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Belgi A, Burnley JV, MacRaild CA, Chhabra S, Elnahriry KA, Robinson SD, Gooding SG, Tae HS, Bartels P, Sadeghi M, Zhao FY, Wei H, Spanswick D, Adams DJ, Norton RS, Robinson AJ. Alkyne-Bridged α-Conotoxin Vc1.1 Potently Reverses Mechanical Allodynia in Neuropathic Pain Models. J Med Chem 2021; 64:3222-3233. [PMID: 33724033 DOI: 10.1021/acs.jmedchem.0c02151] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Several Conus-derived venom peptides are promising lead compounds for the management of neuropathic pain, with α-conotoxins being of particular interest. Modification of the interlocked disulfide framework of α-conotoxin Vc1.1 has been achieved using on-resin alkyne metathesis. Although introduction of a metabolically stable alkyne motif significantly disrupts backbone topography, the structural modification generates a potent and selective GABAB receptor agonist that inhibits Cav2.2 channels and exhibits dose-dependent reversal of mechanical allodynia in a behavioral rat model of neuropathic pain. The findings herein support the hypothesis that analgesia can be achieved via activation of GABABRs expressed in dorsal root ganglion (DRG) sensory neurons.
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Affiliation(s)
- Alessia Belgi
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - James V Burnley
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Christopher A MacRaild
- Medicinal Chemistry, Monash Institute of Pharmaceutical Science, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Sandeep Chhabra
- Medicinal Chemistry, Monash Institute of Pharmaceutical Science, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Khaled A Elnahriry
- Medicinal Chemistry, Monash Institute of Pharmaceutical Science, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Samuel D Robinson
- Medicinal Chemistry, Monash Institute of Pharmaceutical Science, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Simon G Gooding
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Han-Shen Tae
- Illawarra Health & Medical Research Institute (IHMRI), University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Peter Bartels
- Illawarra Health & Medical Research Institute (IHMRI), University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Mahsa Sadeghi
- Illawarra Health & Medical Research Institute (IHMRI), University of Wollongong, Wollongong, New South Wales 2522, Australia
| | | | | | - David Spanswick
- NeuroSolutions Ltd., Coventry CV4 7AL, U.K
- Biomedicine Discovery Institute and the Department of Physiology, Monash University, Clayton, Victoria 3800, Australia
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, U.K
| | - David J Adams
- Illawarra Health & Medical Research Institute (IHMRI), University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Raymond S Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Science, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- ARC Centre for Fragment-Based Design, Monash University, Parkville, Victoria 3052, Australia
| | - Andrea J Robinson
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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Sugimoto J, Satoyoshi H, Takahata K, Muraoka S. Fabry disease-associated globotriaosylceramide induces mechanical allodynia via activation of signaling through proNGF-p75 NTR but not mature NGF-TrkA. Eur J Pharmacol 2021; 895:173882. [PMID: 33482180 DOI: 10.1016/j.ejphar.2021.173882] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 01/14/2023]
Abstract
Fabry disease (FD) is an X-linked metabolic storage disorder arising from the deficiency of lysosomal α-galactosidase A, which leads to the gradual accumulation of glycosphingolipids, mainly globotriaosylceramide (Gb3), throughout the body. Pain in the extremities is an early symptom of FD; however, the underlying pathophysiological mechanisms remain unknown. α-Galactosidase A knockout animals exhibit nociceptive behaviors, with enhanced expression levels of several ion channels. These characteristics are observed in animals treated with nerve growth factor (NGF). Here, we aimed to elucidate the potential of NGF signaling as a cause of FD-associated pain, using intraplantar Gb3-treated mice displaying mechanical allodynia. Treatment with a neutralizing antibody against a precursor of NGF (proNGF) or its receptor, p75 neurotrophin receptor (p75NTR), resulted in the recovery from Gb3-induced pain. Conversely, anti-NGF and anti-tropomyosin receptor kinase A antibodies failed to exert analgesic effects. Gb3 injection had no effects on the expression levels of proNGF and p75NTR in the plantar skin and dorsal root ganglia, suggesting that Gb3 activates the pain pathway, possibly mediated through functional up-regulation of proNGF-p75NTR signaling. Furthermore, by pharmacological approaches using a protein kinase A (PKA) inhibitor and a cholesterol-removing agent, we found that p75NTR-phosphorylating PKA and lipid rafts for phosphorylated p75NTR translocation were required for Gb3-induced pain. These results suggest that acute exposure to Gb3 induces mechanical allodynia via activation of the proNGF-p75NTR pathway, which involves lipid rafts and PKA. Our findings provide new pathological insights into FD-associated pain, and suggest the need to develop therapeutic interventions targeting proNGF-p75NTR signaling.
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Affiliation(s)
- Junya Sugimoto
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan
| | - Hiroshi Satoyoshi
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan
| | - Kazue Takahata
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan.
| | - Shizuko Muraoka
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan
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Wang P, Tu K, Cao P, Yang Y, Zhang H, Qiu XT, Zhang MM, Wu XJ, Yang H, Chen T. Antibiotics-induced intestinal dysbacteriosis caused behavioral alternations and neuronal activation in different brain regions in mice. Mol Brain 2021; 14:49. [PMID: 33676528 PMCID: PMC7937204 DOI: 10.1186/s13041-021-00759-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 02/19/2021] [Indexed: 11/19/2022] Open
Abstract
Antibiotics affect gut microbial composition, leading to Gut-Brain-Axis imbalance and neurobehavioral changes. However, the intestinal dysbacteriosis associated behavior changes are not consistently reported. It is not clear whether these changes are transient or permanent. The neuroprotective effect of probiotics against intestinal dysbacteriosis induced alternations needs to be determined either. In the present study, oral antibiotic mixture including Ampicillin, Streptomycin, and Clindamycin was utilized to induce intestinal dysbacteriosis in mice. Antibiotics application triggered mechanical allodynia in von frey test and spontaneous pain in open field test. It also resulted in increased anxiety and depressive-like behaviors and damaged spatial memory performance. After application of probiotics, the mechanical allodynia and spontaneous pain were alleviated significantly. The anxiety behaviors, depressive-like behaviors and recognitive performance were ameliorative as well. By using Fos protein as a marker, it is found that the sensory, emotion and memory related brain regions were activated in mice with intestinal dysbacteriosis. Our study is not only helpful for enriching our basic knowledge for understanding the changed pain responses and related brain disorders in antibiotics-induced dysbacteriosis mice, but also beneficial for providing a more comprehensive mechanistic explanation for the regulation of antibiotics and probiotics on gut microbiota and relevant alternations in animal neurological behaviors.
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Affiliation(s)
- Pan Wang
- Institute of Medical Research, Northwestern Polytechnical University, Xi`an, Shaanxi, 710072, P. R. China
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Ke Tu
- Department of Anesthesiology, General Hospital of Tibet Military District, Lhasa, Tibet, 850007, P. R. China
| | - Peng Cao
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Yuefan Yang
- Department of Biomedical Engineering, The Air Force Medical University, Xi`an, China
| | - Hao Zhang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi`an, China
| | - Xin-Tong Qiu
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Ming-Ming Zhang
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Xiao-Jun Wu
- Department of Neurosurgery, Fudan University Shanghai Cancer Center, 270 Dongan Road, Xuhui, 200032, Shanghai, China.
| | - Hui Yang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi`an, China.
| | - Tao Chen
- Institute of Medical Research, Northwestern Polytechnical University, Xi`an, Shaanxi, 710072, P. R. China.
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, China.
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Tian Y, Onodera T, Terkawi MA, Iwasaki K, Hishimura R, Liang D, Miyazaki T, Iwasaki N. Local Administration of Low-Dose Nerve Growth Factor Antibody Reduced Pain in a Rat Osteoarthritis Model. Int J Mol Sci 2021; 22:ijms22052552. [PMID: 33806315 PMCID: PMC7962042 DOI: 10.3390/ijms22052552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/22/2021] [Accepted: 02/26/2021] [Indexed: 11/23/2022] Open
Abstract
Systemic injection of a nerve growth factor (NGF) antibody has been proven to have a significant relevance in relieving osteoarthritis (OA) pain, while its adverse effects remain a safety concern for patients. A local low-dose injection is thought to minimize adverse effects. In this study, OA was induced in an 8-week-old male Sprague–Dawley (SD) rat joint by monoiodoacetate (MIA) injection for 2 weeks, and the effect of weekly injections of low-dose (1, 10, and 100 µg) NGF antibody or saline (control) was evaluated. Behavioral tests were performed, and at the end of week 6, all rats were sacrificed and their knee joints were collected for macroscopic and histological evaluations. Results showed that 100 µg NGF antibody injection relieved pain in OA rats, as evidenced from improved weight-bearing performance but not allodynia. In contrast, no significant differences were observed in macroscopic and histological scores between rats from different groups, demonstrating that intra-articular treatment does not worsen OA progression. These results suggest that local administration yielded a low effective NGF antibody dose that may serve as an alternative approach to systemic injection for the treatment of patients with OA.
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Affiliation(s)
- Yuan Tian
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
| | - Tomohiro Onodera
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 060-0808, Japan
- Correspondence: ; Tel.: +81-11-706-5935; Fax: +81-11-706-6054
| | - Mohamad Alaa Terkawi
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 060-0808, Japan
| | - Koji Iwasaki
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
| | - Ryosuke Hishimura
- Department of Orthopedic Surgery, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo 060-8648, Japan;
| | - Dawei Liang
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
| | - Takuji Miyazaki
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
| | - Norimasa Iwasaki
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nish-7, Kita-ku, Sapporo 060-8638, Japan; (Y.T.); (M.A.T.); (K.I.); (D.L.); (T.M.); (N.I.)
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 060-0808, Japan
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Cui J, Fan J, Li H, Zhang J, Tong J. Neuroprotective potential of fisetin in an experimental model of spinal cord injury: via modulation of NF-κB/IκBα pathway. Neuroreport 2021; 32:296-305. [PMID: 33470764 PMCID: PMC7886366 DOI: 10.1097/wnr.0000000000001596] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 12/08/2020] [Indexed: 01/19/2023]
Abstract
AIM To evaluate neuroprotective efficacy of fisetin against the experimental model of spinal cord injury (SCI). MATERIALS AND METHODS SCI was induced in male Sprague-Dawley rats by placing an aneurysm clip extradurally. Rats were treated either with vehicle or fisetin for 28 days after SCI. RESULTS Treatment with fisetin significantly attenuated SCI-induced alternations in mechano-tactile and thermal allodynia, hyperalgesia and nerve conduction velocities. SCI-induced upregulated tumor necrosis factor-alpha, interleukins, inducible nitric oxide synthase, cyclooxygenase-II, Bcl-2-associated X protein and caspase-3 mRNA expressions in the spinal cord and these were markedly reduced by fisetin. Spinal nuclear factor kappa B and nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor-alpha protein levels were also significantly downregulated by fisetin. Hematoxylin and eosin staining of spinal cord suggested that fisetin significantly ameliorated histological aberrations such as neuronal degeneration, necrosis and inflammatory infiltration induced in it. CONCLUSION Fisetin exerts neuroprotection via modulation of nuclear factor kappa B/nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor-alpha pathway by inhibiting release of inflammatory mediators (inducible nitric oxide synthase and cyclooxygenase-II), proinflammatory cytokines (tumor necrosis factor-alpha and interleukins), apoptotic mediators (Bcl-2-associated X protein and caspase-3).
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Affiliation(s)
| | - Jingshi Fan
- Department of Pathology, Baoding First Central Hospital, Baoding, Hebei Province, China
| | | | - Jinku Zhang
- Department of Pathology, Baoding First Central Hospital, Baoding, Hebei Province, China
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Santos SMD, de Oliveira Junior PC, de Matos Balsalobre N, Kassuya CAL, Cardoso CAL, Pereira ZV, Silva RMMF, Formagio ASN. Variation in essential oil components and anti-inflammatory activity of Allophylus edulis leaves collected in central-western Brazil. J Ethnopharmacol 2021; 267:113495. [PMID: 33091493 DOI: 10.1016/j.jep.2020.113495] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE An infusion obtained from the leaves of "chal-chal" (Allophylus edulis Radlk.) is used for popular treatment of intestinal disorders and as an anti-inflammatory throat treatment. Because of the anti-inflammatory medicinal folk use, a previous work reported scientific research confirming the anti-inflammatory activity of A. edulis essential oil collected in Dourados, MS, Brazil, in March 2015. AIM OF THE STUDY The aim of this study was to evaluate the variation in the chemical profile of the essential oil of A. edulis plants collected in Dourados (EOAE-D) and Bonito (EOAE-B), two cities in Mato Grosso do Sul State, Brazil. Additionally, we evaluated the anti-inflammatory effects of the essential oil, as well as that of the major compounds (caryophyllene oxide and α-zingiberene), in experimental in vivo models of inflammation in mice. MATERIALS AND METHODS Leaves were collected from plants at both sites in July 2018. The composition of the essential oil (EOAE-D and EOAE-B) was determined by GC/MS, and major compounds (caryophyllene oxide and α-zingiberene) were isolated and identified by chromatographic methods and NMR spectroscopy. Anti-inflammatory capacities were assessed using two classical models of inflammatory models, carrageenan- and CFA-induced paw inflammation (mechanical and thermal hyperalgesia). RESULTS Both EOAE-D and EOAE-B showed sesquiterpenes as a major constituent, namely, caryophyllene oxide (29.5%) and α-zingiberene (45.0%), respectively. In tests, EOAE, caryophyllene oxide and α-zingiberene-induced antiedematogenic and antihyperalgesic effects were found in the different utilized models. CONCLUSIONS The results indicate that samples from the two cities differed in chemical composition but not in their anti-inflammatory and antihyperalgesic effects. This finding corroborates the use of A. edulis as a medicinal plant and indicates its potential in the therapy of inflammatory conditions.
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Affiliation(s)
- Sidney Mariano Dos Santos
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Pedro Cruz de Oliveira Junior
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Natália de Matos Balsalobre
- Faculty of Health Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Candida Aparecida Leite Kassuya
- Faculty of Health Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Claudia Andrea Lima Cardoso
- State University of Mato Grosso do Sul, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Zefa Valdivina Pereira
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Rosilda Mara Mussury Franco Silva
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
| | - Anelise Samara Nazari Formagio
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil; Faculty of Health Sciences, Federal University of Grande Dourados, University City of Dourados, Dourados-Itahum Highway, 79804-970, Dourados, MS, Brazil.
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Chang C, Liu HK, Yeh CB, Yang ML, Liao WC, Liu CH, Tseng TJ. Cross-Talk of Toll-Like Receptor 5 and Mu-Opioid Receptor Attenuates Chronic Constriction Injury-Induced Mechanical Hyperalgesia through a Protein Kinase C Alpha-Dependent Signaling. Int J Mol Sci 2021; 22:1891. [PMID: 33673008 PMCID: PMC7918001 DOI: 10.3390/ijms22041891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/30/2021] [Accepted: 02/10/2021] [Indexed: 12/11/2022] Open
Abstract
Recently, Toll-like receptors (TLRs), a family of pattern recognition receptors, are reported as potential modulators for neuropathic pain; however, the desired mechanism is still unexplained. Here, we operated on the sciatic nerve to establish a pre-clinical rodent model of chronic constriction injury (CCI) in Sprague-Dawley rats, which were assigned into CCI and Decompression groups randomly. In Decompression group, the rats were performed with nerve decompression at post-operative week 4. Mechanical hyperalgesia and mechanical allodynia were obviously attenuated after a month. Toll-like receptor 5 (TLR5)-immunoreactive (ir) expression increased in dorsal horn, particularly in the inner part of lamina II. Additionally, substance P (SP) and isolectin B4 (IB4)-ir expressions, rather than calcitonin-gene-related peptide (CGRP)-ir expression, increased in their distinct laminae. Double immunofluorescence proved that increased TLR5-ir expression was co-expressed mainly with IB4-ir expression. Through an intrathecal administration with FLA-ST Ultrapure (a TLR5 agonist, purified flagellin from Salmonella Typhimurium, only the CCI-induced mechanical hyperalgesia was attenuated dose-dependently. Moreover, we confirmed that mu-opioid receptor (MOR) and phospho-protein kinase Cα (pPKCα)-ir expressions but not phospho-protein kinase A RII (pPKA RII)-ir expression, increased in lamina II, where they mostly co-expressed with IB4-ir expression. Go 6976, a potent protein kinase C inhibitor, effectively reversed the FLA-ST Ultrapure- or DAMGO-mediated attenuated trend towards mechanical hyperalgesia by an intrathecal administration in CCI rats. In summary, our current findings suggest that nerve decompression improves CCI-induced mechanical hyperalgesia that might be through the cross-talk of TLR5 and MOR in a PKCα-dependent manner, which opens a novel opportunity for the development of analgesic therapeutics in neuropathic pain.
