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Wang Q, Li Z, Nie D, Mu X, Wang Y, Jiang Y, Zhang Y, Lu Z. Low-frequency electroacupuncture exerts antinociceptive effects through activation of POMC neural circuit induced endorphinergic input to the periaqueductal gray from the arcuate nucleus. Mol Pain 2024; 20:17448069241254201. [PMID: 38670551 PMCID: PMC11102703 DOI: 10.1177/17448069241254201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 03/12/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
It has been widely recognized that electroacupuncture (EA) inducing the release of β-endorphin represents a crucial mechanism of EA analgesia. The arcuate nucleus (ARC) in the hypothalamus is a vital component of the endogenous opioid peptide system. Serving as an integration center, the periaqueductal gray (PAG) receives neural fiber projections from the frontal cortex, insular cortex, and ARC. However, the specific mechanisms how EA facilitates the release of β-endorphin within the ARC, eliciting analgesic effects are yet to be elucidated. In this study, we conducted in vivo and in vitro experiments by transcriptomics, microdialysis, photogenetics, chemical genetics, and calcium imaging, combined with transgenic animals. Firstly, we detected 2 Hz EA at the Zusanli (ST36) increased the level of β-endorphin and transcriptional level of proopiomelanocortin (POMC). Our transcriptomics profiling demonstrated that 2 Hz EA at the ST36 modulates the expression of c-Fos and Jun B in ARC brain nuclear cluster, and the transcriptional regulation of 2 Hz EA mainly occur in POMC neurons by Immunofluorescence staining verification. Meaning while, 2 Hz EA specifically activated the cAMP-PKA-CREB signaling pathway in ARC which mediating the c-Fos and Jun B transcription, and 2 Hz EA analgesia is dependent on the activation of cAMP-PKA-CREB signaling pathway in ARC. In order to investigate how the β-endorphin produced in ARC transfer to integration center PAG, transneuronal tracing technology was used to observe the 2 Hz EA promoted the neural projection from ARC to PAG compared to 100 Hz EA and sham mice. Inhibited PAGGABA neurons, the transfer of β-endorphin from the ARC nucleus to the PAG nucleus through the ARCPOMC-PAGGABA neural circuit. Furthermore, by manipulating the excitability of POMC neurons from ARCPOMC to PAGGABA using inhibitory chemogenetics and optogenetics, we found that this inhibition significantly reduced transfer of β-endorphin from the ARC nucleus to the PAG nucleus and the effectiveness of 2 Hz EA analgesia in neurological POMC cyclization recombination enzyme (Cre) mice and C57BL/6J mice, which indicates that the transfer of β-endorphin depends on the activation of POMC neurons prefect from ARCPOMC to PAGGABA. These findings contribute to our understanding of the neural circuitry underlying the EA pain-relieving effects and maybe provide valuable insights for optimizing EA stimulation parameters in clinical pain treatment using the in vivo dynamic visual investigating the central analgesic mechanism.
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Affiliation(s)
- Qian Wang
- Shandong University of Traditional Chinese Medicine, Nanjing, China
| | - Zhonghao Li
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Research, Peking University, Beijing, China
- School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Dengyun Nie
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xinru Mu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuxuan Wang
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yongwei Jiang
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yongchen Zhang
- Shandong University of Traditional Chinese Medicine, Nanjing, China
| | - Zhigang Lu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
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2
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Yamakita S, Fujita D, Sudo K, Ishikawa D, Kushimoto K, Horii Y, Amaya F. Activation of neurons and satellite glial cells in the DRG produces morphine-induced hyperalgesia. Mol Pain 2023; 19:17448069231181973. [PMID: 37254240 PMCID: PMC10291868 DOI: 10.1177/17448069231181973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/18/2023] [Accepted: 05/29/2023] [Indexed: 06/01/2023] Open
Abstract
Activation of neurons and glial cells in the dorsal root ganglion is one of the key mechanisms for the development of hyperalgesia. The aim of the present study was to examine the role of neuroglial activity in the development of opioid-induced hyperalgesia. Male rats were treated with morphine daily for 3 days. The resultant phosphorylation of extracellular signal-regulated kinase (ERK) 1/2 in the dorsal root ganglion was analyzed by immunohistochemistry and Western blotting. Pain hypersensitivity was analyzed using behavioral studies. The amount of cytokine expression in the dorsal root ganglion was also analyzed. Repeated morphine treatment induced hyperalgesia and marked induction of phosphorylated ERK1/2 in the neurons and satellite glial cells on day 3. An opioid receptor antagonist, toll like receptor-4 inhibitor, MAP/ERK kinase (MEK) inhibitor and gap junction inhibitor inhibited morphine-induced hyperalgesia and ERK1/2 phosphorylation. Morphine treatment induced alteration of cytokine expression, which was inhibited by the opioid receptor antagonist, toll like receptor-4 inhibitor, MEK inhibitor and gap junction inhibitor. Dexamethasone inhibited morphine-induced hyperalgesia and ERK1/2 phosphorylation after morphine treatment. The peripherally restricted opioid receptor antagonist, methylnaltrexone, inhibited hyperalgesia and ERK1/2 phosphorylation. Morphine activates ERK1/2 in neurons and satellite glial cells in the dorsal root ganglion via the opioid receptor and toll like receptor-4. ERK1/2 phosphorylation is gap junction-dependent and is associated with the alteration of cytokine expression. Inhibition of neuroinflammation by activation of neurons and glia might be a promising target to prevent opioid-induced hyperalgesia.
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Affiliation(s)
- Shunsuke Yamakita
- Department of Anesthesiology, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
- Research Unit for the Neurobiology of Pain, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Daisuke Fujita
- Department of Anesthesiology, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
- Research Unit for the Neurobiology of Pain, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuki Sudo
- Department of Anesthesiology, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Daiki Ishikawa
- Department of Anesthesiology, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
- Research Unit for the Neurobiology of Pain, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kohsuke Kushimoto
- Department of Anesthesiology, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
- Research Unit for the Neurobiology of Pain, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yasuhiko Horii
- Department of Anesthesiology, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
- Research Unit for the Neurobiology of Pain, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Fumimasa Amaya
- Research Unit for the Neurobiology of Pain, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Pain Management and Palliative Care Medicine, institution-id-type="Ringgold" />Kyoto Prefectural University of Medicine, Kyoto, Japan
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3
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Liu W, Jiang P, Qiu L. Blocking of Caveolin-1 Attenuates Morphine-Induced Inflammation, Hyperalgesia, and Analgesic Tolerance via Inhibiting NLRP3 Inflammasome and ERK/c-JUN Pathway. J Mol Neurosci 2022; 72:1047-1057. [PMID: 35262905 DOI: 10.1007/s12031-022-01989-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/23/2022] [Indexed: 12/21/2022]
Abstract
Morphine is generally used to treat chronic pain in clinic. But long-term use of morphine can inevitably induce analgesic tolerance and hyperalgesia. Caveolin-1 is reported to affect morphine-mediated signaling transduction. However, the action mechanism of morphine-induced analgesic tolerance is still unknown. In this study, morphine-induced analgesic tolerance model was established in Sprague-Dawley rats. The effects of Caveolin-1 blocking on neuroinflammation and ERK/c-JUN pathway were then explored. Morphine can remarkably elevate the expression level of Caveolin-1. Based on paw withdrawal latency behavior test, we found that Caveolin-1 blocking can effectively attenuate morphine-induced analgesic tolerance and neuroinflammation. Activation of ERK/c-JUN significantly reversed the above influences caused by Caveolin-1 blocking. Taken together, blocking of Caveolin-1 can attenuate morphine-induced inflammation and analgesic tolerance through inhibiting NLRP3 inflammasome and ERK/c-JUN pathway.
