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Maximiano TKE, Carneiro JA, Fattori V, Verri WA. TRPV1: Receptor structure, activation, modulation and role in neuro-immune interactions and pain. Cell Calcium 2024; 119:102870. [PMID: 38531262 DOI: 10.1016/j.ceca.2024.102870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 03/06/2024] [Accepted: 03/06/2024] [Indexed: 03/28/2024]
Abstract
In the 1990s, the identification of a non-selective ion channel, especially responsive to capsaicin, revolutionized the studies of somatosensation and pain that were to follow. The TRPV1 channel is expressed mainly in neuronal cells, more specifically, in sensory neurons responsible for the perception of noxious stimuli. However, its presence has also been detected in other non-neuronal cells, such as immune cells, β- pancreatic cells, muscle cells and adipocytes. Activation of the channel occurs in response to a wide range of stimuli, such as noxious heat, low pH, gasses, toxins, endocannabinoids, lipid-derived endovanilloid, and chemical agents, such as capsaicin and resiniferatoxin. This activation results in an influx of cations through the channel pore, especially calcium. Intracellular calcium triggers different responses in sensory neurons. Dephosphorylation of the TRPV1 channel leads to its desensitization, which disrupts its function, while its phosphorylation increases the channel's sensitization and contributes to the channel's rehabilitation after desensitization. Kinases, phosphoinositides, and calmodulin are the main signaling pathways responsible for the channel's regulation. Thus, in this review we provide an overview of TRPV1 discovery, its tissue expression as well as on the mechanisms by which TRPV1 activation (directly or indirectly) induces pain in different disease models.
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Affiliation(s)
- Thaila Kawane Euflazio Maximiano
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Center of Biological Sciences, Londrina State University, Londrina, Paraná, Brazil
| | - Jessica Aparecida Carneiro
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Center of Biological Sciences, Londrina State University, Londrina, Paraná, Brazil
| | - Victor Fattori
- Vascular Biology Program, Department of Surgery, Boston Children's Hospital-Harvard Medical School, Karp Research Building, 300 Longwood Ave, 02115, Boston, Massachusetts, United States.
| | - Waldiceu A Verri
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Center of Biological Sciences, Londrina State University, Londrina, Paraná, Brazil.
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2
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Mussetto V, Moen A, Trofimova L, Sandkühler J, Hogri R. Differential activation of spinal and parabrachial glial cells in a neuropathic pain model. Front Cell Neurosci 2023; 17:1163171. [PMID: 37082205 PMCID: PMC10110840 DOI: 10.3389/fncel.2023.1163171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 03/17/2023] [Indexed: 04/22/2023] Open
Abstract
The clinical burden faced by chronic pain patients is compounded by affective comorbidities, such as depression and anxiety disorders. Emerging evidence suggests that reactive glial cells in the spinal cord dorsal horn play a key role in the chronification of pain, while supraspinal glia are important for psychological aspects of chronic pain. The lateral parabrachial nucleus (LPBN) in the brainstem is a key node in the ascending pain system, and is crucial for the emotional dimension of pain. Yet, whether astrocytes and microglia in the LPBN are activated during chronic pain is unknown. Here, we evaluated the occurrence of glial activation in the LPBN of male Sprague-Dawley rats 1, 4, and 7 weeks after inducing a chronic constriction injury (CCI) of the sciatic nerve, a prevalent neuropathic pain model. CCI animals developed mechanical and thermal hypersensitivity that persisted for at least 4 weeks, and was mostly reversed after 7 weeks. Using immunohistochemical staining and confocal imaging, we found that CCI caused a strong increase in the expression of the astrocytic marker GFAP and the microglial marker Iba1 in the ipsilateral spinal dorsal horn, with peak expression observed 1 week post-injury. Moreover, morphology analysis revealed changes in microglial phenotype, indicative of microglia activation. In contrast, CCI did not induce any detectable changes in either astrocytes or microglia in the LPBN, at any time point. Thus, our results indicate that while neuropathic pain induces a robust glial reaction in the spinal dorsal horn, it fails to activate glial cells in the LPBN.
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Affiliation(s)
| | | | | | | | - Roni Hogri
- Department of Neurophysiology, Center for Brain Research, Medical University of Vienna, Vienna, Austria
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3
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Karvat J, Andrade TES, Kraus SI, Beppler LM, de Jesus GDSC, Ferreira JB, da Silva MD. Drug repositioning: diacerein as a new therapeutic approach in a mice model of sciatic nerve injury. Pharmacol Rep 2023; 75:358-375. [PMID: 36809646 DOI: 10.1007/s43440-023-00461-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/23/2023]
Abstract
BACKGROUND Peripheral nerve injuries negatively impact the quality of life of patients, with no effective treatment available that accelerates sensorimotor recovery and promotes functional improvement and pain relief. The aim of this study was to evaluate the effects of diacerein (DIA) in an experimental mice model of sciatic nerve crush. METHOD In this study, male Swiss mice were used, randomly separated into six groups as follows: FO (false-operated + vehicle); FO + DIA (false-operated + diacerein 30 mg/kg); SNI (sciatic nerve injury + vehicle); SNI + DIA in doses of 3, 10 and 30 mg/kg (sciatic nerve injury + treatment with diacerein in doses of 3-30 mg/kg). DIA or vehicle was administered 24 h after the surgical procedure, intragastrically, twice a day. The lesion of the right sciatic nerve was generated by crush. RESULTS We found that the treatment of animals with DIA accelerated sensorimotor recovery of the animal. In addition, animals in the sciatic nerve injury + vehicle (SNI) group showed hopelessness, anhedonia, and lack of well-being, which were significantly inhibited by DIA treatment. The SNI group showed a reduction in the diameters of nerve fibers, axons, and myelin sheaths, while DIA treatment recovered all these parameters. In addition, the treatment of animals with DIA prevented an increase the levels of interleukin (IL)-1β and a reduction in the levels of the brain-derived growth factor (BDNF). CONCLUSIONS Treatment with DIA reduces hypersensitivity and depression like behaviors in animals. Furthermore, DIA promotes functional recovery and regulates IL-1β and BDNF concentrations.