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Affiliation(s)
- Ching Chang
- Department of Anatomy, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan; (C.C.); (H.-K.L.); (M.-L.Y.); (W.-C.L.); (C.-H.L.)
| | - Hung-Kai Liu
- Department of Anatomy, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan; (C.C.); (H.-K.L.); (M.-L.Y.); (W.-C.L.); (C.-H.L.)
| | - Chao-Bin Yeh
- Department of Emergency Medicine, Chung Shan Medical University Hospital, 40201 Taichung, Taiwan;
- Department of Emergency Medicine, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan
| | - Ming-Lin Yang
- Department of Anatomy, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan; (C.C.); (H.-K.L.); (M.-L.Y.); (W.-C.L.); (C.-H.L.)
- Department of Medical Education, Chung Shan Medical University Hospital, 40201 Taichung, Taiwan
| | - Wen-Chieh Liao
- Department of Anatomy, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan; (C.C.); (H.-K.L.); (M.-L.Y.); (W.-C.L.); (C.-H.L.)
- Department of Medical Education, Chung Shan Medical University Hospital, 40201 Taichung, Taiwan
| | - Chiung-Hui Liu
- Department of Anatomy, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan; (C.C.); (H.-K.L.); (M.-L.Y.); (W.-C.L.); (C.-H.L.)
- Department of Medical Education, Chung Shan Medical University Hospital, 40201 Taichung, Taiwan
| | - To-Jung Tseng
- Department of Anatomy, School of Medicine, Chung Shan Medical University, 40201 Taichung, Taiwan; (C.C.); (H.-K.L.); (M.-L.Y.); (W.-C.L.); (C.-H.L.)
- Department of Medical Education, Chung Shan Medical University Hospital, 40201 Taichung, Taiwan
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Boccella S, Guida F, Iannotta M, Iannotti FA, Infantino R, Ricciardi F, Cristiano C, Vitale RM, Amodeo P, Marabese I, Belardo C, de Novellis V, Paino S, Palazzo E, Calignano A, Di Marzo V, Maione S, Luongo L. 2-Pentadecyl-2-oxazoline ameliorates memory impairment and depression-like behaviour in neuropathic mice: possible role of adrenergic alpha2- and H3 histamine autoreceptors. Mol Brain 2021; 14:28. [PMID: 33557888 PMCID: PMC7871413 DOI: 10.1186/s13041-020-00724-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/28/2020] [Indexed: 12/20/2022] Open
Abstract
Neuropathic pain (NP) remains an untreatable disease due to the complex pathophysiology that involves the whole pain neuraxis including the forebrain. Sensory dysfunctions such as allodynia and hyperalgesia are only part of the symptoms associated with neuropathic pain that extend to memory and affectivity deficits. The development of multi-target molecules might be a promising therapeutic strategy against the symptoms associated with NP. 2-pentadecyl-2-oxazoline (PEA-OXA) is a plant-derived agent, which has shown effectiveness against chronic pain and associated neuropsychiatric disorders. The molecular mechanisms by which PEA-OXA exerts its effects are, however, only partially known. In the current study, we show that PEA-OXA, besides being an alpha2 adrenergic receptor antagonist, also acts as a modulator at histamine H3 receptors, and report data on its effects on sensory, affective and cognitive symptoms associated with the spared nerve injury (SNI) model of neuropathic pain in mice. Treatment for 14 days with PEA-OXA after the onset of the symptoms associated with neuropathic pain resulted in the following effects: (i) allodynia was decreased; (ii) affective/cognitive impairment associated with SNI (depression, spatial, and working memories) was counteracted; (iii) long-term potentiation in vivo in the lateral entorhinal cortex-dentate gyrus (perforant pathway, LPP) was ameliorated, (iv) hippocampal glutamate, GABA, histamine, norepinephrine and dopamine level alterations after peripheral nerve injury were reversed, (v) expression level of the TH positive neurons in the Locus Coeruleus were normalized. Thus, a 16-day treatment with PEA-OXA alleviates the sensory, emotional, cognitive, electrophysiological and neurochemical alterations associated with SNI-induced neuropathic pain.
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Affiliation(s)
- Serena Boccella
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Francesca Guida
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Monica Iannotta
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Fabio Arturo Iannotti
- Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
| | - Rosmara Infantino
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Flavia Ricciardi
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Claudia Cristiano
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy
| | | | - Pietro Amodeo
- Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
| | - Ida Marabese
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Carmela Belardo
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Vito de Novellis
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Salvatore Paino
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Enza Palazzo
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
| | - Antonio Calignano
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy
| | - Vincenzo Di Marzo
- Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Université Laval, Quebec City, Canada
| | - Sabatino Maione
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
- IRCSS, Neuromed, Pozzilli, Italy
| | - Livio Luongo
- Department of Experimental Medicine, Pharmacology Division, University of Campania "L. Vanvitelli", 80138, Naples, Italy.
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy.
- IRCSS, Neuromed, Pozzilli, Italy.
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Dias Quintão JL, Reis Gonzaga AC, Galdino G, Lima Romero TR, Silva J, Lemos V, Campolina-Silva GH, Aparecida de Oliveira C, Bohórquez Mahecha G, Gama Duarte I. TNF-α, CXCL-1 and IL-1 β as activators of the opioid system involved in peripheral analgesic control in mice. Eur J Pharmacol 2021; 896:173900. [PMID: 33545158 DOI: 10.1016/j.ejphar.2021.173900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/05/2021] [Accepted: 01/19/2021] [Indexed: 01/06/2023]
Abstract
Tissue injury results in the release of inflammatory mediators, including a cascade of nociceptive substances, which contribute to development of hyperalgesia. In addition, during this process endogenous analgesic substances are also peripherally released with the aim of controlling the hyperalgesia. Thus, the present study aimed to investigate whether inflammatory mediators TNF-α, IL-1β, CXCL1, norepinephrine (NE) and prostaglandin E2 (PGE2) may be involved in the deflagration of peripheral endogenous modulation of inflammatory pain by activation of the opioid system. Thus, male Swiss mice and the paw withdrawal test were used. All substances were injected by the intraplantar route. Carrageenan, TNF-α, CXCL-1, IL1-β, NE and PGE2 induced hyperalgesia. Selectives μ (clocinamox), δ (naltrindole) and κ (norbinaltorphimine, nor-BNI) and non-selective (naloxone) opioid receptor antagonists potentiated the hyperalgesia induced by carrageenan, TNF-α, CXCL-1 and IL1-β. In contrast, when the enzyme N-aminopeptidase involved in the degradation of endogenous opioid peptides was inhibited by bestatin, the hyperalgesia was significantly reduced. In addition, the western blotting assay indicated that the expression of the opioid δ receptor was increased after intraplantar injection of carrageenan. The data obtained in this work corroborate the hypothesis that TNF-α, CXCL-1 and IL-β cause, in addition to hyperalgesia, the release of endogenous substances such as opioid peptides, which in turn exert endogenous control over peripheral inflammatory pain.
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Affiliation(s)
- Jayane Laís Dias Quintão
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - Amanda Cristina Reis Gonzaga
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - Giovane Galdino
- Motricity Sciences Institute, Federal University of Alfenas, Minas Gerais, Brazil
| | - Thiago Roberto Lima Romero
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - JosianeFernandes Silva
- Department of Physiology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - VirgíniaSoares Lemos
- Department of Physiology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - Gabriel Henrique Campolina-Silva
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - Cleida Aparecida de Oliveira
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - GermánArturo Bohórquez Mahecha
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil
| | - IgorDimitri Gama Duarte
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627, 31.270-100, Belo Horizonte, Brazil.
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Yoshimoto T, Sakurai H, Ohmichi Y, Ohmichi M, Morimoto A, Ushida T, Sato J. Changes in cardiovascular parameters in rats exposed to chronic widespread mechanical allodynia induced by hind limb cast immobilization. PLoS One 2021; 16:e0245544. [PMID: 33465131 PMCID: PMC7815128 DOI: 10.1371/journal.pone.0245544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/30/2020] [Indexed: 11/19/2022] Open
Abstract
To elucidate the relationship between chronic pain conditions with cast immobilization and autonomic function, we investigated the functional changes of the autonomic nervous system in conscious rats with chronic post-cast pain (CPCP) induced by a two-week cast immobilization of one hind limb. We telemetrically examined the time courses of systolic arterial blood pressure (SBP), heart rate (HR), and the middle-frequency (MF) component obtained from the power spectral analysis of SBP variability as a vasomotor sympathetic index. We also investigated the baroreflex sensitivity to phentolamine, an α-adrenoceptor antagonist, and the SBP and HR responses to a low ambient temperature (LT; 9.0 ± 0.2°C) exposure, a sympathetic stimulant. Rats exposed to cast immobilization exhibited mechanical allodynia lasting for at least 10 weeks after cast removal in the calf area (skin and muscle) of the bilateral hind limbs. Under resting conditions, the SBP, HR, and MF components were significantly increased during cast immobilization (all p < 0.001). Following cast removal, these parameters gradually decreased and within 1 week reached lower than baseline levels, lasting for over 10 weeks. Phentolamine administration (10 mg/kg, intraperitoneally) significantly decreased the SBP before and during cast immobilization (before, p < 0.001; during, p = 0.001) but did not lower the SBP after cast removal. The baroreflex gain after phentolamine administration, calculated as the HR increase divided by the SBP reduction, was significantly increased after cast removal (p = 0.002). The SBP increase on LT exposure was significantly greater after cast removal than that before cast immobilization, suggesting hypersensitivity to sympathetic neurotransmitters. These results revealed that, in the CPCP model, sympathetic activation was augmented during cast immobilization, which then decreased after cast removal and remained below normal levels with persisting pain behaviors. Additionally, the responsiveness of the autonomic nervous system was impaired in the CPCP model.
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Affiliation(s)
- Takahiko Yoshimoto
- Department of Hygiene, Public Health and Preventive Medicine, Showa University School of Medicine, Shinagawa, Tokyo, Japan
| | - Hiroki Sakurai
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
- Faculty of Health Sciences, Tokoha University, Hamamatsu, Japan
| | - Yusuke Ohmichi
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
- Department of Anatomy, Aichi Medical University, Nagakute, Aichi, Japan
| | - Mika Ohmichi
- Department of Anatomy, Aichi Medical University, Nagakute, Aichi, Japan
| | - Atsuko Morimoto
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
| | - Takahiro Ushida
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
| | - Jun Sato
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
- Department of Physical Therapy, College of Life and Health Sciences, Chubu University, Kasugai, Japan
- * E-mail:
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Li T, Wang T, Wang L, Liu R, Zhang L, Zhai R, Fu F. Antinociceptive effects of rotigotine-loaded microspheres and its synergistic interactions with analgesics in inflammatory pain in rats. Eur J Pharmacol 2021; 891:173693. [PMID: 33160937 DOI: 10.1016/j.ejphar.2020.173693] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 10/16/2020] [Accepted: 10/26/2020] [Indexed: 01/24/2023]
Abstract
Rotigotine-loaded microspheres (RoMS) are sustained-release formulations with prolonged anti-Parkinson's effects. Given that pain is a non-motor symptom of Parkinson's disease, this study investigated the antinociceptive effects of RoMS and their synergistic effects with analgesics on inflammatory pain. A model of inflammatory pain was prepared by intraplantarly injecting male Sprague-Dawley rats with carrageenan. The antinociceptive effects of RoMS, acetaminophen, and tramadol, both alone and in combination, were evaluated using the hind paw withdrawal latency in the hot plate test and Randall-Selitto test. The rotigotine concentrations in serum and tissues were assayed using ultra-performance liquid chromatography-tandem mass spectrometry. Isobolographic analysis was performed to evaluate the nature of the interactions of RoMS with acetaminophen or tramadol. The results showed that hind paw withdrawal latency to thermal and mechanical stimuli was significantly increased on day 3 and 7 after administered RoMS. Rotigotine could be detected in serum and tissues 3 and 7 days after an intramuscular injection of RoMS. However, the rotigotine concentration fell the detection limit of the assay on day 14 after administration. RoMS produced synergistic antinociceptive effects in the inflammatory pain model when RoMS is combined with acetaminophen or tramadol. These findings suggest that RoMS can relieve inflammatory pain in rats. Furthermore, the combination of RoMS with acetaminophen or tramadol produces synergistic antinociception, which may be clinically worthy because combination therapies may reduce the drug doses required for antinociception.
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Affiliation(s)
- Ting Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China
| | - Tian Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China
| | - Linlin Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China
| | - Rongxia Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China
| | - Leiming Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China
| | - Rong Zhai
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China
| | - Fenghua Fu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, PR China; State Key Laboratory of Long-acting and Targeting Drug Delivery Technologies, Luye Pharma Group Ltd., Yantai, Shandong, 264003, PR China.
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Ricardo Carvalho VP, Figueira da Silva J, Buzelin MA, Antônio da Silva Júnior C, Carvalho Dos Santos D, Montijo Diniz D, Binda NS, Borges MH, Senna Guimarães AL, Rita Pereira EM, Gomez MV. Calcium channels blockers toxins attenuate abdominal hyperalgesia and inflammatory response associated with the cerulein-induced acute pancreatitis in rats. Eur J Pharmacol 2021; 891:173672. [PMID: 33190801 DOI: 10.1016/j.ejphar.2020.173672] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 11/26/2022]
Abstract
Agents that modulate the activity of high-voltage gated calcium channels (HVCCs) exhibit experimentally and clinically significant effect by relieving visceral pain. Among these agents, the toxins Phα1β and ω-conotoxin MVIIA effectively reduce chronic pain in rodent models. The molecular mechanisms underlying the chronic pain associated with acute pancreatitis (AP) are poorly understood. Hypercalcemia is a risk factor; the role of cytosolic calcium is considered to be a modulator of pancreatitis. Blockade of Ca2+ signals may be useful as a prophylactic treatment of pancreatitis. We explored the pathophysiological roles of three peptide toxins: Phα1β and its recombinant form CTK 01512-2-blockers of TRPA1 receptor and HVCCs and ω-conotoxin MVIIA, a specific blocker of N-type calcium channels in cerulein-induced AP. Cerulein injection elicits AP in rats, evidenced by an increase in hyperalgesic pain, inflammatory infiltration, amylase and lipase secretion, and reactive oxygen species, TNF-α, and p65 NF-κB levels. These effects of cerulein-induced AP were abolished by Phα1β and its recombinant form CTK 01512-2, whereas ω-conotoxin MVIIA had no effect on the induced increase in pancreatic enzyme secretion. Our results demonstrate that Phα1β and CTK 01512-2 toxins-antagonists of HVCCs and TRPA1 receptor presented an effective response profile, in the control of nociception and inflammatory process in the AP model in rats, without causing changes in spontaneous locomotion of the rats.
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Affiliation(s)
| | - Juliana Figueira da Silva
- Nucleo de Pós-graduação, Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - Marcelo Araújo Buzelin
- Nucleo de Pós-graduação, Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | | | - Duana Carvalho Dos Santos
- Nucleo de Pós-graduação, Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - Danuza Montijo Diniz
- Nucleo de Pós-graduação, Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - Nancy Scardua Binda
- Laboratório de Farmacologia, Departamento de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | | | - André Luiz Senna Guimarães
- Programa de Pós-graduação em Ciências da Saúde, Universidade Estadual de Montes Claros, Montes Claros, MG, Brazil
| | - Elizete Maria Rita Pereira
- Nucleo de Pós-graduação, Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - Marcus Vinicius Gomez
- Nucleo de Pós-graduação, Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil.
