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Zhang X, Yang Q, Ding T, Xu J, Yan Z, Men Y, Xin W, Xu H. Retracted Article: Gm5820, an antisense RNA of FGF1, suppresses FGF1 expression at the posttranscriptional level to inactivate the ERK/STAT3 pathway and alleviates neuropathic pain in mice. RSC Adv 2019; 9:28364-28376. [PMID: 35529622 PMCID: PMC9071159 DOI: 10.1039/c9ra03791h] [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] [Received: 05/20/2019] [Accepted: 09/02/2019] [Indexed: 11/21/2022] Open
Abstract
Emerging evidence reveals that lncRNAs play important roles in various pathological processes, but precious little indicates their regulatory role in neuropathic pain.
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Affiliation(s)
- Xin Zhang
- Department of Pain
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Qing Yang
- Department of Anesthesiology
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Tao Ding
- Department of Anesthesiology
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Jingyu Xu
- Department of Pain
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Zeng Yan
- Department of Anesthesiology
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Yanhua Men
- Department of Anesthesiology
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Wenqi Xin
- Department of Anesthesiology
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
| | - Haixia Xu
- Department of Anesthesiology
- Huaihe Hospital of Henan University
- Kaifeng 475000
- China
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Wang XL, Cui LW, Liu Z, Gao YM, Wang S, Li H, Liu HX, Yu LJ. Effects of TRPA1 activation and inhibition on TRPA1 and CGRP expression in dorsal root ganglion neurons. Neural Regen Res 2019; 14:140-148. [PMID: 30531088 PMCID: PMC6262987 DOI: 10.4103/1673-5374.243719] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Transient receptor potential ankyrin 1 (TRPA1) is a key player in pain and neurogenic inflammation, and is localized in nociceptive primary sensory dorsal root ganglion (DRG) neurons. TRPA1 plays a major role in the transmission of nociceptive sensory signals. The generation of neurogenic inflammation appears to involve TRPA1-evoked release of calcitonin gene-related peptide (CGRP). However, it remains unknown whether TRPA1 or CGRP expression is affected by TRPA1 activation. Thus, in this study, we examined TRPA1 and CGRP expression in DRG neurons in vitro after treatment with the TRPA1 activator formaldehyde or the TRPA1 blocker menthol. In addition, we examined the role of extracellular signal-regulated protein kinase 1/2 (ERK1/2) in this process. DRG neurons in culture were exposed to formaldehyde, menthol, the ERK1/2 inhibitor PD98059 + formaldehyde, or PD98059 + menthol. After treatment, real-time polymerase chain reaction, western blot assay and double immunofluorescence labeling were performed to evaluate TRPA1 and CGRP expression in DRG neurons. Formaldehyde elevated mRNA and protein levels of TRPA1 and CGRP, as well as the proportion of TRPA1- and CGRP-positive neurons. In contrast, menthol reduced TRPA1 and CGRP expression. Furthermore, the effects of formaldehyde, but not menthol, on CGRP expression were blocked by pretreatment with PD98059. PD98059 pretreatment did not affect TRPA1 expression in the presence of formaldehyde or menthol.
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Affiliation(s)
- Xiao-Lei Wang
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Li-Wei Cui
- Department of Respiratory Medicine, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Zhen Liu
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Yue-Ming Gao
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Sheng Wang
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Hao Li
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Hu-Xiang Liu
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Ling-Jia Yu
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
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Donnerer J, Liebmann I. ERK1/2 Phosphorylation in the Rat Supraoptic Nucleus, Dorsal Raphe Nucleus, and Locus Coeruleus Neurons Following Noxious Stimulation to the Hind Paw. Pharmacology 2015; 97:57-62. [DOI: 10.1159/000442211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 11/05/2015] [Indexed: 11/19/2022]
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pERK1/2 immunofluorescence in rat dorsal horn and paraventricular nucleus neurons as a marker for sensitization and inhibition in the pain pathway. Tissue Cell 2015; 47:55-60. [DOI: 10.1016/j.tice.2014.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 11/11/2014] [Accepted: 11/17/2014] [Indexed: 12/27/2022]
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Langeslag M, Quarta S, Leitner MG, Kress M, Mair N. Sphingosine 1-phosphate to p38 signaling via S1P1 receptor and Gαi/o evokes augmentation of capsaicin-induced ionic currents in mouse sensory neurons. Mol Pain 2014; 10:74. [PMID: 25431213 PMCID: PMC4280769 DOI: 10.1186/1744-8069-10-74] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 11/03/2014] [Indexed: 12/13/2022] Open
Abstract
The perception of painful thermal stimuli by sensory neurons is largely mediated by TRPV1. Upon tissue injury or inflammation, S1P is secreted by thrombocytes as part of an inflammatory cocktail, which sensitizes nociceptive neurons towards thermal stimuli. S1P acts on G-protein coupled receptors that are expressed in sensory neurons and sensitize TRPV1 channels towards thermal stimuli. In this study, the S1P mediated signaling pathway required for sensitization of TRPV1 channels was explored.The capsaicin induced peak inward current (ICAPS) of sensory neurons was significantly increased after S1P stimulation within minutes after application. The potentiation of ICAPS resulted from activation of Gαi through G-protein coupled receptors for S1P. Consequently, Gαi led to a signaling cascade, involving phosphoinositide-3-kinase (PI3K) and protein kinase C, which augmented ICAPS in nociceptive neurons. The S1P1 receptor agonist SEW2871 resulted in activation of the same signaling pathway and potentiation of ICAPS. Furthermore, the mitogen-activated protein kinase p38 was phosphorylated after S1P stimulation and inhibition of p38 signaling by SB203580 prevented the S1P-induced ICAPS potentiation. The current data suggest that S1P sensitized ICAPS through G-protein coupled S1P1 receptor activation of Gαi-PI3K-PKC-p38 signaling pathway in sensory neurons.
