1
|
Hu N, Liu J, Luo Y, Li Y. A comprehensive review of traditional Chinese medicine in treating neuropathic pain. Heliyon 2024; 10:e37350. [PMID: 39296122 PMCID: PMC11407996 DOI: 10.1016/j.heliyon.2024.e37350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 08/28/2024] [Accepted: 09/02/2024] [Indexed: 09/21/2024] Open
Abstract
Neuropathic pain (NP) is a common, intractable chronic pain caused by nerve dysfunction and primary lesion of the nervous system. The etiology and pathogenesis of NP have not yet been clarified, so there is a lack of precise and effective clinical treatments. In recent years, traditional Chinese medicine (TCM) has shown increasing advantages in alleviating NP. Our review aimed to define the therapeutic effect of TCM (including TCM prescriptions, TCM extracts and natural products from TCM) on NP and reveal the underlying mechanisms. Literature from 2018 to 2024 was collected from databases including Web of Science, PubMed, ScienceDirect, Google academic and CNKI databases. Herbal medicine, Traditional Chinese medicines (TCM), neuropathic pain, neuralgia and peripheral neuropathy were used as the search terms. The anti-NP activity of TCM is clarified to propose strategies for discovering active compounds against NP, and provide reference to screen anti-NP drugs from TCM. We concluded that TCM has the characteristics of multi-level, multi-component, multi-target and multi-pathway, which can alleviate NP through various pathways such as anti-inflammation, anti-oxidant, anti-apoptotic pathway, regulating autophagy, regulating intestinal flora, and influencing ion channels. Based on the experimental study and anti-NP mechanism of TCM, this paper can offer analytical evidence to support the effectiveness in treating NP. These references will be helpful to the research and development of innovative TCM with multiple levels and multiple targets. TCM can be an effective treatment for NP and can serve as a treasure house for new drug development.
Collapse
Affiliation(s)
- Naihua Hu
- Deyang Hospital of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 159, Section 2, Tianshan South Road, Deyang, 618000, Sichuan, China
| | - Jie Liu
- Deyang Hospital of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 159, Section 2, Tianshan South Road, Deyang, 618000, Sichuan, China
| | - Yong Luo
- Deyang Hospital of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 159, Section 2, Tianshan South Road, Deyang, 618000, Sichuan, China
| | - Yunxia Li
- Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| |
Collapse
|
2
|
Zhu Z, Yan Z, Ni S, Yang H, Xie Y, Wang X, Zou D, Tao C, Jiang W, Jiang J, Su Z, Xia Y, Zhou Z, Sun L, Fan C, Tao TH, Wei X, Qian Y, Liu K. Tissue/Organ Adaptable Bioelectronic Silk-Based Implants. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2405892. [PMID: 39036824 DOI: 10.1002/adma.202405892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 07/13/2024] [Indexed: 07/23/2024]
Abstract
Implantable bioelectronic devices, designed for both monitoring and modulating living organisms, require functional and biological adaptability. Pure silk is innovatively employed, which is known for its excellent biocompatibility, to engineer water-triggered, geometrically reconfigurable membranes, on which functions can be integrated by Micro Electro Mechanical System (MEMS) techniques and specially functionalized silk. These devices can undergo programmed shape deformations within 10 min once triggered by water, and thus establishing stable bioelectronic interfaces with natively fitted geometries. As a testament to the applicability of this approach, a twining peripheral nerve electrode is designed, fabricated, and rigorously tested, demonstrating its efficacy in nerve modulation while ensuring biocompatibility for successful implantation.
Collapse
Affiliation(s)
- Ziyi Zhu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Zhiwen Yan
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, 200233, China
| | - Siyuan Ni
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Huiran Yang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
| | - Yating Xie
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- ShanghaiTech University, 393 Middle Huaxia Rd., Shanghai, 200120, China
| | - Xueying Wang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Dujuan Zou
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
- 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 1455 Pingcheng Rd., Shanghai, 201800, China
| | - Chen Tao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- ShanghaiTech University, 393 Middle Huaxia Rd., Shanghai, 200120, China
| | - Wanqi Jiang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Jianbo Jiang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Zexi Su
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
- 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 1455 Pingcheng Rd., Shanghai, 201800, China
| | - Yuxin Xia
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
| | - Zhitao Zhou
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Liuyang Sun
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
- 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 1455 Pingcheng Rd., Shanghai, 201800, China
| | - Cunyi Fan
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, 200233, China
| | - Tiger H Tao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
- ShanghaiTech University, 393 Middle Huaxia Rd., Shanghai, 200120, China
- 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 1455 Pingcheng Rd., Shanghai, 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
- Guangdong Institute of Intelligence Science and Technology, Zhuhai, 519031, China
- Tianqiao and Chrissy Chen Institute for Translational Research, Shanghai, 200040, China
| | - Xiaoling Wei
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| | - Yun Qian
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, 200233, China
| | - Keyin Liu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Rd., Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, 1 East Yanqi Lake Rd., Beijing, 101408, China
| |
Collapse
|
3
|
Carnicer-Lombarte A, Boys AJ, Güemes A, Gurke J, Velasco-Bosom S, Hilton S, Barone DG, Malliaras GG. Ultraconformable cuff implants for long-term bidirectional interfacing of peripheral nerves at sub-nerve resolutions. Nat Commun 2024; 15:7523. [PMID: 39214981 PMCID: PMC11364531 DOI: 10.1038/s41467-024-51988-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024] Open
Abstract
Implantable devices interfacing with peripheral nerves exhibit limited longevity and resolution. Poor nerve-electrode interface quality, invasive surgical placement and development of foreign body reaction combine to limit research and clinical application of these devices. Here, we develop cuff implants with a conformable design that achieve high-quality and stable interfacing with nerves in chronic implantation scenarios. When implanted in sensorimotor nerves of the arm in awake rats for 21 days, the devices record nerve action potentials with fascicle-specific resolution and extract from these the conduction velocity and direction of propagation. The cuffs exhibit high biocompatibility, producing lower levels of fibrotic scarring than clinically equivalent PDMS silicone cuffs. In addition to recording nerve activity, the devices are able to modulate nerve activity at sub-nerve resolution to produce a wide range of paw movements. When used in a partial nerve ligation rodent model, the cuffs identify and characterise changes in nerve C fibre activity associated with the development of neuropathic pain in freely-moving animals. The developed implantable devices represent a platform enabling new forms of fine nerve signal sensing and modulation, with applications in physiology research and closed-loop therapeutics.
Collapse
Affiliation(s)
- Alejandro Carnicer-Lombarte
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom
| | - Alexander J Boys
- University of Cambridge, Department of Chemical Engineering and Biotechnology, Cambridge, CB2 0QQ, United Kingdom
| | - Amparo Güemes
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom
| | - Johannes Gurke
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom
- University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Santiago Velasco-Bosom
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom
| | - Sam Hilton
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom
| | - Damiano G Barone
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom.
