chronic pain remains unclear. The level of TLR3 in hippocampal neurons increased in the chronic constriction injury (CCI) group than in the sham group in this study. Importantly, compared to the wild-type (WT) mice, TLR3 knockout (KO) mice and TLR3-specific neuronal knockdown mice both displayed improved cognitive function, reduced levels of inflammatory cytokines and neuronal apoptosis and attenuated injury to hippocampal neuroplasticity. Notably, extracellular RNAs (exRNAs), specifically double-stranded RNAs (dsRNAs), were increased in the sciatic nerve, serum, and hippocampus after CCI. The co-localization of dsRNA with TLR3 was also increased in hippocampal neurons. And the administration of poly (I:C), a dsRNA analog, elevated the levels of dsRNAs and TLR3 in the hippocampus, exacerbating hippocampus-dependent memory. In additon, the dsRNA/TLR3 inhibitor improved cognitive function after CCI. Together, our findings suggested that exRNAs, particularly dsRNAs, that were present in the condition of chronic neuropathic pain, activated TLR3, initiated downstream inflammatory and apoptotic signaling, caused damage to synaptic plasticity, and contributed to the etiology of cognitive impairment after chronic neuropathic pain.
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Affiliation(s)
- Xueying Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Gao
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Changteng Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Teng
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Hai Chen
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Li
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Changliang Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Jiahui Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Liuxing Wei
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Liyun Deng
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Lining Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Shixin Ye-Lehmann
- Diseases and Hormones of the Nervous System, University of Paris-Scalay Bicêtre Hosptial, Le Kremlin-Bicêtre, France
| | - Xiaobo Mao
- Department of Neurology, Institute of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, USA
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China.
| | - Chan Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China.
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Ma X, Miraucourt LS, Qiu H, Sharif-Naeini R, Khadra A. Modulation of SK Channels via Calcium Buffering Tunes Intrinsic Excitability of Parvalbumin Interneurons in Neuropathic Pain: A Computational and Experimental Investigation. J Neurosci 2023; 43:5608-5622. [PMID: 37451982 PMCID: PMC10401647 DOI: 10.1523/jneurosci.0426-23.2023] [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: 03/07/2023] [Revised: 05/11/2023] [Accepted: 05/18/2023] [Indexed: 07/18/2023] Open
Abstract
Parvalbumin-expressing interneurons (PVINs) play a crucial role within the dorsal horn of the spinal cord by preventing touch inputs from activating pain circuits. In both male and female mice, nerve injury decreases PVINs' output via mechanisms that are not fully understood. In this study, we show that PVINs from nerve-injured male mice change their firing pattern from tonic to adaptive. To examine the ionic mechanisms responsible for this decreased output, we used a reparametrized Hodgkin-Huxley type model of PVINs, which predicted (1) the firing pattern transition is because of an increased contribution of small conductance calcium-activated potassium (SK) channels, enabled by (2) impairment in intracellular calcium buffering systems. Analyzing the dynamics of the Hodgkin-Huxley type model further demonstrated that a generalized Hopf bifurcation differentiates the two types of state transitions observed in the transient firing of PVINs. Importantly, this predicted mechanism holds true when we embed the PVIN model within the neuronal circuit model of the spinal dorsal horn. To experimentally validate this hypothesized mechanism, we used pharmacological modulators of SK channels and demonstrated that (1) tonic firing PVINs from naive male mice become adaptive when exposed to an SK channel activator, and (2) adapting PVINs from nerve-injured male mice return to tonic firing on SK channel blockade. Our work provides important insights into the cellular mechanism underlying the decreased output of PVINs in the spinal dorsal horn after nerve injury and highlights potential pharmacological targets for new and effective treatment approaches to neuropathic pain.SIGNIFICANCE STATEMENT Parvalbumin-expressing interneurons (PVINs) exert crucial inhibitory control over Aβ fiber-mediated nociceptive pathways at the spinal dorsal horn. The loss of their inhibitory tone leads to neuropathic symptoms, such as mechanical allodynia, via mechanisms that are not fully understood. This study identifies the reduced intrinsic excitability of PVINs as a potential cause for their decreased inhibitory output in nerve-injured condition. Combining computational and experimental approaches, we predict a calcium-dependent mechanism that modulates PVINs' electrical activity following nerve injury: a depletion of cytosolic calcium buffer allows for the rapid accumulation of intracellular calcium through the active membranes, which in turn potentiates SK channels and impedes spike generation. Our results therefore pinpoint SK channels as potential therapeutic targets for treating neuropathic symptoms.