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Affiliation(s)
- Jhenifer Karvat
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil.,Program of Post-Graduation in Neuroscience, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Tassiane Emanuelle Servare Andrade
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil.,Program of Post-Graduation in Neuroscience, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Scheila Iria Kraus
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil.,Program of Post-Graduation in Neuroscience, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Larissa May Beppler
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Gustavo Dos Santos Catarina de Jesus
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Jeane Bachi Ferreira
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Morgana Duarte da Silva
- Laboratory of Neurobiology of Pain and Inflammation (LANDI), Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil. .,Program of Post-Graduation in Neuroscience, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil.
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4
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Liu XG. Normalization of Neuroinflammation: A New Strategy for Treatment of Persistent Pain and Memory/Emotional Deficits in Chronic Pain. J Inflamm Res 2022; 15:5201-5233. [PMID: 36110505 PMCID: PMC9469940 DOI: 10.2147/jir.s379093] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/18/2022] [Indexed: 12/12/2022] Open
Abstract
Chronic pain, which affects around 1/3 of the world population and is often comorbid with memory deficit and mood depression, is a leading source of suffering and disability. Studies in past decades have shown that hyperexcitability of primary sensory neurons resulting from abnormal expression of ion channels and central sensitization mediated pathological synaptic plasticity, such as long-term potentiation in spinal dorsal horn, underlie the persistent pain. The memory/emotional deficits are associated with impaired synaptic connectivity in hippocampus. Dysregulation of numerous endogenous proteins including receptors and intracellular signaling molecules is involved in the pathological processes. However, increasing knowledge contributes little to clinical treatment. Emerging evidence has demonstrated that the neuroinflammation, characterized by overproduction of pro-inflammatory cytokines and glial activation, is reliably detected in humans and animals with chronic pain, and is sufficient to induce persistent pain and memory/emotional deficits. The abnormal expression of ion channels and pathological synaptic plasticity in spinal dorsal horn and in hippocampus are resulting from neuroinflammation. The neuroinflammation is initiated and maintained by the interactions of circulating monocytes, glial cells and neurons. Obviously, unlike infectious diseases and cancer, which are caused by pathogens or malignant cells, chronic pain is resulting from alterations of cells and molecules which have numerous physiological functions. Therefore, normalization (counterbalance) but not simple inhibition of the neuroinflammation is the right strategy for treating neuronal disorders. Currently, no such agent is available in clinic. While experimental studies have demonstrated that intracellular Mg2+ deficiency is a common feature of chronic pain in animal models and supplement Mg2+ are capable of normalizing the neuroinflammation, activation of upregulated proteins that promote recovery, such as translocator protein (18k Da) or liver X receptors, has a similar effect. In this article, relevant experimental and clinical evidence is reviewed and discussed.
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Affiliation(s)
- Xian-Guo Liu
- Pain Research Center and Department of Physiology, Zhongshan School of Medicine of Sun Yat-sen University, Guangzhou, People's Republic of China
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5
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Was H, Borkowska A, Bagues A, Tu L, Liu JYH, Lu Z, Rudd JA, Nurgali K, Abalo R. Mechanisms of Chemotherapy-Induced Neurotoxicity. Front Pharmacol 2022; 13:750507. [PMID: 35418856 PMCID: PMC8996259 DOI: 10.3389/fphar.2022.750507] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 03/02/2022] [Indexed: 12/15/2022] Open
Abstract
Since the first clinical trials conducted after World War II, chemotherapeutic drugs have been extensively used in the clinic as the main cancer treatment either alone or as an adjuvant therapy before and after surgery. Although the use of chemotherapeutic drugs improved the survival of cancer patients, these drugs are notorious for causing many severe side effects that significantly reduce the efficacy of anti-cancer treatment and patients’ quality of life. Many widely used chemotherapy drugs including platinum-based agents, taxanes, vinca alkaloids, proteasome inhibitors, and thalidomide analogs may cause direct and indirect neurotoxicity. In this review we discuss the main effects of chemotherapy on the peripheral and central nervous systems, including neuropathic pain, chemobrain, enteric neuropathy, as well as nausea and emesis. Understanding mechanisms involved in chemotherapy-induced neurotoxicity is crucial for the development of drugs that can protect the nervous system, reduce symptoms experienced by millions of patients, and improve the outcome of the treatment and patients’ quality of life.
