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Bagheri Bavandpouri FS, Azizi A, Abbaszadeh F, Kiani A, Farzaei MH, Mohammadi-Noori E, Fakhri S, Echeverría J. Polydatin attenuated neuropathic pain and motor dysfunction following spinal cord injury in rats by employing its anti-inflammatory and antioxidant effects. Front Pharmacol 2024; 15:1452989. [PMID: 39193334 PMCID: PMC11347411 DOI: 10.3389/fphar.2024.1452989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 07/31/2024] [Indexed: 08/29/2024] Open
Abstract
Background Considering the complex pathological mechanisms behind spinal cord injury (SCI) and the adverse effects of present non-approved drugs against SCI, new studies are needed to introduce novel multi-target active ingredients with higher efficacy and lower side effects. Polydatin (PLD) is a naturally occurring stilbenoid glucoside recognized for its antioxidative and anti-inflammatory properties. This study aimed to assess the effects of PLD on sensory-motor function following SCI in rats. Methods Following laminectomy and clip compression injury at the thoracic 8 (T8)-T9 level of the spinal cord, rats were randomly assigned to five groups: Sham, SCI, and three groups receiving different doses of PLD treatment (1, 2, and 3 mg/kg). Over 4 weeks, behavioral tests were done such as von Frey, acetone drop, hot plate, Basso-Beattie-Bresnahan, and inclined plane test. At the end of the study, changes in catalase and glutathione activity, nitrite level, activity of matrix metalloproteinase 2 (MMP2) and MMP9 as well as spinal tissue remyelination/neurogenesis, were evaluated. Results The results revealed that PLD treatment significantly improved the behavioral performance of the animals starting from the first week after SCI. Additionally, PLD increased catalase, and glutathione levels, and MMP2 activity while reduced serum nitrite levels and MMP9. These positive effects were accompanied by a reduction in the size of the lesion and preservation of neuronal count. Conclusion In conclusion, PLD showed neuroprotective effects in SCI rats by employing anti-inflammatory and antioxidant effects, through which improve sensory and motor function.
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Affiliation(s)
| | - Atefeh Azizi
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Fatemeh Abbaszadeh
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Kiani
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Regenerative Medicine Research Center (RMRC), Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ehsan Mohammadi-Noori
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Javier Echeverría
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
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Ning S, Chen Y, Shao J, Zhu H, Zhang Z, Miao J. The effects of acteoside on locomotor recovery after spinal cord injury - The role of autophagy and apoptosis signaling pathway. Biomed Pharmacother 2024; 175:116607. [PMID: 38692056 DOI: 10.1016/j.biopha.2024.116607] [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: 01/24/2024] [Revised: 04/09/2024] [Accepted: 04/17/2024] [Indexed: 05/03/2024] Open
Abstract
In the current study, we investigated the effects of acteoside as a phenylpropanoid glycoside on interaction with neurons to assesses locomotor recovery after spinal cord injury (SCI) in rats by focusing on evaluating the factors involved in autophagy, apoptosis, inflammation and oxidative stress processes. 49 Spargue-Dawley rats were prepared and divided into seven healthy and SCI groups receiving different concentrations of acteoside. After 28 days of disease induction and treatment with acteoside, a BBB score test was used to evaluate locomotor activity. Then, by preparing spinal cord cell homogenates, the expression levels of MAP1LC3A, MAP-2, glial fibrillary acidic protein (GFAP), Nrf2, Keap-1, Caspase 3 (Casp3), Bax, Bcl-2, TNF-a, IL-1B, reactive oxygen species (ROS), and malondialdehyde (MDA) were measured. Improvement of locomotor activity in SCI rats receiving acteoside was observed two weeks after the beginning of the experiment and continued until the fourth week. Both MAP1LC3A and MAP-2 were significantly up-regulated in SCI rats treated with acteoside compared to untreated SCI rats, and GFAP levels were significantly decreased in these animals. Pro-apoptotic proteins Bax and Casp3 and anti-apoptotic protein Bcl-2 were down-regulated and up-regulated, respectively, in SCI rats receiving acteoside. In addition, a significant downregulation of iNOS, TNF-α, and IL-1β and a decrease in contents of both ROS and MDA as well as increases in Nrf2 and Keap-1 were seen in rats receiving acteoside. Furthermore, acteoside strongly interacted with MAP1LC3A, TNF-α, and Casp3 targets with binding affinities of -8.3 kcal/mol, -8.3 kcal/mol, and -8.5 kcal/mol, respectively, determined by molecular docking studies. In general, it can be concluded that acteoside has protective effects in SCI and can be considered as an adjuvant therapy in the treatment of this disease. However, more studies, especially clinical studies, are needed in this field.
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Affiliation(s)
- Shanglong Ning
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300211, China
| | - Yang Chen
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300211, China
| | - Jia Shao
- Department of Spine Surgery, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - Hui Zhu
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin 300000, China
| | - Zepei Zhang
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300211, China
| | - Jun Miao
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300211, China.
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Tiwari A, Albin B, Qubbaj K, Adhikari P, Yang IH. Phytic Acid Maintains Peripheral Neuron Integrity and Enhances Survivability against Platinum-Induced Degeneration via Reducing Reactive Oxygen Species and Enhancing Mitochondrial Membrane Potential. ACS Chem Neurosci 2024; 15:1157-1168. [PMID: 38445956 PMCID: PMC10958516 DOI: 10.1021/acschemneuro.3c00739] [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: 11/13/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 03/07/2024] Open
Abstract
Phytic acid (PA) has been reported to possess anti-inflammatory and antioxidant properties that are critical for neuroprotection in neuronal disorders. This raises the question of whether PA can effectively protect sensory neurons against chemotherapy-induced peripheral neuropathy (CIPN). Peripheral neuropathy is a dose-limiting side effect of chemotherapy treatment often characterized by severe and abnormal pain in hands and feet resulting from peripheral nerve degeneration. Currently, there are no effective treatments available that can prevent or cure peripheral neuropathies other than symptomatic management. Herein, we aim to demonstrate the neuroprotective effects of PA against the neurodegeneration induced by the chemotherapeutics cisplatin (CDDP) and oxaliplatin. Further aims of this study are to provide the proposed mechanism of PA-mediated neuroprotection. The neuronal protection and survivability against CDDP were characterized by axon length measurements and cell body counting of the dorsal root ganglia (DRG) neurons. A cellular phenotype study was conducted microscopically. Intracellular reactive oxygen species (ROS) was estimated by fluorogenic probe dichlorofluorescein. Likewise, mitochondrial membrane potential (MMP) was assessed by fluorescent MitoTracker Orange CMTMRos. Similarly, the mitochondria-localized superoxide anion radical in response to CDDP with and without PA was evaluated. The culture of primary DRG neurons with CDDP reduced axon length and overall neuronal survival. However, cotreatment with PA demonstrated that axons were completely protected and showed increased stability up to the 45-day test duration, which is comparable to samples treated with PA alone and control. Notably, PA treatment scavenged the mitochondria-specific superoxide radicals and overall intracellular ROS that were largely induced by CDDP and simultaneously restored MMP. These results are credited to the underlying neuroprotection of PA in a platinum-treated condition. The results also exhibited that PA had a synergistic anticancer effect with CDDP in ovarian cancer in vitro models. For the first time, PA's potency against CDDP-induced PN is demonstrated systematically. The overall findings of this study suggest the application of PA in CIPN prevention and therapeutic purposes.
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Affiliation(s)
- Arjun
Prasad Tiwari
- Center for Biomedical Engineering
and Science, Department of Mechanical Engineering and Engineering
Science, University of North Carolina at
Charlotte, Charlotte, North Carolina 28223, United States
| | - Bayne Albin
- Center for Biomedical Engineering
and Science, Department of Mechanical Engineering and Engineering
Science, University of North Carolina at
Charlotte, Charlotte, North Carolina 28223, United States
| | - Khayzaran Qubbaj
- Center for Biomedical Engineering
and Science, Department of Mechanical Engineering and Engineering
Science, University of North Carolina at
Charlotte, Charlotte, North Carolina 28223, United States
| | - Prashant Adhikari
- Center for Biomedical Engineering
and Science, Department of Mechanical Engineering and Engineering
Science, University of North Carolina at
Charlotte, Charlotte, North Carolina 28223, United States
| | - In Hong Yang
- Center for Biomedical Engineering
and Science, Department of Mechanical Engineering and Engineering
Science, University of North Carolina at
Charlotte, Charlotte, North Carolina 28223, United States
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Zhang RY, Zhu BF, Zhao JG, Zhao L, Wang LK. Electroacupuncture Stimulation Alleviates Inflammatory Pain in Male Rats by Suppressing Oxidative Stress. Physiol Res 2023; 72:657-667. [PMID: 38015764 PMCID: PMC10751055 DOI: 10.33549/physiolres.934965] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 06/13/2023] [Indexed: 01/05/2024] Open
Abstract
In the present study, we focused on whether the analgesic effect of Electroacupuncture (EA) is related to the regulation of oxidative stress. We established a chronic inflammatory pain model in male rats by a single injection of complete Freund's adjuvant (CFA) and then treated the animals with daily EA stimulation at the site of "zusanli". The analgesic effect of EA was evaluated by measuring the paw withdrawal threshold (PWT) when rats received mechanical and thermal pain stimulation. The levels of inflammation-related molecules and oxidative stress-related markers in the spinal cord were measured by western blotting or ELISA kits. EA stimulation and antioxidants effectively increased the PWT in CFA rats. Co-treatment of CFA rats with the ROS donor t-butyl hydroperoxide (t-BOOH) further decreased the PWT and weakened the analgesic effect of EA. EA treatment inhibited inflammation and oxidative stress, as shown by decreased levels of tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1beta), IL-6, and MDA and increased activity of SOD and catalase. Moreover, EA reduced the expression of p-p38, p-ERK, and p-p65 and simultaneously downregulated the expression of TRPV1 and TRPV4 in CFA rats. In an in vitro study, direct stimulation with t-BOOH to the C6 cells increased the production of TNF-alpha, IL-1beta, IL-6, activated p38, ERK, and p65 and up-regulated the expression of TRPV1 and TRPV4, and these effects could be prevented by the ROS scavenger PBN. Taken together, our data indicate that the inhibition of oxidative stress and the generation of ROS contribute to the analgesic effect of EA in male CFA rats.
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Affiliation(s)
- R Y Zhang
- Department of Pain Management, Anhui Medical University, Hospital of Hefei, Hefei, People's Republic of China.
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Haro Girón S, Monserrat Sanz J, Ortega MA, Garcia-Montero C, Fraile-Martínez O, Gómez-Lahoz AM, Boaru DL, de Leon-Oliva D, Guijarro LG, Atienza-Perez M, Diaz D, Lopez-Dolado E, Álvarez-Mon M. Prognostic Value of Malondialdehyde (MDA) in the Temporal Progression of Chronic Spinal Cord Injury. J Pers Med 2023; 13:jpm13040626. [PMID: 37109013 PMCID: PMC10144495 DOI: 10.3390/jpm13040626] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 04/05/2023] Open
Abstract
Background: Oxidative stress is a major signature of spinal cord injury (SCI). The altered levels of various oxidative stress markers have been demonstrated in acute and chronic SCI. However, the variation of these markers in patients with chronic SCI depending on the time since the initial injury has not been explored yet. Objective: Our aim was to measure plasma levels of malondialdehyde (MDA), a marker of lipid peroxidation in patients with SCI stratified in different periods of suffering the injury (0–5 years, 5–10 years, and more than 10 years). Patients and methods: This cross-sectional study enrolled patients with SCI (N = 105) from different periods of the lesion and healthy control (HC) subjects (N = 38): short period (SCI SP, N = 31, time of evolution less than 5 years); early chronic (SCI ECP, N = 32, time of evolution 5–15 years); and late chronic (SCI LCP, N = 42, time of evolution more than 15 years). The plasma levels of MDA were measured using a commercially available colorimetric assay. Results: Patients with SCI had significantly higher plasma levels of MDA than HC subjects. Receiver operating characteristic (ROC) curve analysis for plasma MDA levels in patients with SCI demonstrated areas under the curve (AUC) of 1 (HC vs. SCI-SP); 0.998 (HC vs. SCI-ECP); and 0.964 (HC vs. SCI-LCP). Additionally, three ROC curves were used to compare the different concentrations of MDA between the subgroups of patients with SCI, and the resulting AUCs were: 0.896 (SCI-SP vs. SCI-ECP); 0.840 (SCI-ECP vs. SCI-LCP); and 0.979 (SCI-SP vs. SCI-LCP). Conclusion: Plasma concentration of MDA can be considered as an oxidative stress biomarker to assess the prognosis of SCI in chronic stages.
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Affiliation(s)
- Sergio Haro Girón
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Jorge Monserrat Sanz
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Miguel A. Ortega
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Cielo Garcia-Montero
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Oscar Fraile-Martínez
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Ana M. Gómez-Lahoz
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Diego Liviu Boaru
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Diego de Leon-Oliva
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Luis G. Guijarro
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
- Unit of Biochemistry and Molecular Biology, Department of System Biology (CIBEREHD), University of Alcalá, 28801 Alcala de Henares, Spain
| | - Mar Atienza-Perez
- Service of Rehabilitation, National Hospital for Paraplegic Patients, Carr. de la Peraleda, S/N, 45004 Toledo, Spain
| | - David Diaz
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Elisa Lopez-Dolado
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
- Service of Rehabilitation, National Hospital for Paraplegic Patients, Carr. de la Peraleda, S/N, 45004 Toledo, Spain
| | - Melchor Álvarez-Mon
- Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcalá de Henares, Spain
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
- Service of Internal Medicine and Immune System Diseases-Rheumatology, University Hospital Príncipe de Asturias, (CIBEREHD), 28806 Alcalá de Henares, Spain
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Frangos ZJ, Wilson KA, Aitken HM, Cantwell Chater R, Vandenberg RJ, O'Mara ML. Membrane cholesterol regulates inhibition and substrate transport by the glycine transporter, GlyT2. Life Sci Alliance 2023; 6:e202201708. [PMID: 36690444 PMCID: PMC9873984 DOI: 10.26508/lsa.202201708] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/25/2023] Open
Abstract
Membrane cholesterol binds to and modulates the function of various SLC6 neurotransmitter transporters, including stabilizing the outward-facing conformation of the dopamine and serotonin transporters. Here, we investigate how cholesterol binds to GlyT2 (SLC6A5), modulates glycine transport rate, and influences bioactive lipid inhibition of GlyT2. Bioactive lipid inhibitors are analgesics that bind to an allosteric site accessible from the extracellular solution when GlyT2 adopts an outward-facing conformation. Using molecular dynamics simulations, mutagenesis, and cholesterol depletion experiments, we show that bioactive lipid inhibition of glycine transport is modulated by the recruitment of membrane cholesterol to a binding site formed by transmembrane helices 1, 5, and 7. Recruitment involves cholesterol flipping from its membrane orientation, and insertion of the 3' hydroxyl group into the cholesterol binding cavity, close to the allosteric site. The synergy between cholesterol and allosteric inhibitors provides a novel mechanism of inhibition and a potential avenue for the development of potent GlyT2 inhibitors as alternative therapeutics for the treatment of neuropathic pain and therapeutics that target other SLC6 transporters.