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Affiliation(s)
- Wenling Liu
- Department of Anestyesiology, HuiZhou Municipal Central Hospital, No. 41, Eling North Road, Huizhou City, Guangdong Province, 516001, China
| | - Peng Jiang
- Department of Anestyesiology, HuiZhou Municipal Central Hospital, No. 41, Eling North Road, Huizhou City, Guangdong Province, 516001, China
| | - Liuji Qiu
- Department of Anestyesiology, HuiZhou Municipal Central Hospital, No. 41, Eling North Road, Huizhou City, Guangdong Province, 516001, China.
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4
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Laboureyras E, Boujema MB, Mauborgne A, Simmers J, Pohl M, Simonnet G. Fentanyl-induced hyperalgesia and analgesic tolerance in male rats: common underlying mechanisms and prevention by a polyamine deficient diet. Neuropsychopharmacology 2022; 47:599-608. [PMID: 34621016 PMCID: PMC8674360 DOI: 10.1038/s41386-021-01200-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/20/2021] [Accepted: 09/24/2021] [Indexed: 01/03/2023]
Abstract
Opioids are a mainstay of pain management but can induce unwanted effects, including analgesic tolerance and paradoxical hyperalgesia, either of which leads to increased pain. Clinically, however, the relationship between these two phenomena remains elusive. By evaluating changes in mechanical nociceptive threshold in male rats, we found that in contrast to a purely analgesic control response to a single subcutaneous administration of fentanyl (25 μg/kg), in rats subjected to inflammatory pain 2 weeks previously (Day0), the same test dose (D13) induced a bi-phasic response: initial decreased analgesia (tolerance) followed by hyperalgesia lasting several hours. Both the tolerance and hyperalgesia were further enhanced in rats that had additionally received fentanyl on D0. The dose-response profiles (5 fg to 50 μg/kg) of pain- and opioid-experienced rats were very different from pain/drug-naive rats. At ultra-low fentanyl doses (<5 ng/kg and <500 ng/kg for naïve control and pain/drug-experienced rats, respectively), solely hyperalgesia was observed in all cases. At higher doses, which now produced analgesia alone in naive rats, reduced analgesia (tolerance) coupled with hyperalgesia occurred in pain/fentanyl-experienced rats, with both phases increasing with dose. Transcriptomic and pharmacological data revealed that an overactivation of the spinal N-methyl-D-aspartate receptor-inducible NO synthase cascade plays a critical role in both acute tolerance and hyperalgesia, and together with the finding that the magnitudes of analgesia and associated hyperalgesia are negatively correlated, is indicative of closely related phenomena. Finally, a polyamine deficient diet prevented inducible NO synthase transcript upregulation, restored fentanyl's analgesic efficacy and suppressed the emergence of hyperalgesia.
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Affiliation(s)
- Emilie Laboureyras
- grid.462004.40000 0004 0383 7404Univ. de Bordeaux, INCIA, 33076 Bordeaux, France ,grid.462004.40000 0004 0383 7404CNRS, INCIA, UMR 5287, 33076 Bordeaux, France
| | - Meric Ben Boujema
- grid.462004.40000 0004 0383 7404Univ. de Bordeaux, INCIA, 33076 Bordeaux, France ,grid.462004.40000 0004 0383 7404CNRS, INCIA, UMR 5287, 33076 Bordeaux, France
| | - Annie Mauborgne
- grid.462844.80000 0001 2308 1657Univ. Pierre et Marie Curie, INSERM UMRS 975, 75013 Paris, France
| | - John Simmers
- grid.462004.40000 0004 0383 7404Univ. de Bordeaux, INCIA, 33076 Bordeaux, France ,grid.462004.40000 0004 0383 7404CNRS, INCIA, UMR 5287, 33076 Bordeaux, France
| | - Michel Pohl
- grid.508487.60000 0004 7885 7602Univ. Paris Descartes, INSERM UMR 894, 75014 Paris, France
| | - Guy Simonnet
- Univ. de Bordeaux, INCIA, 33076, Bordeaux, France. .,CNRS, INCIA, UMR 5287, 33076, Bordeaux, France.
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5
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Ram A, Edwards TM, McCarty A, McDermott MV, Bobeck EN. Morphine-induced kinase activation and localization in the periaqueductal gray of male and female mice. J Neurochem 2021; 159:590-602. [PMID: 34499746 DOI: 10.1111/jnc.15506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 12/17/2022]
Abstract
Morphine is a potent opioid analgesic with high propensity for the development of antinociceptive tolerance. Morphine antinociception and tolerance are partially regulated by the midbrain ventrolateral periaqueductal gray (vlPAG). However, the majority of research evaluating mu-opioid receptor signaling has focused on males. Here, we investigate kinase activation and localization patterns in the vlPAG following acute and chronic morphine treatment in both sexes. Male and female mice developed rapid antinociceptive tolerance to morphine (10 mg/kg i.p.) on the hot plate assay, but tolerance did not develop in males on the tail flick assay. Quantitative fluorescence immunohistochemistry was used to map and evaluate the activation of extracellular signal-regulated kinase 1/2 (ERK 1/2), protein kinase-C (PKC), and protein kinase-A (PKA). We observed significantly greater phosphorylated ERK 1/2 in the vlPAG of chronic morphine-treated animals which co-localized with the endosomal marker, Eea1. We note that pPKC is significantly elevated in the vlPAG of both sexes following chronic morphine treatment. We also observed that although PKA activity is elevated following chronic morphine treatment in both sexes, there is a significant reduction in the nuclear translocation of its phosphorylated substrate. Taken together, this study demonstrates increased activation of ERK 1/2, PKC, and PKA in response to repeated morphine treatment. The study opens avenues to explore the impact of chronic morphine treatment on G-protein signaling and kinase nuclear transport.
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Affiliation(s)
- Akila Ram
- Department of Biology, Utah State University, Logan, Utah, USA
| | | | - Ashley McCarty
- Department of Biology, Utah State University, Logan, Utah, USA
| | - Max V McDermott
- Department of Biology, Utah State University, Logan, Utah, USA
- Interdisciplinary Neuroscience Program, Utah State University, Logan, Utah, USA
| | - Erin N Bobeck
- Department of Biology, Utah State University, Logan, Utah, USA
- Interdisciplinary Neuroscience Program, Utah State University, Logan, Utah, USA
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6
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Abstract
Understanding the molecular biology of opioid analgesia is essential for its proper implementation and mechanistic approach to its modulation in order to maximize analgesia and minimize undesired effects. By appreciating the molecular mechanisms intrinsic to opioid analgesia, one can manipulate a molecular target to augment or diminish a specific effect using adjuvant drugs, select an appropriate opioid for opioid rotation or define a molecular target for new opioid drug development. In this review, we present the cellular and molecular mechanisms of opioid analgesia and that of the associated phenomena of tolerance, dependence, and hyperalgesia. The specific mechanisms highlighted are those that presently can be clinically addressed.