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Zhang Z, Yao Z, Wu K, Zhang T, Xing C, Xing XL. Resveratrol rescued the pain related hypersensitivity for Cntnap2-deficient mice. Eur J Pharmacol 2021; 891:173704. [PMID: 33137333 DOI: 10.1016/j.ejphar.2020.173704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/27/2020] [Accepted: 10/28/2020] [Indexed: 12/01/2022]
Abstract
Contactin-associated protein-like 2 (CNTNAP2 or CASPR2) is a neuronal transmembrane protein of the neurexin superfamily which is correlated with pain related hypersensitivity. Recent results indicated that the hyperactive phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signaling pathway may be a promising therapeutic target for pain-related hypersensitivity in patients with dysfunction of CNTNAP2. Resveratrol is one of the most widely studied polyphenols with several beneficial properties. In the present study, we investigated the effects of resveratrol on the pain related hypersensitivity. And we found that the up-regulated phosphorylation of S6 could be suppressed by resveratrol. The nocifensive behavior duration time to heat and chemical algogens stimulation in Cntnap2-deficiency (Cntnap2-/-) mice could be attenuated by resveratrol. Our results indicated that resveratrol could rescue the pain related hypersensitivity for Cntnap2-/- mice may be via mTOR signaling pathway.
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Affiliation(s)
- Zaiqi Zhang
- Hunan Provincial Key Laboratory for Dong Medicine, Hunan University of Medicine, Huaihua 418000, Hunan, PR China
| | - Zhiyong Yao
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua 418000, Hunan, PR China
| | - Kunyang Wu
- Zhejiang Center for Disease Control and Prevention, Hangzhou 310000, Zhejiang, PR China
| | - Ti Zhang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua 418000, Hunan, PR China
| | - Chaoqun Xing
- The First Affiliated Hospital of Hunan University of Medicine, Huaihua 418000, Hunan, PR China.
| | - Xiao-Liang Xing
- Hunan Provincial Key Laboratory for Dong Medicine, Hunan University of Medicine, Huaihua 418000, Hunan, PR China; Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua 418000, Hunan, PR China.
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Zhang X, Xia L, Xie A, Liao O, Ju F, Zhou Y. Low concentration of Bupivacaine ameliorates painful diabetic neuropathy by mediating miR-23a/PDE4B axis in microglia. Eur J Pharmacol 2021; 891:173719. [PMID: 33144067 DOI: 10.1016/j.ejphar.2020.173719] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 11/16/2022]
Abstract
Bupivacaine (Bup) has a certain research basis in pain-related diseases, but it has not been studied in painful diabetic neuropathy. In this study, we investigated the role of Bupivacaine in painful diabetic neuropathy. Mouse model with painful diabetic neuropathy was established, and then treated with different concentrations of Bupivacaine. The blood glucose level in the tail vein and the changes in body weight was measured. The mechanical allodynia, thermal hyperalgesia and thermal allodynia was assessed by pain behavioral tests. Microglia were treated with high glucose (HG) and different concentrations of Bupivacaine. The levels of inflammatory cytokines were detected by using Enzyme-linked immunosorbent assays. Dual luciferase reporter assay explored the relationship between miR-23a and phosphodiesterase 4 B (PDE4B). The results displayed that Bupivacaine ameliorated the mechanical allodynia, thermal hyperalgesia, and thermal allodynia in mice with painful diabetic neuropathy, and is more effective at low concentration. Moreover, low concentration of Bupivacaine inhibited inflammation and promoted miR-23a expression in mice with painful diabetic neuropathy and in microglia induced by HIGH GLUCOSE. Overexpression of miR-23a reduced the levels of inflammatory cytokines by down-regulating PDE4B expression. Knockdown of miR-23a reversed the inhibition effect of Bupivacaine on microglial inflammation. These results revealed that low concentration of Bupivacaine inhibited microglial inflammation through down-regulating PDE4B via miR-23a, thereby attenuated painful diabetic neuropathy.
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Affiliation(s)
- Xianjie Zhang
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang City, Sichuan Province, 618000, China
| | - Leqiang Xia
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang City, Sichuan Province, 618000, China.
| | - An Xie
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang City, Sichuan Province, 618000, China
| | - Ou Liao
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang City, Sichuan Province, 618000, China
| | - Feng Ju
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang City, Sichuan Province, 618000, China
| | - Yukai Zhou
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang City, Sichuan Province, 618000, China
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Déciga-Campos M, Villafán-Gutiérrez R, Espinosa-Juárez JV, Jaramillo-Morales OA, López-Muñoz FJ. Synergistic interaction between haloperidol and gabapentin in a model of neuropathic nociception in rat. Eur J Pharmacol 2021; 891:173702. [PMID: 33152334 DOI: 10.1016/j.ejphar.2020.173702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/27/2020] [Accepted: 10/28/2020] [Indexed: 11/30/2022]
Abstract
Preclinical studies have reported that sigma-1 receptor antagonists may have efficacy in neuropathic pain states. The sigma-1 receptor is a unique ligand-operated chaperone present in crucial areas for pain control, in both the peripheral and central nervous system. This study assesses the synergistic antihyperalgesic and antiallodynic effect of haloperidol, a sigma-1 antagonist, combined with gabapentin in rats with peripheral neuropathy. Wistar rats male were subjected to chronic constriction injury (CCI) of the sciatic nerve. The effects of systemic administration of gabapentin and the sigma-1 receptor antagonist, haloperidol, were examined at 11 days post-CCI surgery. An analysis of Surface of Synergistic Interaction was used to determine whether the combination's effects were synergistic. Twelve combinations showed various degrees of interaction in the antihyperalgesic and antiallodynic effects. In hyperalgesia, three combinations showed additive effects, four combinations showed supra-additive effects, and three combinations produced an effect limited by the maximum effect. In allodynia, five combinations showed additive effects, two combinations showed supra-additive effects, and five combinations produced antihyperalgesic effects limited by the maximum effect. These findings indicate that the administration of some specific combination of gabapentin and haloperidol can synergistically reduce nerve injury-induced allodynia and hyperalgesia. This suggests that the haloperidol-gabapentin combination can improve the antiallodynic and antihyperalgesic effects in a neuropathic pain model.
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Affiliation(s)
- Myrna Déciga-Campos
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Col. Santo Tomás, 11340, Ciudad de México, Mexico.
| | - Rodrigo Villafán-Gutiérrez
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Col. Santo Tomás, 11340, Ciudad de México, Mexico
| | - Josué Vidal Espinosa-Juárez
- Escuela de Cs. Químicas Sede Ocozocoautla, Universidad Autónoma de Chiapas, Ocozocoautla de Espinosa, Chiapas, C.P, 29140, Mexico.
| | - Osmar Antonio Jaramillo-Morales
- Departamento de Enfermería y Obstetricia. División de Ciencias de la Vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, Carretera Irapuato-Silao km. 9, El copal, complejo 2 de la DICIVA, C.P, 36500, Irapuato, Guanajuato, Mexico.
| | - Francisco Javier López-Muñoz
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados (Cinvestav), Sede Sur. Calzada de los Tenorios 235, Col. Granjas Coapa, Ciudad de México, Mexico.
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Wei H, Chen Z, Koivisto A, Pertovaara A. Spinal mechanisms contributing to the development of pain hypersensitivity induced by sphingolipids in the rat. Pharmacol Rep 2021; 73:672-679. [PMID: 33389723 PMCID: PMC7994220 DOI: 10.1007/s43440-020-00207-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 11/26/2020] [Accepted: 11/29/2020] [Indexed: 12/11/2022]
Abstract
Background Earlier studies show that endogenous sphingolipids can induce pain hypersensitivity, activation of spinal astrocytes, release of proinflammatory cytokines and activation of TRPM3 channel. Here we studied whether the development of pain hypersensitivity induced by sphingolipids in the spinal cord can be prevented by pharmacological inhibition of potential downstream mechanisms that we hypothesized to include TRPM3, σ1 and NMDA receptors, gap junctions and D-amino acid oxidase. Methods Experiments were performed in adult male rats with a chronic intrathecal catheter for spinal drug administrations. Mechanical nociception was assessed with monofilaments and heat nociception with radiant heat. N,N-dimethylsphingosine (DMS) was administered to induce pain hypersensitivity. Ononetin, isosakuranetin, naringenin (TRPM3 antagonists), BD-1047 (σ1 receptor antagonist), carbenoxolone (a gap junction decoupler), MK-801 (NMDA receptor antagonist) and AS-057278 (inhibitor of D-amino acid oxidase, DAAO) were used to prevent the DMS-induced hypersensitivity, and pregnenolone sulphate (TRPM3 agonist) to recapitulate hypersensitivity. Results DMS alone produced within 15 min a dose-related mechanical hypersensitivity that lasted at least 24 h, without effect on heat nociception. Preemptive treatments with ononetin, isosakuranetin, naringenin, BD-1047, carbenoxolone, MK-801 or AS-057278 attenuated the development of the DMS-induced hypersensitivity, but had no effects when administered alone. Pregnenolone sulphate (TRPM3 agonist) alone induced a dose-related mechanical hypersensitivity that was prevented by ononetin, isosakuranetin and naringenin. Conclusions Among spinal pronociceptive mechanisms activated by DMS are TRPM3, gap junction coupling, the σ1 and NMDA receptors, and DAAO.
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Affiliation(s)
- Hong Wei
- Department of Physiology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, POB 63, 00140, Helsinki, Finland
| | - Zuyue Chen
- Department of Physiology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, POB 63, 00140, Helsinki, Finland
| | - Ari Koivisto
- Research and Development, Orion Corporation, Orion Pharma, Tengströminkatu 8, POB 425, 20101, Turku, Finland
| | - Antti Pertovaara
- Department of Physiology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, POB 63, 00140, Helsinki, Finland.
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Ma C, Zhang M, Liu L, Zhang P, Liu D, Zheng X, Zhong X, Wang G. Low-dose cannabinoid receptor 2 agonist induces microglial activation in a cancer pain-morphine tolerance rat model. Life Sci 2021; 264:118635. [PMID: 33131746 DOI: 10.1016/j.lfs.2020.118635] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/11/2020] [Accepted: 10/18/2020] [Indexed: 12/15/2022]
Abstract
AIMS Cancer pain seriously affects the life quality of patients. Morphine is commonly used for cancer pain, but tolerance development limits its clinical administration. Central immune signaling is important in the development of cancer pain and morphine tolerance. Cannabinoid receptor 2 (CB2) inhibits cancer pain and morphine tolerance by regulating central immune signaling. In the present study, we investigated the mechanisms of central immune signaling involved in morphine tolerance inhibition by the CB2 agonist AM1241 in cancer pain treatment. MAIN METHODS Rats were implanted with tumor cells and divided into 4 groups: Vehicle (PBS), 0.07 μg AM1241, 0.03 μg AM1241, and AM630 (10 μg) + AM1241 (0.07 μg). All groups received morphine (20 μg/day, i.t.) for 8 days. AM630 (CB2 antagonist) was intrathecally injected 30 min before AM1241, and AM1241 was intrathecally injected 30 min before morphine. The spinal cord (SC) and dorsal root ganglion (DRG) were collected to determine the expression of Toll-like receptor 4 (TLR4), the p38 mitogen-activated protein kinase (MAPK), microglial markers, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α. KEY FINDINGS The expression of TLR4, p38 MAPK, microglial markers, IL-1β, and TNF-α was significantly higher in AM1241-pretreated groups than in the vehicle group (P < 0.05). No difference in microglial markers, IL-1β, and TNF-α expression was detected in the AM630 + AM1241 group compared with the vehicle group. SIGNIFICANCE Our results suggest that in a cancer pain-morphine tolerance model, an i.t. non-analgesic dose of AM1241 induces microglial activation and IL-1β TNF-α upregulation in SC and DRG via the CB2 receptor pathway.
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Affiliation(s)
- Chao Ma
- Department of Anesthesiology, The Fourth Hospital of Harbin Medical University, Harbin, China
| | - Mingyue Zhang
- Department of Anesthesiology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Li Liu
- Department of Anesthesiology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Pinyi Zhang
- Department of Anesthesiology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Dandan Liu
- Department of Anesthesiology, The Fourth Hospital of Harbin Medical University, Harbin, China
| | - Xiaoyu Zheng
- Department of Anesthesiology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Xuelai Zhong
- Department of Anesthesiology, The Fourth Hospital of Harbin Medical University, Harbin, China
| | - Guonian Wang
- Department of Anesthesiology, The Fourth Hospital of Harbin Medical University, Harbin, China; Pain Research Institute of Heilongjiang Academy of Medical Sciences, Harbin, China.
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Su DJ, Li LF, Wang SY, Yang Q, Wu YJ, Zhao MG, Yang L. Pra-C exerts analgesic effect through inhibiting microglial activation in anterior cingulate cortex in complete Freund's adjuvant-induced mouse model. Mol Pain 2021; 17:1744806921990934. [PMID: 33590786 PMCID: PMC7894694 DOI: 10.1177/1744806921990934] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/01/2020] [Accepted: 01/07/2021] [Indexed: 12/12/2022] Open
Abstract
Chronic pain is highly prevalent worldwide and severely affects daily lives of patients and family members. Praeruptorin C (Pra-C) is a main active ingredient derived from Peucedanum praeruptorum Dunn, traditionally used as antibechic, anti-bronchitis and anti-hypertension drug. Here, we evaluated the effects of Pra-C in a chronic inflammatory pain mouse model induced by complete Freund's adjuvant (CFA) injection. Pra-C (3 mg/kg) treatment for just 3 days after CFA challenge relieved CFA-induced mechanical allodynia and hindpaw edema in mice. In the anterior cingulate cortex (ACC), Pra-C treatment inhibited microglia activation and reduced levels of proinflammatory cytokines, TNF-α and IL-1β, and suppressed upregulation of glutamate receptors caused by CFA injection. In addition, Pra-C attenuated neuronal hyperexcitability in ACC of CFA-injected mice. In vitro studies confirmed the analgesic effect of Pra-C was due to its inhibitory ability on microglial activation. In conclusion, Pra-C administration had a certain effect on relieving chronic pain by inhibiting microglial activation, attenuating proinflammatory cytokine releasing and regulating excitatory synaptic proteins in the ACC of the CFA-injected mice.
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Affiliation(s)
- Dan-jie Su
- First Clinical Medical College of Shanxi Medical University, Taiyuan, China
| | - Long-fei Li
- Department of Pharmacy, Precision Pharmacy and Drug Development Center, Tangdu Hospital, Fourth Military Medical University, Xi’an, China
| | - Sai-ying Wang
- Department of Pharmacy, Precision Pharmacy and Drug Development Center, Tangdu Hospital, Fourth Military Medical University, Xi’an, China
| | - Qi Yang
- Department of Pharmacy, Precision Pharmacy and Drug Development Center, Tangdu Hospital, Fourth Military Medical University, Xi’an, China
| | - Yu-jing Wu
- Department of Medicine, 69224 Military Hospital, Xinjiang, China
| | - Ming-gao Zhao
- Department of Pharmacy, Precision Pharmacy and Drug Development Center, Tangdu Hospital, Fourth Military Medical University, Xi’an, China
| | - Le Yang
- Department of Pharmacy, Precision Pharmacy and Drug Development Center, Tangdu Hospital, Fourth Military Medical University, Xi’an, China
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Kido K, Katagiri N, Kawana H, Sugino S, Konno D, Suzuki J, Yamauchi M, Sanuki T. Effects of magnesium sulfate administration in attenuating chronic postsurgical pain in rats. Biochem Biophys Res Commun 2020; 534:395-400. [PMID: 33246558 DOI: 10.1016/j.bbrc.2020.11.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 11/16/2020] [Indexed: 01/01/2023]
Abstract
Chronic postsurgical pain (CPSP) is a serious issue for many postoperative patients. Though there are numerous treatment options for the prevention of CPSP, none of them is optimal as the mechanisms of the transition from acute to chronic postoperative pain have not been elucidated. Ketamine and opioids have been administered for chronic postoperative pain treatment but induce severe adverse reactions and/or physical dependency. Here, we examined whether pre-administration of the nonselective N-methyl-d-aspartate (NMDA) receptor antagonist magnesium sulfate attenuates CPSP behavior and alters the expression of glutamate ionotropic receptor NMDA type subunit 1a (Grin1 mRNA) in a rat skin/muscle incision and retraction (SMIR) model. We assessed the effects of a single subcutaneous magnesium sulfate injection on nociceptive behaviors including guarding pain, mechanical hyperalgesia, and heat hypersensitivity in rats after SMIR surgery. We used reverse transcription-quantitative PCR (RT-qPCR) to evaluate Grin1 mRNA expression in the dorsal horn of the spinal cord on postoperative day 14. Compared with the vehicle, magnesium sulfate administration before SMIR surgery reduced mechanical hyperalgesia for 17 d Grin1 gene expression was significantly higher on the ipsilateral side than the contralateral side (P = 0.001) on postoperative day 14. The magnesium sulfate injection prevented Grin1 mRNA upregulation in the spinal cord dorsal horn. A single magnesium sulfate injection mitigated SMIR-induced mechanical hyperalgesia possibly by modulating Grin1 expression. Preoperative magnesium sulfate administration could prove to be a simple and safe CPSP treatment.