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Affiliation(s)
- Halina Was
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine, Warsaw, Poland
| | - Agata Borkowska
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Ana Bagues
- Área de Farmacología y Nutrición, Departamento de Ciencias Básicas de la Salud, Universidad Rey Juan Carlos (URJC), Alcorcón, Spain.,High Performance Research Group in Experimental Pharmacology (PHARMAKOM-URJC), URJC, Alcorcón, Spain.,Unidad Asociada I+D+i del Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Longlong Tu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Julia Y H Liu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Zengbing Lu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - John A Rudd
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.,The Laboratory Animal Services Centre, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia.,Department of Medicine Western Health, University of Melbourne, Melbourne, VIC, Australia.,Regenerative Medicine and Stem Cells Program, Australian Institute for Musculoskeletal Science (AIMSS), Melbourne, VIC, Australia
| | - Raquel Abalo
- Área de Farmacología y Nutrición, Departamento de Ciencias Básicas de la Salud, Universidad Rey Juan Carlos (URJC), Alcorcón, Spain.,Unidad Asociada I+D+i del Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain.,High Performance Research Group in Physiopathology and Pharmacology of the Digestive System (NeuGut-URJC), URJC, Alcorcón, Spain.,Grupo de Trabajo de Ciencias Básicas en Dolor y Analgesia de la Sociedad Española del Dolor, Madrid, Spain
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6
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Phelps CE, Lumb BM, Donaldson LF, Robinson ES. The partial saphenous nerve injury model of pain impairs reward-related learning but not reward sensitivity or motivation. Pain 2021; 162:956-966. [PMID: 33591111 DOI: 10.1097/j.pain.0000000000002177] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/15/2020] [Indexed: 11/25/2022]
Abstract
ABSTRACT Chronic pain is highly comorbid with affective disorders, including major depressive disorder. A core feature of major depressive disorder is a loss of interest in previously rewarding activities. Major depressive disorder is also associated with negative affective biases where cognitive processes are modulated by the affective state. Previous work from our laboratory has shown that reward-related learning and memory is impaired in rodent models of depression generated through a variety of different manipulations. This study investigated different aspects of reward-related behaviour in a rodent model of chronic pain, the partial saphenous nerve injury (PSNI). Using our reward-learning assay, an impairment in reward learning was observed with no difference in sucrose preference, consistent with a lack of effect on reward sensitivity and similar to the effects seen in depression models. In a successive negative contrast task, chronic pain was not associated with changes in motivation for reward either under normal conditions or when reward was devalued although both sham and PSNI groups exhibited the expected negative contrast effect. In the affective bias test, PSNI rats developed a positive affective bias when treated with gabapentin, an effect not seen in the controls suggesting an association with the antinociceptive effects of the drug inducing a relatively more positive affective state. Together, these data suggest that there are changes in reward-related cognition in this chronic pain model consistent with previous findings in rodent models of depression. The effects seen with gabapentin suggest that pain-associated negative affective state may be remediated by this atypical analgesic.
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Affiliation(s)
- Caroline E Phelps
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, United Kingdom
- Department of Pharmacology, Arizona Health Sciences Center, University of Arizona, Tucson, AZ, United States
| | - Bridget M Lumb
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, United Kingdom
| | - Lucy F Donaldson
- School of Life Sciences and Arthritis Research UK Pain Centre, University of Nottingham, Nottingham, United Kingdom
| | - Emma S Robinson
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, United Kingdom
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7
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Chronic pain impact on rodents’ behavioral repertoire. Neurosci Biobehav Rev 2020; 119:101-127. [DOI: 10.1016/j.neubiorev.2020.09.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 07/14/2020] [Accepted: 09/21/2020] [Indexed: 12/20/2022]
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8
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Bioinformatic Analysis of Neuroimmune Mechanism of Neuropathic Pain. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4516349. [PMID: 32908889 PMCID: PMC7475749 DOI: 10.1155/2020/4516349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 12/21/2022]
Abstract
Background Neuropathic pain (NP) is a devastating complication following nerve injury, and it can be alleviated by regulating neuroimmune direction. We aimed to explore the neuroimmune mechanism and identify some new diagnostic or therapeutic targets for NP treatment via bioinformatic analysis. Methods The microarray GSE18803 was downloaded and analyzed using R. The Venn diagram was drawn to find neuroimmune-related differentially expressed genes (DEGs) in neuropathic pain. Gene Ontology (GO), pathway enrichment, and protein-protein interaction (PPI) network were used to analyze DEGs, respectively. Besides, the identified hub genes were submitted to the DGIdb database to find relevant therapeutic drugs. Results A total of 91 neuroimmune-related DEGs were identified. The results of GO and pathway enrichment analyses were closely related to immune and inflammatory responses. PPI analysis showed two important modules and 8 hub genes: PTPRC, CD68, CTSS, RAC2, LAPTM5, FCGR3A, CD53, and HCK. The drug-hub gene interaction network was constructed by Cytoscape, and it included 24 candidate drugs and 3 hub genes. Conclusion The present study helps us better understand the neuroimmune mechanism of neuropathic pain and provides some novel insights on NP treatment, such as modulation of microglia polarization and targeting bone resorption. Besides, CD68, CTSS, LAPTM5, FCGR3A, and CD53 may be used as early diagnostic biomarkers and the gene HCK can be a therapeutic target.