- University of Cambridge, School of Clinical Medicine, Department of Clinical Neurosciences, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, United Kingdom.
| | - George G Malliaras
- University of Cambridge, Electrical Engineering Division, 9 JJ Thomson Ave, Cambridge, CB3 0FA, United Kingdom.
| |
Collapse
|
4
|
Oyama M, Watanabe S, Iwai T, Tanabe M. Selective inhibition of A-fiber-mediated excitatory transmission underlies the analgesic effects of KCNQ channel opening in the spinal dorsal horn. Neuropharmacology 2024; 254:109994. [PMID: 38750803 DOI: 10.1016/j.neuropharm.2024.109994] [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: 02/17/2024] [Revised: 04/11/2024] [Accepted: 05/10/2024] [Indexed: 05/18/2024]
Abstract
Neuronal voltage-gated KCNQ (Kv7) channels, expressed centrally and peripherally, mediate low-threshold and non-inactivating M-currents responsible for the control of tonic excitability of mammalian neurons. Pharmacological opening of KCNQ channels has been reported to generate analgesic effects in animal models of neuropathic pain. Here, we examined the possible involvement of central KCNQ channels in the analgesic effects of retigabine, a KCNQ channel opener. Behaviorally, intraperitoneally applied retigabine exerted analgesic effects on thermal and mechanical hypersensitivity in male mice developing neuropathic pain after partial sciatic nerve ligation, which was antagonized by the KCNQ channel blocker XE991 preadministered intraperitoneally and intrathecally. Intrathecally applied retigabine also exerted analgesic effects that were inhibited by intrathecally injected XE991. We then explored the synaptic mechanisms underlying the analgesic effects of retigabine in the spinal dorsal horn. Whole-cell recordings were made from dorsal horn neurons in spinal slices with attached dorsal roots from adult male mice developing neuropathic pain, and the effects of retigabine on miniature and afferent-evoked postsynaptic currents were examined. Retigabine reduced the amplitude of A-fiber-mediated EPSCs without affecting C-fiber-mediated excitatory synaptic transmission. A-fiber-mediated EPSCs remained unaltered by retigabine in the presence of XE991, consistently with the behavioral findings. The frequency and amplitude of mEPSCs were not affected by retigabine. Thus, opening of KCNQ channels in the central terminals of primary afferent A-fibers inhibits excitatory synaptic transmission in the spinal dorsal horn, most likely contributing to the analgesic effect of retigabine.
Collapse
Affiliation(s)
- Misa Oyama
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Shun Watanabe
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Takashi Iwai
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Mitsuo Tanabe
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| |
Collapse
|
5
|
Saika F, Fukazawa Y, Hatano Y, Kishioka S, Hino Y, Hino S, Suzuki K, Kiguchi N. Sexually dimorphic effects of pexidartinib on nerve injury-induced neuropathic pain in mice. Glia 2024; 72:1402-1417. [PMID: 38591338 DOI: 10.1002/glia.24535] [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: 01/11/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/10/2024]
Abstract
It is well-established that spinal microglia and peripheral macrophages play critical roles in the etiology of neuropathic pain; however, growing evidence suggests sex differences in pain hypersensitivity owing to microglia and macrophages. Therefore, it is crucial to understand sex- and androgen-dependent characteristics of pain-related myeloid cells in mice with nerve injury-induced neuropathic pain. To deplete microglia and macrophages, pexidartinib (PLX3397), an inhibitor of the colony-stimulating factor 1 receptor, was orally administered, and mice were subjected to partial sciatic nerve ligation (PSL). Following PSL induction, healthy male and female mice and male gonadectomized (GDX) mice exhibited similar levels of spinal microglial activation, peripheral macrophage accumulation, and mechanical allodynia. Treatment with PLX3397 significantly suppressed mechanical allodynia in normal males; this was not observed in female and GDX male mice. Sex- and androgen-dependent differences in the PLX3397-mediated preventive effects were observed on spinal microglia and dorsal root ganglia (DRG) macrophages, as well as in expression patterns of pain-related inflammatory mediators in these cells. Conversely, no sex- or androgen-dependent differences were detected in sciatic nerve macrophages, and inhibition of peripheral CC-chemokine receptor 5 prevented neuropathic pain in both sexes. Collectively, these findings demonstrate the presence of considerable sex- and androgen-dependent differences in the etiology of neuropathic pain in spinal microglia and DRG macrophages but not in sciatic nerve macrophages. Given that the mechanisms of neuropathic pain may differ among experimental models and clinical conditions, accumulating several lines of evidence is crucial to comprehensively clarifying the sex-dependent regulatory mechanisms of pain.
Collapse
Affiliation(s)
- Fumihiro Saika
- Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, Japan
- Faculty of Wakayama Health Care Sciences, Takarazuka University of Medical and Health Care, Wakayama, Japan
| | - Yohji Fukazawa
- Department of Anatomy, Kansai University of Health Sciences, Osaka, Japan
| | - Yu Hatano
- Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan
| | - Shiroh Kishioka
- Faculty of Wakayama Health Care Sciences, Takarazuka University of Medical and Health Care, Wakayama, Japan
| | - Yuko Hino
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Shinjiro Hino
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Kentaro Suzuki
- Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan
| | - Norikazu Kiguchi
- Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, Japan
| |
Collapse
|
6
|
de Geus TJ, Franken G, Joosten EAJ. Spinal Cord Stimulation Paradigms and Alleviation of Neuropathic Pain Behavior in Experimental Painful Diabetic Polyneuropathy. Neuromodulation 2024:S1094-7159(24)00138-7. [PMID: 39033461 DOI: 10.1016/j.neurom.2024.06.007] [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: 04/09/2024] [Revised: 06/01/2024] [Accepted: 06/20/2024] [Indexed: 07/23/2024]
Abstract
OBJECTIVES Spinal cord stimulation (SCS) is an alternative treatment option for painful diabetic polyneuropathy (PDPN). Differential target multiplexed (DTM)-SCS is proposed to be more effective than conventional (Con)-SCS. Animal studies are essential for understanding SCS mechanisms in PDPN pain relief. Although the Von Frey (VF) test is the gold standard for preclinical pain research, it has limitations. Operant testing using the conditioned place preference (CPP) test provides insights into spontaneous neuropathic pain relief and enhances the translatability of findings. This study aims to 1) use the CPP test to evaluate Con- and DTM-SCS effects on spontaneous neuropathic pain relief in PDPN animals and 2) investigate the correlation between mechanical hypersensitivity alleviation and spontaneous neuropathic pain relief. MATERIAL AND METHODS Diabetes was induced through streptozotocin injection in 32 rats; 16 animals developed PDPN and were implanted with a quadripolar lead. Rats were conditioned for Con-SCS (n = 8) or DTM-SCS (n = 7), and a preference score compared with sham was determined. After conditioning, a 30-minute SCS protocol was conducted. Mechanical sensitivity was assessed using VF before, during, and after SCS. RESULTS There were no significant chamber preference changes for DTM-SCS (p = 0.3449) or Con-SCS (p = 0.3632). Subgroups of responders and nonresponders were identified with significant increases in preference score for responders for both DTM-SCS (-266.6 to 119.8; p = 0.0238; n = 4) and Con-SCS (-350.7 to 88.46; p = 0.0148; n = 3). No strong correlation between SCS-induced spontaneous neuropathic pain relief and effects on mechanical hypersensitivity in PDPN animals is noted. CONCLUSIONS The CPP test is a valuable tool to test the efficacy of the pain-relieving potential of various SCS paradigms in PDPN animals. The results of this study show no differences in spontaneous neuropathic pain relief between DTM- and Con-SCS in PDPN animals. Furthermore, there is no correlation between the effect of SCS in spontaneous pain relief and hind paw mechanical hypersensitivity.
Collapse
Affiliation(s)
- Thomas J de Geus
- Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands; Mental Health and Neuroscience Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.
| | - Glenn Franken
- Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands; Mental Health and Neuroscience Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Elbert A J Joosten
- Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands; Mental Health and Neuroscience Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| |
Collapse
|
7
|
Raissi-Dehkordi N, Hajikarimloo B, Raissi-Dehkordi N, Khakpai F, Zarrindast MR. The additive effect between bupropion and citicoline upon induction of anti-nociceptive effect in nerve-ligated mice. Neurol Res 2024:1-8. [PMID: 38958173 DOI: 10.1080/01616412.2024.2370203] [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: 07/26/2023] [Accepted: 06/13/2024] [Indexed: 07/04/2024]
Abstract
OBJECTIVES Bupropion is an atypical antidepressant that shows robust efficacy in the regulation of neuropathic pain. Citicoline is a dietary supplement which is used as a neuroprotective agent for central nervous system (CNS) disorders. The probable interaction between bupropion and citicoline on neuropathic pain was assessed in male mice. METHODS Neuropathic pain was induced by sciatic nerve ligation. Neuropathic pain was examined in nerve-ligated mice using tail-flick and hot-plate tests. RESULTS The results indicated that intraperitoneal (i.p.) administration of citicoline (50 and 100 mg/kg) induced an anti-nociceptive effect in nerve-ligated animals. Similarly, i.p. injection of bupropion (2.5 and 5 mg/kg) induced anti-nociceptive effects in nerve-ligated mice. Co-administration of different doses of bupropion (2.5 and 5 mg/kg) along with a low dose of citicoline (25 mg/kg) caused an anti-nociceptive effect by enhancement of tail-flick and hot plate latencies. Interestingly, there is an additive effect between bupropion and citicoline upon the induction of the anti-nociceptive effect. CONCLUSIONS Based on these results, it can be concluded that there is an interaction between bupropion and citicoline upon induction of an anti-nociceptive effect in nerve-ligated mice.
