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Pan C, Xu Y, Jiang Z, Fan C, Chi Z, Zhang Y, Miao M, Ren Y, Wu Z, Xu L, Mei C, Chen Q, Xi Y, Chen X. Naringenin relieves paclitaxel-induced pain by suppressing calcitonin gene-related peptide signalling and enhances the anti-tumour action of paclitaxel. Br J Pharmacol 2024; 181:3136-3159. [PMID: 38715438 DOI: 10.1111/bph.16397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 02/01/2024] [Accepted: 03/21/2024] [Indexed: 08/03/2024] Open
Abstract
BACKGROUND AND PURPOSE Chemotherapy-induced peripheral neuropathy (CIPN) commonly causes neuropathic pain, but its pathogenesis remains unclear, and effective therapies are lacking. Naringenin, a natural dihydroflavonoid compound, has anti-inflammatory, anti-nociceptive and anti-tumour activities. However, the effects of naringenin on chemotherapy-induced pain and chemotherapy effectiveness remain unexplored. EXPERIMENTAL APPROACH Female and male mouse models of chemotherapy-induced pain were established using paclitaxel. Effects of naringenin were assessed on pain induced by paclitaxel or calcitonin gene-related peptide (CGRP) and on CGRP expression in dorsal root ganglia (DRG) and spinal cord tissue. Additionally, we examined peripheral macrophage infiltration, glial activation, c-fos expression, DRG neuron excitability, microglial M1/M2 polarization, and phosphorylation of spinal NF-κB. Furthermore, we investigated the synergic effect and related mechanisms of naringenin and paclitaxel on cell survival of cancer cells in vitro. KEY RESULTS Systemic administration of naringenin attenuated paclitaxel-induced pain in both sexes. Naringenin reduced paclitaxel-enhanced CGRP expression in DRGs and the spinal cord, and alleviated CGRP-induced pain in naïve mice of both sexes. Naringenin mitigated macrophage infiltration and reversed paclitaxel-elevated c-fos expression and DRG neuron excitability. Naringenin decreased spinal glial activation and NF-κB phosphorylation in both sexes but influenced microglial M1/M2 polarization only in females. Co-administration of naringenin with paclitaxel enhanced paclitaxel's anti-tumour effect, impeded by an apoptosis inhibitor. CONCLUSION AND IMPLICATIONS Naringenin's anti-nociceptive mechanism involves CGRP signalling and neuroimmunoregulation. Furthermore, naringenin facilitates paclitaxel's anti-tumour action, possibly involving apoptosis. This study demonstrates naringenin's potential as a supplementary treatment in cancer therapy by mitigating side effects and potentiating efficacy of chemotherapy.
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Affiliation(s)
- Chen Pan
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Yuhao Xu
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Zongsheng Jiang
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Chengjiang Fan
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Zhexi Chi
- Department of Anesthesiology, Ningbo No. 2 Hospital, Ningbo, China
| | - Yu Zhang
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Mengmeng Miao
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Yuxuan Ren
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Ziyi Wu
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Linbin Xu
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Changqing Mei
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Qingge Chen
- Department of Anesthesiology, Ningbo No. 2 Hospital, Ningbo, China
- Department of Anesthesiology, The People's Hospital of Bozhou, Bozhou, China
| | - Yang Xi
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
| | - Xiaowei Chen
- Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, China
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Liu J, Gao T, Zhou B, Xu X, Zhai X, Yao Q, Chen X, Liu L, Cui W, Wu X. Fast green FCF prevents postoperative cognitive dysfunction via the downregulation of the P2X4 receptor in mice. Int Immunopharmacol 2023; 121:110462. [PMID: 37301120 DOI: 10.1016/j.intimp.2023.110462] [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: 04/07/2023] [Revised: 05/23/2023] [Accepted: 06/05/2023] [Indexed: 06/12/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is a decline in cognitive function affecting the mental health of aged patients after surgery. The pathological mechanisms underlying POCD have not yet been clarified. The overexpression of the P2X4 receptor in the central nervous system (CNS) was reported to be associated with the onset of POCD. Fast green FCF (FGF), a widely used food dye, could decrease the expression of the P2X4 receptor in the CNS. This study aimed to explore whether FGF could prevent POCD via the down-regulation of CNS P2X4 receptor. Exploratory laparotomy under the anesthesia of fentanyl and droperidol was carried to establish an animal model of POCD in 10-12-months-olds mice. FGF significantly attenuated cognitive impairments and down-regulated the expression of the P2X4 receptor induced by surgery in mice. Moreover, the blockade of CNS P2X4 receptor by intrahippocampal injection of 5-BDBD induced cognitive-enhancing effects on POCD mice. In addition, the effects of FGF were abolished by ivermectin, which is a positive allosteric modulator of the P2X4 receptor. FGF also inhibited M1 polarization of microglia cells, decreased the phosphorylation of nuclear factor-κB (NF-κB), and reduced the production of pro-inflammatory cytokines. These results suggested that FGF produced anti-POCD cognitive-enhancing effects via down-regulation of the P2X4 receptor-associated neuroinflammation, providing a support that FGF might be a potential treatment for POCD.