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Affiliation(s)
- Zachary J Frangos
- Molecular Biomedicine Theme, School of Medical Sciences, University of Sydney, Sydney, Australia
| | - Katie A Wilson
- Research School of Chemistry, College of Science, The Australian National University, Canberra, Australia
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - Heather M Aitken
- Research School of Chemistry, College of Science, The Australian National University, Canberra, Australia
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Australia
| | - Ryan Cantwell Chater
- Molecular Biomedicine Theme, School of Medical Sciences, University of Sydney, Sydney, Australia
| | - Robert J Vandenberg
- Molecular Biomedicine Theme, School of Medical Sciences, University of Sydney, Sydney, Australia
| | - Megan L O'Mara
- Research School of Chemistry, College of Science, The Australian National University, Canberra, Australia
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Australia
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Sung CS, Cheng HJ, Chen NF, Tang SH, Kuo HM, Sung PJ, Chen WF, Wen ZH. Antinociceptive Effects of Aaptamine, a Sponge Component, on Peripheral Neuropathy in Rats. Mar Drugs 2023; 21:md21020113. [PMID: 36827154 PMCID: PMC9963100 DOI: 10.3390/md21020113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
Aaptamine, a natural marine compound isolated from the sea sponge, has various biological activities, including delta-opioid agonist properties. However, the effects of aaptamine in neuropathic pain remain unclear. In the present study, we used a chronic constriction injury (CCI)-induced peripheral neuropathic rat model to explore the analgesic effects of intrathecal aaptamine administration. We also investigated cellular angiogenesis and lactate dehydrogenase A (LDHA) expression in the ipsilateral lumbar spinal cord after aaptamine administration in CCI rats by immunohistofluorescence. The results showed that aaptamine alleviates CCI-induced nociceptive sensitization, allodynia, and hyperalgesia. Moreover, aaptamine significantly downregulated CCI-induced vascular endothelial growth factor (VEGF), cluster of differentiation 31 (CD31), and LDHA expression in the spinal cord. Double immunofluorescent staining showed that the spinal VEGF and LDHA majorly expressed on astrocytes and neurons, respectively, in CCI rats and inhibited by aaptamine. Collectively, our results indicate aaptamine's potential as an analgesic agent for neuropathic pain. Furthermore, inhibition of astrocyte-derived angiogenesis and neuronal LDHA expression might be beneficial in neuropathy.
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Affiliation(s)
- Chun-Sung Sung
- Department of Anesthesiology, Division of Pain Management, Taipei Veterans General Hospital, Taipei 112201, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Hao-Jung Cheng
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
| | - Nan-Fu Chen
- Department of Surgery, Division of Neurosurgery, Kaohsiung Armed Forces General Hospital, Kaohsiung 802301, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
| | - Shih-Hsuan Tang
- Department of Anesthesiology, Division of Pain Management, Taipei Veterans General Hospital, Taipei 112201, Taiwan
| | - Hsiao-Mei Kuo
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
| | - Ping-Jyun Sung
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
- National Museum of Marine Biology and Aquarium, Pingtung 944401, Taiwan
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Wu-Fu Chen
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833401, Taiwan
- Correspondence: (W.-F.C.); (Z.-H.W.)
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan
- Correspondence: (W.-F.C.); (Z.-H.W.)
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Soler-Martínez R, Deulofeu M, Bagó-Mas A, Dubový P, Verdú E, Fiol N, Boadas-Vaello P. Central Neuropathic Pain Development Modulation Using Coffee Extract Major Polyphenolic Compounds in Spinal-Cord-Injured Female Mice. BIOLOGY 2022; 11:1617. [PMID: 36358318 PMCID: PMC9687351 DOI: 10.3390/biology11111617] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/24/2022] [Accepted: 11/03/2022] [Indexed: 08/18/2024]
Abstract
It was recently shown that coffee polyphenolic extract exerts preventive effects on central neuropathic pain development, but it is unknown whether its beneficial effects are associated with only one of its major polyphenolic compounds or if the whole extract is needed to exert such effects. The main objective of this study was to determine whether the separate administration of major polyphenols from coffee extract exerts preventive effects on the development of central neuropathic pain in mice compared with the effects of the whole coffee extract. Thus, spinal-cord-injured female ICR-CD1 mice were daily treated with either coffee extract or its major polyphenolic compounds during the first week, and reflexive and nonreflexive pain responses were evaluated within the acute phase of spinal cord injury. In addition, the injury-induced gliosis and dorsal horn sprouting were evaluated with immunohistochemistry. The results showed that the coffee extract prevented spinal cord injury-induced neuropathic pain, whereas its major polyphenolic compounds resulted in reflexive pain response attenuation. Both preventive and attenuation effects were associated with gliosis and afferent fiber sprouting modulation. Overall, the results suggested that coffee extract effects may be associated with potential synergistic mechanisms exerted by its major polyphenolic compounds and not by the sole effect of only one of them.
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Affiliation(s)
- Roger Soler-Martínez
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, E-17003 Girona, Catalonia, Spain
| | - Meritxell Deulofeu
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, E-17003 Girona, Catalonia, Spain
| | - Anna Bagó-Mas
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, E-17003 Girona, Catalonia, Spain
| | - Petr Dubový
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic
| | - Enrique Verdú
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, E-17003 Girona, Catalonia, Spain
| | - Núria Fiol
- Department of Chemical Engineering, Agriculture and Food Technology, Polytechnic School, University of Girona, E-17003 Girona, Catalonia, Spain
| | - Pere Boadas-Vaello
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, E-17003 Girona, Catalonia, Spain
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9
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Wang S, Qian W, Chen S, Xian S, Jin M, Liu Y, Zhang H, Qin H, Zhang X, Zhu J, Yue X, Shi C, Yan P, Huang R, Huang Z. Bibliometric analysis of research on gene expression in spinal cord injury. Front Mol Neurosci 2022; 15:1023692. [PMID: 36385766 PMCID: PMC9661966 DOI: 10.3389/fnmol.2022.1023692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 10/10/2022] [Indexed: 11/29/2022] Open
Abstract
Background Spinal cord injury (SCI) is a severe disease with motor and sensory function being destroyed, which leads to a poor prognosis and a serious financial burden. It is urgent to figure out the molecular and pathological mechanisms of SCI to develop feasible therapeutic strategies. This article aims to review documents focused on gene expression in SCI and summarize research hotspots and the development process in this field. Methods Publications of SCI-related studies from 2000 to 2022 were retrieved from the Web of Science Core Collection database. Biblioshiny was used to evaluate the research performance, core authors, journals and contributed countries, together with trend topics, hotspots in the field, and keyword co-occurrence analysis. Visualized images were obtained to help comprehension. Results Among 351 documents, it was found that the number of annual publications increased in general. The most productive country was China, followed by the United States with the highest influence and the most international cooperation. Plos One was the journal of the maximum publications, while Journal of Neuroscience was the most influential one. According to keyword co-occurrence and trend topics analysis, these articles mainly focused on molecular and pathological mechanisms as well as novel therapies for SCI. Neuropathic pain, axonal regeneration and messenger RNA are significant and promising research areas. Conclusion As the first bibliometric study focused on gene expression in SCI, we demonstrated the evolution of the field and provided future research directions like mechanisms and treatments of SCI with great innovativeness and clinical value. Further studies are recommended to develop more viable therapeutic methods for SCI.
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Affiliation(s)
- Siqiao Wang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Division of Spine, Department of Orthopedics, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Tongji University School of Medicine, Shanghai, China
| | - Weijin Qian
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shaofeng Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Shuyuan Xian
- Tongji University School of Medicine, Shanghai, China
| | - Minghao Jin
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yifan Liu
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hao Zhang
- Department of Orthopedics, Naval Medical Center of PLA, Second Military Medical University Shanghai, Shanghai, China
| | - Hengwei Qin
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinkun Zhang
- Tongji University School of Medicine, Shanghai, China
| | - Jiwen Zhu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xi Yue
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chaofeng Shi
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Penghui Yan
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Zongqiang Huang, ; Runzhi Huang, ; Penghui Yan,
| | - Runzhi Huang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, China
- Research Unit of Key Techniques for Treatment of Burns and Combined Burns and Trauma Injury, Chinese Academy of Medical Sciences, Shanghai, China
- *Correspondence: Zongqiang Huang, ; Runzhi Huang, ; Penghui Yan,
| | - Zongqiang Huang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Zongqiang Huang, ; Runzhi Huang, ; Penghui Yan,
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10
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Green-Fulgham SM, Harland ME, Ball JB, Li J, Lacagnina MJ, D’Angelo H, Dreher RA, Willcox KF, Lorca SA, Kwilasz AJ, Maier SF, Watkins LR, Grace PM. Preconditioning by voluntary wheel running attenuates later neuropathic pain via nuclear factor E2-related factor 2 antioxidant signaling in rats. Pain 2022; 163:1939-1951. [PMID: 35486864 PMCID: PMC9308835 DOI: 10.1097/j.pain.0000000000002589] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 01/19/2022] [Indexed: 02/04/2023]
Abstract
ABSTRACT Animal and human studies have shown that exercise prior to nerve injury prevents later chronic pain, but the mechanisms of such preconditioning remain elusive. Given that exercise acutely increases the formation of free radicals, triggering antioxidant compensation, we hypothesized that voluntary running preconditioning would attenuate neuropathic pain by supporting redox homeostasis after sciatic nerve injury in male and female rats. We show that 6 weeks of voluntary wheel running suppresses neuropathic pain development induced by chronic constriction injury across both sexes. This attenuation was associated with reduced nitrotyrosine immunoreactivity-a marker for peroxynitrite-at the sciatic nerve injury site. Our data suggest that prior voluntary wheel running does not reduce the production of peroxynitrite precursors, as expression levels of inducible nitric oxide synthase and NADPH oxidase 2 were unchanged. Instead, voluntary wheel running increased superoxide scavenging by elevating expression of superoxide dismutases 1 and 2. Prevention of neuropathic pain was further associated with the activation of the master transcriptional regulator of the antioxidant response, nuclear factor E2-related factor 2 (Nrf2). Six weeks of prior voluntary wheel running increased Nrf2 nuclear translocation at the sciatic nerve injury site; in contrast, 3 weeks of prior wheel running, which failed to prevent neuropathic pain, had no effect on Nrf2 nuclear translocation. The protective effects of prior voluntary wheel running were mediated by Nrf2, as suppression was abolished across both sexes when Nrf2 activation was blocked during the 6-week running phase. This study provides insight into the mechanisms by which physical activity may prevent neuropathic pain. Preconditioning by voluntary wheel running, terminated prior to nerve injury, suppresses later neuropathic pain in both sexes, and it is modulated through the activation of Nrf2-antioxidant signaling.
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Affiliation(s)
- Suzanne M. Green-Fulgham
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Michael E. Harland
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Jayson B. Ball
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Jiahe Li
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- MD Anderson Pain Research Consortium, Houston, TX 77030, USA
| | - Michael J. Lacagnina
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- MD Anderson Pain Research Consortium, Houston, TX 77030, USA
| | - Heather D’Angelo
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Renee A. Dreher
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Kendal F. Willcox
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- MD Anderson Pain Research Consortium, Houston, TX 77030, USA
| | - Sabina A. Lorca
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Andrew J. Kwilasz
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Steven F. Maier
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Linda R. Watkins
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA
| | - Peter M. Grace
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- MD Anderson Pain Research Consortium, Houston, TX 77030, USA
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11
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Bagó-Mas A, Korimová A, Deulofeu M, Verdú E, Fiol N, Svobodová V, Dubový P, Boadas-Vaello P. Polyphenolic grape stalk and coffee extracts attenuate spinal cord injury-induced neuropathic pain development in ICR-CD1 female mice. Sci Rep 2022; 12:14980. [PMID: 36056079 PMCID: PMC9440260 DOI: 10.1038/s41598-022-19109-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 08/24/2022] [Indexed: 11/09/2022] Open
Abstract
More than half of spinal cord injury (SCI) patients develop central neuropathic pain (CNP), which is largely refractory to current treatments. Considering the preclinical evidence showing that polyphenolic compounds may exert antinociceptive effects, the present work aimed to study preventive effects on SCI-induced CNP development by repeated administration of two vegetal polyphenolic extracts: grape stalk extract (GSE) and coffee extract (CE). Thermal hyperalgesia and mechanical allodynia were evaluated at 7, 14 and 21 days postinjury. Then, gliosis, ERK phosphorylation and the expression of CCL2 and CX3CL1 chemokines and their receptors, CCR2 and CX3CR1, were analyzed in the spinal cord. Gliosis and CX3CL1/CX3CR1 expression were also analyzed in the anterior cingulate cortex (ACC) and periaqueductal gray matter (PAG) since they are supraspinal structures involved in pain perception and modulation. GSE and CE treatments modulated pain behaviors accompanied by reduced gliosis in the spinal cord and both treatments modulated neuron-glia crosstalk-related biomolecules expression. Moreover, both extracts attenuated astrogliosis in the ACC and PAG as well as microgliosis in the ACC with an increased M2 subpopulation of microglial cells in the PAG. Finally, GSE and CE prevented CX3CL1/CX3CR1 upregulation in the PAG, and modulated their expression in ACC. These findings suggest that repeated administrations of either GSE or CE after SCI may be suitable pharmacologic strategies to attenuate SCI-induced CNP development by means of spinal and supraspinal neuroinflammation modulation.
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Affiliation(s)
- Anna Bagó-Mas
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Andrea Korimová
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Meritxell Deulofeu
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Enrique Verdú
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Núria Fiol
- Department of Chemical Engineering, Agriculture and Food Technology, Polytechnic School, University of Girona, Girona, Spain
| | - Viktorie Svobodová
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Petr Dubový
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, Brno, Czechia.
| | - Pere Boadas-Vaello
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain.