Collapse
Affiliation(s)
| | - Bardia Hajikarimloo
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Fatemeh Khakpai
- Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mohammad-Reza Zarrindast
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran
- Department of Cognitive Science, Institute for Cognitive Science Studies (ICSS), Tehran, Iran
| |
Collapse
|
8
|
Buzza AS, Cousins H, Tapas KE, Anders JJ, Lewis SJ, Jenkins MW, Moffitt MA. Direct Photobiomodulation Therapy on the Sciatic Nerve Significantly Attenuates Acute Nociceptive Sensitivity Without Affecting Motor Output. Neuromodulation 2024:S1094-7159(24)00113-2. [PMID: 38958630 DOI: 10.1016/j.neurom.2024.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/14/2024] [Accepted: 04/30/2024] [Indexed: 07/04/2024]
Abstract
OBJECTIVES Pharmacologic pain treatments lack specific targeting and often produce unwanted side effects (eg, addiction, additional hyperalgesia). We previously established that the direct application of laser irradiation (direct photobiomodulation [PBM]) of the sural nerve reduces thermal hypersensitivity in a rodent model of chronic pain, but not mechanical hypersensitivity. These observations were consistent with a selective reduction in the small-diameter fiber contribution to electrophysiologically measured evoked response after direct PBM of a sensory nerve (saphenous). However, to our knowledge, direct application of laser irradiation has never been performed in an animal model of acute nociceptive pain or on a mixed nerve in which sensory and motor outcomes can be observed. MATERIALS AND METHODS In this study, we describe the effects of direct application of laser irradiation (808 nm, 60 mW, 4 minutes) on a mixed nerve (sciatic nerve) in an acute nociceptive pain model (intradermal capsaicin injection) in rats over the course of two weeks. To investigate whether laser irradiation of a mixed nerve alters motor function, in separate experiments, we applied laser irradiation to the sciatic nerve (using the same parameters as in the chronic pain experiments), and force generation of the gastrocnemius was measured. RESULTS Capsaicin-induced hypersensitivities to mechanical (pin prick) and thermal (Hargreaves) noxious stimuli, associated with Aδ- and C-fibers, showed a maximal reduction of 70% and 56.2%, respectively, by direct PBM, when compared with a control group (vehicle injection, no PBM) on the same day. This reduction was determined to be significant using a mixed-design analysis of variance with a p value < 0.05. Force generation remained unchanged for up to 120 minutes after laser irradiation. In summary, direct PBM selectively inhibits C- and Aδ-fiber transmission while leaving Aɑ-, Aβ-, and motor-fiber activity intact. CONCLUSIONS These results, in conjunction with our previous analyses of laser irradiation effects on the sural nerve in a chronic spared nerve injury pain model, suggest that direct PBM is a promising candidate for treating pain induced by small-diameter fiber activity.
Collapse
Affiliation(s)
- Andrew S Buzza
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Hannah Cousins
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Kalista E Tapas
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Juanita J Anders
- Department of Anatomy, Physiology, and Genetics, Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Stephen J Lewis
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH, USA; Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Michael W Jenkins
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA; Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Michael A Moffitt
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA.
| |
Collapse
|
9
|
Wang W, Zheng WQ, Du X, Chen SC, Chen YH, Ma QY, Wang H, Gao S, Tan R, Zhang HT, Zhou YM, Zhang FF. Chronic pain exacerbates memory impairment and pathology of Aβ and tau by upregulating IL-1β and p-65 signaling in a mouse model of Alzheimer's disease. Brain Res 2024; 1832:148843. [PMID: 38430996 DOI: 10.1016/j.brainres.2024.148843] [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: 12/14/2023] [Revised: 02/15/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Chronic pain is linked to cognitive impairment; however, the underlying mechanisms remain unclear. In the present study, we examined these mechanisms in a well-established mouse model of Alzheimer's disease (AD). METHODS Neuropathic pain was modeled in 5-month-old transgenic APPswe/PS1dE9 (APP/PS1) mice by partial ligation of the sciatic nerve on the left side, and chronic inflammatory pain was modeled in another group of APP/PS1 mice by injecting them with complete Freund's adjuvant on the plantar surface of the left hind paw. Six weeks after molding, the animals were tested to assess pain threshold (von Frey filament), learning, memory (novel object recognition, Morris water maze, Y-maze, and passive avoidance), and depression-like symptoms (sucrose preference, tail suspension, and forced swimming). After behavioral testing, mice were sacrificed and the levels of p65, amyloid-β (residues 1-42) and phospho-tau in the hippocampus and cerebral cortex were assayed using western blotting, while interleukin (IL)-1β levels were measured by enzyme-linked immunosorbent assay. RESULTS Animals subjected to either type of chronic pain showed lower pain thresholds, more severe deficits in learning and memory, and stronger depression-like symptoms than the corresponding control animals. Either type of chronic pain was associated with upregulation of p65, amyloid-β (1-42), and IL-1β in the hippocampus and cerebral cortex, as well as higher levels of phosphorylated tau. CONCLUSIONS Chronic pain may exacerbate cognitive deficits and depression-like symptoms in APP/PS1 mice by worsening pathology related to amyloid-β and tau and by upregulating signaling involving IL-1β and p65.
Collapse
Affiliation(s)
- Wei Wang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Wen-Qing Zheng
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China; Department of Pharmacy, the Second Affiliated Hospital of Shandong First Medical University, Tai'an, China
| | - Xian Du
- Tai'an Municipal Hospital, Tai'an, China
| | - Shi-Cai Chen
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yan-Han Chen
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Qing-Yang Ma
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Hao Wang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Shan Gao
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Rui Tan
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Han-Ting Zhang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yan-Meng Zhou
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China.
| | - Fang-Fang Zhang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China.
| |
Collapse
|
10
|
Saloman JL, Epouhe AY, Ruff CF, Albers KM. PDX1, a transcription factor essential for organ differentiation, regulates SERCA-dependent Ca 2+ homeostasis in sensory neurons. Cell Calcium 2024; 120:102884. [PMID: 38574509 PMCID: PMC11188734 DOI: 10.1016/j.ceca.2024.102884] [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: 01/05/2024] [Revised: 03/13/2024] [Accepted: 03/31/2024] [Indexed: 04/06/2024]
Abstract
Pancreatic and duodenal homeobox 1 (PDX1) is a transcription factor required for the development and differentiation of the pancreas. Previous studies indicated that PDX1 expression was restricted to the gastrointestinal tract. Using a cre-dependent reporter, we observed PDX1-dependent expression of tdtomato (PDX1-tom) in a subpopulation of sensory nerves. Many of these PDX1-tom afferents expressed the neurofilament 200 protein and projected to the skin. Tdtomato-labeled terminals were associated with hair follicles in the form of longitudinal and circumferential lanceolate endings suggesting a role in tactile and proprioceptive perception. To begin to examine the functional significance of PDX1 in afferents, we used Fura-2 imaging to examine calcium (Ca2+) handling under naïve and nerve injury conditions. Neuropathic injury is associated with increased intracellular Ca2+ signaling that in part results from dysregulation of the sarco/endoplasmic reticulum calcium transport ATPase (SERCA). Here we demonstrate that under naïve conditions, PDX1 regulates expression of the SERCA2B isoform in sensory neurons. In response to infraorbital nerve injury, a significant reduction of PDX1 and SERCA2B expression and dysregulation of Ca2+ handling occurs in PDX1-tom trigeminal ganglia neurons. The identification of PDX1 expression in the somatosensory system and its regulation of SERCA2B and Ca2+ handling provide a new mechanism to explain pathological changes in primary afferents that may contribute to pain associated with nerve injury.