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Affiliation(s)
- Jun Liu
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Tao Gao
- University-Town Hospital of Chongqing Medical University, Chongqing 401331, China
| | - Bin Zhou
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Xiaoxiao Xu
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Xiaojie Zhai
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Qinghuan Yao
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
| | - Xiaowei Chen
- Translational Medicine Center of Pain, Emotion and Cognition, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Lin Liu
- Ningbo Women & Children's Hospital, Ningbo 315012, China
| | - Wei Cui
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China; Translational Medicine Center of Pain, Emotion and Cognition, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo 315211, China; Ningbo Kangning Hospital, Ningbo 315211, China
| | - Xiang Wu
- The First Affiliated Hospital of Ningbo University, Ningbo 315010, China
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Zheng H, Zhao C, Lu Y, Cao J, Zeng F, Wang H, Qin Z, Tao T. Celastrol-encapsulated microspheres prepared by microfluidic electrospray for alleviating inflammatory pain. BIOMATERIALS ADVANCES 2023; 149:213398. [PMID: 36990025 DOI: 10.1016/j.bioadv.2023.213398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
Inflammatory pain is induced by trauma, infection, chemical stimulation, etc. It causes severe physical and psychological agony to patients. Celastrol has powerful anti-inflammatory property and has achieved good results in various inflammation-related diseases. However, the low water solubility and multi-system toxicity limit its clinical application. Herein, we proposed alginate microspheres with core-shell structure which encapsulated celastrol by microfluidic electrospray to effectively overcome the shortcomings and improve the therapeutic effect. The microspheres had uniform size and good biocompatibility, and could release the loaded drugs in the gut. The behavioral tests showed that the celastrol-loaded microspheres effectively alleviated inflammatory pain, and the hematoxylin and eosin staining (HE staining), immunofluorescence and detection of inflammatory cytokines showed the anti-inflammatory effect. These results indicated that the microspheres could reduce dose and toxicity without affecting efficacy, and facilitate the application of celastrol in different clinical situations.
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Affiliation(s)
- Huiyu Zheng
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; Department of Anesthesiology, Central People's Hospital of Zhanjiang, Yuanzhu Road, Zhanjiang 524045, China
| | - Cheng Zhao
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210096, China; Department of Endocrinology, Health Science Center, The First Affiliated Hospital, Shenzhen University, Shenzhen 518035, China
| | - Yitian Lu
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; Department of Anesthesiology, Central People's Hospital of Zhanjiang, Yuanzhu Road, Zhanjiang 524045, China
| | - Jun Cao
- Department of Anesthesiology, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen 518000, China
| | - Fanning Zeng
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Huan Wang
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China.
| | - Zaisheng Qin
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Tao Tao
- Department of Anesthesiology, Central People's Hospital of Zhanjiang, Yuanzhu Road, Zhanjiang 524045, China.