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Affiliation(s)
- Kanta Kido
- Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan.
| | - Norika Katagiri
- Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
| | - Hiromasa Kawana
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
| | - Shigekazu Sugino
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Jun Suzuki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Takuro Sanuki
- Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
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Springborg AD, Jensen EK, Kreilgaard M, Petersen MA, Papathanasiou T, Lund TM, Taylor BK, Werner MU. High-dose naloxone: Effects by late administration on pain and hyperalgesia following a human heat injury model. A randomized, double-blind, placebo-controlled, crossover trial with an enriched enrollment design. PLoS One 2020; 15:e0242169. [PMID: 33180816 PMCID: PMC7660513 DOI: 10.1371/journal.pone.0242169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/27/2020] [Indexed: 11/18/2022] Open
Abstract
Severe chronic postsurgical pain has a prevalence of 4–10% in the surgical population. The underlying nociceptive mechanisms have not been well characterized. Following the late resolution phase of an inflammatory injury, high-dose μ-opioid-receptor inverse agonists reinstate hypersensitivity to nociceptive stimuli. This unmasking of latent pain sensitization has been a consistent finding in rodents while only observed in a limited number of human volunteers. Latent sensitization could be a potential triggering venue in chronic postsurgical pain. The objective of the present trial was in detail to examine the association between injury-induced secondary hyperalgesia and naloxone-induced unmasking of latent sensitization. Healthy volunteers (n = 80) received a cutaneous heat injury (47°C, 420 s, 12.5 cm2). Baseline secondary hyperalgesia areas were assessed 1 h post-injury. Utilizing an enriched enrollment design, subjects with a magnitude of secondary hyperalgesia areas in the upper quartile (‘high-sensitizers’ [n = 20]) and the lower quartile (‘low-sensitizers’ [n = 20]) were selected for further study. In four consecutive experimental sessions (Sessions 1 to 4), the subjects at two sessions (Sessions 1 and 3) received a cutaneous heat injury followed 168 h later (Sessions 2 and 4) by a three-step target-controlled intravenous infusion of naloxone (3.25 mg/kg), or normal saline. Assessments of secondary hyperalgesia areas were made immediately before and stepwise during the infusions. Simple univariate statistics revealed no significant differences in secondary hyperalgesia areas between naloxone and placebo treatments (P = 0.215), or between ‘high-sensitizers’ and ‘low-sensitizers’ (P = 0.757). In a mixed-effects model, secondary hyperalgesia areas were significantly larger following naloxone as compared to placebo for ‘high-sensitizers’ (P < 0.001), but not ‘low-sensitizers’ (P = 0.651). Although we could not unequivocally demonstrate naloxone-induced reinstatement of heat injury-induced hyperalgesia, further studies in clinical postsurgical pain models are warranted.
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Affiliation(s)
| | | | - Mads Kreilgaard
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Morten Aagaard Petersen
- The Research Unit, Department of Palliative Medicine, Copenhagen University Hospitals, Copenhagen, Denmark
| | - Theodoros Papathanasiou
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Trine Meldgaard Lund
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bradley Kenneth Taylor
- Department of Anesthesiology, Pittsburgh Center for Pain Research, and the Pittsburgh Project to End Opioid Misuse, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Mads Utke Werner
- Neuroscience Center, Copenhagen University Hospitals, Copenhagen, Denmark
- Department of Clinical Sciences, Lund University, Lund, Sweden
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Arribas-Blázquez M, Olivos-Oré LA, Barahona MV, Wojnicz A, De Pascual R, Sánchez de la Muela M, García AG, Artalejo AR. The Adrenal Medulla Modulates Mechanical Allodynia in a Rat Model of Neuropathic Pain. Int J Mol Sci 2020; 21:ijms21218325. [PMID: 33171955 PMCID: PMC7664230 DOI: 10.3390/ijms21218325] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/31/2020] [Accepted: 11/04/2020] [Indexed: 01/26/2023] Open
Abstract
We have investigated whether the stress response mediated by the adrenal medulla in rats subjected to chronic constriction injury of the sciatic nerve (CCI) modulates their nocifensive behavior. Treatment with SK29661 (300 mg/kg; intraperitoneal (I.P.)), a selective inhibitor of phenylethanolamine N-methyltransferase (PNMT) that converts noradrenaline (NA) into adrenaline (A), fully reverted mechanical allodynia in the injured hind paw without affecting mechanical sensitivity in the contralateral paw. The effect was fast and reversible and was associated with a decrease in the A to NA ratio (A/NA) in the adrenal gland and circulating blood, an A/NA that was elevated by CCI. 1,2,3,4-tetrahydroisoquinoline-7-sulfonamide (SKF29661) did not affect exocytosis evoked by Ca2+ entry as well as major ionic conductances (voltage-gated Na+, Ca2+, and K+ channels, nicotinic acetylcholine receptors) involved in stimulus-secretion coupling in chromaffin cells, suggesting that it acted by changing the relative content of the two adrenal catecholamines. Denervation of the adrenal medulla by surgical splanchnectomy attenuated mechanical allodynia in neuropathic animals, hence confirming the involvement of the adrenal medulla in the pathophysiology of the CCI model. Inhibition of PNMT appears to be an effective and probably safe way to modulate adrenal medulla activity and, in turn, to alleviate pain secondary to the injury of a peripheral nerve.
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Affiliation(s)
- Marina Arribas-Blázquez
- Department of Pharmacology and Toxicology, Veterinary Faculty and Instituto Universitario de Investigación en Neuroquímica, Universidad Complutense de Madrid, 28040 Madrid, Spain; (M.A.-B.); (L.A.O.-O.); (M.V.B.)
- Instituto de Investigación Sanitaria San Carlos, 28040 Madrid, Spain
| | - Luis Alcides Olivos-Oré
- Department of Pharmacology and Toxicology, Veterinary Faculty and Instituto Universitario de Investigación en Neuroquímica, Universidad Complutense de Madrid, 28040 Madrid, Spain; (M.A.-B.); (L.A.O.-O.); (M.V.B.)
- Instituto de Investigación Sanitaria San Carlos, 28040 Madrid, Spain
| | - María Victoria Barahona
- Department of Pharmacology and Toxicology, Veterinary Faculty and Instituto Universitario de Investigación en Neuroquímica, Universidad Complutense de Madrid, 28040 Madrid, Spain; (M.A.-B.); (L.A.O.-O.); (M.V.B.)
- Instituto de Investigación Sanitaria San Carlos, 28040 Madrid, Spain
| | - Aneta Wojnicz
- Departamento de Farmacología, Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, 28029 Madrid, Spain; (A.W.); (R.D.P.); (A.G.G.)
- Instituto de Investigación Sanitaria, Hospital Universitario de La Princesa, 28006 Madrid, Spain
| | - Ricardo De Pascual
- Departamento de Farmacología, Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, 28029 Madrid, Spain; (A.W.); (R.D.P.); (A.G.G.)
- Instituto de Investigación Sanitaria, Hospital Universitario de La Princesa, 28006 Madrid, Spain
| | - Mercedes Sánchez de la Muela
- Department of Animal Medicine and Surgery, Veterinary Faculty, Universidad Complutense de Madrid, 20040 Madrid, Spain;
| | - Antonio G. García
- Departamento de Farmacología, Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, 28029 Madrid, Spain; (A.W.); (R.D.P.); (A.G.G.)
- Instituto de Investigación Sanitaria, Hospital Universitario de La Princesa, 28006 Madrid, Spain
| | - Antonio R. Artalejo
- Department of Pharmacology and Toxicology, Veterinary Faculty and Instituto Universitario de Investigación en Neuroquímica, Universidad Complutense de Madrid, 28040 Madrid, Spain; (M.A.-B.); (L.A.O.-O.); (M.V.B.)
- Instituto de Investigación Sanitaria San Carlos, 28040 Madrid, Spain
- Correspondence: ; Tel.: +34-913-943-851
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Jayaram P, Liu C, Dawson B, Ketkar S, Patel SJ, Lee BH, Grol MW. Leukocyte-dependent effects of platelet-rich plasma on cartilage loss and thermal hyperalgesia in a mouse model of post-traumatic osteoarthritis. Osteoarthritis Cartilage 2020; 28:1385-1393. [PMID: 32629163 PMCID: PMC7787501 DOI: 10.1016/j.joca.2020.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 06/14/2020] [Accepted: 06/22/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Platelet-rich plasma (PRP) is an emerging therapeutic strategy for treatment of osteoarthritis (OA); however, there is a lack of preclinical and clinical evidence for its efficacy and its mechanism of action is unclear. In the current study, we utilized leukocyte poor-PRP (LP-PRP) and leukocyte rich-PRP (LR-PRP) to mimic clinical point of care formulations and assessed their potential to alter disease progression in a mouse model of post-traumatic OA. METHOD Three-month-old wild-type male FVB/N mice received destabilization of the medial meniscus (DMM) surgery to induce OA. To assess the efficacy of LP-PRP and LR-PRP, mice were given intraarticular injections at 2-, 7- and 28-days post-surgery. Mice were then assessed at 5-, 9-, and 13-weeks post-surgery for changes in chronic pain using the hot plate nociceptive assay. At 14-weeks, OA pathogenesis was evaluated using histology and phase-contrast μCT. RESULTS Treatment with LP-PRP and to a lesser extent LR-PRP preserved cartilage volume and surface area compared to phosphate-buffered saline (PBS) as measured by phase-contrast μCT. However, both treatments had higher Osteoarthritis Research Society International (OARSI) and synovitis scores compared to sham, and neither substantially improved scores compared to PBS controls. With respect to thermal hyperalgesia, PBS-treated mice displayed reduced latency to response compared to sham, and LR-PRP but not LP-PRP improved latency to response at 5-, 9- and 13-weeks post-surgery compared to PBS. CONCLUSION The results of this study suggest that effects of PRP therapy on OA progression and disease-induced hyperalgesia may be leukocyte-dependent. And while LP-PRP and to a lesser extent LR-PRP protect from volume and surface loss, significant pathology is still seen within OA joints. Future work is needed to understand how the different components of PRP effect OA pathogenesis and pain, and how these could be modified to achieve greater therapeutic efficacy.
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Affiliation(s)
- P Jayaram
- H. Ben Taub Department of Physical Medicine & Rehabilitation, Baylor College of Medicine, Houston, TX, USA; Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX, USA
| | - C Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - B Dawson
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - S Ketkar
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - S J Patel
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - B H Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
| | - M W Grol
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
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Li D, Yoo JH, Kim SK. Long-Lasting and Additive Analgesic Effects of Combined Treatment of Bee Venom Acupuncture and Venlafaxine on Paclitaxel-Induced Allodynia in Mice. Toxins (Basel) 2020; 12:toxins12100620. [PMID: 32998357 PMCID: PMC7600305 DOI: 10.3390/toxins12100620] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/18/2020] [Accepted: 09/25/2020] [Indexed: 12/11/2022] Open
Abstract
Paclitaxel, a primary chemotherapeutic agent used to treat numerous solid malignancies, is commonly associated with debilitating peripheral neuropathy. However, a satisfactory gold-standard monotherapy for this neuropathic pain is not currently available. A combination strategy of two or more medications with different properties may achieve more beneficial effects than monotherapy. Thus, we investigated the analgesic efficacies and spinal mechanisms of the combination strategy, including bee venom acupuncture (BVA) and venlafaxine (VLX) against paclitaxel-induced allodynia in mice. Four intraperitoneal infusions of paclitaxel on alternating days (2 mg/kg/day) induced cold and mechanical allodynia for at least 1 week as assessed using acetone and the von Frey hair test, respectively. Co-treatment of BVA (1.0 mg/kg, s.c., ST36) with VLX (40 mg/kg, i.p.) at the medium dose produced a longer-lasting and additive effect than each monotherapy at the highest dose (BVA, 2.5 mg/kg; VLX, 60 mg/kg). Spinal pre-administration of idazoxan (α2-adrenergic receptor antagonist, 10 μg), methysergide (mixed 5-HT1/5-HT2 receptor antagonist, 10 μg), or MDL-72222 (5-HT3 receptor antagonist, 10 μg) abolished this analgesia. These results suggest that the combination therapy with BVA and VLX produces long-lasting and additive analgesic effects on paclitaxel-induced allodynia, via the spinal noradrenergic and serotonergic mechanism, providing a promising clinical strategy.
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Affiliation(s)
- Daxian Li
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea;
| | - Ju Hyuk Yoo
- Department of East-West Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea;
| | - Sun Kwang Kim
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea;
- Department of East-West Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea;
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
- Correspondence:
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Kim YY, Yoon JH, Um JH, Jeong DJ, Shin DJ, Hong YB, Kim JK, Kim DH, Kim C, Chung CG, Lee SB, Koh H, Yun J. PINK1 alleviates thermal hypersensitivity in a paclitaxel-induced Drosophila model of peripheral neuropathy. PLoS One 2020; 15:e0239126. [PMID: 32941465 PMCID: PMC7498067 DOI: 10.1371/journal.pone.0239126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 08/31/2020] [Indexed: 11/18/2022] Open
Abstract
Paclitaxel is a representative anticancer drug that induces chemotherapy-induced peripheral neuropathy (CIPN), a common side effect that limits many anticancer chemotherapies. Although PINK1, a key mediator of mitochondrial quality control, has been shown to protect neuronal cells from various toxic treatments, the role of PINK1 in CIPN has not been investigated. Here, we examined the effect of PINK1 expression on CIPN using a recently established paclitaxel-induced peripheral neuropathy model in Drosophila larvae. We found that the class IV dendritic arborization (C4da) sensory neuron-specific expression of PINK1 significantly ameliorated the paclitaxel-induced thermal hyperalgesia phenotype. In contrast, knockdown of PINK1 resulted in an increase in thermal hypersensitivity, suggesting a critical role for PINK1 in sensory neuron-mediated thermal nociceptive sensitivity. Interestingly, analysis of the C4da neuron morphology suggests that PINK1 expression alleviates paclitaxel-induced thermal hypersensitivity by means other than preventing alterations in sensory dendrites in C4da neurons. We found that paclitaxel induces mitochondrial dysfunction in C4da neurons and that PINK1 expression suppressed the paclitaxel-induced increase in mitophagy in C4da neurons. These results suggest that PINK1 mitigates paclitaxel-induced sensory dendrite alterations and restores mitochondrial homeostasis in C4da neurons and that improvement in mitochondrial quality control could be a promising strategy for the treatment of CIPN.