Collapse
Affiliation(s)
- Jami L Saloman
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Neurobiology, Center for Neuroscience and Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| | - Ariel Y Epouhe
- Department of Neurobiology, Center for Neuroscience and Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Catherine F Ruff
- Department of Neurobiology, Center for Neuroscience and Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Kathryn M Albers
- Department of Neurobiology, Center for Neuroscience and Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| |
Collapse
|
11
|
Kato N, Kambe T, Chiba T, Taguchi K, Abe K. Analgesic effect of a cholinergic agonist (carbachol) in a sural nerve ligation-induced hypersensitivity mouse model. Neurol Res 2024; 46:505-515. [PMID: 38569563 DOI: 10.1080/01616412.2024.2337512] [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: 09/14/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
OBJECTIVES Neuropathic pain is characterized by long-lasting, intractable pain. Sciatic nerve ligation is often used as an animal model of neuropathic pain, and the spared nerve injury (SNI) model, in which the common peroneal nerve (CPN) and tibial nerve (TN) are ligated, is widely used. In the present study, we evaluated the analgesic effect of a cholinergic agonist, carbachol, on a neuropathic pain model prepared by sural nerve (SN) ligation in mice. METHODS The SN was tightly ligated as a branch of the sciatic nerve. Mechanical and thermal allodynia, and hyperalgesia were assessed using von Frey filaments and heat from a hot plate. The analgesic effects of intracerebroventricularly-administered morphine and carbachol were compared. RESULTS SN ligation resulted in a significant decrease in pain threshold for mechanical stimulation 1 day after ligation. In response to thermal stimulation, allodynia was observed at 50°C and hyperalgesia at 53 and 56°C 3 days after ligation. Content of thiobarbituric acid reactive substances (TBARS) in the spinal cord increased significantly at 6 and 12 h after ligation. Acetylcholine content of the spinal cord also increased at 5 and 7 days after ligation. Intracerebroventricular administration of carbachol at 7 days after ligation produced a marked analgesic effect against mechanical and thermal stimuli, which was stronger and longer-lasting than morphine at all experimental time points. CONCLUSION These findings suggest that cholinergic nerves are involved in allodynia and hyperalgesia of the SN ligation neuropathic pain model.
Collapse
Affiliation(s)
- Nodoka Kato
- Department of Pharmacology, School of Pharmaceutical Sciences, Ohu University, Koriyama, Fukushima, Japan
| | - Toshie Kambe
- Department of Medicinal Pharmacology, Showa Pharmaceutical University, Machida, Tokyo, Japan
| | - Terumasa Chiba
- Faculty of Pharmaceutical Sciences, Nihon Pharmaceutical University, Saitama, Japan
| | - Kyoji Taguchi
- Department of Pharmacology, ShowaPharmaceutical University, Machida, Tokyo, Japan
| | - Kenji Abe
- Department of Pharmacology, School of Pharmaceutical Sciences, Ohu University, Koriyama, Fukushima, Japan
- Faculty of Pharmaceutical Sciences, Nihon Pharmaceutical University, Saitama, Japan
| |
Collapse
|
12
|
Beckers P, Belo Do Nascimento I, Charlier M, Desmet N, Massie A, Hermans E. Implication of system x c- in neuroinflammation during the onset and maintenance of neuropathic pain. J Neuroinflammation 2024; 21:117. [PMID: 38715127 PMCID: PMC11077843 DOI: 10.1186/s12974-024-03112-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/25/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Despite the high prevalence of neuropathic pain, treating this neurological disease remains challenging, given the limited efficacy and numerous side effects associated with current therapies. The complexity in patient management is largely attributed to an incomplete understanding of the underlying pathological mechanisms. Central sensitization, that refers to the adaptation of the central nervous system to persistent inflammation and heightened excitatory transmission within pain pathways, stands as a significant contributor to persistent pain. Considering the role of the cystine/glutamate exchanger (also designated as system xc-) in modulating glutamate transmission and in supporting neuroinflammatory responses, we investigated the contribution of this exchanger in the development of neuropathic pain. METHODS We examined the implication of system xc- by evaluating changes in the expression/activity of this exchanger in the dorsal spinal cord of mice after unilateral partial sciatic nerve ligation. In this surgical model of neuropathic pain, we also examined the consequence of the genetic suppression of system xc- (using mice lacking the system xc- specific subunit xCT) or its pharmacological manipulation (using the pharmacological inhibitor sulfasalazine) on the pain-associated behavioral responses. Finally, we assessed the glial activation and the inflammatory response in the spinal cord by measuring mRNA and protein levels of GFAP and selected M1 and M2 microglial markers. RESULTS The sciatic nerve lesion was found to upregulate system xc- at the spinal level. The genetic deletion of xCT attenuated both the amplitude and the duration of the pain sensitization after nerve surgery, as evidenced by reduced responses to mechanical and thermal stimuli, and this was accompanied by reduced glial activation. Consistently, pharmacological inhibition of system xc- had an analgesic effect in lesioned mice. CONCLUSION Together, these observations provide evidence for a role of system xc- in the biochemical processes underlying central sensitization. We propose that the reduced hypersensitivity observed in the transgenic mice lacking xCT or in sulfasalazine-treated mice is mediated by a reduced gliosis in the lumbar spinal cord and/or a shift in microglial M1/M2 polarization towards an anti-inflammatory phenotype in the absence of system xc-. These findings suggest that drugs targeting system xc- could contribute to prevent or reduce neuropathic pain.
Collapse
Affiliation(s)
- Pauline Beckers
- Institute of Neuroscience, Group of Neuropharmacology, Université catholique de Louvain (UCLouvain), Avenue Hippocrate 53 (B1.53.01), Brussels, 1200, Belgium
| | - Inês Belo Do Nascimento
- Institute of Neuroscience, Group of Neuropharmacology, Université catholique de Louvain (UCLouvain), Avenue Hippocrate 53 (B1.53.01), Brussels, 1200, Belgium
| | - Mathilde Charlier
- Institute of Neuroscience, Group of Neuropharmacology, Université catholique de Louvain (UCLouvain), Avenue Hippocrate 53 (B1.53.01), Brussels, 1200, Belgium
| | - Nathalie Desmet
- Institute of Neuroscience, Group of Neuropharmacology, Université catholique de Louvain (UCLouvain), Avenue Hippocrate 53 (B1.53.01), Brussels, 1200, Belgium
| | - Ann Massie
- Neuro-Aging & Viro-Immunotherapy, Center for Neurosciences, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, Brussels, 1090, Belgium
| | - Emmanuel Hermans
- Institute of Neuroscience, Group of Neuropharmacology, Université catholique de Louvain (UCLouvain), Avenue Hippocrate 53 (B1.53.01), Brussels, 1200, Belgium.
| |
Collapse
|
13
|
Guo F, Lin SD, Du Y, Hu TT, Wang Y, Chen Z, Zhang SH. Secondary somatosensory cortex glutamatergic innervation of the thalamus facilitates pain. Pain 2024; 165:1142-1153. [PMID: 38112733 DOI: 10.1097/j.pain.0000000000003117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 09/27/2023] [Indexed: 12/21/2023]
Abstract
ABSTRACT Although the secondary somatosensory cortex (SII) is known to be involved in pain perception, its role in pain modulation and neuropathic pain is yet unknown. In this study, we found that glutamatergic neurons in deep layers of the SII (SII Glu ) responded to bilateral sensory inputs by changing their firing with most being inhibited by contralateral noxious stimulation. Optical inhibition and activation of unilateral SII Glu reduced and enhanced bilateral nociceptive sensitivity, respectively, without affecting mood status. Tracing experiments revealed that SII Glu sent dense monosynaptic projections to the posterolateral nucleus (VPL) and the posterior nucleus (Po) of the thalamus. Optical inhibition and activation of projection terminals of SII Glu in the unilateral VPL and Po inhibited and facilitated pain on the contralateral side, respectively. After partial sciatic nerve ligation, SII Glu became hyperactive as evidenced by higher frequency of spontaneous firing, but the response patterns to peripheral stimulation remained. Optical inhibition of SII Glu alleviated not only bilateral mechanical allodynia and thermal hyperalgesia but also the negative affect associated with spontaneous pain. Inhibition of SII Glu terminals in the VPL and Po also relieved neuropathic pain. This study revealed that SII Glu and the circuits to the VPL and Po constitute a part of the endogenous pain modulatory network. These corticothalamic circuits became hyperactive after peripheral nerve injury, hence contributes to neuropathic pain. These results justify proper inhibition of SII Glu and associated neural circuits as a potential clinical strategy for neuropathic pain treatment.