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12
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Eid SA, Savelieff MG, Eid AA, Feldman EL. Nox, Nox, Are You There? The Role of NADPH Oxidases in the Peripheral Nervous System. Antioxid Redox Signal 2022; 37:613-630. [PMID: 34861780 PMCID: PMC9634986 DOI: 10.1089/ars.2021.0135] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 11/23/2021] [Accepted: 11/26/2021] [Indexed: 02/06/2023]
Abstract
Significance: Reactive oxygen species (ROS) contribute to multiple aspects of peripheral nervous system (PNS) biology ranging from physiological processes (e.g., axonal outgrowth and regeneration) to pathophysiology (e.g., nerve degeneration). Although ROS are derived from multiple sources, NADPH oxidase (Nox) family members are dedicated to ROS generation. Noxs are expressed in the PNS, and their overexpression is associated with detrimental effects on nerve function and contributes, at least in part, to peripheral neuropathies. Recent Advances: Of the seven members, studies mostly focused on Nox1, Nox2, and Nox4, which are expressed in the PNS in a cell-specific manner. We have also recently identified human Nox5 in sural nerve biopsies. When maintained at homeostatic levels, Noxs regulate several aspects of peripheral nerve health, most notably neurite outgrowth and axonal regeneration following nerve lesion. While Nox2 and Nox4 dysregulation is a major source of oxidative stress in PNS disorders, including neuropathic pain and diabetic peripheral neuropathy, recent evidence also implicates Nox1 and Nox5. Critical Issues: Although there is compelling evidence for a direct role of Noxs on nerve function, little is known about their subcellular localization, intercellular regulation, and interaction. These, together with redox signaling, are considered crucial components of nerve redox status. In addition, the lack of isoform-specific inhibitors limits conclusions about the physiological role of Noxs in the PNS and their therapeutic potential in peripheral neuropathies. Future Directions: Future research using isoform-specific genetic and pharmacological approaches are therefore needed to better understand the significance of Nox enzymes in PNS (patho) physiology. Antioxid. Redox Signal. 37, 613-630.
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Affiliation(s)
- Stéphanie A. Eid
- Department of Neurology, School of Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Neurology, NeuroNetwork for Emerging Therapies, University of Michigan, Ann Arbor, Michigan, USA
| | - Masha G. Savelieff
- Department of Neurology, NeuroNetwork for Emerging Therapies, University of Michigan, Ann Arbor, Michigan, USA
| | - Assaad A. Eid
- Department of Anatomy, Cell Biology, and Physiological Sciences, Faculty of Medicine and Medical Center, American University of Beirut, Beirut, Lebanon
| | - Eva L. Feldman
- Department of Neurology, School of Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Neurology, NeuroNetwork for Emerging Therapies, University of Michigan, Ann Arbor, Michigan, USA
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13
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Islam F, Bepary S, Nafady MH, Islam MR, Emran TB, Sultana S, Huq MA, Mitra S, Chopra H, Sharma R, Sweilam SH, Khandaker MU, Idris AM. Polyphenols Targeting Oxidative Stress in Spinal Cord Injury: Current Status and Future Vision. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8741787. [PMID: 36046682 PMCID: PMC9423984 DOI: 10.1155/2022/8741787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/03/2022] [Accepted: 08/03/2022] [Indexed: 02/07/2023]
Abstract
A spinal cord injury (SCI) occurs when the spinal cord is deteriorated or traumatized, leading to motor and sensory functions lost even totally or partially. An imbalance within the generation of reactive oxygen species and antioxidant defense levels results in oxidative stress (OS) and neuroinflammation. After SCI, OS and occurring pathways of inflammations are significant strenuous drivers of cross-linked dysregulated pathways. It emphasizes the significance of multitarget therapy in combating SCI consequences. Polyphenols, which are secondary metabolites originating from plants, have the promise to be used as alternative therapeutic agents to treat SCI. Secondary metabolites have activity on neuroinflammatory, neuronal OS, and extrinsic axonal dysregulated pathways during the early stages of SCI. Experimental and clinical investigations have noted the possible importance of phenolic compounds as important phytochemicals in moderating upstream dysregulated OS/inflammatory signaling mediators and axonal regeneration's extrinsic pathways after the SCI probable significance of phenolic compounds as important phytochemicals in mediating upstream dysregulated OS/inflammatory signaling mediators. Furthermore, combining polyphenols could be a way to lessen the effects of SCI.
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Affiliation(s)
- Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Sristy Bepary
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Mohamed H. Nafady
- Faculty of Applied Health Science Technology, Misr University for Science and Technology, Giza, Egypt
| | - Md. Rezaul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
| | - Sharifa Sultana
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Md. Amdadul Huq
- Department of Food and Nutrition, Chung Ang University, Anseong-Si, Gyeonggi-Do 17546, Republic of Korea
| | - Saikat Mitra
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Rohit Sharma
- Department of Rasashastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Sherouk Hussein Sweilam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Egyptian Russian University, Cairo-Suez Road, Badr City 11829, Egypt
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia
| | - Abubakr M. Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 62529, Saudi Arabia
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14
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Lysophosphatidylcholine: Potential Target for the Treatment of Chronic Pain. Int J Mol Sci 2022; 23:ijms23158274. [PMID: 35955410 PMCID: PMC9368269 DOI: 10.3390/ijms23158274] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/22/2022] [Accepted: 07/23/2022] [Indexed: 12/26/2022] Open
Abstract
The bioactive lipid lysophosphatidylcholine (LPC), a major phospholipid component of oxidized low-density lipoprotein (Ox-LDL), originates from the cleavage of phosphatidylcholine by phospholipase A2 (PLA2) and is catabolized to other substances by different enzymatic pathways. LPC exerts pleiotropic effects mediated by its receptors, G protein-coupled signaling receptors, Toll-like receptors, and ion channels to activate several second messengers. Lysophosphatidylcholine (LPC) is increasingly considered a key marker/factor positively in pathological states, especially inflammation and atherosclerosis development. Current studies have indicated that the injury of nervous tissues promotes oxidative stress and lipid peroxidation, as well as excessive accumulation of LPC, enhancing the membrane hyperexcitability to induce chronic pain, which may be recognized as one of the hallmarks of chronic pain. However, findings from lipidomic studies of LPC have been lacking in the context of chronic pain. In this review, we focus in some detail on LPC sources, biochemical pathways, and the signal-transduction system. Moreover, we outline the detection methods of LPC for accurate analysis of each individual LPC species and reveal the pathophysiological implication of LPC in chronic pain, which makes it an interesting target for biomarkers and the development of medicine regarding chronic pain.
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15
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Khan H, Singh TG, Dahiya RS, Abdel-Daim MM. α-Lipoic Acid, an Organosulfur Biomolecule a Novel Therapeutic Agent for Neurodegenerative Disorders: An Mechanistic Perspective. Neurochem Res 2022; 47:1853-1864. [PMID: 35445914 DOI: 10.1007/s11064-022-03598-w] [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: 01/17/2022] [Revised: 03/31/2022] [Accepted: 04/02/2022] [Indexed: 10/18/2022]
Abstract
Lipoic acid (α-LA) (1,2-dithiolane3-pentanoic acid (C8H14O2S2) is also called thioctic acid with an oxidized (disulfide, LA) and a reduced (di-thiol: dihydro-lipoic acid, DHLA) form of LA. α-LA is a potent anti-oxidative agent that has a significant potential to treat neurodegenerative disorders. α-LA is both hydrophilic and hydrophobic in nature. It is widely distributed in plants and animals in cellular membranes and in the cytosol, which is responsible for LA's action in both the cytosol and plasma membrane. A systematic literature review of Bentham, Scopus, PubMed, Medline, and EMBASE (Elsevier) databases was carried out to understand the Nature and mechanistic interventions of the α-Lipoic acid for central nervous system diseases. Moreover, α-LA readily crosses the blood-brain barrier, which is a significant factor for CNS activities. The mechanisms of α-LA reduction are highly tissue-specific. α-LA produces its neuroprotective effect by inhibiting reactive oxygen species formation and neuronal damage, modulating protein levels, and promoting neurotransmitters and anti-oxidant levels. Hence, the execution of α-LA as a therapeutic ingredient in the therapy of neurodegenerative disorders is promising. Finally, based on evidence, it can be concluded that α-LA can prevent diseases related to the nervous system.
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Affiliation(s)
- Heena Khan
- Chitkara College of Pharmacy, Chitkara University, 140401, Punjab, India
| | | | | | - Mohamed M Abdel-Daim
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, 21442, Jeddah, Saudi Arabia.,Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, 41522, Ismailia, Egypt
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16
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Neuroinflammation and apoptosis after surgery for a rat model of double-level cervical cord compression. Neurochem Int 2022; 157:105340. [DOI: 10.1016/j.neuint.2022.105340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 02/11/2022] [Accepted: 04/01/2022] [Indexed: 11/17/2022]
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17
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Jang A, Choi GE, Kim YJ, Lee GH, Hyun KY. Neuroprotective properties of ethanolic extract of Citrus unshiu Markovich peel through NADPH oxidase 2 inhibition in chemotherapy-induced neuropathic pain animal model. Phytother Res 2021; 35:6918-6931. [PMID: 34818693 DOI: 10.1002/ptr.7304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 08/17/2021] [Accepted: 09/08/2021] [Indexed: 11/07/2022]
Abstract
The present study aimed to determine the antioxidant effect of Citrus unshiu Markovich (CUM) extract in neuronal cell lines under oxidative stress and to investigate the effect of chemotherapy-induced peripheral neuropathy (CIPN) on the nociceptive response in a preclinical mice model. We tested the inhibition of H2 O2 in Neuro2A cells treated with CUM. Experimental animals were treated with oxaliplatin to induce CINP, and then administered oral CUM for 4 weeks in order to observe the effect of CUM. Animals were evaluated weekly for thermal hyperalgesia and digital motor nerve conduction velocity (NCV). Lumbar dorsal root ganglia (DRG) isolated from each animal were evaluated through immunochemical and western blot analysis for nerve damage, inflammatory response, and expression of redox signaling factors. The main mechanisms were determined to be decreased inducible nitric oxide synthase (iNOS) production due to the inhibition of NADPH oxidase 2 (NOX2). To determine the functional role of NOX2 in CINP, we administrated CUM into NOX2-deficient mice with neuropathic pain. Therefore, we suggest that CUM controls the expression levels of inflammatory factors in CINP via NOX2 inactivation. This study demonstrated that a complementary medicine such as CUM might be a potential novel therapeutic agent for the treatment of CINP.
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Affiliation(s)
- Aelee Jang
- Department of Nursing, University of Ulsan, Ulsan, Republic of Korea
| | - Go-Eun Choi
- Department of Clinical Laboratory Science, Catholic University of Pusan, Busan, Republic of Korea
| | - Yoo-Jeong Kim
- Department of Clinical Laboratory Science, Catholic University of Pusan, Busan, Republic of Korea
| | - Gil-Hyun Lee
- Department of Clinical Laboratory Science, Dong-Eui University, Busan, Republic of Korea
| | - Kyung-Yae Hyun
- Department of Clinical Laboratory Science, Dong-Eui University, Busan, Republic of Korea
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18
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Li S, Zhao F, Tang Q, Xi C, He J, Wang Y, Zhu MX, Cao Z. Sarco/endoplasmic reticulum Ca 2+ -ATPase 2b mediates oxidation-induced endoplasmic reticulum stress to regulate neuropathic pain. Br J Pharmacol 2021; 179:2016-2036. [PMID: 34811737 DOI: 10.1111/bph.15744] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/24/2021] [Accepted: 11/05/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Neuropathic pain is a widespread health problem with limited curative treatment. Decreased sarco/endoplasmic reticulum Ca2+ -ATPase (SERCA) expression has been reported in dorsal root ganglion (DRG) of animals suffering from neuropathic pain. We aimed to establish the relationship between SERCA expression and the pain responses and to elucidate the underlying molecular mechanism. EXPERIMENTAL APPROACH Neuropathic pain was modeled using rat chronic constriction injury (CCI). Ca2+ imaging and current clamp patch-clamp were used to determine cytosolic Ca2+ levels and action potential firing, respectively. Western blots, immunofluorescence staining and RT-PCR were used to quantitatively assess protein and mRNA expression, respectively. H&E staining and coupled enzyme assay were used to evaluate the nerve injury and SERCA2b activity, respectively. KEY RESULTS SERCA2b is the predominant SERCA isoform in rat DRG and its expression is decreased after CCI at mRNA, protein and activity levels. Whereas inhibiting SERCA with thapsigargin causes neuronal hyperexcitation, nerve injury, ER stress, satellite glial cell activation and mechanical allodynia, activating SERCA by CDN1163 or overexpressing SERCA2b in DRG after CCI produces long-term relief of mechanical and thermal allodynia with accompanied morphological and functional restoration through alleviation of ER stress. Furthermore, the downregulation of DRG SERCA2b in CCI rats is caused by increased production of reactive oxygen species (ROS) through Sp1-dependent transcriptional inhibition. CONCLUSION AND IMPLICATIONS Our findings reveal a novel pathway centering around SERCA2b as the key molecule underlying the mechanism of development and maintenance of neuropathic pain, and SERCA2b activators have the potential for therapeutic treatment of neuropathic pain.
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Affiliation(s)
- Shaoheng Li
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Fang Zhao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Qinglian Tang
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Chuchu Xi
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Jing He
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yujing Wang
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Zhengyu Cao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
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19
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Wang C, Xu B, Wang P, Yu W, Zeng X, Xiong N, Yin P, Liu Q, Lin H. Association of dyslipidemia with chronic non-malignant pain in elderly patients with femoral neck fractures treated by primary total hip arthroplasty: a retrospective study. J Int Med Res 2021; 49:3000605211045224. [PMID: 34590917 PMCID: PMC8489765 DOI: 10.1177/03000605211045224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE The association of chronic non-malignant pain (CNP) with dyslipidemia is unclear. This retrospective study was performed to evaluate the association between CNP and dyslipidemia in elderly patients with femoral neck fractures (FNFs) treated by primary unilateral total hip arthroplasty (THA). METHODS We retrospectively identified 521 consecutive patients with FNFs (AO/OTA type 31B) who underwent primary unilateral THA from 2009 to 2021. The study population was divided into patients with and without CNP. Serum lipids were measured for each patient. The association between CNP and dyslipidemia was assessed using a multivariate binary logistic regression model. RESULTS In total, 436 patients (220 with CNP, 216 without CNP) were eligible for analysis. In the quantile regression, the adverse effect of CNP was significantly attenuated by resilience in patients with a high high-density lipoprotein (HDL) concentration and low low-density lipoprotein (LDL) concentration. The multivariate binary logistic regression model showed that the HDL and LDL concentrations were the only variables significantly associated with the development of CNP. CONCLUSION Both a low HDL and high LDL concentration may result in the occurrence of CNP in elderly patients with FNFs treated by primary unilateral THA.