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Affiliation(s)
- Young Yeon Kim
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Jeong-Hyun Yoon
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Jee-Hyun Um
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Dae Jin Jeong
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Dong Jin Shin
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Young Bin Hong
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Jong Kuk Kim
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Neurology, College of Medicine, Dong‐A University, Busan, Republic of Korea
| | - Dong Hyun Kim
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, Republic of Korea
| | - Changsoo Kim
- Hormone Research Center, School of Biological Sciences and Technology, Chonnam National University, Gwangju, South Korea
| | - Chang Geon Chung
- Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Republic of Korea
| | - Sung Bae Lee
- Department of Pharmacology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Hyongjong Koh
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Pharmacology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Jeanho Yun
- Peripheral Neuropathy Research Center, Dong-A University, Busan, Republic of Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, Republic of Korea
- * E-mail:
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75
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Ramos DDBM, Araújo MTDMF, Araújo TCDL, Silva YA, Dos Santos ACLA, E Silva MG, Paiva PMG, Mendes RL, Napoleão TH. Antinociceptive activity of Schinus terebinthifolia leaf lectin (SteLL) in sarcoma 180-bearing mice. J Ethnopharmacol 2020; 259:112952. [PMID: 32416247 DOI: 10.1016/j.jep.2020.112952] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/29/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Schinus terebinthifolia Raddi leaves have been used in folk medicine due to several properties, including antitumor and analgesic effects. The variable efficacy and adverse effects of analgesic drugs have motivated the search for novel antinociceptive agents. It has been reported that the S. terebinthifolia leaf lectin (SteLL) has antitumor activity against sarcoma 180 in mice. AIM OF THE STUDY This work aimed to evaluate whether SteLL would reduce cancer pain using an orthotopic tumor model. MATERIALS AND METHODS A sarcoma 180 cell suspension was inoculated into the right hind paws of mice, and the treatments (150 mM NaCl, negative control; 10 mg/kg morphine, positive control; or SteLL at 1 and 2 mg/kg) were administered intraperitoneally 24 h after cell inoculation up to 14 days. Spontaneous nociception, mechanical hyperalgesia, and hot-plate tests were performed. Further, the volume and weight of the tumor-bearing paws were measured. RESULTS SteLL (2 mg/kg) improved limb use during ambulation. The lectin (1 and 2 mg/kg) also inhibited mechanical hyperalgesia and increased the latency time during the hot-plate test. Naloxone was found to reverse this effect, indicating the involvement of opioid receptors. The tumor-bearing paws of mice treated with SteLL exhibited lower volume and weight. CONCLUSION SteLL reduced hyperalgesia due to sarcoma 180 in the paws of mice, and this effect can be related to its antitumor action.
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Affiliation(s)
- Dalila de Brito Marques Ramos
- Campus Amilcar Ferreira Sobral, Universidade Federal do Piauí, Floriano, Piauí, Brazil; Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - Yasmym Araújo Silva
- Laboratório de Oncologia Experimental, Universidade Federal do Vale do São Francisco, Petrolina, Pernambuco, Brazil
| | | | - Mariana Gama E Silva
- Laboratório de Oncologia Experimental, Universidade Federal do Vale do São Francisco, Petrolina, Pernambuco, Brazil
| | - Patrícia Maria Guedes Paiva
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Rosemairy Luciane Mendes
- Laboratório de Oncologia Experimental, Universidade Federal do Vale do São Francisco, Petrolina, Pernambuco, Brazil
| | - Thiago Henrique Napoleão
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
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Nakatani Y, Negoro K, Yamauchi M, Katasho M, Ishikura KI, Iwaki A, Tsukada K, Yamaguchi M, Uehara A, Yoshida M, Ishiuchi K, Makino T, Kitajima M, Ohsawa M, Amano T. Neoline, an active ingredient of the processed aconite root in Goshajinkigan formulation, targets Nav1.7 to ameliorate mechanical hyperalgesia in diabetic mice. J Ethnopharmacol 2020; 259:112963. [PMID: 32439405 DOI: 10.1016/j.jep.2020.112963] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 04/11/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Goshajinkigan (GJG), a traditional Japanese Kampo formula, has been shown to exhibit several pharmacological actions, including antinociceptive effects. Processed aconite root (PA), which is considered to be an active ingredient of GJG, has also been demonstrated to have an ameliorative effect on pain, such as diabetic peripheral neuropathic pain. We recently identified neoline as the active ingredient of both GJG and PA that is responsible for its effects against oxaliplatin-induced neuropathic pain in mice. AIM OF THE STUDY In the present study, we investigated whether GJG, PA, and neoline could inhibit Nav1.7 voltage-gated sodium channel (VGSC) current and whether neoline could ameliorate mechanical hyperalgesia in diabetic mice. MATERIALS AND METHODS To assess the electrophysiological properties of GJG extract formulation, powdered PA, and neoline on Nav1.7 VGSCs, whole-cell patch clamp recording was performed using human HEK293 cells expressing Nav1.7 VGSCs. In addition, the ameliorative effects of neoline on diabetic peripheral neuropathic pain were evaluated using the von Frey test in streptozotocin (STZ)-induced diabetic model mice. RESULTS GJG extract formulation significantly inhibited Nav1.7 VGSC peak current. Powdered PA also inhibited Nav1.7 VGSC peak current. Like GJG and PA, neoline could inhibit Nav1.7 VGSC current. When diabetic mice were treated with neoline by intraperitoneal acute administration, the mechanical threshold was increased in diabetic mice, but not in non-diabetic mice, in a behavioral study. CONCLUSION These results suggest that neoline might be a novel active ingredient of GJG and PA that is one of responsible ingredients for ameliorating mechanical hyperalgesia in diabetes via the inhibition of Nav1.7 VGSC current at least.
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Affiliation(s)
- Yoshihiko Nakatani
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan; Advanced Education and Research Center for Kampo Medicine, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Kanako Negoro
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Miki Yamauchi
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Maki Katasho
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Kei-Ichiro Ishikura
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Anna Iwaki
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Kazuyo Tsukada
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Marina Yamaguchi
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Arata Uehara
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Masato Yoshida
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Kan'ichiro Ishiuchi
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Toshiaki Makino
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Masaki Kitajima
- International University of Health and Welfare, Tokyo Office, Amity-Nogizaka-BIdg 1-24-1 Minamiaoyama, Minato-ku, Tokyo, 107-0062, Japan
| | - Masahiro Ohsawa
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Taku Amano
- Department of Pharmacotherapeutics, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan; Advanced Education and Research Center for Kampo Medicine, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
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77
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Xie AX, Madayag A, Minton SK, McCarthy KD, Malykhina AP. Sensory satellite glial Gq-GPCR activation alleviates inflammatory pain via peripheral adenosine 1 receptor activation. Sci Rep 2020; 10:14181. [PMID: 32843670 PMCID: PMC7447794 DOI: 10.1038/s41598-020-71073-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/10/2020] [Indexed: 02/07/2023] Open
Abstract
Glial fibrillary acidic protein expressing (GFAP+) glia modulate nociceptive neuronal activity in both the peripheral nervous system (PNS) and the central nervous system (CNS). Resident GFAP+ glia in dorsal root ganglia (DRG) known as satellite glial cells (SGCs) potentiate neuronal activity by releasing pro-inflammatory cytokines and neuroactive compounds. In this study, we tested the hypothesis that SGC Gq-coupled receptor (Gq-GPCR) signaling modulates pain sensitivity in vivo using Gfap-hM3Dq mice. Complete Freund's adjuvant (CFA) was used to induce inflammatory pain, and mechanical sensitivity and thermal sensitivity were used to assess the neuromodulatory effect of glial Gq-GPCR activation in awake mice. Pharmacogenetic activation of Gq-GPCR signaling in sensory SGCs decreased heat-induced nociceptive responses and reversed inflammation-induced mechanical allodynia via peripheral adenosine A1 receptor activation. These data reveal a previously unexplored role of sensory SGCs in decreasing afferent excitability. The identified molecular mechanism underlying the analgesic role of SGCs offers new approaches for reversing peripheral nociceptive sensitization.
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MESH Headings
- Animals
- Benzilates/pharmacology
- Clozapine/analogs & derivatives
- Clozapine/pharmacology
- Freund's Adjuvant/toxicity
- GTP-Binding Protein alpha Subunits, Gq-G11/physiology
- Genes, Synthetic
- Hot Temperature
- Hyperalgesia/physiopathology
- Hyperalgesia/prevention & control
- Inflammation/chemically induced
- Inflammation/physiopathology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Muscarinic Agonists/pharmacology
- Neuroglia/enzymology
- Neuroglia/physiology
- Nociception/physiology
- Nortropanes/pharmacology
- Promoter Regions, Genetic
- Purinergic P1 Receptor Agonists/pharmacology
- Purinergic P1 Receptor Antagonists/pharmacology
- Receptor, Adenosine A1/drug effects
- Receptor, Adenosine A1/physiology
- Receptor, Muscarinic M3/drug effects
- Receptor, Muscarinic M3/genetics
- Receptor, Muscarinic M3/physiology
- Receptors, G-Protein-Coupled
- Recombinant Fusion Proteins/drug effects
- Recombinant Fusion Proteins/metabolism
- Theophylline/analogs & derivatives
- Theophylline/pharmacology
- Touch
- Xanthines/pharmacology
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Affiliation(s)
- Alison Xiaoqiao Xie
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, USA.
- Division of Urology, Department of Surgery, University of Colorado Denver (UCD), Anschutz Medical Campus (AMC), 12700E 19th Ave., Room 6440D, Mail stop C317, Aurora, CO, 80045, USA.
- Department of Surgery, UCD-AMC, Aurora, CO, USA.
| | - Aric Madayag
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, USA
- NeuroCycle Therapeutics, Inc., 3829 N Cramer St., Shorewood, WI, 53211, USA
| | - Suzanne K Minton
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, USA
- Certara, 5511 Capital Center Drive, Ste. 204, Raleigh, NC, 27606, USA
| | - Ken D McCarthy
- Professor Emeritus in the Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, 120 Mason Farm Road, 4010 Genetic Medicine Bldg, Campus Box 7365, Chapel Hill, NC, 27599-7365, USA
| | - Anna P Malykhina
- Division of Urology, Department of Surgery, University of Colorado Denver (UCD), Anschutz Medical Campus (AMC), 12700E 19th Ave., Room 6440D, Mail stop C317, Aurora, CO, 80045, USA
- Department of Physiology and Biophysics, University of Colorado School of Medicine, 12700 East 19th Ave., Rm 6001, Mail Stop C317, Aurora, CO, 80045, USA
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78
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Xiao-Die X, Xiao-Hong W, Cheng-Feng H, Zhong-Yu Y, Jian-Tao W, Hou-Guang Z, Jing-Chun G. Increased NRSF/REST in anterior cingulate cortex contributes to diabetes-related neuropathic pain. Biochem Biophys Res Commun 2020; 527:785-790. [PMID: 32423826 DOI: 10.1016/j.bbrc.2020.04.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023]
Abstract
Diabetic neuropathic pain is one of the most common complications of diabetes. Mechanisms underlying the central modulation are still unclear. Here, we investigated the role of the neuron-restricted silencing factor (NRSF/REST) in diabetic-related neuropathic pain. Mechanical allodynia and thermal hyperalgesia were assessed to evaluate painful behaviors. Our results found that in the anterior cingulate cortex (ACC) of db/db mice, NRSF/REST levels increased significantly. Reduction of NRSF/REST improved the painful sensation. Meanwhile, in vitro study found that high glucose and high palmitic acid treatment induced elevation of NRSF/REST and its cofactors (mSin3A, CoREST and HDAC1), whereas downregulation of GluR2 and NMDAR2B. Knockdown of NRSF/REST could attenuate the LDH release and partially reversed the expression changes of HDAC1 and NMDAR2B. Our results suggested that the elevation of NRSF/REST in the ACC area of db/db mice is one of the key mediators of diabetic neuropathic pain.
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Affiliation(s)
- Xu Xiao-Die
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Translational Neuroscience Jing'an District Centre Hospital of Shanghai, Fudan University, Shanghai, China
| | - Wen Xiao-Hong
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Translational Neuroscience Jing'an District Centre Hospital of Shanghai, Fudan University, Shanghai, China
| | - He Cheng-Feng
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Translational Neuroscience Jing'an District Centre Hospital of Shanghai, Fudan University, Shanghai, China
| | - Yu Zhong-Yu
- Department of Geriatric Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Wang Jian-Tao
- Department of Geriatric Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Zhou Hou-Guang
- Department of Geriatric Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Guo Jing-Chun
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Translational Neuroscience Jing'an District Centre Hospital of Shanghai, Fudan University, Shanghai, China.
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79
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Abstract
BACKGROUND A large body of research highlights the importance of early-life environmental impact on the health outcome in adulthood. However, whether early-life adversity (ELA) has any impact on the development of endometriosis is completely unclear. In this study, we tested the hypothesis that ELA, as manifested by neonatal separation, can accelerate the progression of endometriosis in mouse through activation of the adrenergic receptor β2 (ADRB2) signaling pathway, leading to increased angiogenesis and progression of endometriotic lesions. METHODS Eight female Balb/C mice, in late pregnancy, were used used for this study, which later gave birth to 22 female newborn pubs. Eleven additional female Balb/C mice were also used as donors of uterine tissues. The 22 newborn pubs were randomly divided into 2 equal-sized groups, maternal separation (MS) and no separation (NS). Pubs in the MS group were separated from their dams for 3 h/day from postnatal day (PND) 1 to 21, while those in the NS control remained in the home cage with their dams. In adulthood (8-week old), 3 mice in each group were randomly selected to undergo a battery of behavior tests. The remaining 8 mice in each group were induced with endometriosis by intraperitoneal injection of uterine fragments from donor mice. Four weeks after the induction, all mice were sacrificed and their endometriotic lesions were excised for quantification and then prepared for immunohistochemistry analysis. RESULTS We confirmed that MS during infancy resulted in anxiety and depression-like behaviors as previously reported. We also found that in MS mice the lesion weight was increased by over 2 folds and generalized hyperalgesia was also significantly increased as compared with NS mice. Immunostaining analysis demonstrated that MS accelerated the development of endometriosis likely through decreased dopamine receptor D2 (DRD2) expression and activation of the ADRB2/cAMP-response element binding protein (CREB) signaling pathway, leading to increased angiogenesis and progression of endometriotic lesions. CONCLUSIONS Exposure of female mouse pups to ELA such as MS during their infancy period accelerates the progression of endometriosis, possibly through altered neuronal wiring and hyperactivity of the hypothalamic-pituitary-adrenal axis.
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MESH Headings
- Animals
- Female
- Mice
- Animals, Newborn
- Anxiety/psychology
- Behavior, Animal
- Cyclic AMP Response Element-Binding Protein/metabolism
- Depression/psychology
- Disease Models, Animal
- Disease Progression
- Endometriosis/metabolism
- Endometriosis/pathology
- Endometriosis/physiopathology
- Endometriosis/psychology
- Hyperalgesia/metabolism
- Hyperalgesia/physiopathology
- Hyperalgesia/psychology
- Hypothalamo-Hypophyseal System/metabolism
- Injections, Intraperitoneal
- Maternal Deprivation
- Mice, Inbred BALB C
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/pathology
- Neovascularization, Pathologic/physiopathology
- Peritoneal Diseases/metabolism
- Peritoneal Diseases/pathology
- Peritoneal Diseases/physiopathology
- Peritoneal Diseases/psychology
- Pituitary-Adrenal System/metabolism
- Random Allocation
- Receptors, Adrenergic, beta-2/metabolism
- Receptors, Dopamine D2/metabolism
- Signal Transduction
- Uterus/transplantation
- Stress, Psychological
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Affiliation(s)
- Qiqi Long
- Shanghai Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200090, China
| | - Xishi Liu
- Shanghai Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200090, China
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China
| | - Sun-Wei Guo
- Shanghai Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200090, China.
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China.
- Shanghai Obstetrics and Gynecology Hospital, Fudan University Shanghai College of Medicine, 419 Fangxie Road, Shanghai, 200011, China.
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80
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Zhou YQ, Liu DQ, Chen SP, Chen N, Sun J, Wang XM, Li DY, Tian YK, Ye DW. PPARγ activation mitigates mechanical allodynia in paclitaxel-induced neuropathic pain via induction of Nrf2/HO-1 signaling pathway. Biomed Pharmacother 2020; 129:110356. [PMID: 32535388 DOI: 10.1016/j.biopha.2020.110356] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/26/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022] Open
Abstract
Paclitaxel-induced neuropathic pain (PINP) is a dose-limiting side effect and is refractory to widely used analgesic drugs. Previous studies have demonstrated a protective role of peroxisome proliferator-activated receptor gama (PPARγ) in neuropathic pain. However, whether PPARγ activation could alleviate PINP remains to be elucidated. Our previous study has validated the analgesic effect of oltipraz, an nuclear factor erythroid-2 related factor 2 (Nrf2) activator, in a rat model of PINP. In this study, we tested the hypothesis that rosiglitazone, a selective agonist of PPARγ, could attenuate PINP through induction of Nrf2/heme oxygenase-1 (HO-1) signaling pathway. Paclitaxel was injected intraperitoneally on four alternate days to induce neuropathic pain. Paw withdrawal threshold was used to evaluate mechanical allodynia. Western blot and immunofluorescence were used to examine the expression and distribution of PPARγ, Nrf2 and HO-1 in the spinal cord. Our results showed that rosiglitazone attenuated established PINP and delayed the onset of PINP via activation of PPARγ, which were reversed by PPARγ antagonist GW9662. Moreover, rosiglitazone inhibited downregulation of PPARγ in the spinal cord of PINP rats. Furthermore, the analgesic effect of rosiglitazone against PINP was abolished by trigonelline, an Nrf2 inhibitor. Finally, rosiglitazone significantly increased expression of Nrf2 and HO-1 in the spinal cord of PINP rats. Collectively, these results indicated that PPARγ activation might mitigate PINP through activating spinal Nrf2/HO-1 signaling pathway. Our results may provide an alternative option for PINP patients.