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Ducza L, Gajtkó A, Hegedűs K, Bakk E, Kis G, Gaál B, Takács R, Szücs P, Matesz K, Holló K. Neuronal P2X4 receptor may contribute to peripheral inflammatory pain in rat spinal dorsal horn. Front Mol Neurosci 2023; 16:1115685. [PMID: 36969557 PMCID: PMC10033954 DOI: 10.3389/fnmol.2023.1115685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 02/14/2023] [Indexed: 03/11/2023] Open
Abstract
ObjectiveIntense inflammation may result in pain, which manifests as spinal central sensitization. There is growing evidence that purinergic signaling plays a pivotal role in the orchestration of pain processing. Over the last decade the ionotropic P2X purino receptor 4 (P2X4) got into spotlight in neuropathic disorders, however its precise spinal expression was scantily characterized during inflammatory pain. Thus, we intended to analyze the receptor distribution within spinal dorsal horn and lumbar dorsal root ganglia (DRG) of rats suffering in inflammatory pain induced by complete Freund adjuvant (CFA).MethodsCFA-induced peripheral inflammation was validated by mechanical and thermal behavioral tests. In order to ensure about the putative alteration of spinal P2X4 receptor gene expression qPCR reactions were designed, followed by immunoperoxidase and Western blot experiments to assess changes at a protein level. Colocalization of P2X4 with neuronal and glial markers was investigated by double immunofluorescent labelings, which were subsequently analyzed with IMARIS software. Transmission electronmicroscopy was applied to study the ultrastructural localization of the receptor. Concurrently, in lumbar DRG cells similar methodology has been carried out to complete our observations.ResultsThe figures of mechanical and thermal behavioral tests proved the establishment of CFA-induced inflammatory pain. We observed significant enhancement of P2X4 transcript level within the spinal dorsal horn 3 days upon CFA administration. Elevation of P2X4 immunoreactivity within Rexed lamina I-II of the spinal gray matter was synchronous with mRNA expression, and confirmed by protein blotting. According to IMARIS analysis the robust protein increase was mainly detected on primary afferent axonterminals and GFAP-labelled astrocyte membrane compartments, but not on postsynaptic dendrites was also validated ultrastructurally within the spinal dorsal horn. Furthermore, lumbar DRG analysis demonstrated that peptidergic and non-peptidergic nociceptive subsets of ganglia cells were also abundantly positive for P2X4 receptor in CFA model.ConclusionHere we provide novel evidence about involvement of neuronal and glial P2X4 receptor in the establishment of inflammatory pain.
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Corrigendum: Purinergic signaling systems across comparative models of spinal cord injury. Neural Regen Res 2022; 18:689-696. [PMID: 36018196 PMCID: PMC9727416 DOI: 10.4103/1673-5374.350234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
[This corrects the article DOI: 10.4103/1673-5374.338993].
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赵 佳, 杨 荷, 王 招, 朱 海, 谢 敏. [ANA- 12 inhibits spinal inflammation and alleviates acute and chronic pain in rats by targeted blocking of BDNF/TrkB signaling]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:232-237. [PMID: 35365447 PMCID: PMC8983361 DOI: 10.12122/j.issn.1673-4254.2022.02.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To investigate the inhibitory effect of ANA-12 that blocks brain-derived neurotrophic factor (BDNF)/ tropomyosin receptor kinase B (TrkB) signaling on inflammatory pain in rats and explore the underlying mechanism. METHODS Forty-two adult SD rats were randomized into BDNF-induced acute pain group (n=24) and CFA-induced chronic pain group. The former group were randomly divided into 4 subgroups, including a control group, ANA-12 treatment group, BDNF treatment group, and BDNF+ANA-12 treatment group; the latter group were subgrouped into control group, CFA treatment group (CFA) and CFA + ANA-12 treatment group. The effects of ANA-12 treatment on pain behaviors of the rats with BDNF-induced acute pain and CFA-induced chronic inflammatory pain were observed. Western blotting was used to examine TrkB signaling and expressions of microglia marker protein Iba1 and TNF-α in the spinal cord of the rats. RESULTS BDNF injection into the subarachnoid space significantly increased the number of spontaneous paw withdrawal of the rats (P < 0.05), which was obviously reduced by ANA-12 treatment (P < 0.05). The rats with intraplantar injection of CFA, showed significantly increased ipsilateral mechanical stimulation sensitivity (P < 0.05), and ANA-12 treatment obviously increased the ipsilateral foot withdrawal threshold (P < 0.05). Treatment with either BDNF or CFA significantly increased the phosphorylation level of TrkB (Y705) in the spinal cord of the rats (P < 0.05), which was significantly lowered by ANA-12 treatment (P < 0.05). Treatment with BDNF and CFA both significantly up-regulated the expressions of Iba1 and TNF-α in the spinal cord (P < 0.05), but ANA-12 significantly reduced their expression levels (P < 0.05). CONCLUSION ANA-12 can reduce spinal cord inflammation and relieve acute and chronic pain in rats by targeted blocking of BDNF/TrkB signaling.