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Affiliation(s)
- Chen Wang
- Department of Anaesthesiology, Wuhan Fourth Hospital; Pu'ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, China
| | - Bo Xu
- Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
| | - Pengfei Wang
- Department of Emergency Medicine, The Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Haizhu District, Guangzhou, China
| | - Weiguang Yu
- Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
| | - Xianshang Zeng
- Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
| | - Nana Xiong
- Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
| | - Pingping Yin
- Department of Anaesthesiology, Wuhan Fourth Hospital; Pu'ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, China
| | - Qilong Liu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
| | - Huanyi Lin
- Department of Urinary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
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20
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Deng Y, Wu Q, Chen W, Zhu L, Liu W, Xia F, Sun L, Lin X, Zeng R. Lipidomics reveals association of circulating lipids with body mass index and outcomes in IgA nephropathy patients. J Mol Cell Biol 2021; 13:mjab040. [PMID: 34272854 PMCID: PMC8697343 DOI: 10.1093/jmcb/mjab040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/16/2021] [Accepted: 03/30/2021] [Indexed: 11/12/2022] Open
Abstract
IgA nephropathy (IgAN) is a leading cause of chronic kidney disease (CKD), which are commonly accompanied by dyslipidemia. Obesity is also associated with dyslipidemia and risk of CKD, but the relation of the dyslipidemia patterns with obesity and disease progression in IgAN patients remains unknown. Traditional Chinese medicine (TCM) and the combined treatment with corticosteroids and TCM have been shown to be of benefit for IgAN patients, but predictive markers for guiding these treatments are lacking. Here, we quantified 545 lipid species in the plasma from 196 participants, including 140 IgAN patients and 56 healthy volunteers, and revealed an altered plasma lipidome in IgAN patients as compared to healthy participants. Association analysis showed that a sub-group of glycerides, particularly triacylglycerols (TGs) containing docosahexaenoic acid, were positively associated with high body mass index (BMI) in under- or normal weight IgAN patients, while several free fatty acids and sphingomyelins were positively associated with high BMI in overweight or obese IgAN patients. Further, our study suggested that elevated levels of eight lipids, mainly TG species containing linolenic acid, were independent risk factors for IgAN progression and also reported the prospective association of circulating lipids with treatment outcomes in IgAN. Taken together, our findings may not only help to achieve precision medicine but also provide a knowledge base for dietary intervention in the treatment of IgAN.
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Affiliation(s)
- Yueyi Deng
- Department of Nephrology, Longhua Hospital, Shanghai University of Traditional
Chinese Medicine, Shanghai 200032, China
| | - Qingqing Wu
- Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in
Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031,
China
| | - Wanjia Chen
- Department of Nephrology, Longhua Hospital, Shanghai University of Traditional
Chinese Medicine, Shanghai 200032, China
| | - Li Zhu
- Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in
Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031,
China
| | - Wangyi Liu
- Department of Nephrology, Longhua Hospital, Shanghai University of Traditional
Chinese Medicine, Shanghai 200032, China
| | - Fangying Xia
- Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in
Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031,
China
| | - Liang Sun
- Shanghai Institute of Nutrition and Health, Chinese Academy of
Sciences, Shanghai 200031, China
| | - Xu Lin
- Shanghai Institute of Nutrition and Health, Chinese Academy of
Sciences, Shanghai 200031, China
| | - Rong Zeng
- Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in
Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031,
China
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21
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Gasparin AT, Rosa ES, Jesus CHA, Guiloski IC, da Silva de Assis HC, Beltrame OC, Dittrich RL, Pacheco SDG, Zanoveli JM, da Cunha JM. Bixin attenuates mechanical allodynia, anxious and depressive-like behaviors associated with experimental diabetes counteracting oxidative stress and glycated hemoglobin. Brain Res 2021; 1767:147557. [PMID: 34107278 DOI: 10.1016/j.brainres.2021.147557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/10/2021] [Accepted: 06/04/2021] [Indexed: 12/17/2022]
Abstract
Neuropathic pain, depression, and anxiety are common comorbidities in diabetic patients, whose pathophysiology involves hyperglycemia-induced increased oxidative stress. Bixin (BIX), an apocarotenoid extracted from the seeds of Bixa orellana, has been used in traditional medicine to treat diabetes and has been recognized by its antioxidant profile. We aimed to investigate the effect of the BIX over the mechanical allodynia, depressive, and anxious-like behaviors associated with experimental diabetes, along with its involved mechanisms. Streptozotocin-induced diabetic rats were treated for 17 days (starting 14 days after diabetes induction) with the corresponding vehicle, BIX (10, 30 or 90 mg/kg; p.o), or INS (6 IU; s.c.). Mechanical allodynia, depressive, and anxious-like behavior were assessed by electronic Von Frey, forced swimming, and elevated plus-maze tests, respectively. Locomotor activity was assessed by the open field test. Blood glycated hemoglobin (HbA1) and the levels of lipid peroxidation (LPO) and reduced glutathione (GSH) were evaluated on the hippocampus, pre-frontal cortex, lumbar spinal cord, and sciatic nerve. Diabetic animals developed mechanical allodynia, depressive and anxious-like behavior, increased plasma HbA1, increased LPO, and decreased GSH levels in tissues analyzed. Repeated BIX-treatment (at all tested doses) significantly attenuated mechanical allodynia, the depressive (30 and 90 mg/kg) and, anxious-like behaviors (all doses) in diabetic rats, without changing the locomotor performance. BIX (at all tested doses) restored the oxidative parameters in tissues analyzed and reduced the plasma HbA1. Thereby, bixin may represent an alternative for the treatment of comorbidities associated with diabetes, counteracting oxidative stress and plasma HbA1.
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Affiliation(s)
- Alexia Thamara Gasparin
- Laboratory of Pharmacology of Pain, Department of Pharmacology, Federal University of Paraná, 81531-170 Curitiba, PR, Brazil
| | - Evelize Stacoviaki Rosa
- Laboratory of Pharmacology of Pain, Department of Pharmacology, Federal University of Paraná, 81531-170 Curitiba, PR, Brazil
| | - Carlos Henrique Alves Jesus
- Laboratory of Pharmacology of Pain, Department of Pharmacology, Federal University of Paraná, 81531-170 Curitiba, PR, Brazil
| | - Izonete Cristina Guiloski
- Laboratory of Toxicology, Department of Pharmacology, Federal University of Paraná, 81531-170 Curitiba, PR, Brazil
| | | | - Olair Carlos Beltrame
- Laboratory of Veterinary Clinical Pathology, Department of Veterinary Medicine, Federal University of Paraná, 80035-050 Curitiba, PR, Brazil
| | - Rosângela Locatelli Dittrich
- Laboratory of Veterinary Clinical Pathology, Department of Veterinary Medicine, Federal University of Paraná, 80035-050 Curitiba, PR, Brazil
| | | | - Janaina Menezes Zanoveli
- Laboratory of Pharmacology of Pain, Department of Pharmacology, Federal University of Paraná, 81531-170 Curitiba, PR, Brazil
| | - Joice Maria da Cunha
- Laboratory of Pharmacology of Pain, Department of Pharmacology, Federal University of Paraná, 81531-170 Curitiba, PR, Brazil.
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22
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Maciak K, Dziedzic A, Miller E, Saluk-Bijak J. miR-155 as an Important Regulator of Multiple Sclerosis Pathogenesis. A Review. Int J Mol Sci 2021; 22:ijms22094332. [PMID: 33919306 PMCID: PMC8122504 DOI: 10.3390/ijms22094332] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/05/2021] [Accepted: 04/17/2021] [Indexed: 02/07/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic, immune-mediated disease and the leading cause of disability among young adults. MicroRNAs (miRNAs) are involved in the post-transcriptional regulation of gene expression. Of them, miR-155 is a crucial regulator of inflammation and plays a role in modulating the autoimmune response in MS. miR-155 is involved in blood–brain barrier (BBB) disruption via down-regulation of key junctional proteins under inflammatory conditions. It drives demyelination processes by contributing to, e.g., microglial activation, polarization of astrocytes, and down-regulation of CD47 protein and affecting crucial transcription factors. miR-155 has a huge impact on the development of neuropathic pain and indirectly influences a regulatory T (Treg) cell differentiation involved in the alleviation of pain hypersensitivity. This review also focused on neuropsychiatric symptoms appearing as a result of disease-associated stressors, brain atrophy, and pro-inflammatory factors. Recent studies revealed the role of miR-155 in regulating anxiety, stress, inflammation in the hippocampus, and treatment-resistant depression. Inhibition of miR-155 expression was demonstrated to be effective in preventing processes involved in the pathophysiology of MS. This review aimed to support the better understanding the great role of miR-155 dysregulation in various aspects of MS pathophysiology and highlight future perspectives for this molecule.
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Affiliation(s)
- Karina Maciak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (J.S.-B.)
| | - Angela Dziedzic
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (J.S.-B.)
- Correspondence:
| | - Elzbieta Miller
- Department of Neurological Rehabilitation, Medical University of Lodz, Milionowa 14, 93-113 Lodz, Poland;
| | - Joanna Saluk-Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (J.S.-B.)
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23
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Fakhri S, Abbaszadeh F, Jorjani M. On the therapeutic targets and pharmacological treatments for pain relief following spinal cord injury: A mechanistic review. Biomed Pharmacother 2021; 139:111563. [PMID: 33873146 DOI: 10.1016/j.biopha.2021.111563] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 12/11/2022] Open
Abstract
Spinal cord injury (SCI) is globally considered as one of the most debilitating disorders, which interferes with daily activities and life of the affected patients. Despite many developments in related recognizing and treating procedures, post-SCI neuropathic pain (NP) is still a clinical challenge for clinicians with no distinct treatments. Accordingly, a comprehensive search was conducted in PubMed, Medline, Scopus, Web of Science, and national database (SID and Irandoc). The relevant articles regarding signaling pathways, therapeutic targets and pharmacotherapy of post-SCI pain were also reviewed. Data were collected with no time limitation until November 2020. The present study provides the findings on molecular mechanisms and therapeutic targets, as well as developing the critical signaling pathways to introduce novel neuroprotective treatments of post-SCI pain. From the pathophysiological mechanistic point of view, post-SCI inflammation activates the innate immune system, in which the immune cells elicit secondary injuries. So, targeting the critical signaling pathways for pain management in the SCI population has significant importance in providing new treatments. Indeed, several receptors, ion channels, excitatory neurotransmitters, enzymes, and key signaling pathways could be used as therapeutic targets, with a pivotal role of n-methyl-D-aspartate, gamma-aminobutyric acid, and inflammatory mediators. The current review focuses on conventional therapies, as well as crucial signaling pathways and promising therapeutic targets for post-SCI pain to provide new insights into the clinical treatment of post-SCI pain. The need to develop innovative delivery systems to treat SCI is also considered.
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Affiliation(s)
- Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Fatemeh Abbaszadeh
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Masoumeh Jorjani
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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24
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Dexmedetomidine alleviated neuropathic pain in dorsal root ganglion neurons by inhibition of anaerobic glycolysis activity and enhancement of ROS tolerance. Biosci Rep 2021; 40:222638. [PMID: 32285913 PMCID: PMC7201561 DOI: 10.1042/bsr20191994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 02/23/2020] [Accepted: 04/08/2020] [Indexed: 01/29/2023] Open
Abstract
Neuropathic pain is a kind of chronic pain that is triggered or caused primarily by damage to the nervous system and neurological dysfunction. It’s known that dexmedetomidine is a new type of highly selective alpha2-adrenoceptor agonist with sedation, anti-anxiety, analgesic and other effects. However, the function and mechanism of dexmedetomidine on neuropathic pain are not clear. Rat DRG neurons were isolated and identified using immunofluorescence assay. Following treatment with H2O2, dexmedetomidine or ROS inhibitor (NAC), the apoptosis and ROS levels were examined by flow cytometery; apoptosis- and anaerobic glycolysis-related proteins were determined by Western blot assay; glucose consumption, pyruvic acid, lactic acid and ATP/ADP ratios were also measured. The results revealed that dexmedetomidine inhibited H2O2-induced apoptosis and reactive oxygen species (ROS) in rat DRG neurons and in addition, dexmedetomidine down-regulated the expression levels of anaerobic glycolysis-related proteins, significantly reduced glucose, pyruvic acid and lactic acid levels. It also increased the ATP/ADP ratio in H2O2-treated rat dorsal root ganglion (DRG) neurons. Moreover, we also demonstrated that ROS inhibitor (NAC) also inhibited H2O2-induced apoptosis and anaerobic glycolysis in rat DRG neurons. In conclusion, dexmedetomidine suppressed H2O2-induced apoptosis and anaerobic glycolysis activity by inhibiting ROS, in rat DRG neurons. Therefore, dexmedetomidine might play a pivotal role in neuropathic pain by the inhibition of ROS.
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25
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Xu BY, Sun J, Chen SP, Wang XM, Chen N, Li DY, Chen G, Mei W, Tian YK, Zhou YQ, Ye DW. Nox2 contributes to reactive oxygen species-induced redox imbalance in cancer-induced bone pain. Am J Transl Res 2021; 13:1269-1279. [PMID: 33841655 PMCID: PMC8014423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 07/21/2020] [Indexed: 06/12/2023]
Abstract
We have recently demonstrated that reactive oxygen species (ROS) scavengers ameliorate mechanical allodynia in a rat model of cancer-induced bone pain (CIBP). In the present study, we investigated anti-nociceptive effect of Nox inhibitor apocynin in CIBP in rats. Mechanical allodynia was assessed by Von Frey tests in sham and CIBP group of rats. Western blotting and immunofluorescence technique were conducted to assess the expression levels and cellular localization of Nox2. Results illustrated that after intra-tibial implantation with tumor cells, Nox2 and ROS were both up-regulated in the spinal cord of rats. Injection of apocynin could dose-dependently decrease the abundance of Nox2 and inhibit the development of CIBP. Furthermore, pretreatment with the apocynin could delay the development of CIBP. This study for the first time proved that Nox2 inhibitors could downregulate the production of ROS in CIBP rats, which highlights the fact that Nox inhibitor is an important therapeutic option for CIBP and that, precise targeting inhibitor of different subtypes of Nox enzymes is needed to developed in future.