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Affiliation(s)
- Xinyue Ma
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Loïs S Miraucourt
- Alan Edwards Center for Research on Pain, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Haoyi Qiu
- Alan Edwards Center for Research on Pain, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Reza Sharif-Naeini
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Anmar Khadra
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Department of Physiology, McGill University, Montreal, Quebec H3G 1Y6, Canada
- Department of Quantitative Life Sciences, McGill University, Montreal, Quebec H3G 1Y6, Canada
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137
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Smith JA, Ji Y, Lorsung R, Breault MS, Koenig J, Cramer N, Masri R, Keller A. Parabrachial Nucleus Activity in Nociception and Pain in Awake Mice. J Neurosci 2023; 43:5656-5667. [PMID: 37451980 PMCID: PMC10401640 DOI: 10.1523/jneurosci.0587-23.2023] [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: 03/29/2023] [Revised: 07/03/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023] Open
Abstract
The parabrachial nuclear complex (PBN) is a nexus for aversion and for the sensory and affective components of pain perception. We have previously shown that during chronic pain PBN neurons in anesthetized rodents have amplified activity. We report a method to record from PBN neurons of behaving, head-restrained mice while applying reproducible noxious stimuli. We find that both spontaneous and evoked activity are higher in awake animals compared with urethane anesthetized mice. Fiber photometry of calcium responses from calcitonin-gene-related peptide-expressing PBN neurons demonstrates that these neurons respond to noxious stimuli. In both males and females with neuropathic or inflammatory pain, responses of PBN neurons remain amplified for at least 5 weeks, in parallel with increased pain metrics. We also show that PBN neurons can be rapidly conditioned to respond to innocuous stimuli after pairing with noxious stimuli. Finally, we demonstrate that changes in PBN neuronal activity are correlated with changes in arousal, measured as changes in pupil area.SIGNIFICANCE STATEMENT The parabrachial complex is a nexus of aversion, including pain. We report a method to record from parabrachial nucleus neurons of behaving mice while applying reproducible noxious stimuli. This allowed us to track parabrachial activity over time in animals with neuropathic or inflammatory pain. It also allowed us to show that the activity of these neurons correlates with arousal states and that these neurons can be conditioned to respond to innocuous stimuli.
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Affiliation(s)
- Jesse A Smith
- Program in Neuroscience, Department of Neurobiology, School of Medicine, University of Maryland, Baltimore, Maryland 21201
| | - Yadong Ji
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, Maryland 21201-1786
| | - Rebecca Lorsung
- Program in Neuroscience, Department of Neurobiology, School of Medicine, University of Maryland, Baltimore, Maryland 21201
| | - Macauley S Breault
- Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Jeffrey Koenig
- Program in Molecular Medicine, Department of Neurobiology, School of Medicine, University of Maryland, Baltimore, Maryland 21201
| | - Nathan Cramer
- Program in Neuroscience, Department of Neurobiology, School of Medicine, University of Maryland, Baltimore, Maryland 21201
| | - Radi Masri
- Program in Neuroscience, Department of Neurobiology, School of Medicine, University of Maryland, Baltimore, Maryland 21201
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, Maryland 21201-1786
| | - Asaf Keller
- Program in Neuroscience, Department of Neurobiology, School of Medicine, University of Maryland, Baltimore, Maryland 21201
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138
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Negah SS, Hajinejad M, Nemati S, Roudbary SMJM, Forouzanfar F. Stem cell therapy combined with luteolin alleviates experimental neuropathy. Metab Brain Dis 2023; 38:1895-1903. [PMID: 37014525 DOI: 10.1007/s11011-023-01206-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/22/2023] [Indexed: 04/05/2023]
Abstract
Neuropathic pain is a chronic condition that causes long-term burning sensations. Despite significant efforts, current treatments for neuropathic pain are ineffective in curing the condition, which means new therapeutic options must be developed. One such option is the use of stem cell therapy in combination with anti-inflammatory herbal components, which has shown promise in treating neuropathic pain. The study aimed to investigate the effects of bone marrow mesenchymal stem cells (BM-MSCs) with luteolin on sensory deficits and pathological changes in a neuropathic model. The results showed that luteolin, either alone or in combination with BM-MSCs, effectively reduced sensory deficits related to mechanical and thermal hypersensitivity. In addition, luteolin alone and combined with BM-MSCs reduced oxidative stress in neuropathic rats and inhibited cellular responses, particularly reactive astrocytes. The study concluded that combining luteolin and BM-MSCs may offer an effective therapeutic strategy for patients with neuropathic pain, although further research is needed.
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Affiliation(s)
- Sajad Sahab Negah
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehrdad Hajinejad
- Shefa Neuroscience Research Center, Khatam Alanbia Hospital, Tehran, Iran
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Saeideh Nemati
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Fatemeh Forouzanfar
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
- Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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139
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Zajączkowska R, Pawlik K, Ciapała K, Piotrowska A, Ciechanowska A, Rojewska E, Kocot-Kępska M, Makuch W, Wordliczek J, Mika J. Mirogabalin Decreases Pain-like Behaviors by Inhibiting the Microglial/Macrophage Activation, p38MAPK Signaling, and Pronociceptive CCL2 and CCL5 Release in a Mouse Model of Neuropathic Pain. Pharmaceuticals (Basel) 2023; 16:1023. [PMID: 37513935 PMCID: PMC10384153 DOI: 10.3390/ph16071023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Neuropathic pain is a chronic condition that significantly reduces the quality of life of many patients as a result of ineffective pain relief therapy. For that reason, looking for new analgesics remains an important issue. Mirogabalin is a new gabapentinoid that is a specific ligand for the α2σ-1 and α2σ-2 subunits of voltage-gated calcium channels. In the present study, we compared the analgesic effect of pregabalin and mirogabalin in a neuropathic pain chronic constriction injury (CCI) of the sciatic nerve in a mouse model. The main purpose of our study was to determine the effectiveness of mirogabalin administered both once and repeatedly and to explain how the drug influences highly activated cells at the spinal cord level in neuropathy. We also sought to understand whether mirogabalin modulates the selected intracellular pathways (p38MAPK, ERK, JNK) and chemokines (CCL2, CCL5) important for nociceptive transmission, which is crucial information from a clinical perspective. First, our study provides evidence that a single mirogabalin administration diminishes tactile hypersensitivity more effectively than pregabalin. Second, research shows that several indirect mechanisms may be responsible for the beneficial analgesic effect of mirogabalin. This study reports that repeated intraperitoneally (i.p.) mirogabalin administration strongly prevents spinal microglia/macrophage activation evoked by nerve injury, slightly suppresses astroglia and neutrophil infiltration, and reduces the p38MAPK levels associated with neuropathic pain, as measured on Day 7. Moreover, mirogabalin strongly diminished the levels of the pronociceptive chemokines CCL2 and CCL5. Our results indicate that mirogabalin may represent a new strategy for the effective pharmacotherapy of neuropathic pain.