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Affiliation(s)
- 佳佳 赵
- />湖北科技学院药学院,湖北 咸宁 437100School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
| | - 荷雨 杨
- />湖北科技学院药学院,湖北 咸宁 437100School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
| | - 招娣 王
- />湖北科技学院药学院,湖北 咸宁 437100School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
| | - 海丽 朱
- />湖北科技学院药学院,湖北 咸宁 437100School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
| | - 敏 谢
- />湖北科技学院药学院,湖北 咸宁 437100School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
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Yang Y, Zhao J, Li Y, Li X, Chen X, Feng Z. Fragile X mental retardation protein-regulated proinflammatory cytokine expression in the spinal cord contributes to the pathogenesis of inflammatory pain induced by complete Freund's adjuvant. J Neurochem 2021; 159:512-524. [PMID: 34338322 DOI: 10.1111/jnc.15485] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 07/18/2021] [Accepted: 07/26/2021] [Indexed: 11/25/2022]
Abstract
Studies have verified that Fragile X mental retardation protein (FMRP), an RNA-binding protein, plays a potential role in the pathogenesis of formalin- and (RS)-3,5-dihydroxyphenylglycine (DHPG)-induced abnormal pain sensations. However, the role of FMRP in inflammatory pain has not been reported. Here, we showed an increase in FMRP expression in the spinal dorsal horn (SDH) in a rat model of inflammatory pain induced by complete Freund's adjuvant (CFA). Double immunofluorescence staining revealed that FMRP was mainly expressed in spinal neurons and colocalized with proinflammatory cytokines [tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6)]. After consecutive intrathecal injection of fragile X mental retardation 1 (Fmr1) small interfering RNA (siRNA) for 3 days post-CFA injection, FMRP expression in the SDH was reduced, and CFA-induced hyperalgesia was decreased. In addition, the CFA-induced increase in spinal TNF-α and IL-6 production was significantly suppressed by intrathecal administration of Fmr1 siRNA. Together, these results suggest that FMRP regulates TNF-α and IL-6 levels in the SDH and plays an important role in inflammatory pain.