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Affiliation(s)
- Bing-Yang Xu
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Key Laboratory of Organ Transplantation, Ministry of EducationWuhan 430030, China
- NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan 430030, China
| | - Jia Sun
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Shu-Ping Chen
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Xiao-Mei Wang
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Nan Chen
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Dan-Yang Li
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Gang Chen
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Key Laboratory of Organ Transplantation, Ministry of EducationWuhan 430030, China
- NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan 430030, China
| | - Wei Mei
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Yu-Ke Tian
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Ya-Qun Zhou
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Da-Wei Ye
- Cancer Center, Shanxi Bethune Hospital, Shanxi Medical University, Shanxi Academy of Medical SciencesTaiyuan 030032, China
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26
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Lee BH, Kang J, Kim HY, Gwak YS. The Roles of Superoxide on At-Level Spinal Cord Injury Pain in Rats. Int J Mol Sci 2021; 22:ijms22052672. [PMID: 33800907 PMCID: PMC7961837 DOI: 10.3390/ijms22052672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 01/05/2023] Open
Abstract
Background: In the present study, we examined superoxide-mediated excitatory nociceptive transmission on at-level neuropathic pain following spinal thoracic 10 contusion injury (SCI) in male Sprague Dawley rats. Methods: Mechanical sensitivity at body trunk, neuronal firing activity, and expression of superoxide marker/ionotropic glutamate receptors (iGluRs)/CamKII were measured in the T7/8 dorsal horn, respectively. Results: Topical treatment of superoxide donor t-BOOH (0.4 mg/kg) increased neuronal firing rates and pCamKII expression in the naïve group, whereas superoxide scavenger Tempol (1 mg/kg) and non-specific ROS scavenger PBN (3 mg/kg) decreased firing rates in the SCI group (* p < 0.05). SCI showed increases of iGluRs-mediated neuronal firing rates and pCamKII expression (* p < 0.05); however, t-BOOH treatment did not show significant changes in the naïve group. The mechanical sensitivity at the body trunk in the SCI group (6.2 ± 0.5) was attenuated by CamKII inhibitor KN-93 (50 μg, 3.9 ± 0.4) or Tempol (1 mg, 4 ± 0.4) treatment (* p < 0.05). In addition, the level of superoxide marker Dhet showed significant increase in SCI rats compared to the sham group (11.7 ± 1.7 vs. 6.6 ± 1.5, * p < 0.05). Conclusions: Superoxide and the pCamKII pathway contribute to chronic at-level neuropathic pain without involvement of iGluRs following SCI.
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Affiliation(s)
- Bong Hyo Lee
- Department of Acupuncture, Moxibustion and Acupoint, College of Korean Medicine, Daegu Haany University, Daegu 42158, Korea;
- Research Center for Herbal Convergence on Liver Disease, Daegu Haany University, Daegu 42158, Korea;
| | - Jonghoon Kang
- Department of Biology, Valdosta State University, Valdosta, GA 31698, USA;
| | - Hee Young Kim
- Research Center for Herbal Convergence on Liver Disease, Daegu Haany University, Daegu 42158, Korea;
- Department of Physiology, College of Korean Medicine, Daegu Haany University, Daegu 42158, Korea
| | - Young S. Gwak
- Department of Physiology, College of Korean Medicine, Daegu Haany University, Daegu 42158, Korea
- Correspondence: ; Tel.: +82-949-824-7222
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27
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Qiu Y, Zhao Z, Chen Q, Zhang B, Yang C. MiR-495 regulates cell proliferation and apoptosis in H 2O 2 stimulated rat spinal cord neurons through targeting signal transducer and activator of transcription 3 (STAT3). ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:461. [PMID: 33850858 PMCID: PMC8039649 DOI: 10.21037/atm-21-102] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background MicroRNA-495 (miR-495) is a post-translational modulator that performs several functions, and it is involved in several disease states. On the other hand, the physiological functions of miR-495 in H2O2 stimulated mouse spinal cord neuronal dysfunction have not yet been fully understood. Methods In this study, we speculated that miR-495 may regulate the expression of STAT3 in the processes of neuronal proliferation and apoptosis following spinal cord injury (SCI). Cell viability was assessed with methyl thiazolyl tetrazolium (MTT) assay. Caspase-3 activity was assayed with ELISA. Cellular apoptotic changes were measured with TUNEL assay. Intracellular ROS production was determined by measuring uptake of dichlorodihydrofluorescein diacetate (DCFH-DA; PCR was used to assay the mRNA expression of STAT3 gene bearing predicted targeting positions for miR-495, while qRT-PCR was used to measure miR-495 mRNA. Results The results demonstrated that treatment of SCNs with H2O2 led to a significant decrease in cell survival, while it enhanced apoptosis. The H2O2 treatment induced cell membrane dysfunction, and increased ROS levels and DNA damage. Interestingly, the expression of miR-495 was markedly suppressed when SCNs were exposed to H2O2. However, miR-495 overexpression reversed H2O2-induced cytotoxicity and apoptosis in SCNs. Moreover, H2O2 exposure elevated protein and mRNA concentrations of STAT3 in SCNs. Bioinformatics analysis showed likely binding domains of miR-495 in the 3'-untranslated regions of STAT3 in SCNs. MiR-495 loss-of-function and gain-of-function significantly up-regulated and down-regulated both STAT3 mRNA and protein expressions, respectively, in SCNs. Conclusions miR-495 overexpression inhibited H2O2-induced SCN dysfunction. This mechanism was mediated through the down-regulation of STAT3 expression.
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Affiliation(s)
- Yunfeng Qiu
- Department of Orthopedic, Luhe Hospital Affiliated of Yangzhou University Medical College, Nanjing, China
| | - Ziru Zhao
- Department of Orthopedics, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qi Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bin Zhang
- Department of Orthopedics, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chuanjun Yang
- Department of Orthopedics, Anting Hospital, Shanghai, China
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28
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Li J, Du R, Bian Q, Zhang D, Gao S, Yuan A, Ying X, Shen Y, Gao J. Topical application of HA-g-TEMPO accelerates the acute wound healing via reducing reactive oxygen species (ROS) and promoting angiogenesis. Int J Pharm 2021; 597:120328. [PMID: 33540013 DOI: 10.1016/j.ijpharm.2021.120328] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/16/2020] [Accepted: 01/27/2021] [Indexed: 02/07/2023]
Abstract
During the occurring of cutaneous trauma, increasing oxidative stress response in wound site retards the progress of proliferation phase, impeding sequent efficient wound repair. At the same time, high-quality healing also requires adequate new blood vessels in order to furnish the wound site with a nutrient and oxygen-sufficient environment. Here we synthesized a novel hyaluronic acid (HA) material modified with a peroxidation inhibitor 2,2,6,6-tetramethylpiperidinyloxy (ATEMPO) for prevention of excessive reactive oxygen species (ROS) and promotion of angiogenesis after full-thickness skin excision in rats. Amines in ATEMPO attaching with carbonyls in HA chains was fabricated through N-acylation. The HA-g-TEMPO exerted a ROS-scavenging and angiogenesis-promoting function in vitro. In acute wound rat model, the wound closure efficacy was significantly improved to almost 55% at day 6 in comparison to 49% of HA, and wound sites in initial wound phase was also narrowed down sharply. Moreover, initially formed blood vessels were found in wound sites, further proved the angiogenesis-promoting function of HA-g-TEMPO. More interestingly, wound sites demonstrated an exciting regenerative healing effect which was characterized by marked skin appendages as well as reduced scarring. Therefore, this strategy showed a promising future that could be considered as a reliable and effective method to cutaneous wound healing.
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Affiliation(s)
- Junjun Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Rong Du
- Zhejiang Key Laboratory of Smart Biomaterials, Zhejiang University, Hangzhou 310027, PR China
| | - Qiong Bian
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Danping Zhang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Siqian Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Anran Yuan
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Xiaoying Ying
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Youqing Shen
- Zhejiang Key Laboratory of Smart Biomaterials, Zhejiang University, Hangzhou 310027, PR China.
| | - Jianqing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China; Jiangsu Engineering Research Center for New-Type External and Transdermal Preparations, PR China.
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29
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Long H, Zheng H, Ai L, Osman K, Liu Z. Down-Regulation of NOX4 Expression in Dorsal Horn of Spinal Cord Could Alleviate Cancer-Induced Bone Pain in Rats by Reducing Oxidative Stress Response. Cancer Manag Res 2020; 12:10929-10938. [PMID: 33154672 PMCID: PMC7608490 DOI: 10.2147/cmar.s263177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/02/2020] [Indexed: 01/06/2023] Open
Abstract
Introduction Cancer-induced bone pain (CIBP) is very common in patients with advanced cancer. Recent studies have shown that reactive oxygen species (ROS) can sense and regulate pain response process through spinal cord mechanism, and play a role in CIBP. NADPH oxidase (NOX) is a group of protease complexes that produce ROS. In the current study, we investigated the expression of NOX4 in the spinal dorsal horn of rats with CIBP and its related role and molecular mechanism. Materials and Methods A rat CIBP model was established by injecting Walker-256 cells into the tibia medullary cavity, and the expression of NOX4 in spinal dorsal horn was down-regulated by injecting lentivirus into spinal cord. RT-PCR, Western blot and immunofluorescence staining were used to detect the expression of NOX4 in CIBP rats, cell localization and its effect on CIBP rats, and the effect of down-regulating the expression of NOX4 on the expression of H2O2, nitric oxide synthase nNO, antioxidant enzyme SOD, and the activity of neuro-receptor in spinal dorsal horn of rats. Results In rats with CIBP, the expression of NOX4 was significantly increased, and immunofluorescence showed that NOX4 was mainly expressed in microglia in the dorsal horn of spinal cord. Down-regulating the expression of NOX4 in rats can reduce the level of H2O2 and nNO in dorsal horn tissue, and increase the expression of SOD to reduce the oxidative stress response. At the same time, down-regulating NOX4 can reduce the sensitivity of spinal cord and relieve the pain of bone cancer by inhibiting the expression of NMDAR and GABAA-γ2 in dorsal horn tissue. Conclusion NOX4 is a promising therapeutic target in CIBP, and down-regulation of NOX4 expression can alleviate CIBP in rats by reducing oxidative stress and weakening spinal cord sensitization.
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Affiliation(s)
- Hao Long
- Department of Pain Management, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, People's Republic of China
| | - Hui Zheng
- Orthopedics Department, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, People's Republic of China
| | - Long Ai
- Department of Pain Management, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, People's Republic of China
| | - Kamil Osman
- Department of Pain Management, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, People's Republic of China
| | - Zhigang Liu
- Department of Pain Management, The Second Hospital of Jilin University, Changchun, Jilin, People's Republic of China
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Zhang Y, Li L, Mu J, Chen J, Feng S, Gao J. Implantation of a functional TEMPO-hydrogel induces recovery from rat spinal cord transection through promoting nerve regeneration and protecting bladder tissue. Biomater Sci 2020; 8:1695-1701. [PMID: 31989134 DOI: 10.1039/c9bm01530b] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Spinal cord injury is one of the most serious traumatic diseases. The current available clinical therapies are unable to provide effective recovery of nerve functions. Implantation of biomaterial scaffolds is a promising approach to bridge the damaged nerve tissue in the absence of the extracellular matrix. However, the treatments have been impaired by the increased generation of reactive oxygen species in the microenvironment of acute spinal cord injury. Efficient delivery of antioxidants and biocompatible materials and reagents has been a challenge. Herein, a novel hyaluronic acid (HA) hydrogel functionalized with the antioxidant compound 2,2,6,6-tetramethylpiperidinyloxy (TEMPO) is fabricated for nerve tissue regeneration after serious spinal cord transection in rats. TEMPO is tethered onto HA chains to form HA-TEMPO through a Schiff base reaction between 4-amino-TEMPO and aldehyde modified HA chains. The TEMPO-hydrogel is constructed with a highly porous three-dimensional structure via the gelation between the residue aldehydes in HA-TEMPO and the amines in adipic dihydrazide modified HA. The functional TEMPO-hydrogel exhibits the antioxidant effect in an H2O2 simulated in vitro peroxidative microenvironment. Implantation of the functional hydrogel in vivo induces a significant motor function restoration, which could be attributed to the effective functions of the TEMPO-hydrogel in tissue reconnection as well as nerve fiber regeneration of the central nervous spinal cord tissue. Importantly, the treatment with the TEMPO-hydrogel effectively protects the bladder tissue from neurogenic damage. Therefore, the functional TEMPO-hydrogel provides a promising strategy for the treatment of central nervous system diseases through the antioxidant and lesion-bridging regulation of the pathological microenvironment.
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Affiliation(s)
- Yu Zhang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China.
| | - Liming Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China. and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Jiafu Mu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China.
| | - Jiachen Chen
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China.
| | - Shiqing Feng
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China and Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, People's Republic of China
| | - Jianqing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China. and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, People's Republic of China
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Sham surgeries for central and peripheral neural injuries persistently enhance pain-avoidance behavior as revealed by an operant conflict test. Pain 2020; 160:2440-2455. [PMID: 31323014 DOI: 10.1097/j.pain.0000000000001642] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Studies using rodent models of neuropathic pain use sham surgery control procedures that cause deep tissue damage. Sham surgeries would thus be expected to induce potentially long-lasting postsurgical pain, but little evidence for such pain has been reported. Operant tests of voluntary behavior can reveal negative motivational and cognitive aspects of pain that may provide sensitive tools for detecting pain-related alterations. In a previously described operant mechanical conflict test involving lengthy familiarization and training, rodents freely choose to either escape from a brightly lit chamber by crossing sharp probes or refuse to cross. Here, we describe a brief (2-day) mechanical conflict protocol that exploits rats' innate exploratory response to a novel environment to detect persistently enhanced pain-avoidance behavior after sham surgeries for 2 neural injury models: thoracic spinal cord injury and chronic constriction injury of the sciatic nerve. Pitting the combined motivations to avoid the bright light and to explore the novel device against pain from crossing noxious probes disclosed a conflicting, hyperalgesia-related reluctance to repeatedly cross the probes after injury. Rats receiving standard sham surgeries demonstrated enhanced pain-like avoidance behavior compared with naive controls, and this behavior was similar to that of corresponding chronic constriction injury or spinal cord injury rats weeks or months after injury. In the case of sham surgery for spinal cord injury, video analysis of voluntary exploratory behavior directed at the probes revealed enhanced forepaw withdrawal responses. These findings have important implications for preclinical investigations into behavioral alterations and physiological mechanisms associated with postsurgical and neuropathic pain.