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7
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Stine C, Coleman DL, Flohrschutz AT, Thompson AL, Mishra S, Blagg BS, Largent-Milnes TM, Lei W, Streicher JM. Heat shock protein 90 inhibitors block the antinociceptive effects of opioids in mouse chemotherapy-induced neuropathy and cancer bone pain models. Pain 2020; 161:1798-1807. [PMID: 32701840 PMCID: PMC8607824 DOI: 10.1097/j.pain.0000000000001886] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Heat shock protein 90 (Hsp90) is a ubiquitous signal transduction regulator, and Hsp90 inhibitors are in clinical development as cancer therapeutics. However, there have been very few studies on the impact of Hsp90 inhibitors on pain or analgesia, a serious concern for cancer patients. We previously found that Hsp90 inhibitors injected into the brain block opioid-induced antinociception in tail flick, paw incision, and HIV neuropathy pain. This study extended from that initial work to test the cancer-related clinical impact of Hsp90 inhibitors on opioid antinociception in cancer-induced bone pain in female BALB/c mice and chemotherapy-induced peripheral neuropathy in male and female CD-1 mice. Mice were treated with Hsp90 inhibitors (17-AAG, KU-32) by the intracerebroventricular, intrathecal, or intraperitoneal routes, and after 24 hours, pain behaviors were evaluated after analgesic drug treatment. Heat shock protein 90 inhibition in the brain or systemically completely blocked morphine and oxymorphone antinociception in chemotherapy-induced peripheral neuropathy; this effect was partly mediated by decreased ERK and JNK MAPK activation and by increased protein translation, was not altered by chronic treatment, and Hsp90 inhibition had no effect on gabapentin antinociception. We also found that the Hsp90 isoform Hsp90α and the cochaperone Cdc37 were responsible for the observed changes in opioid antinociception. By contrast, Hsp90 inhibition in the spinal cord or systemically partially reduced opioid antinociception in cancer-induced bone pain. These results demonstrate that Hsp90 inhibitors block opioid antinociception in cancer-related pain, suggesting that Hsp90 inhibitors for cancer therapy could decrease opioid treatment efficacy.
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Affiliation(s)
- Carrie Stine
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
| | - Deziree L. Coleman
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
| | - Austin T. Flohrschutz
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
| | - Austen L. Thompson
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
| | - Sanket Mishra
- Department of Chemistry and Biochemistry, College of Science, University of Notre Dame, Notre Dame, IN 46556 USA
| | - Brian S. Blagg
- Department of Chemistry and Biochemistry, College of Science, University of Notre Dame, Notre Dame, IN 46556 USA
| | - Tally M. Largent-Milnes
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
| | - Wei Lei
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
- Department of Pharmaceutical and Administrative Sciences, School of Pharmacy, Presbyterian College, Clinton, SC 29325 USA
| | - John M. Streicher
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
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8
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Iftinca M, Basso L, Flynn R, Kwok C, Roland C, Hassan A, Defaye M, Ramachandran R, Trang T, Altier C. Chronic morphine regulates TRPM8 channels via MOR-PKCβ signaling. Mol Brain 2020; 13:61. [PMID: 32290846 PMCID: PMC7155267 DOI: 10.1186/s13041-020-00599-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/02/2020] [Indexed: 02/05/2023] Open
Abstract
Postoperative shivering and cold hypersensitivity are major side effects of acute and chronic opioid treatments respectively. TRPM8 is a cold and menthol-sensitive channel found in a subset of dorsal root ganglion (DRG) nociceptors. Deletion or inhibition of the TRPM8 channel was found to prevent the cold hyperalgesia induced by chronic administration of morphine. Here, we examined the mechanisms by which morphine was able to promote cold hypersensitivity in DRG neurons and transfected HEK cells. Mice daily injected with morphine for 5 days developed cold hyperalgesia. Treatment with morphine did not alter the expressions of cold sensitive TREK-1, TRAAK and TRPM8 in DRGs. However, TRPM8-expressing DRG neurons isolated from morphine-treated mice exhibited hyperexcitability. Sustained morphine treatment in vitro sensitized TRPM8 responsiveness to cold or menthol and reduced activation-evoked desensitization of the channel. Blocking phospholipase C (PLC) as well as protein kinase C beta (PKCβ), but not protein kinase A (PKA) or Rho-associated protein kinase (ROCK), restored channel desensitization. Identification of two PKC phosphorylation consensus sites, S1040 and S1041, in the TRPM8 and their site-directed mutation were able to prevent the MOR-induced reduction in TRPM8 desensitization. Our results show that activation of MOR by morphine 1) promotes hyperexcitability of TRPM8-expressing neurons and 2) induces a PKCβ-mediated reduction of TRPM8 desensitization. This MOR-PKCβ dependent modulation of TRPM8 may underlie the onset of cold hyperalgesia caused by repeated administration of morphine. Our findings point to TRPM8 channel and PKCβ as important targets for opioid-induced cold hypersensitivity.
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Affiliation(s)
- Mircea Iftinca
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Lilian Basso
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Robyn Flynn
- Hotchkiss Brain Institute. Cumming School of Medicine. University of Calgary, Calgary, Alberta, T2N 4N1, Canada
| | - Charlie Kwok
- Hotchkiss Brain Institute. Cumming School of Medicine. University of Calgary, Calgary, Alberta, T2N 4N1, Canada
| | - Corinne Roland
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Ahmed Hassan
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Manon Defaye
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Rithwik Ramachandran
- Department of Physiology and Pharmacology. Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, N6A 5C1, Canada
| | - Tuan Trang
- Hotchkiss Brain Institute. Cumming School of Medicine. University of Calgary, Calgary, Alberta, T2N 4N1, Canada
| | - Christophe Altier
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada.
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9
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Chen QY, Zhang ZL, Liu Q, Chen CJ, Zhang XK, Xu PY, Zhuo M. Presynaptic long-term potentiation requires extracellular signal-regulated kinases in the anterior cingulate cortex. Mol Pain 2020; 16:1744806920917245. [PMID: 32264746 PMCID: PMC7144679 DOI: 10.1177/1744806920917245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Extracellular signal-regulated kinases are widely expressed protein kinases in neurons, which serve as important intracellular signaling molecules for central plasticity such as long-term potentiation. Recent studies demonstrate that there are two major forms of long-term potentiation in cortical areas related to pain: postsynaptic long-term potentiation and presynaptic long-term potentiation. In particular, presynaptic long-term potentiation in the anterior cingulate cortex has been shown to contribute to chronic pain-related anxiety. In this review, we briefly summarized the components and roles of extracellular signal-regulated kinases in neuronal signaling, especially in the presynaptic long-term potentiation of anterior cingulate cortex, and discuss the possible molecular mechanisms and functional implications in pain-related emotional disorders.
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Affiliation(s)
- Qi-Yu Chen
- Center for Neuron and Disease, Frontier Institutes of Science and Technology, Xi'an Jiaotong University, Xi'an, China.,Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Zhi-Ling Zhang
- Department of Neurology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qin Liu
- Department of Neurology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chao-Jun Chen
- Department of Neurology, Guangzhou Chinese Medical Integrated Hospital (Huadu), Guangdong, China
| | - Xiao-Kang Zhang
- The First Affiliated Hospital of Gan-Nan Medical University, Ganzhopu, China
| | - Ping-Yi Xu
- Department of Neurology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Min Zhuo
- Center for Neuron and Disease, Frontier Institutes of Science and Technology, Xi'an Jiaotong University, Xi'an, China.,Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Department of Neurology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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10
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Bagherpasand N, Mehri S, Jafari Shahroudi M, Tabatabai SM, Khezri A, Fathi M, Abnous K, Imenshahidi M, Hosseinzadeh H. Effect of Topiramate on Morphine-induced Conditioned Place Preference (CPP) in Rats: Role of ERK and CREB Proteins in Hippocampus and Cerebral Cortex. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2020; 18:2000-2010. [PMID: 32184865 PMCID: PMC7059042 DOI: 10.22037/ijpr.2019.1100873] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this study, the effect of topiramate, as an antiepileptic drug, was evaluated on morphine craving in rats. The conditioned place preference (CPP) test was used for this purpose. Repeated administration of morphine (10 mg/kg, i.p. for 4 days) induced significant CPP. Administration of topiramate (50 and 100 mg/kg, i.p. for 4 days) with each morphine administration decreased the acquisition of morphine-induced CPP. At the next step, the levels of extracellular signal-regulated kinase (ERK), p-ERK, cAMP responsive element binding (CREB), and p-CREB proteins were evaluated in hippocampus and cerebral cortex using western blot analysis. Following the repeated administration of morphine, the level of p-ERK protein markedly enhanced in both tissues, while topiramate could significantly reduce the phosphorylation of ERK in these brain regions. Additionally, the level of CREB and p-CREB proteins did not change in different groups. Memantine as a positive control reduced the acquisition of morphine-induced CPP. Also, memantine significantly decreased the level of p-ERK protein in hippocampus and cerebral cortex. These results demonstrated that topiramate can attenuate the acquisition of morphine-induced CPP in rats. This effect in part can be mediated through down regulation of p-ERK protein in hippocampus and cerebral cortex.