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da Silva MD, Guginski G, Sato KL, Sanada LS, Sluka KA, Santos AR. Persistent pain induces mood problems and memory loss by the involvement of cytokines, growth factors, and supraspinal glial cells. Brain Behav Immun Health 2020; 7:100118. [PMID: 34589875 PMCID: PMC8474185 DOI: 10.1016/j.bbih.2020.100118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 12/27/2022] Open
Abstract
Lesions of peripheral nerves lead to pain, hyperalgesia, and psychological comorbidities. However, the relationship between mood disorders and neuropathic pain is unclear, as well as the underlying mechanisms related to these disorders. Therefore, we investigated if nerve injury induces depression, anxiety, and cognitive impairment and if there were changes in cytokines, growth factors, and glial cell activation in cortical sites involved in processing pain and mood in animals with nerve injury. Nerve injury was induced by partial sciatic nerve ligation (PSNL) in male Swiss mice and compared to sham-operated animals. Nociceptive behavioral tests to mechanical and thermal (heat and cold) stimuli confirmed the development of hyperalgesia. We further examined mood disorders and memory behaviors. We show nerve injury induces a decrease in mechanical withdrawal thresholds and thermal latency to heat and cold. We also show that nerve injury causes depressive-like and anxiety-like behaviors as well as impairment in short-term memory in mice. There were increases in proinflammatory cytokines as well as Brain-Derived Neurotrophic Factor (BDNF) in the injured nerve. In the spinal cord, there were increases in both pro and anti-inflammatory cytokines, as well as of BDNF and Nerve Growth Factor (NGF). Further, in our data was a decrease in the density of microglia and astrocytes in the hippocampus and increased microglial density in the prefrontal cortex, areas associated with neuropathic pain conditions.
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Affiliation(s)
- Morgana D. da Silva
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center for Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
- Program of Pos-graduation in Neuroscience, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Giselle Guginski
- Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Karina L. Sato
- Department of Physical Therapy and Rehabilitation Science, Pain Research Program, University of Iowa, #1-252 MEB, Iowa City, IA, 52241, USA
| | - Luciana Sayuri Sanada
- Department of Physical Therapy and Rehabilitation Science, Pain Research Program, University of Iowa, #1-252 MEB, Iowa City, IA, 52241, USA
| | - Kathleen A. Sluka
- Department of Physical Therapy and Rehabilitation Science, Pain Research Program, University of Iowa, #1-252 MEB, Iowa City, IA, 52241, USA
| | - Adair R.S. Santos
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center for Biological Sciences, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
- Program of Pos-graduation in Neuroscience, Federal University of Santa Catarina, University Campus, Trindade, Florianópolis, SC, 88040-900, Brazil
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10
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Yamada EF, Olin LC, Pontel CL, da Rosa HS, Folmer V, da Silva MD. Sida tuberculata reduces oxidative stress and pain caused by the knee osteoarthritis. JOURNAL OF ETHNOPHARMACOLOGY 2020; 248:112277. [PMID: 31606533 DOI: 10.1016/j.jep.2019.112277] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/13/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Knee osteoarthritis (OA) cause pain and edema, as well as unbalance between the production of reactive oxygen species and antioxidant activity. These problems interfere with the articular function, leading to a significant loss of life quality. Sida tuberculata R.E.Fr. is an herbaceous plant belonging to the Malvaceae family found in southern Brazil. This plant has traditionally been consumed as an aqueous extract and popularly used in the treatment of many diseases, with antioxidant and antimicrobial activity, reducing pain and inflammation. AIM OF THE STUDY To verify the effects of S. tuberculata extract obtained from leaves on oxidative, toxic and nociceptive parameters induced by knee OA in rats. MATERIALS AND METHODS Aqueous extracts of S. tuberculata were evaluated under phytochemical analyses. Knee Osteoarthritis was induced in rats with monosodium iodoacetate (1.5 mg/50 μl) and treated with S. tuberculata extract. The animals were treated orally with 3 doses of S. tuberculata extract (STE): 1.5, 5 and 15 mg/ml, for 14 days. For biochemical analyses, the following tests were performed: lipid peroxidation, carbonylated protein content, superoxide dismutase activity, non-protein thiol levels and myeloperoxidase activity. For the evaluation of pain and edema we verify mechanical and thermal hyperalgesia, spontaneous pain observation and measurement of knee edema with a caliper. For histological evaluations, the animal knee joints were removed. For toxicity evaluation, the levels of aspartate aminotransferase, alanine aminotransferase and urea, as well as the relative weight of the organs were analyzed. RESULTS The S. tuberculata phytochemical analyses showed the majority peak corresponding to 20-hydroxyecdysone (20HE). The plant extract decreased damages related to oxidative stress in the blood serum (lipid peroxidation and carbonyl content) Overall, the STE 5 mg Group presented the greater statistical significance, in the blood serum samples, in relation to the other groups, being the most relevant result. The S. tuberculata groups presented pain decrease, lower neutrophil activity in the knee, and increased blood serum activity. The animals of S. tuberculata groups showed a decrease in mechanical hyperalgesia. The animals treated also presented lower scores for spontaneous pain. It was observed that the dose of 5 mg presented, once again, more expressive results, since the animals of this group had a higher frequency (greater number of days) with significant decrease of pain. In the histological analysis, in the STE 5 mg group, the articular cartilage lesions were observed at an intermediate point between the damage found in the MIA and Diclofenac groups. Besides that, the STE did not show significant changes in oxidative stress damage in liver and kidney samples. Blood serum samples did not indicate significant differences in liver and renal function. As well as, there were no differences in mean relative body weights in relation to control groups (Salina and MIA). CONCLUSION S. tuberculata reduced the damage due to oxidative stress and pain caused by knee osteoarthritis in rats. In addition, the extract presented no toxicity. Our results suggest that S. tuberculata seems to have a therapeutic potential in the osteoarthritis treatment.