Collapse
Affiliation(s)
- Fang Guo
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shi-Da Lin
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yu Du
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ting-Ting Hu
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Wang
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhong Chen
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shi-Hong Zhang
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
14
|
Drinovac Vlah V, Bach-Rojecky L. Mirror-Image Pain Update: Complex Interactions Between Central and Peripheral Mechanisms. Mol Neurobiol 2024:10.1007/s12035-024-04102-x. [PMID: 38602655 DOI: 10.1007/s12035-024-04102-x] [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: 10/03/2022] [Accepted: 03/06/2024] [Indexed: 04/12/2024]
Abstract
The appearance of contralateral effects after unilateral injury has been shown in various experimental pain models, as well as in clinics. They consist of a diversity of phenomena in contralateral peripheral nerves, sensory ganglia, or spinal cord: from structural changes and altered gene or protein expression to functional consequences such as the development of mirror-image pain (MP). Although MP is a well-documented phenomenon, the exact molecular mechanism underlying the induction and maintenance of mirror-like spread of pain is still an unresolved challenge. MP has generally been explained by central sensitization mechanisms leading to facilitation of pain impulse transfer through neural connections between the two sides of the central nervous system. On the contrary, the peripheral nervous system (PNS) was usually regarded unlikely to evoke such a symmetrical phenomenon. However, recent findings provided evidence that events in the PNS could play a significant role in MP induction. This manuscript provides an updated and comprehensive synthesis of the MP phenomenon and summarizes the available data on the mechanisms. A more detailed focus is placed on reported evidence for peripheral mechanisms behind the MP phenomenon, which were not reviewed up to now.
Collapse
Affiliation(s)
- Višnja Drinovac Vlah
- Department of Pharmacology, University of Zagreb Faculty of Pharmacy and Biochemistry, Domagojeva 2, 10000, Zagreb, Croatia
| | - Lidija Bach-Rojecky
- Department of Pharmacology, University of Zagreb Faculty of Pharmacy and Biochemistry, Domagojeva 2, 10000, Zagreb, Croatia.
| |
Collapse
|
15
|
Coelho DRA, Gersten M, Jimenez AS, Fregni F, Cassano P, Vieira WF. Treating neuropathic pain and comorbid affective disorders: Preclinical and clinical evidence. Pain Pract 2024. [PMID: 38572653 DOI: 10.1111/papr.13370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
INTRODUCTION Neuropathic pain (NP) significantly impacts quality of life and often coexists with affective disorders such as anxiety and depression. Addressing both NP and its psychiatric manifestations requires a comprehensive understanding of therapeutic options. This study aimed to review the main pharmacological and non-pharmacological treatments for NP and comorbid affective disorders to describe their mechanisms of action and how they are commonly used in clinical practice. METHODS A review was conducted across five electronic databases, focusing on pharmacological and non-pharmacological treatments for NP and its associated affective disorders. The following combination of MeSH and title/abstract keywords were used: "neuropathic pain," "affective disorders," "depression," "anxiety," "treatment," and "therapy." Both animal and human studies were included to discuss the underlying therapeutic mechanisms of these interventions. RESULTS Pharmacological interventions, including antidepressants, anticonvulsants, and opioids, modulate neural synaptic transmission to alleviate NP. Topical agents, such as capsaicin, lidocaine patches, and botulinum toxin A, offer localized relief by desensitizing pain pathways. Some of these drugs, especially antidepressants, also treat comorbid affective disorders. Non-pharmacological techniques, including repetitive transcranial magnetic stimulation, transcranial direct current stimulation, and photobiomodulation therapy, modulate cortical activity and have shown promise for NP and mood disorders. CONCLUSIONS The interconnection between NP and comorbid affective disorders necessitates holistic therapeutic strategies. Some pharmacological treatments can be used for both conditions, and non-pharmacological interventions have emerged as promising complementary approaches. Future research should explore novel molecular pathways to enhance treatment options for these interrelated conditions.
Collapse
Affiliation(s)
- David Richer Araujo Coelho
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Maia Gersten
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | - Felipe Fregni
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital, Boston, Massachusetts, USA
| | - Paolo Cassano
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - Willians Fernando Vieira
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
16
|
Dang TN, Tien SN, Ochi R, Le Trung D, Nishio K, Kuwamura H, Kurose T, Fujita N, Nishijo H, Nakamura Y, Hisaoka-Nakashima K, Morioka N, Urakawa S. Enhanced anxiety-like behavior induced by chronic neuropathic pain and related parvalbumin-positive neurons in male rats. Behav Brain Res 2024; 459:114786. [PMID: 38036265 DOI: 10.1016/j.bbr.2023.114786] [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: 09/28/2023] [Revised: 11/19/2023] [Accepted: 11/23/2023] [Indexed: 12/02/2023]
Abstract
Anxiety commonly co-occurs with and exacerbates pain, but the interaction between pain progression and anxiety, and its underlying mechanisms remain unclear. Inhibitory interneurons play a crucial role in maintaining normal central nervous system function and are suggested to be involved in pain-induced anxiety. This study aimed to elucidate the time-dependent effects of neuropathic pain on the developmental anxiety-like behaviors and related inhibitory interneurons; parvalbumin (PV)- and cholecystokinin (CCK)-positive neurons in corticolimbic regions. Using an 8-week-old male Wistar rat model with partial sciatic nerve ligation (pSNL), anxiety-like behaviors were biweekly assessed post-surgery through open field (OF) and elevated plus maze (EPM) tests. From 4 weeks post-surgery, pSNL rats exhibited reduced OF center time, rearing, and initial activity, along with diminished EPM open-arm activities (time spent, head dips, movement, and rearing), which correlated with the paw withdrawal threshold. These effects were absent at 2 weeks post-surgery. At 8 weeks post-surgery, specific behaviors (decreased total rearing and increased inactive time in EPM) were observed in the pSNL group. Immunohistochemistry revealed changes in PV- and CCK-positive neurons in specific corticolimbic subregions of pSNL rats at 8 weeks post-surgery. Notably, PV-positive neuron densities in the basolateral amygdaloid complex (BLC) and hippocampal cornu ammonis areas 1 and 2 correlated with anxiety-like behavioral parameters. PV-positive neurons in the BLC of pSNL rats were predominantly changed in large-cell subtypes and were less activated. These findings indicate that anxiety-like behaviors emerge in the late phase of neuropathic pain and relate to PV-positive neurons in corticolimbic regions of pSNL rats.
Collapse
Affiliation(s)
- Thu Nguyen Dang
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Son Nguyen Tien
- Department of Rheumatology and Endocrinology, Military Hospital 103, Vietnam Military Medical University, No. 261 Phung Hung Street, Ha Dong District, Hanoi 12108, Viet Nam
| | - Ryosuke Ochi
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Duc Le Trung
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Kyo Nishio
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Hiroki Kuwamura
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Tomoyuki Kurose
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Naoto Fujita
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Hisao Nishijo
- Faculty of Human Sciences, University of East Asia, 2-12-1 Ichinomiya Gakuen-cho, Shimonoseki City, Yamaguchi 751-8503, Japan
| | - Yoki Nakamura
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Kazue Hisaoka-Nakashima
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Norimitsu Morioka
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan
| | - Susumu Urakawa
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan.
| |
Collapse
|
17
|
Jager SE, Goodwin G, Chisholm KI, Denk F. In vivo calcium imaging shows that satellite glial cells have increased activity in painful states. Brain Commun 2024; 6:fcae013. [PMID: 38638153 PMCID: PMC11024818 DOI: 10.1093/braincomms/fcae013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 11/22/2023] [Accepted: 01/17/2024] [Indexed: 04/20/2024] Open
Abstract
Satellite glial cells are important for proper neuronal function of primary sensory neurons for which they provide homeostatic support. Most research on satellite glial cell function has been performed with in vitro studies, but recent advances in calcium imaging and transgenic mouse models have enabled this first in vivo study of single-cell satellite glial cell function in mouse models of inflammation and neuropathic pain. We found that in naïve conditions, satellite glial cells do not respond in a time-locked fashion to neuronal firing. In painful inflammatory and neuropathic states, we detected time-locked signals in a subset of satellite glial cells, but only with suprathreshold stimulation of the sciatic nerve. Surprisingly, therefore, we conclude that most calcium signals in satellite glial cells seem to develop at arbitrary intervals not directly linked to neuronal activity patterns. More in line with expectations, our experiments also revealed that the number of active satellite glial cells was increased under conditions of inflammation or nerve injury. This could reflect the increased requirement for homeostatic support across dorsal root ganglion neuron populations, which are more active during such painful states.