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Affiliation(s)
- Michiel Langeslag
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
| | - Serena Quarta
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
| | - Michael G Leitner
- />Department of Neurophysiology, Institute for Physiology and Pathophysiology, Philipps University of Marburg, Marburg, Germany
| | - Michaela Kress
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
| | - Norbert Mair
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
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Wang Z, Chen D, Zhang Z, Zhang R, An S, Yu L. Protease-activated receptor 4 activation increases the expression of calcitonin gene-related peptide mRNA and protein in dorsal root ganglion neurons. J Neurosci Res 2013; 91:1551-62. [PMID: 24105611 DOI: 10.1002/jnr.23280] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 12/12/2022]
Abstract
Accumulating evidence demonstrates that nociceptor activation evokes a rapid change in mRNA and protein levels of calcitonin gene-related peptide (CGRP) in dorsal root ganglion (DRG) neurons. Although the colocalization of CGRP and protease-activated receptor-4 (PAR4), a potent modulator of pain processing and inflammation, was detected in DRG neurons, the role of PAR4 activation in the expression of CGRP has not been investigated. In the present study, the expression of CGRP and activation (phosphorylation) of extracellular signal-regulated kinases 1 and 2 (ERK1/2) in rat DRG neurons were measured by immunofluorescence, real-time PCR, and Western blotting after AYPGKF-NH2 (selective PAR4-activating peptide; PAR4-AP) intraplantar injection or treatment of cultured DRG neurons. The expression of CGRP in cultured DRG neurons was also assessed after treatment with AYPGKF-NH2 with preaddition of PD98059 (an inhibitor for ERK1/2 pathway). Results showed that PAR4-AP intraplantar injection or treatment of cultured DRG neurons evoked significant increases in DRG cells displaying CGRP immunoreactivity and cytoplasmic and nuclear staining for phospho-ERK1/2 (p-ERK1/2). Percentages of total DRG neurons expressing both CGRP and PAR4 or p-ERK1/2 also increased significantly at 2 hr after PAR4-AP treatment. Real-time PCR and Western blotting showed that PAR4-AP treatment significantly increased expression of CGRP mRNA and protein levels in DRG neurons. The PAR4 activation-evoked CGRP expression both at mRNA and at protein levels was significantly inhibited after p-ERK1/2 was inhibited by PD98059. These results provide evidence that activation of PAR4 upregulates the expression of CGRP mRNA and protein levels in DRG neurons via the p-ERK1/2 signal pathway.
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Affiliation(s)
- Zhaojin Wang
- Department of Anatomy, Taishan Medical University, Shandong Province, Taian, China
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Donnerer J, Liebmann I. The Pain Pathway in the Rat following Noxious Thermal Stimulation: Effect of Morphine on pERK1/2 and TRPV1 at the Dorsal Horn Level, and on Hyperalgesia. Pharmacology 2013; 92:32-8. [DOI: 10.1159/000353141] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 05/17/2013] [Indexed: 12/11/2022]
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Different responses of galanin and calcitonin gene-related peptide to capsaicin stimulation on dorsal root ganglion neurons in vitro. ACTA ACUST UNITED AC 2013; 184:68-74. [PMID: 23499803 DOI: 10.1016/j.regpep.2013.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 02/08/2013] [Accepted: 03/03/2013] [Indexed: 11/20/2022]
Abstract
Both galanin (Gal) and calcitonin gene-related peptide (CGRP) are sensory neuropeptides which expressed in dorsal root ganglion (DRG) neurons and are involved in nociceptive processing. Capsaicin (CAP) influences nociceptive processing via influencing the expression of sensory neuropeptides in primary sensory neurons. However, little is known about the alterations of Gal and CGRP expression at the same condition stimulated by CAP. In the present study, primary cultured DRG neurons were used to determine the different responses of Gal and CGRP to CAP stimulation. DRG neurons were cultured for 48 hours and then exposed to CAP (2 μmol/L), capsazepine (CPZ) (2 μmol/L) plus CAP (2 μmol/L), or extracellular signal-regulated kinase 1/2 (ERK1/2) inhibitor PD98059 (10 μmol/L) plus CAP (2 μmol/L) for an additional 24hours. The DRG neurons were continuously exposed to culture media as a control. After that, the levels of Gal mRNA and CGRP mRNA of DRG neurons were determined using real time-PCR analysis. Gal and CGRP expression in situ was detected by an immunofluorescent labeling technique. The levels of phosphorylated-ERK1/2 (pERK1/2) protein were detected using a Western blot assay. The results showed that CAP evoked increases of Gal and its mRNA and decreases of CGRP and its mRNA in DRG neurons. Administration of either CPZ or PD98059 blocked the effects of CAP. These data indicate that Gal and CGRP shared different responses to CAP stimulation. Gal and CGRP may have different effects in nociceptive processing during neurogenic inflammation.