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Affiliation(s)
| | | | | | | | - Vanderlei Folmer
- Universidade Federal do Pampa (Unipampa), Uruguaiana, RS, Brazil
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11
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Xu H, Dang SJ, Cui YY, Wu ZY, Zhang JF, Mei XP, Feng YP, Li YQ. Systemic Injection of Thalidomide Prevent and Attenuate Neuropathic Pain and Alleviate Neuroinflammatory Response in the Spinal Dorsal Horn. J Pain Res 2019; 12:3221-3230. [PMID: 31819606 PMCID: PMC6896366 DOI: 10.2147/jpr.s213112] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 11/07/2019] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Thalidomide (Tha) has been shown to exert immunomodulatory and anti-inflammatory properties. Whether Tha can alleviate spinal nerve ligation (SNL)-induced neuropathic pain (NP) is still unclear. This study aimed to investigate the therapeutic effect of Tha on the SNL-induced NP and further explore the potential analgesic mechanisms of Tha. METHODS The effects of Tha on SNL-induced mechanical allodynia were assessed by pain behavioral testing. The expressions of the astrocyte marker glial fibrillary acidic protein (GFAP) and the microglia marker Iba1 in the spinal dorsal horn were evaluated by immunofluorescence histochemistry. Protein expressions of the tumor necrosis factor alpha (TNF-α) in the spinal dorsal horn were tested by Western blot assay. Data were analyzed using one-way ANOVA or two-way ANOVA. RESULTS By the pretreatment with a single intraperitoneal injection, the PWMT in SNL+Tha group was significantly increased from day 1 to day 2 after SNL (P < 0.05 compared with SNL+Veh group). By the posttreatment with a single intraperitoneal injection, the PWMT in SNL+Tha group was also significantly increased from day 3 to day 4 after SNL (P < 0.05 compared with SNL+Veh group). By the posttreatment with multiple intraperitoneal injection, both the PWMT and the PWTL in SNL+Tha group were similarly significantly increased from day 3 to day 14 after SNL (P < 0.05 compared with SNL+Veh group). Furthermore, the GFAP and Iba1 expressions and TNF-α levels of the ipsilateral spinal dorsal horn in SNL+Tha group were significantly weaker from day 3 to day 14 after SNL than those in SNL+Veh group (P < 0.05). CONCLUSION Tha can significantly alleviate NP induced by SNL. The analgesic mechanism may be related to inhibition of astrocyte and microglia activation as well as down-regulation of TNF-α levels in the spinal dorsal horn.
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Affiliation(s)
- Hao Xu
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi’an, Shaan Xi, People’s Republic of China
- Institution of Basic Medical Science, Xi’an Medical University, Xi’an, Shaan Xi, People’s Republic of China
| | - Sha-Jie Dang
- Department of Anesthesiology, Shaanxi Provincial Cancer Hospital, Xi’an, Shaan Xi, People’s Republic of China
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, Shaan Xi, People’s Republic of China
| | - Yuan-Yuan Cui
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi’an, Shaan Xi, People’s Republic of China
| | - Zhen-Yu Wu
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi’an, Shaan Xi, People’s Republic of China
| | - Jun-Feng Zhang
- Institution of Basic Medical Science, Xi’an Medical University, Xi’an, Shaan Xi, People’s Republic of China
| | - Xiao-Peng Mei
- Department of Anesthesiology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaan Xi, People’s Republic of China
| | - Yu-Peng Feng
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi’an, Shaan Xi, People’s Republic of China
| | - Yun-Qing Li
- Department of Anatomy, Histology and Embryology, K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi’an, Shaan Xi, People’s Republic of China
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Involvement of the nitric oxide pathway in the anti-depressant-like effects of thalidomide in mice. Physiol Behav 2019; 208:112572. [PMID: 31175889 DOI: 10.1016/j.physbeh.2019.112572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 06/02/2019] [Accepted: 06/04/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Thalidomide is a sedative/hypnotic agent that is currently used to treat patients suffering from multiple myeloma, myelodysplastic syndromes and erythema nodosum leprosum. Although previous studies have demonstrated that thalidomide possesses anti-depressant-like properties, the exact mechanism that thalidomide exerts this effect is not understood. In this study, we used two mouse models of depression and investigated the possible role of nitric oxide (NO), NO synthase (NOS) and inducible NOS (iNOS) in the ant-depressant-like effects of thalidomide. METHODS Male mice were injected with different doses of thalidomide intraperitoneally. In order to assess the anti-depressant-like properties of thalidomide, the immobility time of mice was assessed in the forced swimming test (FST) and tail suspension test (TST). Locomotor activity was assessed using the open-field test. To assess the role of nitric oxide, N(G)-nitro-L-arginine methyl ester (L-NAME, non-specific NOS inhibitor), aminoguanidine (selective iNOS inhibitor) or L-arginine (NO precursor) were administered intraperitoneally along with specific doses of thalidomide. RESULTS Thalidomide (10 mg/kg) significantly reduced immobility time in FST and TST. Aminoguanidine (50 mg/kg) and L-NAME (10 mg/kg) significantly augmented the anti-immobility effects of thalidomide (5 mg/kg). L-arginine (750 mg/kg) significantly inhibited the anti-immobility effects of thalidomide (10 mg/kg). None of the treatment groups demonstrated alteration of locomotor activity. CONCLUSION Thalidomide exerts its anti-depressant-like effects through a mechanism dependent upon NO inhibition.