Collapse
Affiliation(s)
- Sara E Jager
- Wolfson Centre for Age-related Diseases, King’s College London, Guy’s Campus, London SE1 1UL, UK
- Molecular Neuropharmacology and Genetics Laboratory, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - George Goodwin
- Wolfson Centre for Age-related Diseases, King’s College London, Guy’s Campus, London SE1 1UL, UK
| | - Kim I Chisholm
- Pain Centre Versus Arthritis, School of Life Sciences, University of Nottingham, Nottingham NG5 1PB, UK
| | - Franziska Denk
- Wolfson Centre for Age-related Diseases, King’s College London, Guy’s Campus, London SE1 1UL, UK
| |
Collapse
|
18
|
Heijmans L, Zhang TC, Esteller R, Joosten EA. Ninety-Hz Spinal Cord Stimulation-Induced Analgesia Is Dependent on Active Charge Balance and Is Nonlinearly Related to Amplitude: A Sham-Controlled Behavioral Study in a Rodent Model of Chronic Neuropathic Pain. Neuromodulation 2024; 27:95-107. [PMID: 37978974 DOI: 10.1016/j.neurom.2023.09.005] [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: 06/06/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Ninety-Hz active-recharge spinal cord stimulation (SCS) applied at below sensory-threshold intensity, as used with fast-acting subperception therapy spinal cord stimulation, has been shown clinically to produce significant analgesia, but additional characterization is required to better understand the therapy. This preclinical study investigates the behavioral effect of multiple 90-Hz SCS variants in a rodent model of neuropathic pain, focusing on charge balance and the relationship between 90-Hz efficacy and stimulation intensity. MATERIALS AND METHODS Rats (n = 24) received a unilateral partial sciatic nerve ligation to induce neuropathic pain and were implanted with a quadripolar lead at T13. Mechanical hypersensitivity was assessed before, during, and after 60 minutes of SCS. After a prescreen with 50-Hz SCS 67% motor threshold ([MT], the positive control), rats underwent a randomized-crossover study including sham SCS and several 90-Hz SCS paradigms (at 40% MT or 60% MT, either using active or pseudopassive recharge) (experiment 1, n = 16). A second, identical experiment (experiment 2) was performed to supplement data with 90-Hz SCS at 20% and 80% MT (experiment 2, n = 8). RESULTS Experiment 1: At 40% MT, 90-Hz active-recharge SCS produced a significantly larger recovery to baseline than did 90-Hz pseudopassive SCS at both tested intensities and sham SCS. Experiment 2: Only the 90-Hz SCS active recharge at 40% MT and 50-Hz SCS positive control caused mean recovery to baseline that was statistically better than that of sham SCS. CONCLUSIONS The degree to which 90-Hz SCS reduced mechanical hypersensitivity during stimulation depended on the nature of charge balance, with 90-Hz active-recharge SCS generating better responses than did 90-Hz pseudopassive recharge SCS. In addition, our findings suggest that the amplitude of 90-Hz active-recharge SCS must be carefully configured for efficacy.
Collapse
Affiliation(s)
- Lonne Heijmans
- Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands; Department of Translational Neuroscience, School of Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands.
| | - Tianhe C Zhang
- Boston Scientific: Neuromodulation, Research and Advanced Concepts Team, Valencia, CA, USA
| | - Rosana Esteller
- Boston Scientific: Neuromodulation, Research and Advanced Concepts Team, Valencia, CA, USA
| | - Elbert A Joosten
- Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands; Department of Translational Neuroscience, School of Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| |
Collapse
|
19
|
Li L, Li T, Qu X, Sun G, Fu Q, Han G. Stress/cell death pathways, neuroinflammation, and neuropathic pain. Immunol Rev 2024; 321:33-51. [PMID: 37688390 DOI: 10.1111/imr.13275] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 08/14/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023]
Abstract
Neuropathic pain is a common and debilitating modality of chronic pain induced by a lesion or disease of the somatosensory nervous system. Albeit the elucidation of numerous pathophysiological mechanisms and the development of potential treatment compounds, safe and reliable therapies of neuropathic pain remain poor. Multiple stress/cell death pathways have been shown to be implicated in neuroinflammation during neuropathic pain. Here, we summarize the current knowledge of stress/cell death pathways and present an overview of the roles and molecular mechanisms of stress/cell death pathways in neuroinflammation during neuropathic pain, covering intrinsic and extrinsic apoptosis, autophagy, mitophagy, ferroptosis, pyroptosis, necroptosis, and phagoptosis. Small molecule compounds that modulate stress/cell death pathways in alleviating neuropathic pain are discussed mainly based on preclinical neuropathic pain models. These findings will contribute to in-depth understanding of the pathological processes during neuropathic pain as well as bridge the gap between basic and translational research to uncover new neuroprotective interventions.
Collapse
Affiliation(s)
- Lu Li
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Tian Li
- School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xinyu Qu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Guangwei Sun
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qi Fu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Guang Han
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
20
|
Iamjan SA, Veerasakul S, Thanoi S, Tiyaboonchai W, Nudmamud-Thanoi S. A solid lipid particle formulation of long pepper extract reduces pain and astrocyte activation in a rat model of neuropathic pain. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2023; 20:714-720. [PMID: 37712769 DOI: 10.1515/jcim-2023-0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/20/2023] [Indexed: 09/16/2023]
Abstract
OBJECTIVES To investigate the effects of solid lipid microparticle (SLM) creams containing a long pepper extract (LPE) or piperine on neuropathy-related pain and the expression of glial fibrillary acidic protein (GFAP) as a measure of astrogliosis. METHODS Neuropathic pain in male Spraque Dawley rats was induced by sciatic nerve ligation (SNL) and followed by treatment with LPE-SLM, piperine-SLM, capsaicin or vehicle creams. The pain score was assessed by thermal hyperalgesia test. The GFAP expression in the spinal cord was determined by immunohistochemistry. RESULTS Pain scores were significantly increased after SNL and decreased when treated by LPE-SLM. The number of GFAP immunopositive cells was significantly increased in the SNL rats. Treated by LPE-SLM and capsaicin creams resulted in a significant reduction of the number of GFAP immunopositive cells. The LPE-SLM treated rats showed greater effects than the piperine and capsaicin preparations. CONCLUSIONS The LPE-SLM cream has a potential effect on pain attenuation via a decrease of spinal astrocyte activation-related mechanism. The LPE in SLM preparation could provide an alternative therapeutic strategy for treating neuropathic pain.