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Affiliation(s)
- Renata Zajączkowska
- Department of Interdisciplinary Intensive Care, Jagiellonian University Medical College, 30-688 Krakow, Poland
| | - Katarzyna Pawlik
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Katarzyna Ciapała
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Anna Piotrowska
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Agata Ciechanowska
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Ewelina Rojewska
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Magdalena Kocot-Kępska
- Department of Pain Research and Treatment, Jagiellonian University Medical College, 31-501 Krakow, Poland
| | - Wioletta Makuch
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Jerzy Wordliczek
- Department of Interdisciplinary Intensive Care, Jagiellonian University Medical College, 30-688 Krakow, Poland
| | - Joanna Mika
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland
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140
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Macêdo-Souza C, Maisonnette SS, Hallak JE, Crippa JA, Zuardi AW, Landeira-Fernandez J, Leite-Panissi CRA. Systemic Chronic Treatment with Cannabidiol in Carioca High- and Low-Conditioned Freezing Rats in the Neuropathic Pain Model: Evaluation of Pain Sensitivity. Pharmaceuticals (Basel) 2023; 16:1003. [PMID: 37513915 PMCID: PMC10383663 DOI: 10.3390/ph16071003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/06/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Studies have shown high comorbidity of anxiety disorder and chronic pain; generalized anxiety disorder (GAD) and neuropathic pain are among these pathologies. Cannabidiol (CBD) has been considered a promising treatment for these conditions. This study investigated whether chronic systemic treatment with CBD alters pain in high- (CHF) and low-freezing (CLF) Carioca rats (GAD model) and control rats (CTL) submitted to chronic neuropathic pain. The rats were evaluated in the sensory aspects (von Frey, acetone, and hot plate tests) before the chronic constriction injury of the ischiatic nerve (CCI) or not (SHAM) and on days 13 and 23 after surgery. Chronic treatment with CBD (5 mg/kg daily) was used for ten days, starting the 14th day after surgery. The open field test on the 22nd also evaluated locomotion and anxiety-like behavior. CBD treatment had an anti-allodynic effect on the mechanical and thermal threshold in all lineages; however, these effects were lower in the CHF and CLF lineages. Considering emotional evaluation, we observed an anxiolytic effect in CTL+CCI and CHF+CCI after CBD treatment and increased mobility in CLF+SHAM rats. These results suggest that the CBD mechanical anti-allodynic and emotional effects can depend on anxiety level.
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Affiliation(s)
- Carolina Macêdo-Souza
- Department of Psychology, Faculty of Philosophy, Science and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
- National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo 14049-900, Brazil
| | - Silvia Soares Maisonnette
- Department of Psychology, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil
| | - Jaime E Hallak
- National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo 14049-900, Brazil
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto 14049-900, Brazil
| | - José A Crippa
- National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo 14049-900, Brazil
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto 14049-900, Brazil
| | - Antônio W Zuardi
- National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo 14049-900, Brazil
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto 14049-900, Brazil
| | - J Landeira-Fernandez
- Department of Psychology, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil
| | - Christie Ramos Andrade Leite-Panissi
- Department of Psychology, Faculty of Philosophy, Science and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
- National Institute for Translational Medicine (INCT-TM; CNPq), São Paulo 14049-900, Brazil
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141
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Wen Z, Pramanik A, Lewicki SA, Jung YH, Gao ZG, Randle JCR, Cronin C, Chen Z, Giancotti LA, Whitehead GS, Liang BT, Breton S, Salvemini D, Cook DN, Jacobson KA. Alicyclic Ring Size Variation of 4-Phenyl-2-naphthoic Acid Derivatives as P2Y 14 Receptor Antagonists. J Med Chem 2023; 66:9076-9094. [PMID: 37382926 PMCID: PMC10407959 DOI: 10.1021/acs.jmedchem.3c00664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
P2Y14 receptor (P2Y14R) is activated by extracellular UDP-glucose, a damage-associated molecular pattern that promotes inflammation in the kidney, lung, fat tissue, and elsewhere. Thus, selective P2Y14R antagonists are potentially useful for inflammatory and metabolic diseases. The piperidine ring size of potent, competitive P2Y14R antagonist (4-phenyl-2-naphthoic acid derivative) PPTN 1 was varied from 4- to 8-membered rings, with bridging/functional substitution. Conformationally and sterically modified isosteres included N-containing spirocyclic (6-9), fused (11-13), and bridged (14, 15) or large (16-20) ring systems, either saturated or containing alkene or hydroxy/methoxy groups. The alicyclic amines displayed structural preference. An α-hydroxyl group increased the affinity of 4-(4-((1R,5S,6r)-6-hydroxy-3-azabicyclo[3.1.1]heptan-6-yl)phenyl)-7-(4-(trifluoromethyl)phenyl)-2-naphthoic acid 15 (MRS4833) compared to 14 by 89-fold. 15 but not its double prodrug 50 reduced airway eosinophilia in a protease-mediated asthma model, and orally administered 15 and prodrugs reversed chronic neuropathic pain (mouse CCI model). Thus, we identified novel drug leads having in vivo efficacy.