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Affiliation(s)
- Nima Bagherpasand
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Soghra Mehri
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Division of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahdieh Jafari Shahroudi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Meghdad Tabatabai
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Khezri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Fathi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Imenshahidi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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11
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Liu Q, Du G, Xiao R, Liu Y, Cao K, Du X, Tang S, Huang W, Wang X. Injection of D1 receptor antagonist SCH23390 into the periaqueductal gray attenuates morphine withdrawal symptoms in rats. Neurosci Lett 2020; 714:134502. [DOI: 10.1016/j.neulet.2019.134502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 08/30/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
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12
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Emery MA, Eitan S. Drug-specific differences in the ability of opioids to manage burn pain. Burns 2019; 46:503-513. [PMID: 31859093 DOI: 10.1016/j.burns.2019.03.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 03/04/2019] [Accepted: 03/30/2019] [Indexed: 12/17/2022]
Abstract
Burn injury pain is a significant public health problem. Burn injury treatment has improved tremendously in recent decades. However, an unintended consequence is that a larger number of patients now survive more severe injuries, and face intense pain that is very hard to treat. Although many efforts have been made to find alternative treatments, opioids remain the most effective medication available. Burn patients are frequently prescribed opioids in doses and durations that are significantly higher and longer than standard analgesic dosing guidelines. Despite this, many continue to experience unrelieved pain. They are also placed at a higher risk for developing dependence and opioid use disorder. Burn injury profoundly alters the functional state of the immune system. It also alters the expression levels of receptor, effector, and signaling molecules within the spinal cord's dorsal horn. These alterations could explain the reduced potency of opioids. However, recent studies demonstrate that different opioids signal preferentially via differential signaling pathways. This ligand-specific signaling by different opioids implies that burn injury may reduce the antinociceptive potency of opioids to different degrees, in a drug-specific manner. Indeed, recent findings hint at drug-specific differences in the ability of opioids to manage burn pain early after injury, as well as differences in their ability to prevent or treat the development of chronic and neuropathic pain. Here we review the current state of opioid treatment, as well as new findings that could potentially lead to opioid-based pain management strategies that may be significantly more effective than the current solutions.
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Affiliation(s)
- Michael A Emery
- Behavioral and Cellular Neuroscience, Department of Psychological and Brain Sciences, Texas A&M University, 4235 TAMU, College Station, TX 77843, USA; Interdisciplinary Program in Neuroscience, Texas A&M Institute for Neuroscience (TAMIN), USA
| | - Shoshana Eitan
- Behavioral and Cellular Neuroscience, Department of Psychological and Brain Sciences, Texas A&M University, 4235 TAMU, College Station, TX 77843, USA; Interdisciplinary Program in Neuroscience, Texas A&M Institute for Neuroscience (TAMIN), USA.
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13
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de Freitas BG, Pereira LM, Santa-Cecília FV, Hösch NG, Picolo G, Cury Y, Zambelli VO. Mitogen-Activated Protein Kinase Signaling Mediates Morphine Induced-Delayed Hyperalgesia. Front Neurosci 2019; 13:1018. [PMID: 31616243 PMCID: PMC6763729 DOI: 10.3389/fnins.2019.01018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/09/2019] [Indexed: 12/13/2022] Open
Abstract
The use of morphine, the standard opioid drug, is limited by its undesirable effects, such as tolerance, physical dependence, and hyperalgesia (increased pain sensitivity). Clinical and preclinical studies have reported development of hyperalgesia after prolonged opioid administration or after a single dose of intrathecal (i.t.) morphine in uninjured rats. However, whether a single standard systemic morphine dose is sufficient to decrease the nociceptive threshold in rats is unknown. Here, we showed that a single morphine subcutaneous injection induces analgesia followed by a long-lasting delayed hyperalgesia in uninjured and PGE2 sensitized rats. The i.t injection of extracellular signal-regulated kinase (ERK) inhibitor blocked morphine-induced analgesia, without interfering with the morphine-induced hyperalgesia. However, i.t. injection of SB20358, a p38 inhibitor and SP660125, a JNK inhibitor, decreased the morphine-induced hyperalgesia. Consistently with the behavioral data, Western Blot analysis showed that ERK is more phosphorylated 1 h after morphine, i.e., when the analgesia is detected. Moreover, phospho-p38 and phospho-JNK levels are upregulated 96 h after morphine injection, time that coincides with the hyperalgesic effect. Intrathecal (i.t.) oligodeoxynucleotide (ODN) antisense to cAMP-responsive element binding protein (CREB) attenuated morphine-induced hyperalgesia. Real-time polymerase chain reaction (RT-PCR) analysis showed that CREB downstream genes expressions were significantly up-regulated 96 h after morphine injection in spinal cord. Together, our data suggest that central ERK is involved in the analgesic and hyperalgesic effects of morphine while JNK, p38, and CREB are involved in the morphine-induced delayed hyperalgesia.
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Affiliation(s)
| | | | | | | | - Gisele Picolo
- Laboratório Especial de Dor e Sinalização, Instituto Butantan, São Paulo, Brazil
| | - Yara Cury
- Laboratório Especial de Dor e Sinalização, Instituto Butantan, São Paulo, Brazil
| | - Vanessa O Zambelli
- Laboratório Especial de Dor e Sinalização, Instituto Butantan, São Paulo, Brazil
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14
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Sanna MD, Borgonetti V, Galeotti N. μ Opioid Receptor-Triggered Notch-1 Activation Contributes to Morphine Tolerance: Role of Neuron–Glia Communication. Mol Neurobiol 2019; 57:331-345. [DOI: 10.1007/s12035-019-01706-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 07/10/2019] [Indexed: 01/07/2023]
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15
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Dowdle LT, Borckardt JJ, Back SE, Morgan K, Adams D, Madan A, Balliet W, Hanlon CA. Sensitized brain response to acute pain in patients using prescription opiates for chronic pain: A pilot study. Drug Alcohol Depend 2019; 200:6-13. [PMID: 31071496 PMCID: PMC6914256 DOI: 10.1016/j.drugalcdep.2019.02.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Chronic opiate use leads to a sensitized behavioral response to acute pain, which in turn, leads to escalating doses of opiates. This study was designed to test the hypothesis that chronic opiate usage is also associated with a sensitized neurobiological response to acute pain in individuals that have used prescription opiates for 6 or more months. METHODS Fourteen patients with non-alcoholic chronic pancreatitis that have been taking prescription opiates for 6 or more months and 14 gender matched, non-opiate using controls were enrolled. Functional neuroimaging data was acquired while participants received blocks of thermal stimulation to their wrist (individually-tailored to their pain threshold). RESULTS Self-reported pain was significantly greater in opiate using patients (3.4 ± 3.4) than controls (0.2 ± 0.8: Brief Pain Inventory p < 0.005), however no significant difference between groups was observed in the individually-tailored pain thresholds. Opiate using patients evidenced a significantly greater response to pain than controls in two established nodes of the "Pain Matrix": somatosensory cortex (pFWE≤0.001) and anterior cingulate cortex (p ≤ 0.01). This response was positively correlated with prescribed morphine equivalent dosages (average: 133.5 ± 94.8 mg/day). CONCLUSION The findings suggest that in chronic pancreatitis patients, a dose of opiates that normalizes their behavioral response to acute pain is associated with an amplified neural response to acute pain. Further longitudinal studies are needed to determine if this neural sensitization hastens a behavioral tolerance to opiates or the development of an opioid use disorder.