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Sex Difference in Trigeminal Neuropathic Pain Response to Exercise: Role of Oxidative Stress. Pain Res Manag 2020; 2020:3939757. [PMID: 32676135 PMCID: PMC7341438 DOI: 10.1155/2020/3939757] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/17/2020] [Accepted: 06/08/2020] [Indexed: 11/17/2022]
Abstract
Aim Orofacial chronic neuropathic pain commonly occurs following trigeminal nerve injuries. We investigated whether swimming exercise can reduce trigeminal neuropathic pain through improving antioxidant capacity. Materials and Methods Twenty-eight Wistar rats of either sex and 180–220 grams were divided into 4 groups as sham, neuropathy, neuropathy + single bout exercise, and neuropathy + 2 weeks of exercise. Trigeminal neuropathy was carried out through chronic constriction injury (CCI) of infraorbital nerve. Protocols of exercise were included a single bout session (45 minutes) and a 2-week (45 minutes/day/6 days a week) swimming exercise. Mechanical allodynia was detected using Von Frey filaments. The activity of the serum antioxidant enzymes glutathione peroxidase and superoxides dismutase was assayed using ELISA kits. Results We found that CCI significantly reduced facial pain threshold in both sexes (P < 0.05). Both swimming exercise protocols significantly reduced mechanical allodynia in female rats compared to the sham group; however, only 2 weeks of exercise were significantly effective in male rats. The activity of antioxidant enzyme glutathione peroxidase significantly (P < 0.05) decreased following CCI in female rats against that in the sham group and 2-week exercise significantly (P < 0.05) increased it toward the control level. The levels of glutathione peroxidase in male rats and superoxidase dismutase in both sexes were not significantly different compared to their sham groups. Conclusion Swimming exercise alleviates trigeminal neuropathic pain in both sexes. Oxidative stress as a possible mechanism was involved in the effect of exercise on female rat trigeminal neuropathy.
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Abbaszadeh F, Fakhri S, Khan H. Targeting apoptosis and autophagy following spinal cord injury: Therapeutic approaches to polyphenols and candidate phytochemicals. Pharmacol Res 2020; 160:105069. [PMID: 32652198 DOI: 10.1016/j.phrs.2020.105069] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/28/2020] [Accepted: 07/03/2020] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) is a neurological disorder associated with the loss of sensory and motor function. Understanding the precise dysregulated signaling pathways, especially apoptosis and autophagy following SCI, is of vital importance in developing innovative therapeutic targets and treatments. The present study lies in the fact that it reveals the precise dysregulated signaling mediators of apoptotic and autophagic pathways following SCI and also examines the effects of polyphenols and other candidate phytochemicals. It provides new insights to develop new treatments for post-SCI complications. Accordingly, a comprehensive review was conducted using electronic databases including, Scopus, Web of Science, PubMed, and Medline, along with the authors' expertise in apoptosis and autophagy as well as their knowledge about the effects of polyphenols and other phytochemicals on SCI pathogenesis. The primary mechanical injury to spinal cord is followed by a secondary cascade of apoptosis and autophagy that play critical roles during SCI. In terms of pharmacological mechanisms, caspases, Bax/Bcl-2, TNF-α, and JAK/STAT in apoptosis along with LC3 and Beclin-1 in autophagy have shown a close interconnection with the inflammatory pathways mainly glutamatergic, PI3K/Akt/mTOR, ERK/MAPK, and other cross-linked mediators. Besides, apoptotic pathways have been shown to regulate autophagy mediators and vice versa. Prevailing evidence has highlighted the importance of modulating these signaling mediators/pathways by polyphenols and other candidate phytochemicals post-SCI. The present review provides dysregulated signaling mediators and therapeutic targets of apoptotic and autophagic pathways following SCI, focusing on the modulatory effects of polyphenols and other potential phytochemical candidates.
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Affiliation(s)
- Fatemeh Abbaszadeh
- Department of Neuroscience, Faculty of Advanced Technologies in Medical Sciences, Iran University of Medical Sciences, Tehran, Iran; Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran.
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, 23200, Pakistan.
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Asiri MMH, Engelsman S, Eijkelkamp N, Höppener JWM. Amyloid Proteins and Peripheral Neuropathy. Cells 2020; 9:E1553. [PMID: 32604774 PMCID: PMC7349787 DOI: 10.3390/cells9061553] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 12/14/2022] Open
Abstract
Painful peripheral neuropathy affects millions of people worldwide. Peripheral neuropathy develops in patients with various diseases, including rare familial or acquired amyloid polyneuropathies, as well as some common diseases, including type 2 diabetes mellitus and several chronic inflammatory diseases. Intriguingly, these diseases share a histopathological feature-deposits of amyloid-forming proteins in tissues. Amyloid-forming proteins may cause tissue dysregulation and damage, including damage to nerves, and may be a common cause of neuropathy in these, and potentially other, diseases. Here, we will discuss how amyloid proteins contribute to peripheral neuropathy by reviewing the current understanding of pathogenic mechanisms in known inherited and acquired (usually rare) amyloid neuropathies. In addition, we will discuss the potential role of amyloid proteins in peripheral neuropathy in some common diseases, which are not (yet) considered as amyloid neuropathies. We conclude that there are many similarities in the molecular and cell biological defects caused by aggregation of the various amyloid proteins in these different diseases and propose a common pathogenic pathway for "peripheral amyloid neuropathies".
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Affiliation(s)
- Mohammed M. H. Asiri
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 EA Utrecht, The Netherlands; (M.M.H.A.); (S.E.); (J.W.M.H.)
- The National Centre for Genomic Technology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology, P.O. Box 6086, 11461 Riyadh, Saudi Arabia
| | - Sjoukje Engelsman
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 EA Utrecht, The Netherlands; (M.M.H.A.); (S.E.); (J.W.M.H.)
| | - Niels Eijkelkamp
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 EA Utrecht, The Netherlands; (M.M.H.A.); (S.E.); (J.W.M.H.)
| | - Jo W. M. Höppener
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, 3584 EA Utrecht, The Netherlands; (M.M.H.A.); (S.E.); (J.W.M.H.)
- Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, 3584 EA Utrecht, The Netherlands
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Munoz FM, Patel PA, Gao X, Mei Y, Xia J, Gilels S, Hu H. Reactive oxygen species play a role in P2X7 receptor-mediated IL-6 production in spinal astrocytes. Purinergic Signal 2020; 16:97-107. [PMID: 32146607 DOI: 10.1007/s11302-020-09691-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 02/11/2020] [Indexed: 01/29/2023] Open
Abstract
Astrocytes mediate a remarkable variety of cellular functions, including gliotransmitter release. Under pathological conditions, high concentrations of the purinergic receptor agonist adenosine triphosphate (ATP) are released into the extracellular space leading to the activation of the purinergic P2X7 receptor, which in turn can initiate signaling cascades. It is well-established that reactive oxygen species (ROS) increase in macrophages and microglia following P2X7 receptor activation. However, direct evidence that activation of P2X7 receptor leads to ROS production in astrocytes is lacking to date. While it is known that P2X7R activation induces cytokine production, the mechanism involved in this process is unclear. In the present study, we demonstrated that P2X7 receptor activation induced ROS production in spinal astrocytes in a concentration-dependent manner. We also found that P2X7R-mediated ROS production is at least partially through NADPH oxidase. In addition, our ELISA data show that P2X7R-induced IL-6 release was dependent on NADPH oxidase-mediated production of ROS. Collectively, these results reveal that activation of the P2X7 receptor on spinal astrocytes increases ROS production through NADPH oxidase, subsequently leading to IL-6 release. Our results reveal a role of ROS in the P2X7 signaling pathway in mouse spinal cord astrocytes and may indicate a potential mechanism for the astrocytic P2X7 receptor in chronic pain.
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Affiliation(s)
- Frances M Munoz
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Priya A Patel
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Xinghua Gao
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Yixiao Mei
- Department of Anesthesiology, Rutgers New Jersey Medical School, 185 S. Orange Ave., Newark, NJ, 07103, USA
| | - Jingsheng Xia
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Sofia Gilels
- Department of Anesthesiology, Rutgers New Jersey Medical School, 185 S. Orange Ave., Newark, NJ, 07103, USA
| | - Huijuan Hu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA. .,Department of Anesthesiology, Rutgers New Jersey Medical School, 185 S. Orange Ave., Newark, NJ, 07103, USA.
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Hsieh CT, Lee YJ, Lee JW, Lu S, Tucci MA, Dai X, Ojeda NB, Lee HJ, Fan LW, Tien LT. Interleukin-1 receptor antagonist ameliorates the pain hypersensitivity, spinal inflammation and oxidative stress induced by systemic lipopolysaccharide in neonatal rats. Neurochem Int 2020; 135:104686. [PMID: 31987865 DOI: 10.1016/j.neuint.2020.104686] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 01/05/2020] [Accepted: 01/13/2020] [Indexed: 02/07/2023]
Abstract
Perinatal inflammation-induced reduction in pain threshold may alter pain sensitivity to hyperalgesia or allodynia which may persist into adulthood. In this study, we investigated the anti-inflammatory protective effect of interleukin-1 receptor antagonist (IL-1ra), an anti-inflammatory cytokine, on systemic lipopolysaccharide (LPS)-induced spinal cord inflammation and oxidative stress, thermal hyperalgesia, and mechanical allodynia in neonatal rats. Intraperitoneal (i.p.) injection of LPS (2 mg/kg) or sterile saline was performed in postnatal day 5 (P5) rat pups, and IL-1ra (100 mg/kg) or saline was administered (i.p.) 5 min after LPS injection. Pain reflex behavior, spinal cord inflammation and oxidative stress were examined 24 h after LPS administration. Systemic LPS exposure led to a reduction of tactile threshold in the von Frey filament tests (mechanical allodynia) and pain response latency in the tail-flick test (thermal hyperalgesia) of P6 neonatal rats. Spinal cord inflammation was indicated by the increased numbers of activated glial cells including microglia (Iba1+) and astrocytes (GFAP+), and elevated levels of pro-inflammatory cytokine interleukin-1β (IL-1β), cyclooxygenase-2 (COX-2), and prostaglandin E2 (PGE2) 24 h after LPS treatment. LPS treatment induced spinal oxidative stress as evidenced by the increase in thiobarbituric acid reactive substances (TBARS) content in the spinal cord. LPS exposure also led to a significant increase in oligodendrocyte lineage population (Olig2+) and mature oligodendrocyte cells (APC+) in the neonatal rat spinal cord. IL-1ra treatment significantly reduced LPS-induced effects including hyperalgesia, allodynia, the increased number of activated microglia, astrocytes and oligodendrocytes, and elevated levels of IL-1β, COX-2, PGE2, and lipid peroxidation (TBARS) in the neonatal rat spinal cord. These data suggest that IL-1ra provides a protective effect against the development of pain hypersensitivity, spinal cord inflammation and oxidative stress in the neonatal rats following LPS exposure, which may be associated with the blockade of LPS-induced pro-inflammatory cytokine IL-1β.
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Affiliation(s)
- Cheng-Ta Hsieh
- School of Medicine, Fu Jen Catholic University, New Taipei City, 24205, Taiwan; Division of Neurosurgery, Department of Surgery, Cathay General Hospital, Taipei, 10630, Taiwan; Department of Chemistry, Fu Jen Catholic University, New Taipei City, 24205, Taiwan; Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City, 24205, Taiwan
| | - Yih-Jing Lee
- School of Medicine, Fu Jen Catholic University, New Taipei City, 24205, Taiwan
| | - Jonathan W Lee
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Silu Lu
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS, 39216, USA; Department of Neurology, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Michelle A Tucci
- Department of Anesthesiology, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Xiaoli Dai
- Department of Anesthesiology, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Norma Beatriz Ojeda
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Hyun Joon Lee
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS, 39216, USA; Research Services, G.V. (Sonny) Montgomery Veterans Administration Medical Center, Jackson, MS, 39216, USA
| | - Lir-Wan Fan
- Department of Pediatrics, Division of Newborn Medicine, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Lu-Tai Tien
- School of Medicine, Fu Jen Catholic University, New Taipei City, 24205, Taiwan.
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Bakare AO, Owoyele BV. Antinociceptive and neuroprotective effects of bromelain in chronic constriction injury-induced neuropathic pain in Wistar rats. Korean J Pain 2020; 33:13-22. [PMID: 31888313 PMCID: PMC6944371 DOI: 10.3344/kjp.2020.33.1.13] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/21/2019] [Accepted: 09/22/2019] [Indexed: 02/06/2023] Open
Abstract
Background The continuous search for a novel neuropathic pain drug with few or no side effects has been a main focus of researchers for decades. This study investigated the antinociceptive and neuroprotective effects of bromelain in sciatic nerve ligation-induced neuropathic pain in Wistar rats. Methods Forty-eight Wistar rats randomly divided into eight groups comprised of six animals each were used for this study. Peripheral neuropathy was induced via chronic constriction of the common sciatic nerve. Thermal hyperalgesic and mechanical allodynia were assessed using a hotplate and von Frey filaments, respectively. The functional recovery and structural architecture of the ligated sciatic nerve were evaluated using the sciatic functional index test and a histological examination of the transverse section of the sciatic nerve. The neuroprotective effects of bromelain were investigated in the proximal sciatic nerve tissue after 21 days of treatment. Results Bromelain significantly (P < 0.05) attenuated both the thermal hyperalgesia and mechanical allodynic indices of neuropathic pain. There were improvements in sciatic function and structural integrity in rats treated with bromelain. These rats showed significant (P < 0.05) increases in sciatic nerve nuclear transcription factors (nuclear factor erythroid-derived-2-related factors-1 [NrF-1] and NrF-2), antioxidant enzymes (superoxide dismutase and glutathione), and reduced membrane-lipid peroxidation compared with the ligated control group. Conclusions This study suggest that bromelain mitigated neuropathic pain by enhancing the activities of nuclear transcription factors (NrF-1 and NrF-2) which increases the antioxidant defense system that abolish neuronal stress and structural disorganization.