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Affiliation(s)
- Zhiwei Wen
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Asmita Pramanik
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Sarah A Lewicki
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Young-Hwan Jung
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Zhan-Guo Gao
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - John C R Randle
- Random Walk Ventures, LLC, 108 Lincoln Street Unit 6B, Boston, Massachusetts 02111, United States
| | - Chunxia Cronin
- Pat and Jim Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
| | - Zhoumou Chen
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd., St. Louis, Missouri 63104, United States
| | - Luigino A Giancotti
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd., St. Louis, Missouri 63104, United States
| | - Gregory S Whitehead
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, United States
| | - Bruce T Liang
- Pat and Jim Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
| | - Sylvie Breton
- Centre de Recherche du CHU de Québec, Département d'Obstétrique, de Gynécologie et Reproduction, Faculté de Médecine, Université Laval, Laval, Québec G1V 4G2, Canada
| | - Daniela Salvemini
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd., St. Louis, Missouri 63104, United States
| | - Donald N Cook
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, United States
| | - Kenneth A Jacobson
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
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142
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Cui H, Guo Z, Guo Z, Fan Z, Shen N, Qi X, Ma Y, Zhu Y, Wu X, Chen B, Xiang H. TMEM100 Regulates Neuropathic Pain by Reducing the Expression of Inflammatory Factors. Mediators Inflamm 2023; 2023:9151967. [PMID: 37469758 PMCID: PMC10352538 DOI: 10.1155/2023/9151967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/12/2022] [Accepted: 06/13/2023] [Indexed: 07/21/2023] Open
Abstract
There is no effective treatment for peripheral nerve injury-induced chronic neuropathic pain (NP), which profoundly impacts the quality of life of those affected. Transmembraneprotein100 (TMEM100) is considered to be a pain regulatory protein and is expressed in the dorsal root ganglion (DRG) of rats. However, the mechanism of pain regulation and the expression of TMEM100 following various peripheral nerve injuries are unclear. In this study, we constructed two pain models of peripheral nerve injury: tibial nerve injury (TNI) and chronic constriction injury (CCI). This study found that the Paw Withdrawal Mechanical Threshold (PWMT) and Paw Withdraw Thermal Latency (PWTL) of the rats in the two pain models decreased significantly, and the expression of TMEM100 in the DRG of two groups also decreased significantly. Furthermore, the decrease in the CCI group was more obvious than in the TNI group. There was no significant statistical significance (P > 0.05). We constructed an adeno-associated virus 6 (AAV6) vector expressing recombinant fluorescent TMEM100 protein and injected it into the sciatic nerve (SN) of two pain models: CCI and TNI. PWMT and PWTL were significantly increased in the two groups, along with the expression of TMEM100 in the spinal cord and DRG. It also significantly inhibited the activation of microglia, astrocytes, and several inflammatory mediators (TNF- α, IL-1 β, and IL-6). In summary, the results of this study suggested that TMEM100 might be a promising molecular strategy for the treatment of NP, and its anti-inflammatory effects might play an important role in pain relief.
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Affiliation(s)
- Huifei Cui
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Zhaoyang Guo
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
- Department of Orthopedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Zhu Guo
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Zuoran Fan
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Nana Shen
- Department of Rehabilitation, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiaoying Qi
- Department of Gynecology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yuanye Ma
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Youfu Zhu
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Xiaolin Wu
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Bohua Chen
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Hongfei Xiang
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
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143
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Li L, Ru Q, Lu Y, Fang X, Chen G, Saifullah AB, Yao C, Tolias KF. Tiam1 coordinates synaptic structural and functional plasticity underpinning the pathophysiology of neuropathic pain. Neuron 2023; 111:2038-2050.e6. [PMID: 37146610 PMCID: PMC10330505 DOI: 10.1016/j.neuron.2023.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 09/27/2022] [Accepted: 04/10/2023] [Indexed: 05/07/2023]
Abstract
Neuropathic pain is a common, debilitating chronic pain condition caused by damage or a disease affecting the somatosensory nervous system. Understanding the pathophysiological mechanisms underlying neuropathic pain is critical for developing new therapeutic strategies to treat chronic pain effectively. Tiam1 is a Rac1 guanine nucleotide exchange factor (GEF) that promotes dendritic and synaptic growth during hippocampal development by inducing actin cytoskeletal remodeling. Here, using multiple neuropathic pain animal models, we show that Tiam1 coordinates synaptic structural and functional plasticity in the spinal dorsal horn via actin cytoskeleton reorganization and synaptic NMDAR stabilization and that these actions are essential for the initiation, transition, and maintenance of neuropathic pain. Furthermore, an antisense oligonucleotides (ASO) targeting spinal Tiam1 persistently alleviate neuropathic pain sensitivity. Our findings suggest that Tiam1-coordinated synaptic functional and structural plasticity underlies the pathophysiology of neuropathic pain and that intervention of Tiam1-mediated maladaptive synaptic plasticity has long-lasting consequences in neuropathic pain management.