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Affiliation(s)
- Logan T. Dowdle
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, USA,Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Jeffrey J. Borckardt
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, USA,Center for Biomedical Imaging, Medical University of South Carolina, Charleston, South Carolina, USA,Ralph H. Johnson VA Medical Center, Charleston, South Carolina, USA
| | - Sudie E. Back
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, USA,Ralph H. Johnson VA Medical Center, Charleston, South Carolina, USA
| | - Katherine Morgan
- Department of Surgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - David Adams
- Department of Surgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Alok Madan
- Houston Methodist Behavioral Health, Houston, Texas, USA
| | - Wendy Balliet
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Colleen A. Hanlon
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, USA,Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, USA,Center for Biomedical Imaging, Medical University of South Carolina, Charleston, South Carolina, USA,Ralph H. Johnson VA Medical Center, Charleston, South Carolina, USA
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16
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Ruan J, Chen L, Ma Z. Activation of spinal Extacellular Signal‐Regulated Kinases and c‐jun N‐terminal kinase signaling pathways contributes to morphine‐induced acute and chronic hyperalgesia in mice. J Cell Biochem 2019; 120:15045-15056. [PMID: 31016764 DOI: 10.1002/jcb.28766] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 12/30/2022]
Affiliation(s)
- Jia‐Ping Ruan
- Department of Anesthesiology Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University Nanjing Jiangsu China
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine Nanjing University of Chinese Medicine Nanjing Jiangsu China
| | - Ling Chen
- Laboratory of Reproductive Medicine Nanjing Medical University Nanjing Jiangsu China
| | - Zheng‐liang Ma
- Department of Anesthesiology Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University Nanjing Jiangsu China
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17
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Peng S, Lu Y, Li P, Liu P, Shi X, Liu C, Zhang Y, Liu S, Wang J. The short interference RNA (siRNA) targeting NMUR2 relieves nociception in a bone cancer pain model of rat through PKC-ERK and PI3K-AKT pathways. Biochem Biophys Res Commun 2019; 512:616-622. [PMID: 30914203 DOI: 10.1016/j.bbrc.2019.03.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 03/12/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND/AIM Bone cancer pain (BCP) causes troubles and burdens to patients globally. Increasing evidence proved that neuromedin U receptor 2 (NMUR2) was involved in pains. Our study was performed to investigate the role of NMUR2 on BCP and the underlying mechanism. METHODS The rats were raised and BCP rat model was established by injection with Walker 256 cells. The RNA and protein expression levels of NMUR2 in rat neurons-dorsal spinal cord cells, RNdsc cells were detected by qRT-PCR and western blot. The administration with NMUR2 was via intrathecal injection with siRNA to silence NMUR2. The tolerance of rat to pain was measured by mechanical allodynia test and presented by paw withdrawal threshold (PWT) value. The effects on protein kinase C (PKC)/extracellular regulated protein kinases (ERK) and phosphatidylinositol-3-kinase (PI3K)/protein kinase B (AKT) signal pathways were examined by western blot. RESULTS The expression of NMUR2 in both mRNA and protein levels was upregulated in BCP rat model. In addition, siRNA injection significantly decreased the expression of NMUR2 on the 3rd, 7th and 14th day. BCP group revealed lower PWT value compared with control while NMUR2 silence increased the PWT value compared with negative control. The phosphorylation of PKC, ERK, PI3K and AKT was increased in BCP model while was decreased by si-NMUR2. PKC/ERK and PI3K/AKT inhibitor administration increased the PWT value compared with BCP group. CONCLUSION si-NMUR2 alleviates BCP via inactivation of PKC/ERK and PI3K/AKT signal pathways.
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Affiliation(s)
- Sheng Peng
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
| | - Yingjun Lu
- Department of Anesthesiology, Shanghai Songjiang District Central Hospital, No.748 Zhongshan Middle Road, Shanghai, 201600, China.
| | - Pengyi Li
- Department of Anesthesiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research and The Affiliated Cancer Hospital of Nanjing Medical University, No.42 Baiziting, Nanjing, 210009, China
| | - Peirong Liu
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
| | - Xiaowei Shi
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
| | - Chunliang Liu
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
| | - Yu Zhang
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
| | - Shasha Liu
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
| | - Jing Wang
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, No.358 Datong Road, Shanghai, 200137, China
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18
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Bu HL, Xia YZ, Liu PM, Guo HM, Yuan C, Fan XC, Huang C, Wen YY, Kong CL, Wang T, Ma LT, Li XX, Zhang HW, Zhang LR, Ma MY, Ai YQ, Zhang W. The Roles of Chemokine CXCL13 in the Development of Bone Cancer Pain and the Regulation of Morphine Analgesia in Rats. Neuroscience 2019; 406:62-72. [PMID: 30826523 DOI: 10.1016/j.neuroscience.2019.02.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 02/04/2019] [Accepted: 02/18/2019] [Indexed: 11/16/2022]
Abstract
Chemokines are important regulators of immune, inflammatory, and neuronal responses in peripheral and central pain pathway. The aim of this study was to investigate whether chemokine (C-X-C motif) ligand 13 (CXCL13) and its receptor (C-X-C chemokine receptor type 5, CXCR5) involve in the development of bone cancer pain (BCP) and the regulation of morphine analgesia in rats. The change of pain behaviors in BCP rats were measured by testing paw withdrawal threshold (PWT). The levels of CXCL13, CXCR5 and signal pathway proteins (p-p38, p-ERK and p-AKT etc.) in the spinal cord were measured via western blots. The expression of CXCL13 and CXCR5 in spinal cord was increased in BCP rats. The BCP rats showed decrease of PWTs, which was relieved by CXCR5i. Intrathecally injection of murine recombinant CXCL13 (mrCXCL13) decreased the PWTs of BCP rats and opposed morphine-induced analgesia in BCP rats. In BCP rats, the signal pathway proteins (p38, ERK and AKT) in the spinal cord were activated. CXCL13 and morphine had contrary effect on the phosphorylation of these proteins. MrCXCL13 directly increased the levels of p-p38, p-ERK and p-AKT in BCP rats. However, morphine decreased the levels of these proteins in BCP rats. While blocking the activation of p-p38, p-ERK and p-AKT, morphine analgesia was enhanced. These results suggest CXCL13 participated in bone cancer pain and opposed morphine analgesia via p38, ERK and AKT pathways. It may be a target to enhance pain management in cancer pain patients.