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Affiliation(s)
- Ya-Qun Zhou
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dai-Qiang Liu
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shu-Ping Chen
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Nan Chen
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Sun
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Mei Wang
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan-Yang Li
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu-Ke Tian
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Da-Wei Ye
- Cancer Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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81
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Ulker E, Caillaud M, Patel T, White A, Rashid D, Alqasem M, Lichtman AH, Bryant CD, Damaj MI. C57BL/6 substrain differences in formalin-induced pain-like behavioral responses. Behav Brain Res 2020; 390:112698. [PMID: 32428630 DOI: 10.1016/j.bbr.2020.112698] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/04/2020] [Accepted: 05/07/2020] [Indexed: 12/28/2022]
Abstract
Substantial evidence from preclinical models of pain suggests that basal and noxious nociceptive sensitivity, as well as antinociceptive responses to drugs, show significant heritability. Individual differences to these responses have been observed across species from rodents to humans. The use of closely related C57BL/6 inbred mouse substrains can facilitate gene mapping of acute nociceptive behaviors in preclinical pain models. In this study, we investigated behavioral differences between C57BL/6 J (B6 J) and C57BL/6 N (B6 N) substrains in the formalin test, a widely used tonic inflammatory pain model, using a battery of pain-related phenotypes, including reflexive tests, nesting, voluntary wheel running, sucrose preference and anxiety-like behavior in the light/dark test at two different time points (1-h and 24-h). Our results show that these substrains did not differ in reflexive thermal and mechanical responses at the 1-h time point. However, B6 N substrain mice showed increased sensitivity to spontaneous pain-like behaviors. In addition, B6 N substrain continued to show higher levels of mechanical hypersensitivity compared to controls at 24-h. indicating that mechanical hypersensitivity is a more persistent pain-related phenotype induced by formalin. Finally, no sex differences were observed in our outcome measures. Our results provide a comprehensive behavioral testing paradigm in response to an inflammatory agent for future mouse genetic studies in pain.
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Affiliation(s)
- Esad Ulker
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA.
| | - Martial Caillaud
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
| | - Trusha Patel
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
| | - Alyssa White
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
| | - Danyal Rashid
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
| | - Mashael Alqasem
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
| | - Aron H Lichtman
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
| | - Camron D Bryant
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics and Psychiatry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - M Imad Damaj
- Department of Pharmacology and Toxicology and Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Virginia Commonwealth University, Richmond, VA 23298-0613, USA
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Imbe H, Kimura A. Significance of medial preoptic area among the subcortical and cortical areas that are related to pain regulation in the rats with stress-induced hyperalgesia. Brain Res 2020; 1735:146758. [PMID: 32135148 DOI: 10.1016/j.brainres.2020.146758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/24/2020] [Accepted: 02/29/2020] [Indexed: 02/04/2023]
Abstract
Psychophysical stresses frequently increase sensitivity and response to pain, which is termed stress-induced hyperalgesia (SIH). However, the mechanism remains unknown. The subcortical areas such as medial preoptic area (MPO), dorsomedial nucleus of the hypothalamus (DMH), basolateral (BLA) and central nuclei of the amygdala (CeA), and the cortical areas such as insular (IC) and anterior cingulate cortices (ACC) play an important role in pain control via the descending pain modulatory system. In the present study we examined the expression of phosphorylated -cAMP-response element binding protein (pCREB) and the acetylation of histone H3 in these subcortical and cortical areas after repeated restraint stress to reveal changes in the subcortical and cortical areas that affect the function of descending pain modulatory system in the rats with SIH. The repeated restraint stress for 3 weeks induced a decrease in mechanical threshold in the rat hindpaw, an increase in the expression of pCREB in the MPO and an increase in the acetylation of histone H3 in the MPO, BLA and IC. The MPO was the only area that showed an increase in both the expression of pCREB and the acetylation of histone H3 among these examined areas after the repeated restraint stress. Furthermore, the number of pCREB-IR or acetylated histone H3-IR cells in the MPO was negatively correlated with the mechanical threshold. Together, our data represent the importance of the MPO among the subcortical and cortical areas that control descending pain modulatory system under the condition of SIH.
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Affiliation(s)
- Hiroki Imbe
- Department of Physiology, Wakayama Medical University, Kimiidera 811-1, Wakayama City 641-8509, Japan.
| | - Akihisa Kimura
- Department of Physiology, Wakayama Medical University, Kimiidera 811-1, Wakayama City 641-8509, Japan
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Ilari S, Giancotti LA, Lauro F, Dagostino C, Gliozzi M, Malafoglia V, Sansone L, Palma E, Tafani M, Russo MA, Tomino C, Fini M, Salvemini D, Mollace V, Muscoli C. Antioxidant modulation of sirtuin 3 during acute inflammatory pain: The ROS control. Pharmacol Res 2020; 157:104851. [PMID: 32423865 DOI: 10.1016/j.phrs.2020.104851] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 04/18/2020] [Accepted: 04/19/2020] [Indexed: 12/11/2022]
Abstract
Oxidative stress induced post-translational protein modifications are associated with the development of inflammatory hypersensitivities. At least 90% of cellular reactive oxygen species (ROS) are produced in the mitochondria, where the mitochondrial antioxidant, manganese superoxide dismutase (MnSOD), is located. MnSOD's ability to reduce ROS is enhanced by the mitochondrial NAD+-dependent deacetylase sirtuin (SIRT3). SIRT3 can reduce ROS levels by deacetylating MnSOD and enhancing its ability to neutralize ROS or by enhancing the transcription of MnSOD and other oxidative stress-responsive genes. SIRT3 can be post-translationally modified through carbonylation which results in loss of activity. The contribution of post-translational SIRT3 modifications in central sensitization is largely unexplored. Our results reveal that SIRT3 carbonylation contributes to spinal MnSOD inactivation during carrageenan-induced thermal hyperalgesia in rats. Moreover, inhibiting ROS with natural and synthetic antioxidants, prevented SIRT3 carbonylation, restored the enzymatic activity of MnSOD, and blocked the development of thermal hyperalgesia. These results suggest that therapeutic strategies aimed at inhibiting post-translational modifications of SIRT3 may provide beneficial outcomes in pain states where ROS have been documented to play an important role in the development of central sensitization.
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Affiliation(s)
- Sara Ilari
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy
| | - Luigino Antonio 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, MO 63104, USA
| | - Filomena Lauro
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy; 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, MO 63104, USA
| | - Concetta Dagostino
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy
| | - Micaela Gliozzi
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy
| | - Valentina Malafoglia
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy; Institute for Research on Pain, ISAL Foundation, Torre Pedrera, RN, Italy
| | - Luigi Sansone
- Department of Cellular and Molecular Pathology, IRCCS San Raffaele Pisana, 00163 Rome, Italy
| | - Ernesto Palma
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy
| | - Marco Tafani
- Department of Experimental Medicine, University of Rome "Sapienza", 00161 Rome, Italy
| | | | - Carlo Tomino
- Scientific Direction, IRCSS San Raffaele Pisana, 00163 Rome, Italy
| | - Massimo Fini
- Scientific Direction, IRCSS San Raffaele Pisana, 00163 Rome, Italy
| | - 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, MO 63104, USA
| | - Vincenzo Mollace
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy
| | - Carolina Muscoli
- Institute of Research for Food Safety & Health (IRC-FSH), Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88201 Catanzaro, Italy.
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84
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Yuan Q, Liu X, Xian YF, Yao M, Zhang X, Huang P, Wu W, Lin ZX. Satellite glia activation in dorsal root ganglion contributes to mechanical allodynia after selective motor fiber injury in adult rats. Biomed Pharmacother 2020; 127:110187. [PMID: 32361638 DOI: 10.1016/j.biopha.2020.110187] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 12/26/2022] Open
Abstract
Increasing evidence suggests that activation of satellite glia cells (SGCs) in sensory ganglia play important roles in the development of neuropathic pain. The present study aimed to investigate the involvement of SGC activation in a novel model of motor nerve injury induced pain hypersensitivity. The neuropathic pain model was established by cervical 8 ventral root avulsion (C8VA). Glial fibrillary acidic protein (GFAP) was used as a marker of SGC activation. Unilateral C8VA resulted in mechanical allodynia, but not thermal hyperalgesia in bilateral paws. Expectedly, SGCs were robustly activated on as early as 1 day and persisted for at least 7 days in the ipsilateral and contralateral dorsal root ganglia (DRG) of C6, C7 and C8 after C8VA. Double immunofluorescence showed that almost all the activated SGCs enveloped neurofilament 200 (NF200) positive myelinated neurons in DRG. Local application of fluorocitrate (FC), a glial metabolism inhibitor, significantly decreased the number of activated SGCs and alleviated bilateral mechanical allodynia. These results suggest that SGC activation contributed to ipsilateral and mirror-image pain hypersensitivity after C8VA. Inhibition of SGC activation represented a promising therapeutic strategy for the management of neuropathic pain following brachial plexus root avulsion.
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Affiliation(s)
- Qiuju Yuan
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, China.
| | - Xiaodong Liu
- Department of Anaesthesia and Intensive Care, Faculty of Medicine, The Chinese University of Hong Kong, China
| | - Yan-Fang Xian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, China
| | - Min Yao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, China
| | - Xie Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, China
| | - Pengyun Huang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, China
| | - Wutian Wu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, China; GHM Institute of CNS Regeneration, Jinan University, Guangzhou, China
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, China; Brain Research Centre, Faculty of Medicine, The Chinese University of Hong Kong, China.
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85
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Leibovich H, Buzaglo N, Tsuriel S, Peretz L, Caspi Y, Katz B, Lev S, Lichtstein D, Binshtok AM. Abnormal Reinnervation of Denervated Areas Following Nerve Injury Facilitates Neuropathic Pain. Cells 2020; 9:cells9041007. [PMID: 32325693 PMCID: PMC7226396 DOI: 10.3390/cells9041007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 01/23/2023] Open
Abstract
An injury to peripheral nerves leads to skin denervation, which often is followed by increased pain sensitivity of the denervated areas and the development of neuropathic pain. Changes in innervation patterns during the reinnervation process of the denervated skin could contribute to the development of neuropathic pain. Here, we examined the changes in the innervation pattern during reinnervation and correlated them with the symptoms of neuropathic pain. Using a multispectral labeling technique—PainBow, which we developed, we characterized dorsal root ganglion (DRG) neurons innervating distinct areas of the rats’ paw. We then used spared nerve injury, causing partial denervation of the paw, and examined the changes in innervation patterns of the denervated areas during the development of allodynia and hyperalgesia. We found that, differently from normal conditions, during the development of neuropathic pain, these areas were mainly innervated by large, non-nociceptive neurons. Moreover, we found that the development of neuropathic pain is correlated with an overall decrease in the number of DRG neurons innervating these areas. Importantly, treatment with ouabain facilitated reinnervation and alleviated neuropathic pain. Our results suggest that local changes in peripheral innervation following denervation contribute to neuropathic pain development. The reversal of these changes decreases neuropathic pain.
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Affiliation(s)
- Hodaya Leibovich
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
| | - Nahum Buzaglo
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
| | - Shlomo Tsuriel
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
| | - Liat Peretz
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
| | - Yaki Caspi
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
| | - Ben Katz
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
| | - Shaya Lev
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
| | - David Lichtstein
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
| | - Alexander M. Binshtok
- Department of Medical Neurobiology, Institute for Medical Research Israel Canada, Faculty of Medicine, The Hebrew University, Jerusalem 91120, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University, Jerusalem 91120, Israel
- Correspondence: ; Tel.: +972-2-675-7349
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86
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Peirs C, Dallel R, Todd AJ. Recent advances in our understanding of the organization of dorsal horn neuron populations and their contribution to cutaneous mechanical allodynia. J Neural Transm (Vienna) 2020; 127:505-525. [PMID: 32239353 PMCID: PMC7148279 DOI: 10.1007/s00702-020-02159-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/10/2020] [Indexed: 02/07/2023]
Abstract
The dorsal horns of the spinal cord and the trigeminal nuclei in the brainstem contain neuron populations that are critical to process sensory information. Neurons in these areas are highly heterogeneous in their morphology, molecular phenotype and intrinsic properties, making it difficult to identify functionally distinct cell populations, and to determine how these are engaged in pathophysiological conditions. There is a growing consensus concerning the classification of neuron populations, based on transcriptomic and transductomic analyses of the dorsal horn. These approaches have led to the discovery of several molecularly defined cell types that have been implicated in cutaneous mechanical allodynia, a highly prevalent and difficult-to-treat symptom of chronic pain, in which touch becomes painful. The main objective of this review is to provide a contemporary view of dorsal horn neuronal populations, and describe recent advances in our understanding of on how they participate in cutaneous mechanical allodynia.
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Affiliation(s)
- Cedric Peirs
- Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Clermont-Ferrand, F-63000, France.
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.
| | - Radhouane Dallel
- Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Clermont-Ferrand, F-63000, France
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Andrew J Todd
- Institute of Neuroscience and Psychology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
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87
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Pawlik K, Piotrowska A, Kwiatkowski K, Ciapała K, Popiolek‐Barczyk K, Makuch W, Mika J. The blockade of CC chemokine receptor type 1 influences the level of nociceptive factors and enhances opioid analgesic potency in a rat model of neuropathic pain. Immunology 2020; 159:413-428. [PMID: 31919846 PMCID: PMC7078003 DOI: 10.1111/imm.13172] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/19/2019] [Accepted: 01/07/2020] [Indexed: 12/15/2022] Open
Abstract
A growing body of evidence has indicated that the release of nociceptive factors, such as interleukins and chemokines, by activated immune and glial cells has crucial significance for neuropathic pain generation and maintenance. Moreover, changes in the production of nociceptive immune factors are associated with low opioid efficacy in the treatment of neuropathy. Recently, it has been suggested that CC chemokine receptor type 1 (CCR1) signaling is important for nociception. Our study provides evidence that the development of hypersensitivity in rats following chronic constriction injury (CCI) of the sciatic nerve is associated with significant up-regulation of endogenous CCR1 ligands, namely, CCL2, CCL3, CCL4, CCL6, CCL7 and CCL9 in the spinal cord and CCL2, CCL6, CCL7 and CCL9 in dorsal root ganglia (DRG). We showed that single and repeated intrathecal administration of J113863 (an antagonist of CCR1) attenuated mechanical and thermal hypersensitivity. Moreover, repeated administration of a CCR1 antagonist enhanced the analgesic properties of morphine and buprenorphine after CCI. Simultaneously, repeated administration of J113863 reduced the protein levels of IBA-1 in the spinal cord and MPO and CD4 in the DRG and, as a consequence, the level of pronociceptive factors, such as interleukin-1β (IL-1β), IL-6 and IL-18. The data obtained provide evidence that CCR1 blockade reduces hypersensitivity and increases opioid-induced analgesia through the modulation of neuroimmune interactions.