Collapse
Affiliation(s)
- Sri-Arun Iamjan
- Department of Medical Sciences, Faculty of Allied Health Sciences, Burapha University, Chonburi, Thailand
| | - Siriluk Veerasakul
- School of Allied Health Sciences and Public Health, Walailak University, Nakhon Si Thammarat, Thailand
| | - Samur Thanoi
- School of Medical Sciences, University of Phayao, Phayao, Thailand
| | - Waree Tiyaboonchai
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Sutisa Nudmamud-Thanoi
- Department of Anatomy, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Centre of Excellence in Medical Biotechnology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| |
Collapse
|
21
|
Shimizu M, Yoshimura M, Baba K, Ikeda N, Nonaka Y, Maruyama T, Onaka T, Ueta Y. Deschloroclozapine exhibits an exquisite agonistic effect at lower concentration compared to clozapine-N-oxide in hM3Dq expressing chemogenetically modified rats. Front Neurosci 2023; 17:1301515. [PMID: 38099201 PMCID: PMC10720889 DOI: 10.3389/fnins.2023.1301515] [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: 09/25/2023] [Accepted: 11/03/2023] [Indexed: 12/17/2023] Open
Abstract
Introduction Within the realm of chemogenetics, a particular form of agonists targeting designer receptors exclusively activated by designer drugs (DREADDs) has emerged. Deschloroclozapine (DCZ), a recently introduced DREADDs agonist, demonstrates remarkable potency in activating targeted neurons at a lower dosage compared to clozapine-N-oxide (CNO). Methods We conducted a comparative analysis of the effects of subcutaneously administered CNO (1 mg/kg) and DCZ (0.1 mg/kg) in our transgenic rats expressing hM3Dq and mCherry exclusively in oxytocin (OXT) neurons. Results and Discussion Notably, DCZ exhibited a swift and robust elevation of serum OXT, surpassing the effects of CNO, with a significant increase in the area under the curve (AUC) up to 3 hours post-administration. Comprehensive assessment of brain neuronal activity, using Fos as an indicator, revealed comparable effects between CNO and DCZ. Additionally, in a neuropathic pain model, both CNO and DCZ increased the mechanical nociceptive and thermal thresholds; however, the DCZ-treated group exhibited a significantly accelerated onset of the effects, aligning harmoniously with the observed alterations in serum OXT concentration following DCZ administration. These findings emphasize the remarkable efficacy of DCZ in rats, suggesting its equivalent or potentially superior performance to CNO at considerably lower dosages, thus positioning it as a promising contender among DREADDs agonists.
Collapse
Affiliation(s)
- Makiko Shimizu
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Mitsuhiro Yoshimura
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kazuhiko Baba
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Naofumi Ikeda
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yuki Nonaka
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Takashi Maruyama
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Tatsushi Onaka
- Division of Brain and Neurophysiology, Department of Physiology, Jichi Medical University, Shimotsuke, Japan
| | - Yoichi Ueta
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| |
Collapse
|
22
|
Kohno T, Takaki K, Kishita K, Mitsutake K, Tofuku N, Kishita I. Neuromodulation Through Magnetic Fields Irradiation with AT-04 Improves Hyperalgesia in a Rat Model of Neuropathic Pain via Descending Pain Modulatory Systems and Opioid Analgesia. Cell Mol Neurobiol 2023; 43:4345-4362. [PMID: 37934363 PMCID: PMC10660917 DOI: 10.1007/s10571-023-01430-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/25/2023] [Indexed: 11/08/2023]
Abstract
Neuromodulation through magnetic fields irradiation with ait® (AT-04), a device that irradiates a mixed alternating magnetic fields (2 kHz and 83.3 MHz), has been shown to have high efficacy for fibromyalgia and low back pain in our previous clinical trials. The aim of this study was to elucidate the underlying analgesic mechanism of the AT-04 using the partial sciatic nerve ligation (PSL) model as an animal model of neuropathic pain. AT-04 was applied to PSL model rats with hyperalgesia and its pain-improving effect was verified by examining mechanical allodynia using the von Frey method. The results demonstrated a significant improvement in hyperalgesia in PSL model rats. We also examined the involvement of descending pain modulatory systems in the analgesic effects of AT-04 using antagonism by serotonin and noradrenergic receptor antagonists. These antagonists significantly reduced the analgesic effect of AT-04 on pain in PSL model rats by approximately 50%. We also measured the amount of serotonin and noradrenaline in the spinal fluid of PSL model rats using microdialysis during AT-04 treatment. Both monoamines were significantly increased by magnetic fields irradiation with AT-04. Furthermore, we evaluated the involvement of opioid analgesia in the analgesic effects of AT-04 using naloxone, the main antagonist of the opioid receptor, and found that it significantly antagonized the effects by approximately 60%. Therefore, the analgesic effects of AT-04 in PSL model rats involve both the endogenous pain modulation systems, including the descending pain modulatory system and the opioid analgesic system.
Collapse
Affiliation(s)
- Tatsuro Kohno
- Anesthesiology and Intensive Care Medicine, International University of Health and Welfare, 852 Hatakeda, Narita City, Chiba, 286-0124, Japan
| | - Kaori Takaki
- Peace of Mind Co., Ltd, 2-8-6 Tokuo, Kita-Ku, Kumamoto City, Kumamoto, 861-5525, Japan
| | - Kaori Kishita
- Peace of Mind Co., Ltd, 2-8-6 Tokuo, Kita-Ku, Kumamoto City, Kumamoto, 861-5525, Japan
| | - Kazunori Mitsutake
- Peace of Mind Co., Ltd, 2-8-6 Tokuo, Kita-Ku, Kumamoto City, Kumamoto, 861-5525, Japan
| | - Nozomu Tofuku
- Peace of Mind Co., Ltd, 2-8-6 Tokuo, Kita-Ku, Kumamoto City, Kumamoto, 861-5525, Japan
| | - Iwao Kishita
- Peace of Mind Co., Ltd, 2-8-6 Tokuo, Kita-Ku, Kumamoto City, Kumamoto, 861-5525, Japan.
| |
Collapse
|
23
|
Phan TT, Jayathilake NJ, Lee KP, Park JM. BDNF/TrkB Signaling Inhibition Suppresses Astrogliosis and Alleviates Mechanical Allodynia in a Partial Crush Injury Model. Exp Neurobiol 2023; 32:343-353. [PMID: 37927132 PMCID: PMC10628862 DOI: 10.5607/en23031] [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: 09/26/2023] [Revised: 10/13/2023] [Accepted: 10/22/2023] [Indexed: 11/07/2023] Open
Abstract
Neuropathic pain presents a formidable clinical challenge due to its persistent nature and limited responsiveness to conventional analgesic treatments. While significant progress has been made in understanding the role of spinal astrocytes in neuropathic pain, their contribution and functional changes following a partial crush injury (PCI) remain unexplored. In this study, we investigated structural and functional changes in spinal astrocytes during chronic neuropathic pain, employing a partial crush injury model. This model allowes us to replicate the transition from initial nociceptive responses to persistent pain, highlighting the relevance of astrocytes in pain maintenance and sensitization. Through the examination of mechanical allodynia, a painful sensation in response to innocuous stimuli, and the correlation with increased levels of brain-derived neurotrophic factor (BDNF) along with reactive astrocytes, we identified a potential mechanistic link between astrocytic activity and BDNF signaling. Ultimately, our research provides evidence that inhibiting astrocyte activation through a BDNF/TrkB inhibitor alleviates mechanical allodynia, underscoring the therapeutic potential of targeting glial BDNF-related pathways for pain management. These findings offer critical insights into the cellular and molecular dynamics of neuropathic pain, paving the way for innovative and targeted treatment strategies for this challenging condition.