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Affiliation(s)
- Hui-Lian Bu
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yu-Zhong Xia
- Department of Anesthesiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Pan-Mei Liu
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Hai-Ming Guo
- Department of Anesthesiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Chang Yuan
- Department of Anesthesiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xiao-Chong Fan
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Chen Huang
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yuan-Yuan Wen
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Cun-Long Kong
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Tao Wang
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Le-Tian Ma
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xin-Xin Li
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Hong-Wei Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Li-Rong Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Min-Yu Ma
- Department of Pain management, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
| | - Yan-Qiu Ai
- Department of Anesthesiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
| | - Wei Zhang
- Department of Anesthesiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
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19
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Aberoumandi SM, Vousooghi N, Tabrizi BA, Karimi P. Heroin-based crack induces hyperalgesia through β-arrestin 2 redistribution and phosphorylation of Erk1/2 and JNK in the periaqueductal gray area. Neurosci Lett 2019; 698:133-139. [PMID: 30641110 DOI: 10.1016/j.neulet.2019.01.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/11/2018] [Accepted: 01/10/2019] [Indexed: 01/23/2023]
Abstract
Continuous use of crack induces hyperalgesia which is related to drug tolerance. Despite cumulative evidence based on the growth rate of crack abuse, no serious study has been focused on the mechanisms of crack-induced hyperalgesia. This study aimed to elucidate whether extracellular signal-regulated kinases (Erk1/2)/β-arrestin pathways are involved in the crack-induced hyperalgesia. Fifty adult male Wistar rats were randomly divided into five groups: normal saline (NS), crack (0.9 mg/kg/day), heroin (1 mg/kg/day), crack + barbadin (100 μM), and heroin + barbadin groups, which received their intraperitoneal (i.p) treatments for four weeks. The thermal sensitivity was assessed using the hot-plate test. Moreover, phosphorylation of the Erk1/2 and JNK, as well as expression of protein kinase C-alpha (PKC-α), Mu-receptor (MOR), and β-arrestin 2 were determined in the whole lysate and membrane fraction using immunoblotting assay in the periaqueductal gray (PAG) area. The results demonstrated that chronic administration of crack and heroin significantly decreased hind-paw withdrawal latency compared to the NS group. Furthermore, crack as well as heroin administration increased phosphorylated Erk1/2 and JNK in the PAG. In addition, membrane β-arrestin 2 and PKC-α were significantly increased in the crack and heroin-received groups, while membrane MOR expression was decreased in the PAG. Nevertheless, co-administration of barbadin, an inhibitor of β-arrestin, and crack or heroin reversed all these changes. Our findings may partially confirm the role of β-arrestin 2 and PKC rearrangements, Erk1/2 and JNK phosphorylation in crack-induced hyperalgesia and provide potential therapeutic targets to attenuate crack-induced hyperalgesia.
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Affiliation(s)
- Seyed Mohsen Aberoumandi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran; Neurosciences Research Center (NSRC), Tabriz University Of Medical Sciences, Tabriz, Iran
| | - Nasim Vousooghi
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahram Amoughli Tabrizi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Pouran Karimi
- Neurosciences Research Center (NSRC), Tabriz University Of Medical Sciences, Tabriz, Iran.
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20
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Singh AK, Kumar S, Vinayak M. Recent development in antihyperalgesic effect of phytochemicals: anti-inflammatory and neuro-modulatory actions. Inflamm Res 2018; 67:633-654. [PMID: 29767332 DOI: 10.1007/s00011-018-1156-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/04/2018] [Accepted: 05/08/2018] [Indexed: 02/08/2023] Open
Abstract
INTRODUCTION Pain is an unpleasant sensation triggered by noxious stimulation. It is one of the most prevalent conditions, limiting productivity and diminishing quality of life. Non steroidal anti inflammatory drugs (NSAIDs) are widely used as pain relievers in present day practice as pain is mostly initiated due to inflammation. However, due to potentially serious side effects, long term use of these antihyperalgesic drugs raises concern. Therefore there is a demand to search novel medicines with least side effects. Herbal products have been used for centuries to reduce pain and inflammation, and phytochemicals are known to cause fewer side effects. However, identification of active phytochemicals of herbal medicines and clear understanding of the molecular mechanism of their action is needed for clinical acceptance. MATERIALS AND METHODS In this review, we have briefly discussed the cellular and molecular changes during hyperalgesia via inflammatory mediators and neuro-modulatory action involved therein. The review includes 54 recently reported phytochemicals with antihyperalgesic action, as per the literature available with PubMed, Google Scholar and Scopus. CONCLUSION Compounds of high interest as potential antihyperalgesic agents are: curcumin, resveratrol, capsaicin, quercetin, eugenol, naringenin and epigallocatechin gallate (EGCG). Current knowledge about molecular targets of pain and their regulation by these phytochemicals is elaborated and the scope of further research is discussed.
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Affiliation(s)
- Ajeet Kumar Singh
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.,Department of Zoology, CMP Degree College, University of Allahabad, Allahabad, 211002, India
| | - Sanjay Kumar
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Manjula Vinayak
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Kim J, Im HI, Moon C. Intravenous morphine self-administration alters accumbal microRNA profiles in the mouse brain. Neural Regen Res 2018; 13:77-85. [PMID: 29451210 PMCID: PMC5840996 DOI: 10.4103/1673-5374.224374] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A significant amount of evidence indicates that microRNAs (miRNAs) play an important role in drug addiction. The nucleus accumbens (NAc) is a critical part of the brain's reward circuit and is involved in a variety of psychiatric disorders, including depression, anxiety, and drug addiction. However, few studies have examined the expression of miRNAs and their functional roles in the NAc under conditions of morphine addiction. In this study, mice were intravenously infused with morphine (0.01, 0.03, 0.3, 1 and 3 mg/kg/infusion) and showed inverted U-shaped response. After morphine self-administration, NAc was used to analyze the functional networks of altered miRNAs and their putative target mRNAs in the NAc following intravenous self-administration of morphine. We utilized several bioinformatics tools, including Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway mapping and CyTargetLinker. We found that 62 miRNAs were altered and exhibited differential expression patterns. The putative targets were related to diverse regulatory functions, such as neurogenesis, neurodegeneration, and synaptic plasticity, as well as the pharmacological effects of morphine (receptor internalization/endocytosis). The present findings provide novel insights into the regulatory mechanisms of accumbal molecules under conditions of morphine addiction and identify several novel biomarkers associated with morphine addiction.
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Affiliation(s)
- Juhwan Kim
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju; Center for Neuroscience, Korea Institute of Science and Technology (KIST), Seoul, South Korea
| | - Heh-In Im
- Center for Neuroscience, Korea Institute of Science and Technology (KIST); Convergence Research Center for Diagnosis, Treatment and Care System of Dementia; Division of Biomedical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, South Korea
| | - Changjong Moon
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju, South Korea
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22
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Liu Y, Ni Y, Zhang W, Sun YE, Ma Z, Gu X. N-acetyl-cysteine attenuates remifentanil-induced postoperative hyperalgesia via inhibiting matrix metalloproteinase-9 in dorsal root ganglia. Oncotarget 2017; 8:16988-17001. [PMID: 28199982 PMCID: PMC5370016 DOI: 10.18632/oncotarget.15217] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 01/27/2017] [Indexed: 11/25/2022] Open
Abstract
Treatment of remifentanil-induced postoperative hyperalgesia (RIH) remains a clinical challenge because the mechanisms are not fully understood. Matrix metalloproteinase-9 (MMP-9) is a key component in neuroinflammation because of its facilitation of pro-inflammatory cytokine maturation. Therefore, inhibition of MMP-9 may represent a novel therapeutic approach to the treatment of RIH. Sprague-Dawley rats were randomly divided into three groups: Control, Incision and Remifentanil. A right plantar surgical incision was performed in Group Incision, and intraoperative remifentanil (0.04 mg/kg, 0.4 ml) was infused subcutaneously for 30 min in Group Remifentanil. The results indicated that intraoperative remifentanil induced an up-regulation and activation of MMP-9 in DRGs but not spinal cords. MMP-9 was expressed primarily in DRG neurons co-expressing mu opioid receptors (MOR), and elicited interleukin-1β (IL-1β) cleavage in DRG neurons and satellite glial cells (SGCs). Intraperitoneal injection of N-acetyl-cysteine (NAC), a broadly used safe drug, significantly attenuated RIH via suppressing the activation of MMP-9 in DRGs. NAC inhibited the cleavage of IL-1β in DRGs, which is a critical substrate of MMP-9, and markedly suppressed glial activation and neuron excitability in spinal dorsal horn induced by remifentanil. These results demonstrated that NAC can effectively alleviate RIH via powerfully inhibiting MMP-9 activation in DRGs.