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Affiliation(s)
- Lingyong Li
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, AL 35025, USA; Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Qin Ru
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA; Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan 430056, China
| | - Yungang Lu
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA; Department of Pain Medicine, Anesthesiology, Critical Care and Pain Medicine Division, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xing Fang
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - Guanxing Chen
- Department of Pain Medicine, Anesthesiology, Critical Care and Pain Medicine Division, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ali Bin Saifullah
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - Changqun Yao
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, AL 35025, USA
| | - Kimberley F Tolias
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA; Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
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da Silva LS, Toledo RS, Stein DJ, de Castro JM, Caumo W, Torres ILS. Transcranial Direct Current Stimulation (tDCS) antinociceptive effect is not altered by isoflurane anesthesia in neuropathic pain rats. BRAZILIAN JOURNAL OF ANESTHESIOLOGY (ELSEVIER) 2023; 73:514-518. [PMID: 36924939 PMCID: PMC10362433 DOI: 10.1016/j.bjane.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Affiliation(s)
- Lisiane Santos da Silva
- Hospital de Clínicas de Porto Alegre, Laboratório de Farmacologia e Neuromodulação da Dor: Investigações Pré-clínicas, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Programa de Pós-Graduação em Medicina: Ciências Médicas, Porto Alegre, RS, Brazil
| | - Roberta Ströher Toledo
- Hospital de Clínicas de Porto Alegre, Laboratório de Farmacologia e Neuromodulação da Dor: Investigações Pré-clínicas, Porto Alegre, RS, Brazil
| | - Dirson João Stein
- Hospital de Clínicas de Porto Alegre, Laboratório de Farmacologia e Neuromodulação da Dor: Investigações Pré-clínicas, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Programa de Pós-Graduação em Medicina: Ciências Médicas, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre, Núcleo Translacional: Farmacologia da Dor e Neuromodulação, Porto Alegre, RS, Brazil
| | - Josimar Macedo de Castro
- Hospital de Clínicas de Porto Alegre, Laboratório de Farmacologia e Neuromodulação da Dor: Investigações Pré-clínicas, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Programa de Pós-Graduação em Medicina: Ciências Médicas, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre, Núcleo Translacional: Farmacologia da Dor e Neuromodulação, Porto Alegre, RS, Brazil
| | - Wolnei Caumo
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Programa de Pós-Graduação em Medicina: Ciências Médicas, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre, Núcleo Translacional: Farmacologia da Dor e Neuromodulação, Porto Alegre, RS, Brazil
| | - Iraci L S Torres
- Hospital de Clínicas de Porto Alegre, Laboratório de Farmacologia e Neuromodulação da Dor: Investigações Pré-clínicas, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Programa de Pós-Graduação em Medicina: Ciências Médicas, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre, Núcleo Translacional: Farmacologia da Dor e Neuromodulação, Porto Alegre, RS, Brazil.
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Mou C, Li Z, Liu N, Ni L, Xu Y. Low level TGF-β1-treated Umbilical mesenchymal stem cells attenuates microgliosis and neuropathic pain in chronic constriction injury by exosomes/lncRNA UCA1/miR-96-5p/FOXO3a. Biochem Biophys Rep 2023; 34:101477. [PMID: 37153860 PMCID: PMC10160346 DOI: 10.1016/j.bbrep.2023.101477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 04/19/2023] [Accepted: 04/21/2023] [Indexed: 05/10/2023] Open
Abstract
Neuropathic pain is a chronic pain state that usually caused by injuries in peripheral or central nerve. Inhibition of spinal microglial response is a promising treatment of neuropathic pain caused by peripheral nerve injury. In recent years, mesenchymal stem cells (MSCs) that characterized with multipotent ability have been widely studied for disease treatment. TGF-β1 is a well-known regulatory cytokine that participate in the response to cell stress and is closely correlated with the function of nerve system as well as MSC differentiation. This work aimed to determine the effects of exosomes that extracted from TGF-β1-induced umbilical mesenchymal stem cells (hUCSMCs) on the neuropathic pain. In this work, we established a rat model of chronic constriction injury (CCI) of the sciatic nerve and LPS-induced microglia cell model. The hUCSMCs cell surface biomarker was identified by flow cytometry. Exosomes that extracted from TGF-β1-treated hUCSMCs were characterized by transmission electron microscopy (TEM) and nanoparticle tracking analysis (NTA) and used for treatment. We observed that TGF-β1 upregulates the level of lncRNA UCA1 (UCA1) in hUCMSC-derived exosomes. Treatment with exosomal lncRNA UCA1 (UCA1) alleviated the neuropathic pain, microgliosis, and production of inflammatory mediator both in vivo and in vitro. UCA1 directly interact with the miR-96-5p, and the miR-96-5p acts as sponge of FOXO3a. Knockdown of UCA1 upregulated the level of miR-96-5p and downregulated the FOXO3a expression, which could be recovered by inhibition of miR-96-5p. In summary, the TGF-β1-stimulated exosomal UCA1 from hUCMSCs alleviates the neuropathic pain and microgliosis. These findings may provide novel evidence for treatment of neuropathic pain caused by chronic constriction injury.