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Affiliation(s)
- Katarzyna Pawlik
- Department of Pain PharmacologyMaj Institute of PharmacologyPolish Academy of SciencesKrakowPoland
| | - Anna Piotrowska
- Department of Pain PharmacologyMaj Institute of PharmacologyPolish Academy of SciencesKrakowPoland
| | - Klaudia Kwiatkowski
- Department of Pain PharmacologyMaj Institute of PharmacologyPolish Academy of SciencesKrakowPoland
| | - Katarzyna Ciapała
- Department of Pain PharmacologyMaj Institute of PharmacologyPolish Academy of SciencesKrakowPoland
| | | | - Wioletta Makuch
- Department of Pain PharmacologyMaj Institute of PharmacologyPolish Academy of SciencesKrakowPoland
| | - Joanna Mika
- Department of Pain PharmacologyMaj Institute of PharmacologyPolish Academy of SciencesKrakowPoland
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88
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Romeo-Guitart D, Casas C. NeuroHeal Treatment Alleviates Neuropathic Pain and Enhances Sensory Axon Regeneration. Cells 2020; 9:E808. [PMID: 32230770 PMCID: PMC7226810 DOI: 10.3390/cells9040808] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/16/2020] [Accepted: 03/24/2020] [Indexed: 01/06/2023] Open
Abstract
Peripheral nerve injury (PNI) leads to the loss of motor, sensory, and autonomic functions, and often triggers neuropathic pain. During the last years, many efforts have focused on finding new therapies to increase axonal regeneration or to alleviate painful conditions. Still only a few of them have targeted both phenomena. Incipient or aberrant sensory axon regeneration is related to abnormal unpleasant sensations, such as hyperalgesia or allodynia. We recently have discovered NeuroHeal, a combination of two repurposed drugs; Acamprosate and Ribavirin. NeuroHeal is a neuroprotective agent that also enhances motor axon regeneration after PNI. In this work, we investigated its effect on sensory fiber regeneration and PNI-induced painful sensations in a rat model of spare nerve injury and nerve crush. The follow up of the animals showed that NeuroHeal treatment reduced the signs of neuropathic pain in both models. Besides, the treatment favored sensory axon regeneration, as observed in dorsal root ganglion explants. Mechanistically, the effects observed in vivo may improve the resolution of cell-protective autophagy. Additionally, NeuroHeal treatment modulated the P2X4-BDNF-KCC2 axis, which is an essential driver of neuropathic pain. These data open a new therapeutic avenue based on autophagic modulation to foster endogenous regenerative mechanisms and reduce the appearance of neuropathic pain in PNI.
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Affiliation(s)
- David Romeo-Guitart
- Institut de Neurociències (INc) and Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain;
- Institut Necker Enfants-Malades (INEM), INSERM U1151, Laboratory “Hormonal regulation of brain development and functions”—Team 8, Université Paris Descartes, Sorbonne Paris Cité, 75015 Paris, France
| | - Caty Casas
- Institut de Neurociències (INc) and Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain;
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89
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Griffin TM, Batushansky A, Hudson J, Lopes EBP. Correlation network analysis shows divergent effects of a long-term, high-fat diet and exercise on early stage osteoarthritis phenotypes in mice. J Sport Health Sci 2020; 9:119-131. [PMID: 32099720 PMCID: PMC7031811 DOI: 10.1016/j.jshs.2019.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/02/2019] [Accepted: 04/23/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Obesity increases knee osteoarthritis (OA) risk through metabolic, inflammatory, and biomechanical factors, but how these systemic and local mediators interact to drive OA pathology is not well understood. We tested the effect of voluntary running exercise after chronic diet-induced obesity on knee OA-related cartilage and bone pathology in mice. We then used a correlation-based network analysis to identify systemic and local factors associated with early-stage knee OA phenotypes among the different diet and exercise groups. METHODS Male C57BL/6J mice were fed a defined control (10% kcal fat) or high fat (HF) (60% kcal fat) diet from 6 to 37 weeks of age. At 25 weeks, one-half of the mice from each diet group were housed in cages with running wheels for the remainder of the study. Histology, micro computed tomography, and magnetic resonance imaging were used to evaluate changes in joint tissue structure and OA pathology. These local variables were then compared to systemic metabolic (body mass, body fat, and glucose tolerance), inflammatory (serum adipokines and inflammatory mediators), and functional (mechanical tactile sensitivity and grip strength) outcomes using a correlation-based network analysis. Diet and exercise effects were evaluated by two-way analysis of variance. RESULTS An HF diet increased the infrapatellar fat pad size and posterior joint osteophytes, and wheel running primarily altered the subchondral cortical and trabecular bone. Neither HF diet nor exercise altered average knee cartilage OA scores compared to control groups. However, the coefficient of variation was ≥25% for many outcomes, and some mice in both diet groups developed moderate OA (≥33% maximum score). This supported using correlation-based network analyses to identify systemic and local factors associated with early-stage knee OA phenotypes. In wheel-running cohorts, an HF diet reduced the network size compared to the control diet group despite similar running distances, suggesting that diet-induced obesity dampens the effects of exercise on systemic and local OA-related factors. Each of the 4 diet and activity groups showed mostly unique networks of local and systemic factors correlated with early-stage knee OA. CONCLUSION Despite minimal group-level effects of chronic diet-induced obesity and voluntary wheel running on knee OA pathology under the current test durations, diet and exercise substantially altered the relationships among systemic and local variables associated with early-stage knee OA. These results suggest that distinct pre-OA phenotypes may exist prior to the development of disease.
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MESH Headings
- Adipokines/blood
- Animals
- Cartilage, Articular/pathology
- Cartilage, Articular/physiopathology
- Diet, High-Fat/adverse effects
- Disease Models, Animal
- Hand Strength
- Hyperalgesia/physiopathology
- Inflammation Mediators/blood
- Male
- Mice, Inbred C57BL
- Obesity/complications
- Obesity/physiopathology
- Osteoarthritis, Knee/etiology
- Osteoarthritis, Knee/metabolism
- Osteoarthritis, Knee/pathology
- Osteoarthritis, Knee/physiopathology
- Physical Conditioning, Animal
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Affiliation(s)
- Timothy M Griffin
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation (OMRF), Oklahoma City, OK 73104, USA; Reynolds Oklahoma Center on Aging and Departments of Biochemistry and Molecular Biology, Physiology, and Geriatric Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Albert Batushansky
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation (OMRF), Oklahoma City, OK 73104, USA
| | - Joanna Hudson
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation (OMRF), Oklahoma City, OK 73104, USA
| | - Erika Barboza Prado Lopes
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation (OMRF), Oklahoma City, OK 73104, USA
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90
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Mun CJ, Letzen JE, Peters EN, Campbell CM, Vandrey R, Gajewski-Nemes J, DiRenzo D, Caufield-Noll C, Finan PH. Cannabinoid effects on responses to quantitative sensory testing among individuals with and without clinical pain: a systematic review. Pain 2020; 161:244-260. [PMID: 31613869 PMCID: PMC7162682 DOI: 10.1097/j.pain.0000000000001720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
There has been an explosion of interest in the utility of cannabinoids as potential analgesics. This systematic review critically synthesizes the evidence for cannabinoid analgesic effects on quantitative sensory testing outcomes in both healthy adults and patients with chronic noncancer pain. Our systematic review protocol is preregistered on PROSPERO (CRD42018117367). An electronic search was made in PsycINFO, Cochrane, Google Scholar, Embase, and Pubmed of all literature published until August 2018. Of the 1217 studies found from the search, a total 39 placebo-controlled studies that met the eligibility criteria were synthesized for this study. Because of substantial heterogeneity of study designs, populations, cannabinoid compounds, and quantitative sensory testing outcomes, meta-analysis was not conducted. More consistent evidence of cannabinoid analgesia was observed for inhaled cannabis than synthetic cannabinoids. Analgesic effects were most commonly observed in tests of cold pain sensitivity, and hyperalgesic effects were most commonly observed in tests of electrical stimulation. Patterns of findings from studies with healthy subjects did not substantively differ from those with chronic noncancer pain. However, these observations are qualified by the high degree of inconsistency across studies and methodological heterogeneity. We offer recommendations for future studies to improve study rigor and reproducibility.
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91
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Seo YH, Gil YW, Choe G, Lee SH, Yoo SH, Park HJ. Comparative Study of Chronic Postischemic Pain Models in Mice: O-Ring Versus Tie Method. Pain Physician 2020; 23:E51-E60. [PMID: 32013288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND The success rate for the production of animal models of chronic postischemia pain (CPIP) using an O-ring has yet to be improved in the study of complex regional pain syndrome-type I (CRPS-I), and producing a CPIP model is challenging, especially for mice. OBJECTIVES We devised a new CPIP model with a higher success rate that induces ischemia for 3 hours by tying the hind limbs of mice with a rubber band, followed by reperfusion. STUDY DESIGN A randomized, controlled animal trial. METHODS Twenty-two male C57BL/6 mice were divided into a sham (n = 6), a ring (n = 8), and a tie group (n = 8). Anesthesia was induced using isoflurane. A precut O-ring was mounted on the upper left ankle in the sham group. A tight-fitting O-ring and a push-pull gauge manometer were mounted at the same location in the ring and tie groups, respectively. Reperfusion was induced 3 hours later. The thickness and circumference of the hind paws were measured before ischemia induction. Measurements were repeated 10 days after reperfusion. Mechanical allodynia was measured with a von Frey filament until 12 weeks after reperfusion. RESULTS The new tie model required 5 additional days until the onset of allodynia compared with the existing CPIP O-ring model. However, the successful induction rate of CPIP was higher in the tie group than in the ring group, and allodynia was maintained for over 30 days in the tie group. The ring and tie groups exhibited significantly high levels of tumor necrosis factor-alpha than those in the sham group. LIMITATIONS First, we did not evaluate hyperalgesia, cold or heat allodynia. Second, we did not measure blood levels of inflammatory or antiinflammatory cytokines, and research on oxidative stress biomarkers such as isoprostane, 8-hydroxy-2'-deoxyguanosine (a marker of DNA oxidative damage), and malondialdehyde was not performed. CONCLUSIONS The new CPIP tie model has a higher rate of successful induction than existing O-ring models for mice, with longer duration of mechanical allodynia. The model may reduce the number of animals sacrificed in CRPS-I research and could be useful for studying long-term effects of drugs. KEY WORDS CPIP, mouse, O-ring, rubber band, reperfusion, allodynia, hyperalgesia.
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Affiliation(s)
| | - Ye Won Gil
- Soonchunhyang University Hospital Cheonan
| | - Gyuho Choe
- Catholic University of Korea School of Medicine
| | - Sung Hyun Lee
- Department of Anesthesiology and Pain Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | - Hue Jung Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea
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92
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Gousset S, Mouraux A, van den Broeke EN. Burst-like conditioning electrical stimulation is more efficacious than continuous stimulation for inducing secondary hyperalgesia in humans. J Neurophysiol 2020; 123:323-328. [PMID: 31825708 PMCID: PMC6985853 DOI: 10.1152/jn.00675.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 11/22/2022] Open
Abstract
The aim of the present study was to compare the efficacy of burst-like conditioning electrical stimulation vs. continuous stimulation of cutaneous nociceptors for inducing increased pinprick sensitivity in the surrounding unstimulated skin (a phenomenon referred to as secondary hyperalgesia). In a first experiment (n = 30), we compared the increase in mechanical pinprick sensitivity induced by 50-Hz burst-like stimulation (n = 15) vs. 5-Hz continuous stimulation (n = 15) while maintaining constant the total number of stimuli and the total duration of stimulation. We found a significantly greater increase in mechanical pinprick sensitivity in the surrounding unstimulated skin after 50-Hz burst-like stimulation compared with 5-Hz continuous stimulation (P = 0.013, Cohen's d = 0.970). Importantly, to control for the different frequency of stimulation, we compared in a second experiment (n = 40) 5-Hz continuous stimulation (n = 20) vs. 5-Hz burst-like stimulation (n = 20), this time while keeping the total number of stimuli as well as the frequency of stimulation identical. Again, we found a significantly greater increase in pinprick sensitivity after 5-Hz burst-like stimulation compared with 5-Hz continuous stimulation (P = 0.009, Cohen's d = 0.868). To conclude, our data indicate that burst-like conditioning electrical stimulation is more efficacious than continuous stimulation for inducing secondary hyperalgesia.NEW & NOTEWORTHY Burst-like electrical conditioning stimulation of cutaneous nociceptors is more efficacious than continuous stimulation for inducing heterosynaptic facilitation of mechanical nociceptive input in humans.
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Affiliation(s)
- S Gousset
- System and Cognition Division, Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
| | - A Mouraux
- System and Cognition Division, Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
| | - E N van den Broeke
- System and Cognition Division, Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
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93
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Wang J, Xu W, Kong Y, Huang J, Ding Z, Deng M, Guo Q, Zou W. SNAP-25 Contributes to Neuropathic Pain by Regulation of VGLuT2 Expression in Rats. Neuroscience 2019; 423:86-97. [PMID: 31705888 DOI: 10.1016/j.neuroscience.2019.10.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 12/23/2022]
Abstract
Synaptosomal-associated protein 25 (SNAP-25) plays an important role in neuropathic pain. However, the underlying mechanism is largely unknown. Vesicular glutamate transporter 2 (VGluT2) is an isoform of vesicular glutamate transporters that controls the storage and release of glutamate. In the present study, we found the expression levels of VGluT2 correlated with the upregulation of SNAP-25 in the spinal cord of rats following chronic constriction injury (CCI)-induced neuropathic pain. Cleavage of SNAP-25 by Botulinum toxin A (BoNT/A) attenuated mechanical allodynia, downregulated the expression of VGluT2 and reduced glutamate release. Overexpression of VGluT2 abolished the antinociceptive effect of BoNT/A. Upregulation of SNAP-25 in naive rats increased VGluT2 expression and induced pain-responsive behaviors. In pheochromocytoma (PC12) cells, the expression of VGluT2 was also depended on SNAP-25 dysregulation. Moreover, we found VGluT2 was involved in SNAP-25-mediated regulation of astrocyte expression and activation of the PKA/p-CREB pathway mediated the upregulation of SNAP-25 in neuropathic pain. The findings of our study indicate that VGluT2 contributes to the effect of SNAP-25 in maintaining the development of neuropathic pain and suggests a novel mechanism underlying SNAP-25 regulation of neuropathic pain.
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Affiliation(s)
- Jian Wang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wei Xu
- Department of Anesthesiology, Hunan Provincial Maternal and Child Health Care Hospital, China
| | - Yan Kong
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jiangju Huang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zhuofeng Ding
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Meiling Deng
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qulian Guo
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wangyuan Zou
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
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94
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Maegawa H, Adachi N, Hanamoto H, Kudo C, Niwa H. Bilateral Parkinson's disease model rats exhibit hyperalgesia to subcutaneous formalin administration into the vibrissa pad. PLoS One 2019; 14:e0225928. [PMID: 31805115 PMCID: PMC6894844 DOI: 10.1371/journal.pone.0225928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 11/12/2019] [Indexed: 01/26/2023] Open
Abstract
We bilaterally injected 6-hydroxydopamine (6-OHDA) into the medial forebrain bundle of rats and developed bilateral Parkinson’s disease (PD) model rats in order to experimentally investigate the neural mechanisms underlying the alteration of nociception in the orofacial region of patients with PD. We explored the effects of dopamine depletion on nociception by investigating behavioral responses (face rubbing) triggered by subcutaneous administration of formalin into the vibrissa pad. We also assessed the number of c-Fos–immunoreactive (c-Fos-IR) cells in the superficial layers of the trigeminal spinal subnucleus caudalis (Vc). Subcutaneous formalin administration evoked a two-phase increase in face rubbing. We observed the first increase 0–5 min after formalin administration (first phase) and the second increase 10–60 min after administration (second phase). The number of face rubbing behaviors of 6OHDA–injected rats did not significantly change compared with saline–injected rats in both phases. Significant increase of c-Fos-IR cells in the Vc was found in 6-OHDA–injected rats after formalin administration compared with those in saline–injected rats after formalin administration. We also assessed expression of c-Fos-IR cells in the paraventricular nucleus (PVN), and significant decrease of c-Fos-IR cells in the PVN of 6-OHDA–injected rats was found. Taken together, these findings suggest that bilateral dopaminergic denervation evoked by 6-OHDA administration causes hyperalgesia in the trigeminal region and the PVN may be involved in the hyperalgesia.