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Affiliation(s)
- Yixin Yang
- Department of Pain Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine.,Department of Anesthesiology, Ningbo City First Hospital, Ningbo, Zhejiang, China
| | - Jinsong Zhao
- Department of Pain Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine.,Department of Anesthesiology, Ningbo NO.6 Hospital, Ningbo, Zhejiang, China
| | - Yunze Li
- Department of Pain Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine
| | - Xiangyao Li
- Institute of Neuroscience, Key Laboratory of Medical Neurobiology, Ministry of Health of China, School of Medicine, Zhejiang University
| | - Xiaowei Chen
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Zhiying Feng
- Department of Pain Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine
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Chen L, Zheng J, Yang Z, Chen W, Wang Y, Wei P. Identification of key candidate genes in local dorsal root ganglion inflammation by integrated bioinformatics analysis. Exp Ther Med 2021; 22:821. [PMID: 34131444 PMCID: PMC8193217 DOI: 10.3892/etm.2021.10253] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 03/18/2021] [Indexed: 12/15/2022] Open
Abstract
The purpose of the present study was to identify potential markers of local dorsal root ganglion (DRG) inflammation to aid diagnosis, treatment and prognosis evaluation of DRG pain. A localized inflammation of the DRG (LID) rat model was used to study the contribution of inflammation to pain. The dataset GSE38859 was obtained from the Gene Expression Omnibus database. Pre-treatment standardization of gene expression data for each experiment was performed using the R/Bioconductor Limma package. Differentially expressed genes (DEGs) were identified between a LID model and a sham surgery control group. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses of DEGs and gene set enrichment analysis (GSEA) were carried out using the ‘clusterProfiler’ package in R. Using the Search Tool for Retrieval of Interacting Genes, a protein-protein interaction network was constructed and visualized. Candidate genes with the highest potential validity were validated using reverse transcription-quantitative PCR and western blotting. In total, 66 DEGs were enriched in GO terms related to inflammation and the immune response processes. KEGG analysis revealed 14 associated signaling pathway terms. Protein-protein interaction network analysis revealed 9 node genes, 3 of which were among the top 10 DEGs. Matrix metallopeptidase 9, chemokine CXCL9, and complement component 3 were identified as key regulators of DRG inflammatory pain progression.
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Affiliation(s)
- Linhai Chen
- Department of Plastic and Reconstructive Surgery, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, Zhejiang 315010, P.R. China
| | - Junshui Zheng
- Medical College, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Zhuan Yang
- Medical College, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Weiwei Chen
- Department of Plastic and Reconstructive Surgery, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, Zhejiang 315010, P.R. China
| | - Yangjian Wang
- Department of Plastic and Reconstructive Surgery, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, Zhejiang 315010, P.R. China
| | - Peng Wei
- Department of Plastic and Reconstructive Surgery, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, Zhejiang 315010, P.R. China
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Gaff J, Jackaman C, Papadimitriou J, Waters S, McLean C, Price P. Immunohistochemical evidence of P2X7R, P2X4R and CaMKK2 in pyramidal neurons of frontal cortex does not align with Alzheimer's disease. Exp Mol Pathol 2021; 120:104636. [PMID: 33838119 DOI: 10.1016/j.yexmp.2021.104636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/25/2021] [Accepted: 04/03/2021] [Indexed: 10/21/2022]
Abstract
Alzheimer's disease (AD) is an incurable neurodegenerative condition resulting in progressive cognitive decline. Pathological features include Aβ plaques, neurofibrillary tangles, neuroinflammation and neuronal death. Purinergic receptors 7 and 4 (P2X7R and P2X4R) and calcium/calmodulin-dependent kinase kinase 2 (CaMKK2) are implicated in neuronal death. We used immunohistochemistry to investigate the distribution of these proteins in neurones from frontal cortex of donors (n = 3/group; aged 79-83 years) who died with and without AD. Neurones were identified morphologically and immunoperoxidase staining was achieved using commercial antibodies. Immunoreactive neurones were counted for each protein by 2-3 raters blinded to the diagnoses. We observed no differences in percentages of P2X7R, P2X4R or CaMKK2 positive neurones (p = 0.2-0.99), but sections from individuals with AD had marginally fewer neurones (p = 0.10). Hence P2X7R, P2X4R or CaMKK2 appear to be expressed in neurones from older donors, but expression does not associate with AD.
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Affiliation(s)
- Jessica Gaff
- School of Pharmacy and Biomedical Science, Curtin University, Australia
| | - Connie Jackaman
- School of Pharmacy and Biomedical Science, Curtin University, Australia; Curtin Health Innovation Research Institute, Curtin University, Australia
| | - John Papadimitriou
- Pathology & Laboratory Medicine, University of Western Australia, Australia; Pathwest Laboratories, Western Australia, Australia
| | - Shelley Waters
- School of Pharmacy and Biomedical Science, Curtin University, Australia
| | - Catriona McLean
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Victoria, Australia; Victorian Brain Bank, Florey Institute of Neuroscience and Mental Health, Victoria, Australia
| | - Patricia Price
- School of Pharmacy and Biomedical Science, Curtin University, Australia; Curtin Health Innovation Research Institute, Curtin University, Australia.