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Affiliation(s)
- Chunlin Mou
- Technology Department, Everunion Biotechnology Co. LTD, Tianjin, China
| | - Zhengnan Li
- Technology Department, Everunion Biotechnology Co. LTD, Tianjin, China
| | - Nian Liu
- Technology Department, Everunion Biotechnology Co. LTD, Tianjin, China
| | - Ling Ni
- Technology Department, Everunion Biotechnology Co. LTD, Tianjin, China
| | - YongSheng Xu
- Technology Department, Everunion Biotechnology Co. LTD, Tianjin, China
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146
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Clements MA, Kwilasz AJ, Litwiler ST, Sents Z, Woodall BJ, Hayashida K, Watkins LR. Intrathecal non-viral interleukin-10 gene therapy ameliorates neuropathic pain as measured by both classical static allodynia and a novel supra-spinally mediated pain assay, the Two-Arm Rodent Somatosensory (TARS) task. Brain Behav Immun 2023; 111:177-185. [PMID: 37037361 PMCID: PMC10330316 DOI: 10.1016/j.bbi.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 04/12/2023] Open
Abstract
Intrathecal delivery of interleukin-10 (IL-10) gene therapy has been reported to be effective in suppressing pain enhancement in a variety of rodent models. However, all publications that have tested this treatment have relied upon measures of static allodynia (von Frey test) and thermal hyperalgesia (Hargreaves test). As this plasmid DNA IL-10 (pDNA-IL10) therapeutic approach is now in human clinical trials for multiple pain indications, including intrathecal delivery for human neuropathic pain, it is important to consider the recent concerns raised in the pain field that such tests reflect spinal rather than supraspinal processing of, and responsivity to, noxious stimuli. Consequently, this raises the question of whether intrathecal pDNA-IL10 can reverse established neuropathic pain when assessed by a test requiring supraspinal, rather than solely spinal, mediation of the behavioral response. The present study utilizes the rat sciatic chronic constriction injury (CCI) model of neuropathic pain to compare the expression of static allodynia with that of cognitively controlled choice behavior in a two-arm maze, adapted from Hayashida et al. (2019). This modification, termed the Two-Arm Rodent Somatosensory (TARS) task, provides rats free choice to reach a desired goal box via a short "arm" of the maze with tactile probes as flooring versus a longer "arm" of the maze with a smooth surface. Here we demonstrate that static allodynia and avoidance of the nociceptive flooring in TARS develop in parallel over time, and that both behaviors also resolve in parallel following intrathecal pDNA-IL10 gene therapy. Details for the construction and use of this new maze design are also provided. Together, this study documents both: (a) the important finding that intrathecal IL-10 gene therapy does indeed resolve neuropathic pain as measured by a supraspinally-mediated behavioral task, and (b) a new, supraspinally-mediated task that allows behavioral assessments across weeks and allows the analysis of both development and resolution of neuropathic pain by therapeutic interventions. As such, the TARS operant behavior task is an improvement over other approaches such as the mechanical conflict-avoidance system which have difficulties demonstrating development and reversal of pain behavior in a within-subject design.
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Affiliation(s)
- M A Clements
- Department of Psychology and Neuroscience, University of Colorado - Boulder, Boulder, CO, USA
| | - A J Kwilasz
- Department of Psychology and Neuroscience, University of Colorado - Boulder, Boulder, CO, USA
| | - S T Litwiler
- Department of Psychology and Neuroscience, University of Colorado - Boulder, Boulder, CO, USA
| | - Z Sents
- Department of Engineering, University of Colorado - Boulder, Boulder, CO, USA
| | - B J Woodall
- Department of Psychology and Neuroscience, University of Colorado - Boulder, Boulder, CO, USA
| | - K Hayashida
- Pharmacology Department, Shin Nippon Biomedical Laboratories, Ld., Kagoshima, Japan
| | - L R Watkins
- Department of Psychology and Neuroscience, University of Colorado - Boulder, Boulder, CO, USA.
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147
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Attal N, Bouhassira D, Colvin L. Advances and challenges in neuropathic pain: a narrative review and future directions. Br J Anaesth 2023; 131:79-92. [PMID: 37210279 DOI: 10.1016/j.bja.2023.04.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/20/2023] [Accepted: 04/05/2023] [Indexed: 05/22/2023] Open
Abstract
Over the past few decades, substantial advances have been made in neuropathic pain clinical research. An updated definition and classification have been agreed. Validated questionnaires have improved the detection and assessment of acute and chronic neuropathic pain; and newer neuropathic pain syndromes associated with COVID-19 have been described. The management of neuropathic pain has moved from empirical to evidence-based medicine. However, appropriately targeting current medications and the successful clinical development of drugs acting on new targets remain challenging. Innovative approaches to improving therapeutic strategies are required. These mainly encompass rational combination therapy, drug repurposing, non-pharmacological approaches (such as neurostimulation techniques), and personalised therapeutic management. This narrative review reports historical and current perspectives regarding the definitions, classification, assessment, and management of neuropathic pain and explores potential avenues for future research.