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Mechanisms of Chemotherapy-Induced Peripheral Neuropathy. Int J Mol Sci 2019; 20:ijms20061451. [PMID: 30909387 PMCID: PMC6471666 DOI: 10.3390/ijms20061451] [Citation(s) in RCA: 385] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/16/2019] [Accepted: 03/19/2019] [Indexed: 12/18/2022] Open
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is one of the most frequent side effects caused by antineoplastic agents, with a prevalence from 19% to over 85%. Clinically, CIPN is a mostly sensory neuropathy that may be accompanied by motor and autonomic changes of varying intensity and duration. Due to its high prevalence among cancer patients, CIPN constitutes a major problem for both cancer patients and survivors as well as for their health care providers, especially because, at the moment, there is no single effective method of preventing CIPN; moreover, the possibilities of treating this syndrome are very limited. There are six main substance groups that cause damage to peripheral sensory, motor and autonomic neurons, which result in the development of CIPN: platinum-based antineoplastic agents, vinca alkaloids, epothilones (ixabepilone), taxanes, proteasome inhibitors (bortezomib) and immunomodulatory drugs (thalidomide). Among them, the most neurotoxic are platinum-based agents, taxanes, ixabepilone and thalidomide; other less neurotoxic but also commonly used drugs are bortezomib and vinca alkaloids. This paper reviews the clinical picture of CIPN and the neurotoxicity mechanisms of the most common antineoplastic agents. A better understanding of the risk factors and underlying mechanisms of CIPN is needed to develop effective preventive and therapeutic strategies.
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Humo M, Lu H, Yalcin I. The molecular neurobiology of chronic pain-induced depression. Cell Tissue Res 2019; 377:21-43. [PMID: 30778732 DOI: 10.1007/s00441-019-03003-z] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/01/2019] [Indexed: 12/18/2022]
Abstract
The increasing number of individuals with comorbidities poses an urgent need to improve the management of patients with multiple co-existing diseases. Among these comorbidities, chronic pain and mood disorders, two long-lasting disabling conditions that significantly reduce the quality of life, could be cited first. The recent development of animal models accelerated the studies focusing on the underlying mechanisms of the chronic pain and depression/anxiety comorbidity. This review provides an overview of clinical and pre-clinical studies performed over the past two decades addressing the molecular aspects of the comorbid relationship of chronic pain and depression. We thus focused on the studies that investigated the molecular characteristics of the comorbid relationship between chronic pain and mood disorders, especially major depressive disorders, from the genetic and epigenetic point of view to key neuromodulators which have been shown to play an important role in this comorbidity.
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Affiliation(s)
- Muris Humo
- Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique et Université de Strasbourg, 67000, Strasbourg, France
| | - Han Lu
- Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique et Université de Strasbourg, 67000, Strasbourg, France.,Faculty of Biology and Bernstein Center Freiburg, University of Freiburg, D-79104, Freiburg, Germany
| | - Ipek Yalcin
- Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique et Université de Strasbourg, 67000, Strasbourg, France.
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Yamada EF, Salgueiro AF, Goulart ADS, Mendes VP, Anjos BL, Folmer V, da Silva MD. Evaluation of monosodium iodoacetate dosage to induce knee osteoarthritis: Relation with oxidative stress and pain. Int J Rheum Dis 2018; 22:399-410. [PMID: 30585422 DOI: 10.1111/1756-185x.13450] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/23/2018] [Accepted: 11/08/2018] [Indexed: 12/25/2022]
Abstract
AIM To determine the dose of monosodium iodoacetate (MIA) required to induce oxidative stress, as well as pain and edema; to confirm the induction of knee osteoarthritis (OA) symptoms in rats by the presence of reactive oxygen species (ROS) and reduction of antioxidant agents; and to verify the presence of histopathological injury in these affected joints. METHOD Biological markers of oxidative stress, pain, knee edema, and cartilage degeneration provided by different doses of MIA (0.5; 1.0 or 1.5 mg) in rat knee joints were analyzed. The animal evaluations were conducted during 15 days for mechanical and cold hypersensitivity, spontaneous pain and edema. After that, blood serum, intra-articular lavage and structures of knee, spinal cord and brainstem were collected for biochemical analysis; moreover, the knees were removed for histological evaluation. RESULTS This study demonstrates that the highest dose of MIA (1.5 mg) increased the oxidative stress markers and reduced the antioxidant reactions, both in the focus of the lesion and in distant sites. MIA also induced the inflammatory process, characterized by pain, edema, increase in neutrophil count and articular damage. CONCLUSION This model provides a basis for the exploration of underlying mechanisms in OA and the identification of mechanisms that may guide therapy and the discovery of OA signals and symptoms.