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Affiliation(s)
- Yue Liu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Yuan Ni
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Wei Zhang
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Yu-E Sun
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Zhengliang Ma
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Xiaoping Gu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, Jiangsu Province, China
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Li Z, Yin P, Chen J, Jin S, Liu J, Luo F. CaMKIIα may modulate fentanyl-induced hyperalgesia via a CeLC-PAG-RVM-spinal cord descending facilitative pain pathway in rats. PLoS One 2017; 12:e0177412. [PMID: 28489932 PMCID: PMC5425219 DOI: 10.1371/journal.pone.0177412] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 04/26/2017] [Indexed: 11/30/2022] Open
Abstract
Each of the lateral capsular division of central nucleus of amygdala(CeLC), periaqueductal gray (PAG), rostral ventromedial medulla(RVM) and spinal cord has been proved to contribute to the development of opioid-induced hyperalgesia(OIH). Especially, Ca2+/calmodulin-dependent protein kinase IIα (CaMKIIα) in CeLC and spinal cord seems to play a key role in OIH modulation. However, the pain pathway through which CaMKIIα modulates OIH is not clear. The pathway from CeLC to spinal cord for this modulation was explored in the present study. Mechanical and thermal hyperalgesia were tested by von Frey test or Hargreaves test, respectively. CaMKIIα activity (phospho-CaMKIIα, p-CaMKIIα) was evaluated by western blot analysis. CaMKIIα antagonist (KN93) was micro-infused into CeLC, spinal cord or PAG, respectively, to evaluate its effect on behavioral hyperalgesia and p-CaMKIIα expression in CeLC, PAG, RVM and spinal cord. Then the underlying synaptic mechanism was explored by recording miniature excitatory postsynaptic currents (mEPSCs) on PAG slices using whole-cell voltage-clamp methods. Results showed that inhibition of CeLC, PAG or spinal CaMKIIα activity respectively by KN93, reversed both mechanical and thermal hyperalgesia. Microinjection of KN93 into CeLC decreased p-CaMKIIα expression in CeLC, PAG, RVM and spinal cord; while intrathecal KN93 can only block spinal but not CeLC CaMKIIα activity. KN93 injected into PAG just decreased p-CaMKIIα expression in PAG, RVM and spinal cord, but not in the CeLC. Similarly, whole-cell voltage-clamp recording found the frequency and amplitude of mEPSCs in PAG cells were decreased by KN93 added in PAG slice or micro-infused into CeLC in vivo. These results together with previous findings suggest that CaMKIIα may modulate OIH via a CeLC-PAG-RVM-spinal cord descending facilitative pain pathway.
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Affiliation(s)
- Zhen Li
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pingping Yin
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Chen
- The Laboratory of Membrane Ion Channels and Medicine, Key Laboratory of Cognitive Science, State Ethnic Affairs Commission, College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, China
| | - Shenglan Jin
- Department of Anesthesiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jieqiong Liu
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fang Luo
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Voulalas PJ, Ji Y, Jiang L, Asgar J, Ro JY, Masri R. Loss of dopamine D1 receptors and diminished D1/5 receptor-mediated ERK phosphorylation in the periaqueductal gray after spinal cord lesion. Neuroscience 2016; 343:94-105. [PMID: 27932310 DOI: 10.1016/j.neuroscience.2016.11.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 11/18/2016] [Accepted: 11/25/2016] [Indexed: 12/20/2022]
Abstract
Neuropathic pain resulting from spinal cord injury is often accompanied by maladaptive plasticity of the central nervous system, including the opioid receptor-rich periaqueductal gray (PAG). Evidence suggests that sensory signaling via the PAG is robustly modulated by dopamine D1- and D2-like receptors, but the effect of damage to the spinal cord on D1 and D2 receptor protein expression and function in the PAG has not been examined. Here we show that 21days after a T10 or C6 spinothalamic tract lesion, both mice and rats display a remarkable decline in the expression of D1 receptors in the PAG, revealed by western blot analysis. These changes were associated with a significant reduction in hindpaw withdrawal thresholds in lesioned animals compared to sham-operated controls. We investigated the consequences of diminished D1 receptor levels by quantifying D1-like receptor-mediated phosphorylation of ERK1,2 and CREB, events that have been observed in numerous brain structures. In naïve animals, western blot analysis revealed that ERK1,2, but not CREB phosphorylation was significantly increased in the PAG by the D1-like agonist SKF 81297. Using immunohistochemistry, we found that SKF 81297 increased ERK1,2 phosphorylation in the PAG of sham animals. However, in lesioned animals, basal pERK1,2 levels were elevated and did not significantly increase after exposure to SKF 81297. Our findings provide support for the hypothesis that molecular adaptations resulting in a decrease in D1 receptor expression and signaling in the PAG are a consequence of SCL.
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Affiliation(s)
- Pamela J Voulalas
- University of Maryland School of Dentistry, Department of Endodontics, Periodontics & Prosthodontics, 650 W. Baltimore Street, Baltimore, MD 21201, USA
| | - Yadong Ji
- University of Maryland School of Dentistry, Department of Endodontics, Periodontics & Prosthodontics, 650 W. Baltimore Street, Baltimore, MD 21201, USA
| | - Li Jiang
- University of Maryland School of Medicine, Department of Diagnostic Radiology, Baltimore, MD 21201, USA
| | - Jamila Asgar
- University of Maryland School of Dentistry, Department of Neural and Pain Sciences, 650 W. Baltimore Street, Baltimore, MD 21201, USA
| | - Jin Y Ro
- University of Maryland School of Dentistry, Department of Neural and Pain Sciences, Baltimore, MD 21201, USA; Kyung Hee University, School of Dentistry, Department of Oral Medicine, Seoul, Republic of Korea
| | - Radi Masri
- University of Maryland School of Dentistry, Department of Endodontics, Periodontics & Prosthodontics, 650 W. Baltimore Street, Baltimore, MD 21201, USA; University of Maryland School of Medicine, Department of Anatomy and Neurobiology, 650 W. Baltimore Street, Baltimore, MD 21201, USA.
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25
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Activation of the Extracellular Signal-Regulated Kinase in the Amygdale Modulates Fentanyl-Induced Hypersensitivity in Rats. THE JOURNAL OF PAIN 2016; 18:188-199. [PMID: 27838497 DOI: 10.1016/j.jpain.2016.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 10/08/2016] [Accepted: 10/24/2016] [Indexed: 11/23/2022]
Abstract
Opioid-induced hyperalgesia (OIH) is one of the major problems associated with use of opioids in perioperative and chronic pain management. The mechanism underlying this paradoxical phenomenon needs to be fully elucidated. Laterocapsular division of the central nucleus of amygdale (CeLC) has emerged as an important brain center for pain modulation, so we hypothesize that the activation of extracellular signal-regulated kinase (ERK) in CeLC may modulate OIH through strengthening synaptic transmission between neurons in the CeLC. Phospho-ERK in CeLC was first found to be increased significantly in OIH rats induced by repeated subcutaneous injection of fentanyl. Blockade of this fentanyl-induced ERK activation by microinjection of U0126, an ERK inhibitor, into the CeLC reversed the behavioral hypersensitivity in a dose-dependent manner. In vitro whole-cell recordings evaluating the change in synaptic transmission found that the frequency as well as amplitude of miniature excitatory postsynaptic currents recorded on CeLC neurons from OIH rats were fundamentally increased and were completely reversed by acutely applied U0126 (10 μM in the recording well). In vivo microinjection of U0126 into the CeLC reversed the spinal long-term potentiation in OIH rats. These results showed that fentanyl-induced hypersensitivity may occur partly through the mechanism of ERK activation and followed by the strengthening of synaptic transmission in CeLC neurons. PERSPECTIVE This study provides evidence that ERK in the laterocapsular division of the CeLC is a key contributor to the development of fentanyl-induced hypersensitivity. Targeting the superspinal central CeLC can inhibit spinal long-term potentiation and alleviate behavioral hyperreflexia induced by fentanyl.