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Affiliation(s)
- Nadine Attal
- Inserm U987, UVSQ-Paris-Saclay University, Ambroise Pare Hospital, Boulogne-Billancourt, France.
| | - Didier Bouhassira
- Inserm U987, UVSQ-Paris-Saclay University, Ambroise Pare Hospital, Boulogne-Billancourt, France
| | - Lesley Colvin
- University of Dundee, Ninewells Medical School, Ninewells Hospital, Dundee, UK
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148
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Stratton HJ, Boinon L, Gomez K, Martin L, Duran P, Ran D, Zhou Y, Luo S, Perez-Miller S, Patek M, Ibrahim MM, Patwardhan A, Moutal A, Khanna R. Targeting the vascular endothelial growth factor A/neuropilin 1 axis for relief of neuropathic pain. Pain 2023; 164:1473-1488. [PMID: 36729125 PMCID: PMC10277229 DOI: 10.1097/j.pain.0000000000002850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 11/08/2022] [Indexed: 02/03/2023]
Abstract
ABSTRACT Vascular endothelial growth factor A (VEGF-A) is a pronociceptive factor that causes neuronal sensitization and pain. We reported that blocking the interaction between the membrane receptor neuropilin 1 (NRP1) and VEGF-A-blocked VEGF-A-mediated sensory neuron hyperexcitability and reduced mechanical hypersensitivity in a rodent chronic neuropathic pain model. These findings identified the NRP1-VEGF-A signaling axis for therapeutic targeting of chronic pain. In an in-silico screening of approximately 480 K small molecules binding to the extracellular b1b2 pocket of NRP1, we identified 9 chemical series, with 6 compounds disrupting VEGF-A binding to NRP1. The small molecule with greatest efficacy, 4'-methyl-2'-morpholino-2-(phenylamino)-[4,5'-bipyrimidin]-6(1H)-one, designated NRP1-4, was selected for further evaluation. In cultured primary sensory neurons, VEGF-A enhanced excitability and decreased firing threshold, which was blocked by NRP1-4. In addition, NaV1.7 and CaV2.2 currents and membrane expression were potentiated by treatment with VEGF-A, and this potentiation was blocked by NRP1-4 cotreatment. Neuropilin 1-4 reduced VEGF-A-mediated increases in the frequency and amplitude of spontaneous excitatory postsynaptic currents in dorsal horn of the spinal cord. Neuropilin 1-4 did not bind to more than 300 G-protein-coupled receptors and receptors including human opioids receptors, indicating a favorable safety profile. In rats with spared nerve injury-induced neuropathic pain, intrathecal administration of NRP1-4 significantly attenuated mechanical allodynia. Intravenous treatment with NRP1-4 reversed both mechanical allodynia and thermal hyperalgesia in rats with L5/L6 spinal nerve ligation-induced neuropathic pain. Collectively, our findings show that NRP1-4 is a first-in-class compound targeting the NRP1-VEGF-A signaling axis to control voltage-gated ion channel function, neuronal excitability, and synaptic activity that curb chronic pain.
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Affiliation(s)
- Harrison J. Stratton
- Department of Pharmacology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Lisa Boinon
- Department of Pharmacology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Kimberly Gomez
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, New York, United States of America
- NYU Pain Research Center, 433 First Avenue, New York, NY 10010, United States of America
| | - Laurent Martin
- Department of Anesthesiology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Paz Duran
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, New York, United States of America
- NYU Pain Research Center, 433 First Avenue, New York, NY 10010, United States of America
| | - Dongzhi Ran
- Department of Pharmacology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Yuan Zhou
- Department of Pharmacology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Shizhen Luo
- Department of Pharmacology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Samantha Perez-Miller
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, New York, United States of America
- NYU Pain Research Center, 433 First Avenue, New York, NY 10010, United States of America
| | - Marcel Patek
- BrightRock Path, LLC, Tucson, Arizona 85704, United States
| | - Mohab M. Ibrahim
- Department of Anesthesiology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Amol Patwardhan
- Department of Anesthesiology, College of Medicine, The University of Arizona; Tucson, Arizona, 85724 United States of America
| | - Aubin Moutal
- Saint Louis University - School of Medicine, Department of Pharmacology and Physiology, 1402 S. Grand Blvd., Schwitalla Hall, Room 432, Saint Louis, MO 63104
| | - Rajesh Khanna
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, New York, United States of America
- NYU Pain Research Center, 433 First Avenue, New York, NY 10010, United States of America
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149
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Xu XD, Lin L, Qiu YB, Zeng BW, Chen Y, Liu JL, Ye CH, Wang JL, Liu PC, Zhang LC. Ultrasonic visualization technique for anatomical and functional analyses of the sciatic nerve in rats. Front Neurosci 2023; 17:1187669. [PMID: 37456994 PMCID: PMC10339105 DOI: 10.3389/fnins.2023.1187669] [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: 03/16/2023] [Accepted: 06/01/2023] [Indexed: 07/18/2023] Open
Abstract