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Affiliation(s)
- Ahmed Olalekan Bakare
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
| | - Bamidele Victor Owoyele
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
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Kuthati Y, Busa P, Goutham Davuluri VN, Wong CS. Manganese Oxide Nanozymes Ameliorate Mechanical Allodynia in a Rat Model of Partial Sciatic Nerve-Transection Induced Neuropathic Pain. Int J Nanomedicine 2019; 14:10105-10117. [PMID: 31920306 PMCID: PMC6938959 DOI: 10.2147/ijn.s225594] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 12/16/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Reactive oxygen species (ROS) induced oxidative stress is linked to numerous neurological diseases, including neuropathic pain. Natural ROS scavenging enzymes like superoxide dismutase (SOD) and catalase have been found to be efficient in alleviating neuropathic pain. However, their sensitivity towards extreme pH and a short half-life limit their efficacy in vivo. Manganese oxide nanoparticles (MONPs) are recently known to possess ROS scavenging properties. In this study, MONPs were examined for their therapeutic effect on neuropathic pain. METHODS The MONPs were synthesized by a hydrothermal method. The synthesized MONPs were characterized by UV/Vis, TEM, SEM, FTIR, NTA and XRD. The biocompatibility of the nanoparticles is evaluated in neural cells using LDH assay. MONPs were evaluated for their antioxidant activity by DPPH assay. In addition, in vitro ROS scavenging properties were examined in bone marrow-derived macrophage (BMDM) cells using 2',7'-dichlorofluorescin diacetate (DCFDA) assay. To evaluate the in vivo efficacy of nanoparticles, neuropathic pain was induced in Wistar rats by partial sciatic nerve transection (PSNT). On post-transection days 14 to 18, rats were intrathecally injected with MONPs and paw withdrawal threshold was measured. The spinal cords were collected and processed for Western blotting and histological analysis. RESULTS The synthesized MONPs were biocompatible and showed effective antioxidant activity against DPPH free radical scavenging. Further, the nanoparticles scavenged ROS efficiently in vitro in BMDM and their intrathecal administration significantly reduced mechanical allodynia as well as the expression of cyclooxygenase-2 (COX-2), an important mediator of chronic and inflammatory pain in the spinal dorsal horns of PSNT rats. CONCLUSION As ROS play a significant role in neuropathic pain, we expect that MONPs could be a promising tool for the treatment of various inflammatory diseases and might also serve as a potential nanocarrier for the delivery of analgesics.
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Affiliation(s)
- Yaswanth Kuthati
- Department of Anesthesiology, Cathy General Hospital, Taipei, Taiwan
| | - Prabhakar Busa
- Department of Life Sciences, National Dong Hwa University, Hualien, Taiwan
| | | | - Chih Shung Wong
- Department of Anesthesiology, Cathy General Hospital, Taipei, Taiwan
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The endocannabinoid system: Novel targets for treating cancer induced bone pain. Biomed Pharmacother 2019; 120:109504. [PMID: 31627091 DOI: 10.1016/j.biopha.2019.109504] [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: 07/30/2019] [Revised: 09/16/2019] [Accepted: 09/26/2019] [Indexed: 02/08/2023] Open
Abstract
Treating Cancer-induced bone pain (CIBP) continues to be a major clinical challenge and underlying mechanisms of CIBP remain unclear. Recently, emerging body of evidence suggested the endocannabinoid system (ECS) may play essential roles in CIBP. Here, we summarized the current understanding of the antinociceptive mechanisms of endocannabinoids in CIBP and discussed the beneficial effects of endocannabinoid for CIBP treatment. Targeting non-selective cannabinoid 1 receptors or selective cannabinoid 2 receptors, and modulation of peripheral AEA and 2-AG, as well as the inhibition the function of fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL) have produced analgesic effects in animal models of CIBP. Management of ECS therefore appears to be a promising way for the treatment of CIBP in terms of efficacy and safety. Further clinical studies are encouraged to confirm the possible translation to humans of the very promising results already obtained in the preclinical studies.
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Herzberg D, Strobel P, Chihuailaf R, Ramirez-Reveco A, Müller H, Werner M, Bustamante H. Spinal Reactive Oxygen Species and Oxidative Damage Mediate Chronic Pain in Lame Dairy Cows. Animals (Basel) 2019; 9:ani9090693. [PMID: 31533257 PMCID: PMC6770087 DOI: 10.3390/ani9090693] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 09/11/2019] [Accepted: 09/14/2019] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Chronic inflammatory diseases could impact central nervous system homeostasis, being oxidative damage of the dorsal horn, a relevant mechanism mediating central sensitization. Chronic inflammatory lameness in dairy cows is a painful condition that affects animal welfare, affecting dairy production worldwide. This study reveals increased levels of reactive oxygen species, malondialdehyde, and carbonyl groups, indicating lipid and protein damage in the spinal cord of cows with chronic lameness. Moreover, antioxidant system activity was similar between lame and non-lame cows which suggests that antioxidant dysregulation was not the cause of oxidative damage, as has been proposed previously. Based on the fact that nociceptive pathways are strongly conserved between species, there is no reason to neglect that chronic pain in cows promotes Central Nervous System (CNS) alterations, such as oxidative damage. Moreover, lame cows develop central sensitization, as allodynia and hyperalgesia are centrally and not peripherally mediated. Our results support the current assumption that chronic pain is a central nervous system disease and lameness in dairy cows is far beyond an inflammation of the hoof. Abstract Lameness in dairy cows is a worldwide prevalent disease with a negative impact on animal welfare and herd economy. Oxidative damage and antioxidant system dysfunction are common features of many CNS diseases, including chronic pain. The aim of this study was to evaluate the levels of reactive oxygen species (ROS) and oxidative damage markers in the spinal cord of dairy cows with chronic inflammatory lameness. Locomotion score was performed in order to select cows with chronic lameness. Dorsal horn spinal cord samples were obtained post mortem from lumbar segments (L2–L5), and ROS, malondialdehyde (MDA), and carbonyl groups were measured along with the activity of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and total antioxidant response (TAR). Lame cows had increased levels of ROS, MDA, and carbonyl groups, while no differences were observed between lame and non-lame cows in SOD, GPx, CAT, and TAR activity. We conclude that painful chronic inflammatory lameness in dairy cows is associated with an increase in ROS, MDA, and carbonyl groups. Nonetheless, an association between ROS generation and dysfunction of the antioxidant system, as previously proposed, could not be established.
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Affiliation(s)
- Daniel Herzberg
- Graduate School, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile.
| | - Pablo Strobel
- Animal Science Institute, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile.
| | - Ricardo Chihuailaf
- Department of Veterinary Sciences, Universidad Católica de Temuco, Temuco 4780000, Chile.
| | - Alfredo Ramirez-Reveco
- Animal Science Institute, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile.
| | - Heine Müller
- Graduate School, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile.
| | - Marianne Werner
- Animal Science Institute, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile.
| | - Hedie Bustamante
- Veterinary Clinical Sciences Institute, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile.
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Sabirzhanov B, Li Y, Coll-Miro M, Matyas JJ, He J, Kumar A, Ward N, Yu J, Faden AI, Wu J. Inhibition of NOX2 signaling limits pain-related behavior and improves motor function in male mice after spinal cord injury: Participation of IL-10/miR-155 pathways. Brain Behav Immun 2019; 80:73-87. [PMID: 30807841 PMCID: PMC6660361 DOI: 10.1016/j.bbi.2019.02.024] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/11/2019] [Accepted: 02/22/2019] [Indexed: 12/19/2022] Open
Abstract
NADPH oxidase (NOX2) is an enzyme that induces reactive oxygen species (ROS) and serves as a switch between the pro-inflammatory and neurorestorative microglial/macrophage phenotypes; such changes play an important role in neuropathic pain and motor dysfunction. Increased NOX2 expression after spinal cord injury (SCI) has been reported, and inhibition of NOX2 improves motor function. However, the underlying mechanisms of NOX2 in post-traumatic pain and motor deficit remain unexplored. In the present study, we report that depletion of NOX2 (NOX2-/-) or inhibition of NOX2 using NOX2ds-tat significantly reduced mechanical/thermal cutaneous hypersensitivity and motor dysfunction after moderate contusion SCI at T10 in male mice. Western blot (WB, 3 mm lesion area) and immunohistochemistry (IHC) showed that SCI elevates NOX2 expression predominantly in microglia/macrophages up to 8 weeks post-injury. Deletion of NOX2 significantly reduced CD11b+/CD45hiF4/80+ macrophage infiltration at 24 h post-injury detected by flow cytometry and 8-OHG+ ROS production at 8 weeks post-injury by IHC in both lesion area and lumbar enlargement. NOX2 deficiency also altered microglial/macrophage pro-inflammatory and anti-inflammatory balance towards the neurorestorative response. WB analysis showed robust increase of Arginase-1 and YM1 proteins in NOX2-/- mice. Furthermore, qPCR analysis showed significant up-regulation of anti-inflammatory cytokine IL-10 levels in NOX2-/- mice, associated with reduced microRNA-155 expression. These findings were confirmed in CD11b+ microglia/macrophages isolated from spinal cord at 3 days post-injury. Taken together, our data suggest an important role for IL-10/miR-155 pathway in regulating NOX2-mediated SCI-dysfunction. Thus, specific targeting of NOX2 may provide an effective strategy for treating neurological dysfunction in SCI patients.
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Affiliation(s)
- Boris Sabirzhanov
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Yun Li
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Marino Coll-Miro
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Jessica J. Matyas
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Junyun He
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Alok Kumar
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Nicole Ward
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Jingwen Yu
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA
| | - Alan I. Faden
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD, 21201 USA.,Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201 USA,University of Maryland Center to Advance Chronic Pain Research, University of Maryland, Baltimore, MD, 21201 USA
| | - Junfang Wu
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201 USA; Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201 USA; University of Maryland Center to Advance Chronic Pain Research, University of Maryland, Baltimore, MD 21201 USA.
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42
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Oveissi V, Ram M, Bahramsoltani R, Ebrahimi F, Rahimi R, Naseri R, Belwal T, Devkota HP, Abbasabadi Z, Farzaei MH. Medicinal plants and their isolated phytochemicals for the management of chemotherapy-induced neuropathy: therapeutic targets and clinical perspective. Daru 2019; 27:389-406. [PMID: 30852764 PMCID: PMC6593128 DOI: 10.1007/s40199-019-00255-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 02/26/2019] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Chemotherapy, as one of the main approaches of cancer treatment, is accompanied with several adverse effects, including chemotherapy-induced peripheral neuropathy (CIPN). Since current methods to control the condition are not completely effective, new treatment options should be introduced. Medicinal plants can be suitable candidates to be assessed regarding their effects in CIPN. Current paper reviews the available preclinical and clinical studies on the efficacy of herbal medicines in CIPN. METHODS Electronic databases including PubMed, Scopus, and Cochrane library were searched with the keywords "neuropathy" in the title/abstract and "plant", "extract", or "herb" in the whole text. Data were collected from inception until April 2018. RESULTS Plants such as chamomile (Matricaria chamomilla L.), sage (Salvia officinalis L.), cinnamon (Cinnamomum cassia (L.) D. Don), and sweet flag (Acorus calamus L.) as well as phytochemicals like matrine, curcumin, and thioctic acid have demonstrated beneficial effects in animal models of CIPN via prevention of axonal degeneration, decrease in total calcium level, improvement of endogenous antioxidant defense mechanisms such as superoxide dismutase and reduced glutathione, and regulation of neural cell apoptosis, nuclear factor-ĸB, cyclooxygenase-2, and nitric oxide signaling. Also, five clinical trials have evaluated the effect of herbal products in patients with CIPN. CONCLUSIONS There are currently limited clinical evidence on medicinal plants for CIPN which shows the necessity of future mechanistic studies, as well as well-designed clinical trial for further confirmation of the safety and efficacy of herbal medicines in CIPN. Graphical abstract Schematic mechanisms of medicinal plants to prevent chemotherapy-induced neuropathy: NO: nitric oxide, TNF: tumor necrosis factor, PG: prostaglandin, NF-ĸB: nuclear factor kappa B, LPO: lipid peroxidation, ROS: reactive oxygen species, COX: cyclooxygenase, IL: interleukin, ERK: extracellular signal-related kinase, X: inhibition, ↓: induction.
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Affiliation(s)
- Vahideh Oveissi
- Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mahboobe Ram
- Student Research Committee, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Roodabeh Bahramsoltani
- Department of Traditional Pharmacy, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farnaz Ebrahimi
- Pharmacy Students' Research Committee, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Roja Rahimi
- Department of Traditional Pharmacy, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Rozita Naseri
- Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Tarun Belwal
- G. B. Pant National Institute of Himalayan Environment and Sustainable Development, Kosi-Katarmal, Almora, Uttarakhand, 263643, India
| | - Hari Prasad Devkota
- School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo ku, Kumamoto, 862-0973, Japan
- Program for Leading Graduate Schools, Health life science: Interdisciplinary and Glocal Oriented (HIGO) Program, Kumamoto University, 5-1 Oe-honmachi, Chuo ku, Kumamoto, 862-0973, Japan
| | - Zahra Abbasabadi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Naismith E, Pangrazzi L. The impact of oxidative stress, inflammation, and senescence on the maintenance of immunological memory in the bone marrow in old age. Biosci Rep 2019; 39:BSR20190371. [PMID: 31018996 PMCID: PMC6522741 DOI: 10.1042/bsr20190371] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 12/14/2022] Open
Abstract
The bone marrow (BM) provides a preferential survival environment for the long-term maintenance of antigen-experienced adaptive immune cells. After the contact with antigens, effector/memory T cells and plasma cell precursors migrate to the BM, in which they can survive within survival niches in an antigen-independent manner. Despite this, the phenotype of adaptive immune cells changes with aging, and BM niches themselves are affected, leading to impaired long-term maintenance of immunological memory in the elderly as a result. Oxidative stress, age-related inflammation (inflammaging), and cellular senescence appear to play a major role in this process. This review will summarize the age-related changes in T and B cell phenotype, and in the BM niches, discussing the possibility that the accumulation of highly differentiated, senescent-like T cells in the BM during aging may cause inflammation in the BM and promote oxidative stress and senescence. In addition, senescent-like T cells may compete for space with other immune cells within the marrow, partially excluding effector/memory T cells and long-lived plasma cells from the niches.