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Wang F, Wang Y, Jiang L, Wang W, Sang J, Wang X, Lu F, Liu F. The food additive fast green FCF inhibits α-synuclein aggregation, disassembles mature fibrils and protects against amyloid-induced neurotoxicity. Food Funct 2021; 12:5465-5477. [PMID: 33997868 DOI: 10.1039/d0fo03301d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
α-Synuclein (α-syn) aggregates into cytotoxic amyloid fibrils, which are recognized as the defining neuropathological feature of Parkinson's disease (PD). Therefore, inhibiting α-syn fibrillogenesis and disrupting the preformed fibrils are both considered attractive strategies to cure PD. We discovered that a safe food additive, fast green FCF, is capable of inhibiting α-synuclein fibrillogenesis and reducing the related cytotoxicity. Thioflavin T fluorescence assays demonstrated that fast green FCF could inhibit the fibrillogenesis α-synuclein. In the presence of 100 μM fast green FCF, amorphous aggregates were formed and observed by atomic force microscopy. Toxicity assays in cell cultures revealed that fast green FCF significantly reduced the cytotoxicity of α-syn. Molecular dynamics simulations revealed the potential mechanism of the interactions between fast green FCF and α-synuclein. Fast green FCF greatly disrupted the α-synuclein pentamer and reduced the β-sheet content by reducing both nonpolar and polar interactions. Furthermore, two binding sites were identified, named region I (Y39-K45) and region II (H50-Q62). Our data reveal that electrostatic interactions, hydrogen bonds, and π-π interactions synergistically contribute to the binding of fast green FCF to the α-synuclein pentamer. These results indicate that fast green FCF is a candidate prototype for the development of drugs against the aggregation of amyloid fibrils in PD.
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Affiliation(s)
- Fenghua Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Ying Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Luying Jiang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Wenqian Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Jingcheng Sang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Xinyu Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Fuping Lu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
| | - Fufeng Liu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
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Trapero C, Martín-Satué M. Purinergic Signaling in Endometriosis-Associated Pain. Int J Mol Sci 2020; 21:E8512. [PMID: 33198179 PMCID: PMC7697899 DOI: 10.3390/ijms21228512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022] Open
Abstract
Endometriosis is an estrogen-dependent gynecological disease, with an associated chronic inflammatory component, characterized by the presence of endometrial tissue outside the uterine cavity. Its predominant symptom is pain, a condition notably altering the quality of life of women with the disease. This review is intended to exhaustively gather current knowledge on purinergic signaling in endometriosis-associated pain. Altered extracellular ATP hydrolysis, due to changes in ectonucleotidase activity, has been reported in endometriosis; the resulting accumulation of ATP in the endometriotic microenvironment points to sustained activation of nucleotide receptors (P2 receptors) capable of generating a persistent pain message. P2X3 receptor, expressed in sensory neurons, mediates nociceptive, neuropathic, and inflammatory pain, and is enrolled in endometriosis-related pain. Pharmacological inhibition of P2X3 receptor is under evaluation as a pain relief treatment for women with endometriosis. The role of other ATP receptors is also discussed here, e.g., P2X4 and P2X7 receptors, which are involved in inflammatory cell-nerve and microglia-nerve crosstalk, and therefore in inflammatory and neuropathic pain. Adenosine receptors (P1 receptors), by contrast, mainly play antinociceptive and anti-inflammatory roles. Purinome-targeted drugs, including nucleotide receptors and metabolizing enzymes, are potential non-hormonal therapeutic tools for the pharmacological management of endometriosis-related pain.