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Rosas M, Porru S, Fenu S, Ruiu S, Peana AT, Papale A, Brambilla R, Di Chiara G, Acquas E. Role of nucleus accumbens μ opioid receptors in the effects of morphine on ERK1/2 phosphorylation. Psychopharmacology (Berl) 2016; 233:2943-54. [PMID: 27245230 DOI: 10.1007/s00213-016-4340-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 05/20/2016] [Indexed: 10/21/2022]
Abstract
RATIONALE Despite the critical role attributed to phosphorylated extracellular signal regulated kinase (pERK1/2) in the nucleus accumbens (Acb) in the actions of addictive drugs, the effects of morphine on ERK1/2 phosphorylation in this area are still controversial. OBJECTIVES In order to investigate further this issue, we studied (1) the ability of morphine to affect ERK1/2 phosphorylation in the shell (AcbSh) and core (AcbC) of Sprague-Dawley and Wistar rats and of CD-1 and C57BL/6J mice and (2) the role of dopamine D1 and μ-opioid receptors in Sprague-Dawley rats and CD-1 mice. METHODS The pERK1/2 expression was assessed by immunohistochemistry. RESULTS In rats, morphine decreased AcbSh and AcbC pERK1/2 expression, whereas in mice, increased it preferentially in the AcbSh compared with the AcbC. Systemic SCH 39166 decreased pERK1/2 expression on its own in the AcbSh and AcbC of Sprague-Dawley rats and CD-1 mice; furthermore, in rats, SCH 39166 disclosed the ability of morphine to stimulate pERK1/2 expression. Systemic (rats and mice) and intra-Acb (rats) naltrexone prevented both decreases, in rats, and increases, in mice. CONCLUSIONS These findings confirm the differential effects of morphine in rats and mice Acb and that D1 receptors exert a facilitatory role on ERK1/2 phosphorylation; furthermore, they indicate that, in rats, removal of the D1-dependent pERK1/2 expression discloses the stimulatory influence of morphine on ERK1/2 phosphorylation and that the morphine's ability to decrease pERK1/2 expression is mediated by Acb μ-opioid receptors. Future experiments may disentangle the psychopharmacological significance of the effects of morphine on pERK1/2 in the Acb.
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Affiliation(s)
- Michela Rosas
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale, 72, I-09124, Cagliari, Italy
| | - Simona Porru
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale, 72, I-09124, Cagliari, Italy
| | - Sandro Fenu
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy.,Centre of Excellence on Neurobiology of Addiction, University of Cagliari, Cagliari, Italy
| | - Stefania Ruiu
- Institute of Translational Pharmacology, National Research Council, Pula, Cagliari, Italy
| | - Alessandra T Peana
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Alessandro Papale
- Neuroscience and Mental Health Research Institute (NMHRI), Neuroscience Division - School of Biosciences, Cardiff University, Cardiff, UK
| | - Riccardo Brambilla
- Neuroscience and Mental Health Research Institute (NMHRI), Neuroscience Division - School of Biosciences, Cardiff University, Cardiff, UK
| | - Gaetano Di Chiara
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy.,Centre of Excellence on Neurobiology of Addiction, University of Cagliari, Cagliari, Italy
| | - Elio Acquas
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale, 72, I-09124, Cagliari, Italy. .,Centre of Excellence on Neurobiology of Addiction, University of Cagliari, Cagliari, Italy.
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Roeckel LA, Le Coz GM, Gavériaux-Ruff C, Simonin F. Opioid-induced hyperalgesia: Cellular and molecular mechanisms. Neuroscience 2016; 338:160-182. [PMID: 27346146 DOI: 10.1016/j.neuroscience.2016.06.029] [Citation(s) in RCA: 261] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/10/2016] [Accepted: 06/16/2016] [Indexed: 12/18/2022]
Abstract
Opioids produce strong analgesia but their use is limited by a paradoxical hypersensitivity named opioid-induced hyperalgesia (OIH) that may be associated to analgesic tolerance. In the last decades, a significant number of preclinical studies have investigated the factors that modulate OIH development as well as the cellular and molecular mechanisms underlying OIH. Several factors have been shown to influence OIH including the genetic background and sex differences of experimental animals as well as the opioid regimen. Mu opioid receptor (MOR) variants and interactions of MOR with different proteins were shown important. Furthermore, at the cellular level, both neurons and glia play a major role in OIH development. Several neuronal processes contribute to OIH, like activation of neuroexcitatory mechanisms, long-term potentiation (LTP) and descending pain facilitation. Increased nociception is also mediated by neuroinflammation induced by the activation of microglia and astrocytes. Neurons and glial cells exert synergistic effects, which contribute to OIH. The molecular actors identified include the Toll-like receptor 4 and the anti-opioid systems as well as some other excitatory molecules, receptors, channels, chemokines, pro-inflammatory cytokines or lipids. This review summarizes the intracellular and intercellular pathways involved in OIH and highlights some mechanisms that may be challenged to limit OIH in the future.
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Affiliation(s)
- Laurie-Anne Roeckel
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Université de Strasbourg, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
| | - Glenn-Marie Le Coz
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France
| | - Claire Gavériaux-Ruff
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Université de Strasbourg, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France; Ecole Supérieure de Biotechnologie de Strasbourg, Université de Strasbourg, France
| | - Frédéric Simonin
- Biotechnologie et Signalisation Cellulaire, UMR 7242 CNRS, Université de Strasbourg, Illkirch, France.
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Abstract
This paper is the thirty-seventh consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2014 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (endogenous opioids and receptors), and the roles of these opioid peptides and receptors in pain and analgesia (pain and analgesia); stress and social status (human studies); tolerance and dependence (opioid mediation of other analgesic responses); learning and memory (stress and social status); eating and drinking (stress-induced analgesia); alcohol and drugs of abuse (emotional responses in opioid-mediated behaviors); sexual activity and hormones, pregnancy, development and endocrinology (opioid involvement in stress response regulation); mental illness and mood (tolerance and dependence); seizures and neurologic disorders (learning and memory); electrical-related activity and neurophysiology (opiates and conditioned place preferences (CPP)); general activity and locomotion (eating and drinking); gastrointestinal, renal and hepatic functions (alcohol and drugs of abuse); cardiovascular responses (opiates and ethanol); respiration and thermoregulation (opiates and THC); and immunological responses (opiates and stimulants). This paper is the thirty-seventh consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2014 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (endogenous opioids and receptors), and the roles of these opioid peptides and receptors in pain and analgesia (pain and analgesia); stress and social status (human studies); tolerance and dependence (opioid mediation of other analgesic responses); learning and memory (stress and social status); eating and drinking (stress-induced analgesia); alcohol and drugs of abuse (emotional responses in opioid-mediated behaviors); sexual activity and hormones, pregnancy, development and endocrinology (opioid involvement in stress response regulation); mental illness and mood (tolerance and dependence); seizures and neurologic disorders (learning and memory); electrical-related activity and neurophysiology (opiates and conditioned place preferences (CPP)); general activity and locomotion (eating and drinking); gastrointestinal, renal and hepatic functions (alcohol and drugs of abuse); cardiovascular responses (opiates and ethanol); respiration and thermoregulation (opiates and THC); and immunological responses (opiates and stimulants).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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Sanna MD, Mello T, Ghelardini C, Galeotti N. Inhibition of spinal ERK1/2–c-JUN signaling pathway counteracts the development of low doses morphine-induced hyperalgesia. Eur J Pharmacol 2015; 764:271-277. [DOI: 10.1016/j.ejphar.2015.07.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 07/06/2015] [Accepted: 07/08/2015] [Indexed: 01/18/2023]
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30
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Activation of JNK pathway in spinal astrocytes contributes to acute ultra–low-dose morphine thermal hyperalgesia. Pain 2015; 156:1265-1275. [DOI: 10.1097/j.pain.0000000000000164] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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