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Li Y, Liu G, Li H, Xu Y, Zhang H, Liu Z. Capsaicin-Induced Activation of ERK1/2 and Its Involvement in GAP-43 Expression and CGRP Depletion in Organotypically Cultured DRG Neurons. Cell Mol Neurobiol 2013; 33:433-41. [DOI: 10.1007/s10571-013-9909-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 01/09/2013] [Indexed: 12/19/2022]
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May D, Baastrup J, Nientit MR, Binder A, Schünke M, Baron R, Cascorbi I. Differential expression and functionality of TRPA1 protein genetic variants in conditions of thermal stimulation. J Biol Chem 2012; 287:27087-94. [PMID: 22665484 DOI: 10.1074/jbc.m112.341776] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The role of genetic modifications of the TRPA1 receptor has been well documented in inflammatory and neuropathic pain. We recently reported that the E179K variant of TRPA1 appears to be crucial for the generation of paradoxical heat sensation in pain patients. Here, we describe the consequences of the single amino acid exchange at position 179 in the ankyrin repeat 4 of human TRPA1. TRPA1 wild type Lys-179 protein expressed in HEK cells exhibited intact biochemical properties, inclusive trafficking into the plasma membrane, formation of large protein complexes, and the ability to be activated by cold. Additionally, a strong increase of Lys-179 protein expression was observed in cold (4 °C) and heat (49 °C)-treated cells. In contrast, HEK cells expressing the variant Lys-179 TRPA1 failed to get activated by cold possibly due to the loss of ability to interact with other proteins or other TRPA1 monomers during oligomerization. In conclusion, the detailed understanding of TRPA1 genetic variants might provide a fruitful strategy for future development of pain treatments.
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Affiliation(s)
- Denisa May
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein, Campus Kiel, 24105 Kiel, Germany
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Donnerer J, Liebmann I. Thermal Stimulation of Primary Sensory Neurons in the Rat Hind Paw: Effect of Morphine on ERK1/2 Phosphorylation, TRPV1 and TRPA1 Channel Expression. Pharmacology 2012; 90:298-306. [DOI: 10.1159/000343133] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 09/04/2012] [Indexed: 01/05/2023]
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Donnerer J, Liebmann I. Phosphorylation of ERK1/2 in dorsal root ganglia following sequential mustard oil and thermal stimulation of the rat hind paw. Pharmacology 2011; 89:7-12. [PMID: 22205121 DOI: 10.1159/000334933] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Accepted: 11/04/2011] [Indexed: 12/16/2022]
Abstract
The effect of a sequential stimulation by mustard oil and noxious heat or cold on the phosphorylation of ERK1/2 in sensory afferents was investigated. The stimuli were applied to the rat hind paw and phospho-ERK1/2 (p-ERK1/2) was measured by fluorescence-immunohistochemistry in the lumbar dorsal root ganglia (DRGs) neurons. All stimuli lead to a significant increase in the number of small size DRG cells displaying cytoplasmic staining for p-ERK1/2. The combination of mustard oil with cold significantly increased the number of cells with cytoplasmic staining above the level obtained with cold stimulus alone, however this was not observed with the combination of mustard oil and heat. Nuclear staining was weak and was found increased by mustard oil combined with cold stimulation. Mustard oil is known to activate TRPA1 and TRPV1 channels, heat TRPV1, and cold TRPA1 and TRPM8. The present findings shed new light on the DRG cell populations reacting with cytoplasmic and nuclear staining for p-ERK1/2 following sequential irritant chemical and thermal stimuli to the skin.
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Affiliation(s)
- Josef Donnerer
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria.
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