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Affiliation(s)
- Eloá Ferreira Yamada
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), Uruguaiana, Brazil
| | | | - Aline da Silva Goulart
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), Uruguaiana, Brazil
| | - Vanessa Pereira Mendes
- Veterinary Pathology Laboratory, Universidade Federal do Pampa (Unipampa), Uruguaiana, Brazil
| | - Bruno Leite Anjos
- Veterinary Pathology Laboratory, Universidade Federal do Pampa (Unipampa), Uruguaiana, Brazil
| | - Vanderlei Folmer
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), Uruguaiana, Brazil
| | - Morgana Duarte da Silva
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), Uruguaiana, Brazil
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Abstract
OBJECTIVE The aims of this study were to replicate previously published experiments and to modify the protocol to detect the effects of chronic antidepressant treatment in mice. METHODS Male Swiss mice (n=6-8/group) housed in reversed light/dark cycle were randomly assigned into receive vehicle (10% sucrose), sub-effective doses (1 and 3 mg/kg) or effective doses (10 and 30 mg/kg) of bupropion, desipramine, and fluoxetine and a candidate antidepressant, sodium butyrate (1-30 mg/kg) per gavage (p.o.) 1 h before the forced swim test (FST). Treatments continued daily for 7 and 14 days during retests 1 and 2, respectively. In an additional experiment, mice received fluoxetine (20 mg/kg) or vehicle (10% sucrose or 0.9% saline) p.o. or i.p. before the FST. Mice housed in reversed or standard light/dark cycles received fluoxetine (20 mg/kg) prior FST. Video recordings of behavioural testing were used for blind assessment of the outcomes. RESULTS According to the expected, doses of antidepressants considered sub-effective failed to affect the immobility time of mice in the FST. Surprisingly, acute and chronic treatment with the high doses of bupropion, desipramine, and fluoxetine or sodium butyrate also failed to reduce the immobility time of mice in the FST. Fluoxetine 20 mg/kg was also ineffective in the FST when injected i.p. or in mice housed in normal light/dark cycle. CONCLUSION Data suggest the lack of efficacy of orally administered bupropion, desipramine, fluoxetine in the FST in Swiss mice. High variability, due to high and low immobility mice, may explain the limited effects of the treatments.
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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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Anti-hypersensitivity effects of the phthalimide derivative N-(4methyl-phenyl)-4-methylphthalimide in different pain models in mice. Biomed Pharmacother 2017; 96:503-512. [PMID: 29032334 DOI: 10.1016/j.biopha.2017.10.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/26/2017] [Accepted: 10/09/2017] [Indexed: 01/20/2023] Open
Abstract
The treatment of chronic pain remains a challenge for clinicians worldwide, independent of its pathogenesis. It motivates several studies attempting to discover strategies to treat the disease. The in silico analysis using molecular docking approach demonstrated that the phthalimide N-(4methyl-phenyl)-4-methylphthalimide (MPMPH-1) presented high affinity to adenylyl-cyclase enzyme (AC). It also prominently reduced the mechanical hypersensitivity of mice challenged by Forskolin, an AC activator. This effect lasted for up to 48h after Forskolin injection, presenting activity longer than MDL-12330A (AC inhibitor). MPMPH-1 was also effective in reducing the hypersensitivity induced by IL-1β, bradykinin, prostaglandin E2 or epinephrine, chemical mediators that have, among others, AC as pivotal protein in their signalling cascade to induce mechanical-pain behaviour. The compound presented marked inhibition in inflammatory-pain models induced by carrageenan, lipopolysaccharide or complete Freund's adjuvant, including neutrophil migration inhibition. Furthermore, it also seems to act in both peripheral and pain central-control pathways, being also effective in reducing the persistent cancer-pain behaviour induced by melanoma cells in mice. MPMPH-1 could represent a promising pharmacological tool to treat acute and chronic painful diseases, with good bioavailability, local activity, and lack of locomotor-activity interference. Further studies are necessary to determine the exact mechanism of action but it seems to involve AC enzyme as possible target.
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Xie ZM, Wang XM, Xu N, Wang J, Pan W, Tang XH, Zhou ZQ, Hashimoto K, Yang JJ. Alterations in the inflammatory cytokines and brain-derived neurotrophic factor contribute to depression-like phenotype after spared nerve injury: improvement by ketamine. Sci Rep 2017; 7:3124. [PMID: 28600519 PMCID: PMC5466642 DOI: 10.1038/s41598-017-03590-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 05/02/2017] [Indexed: 12/17/2022] Open
Abstract
Although pain is frequently accompanied with depression, little is known about the risk factors contributing to individual differences to the comorbidity of pain and depression. In this study, we examined whether cytokines and brain-derived neurotrophic factor (BDNF) might contribute to the individual differences in the development of neuropathic pain-induced depression. Rats were randomly subjected to spared nerved ligation (SNI) or sham surgery. The SNI rats were divided into two groups by the data from depression-related behavioral tests. Rats with depression-like phenotype displayed higher levels of pro-inflammatory cytokines (e.g., interleukin (IL)-1β, IL-6) as well as imbalance of pro/anti-inflammatory cytokines compared with rats without depression-like phenotype and sham-operated rats. Levels of BDNF in the prefrontal cortex of rats with depression-like phenotype were lower than those of rats without depression-like phenotype and sham-operated rats. A single dose of ketamine ameliorated depression-like behaviors in the rats with depression-like phenotype. Interestingly, higher serum levels of IL-1β and IL-6 in the rat with depression-like phenotype were normalized after a single dose of ketamine. These findings suggest that alterations in the inflammatory cytokines and BDNF might contribute to neuropathic pain-induced depression, and that serum cytokines may be predictable biomarkers for ketamine’s antidepressant actions.