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Affiliation(s)
- Carla Trapero
- Departament de Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, Campus Bellvitge, Universitat de Barcelona, 08907 Barcelona, Spain;
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Oncobell Program, CIBERONC, 08908 Barcelona, Spain
| | - Mireia Martín-Satué
- Departament de Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, Campus Bellvitge, Universitat de Barcelona, 08907 Barcelona, Spain;
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Oncobell Program, CIBERONC, 08908 Barcelona, Spain
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12
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Zhang WJ, Luo C, Pu FQ, Zhu JF, Zhu Z. The role and pharmacological characteristics of ATP-gated ionotropic receptor P2X in cancer pain. Pharmacol Res 2020; 161:105106. [DOI: 10.1016/j.phrs.2020.105106] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/21/2020] [Accepted: 07/24/2020] [Indexed: 02/07/2023]
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13
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Oo TT, Pratchayasakul W, Chattipakorn N, Chattipakorn SC. Potential Roles of Myeloid Differentiation Factor 2 on Neuroinflammation and Its Possible Interventions. Mol Neurobiol 2020; 57:4825-4844. [PMID: 32803490 DOI: 10.1007/s12035-020-02066-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023]
Abstract
Neuroinflammation is the primary response by immune cells in the nervous system to protect against infection. Chronic and uncontrolled neuroinflammation triggers neuronal injury and neuronal death resulting in a variety of neurodegenerative disorders. Therefore, fine tuning of the immune response in the nervous system is now extensively considered as a potential therapeutic intervention for those diseases. The immune cells of the nervous system express Toll-like receptor 4 (TLR4) together with myeloid differentiation factor 2 (MD-2) to protect against the pathogens. Over the last 10 years, antagonists targeting the functional domains of MD-2 have become attractive pharmacological intervention strategies in pre-clinical studies into neuroinflammation and its associated brain pathologies. This review aims to summarize and discuss the roles of TLR4-MD-2 signaling pathway activation in various models of neuroinflammation. This review article also highlights the studies reporting the effect of MD-2 antagonists on neuroinflammation in in vitro and in vivo studies.
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Affiliation(s)
- Thura Tun Oo
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.,Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.,Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.,Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand. .,Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand. .,Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
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14
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Zhang WJ, Luo HL, Zhu ZM. The role of P2X4 receptors in chronic pain: A potential pharmacological target. Biomed Pharmacother 2020; 129:110447. [PMID: 32887026 DOI: 10.1016/j.biopha.2020.110447] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic pain is a common symptom of most clinical diseases, which seriously affects the psychosomatic health of patients and brings some pain to patients. Due to its pathological mechanism is very complicated and the treatment of chronic pain has always been a difficult problem in clinical. Normally, drugs are usually used to relieve pain, but the analgesic effect is not good, especially for cancer pain patients, the analgesic effect is poor. Therefore, exploring the pathogenesis and treatment of chronic pain has aroused the interest of many researchers. A large number of studies have shown that the role of ATP and P2X4 receptor (P2X4R) play an important role in the pathogenesis of chronic pain. P2X4R is dependent on ATP ligand-gated ion channel receptor, which can be activated by ATP and plays an important role in the information transmission of nerve system and the formation of pain. Therefore, in this paper, we comprehensively described the structure and biological functions of P2X4R, and outlined behavioral evaluation methods of chronic pain models. Moreover, we also explored the inherent relationship between P2X4R and chronic pain, and described the therapeutic effect of P2X4R antagonist on chronic pain, and provided some valuable help for the treatment of chronic pain.
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Affiliation(s)
- Wen-Jun Zhang
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, 343000, China.
| | - Hong-Liang Luo
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, 343000, China.
| | - Zheng-Ming Zhu
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi Province, 343000, China.