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Affiliation(s)
- Hiroharu Maegawa
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
- * E-mail: ,
| | - Nayuka Adachi
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Hiroshi Hanamoto
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Chiho Kudo
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Hitoshi Niwa
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Shimodaira T, Mikoshiba S, Taguchi T. Nonsteroidal anti-inflammatory drugs and acetaminophen ameliorate muscular mechanical hyperalgesia developed after lengthening contractions via cyclooxygenase-2 independent mechanisms in rats. PLoS One 2019; 14:e0224809. [PMID: 31693705 PMCID: PMC6834261 DOI: 10.1371/journal.pone.0224809] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 10/22/2019] [Indexed: 01/04/2023] Open
Abstract
Nonsteroidal anti-inflammatory drugs and acetaminophen are cyclooxygenase inhibitors commonly used as symptomatic medicines for myofascial pain syndrome. Using the selective inhibitors celecoxib and zaltoprofen, cyclooxygenase-2 has been shown to be involved in the initiation, but not the maintenance, of muscular mechanical hyperalgesia induced by lengthening contractions, which serves as a useful model for the study of myofascial pain syndrome. The effect of other cyclooxygenase-2 inhibitors, such as acetylsalicylic acid, ibuprofen, loxoprofen sodium, and acetaminophen, on muscular mechanical hyperalgesia during maintenance has not been studied. Here, we examined the analgesic effects of the nonsteroidal anti-inflammatory drugs and acetaminophen on the model. Consistent with previous studies, mechanical withdrawal threshold of the muscle was significantly decreased and reached its lowest level 24 h after lengthening contractions. Celecoxib had no effect on muscular mechanical hyperalgesia, when orally administered 24 h after lengthening contractions. In contrast, acetylsalicylic acid, ibuprofen, loxoprofen sodium, and acetaminophen increased the withdrawal threshold, which had decreased by lengthening contractions, in a dose-dependent manner. These results demonstrate the analgesic actions of nonsteroidal anti-inflammatory drugs and acetaminophen in the maintenance process of lengthening contraction-induced muscular mechanical hyperalgesia, which may occur through cyclooxygenase-2 independent mechanisms.
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Affiliation(s)
| | - Shigeo Mikoshiba
- Pharmaceutical Research Laboratories, Lion Corporation, Odawara, Japan
| | - Toru Taguchi
- Department of Physical Therapy, Niigata University of Health and Welfare, Kita-ku, Niigata, Japan
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Kita-ku, Niigata, Japan
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Bai Y, Chen YB, Qiu XT, Chen YB, Ma LT, Li YQ, Sun HK, Zhang MM, Zhang T, Chen T, Fan BY, Li H, Li YQ. Nucleus tractus solitarius mediates hyperalgesia induced by chronic pancreatitis in rats. World J Gastroenterol 2019; 25:6077-6093. [PMID: 31686764 PMCID: PMC6824279 DOI: 10.3748/wjg.v25.i40.6077] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Central sensitization plays a pivotal role in the maintenance of chronic pain induced by chronic pancreatitis (CP). We hypothesized that the nucleus tractus solitarius (NTS), a primary central site that integrates pancreatic afferents apart from the thoracic spinal dorsal horn, plays a key role in the pathogenesis of visceral hypersensitivity in a rat model of CP.
AIM To investigate the role of the NTS in the visceral hypersensitivity induced by chronic pancreatitis.
METHODS CP was induced by the intraductal injection of trinitrobenzene sulfonic acid (TNBS) in rats. Pancreatic hyperalgesia was assessed by referred somatic pain via von Frey filament assay. Neural activation of the NTS was indicated by immunohistochemical staining for Fos. Basic synaptic transmission within the NTS was assessed by electrophysiological recordings. Expression of vesicular glutamate transporters (VGluTs), N-methyl-D-aspartate receptor subtype 2B (NR2B), and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor subtype 1 (GluR1) was analyzed by immunoblotting. Membrane insertion of NR2B and GluR1 was evaluated by electron microscopy. The regulatory role of the NTS in visceral hypersensitivity was detected via pharmacological approach and chemogenetics in CP rats.
RESULTS TNBS treatment significantly increased the number of Fos-expressing neurons within the caudal NTS. The excitatory synaptic transmission was substantially potentiated within the caudal NTS in CP rats (frequency: 5.87 ± 1.12 Hz in CP rats vs 2.55 ± 0.44 Hz in sham rats, P < 0.01; amplitude: 19.60 ± 1.39 pA in CP rats vs 14.71 ± 1.07 pA in sham rats; P < 0.01). CP rats showed upregulated expression of VGluT2, and increased phosphorylation and postsynaptic trafficking of NR2B and GluR1 within the caudal NTS. Blocking excitatory synaptic transmission via the AMPAR antagonist CNQX and the NMDAR antagonist AP-5 microinjection reversed visceral hypersensitivity in CP rats (abdominal withdraw threshold: 7.00 ± 1.02 g in CNQX group, 8.00 ± 0.81 g in AP-5 group and 1.10 ± 0.27 g in saline group, P < 0.001). Inhibiting the excitability of NTS neurons via chemogenetics also significantly attenuated pancreatic hyperalgesia (abdominal withdraw threshold: 13.67 ± 2.55 g in Gi group, 2.00 ± 1.37 g in Gq group, and 2.36 ± 0.67 g in mCherry group, P < 0.01).
CONCLUSION Our findings suggest that enhanced excitatory transmission within the caudal NTS contributes to pancreatic pain and emphasize the NTS as a pivotal hub for the processing of pancreatic afferents, which provide novel insights into the central sensitization of painful CP.
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Affiliation(s)
- Yang Bai
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Ying-Biao Chen
- Department of Anatomy, Fujian Health College, Fuzhou 350101, Fujian Province, China
| | - Xin-Tong Qiu
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Yan-Bing Chen
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Li-Tian Ma
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Ying-Qi Li
- Department of Cardiology, The Second Affiliated Hospital of Xian Jiaotong University, Xian Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Hong-Ke Sun
- Department of Cardiology, The Second Affiliated Hospital of Xian Jiaotong University, Xian Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Ming-Ming Zhang
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Ting Zhang
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Tao Chen
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Bo-Yuan Fan
- Department of Cardiology, The Second Affiliated Hospital of Xian Jiaotong University, Xian Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Hui Li
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
| | - Yun-Qing Li
- Department of Anatomy, Histology and Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
- Joint Laboratory of Neuroscience at Hainan Medical University and Fourth Military Medical University, Hainan Medical University, Haikou 571199, Hainan Province, China
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Lai A, Ho L, Evashwick-Rogler TW, Watanabe H, Salandra J, Winkelstein BA, Laudier D, Hecht AC, Pasinetti GM, Iatridis JC. Dietary polyphenols as a safe and novel intervention for modulating pain associated with intervertebral disc degeneration in an in-vivo rat model. PLoS One 2019; 14:e0223435. [PMID: 31577822 PMCID: PMC6774529 DOI: 10.1371/journal.pone.0223435] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 09/21/2019] [Indexed: 01/08/2023] Open
Abstract
Developing effective therapies for back pain associated with intervertebral disc (IVD) degeneration is a research priority since it is a major socioeconomic burden and current conservative and surgical treatments have limited success. Polyphenols are naturally occurring compounds in plant-derived foods and beverages, and evidence suggests dietary supplementation with select polyphenol preparations can modulate diverse neurological and painful disorders. This study tested whether supplementation with a select standardized Bioactive-Dietary-Polyphenol-Preparation (BDPP) may alleviate pain symptoms associated with IVD degeneration. Painful IVD degeneration was surgically induced in skeletally-mature rats by intradiscal saline injection into three consecutive lumbar IVDs. Injured rats were given normal or BDPP-supplemented drinking water. In-vivo hindpaw mechanical allodynia and IVD height were assessed weekly for 6 weeks following injury. Spinal column, dorsal-root-ganglion (DRG) and serum were collected at 1 and 6 weeks post-operative (post-op) for analyses of IVD-related mechanical and biological pathogenic processes. Dietary BDPP significantly alleviated the typical behavioral sensitivity associated with surgical procedures and IVD degeneration, but did not modulate IVD degeneration nor changes of pro-inflammatory cytokine levels in IVD. Gene expression analyses suggested BDPP might have an immunomodulatory effect in attenuating the expression of pro-inflammatory cytokines in DRGs. This study supports the idea that dietary supplementation with BDPP has potential to alleviate IVD degeneration-related pain, and further investigations are warranted to identify the mechanisms of action of dietary BDPP.
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Affiliation(s)
- Alon Lai
- Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Lap Ho
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- James J. Peters Veterans Affairs Medical Center, Bronx, New York, United States of America
| | - Thomas W. Evashwick-Rogler
- Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | | | - Jonathan Salandra
- Philadelphia College of Osteopathic Medicine, Philadelphia, Pennsylvania, United States of America
| | - Beth A. Winkelstein
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Damien Laudier
- Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Andrew C. Hecht
- Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Giulio M. Pasinetti
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- James J. Peters Veterans Affairs Medical Center, Bronx, New York, United States of America
| | - James C. Iatridis
- Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
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Alkhatib O, da Costa R, Gentry C, Quallo T, Bevan S, Andersson DA. Promiscuous G-Protein-Coupled Receptor Inhibition of Transient Receptor Potential Melastatin 3 Ion Channels by Gβγ Subunits. J Neurosci 2019; 39:7840-7852. [PMID: 31451581 PMCID: PMC6774412 DOI: 10.1523/jneurosci.0882-19.2019] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/19/2019] [Accepted: 08/14/2019] [Indexed: 11/21/2022] Open
Abstract
Transient receptor potential melastatin 3 (TRPM3) is a nonselective cation channel that is inhibited by Gβγ subunits liberated following activation of Gαi/o protein-coupled receptors. Here, we demonstrate that TRPM3 channels are also inhibited by Gβγ released from Gαs and Gαq Activation of the Gs-coupled adenosine 2B receptor and the Gq-coupled muscarinic acetylcholine M1 receptor inhibited the activity of TRPM3 heterologously expressed in HEK293 cells. This inhibition was prevented when the Gβγ sink βARK1-ct (C terminus of β-adrenergic receptor kinase-1) was coexpressed with TRPM3. In neurons isolated from mouse dorsal root ganglion (DRG), native TRPM3 channels were inhibited by activating Gs-coupled prostaglandin-EP2 and Gq-coupled bradykinin B2 (BK2) receptors. The Gi/o inhibitor pertussis toxin and inhibitors of PKA and PKC had no effect on EP2- and BK2-mediated inhibition of TRPM3, demonstrating that the receptors did not act through Gαi/o or through the major protein kinases activated downstream of G-protein-coupled receptor (GPCR) activation. When DRG neurons were dialyzed with GRK2i, which sequesters free Gβγ protein, TRPM3 inhibition by EP2 and BK2 was significantly reduced. Intraplantar injections of EP2 or BK2 agonists inhibited both the nocifensive response evoked by TRPM3 agonists, and the heat hypersensitivity produced by Freund's Complete Adjuvant (FCA). Furthermore, FCA-induced heat hypersensitivity was completely reversed by the selective TRPM3 antagonist ononetin in WT mice and did not develop in Trpm3-/- mice. Our results demonstrate that TRPM3 is subject to promiscuous inhibition by Gβγ protein in heterologous expression systems, primary neurons and in vivo, and suggest a critical role for this ion channel in inflammatory heat hypersensitivity.SIGNIFICANCE STATEMENT The ion channel TRPM3 is widely expressed in the nervous system. Recent studies showed that Gαi/o-coupled GPCRs inhibit TRPM3 through a direct interaction between Gβγ subunits and TRPM3. Since Gβγ proteins can be liberated from other Gα subunits than Gαi/o, we examined whether activation of Gs- and Gq-coupled receptors also influence TRPM3 via Gβγ. Our results demonstrate that activation of Gs- and Gq-coupled GPCRs in recombinant cells and sensory neurons inhibits TRPM3 via Gβγ liberation. We also demonstrated that Gs- and Gq-coupled receptors inhibit TRPM3 in vivo, thereby reducing pain produced by activation of TRPM3, and inflammatory heat hypersensitivity. Our results identify Gβγ inhibition of TRPM3 as an effector mechanism shared by the major Gα subunits.
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Affiliation(s)
- Omar Alkhatib
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, United Kingdom, and
| | - Robson da Costa
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, United Kingdom, and
- School of Pharmacy, Universidade Federal do Rio de Janeiro, 21941-908 Rio de Janeiro, Brazil
| | - Clive Gentry
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, United Kingdom, and
| | - Talisia Quallo
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, United Kingdom, and
| | - Stuart Bevan
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, United Kingdom, and
| | - David A Andersson
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, United Kingdom, and
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Wheeler DW, Bhatia A, Mani V, Kinna S, Bell A, Boyle Y, Chizh BA, Menon DK, Lee MC. Evaluation of Postsurgical Hyperalgesia and Sensitization After Open Inguinal Hernia Repair: A Useful Model for Neuropathic Pain? J Pain 2019; 20:1199-1208. [PMID: 31005594 DOI: 10.1016/j.jpain.2019.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 02/02/2019] [Accepted: 03/11/2019] [Indexed: 10/27/2022]
Abstract
Cutaneous mechanical hyperalgesia can be induced in healthy volunteers in early phase analgesic studies to model central sensitization, a key mechanism of persistent pain. However, such hyperalgesia is short-lived (a matter of hours), and is used only for assessing only single drug doses. In contrast, postsurgical peri-incisional hyperalgesia may be more persistent and hence be a more useful model for the assessment of the efficacy of new analgesics. We undertook quantitative sensory testing in 18 patients at peri-incisional and nonoperated sites before open inguinal hernia repair and up to the 24th postsurgical week. The spatial extent of punctate hyperalgesia and brush allodynia at the peri-incisional site were greatest at weeks 2 and 4, but had resolved by week 24. Heat allodynia, suggestive of local inflammation or peripheral sensitization, was not observed; instead, there were deficits in cold and heat sensory detection that persisted until week 24. The findings suggest that central sensitization contributes significantly to mechanical hyperalgesia at the peri-incisional site. The prolonged duration of hyperalgesia would be advantageous as a pain model, but there was considerable variability of mechanical hyperalgesia in the cohort; the challenges of recruitment may limit its use to small, early phase analgesic studies. PERSPECTIVE: Peri-incisional mechanical hyperalgesia persists for ≥4 weeks after open inguinal hernia repair and reflects central sensitization; this may have usefulness as a model of chronic pain to assess the potential of antineuropathic analgesics.
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Affiliation(s)
| | - Anuj Bhatia
- Department of Anesthesia and Pain Medicine, University of Toronto and Toronto Western Hospital, Toronto, Ontario, Canada
| | | | - Sara Kinna
- Department of Anaesthesia, Addenbrooke's Hospital, Cambridge, UK
| | - Andrew Bell
- Department of Anaesthesia, Addenbrooke's Hospital, Cambridge, UK
| | - Yvonne Boyle
- Addenbrooke's Centre for Clinical Investigation (GlaxoSmithKline), Cambridge, UK
| | - Boris A Chizh
- Addenbrooke's Centre for Clinical Investigation (GlaxoSmithKline), Cambridge, UK
| | - David K Menon
- Division of Anaesthesia, University of Cambridge, Cambridge, UK
| | - Michael C Lee
- Division of Anaesthesia, University of Cambridge, Cambridge, UK.
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Abstract
Chronic neuropathic pain is a burden to millions of patients every day. Patients with neuropathic pain will also experience acute pain throughout their everyday lives adding to their nociceptive burden. Using nociceptive models in mice this study aimed to investigate the relationship between acute visceral pain and chronic neuropathic pain in spontaneous and affective behaviors. Neuropathic pain was induced by chronic constriction injury (CCI) of the sciatic nerve of C57BL/6J male mice and examined in assays of acetic acid (AA)-induced stretching or conditioned place aversion to assess nociceptive and aversive behaviors. Stretching induced by a low concentration (0.32%) of AA given intraperitoneally was significantly increased in CCI and paclitaxel-treated animals compared to control animals. A higher concentration (1.2%) of AA was able to induce stretching equally in both neuropathic and control mice. In the conditioned place aversion test, an AA concentration of 0.32% did not induce place aversion in either sham or CCI animals. However, the 1.2% concentration of AA-induced higher place aversion scores in CCI mice compared to sham mice. No difference in place conditioning was observed between paclitaxel and vehicle-treated mice. Overall, our results show that peripheral nerve injury and paclitaxel treatment induces hypersensitivity to AA-induced nociception and place aversion.
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Affiliation(s)
- Cenk Onur Gurdap
- Department of Biological Sciences, Middle East Technical University, Ankara, 06800, Turkey
| | | | - Bradley Neddenriep
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Deniz Bagdas
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - M. Imad Damaj
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, 23298, USA
- Translational Research Initiative for Pain and Neuropathy at VCU
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