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Affiliation(s)
- Ze-Min Xie
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China.,Jiangsu Province Key Laboratory of Anesthesiology & Jiangsu Province Laboratory of Anesthetic and Analgesia Application Technology, Xuzhou Medicine University, Xuzhou, China
| | - Xing-Ming Wang
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China
| | - Ning Xu
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China.,Jiangsu Province Key Laboratory of Anesthesiology & Jiangsu Province Laboratory of Anesthetic and Analgesia Application Technology, Xuzhou Medicine University, Xuzhou, China
| | - Jing Wang
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China.,Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Wei Pan
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xiao-Hui Tang
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China.,Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Zhi-Qiang Zhou
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China.,Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Kenji Hashimoto
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan.
| | - Jian-Jun Yang
- Department of Anesthesiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China. .,Jiangsu Province Key Laboratory of Anesthesiology & Jiangsu Province Laboratory of Anesthetic and Analgesia Application Technology, Xuzhou Medicine University, Xuzhou, China.
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Fiore NT, Austin PJ. Are the emergence of affective disturbances in neuropathic pain states contingent on supraspinal neuroinflammation? Brain Behav Immun 2016; 56:397-411. [PMID: 27118632 DOI: 10.1016/j.bbi.2016.04.012] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/11/2016] [Accepted: 04/22/2016] [Indexed: 12/28/2022] Open
Abstract
Neuro-immune interactions contribute to the pathogenesis of neuropathic pain due to peripheral nerve injury. A large body of preclinical evidence supports the idea that the immune system acts to modulate the sensory symptoms of neuropathy at both peripheral and central nervous system sites. The potential involvement of neuro-immune interactions in the highly debilitating affective disturbances of neuropathic pain, such as depression, anhedonia, impaired cognition and reduced motivation has received little attention. This is surprising given the widely accepted view that sickness behaviour, depression, cognitive impairment and other neuropsychiatric conditions can arise from inflammatory mechanisms. Moreover, there is a set of well-described immune-to-brain transmission mechanisms that explain how peripheral inflammation can lead to supraspinal neuroinflammation. In the last 5years increasing evidence has emerged that peripheral nerve injury induces supraspinal changes in cytokine or chemokine expression and alters glial cell activity. In this systematic review, based on strong preclinical evidence, we advance the argument that the emergence of affective disturbances in neuropathic pain states are contingent on pro-inflammatory mediators in the interconnected hippocampal-medial prefrontal circuitry that subserve affective behaviours. We explore how dysregulation of inflammatory mediators in these networks may result in affective disturbances through a wide variety of neuromodulatory mechanisms. There are also promising results from clinical trials showing that anti-inflammatory agents have efficacy in the treatment of a variety of neuropsychiatric conditions including depression and appear suited to sub-groups of patients with elevated pro-inflammatory profiles. Thus, although further research is required, aggressively targeting supraspinal pro-inflammatory mediators at critical time-points in appropriate clinical populations is likely to be a novel avenue to treat debilitating affective disturbances in neuropathic conditions.
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Affiliation(s)
- Nathan T Fiore
- Discipline of Anatomy & Histology, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| | - Paul J Austin
- Discipline of Anatomy & Histology, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia.
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Ang ST, Ariffin MZ, Khanna S. The forebrain medial septal region and nociception. Neurobiol Learn Mem 2016; 138:238-251. [PMID: 27444843 DOI: 10.1016/j.nlm.2016.07.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/08/2016] [Accepted: 07/17/2016] [Indexed: 10/21/2022]
Abstract
The forebrain medial septum, which is an integral part of the septo-hippocampal network, is implicated in sensorimotor integration, fear and anxiety, and spatial learning and memory. A body of evidence also suggests that the septal region affects experimental pain. Indeed, some explorations in humans have raised the possibility that the region may modulate clinical pain as well. This review explores the evidence that implicates the medial septum in nociception and suggests that non-overlapping circuits in the region facilitate acute nociceptive behaviors and defensive behaviors that reflect affect and cognitive appraisal, especially in relation to persistent nociception. In line with a role in nociception, the region modulates nociceptive responses in the neuraxis, including the hippocampus and the anterior cingulate cortex. The aforementioned forebrain regions have also been implicated in persistent/long-lasting nociception. The review also weighs the effects of the medial septum on nociception vis-à-vis the known roles of the region and emphasizes the fact that the region is a part of network of forebrain structures which have been long associated with reward, cognition and affect-motivation and are now implicated in persistent/long-lasting nociception.
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Affiliation(s)
- Seok Ting Ang
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Mohammed Zacky Ariffin
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Sanjay Khanna
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Neurobiology Program, Life Sciences Institute, National University of Singapore, Singapore.
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