Background and objective Ultrasound has been widely used in the diagnosis and minimally invasive treatment of peripheral nerve diseases in the clinic, but there is still a lack of feasibility analysis in rodent models of neurological disease. The purpose of this study was to investigate the changes in the cross-sectional area of the sciatic nerve of different genders and body weights and to explore the effectiveness and reliability of an ultrasound-guided block around the sciatic nerve in living rats. Methods Using ultrasound imaging anatomy of the sciatic nerve of rats, the cross-sectional area of the sciatic nerve in rats of different genders from 6 to 10 weeks old was calculated, and then analyzed its correlation with body weight. Further analyses were conducted through behavioral and cadaveric studies to evaluate the feasibility of ultrasound-guided perineural injection of the sciatic nerve in rats. Results We first reported that the sciatic nerve cross-sectional area of rats was increased with age (F = 89.169, P < 0.001), males had a higher sciatic nerve cross-sectional area than females (F = 60.770, P < 0.001), and there was a positive correlation with body weight (rMale = 0.8976, P < 0.001; rFemale = 0.7733, P < 0.001). Behavioral observation of rats showed that the lower extremity complete block rate was 80% following the administration of drugs around the sciatic nerve under ultrasound guidance and staining with methylene blue occurred in all sciatic nerves and surrounding muscles and fascia using 20 ultrasound-guided injections. Conclusions Ultrasound visualization technology can be used as a new auxiliary evaluation and intervention therapy for animal models of peripheral nerve injury, and will provide overwhelming new references for the basic research of neurological diseases.
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Affiliation(s)
- Xiao-Dong Xu
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Lei Lin
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yu-Bei Qiu
- School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Bang-Wei Zeng
- Administration Department of Nosocomial Infection, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ye Chen
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Jun-Le Liu
- Department of Anesthesiology, Xiamen Third Hospital, Xiamen, China
| | - Cai-Hong Ye
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Jia-Li Wang
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Pei-Chang Liu
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Liang-Cheng Zhang
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
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150
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Noor S, Pritha AN, Pasmay AA, Sanchez JE, Sanchez JJ, Fernandez-Oropeza AK, Sun MS, Dell’Orco M, Davies S, Savage DD, Mellios N, Milligan ED. Prenatal alcohol exposure dysregulates spinal and circulating immune cell circular RNA expression in adult female rats with chronic sciatic neuropathy. Front Neurosci 2023; 17:1180308. [PMID: 37360167 PMCID: PMC10288115 DOI: 10.3389/fnins.2023.1180308] [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: 03/06/2023] [Accepted: 05/09/2023] [Indexed: 06/28/2023] Open
Abstract
Alcohol consumption during pregnancy is associated with Fetal Alcohol Spectrum Disorders (FASD) that results in a continuum of central nervous system (CNS) deficits. Emerging evidence from both preclinical and clinical studies indicate that the biological vulnerability to chronic CNS disease in FASD populations is driven by aberrant neuroimmune actions. Our prior studies suggest that, following minor nerve injury, prenatal alcohol exposure (PAE) is a risk factor for developing adult-onset chronic pathological touch sensitivity or allodynia. Allodynia in PAE rats occurs concurrently with heightened proinflammatory peripheral and spinal glial-immune activation. However, minor nerve-injured control rats remain non-allodynic, and corresponding proinflammatory factors are unaltered. A comprehensive molecular understanding of the mechanism(s) that underlie PAE-induced proinflammatory bias during adulthood remains elusive. Non-coding circular RNAs (circRNAs) are emerging as novel modulators of gene expression. Here, we hypothesized that PAE induces dysregulation of circRNAs that are linked to immune function under basal and nerve-injured conditions during adulthood. Utilizing a microarray platform, we carried out the first systematic profiling of circRNAs in adult PAE rats, prior to and after minor nerve injury. The results demonstrate a unique circRNA profile in adult PAE rats without injury; 18 circRNAs in blood and 32 spinal circRNAs were differentially regulated. Following minor nerve injury, more than 100 differentially regulated spinal circRNAs were observed in allodynic PAE rats. Bioinformatic analysis identified that the parental genes of these circRNAs are linked to the NF-κB complex, a central transcription factor for pain-relevant proinflammatory cytokines. Quantitative real-time PCR was employed to measure levels of selected circRNAs and linear mRNA isoforms. We have validated that circVopp1 was significantly downregulated in blood leukocytes in PAE rats, concurrent with downregulation of Vopp1 mRNA levels. Spinal circVopp1 levels were upregulated in PAE rats, regardless of nerve injury. Additionally, PAE downregulated levels of circItch and circRps6ka3, which are linked to immune regulation. These results demonstrate that PAE exerts long-lasting dysregulation of circRNA expression in blood leukocytes and the spinal cord. Moreover, the spinal circRNA expression profile following peripheral nerve injury is differentially modulated by PAE, potentially contributing to PAE-induced neuroimmune dysregulation.
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