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Affiliation(s)
- Erin Naismith
- Department of Immunology, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, Innsbruck, Austria
| | - Luca Pangrazzi
- Department of Immunology, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, Innsbruck, Austria
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44
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Yuan H, Hu Y, Jiang L, Wang T. The research progress of miRNA/lncRNA associated with spinal cord injury. IBRAIN 2019. [DOI: 10.1002/j.2769-2795.2019.tb00042.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Hao Yuan
- Department of Spinal SurgeryAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Yue Hu
- Department of Anesthesiology and Institute of Neurological DiseaseTranslational Neuroscience Center, West China Hospital, Sichuan UniversityChengduSichuanChina
| | - Ling Jiang
- Department of Anesthesiology and Institute of Neurological DiseaseTranslational Neuroscience Center, West China Hospital, Sichuan UniversityChengduSichuanChina
| | - Ting‐Hua Wang
- Department of Anesthesiology and Institute of Neurological DiseaseTranslational Neuroscience Center, West China Hospital, Sichuan UniversityChengduSichuanChina
- Institute of Neuroscience, Kunming Medical UniversityKunmingYunnanChina
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45
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Xu L, Liu Y, Sun Y, Li H, Mi W, Jiang Y. Analgesic effects of TLR4/NF-κB signaling pathway inhibition on chronic neuropathic pain in rats following chronic constriction injury of the sciatic nerve. Biomed Pharmacother 2018; 107:526-533. [PMID: 30114636 DOI: 10.1016/j.biopha.2018.07.116] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE Chronic neuropathic pain (CNP) is attributed to a lesion or disease of the somatosensory system, may be derived from the peripheral and central system. Recent study revealed that spinal cord stimulation attenuated CNP by inhibiting TLR4/NF-κB signaling pathway. The present study focuses on the potential analgesic effects of TLR4/NF-κB signaling pathway on CNP in a rat model of chronic constriction injury (CCI). METHODS We successfully established the rat model of CCI by Bennett method, and then inhibited the TLR4/NF-κB signaling pathway in rat models. Next, we measured the mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL) 0D, 2D, 6D, 8D and 12D after operation respectively. MTS510 100 mg/kg, an inhibitor of TLR4, was intrathecal injected into rats after 6D, 8D and 12D after operation. The experiment lasted for 12 days, and then the rats were sacrificed to collect the spinal cord tissues. Protein and mRNA expression levels of toll-like receptor 4 (TLR4), nuclear factor-kappaB (NF-κB), glial cell line-derived neurotrophic factor (GDNF), glial fibrillary acidic protein (GFAP) and nerve growth factor (NGF) were detected by western blot analysis and RT-qPCR, respectively. Immunohistochemistry was performed to detect GDNF, GFAP and NGF expression. RESULTS With the prolongation of MTS510 treatment time, MWT and TWL were increased and finally, the MWT and TWL were close to the baseline level. The levels of TLR4, NF-κB, GDNF, and GFAP as well as NGF increased in rats treated with CCI + Immunoglobulin G1 (IgG1) or CCI + MTS510, suggesting the model establishment was successful. Besides, with the prolongation of MTS510 treatment time, the protein level and mRNA expression of NF-kB, GDNF, GFAP and NGF decreased in rats treated with CCI + IgG1 or CCI + MTS510. Moreover, the GDNF, GFAP and NGF expression in spinal cord tissue in rats treated with CCI + IgG1 or CCI + MTS510 increased obviously, while the GDNF, GFAP and NGF expression decreased in spinal cord tissue in rats treated with CCI + IgG1 or CCI + MTS510 after MTS510 treatment. CONCLUSIONS Collectively, this study defines the role of TLR4 and NF-κB, and inhibition of TLR4/NF-κB signaling pathway might contribute to the alleviation of CNP and improvement of MWT and TWL in a rat model of CCI. Additionally, the results obtained from the study provided a promising basis that could aid as an experimental basis for the potential treatment of TLR4/NF-κB signaling pathway.
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Affiliation(s)
- Longhe Xu
- Department of Anesthesiology, Hainan Branch of Chinese PLA General Hospital, Sanya, 572013, PR China
| | - Yaobo Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, PR China
| | - Yuhui Sun
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, PR China
| | - Hao Li
- Department of Anesthesiology, Hainan Branch of Chinese PLA General Hospital, Sanya, 572013, PR China
| | - Weidong Mi
- Center of Anesthesiology & Operation, Chinese PLA General Hospital, Beijing, 100853, PR China
| | - Yuge Jiang
- Department of Anesthesiology, Hainan Branch of Chinese PLA General Hospital, Sanya, 572013, PR China.
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Wang Y, Zhao Y, Ma X, Li J, Hou J, Lv X. Beneficial Effects of Electroacupuncture on Neuropathic Pain Evoked by Spinal Cord Injury and Involvement of PI3K-mTOR Mechanisms. Biol Res Nurs 2018; 21:5-13. [PMID: 30328377 DOI: 10.1177/1099800418804896] [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] [Indexed: 02/06/2023]
Abstract
The purpose of this study was to examine the beneficial effects of electroacupuncture (EA) on neuropathic pain evoked by spinal cord injury (SCI) and determine the underlying molecular mechanisms of these effects. SCI was induced in rats. Behavioral tests were performed to examine pain responses induced by mechanical and thermal stimulation. Western blot analysis was used to measure the protein expression of phosphorylated mammalian target of rapamycin (p-mTOR), mTOR-mediated phosphorylated ribosomal protein S6 kinase beta-1 (p-S6K1), and phosphorylated eukaryotic translation initiation factor 4E-binding protein 1 (p-4E-BP1) in the superficial dorsal horn of the spinal cord. We showed that SCI increased the expression of p-mTOR, p-S6K1, and p-4E-BP1. The EA intervention attenuated the upregulation of mTOR signaling and alleviated mechanical and thermal pain responses in SCI rats. Blocking spinal mTOR by intrathecal injection of rapamycin also inhibited mechanical and thermal pain. In addition, blocking spinal phosphorylated phosphatidylinositide 3-kinase (p-PI3K) pathway attenuated p-mTOR pathways and mechanical and thermal hyperalgesia in SCI rats. EA also decreased the enhanced p-PI3K in the superficial dorsal horn of SCI rats. In conclusion, findings revealed specific signaling pathways that lead to neuropathic pain in response to SCI, including activation of PI3K-mTOR signaling. Further, results link the beneficial role of EA in alleviating SCI-induced neuropathic pain to its effect on these molecular mechanisms.
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Affiliation(s)
- Yujie Wang
- 1 Department of Pulmonary Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yu Zhao
- 2 Tumor Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Xiaohui Ma
- 2 Tumor Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Jing Li
- 3 Department of Radiology, The First Hospital (Eastern Division) of Jilin University, Changchun, Jilin, China
| | - Junling Hou
- 4 Department of Neurosurgery, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Xiaohong Lv
- 1 Department of Pulmonary Medicine, The First Hospital of Jilin University, Changchun, Jilin, China
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Kim H, Thompson J, Ji G, Ganapathy V, Neugebauer V. Monomethyl fumarate inhibits pain behaviors and amygdala activity in a rat arthritis model. Pain 2018; 158:2376-2385. [PMID: 28832396 DOI: 10.1097/j.pain.0000000000001042] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Neuroplasticity in the amygdala, a brain center for emotions, leads to increased neuronal activity and output that can generate emotional-affective behaviors and modulate nocifensive responses. Mechanisms of increased activity in the amygdala output region (central nucleus, CeA) include increased reactive oxygen species, and so we explored beneficial effects of monomethyl fumarate (MMF), which can have neuroprotective effects through the nuclear factor (erythroid-derived 2)-like 2 (Nrf2) antioxidant response pathway. Systemic (intraperitoneal) MMF dose-dependently inhibited vocalizations and mechanosensitivity (hindlimb withdrawal reflexes) of rats in an arthritis pain model (kaolin-carrageenan-induced monoarthritis in the knee). Stereotaxic administration of MMF into the CeA by microdialysis also inhibited vocalizations but had a limited effect on mechanosensitivity, suggesting a differential contribution to emotional-affective vs sensory pain aspects. Extracellular single-unit recordings of CeA neurons in anesthetized rats showed that stereotaxic administration of MMF into the CeA by microdialysis inhibited background activity and responses of CeA neurons to knee joint stimulation in the arthritis pain model. Monomethyl fumarate had no effect on behaviors and neuronal activity under normal conditions. The results suggest that MMF can inhibit emotional-affective responses in an arthritis pain model through an action that involves the amygdala (CeA).
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Affiliation(s)
- Hyunyoung Kim
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center (TTUHSC), School of Medicine, Lubbock, TX, USA
| | - Jeremy Thompson
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center (TTUHSC), School of Medicine, Lubbock, TX, USA
| | - Guangchen Ji
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center (TTUHSC), School of Medicine, Lubbock, TX, USA
| | - Vadivel Ganapathy
- Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center (TTUHSC), Lubbock, TX, USA.,Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center (TTUHSC), Lubbock, TX, USA
| | - Volker Neugebauer
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center (TTUHSC), School of Medicine, Lubbock, TX, USA.,Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center (TTUHSC), Lubbock, TX, USA
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Tashiro S, Nishimura S, Shinozaki M, Takano M, Konomi T, Tsuji O, Nagoshi N, Toyama Y, Liu M, Okano H, Nakamura M. The Amelioration of Pain-Related Behavior in Mice with Chronic Spinal Cord Injury Treated with Neural Stem/Progenitor Cell Transplantation Combined with Treadmill Training. J Neurotrauma 2018; 35:2561-2571. [PMID: 29790403 DOI: 10.1089/neu.2017.5537] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Progress in regenerative medicine is realizing the possibility of neural regeneration and functional recovery in spinal cord injury (SCI). Recently, rehabilitation has attracted much attention with respect to the synergistic promotion of functional recovery in combination with neural stem/progenitor cell (NS/PC) transplantation, even in the chronic refractory phase of SCI. Nevertheless, sensory disturbance is one of the most prominent sequelae, even though the effects of combination or single therapies have been investigated mostly in the context of motor recovery. To determine how combination therapy with treadmill training (TMT) and NS/PC transplantation affects the manifestation of thermal allodynia and tactile hyperalgesia in chronic phase SCI, four groups of SCI mice were used to assess pain-related behavior and histological changes: combined transplantation and TMT therapy, transplantation only, TMT only, and control groups. Thermal allodynia and coarse touch-pressure hyperalgesia exhibited significant recovery in the combined therapy group in comparison with controls, whereas there were no significant differences with fine touch-pressure hyperalgesia and motor function. Further investigation revealed fewer fibers remaining in the posterior funiculus, which contained the tracts associated with the two modalities showing less recovery; that is, touch-pressure hyperalgesia and motor function. A significant correlation was only observed between these two modalities. Although no remarkable histological recovery was found within the lesion epicenter, changes indicating amelioration of pain were observed in the lumbar enlargement of the combination therapy group. Our results suggest that amelioration of thermal allodynia and tactile hyperalgesia can be brought about by the additive effect of NS/PC transplantation and TMT. The degree of recovery seems dependent on the distribution of damage.
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Affiliation(s)
- Syoichi Tashiro
- 1 Department of Rehabilitation Medicine, Keio University School of Medicine , Tokyo, Japan
| | - Soraya Nishimura
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan
| | - Munehisa Shinozaki
- 3 Department of Physiology, Keio University School of Medicine , Tokyo, Japan
| | - Morito Takano
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan
| | - Tsunehiko Konomi
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan .,4 Department of Orthopaedic Surgery, Murayama Medical Center , National Hospital Organization, Tokyo, Japan
| | - Osahiko Tsuji
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan
| | - Narihito Nagoshi
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan
| | - Yoshiaki Toyama
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan
| | - Meigen Liu
- 1 Department of Rehabilitation Medicine, Keio University School of Medicine , Tokyo, Japan
| | - Hideyuki Okano
- 3 Department of Physiology, Keio University School of Medicine , Tokyo, Japan
| | - Masaya Nakamura
- 2 Department of Orthopaedic Surgery, Keio University School of Medicine , Tokyo, Japan
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Li J, Wang Q, Cai H, He Z, Wang H, Chen J, Zheng Z, Yin J, Liao Z, Xu H, Xiao J, Gong F. FGF1 improves functional recovery through inducing PRDX1 to regulate autophagy and anti-ROS after spinal cord injury. J Cell Mol Med 2018. [PMID: 29512938 PMCID: PMC5908106 DOI: 10.1111/jcmm.13566] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Fibroblast growth factor 1 (FGF1) is thought to exert protective and regenerative effects on neurons following spinal cord injury (SCI), although the mechanism of these effects is not well understood. The use of FGF1 as a therapeutic agent is limited by its lack of physicochemical stability and its limited capacity to cross the blood‐spinal cord barrier. Here, we demonstrated that overexpression of FGF1 in spinal cord following SCI significantly reduced tissue loss, protected neurons in the ventricornu, ameliorated pathological morphology of the lesion, dramatically improved tissue recovery via neuroprotection, and promoted axonal regeneration and remyelination both in vivo and in vivo. In addition, the autophagy and the expression levels of PRDX1 (an antioxidant protein) were induced by AAV‐FGF1 in PC12 cells after H2O2 treatment. Furthermore, the autophagy levels were not changed in PRDX1‐suppressing cells that were treated by AAV‐FGF1. Taken together, these results suggest that FGF1 improves functional recovery mainly through inducing PRDX1 expression to increase autophagy and anti‐ROS activity after SCI.
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Affiliation(s)
- Jiawei Li
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qingqing Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hanxiao Cai
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zili He
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Haoli Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jian Chen
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zengming Zheng
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jiayu Yin
- School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhiyong Liao
- School of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang, China
| | - Huazi Xu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jian Xiao
- School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Fanghua Gong
- School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang, China
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Carrasco C, Naziroǧlu M, Rodríguez AB, Pariente JA. Neuropathic Pain: Delving into the Oxidative Origin and the Possible Implication of Transient Receptor Potential Channels. Front Physiol 2018; 9:95. [PMID: 29491840 PMCID: PMC5817076 DOI: 10.3389/fphys.2018.00095] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/29/2018] [Indexed: 12/25/2022] Open
Abstract
Currently, neuropathic pain is an underestimated socioeconomic health problem affecting millions of people worldwide, which incidence may increase in the next years due to chronification of several diseases, such as cancer and diabetes. Growing evidence links neuropathic pain present in several disorders [i.e., spinal cord injury (SCI), cancer, diabetes and alcoholism] to central sensitization, as a global result of mitochondrial dysfunction induced by oxidative and nitrosative stress. Additionally, inflammatory signals and the overload in intracellular calcium ion could be also implicated in this complex network that has not yet been elucidated. Recently, calcium channels namely transient receptor potential (TRP) superfamily, including members of the subfamilies A (TRAP1), M (TRPM2 and 7), and V (TRPV1 and 4), have demonstrated to play a role in the nociception mediated by sensory neurons. Therefore, as neuropathic pain could be a consequence of the imbalance between reactive oxygen species and endogen antioxidants, antioxidant supplementation may be a treatment option. This kind of therapy would exert its beneficial action through antioxidant and immunoregulatory functions, optimizing mitochondrial function and even increasing the biogenesis of this vital organelle; on balance, antioxidant supplementation would improve the patient's quality of life. This review seeks to deepen on current knowledge about neuropathic pain, summarizing clinical conditions and probable causes, the relationship existing between oxidative stress, mitochondrial dysfunction and TRP channels activation, and scientific evidence related to antioxidant supplementation.
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Affiliation(s)
- Cristina Carrasco
- Department of Physiology, Faculty of Sciences, University of Extremadura, Badajoz, Spain
| | - Mustafa Naziroǧlu
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey
| | - Ana B Rodríguez
- Department of Physiology, Faculty of Sciences, University of Extremadura, Badajoz, Spain
| | - José A Pariente
- Department of Physiology, Faculty of Sciences, University of Extremadura, Badajoz, Spain
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