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15
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Zhang WJ, Zhu ZM, Liu ZX. The role of P2X4 receptor in neuropathic pain and its pharmacological properties. Pharmacol Res 2020; 158:104875. [PMID: 32407956 DOI: 10.1016/j.phrs.2020.104875] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 03/02/2020] [Accepted: 04/24/2020] [Indexed: 12/21/2022]
Abstract
Neuropathic pain (NPP) is a common symptom of most diseases in clinic, which seriously affects the mental health of patients and brings certain pain to patients. Due to its pathological mechanism is very complicated, and thus, its treatment has been one of the challenges in the field of medicine. Therefore, exploring the pathogenesis and treatment approach of NPP has aroused the interest of many researchers. ATP is an important energy information substance, which participates in the signal transmission in the body. The P2 × 4 receptor (P2 × 4R) is dependent on ATP ligand-gated cationic channel receptor, which can be activated by ATP and plays an important role in the transmission of information in the nervous system and the formation of pain. In this paper, we provide a comprehensive review of the structure and function of the P2 × 4R gene. We also discuss the pathogenesis of NPP and the intrinsic relationship between P2 × 4R and NPP. Moreover, we explore the pharmacological properties of P2 × 4R antagonists or inhibitors used as targeted therapies for NPP.
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Affiliation(s)
- Wen-Jun Zhang
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi province, 343000, China.
| | - Zheng-Ming Zhu
- The Second Affiliated Hospital, Nanchang University, Nanchang City, Jiangxi province, 343000, China.
| | - Zeng-Xu Liu
- Basic Medicine, Nanchang University, Nanchang City, Jiangxi province, 343000, China
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16
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Yang J, Liu R, Lu F, Xu F, Zheng J, Li Z, Cui W, Wang C, Zhang J, Xu S, Zhou W, Wang Q, Chen J, Chen X. Fast Green FCF Attenuates Lipopolysaccharide-Induced Depressive-Like Behavior and Downregulates TLR4/Myd88/NF-κB Signal Pathway in the Mouse Hippocampus. Front Pharmacol 2019; 10:501. [PMID: 31139084 PMCID: PMC6519320 DOI: 10.3389/fphar.2019.00501] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 04/23/2019] [Indexed: 01/09/2023] Open
Abstract
Depression is a common neuropsychiatric disorder and new anti-depressive treatments are still in urgent demand. Fast Green FCF, a safe biocompatible color additive, has been suggested to mitigate chronic pain. However, Fast green FCF’s effect on depression is unknown. We aimed to investigate Fast green FCF’s effect on lipopolysaccharide (LPS)-induced depressive-like behavior and the underlying mechanisms. Pretreatment of Fast green FCF (100 mg/kg, i.p. daily for 7 days) alleviated depressive-like behavior in LPS-treated mice. Fast green FCF suppressed the LPS-induced microglial and astrocyte activation in the hippocampus. Fast green FCF decreased the mRNA and protein levels of Toll-like receptor 4 (TLR4) and Myeloid differentiation primary response 88 (Myd88) and suppressed the phosphorylation of nuclear factor-κB (NF-κB) in the hippocampus of LPS-treated mice. Fast green FCF also downregulated hippocampal tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6, but did not alter the level of the brain-derived neurotrophic factor (BDNF) in the hippocampus of LPS-treated mice. The molecular docking simulation predicts that Fast green FCF may interact with TLR4 and interrupt the formation of the TLR4-MD2 complex. In conclusion, the anti-depressive action of Fast green FCF in LPS-treated mice may involve the suppression of neuroinflammation and the downregulation of TLR4/Myd88/NF-κB signal pathway in mouse hippocampus. Our findings indicate the potential of Fast green FCF for controlling depressive symptoms.
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Affiliation(s)
- Jing Yang
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Rongjun Liu
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Fan Lu
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Fang Xu
- Department of Anesthesiology, Ningbo No. 2 Hospital, Ningbo, China
| | - Jinwei Zheng
- Department of Anesthesiology, Ningbo No. 2 Hospital, Ningbo, China
| | - Zhao Li
- Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wei Cui
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Chuang Wang
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Junfang Zhang
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Shujun Xu
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Wenhua Zhou
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Qinwen Wang
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Junping Chen
- Department of Anesthesiology, Ningbo No. 2 Hospital, Ningbo, China
| | - Xiaowei Chen
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
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