Collapse
Affiliation(s)
- Tien Thuy Phan
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
- IBS School, University of Science and Technology, Daejeon 34126, Korea
| | - Nishani Jayanika Jayathilake
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
- Department of Physiology, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Kyu Pil Lee
- Department of Physiology, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Joo Min Park
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
- IBS School, University of Science and Technology, Daejeon 34126, Korea
| |
Collapse
|
24
|
Gunduz O, Yurtgezen ZG, Topuz RD, Sapmaz-Metin M, Kaya O, Orhan AE, Ulugol A. The therapeutic effects of transferring remote ischemic preconditioning serum in rats with neuropathic pain symptoms. Heliyon 2023; 9:e20954. [PMID: 37867836 PMCID: PMC10585389 DOI: 10.1016/j.heliyon.2023.e20954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/24/2023] [Accepted: 10/11/2023] [Indexed: 10/24/2023] Open
Abstract
Background and objectives Neuropathic pain is defined as pain caused by damage to the nerve as a result of a lesion or disease. It has been shown that ischemic preconditioning exerts a protective role in various tissue injuries; however, the effect of transplantation of remote ischemic preconditioning serum (RIPCs) on neuropathic pain symptoms has not been studied. The aim of this project is to investigate the effect of RIPCs transfusion by different routes of administration on neuropathic pain symptoms. Our secondary aim was to demonstrate the role of Schwann cells in the regeneration of sciatic nerve injury and to evaluate the change in the number of glial cells in the spinal cord dorsal horn. Methods The sciatic nerve partial ligation method was used to induce neuropathic pain. Changes in neuropathic pain symptoms were assessed by measuring thermal hyperalgesia and mechanical allodynia. To determine the possible therapeutic site, alterations in the number of spinal cord lumbar posterior horn microglia and astrocytes were evaluated by ionized calcium-binding adapter molecule 1 (iba1) and glial fibrillary acidic protein (GFAP) immunostaining. Myelin basic protein immunohistochemistry was also used to assess Schwann cell immunoreactivity in the sciatic nerve. Results In rats that underwent partial sciatic nerve ligation, neuropathic pain symptoms developed on average on day 12 and persisted up to day 21 (p < 0.0001). RIPCs administered intravenously for five days reduced thermal hyperalgesia more than intraperitoneal and subcutaneous administration (p < 0.05). Both central glial cells appear to play a role in the effect of RIPCs. RIPCs treatment increases Schwann cell remyelination. Conclusions Our results showed that intravenously administered RIPCs remarkably improved the neuropathic pain symptoms, thermal hyperalgesia and mechanical allodynia. Further studies are needed to evaluate the role of RIPCs transfusion on glial cells.
Collapse
Affiliation(s)
- Ozgur Gunduz
- Department of Medical Pharmacology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | | | - Ruhan Deniz Topuz
- Department of Medical Pharmacology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Melike Sapmaz-Metin
- Department of Histology and Embryology, Faculty of Medicine, Trakya University, Turkey
| | - Oktay Kaya
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Abdullah Erkan Orhan
- Department of Plastic Surgery, Faculty of Medicine, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Ahmet Ulugol
- Department of Medical Pharmacology, Faculty of Medicine, Trakya University, Edirne, Turkey
| |
Collapse
|
25
|
Hu Y, Liu J, Zhuang R, Zhang C, Lin F, Wang J, Peng S, Zhang W. Progress in Pathological and Therapeutic Research of HIV-Related Neuropathic Pain. Cell Mol Neurobiol 2023; 43:3343-3373. [PMID: 37470889 DOI: 10.1007/s10571-023-01389-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 07/10/2023] [Indexed: 07/21/2023]
Abstract
HIV-related neuropathic pain (HRNP) is a neurodegeneration that gradually develops during the long-term course of acquired immune deficiency syndrome (AIDS) and manifests as abnormal sock/sleeve-like symmetrical pain and nociceptive hyperalgesia in the extremities, which seriously reduces patient quality of life. To date, the pathogenesis of HRNP is not completely clear. There is a lack of effective clinical treatment for HRNP and it is becoming a challenge and hot spot for medical research. In this study, we conducted a systematic review of the progress of HRNP research in recent years including (1) the etiology, classification and clinical symptoms of HRNP, (2) the establishment of HRNP pathological models, (3) the pathological mechanisms underlying HRNP from three aspects: molecules, signaling pathways and cells, (4) the therapeutic strategies for HRNP, and (5) the limitations of recent HRNP research and the future research directions and prospects of HRNP. This detailed review provides new and systematic insight into the pathological mechanism of HRNP, which establishes a theoretical basis for the future exploitation of novel target drugs. HIV infection, antiretroviral therapy and opioid abuse contribute to the etiology of HRNP with symmetrical pain in both hands and feet, allodynia and hyperalgesia. The pathogenesis involves changes in cytokine expression, activation of signaling pathways and neuronal cell states. The therapy for HRNP should be patient-centered, integrating pharmacologic and nonpharmacologic treatments into multimodal intervention.
Collapse
Affiliation(s)
- YanLing Hu
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - JinHong Liu
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Renjie Zhuang
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Chen Zhang
- Department of Biological Sciences, University of Denver, Denver, CO, 80210, USA
| | - Fei Lin
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Jun Wang
- Department of Orthopedics, Rongjun Hospital, Jiaxing, Zhejiang, China
| | - Sha Peng
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Wenping Zhang
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China.
| |
Collapse
|
26
|
Kim HW, Shim SW, Zhao AM, Roh D, Han HM, Middleton SJ, Kim W, Chung S, Johnson E, Prentice J, Tacon M, Koel-Simmelink MJ, Wieske L, Teunissen CE, Bae YC, Bennett DL, Rinaldi S, Davies AJ, Oh SB. Long-term tactile hypersensitivity after nerve crush injury in mice is characterized by the persistence of intact sensory axons. Pain 2023; 164:2327-2342. [PMID: 37366595 PMCID: PMC10502897 DOI: 10.1097/j.pain.0000000000002937] [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: 10/17/2022] [Revised: 04/05/2023] [Accepted: 04/12/2023] [Indexed: 06/28/2023]
Abstract
ABSTRACT Traumatic peripheral nerve injuries are at high risk of neuropathic pain for which novel effective therapies are urgently needed. Preclinical models of neuropathic pain typically involve irreversible ligation and/or nerve transection (neurotmesis). However, translation of findings to the clinic has so far been unsuccessful, raising questions on injury model validity and clinically relevance. Traumatic nerve injuries seen in the clinic commonly result in axonotmesis (ie, crush), yet the neuropathic phenotype of "painful" nerve crush injuries remains poorly understood. We report the neuropathology and sensory symptoms of a focal nerve crush injury using custom-modified hemostats resulting in either complete ("full") or incomplete ("partial") axonotmesis in adult mice. Assays of thermal and mechanically evoked pain-like behavior were paralleled by transmission electron microscopy, immunohistochemistry, and anatomical tracing of the peripheral nerve. In both crush models, motor function was equally affected early after injury; by contrast, partial crush of the nerve resulted in the early return of pinprick sensitivity, followed by a transient thermal and chronic tactile hypersensitivity of the affected hind paw, which was not observed after a full crush injury. The partially crushed nerve was characterized by the sparing of small-diameter myelinated axons and intraepidermal nerve fibers, fewer dorsal root ganglia expressing the injury marker activating transcription factor 3, and lower serum levels of neurofilament light chain. By day 30, axons showed signs of reduced myelin thickness. In summary, the escape of small-diameter axons from Wallerian degeneration is likely a determinant of chronic pain pathophysiology distinct from the general response to complete nerve injury.
Collapse
Affiliation(s)
- Hyoung Woo Kim
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Sang Wook Shim
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Anna Mae Zhao
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Dahee Roh
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Hye Min Han
- Department of Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Steven J. Middleton
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Wheedong Kim
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sena Chung
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Errin Johnson
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - John Prentice
- Oxford Institute for Radiation Oncology, Old Road Campus Research Building, University of Oxford, Oxford, United Kingdom
| | - Mike Tacon
- Department of Physics, Denys Wilkinson Building, University of Oxford, Oxford, United Kingdom
| | - Marleen J.A. Koel-Simmelink
- Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam Neuroscience, Neurodegeneration, Amsterdam UMC, Vrije Universiteit Amsterdam, the Netherlands
| | - Luuk Wieske
- Department of Neurology and Neurophysiology, Amsterdam UMC, Academisch Medisch Centrum, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Charlotte E. Teunissen
- Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam Neuroscience, Neurodegeneration, Amsterdam UMC, Vrije Universiteit Amsterdam, the Netherlands
| | - Yong Chul Bae
- Department of Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - David L.H. Bennett
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Simon Rinaldi
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Alexander J. Davies
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Seog Bae Oh
- Department of Neurobiology and Physiology, School of Dentistry, and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Brain and Cognitive Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| |
Collapse
|
27
|
Goel R, Kumar N, Singh N, Mishra R. Nanoencapsulation and characterisation of Hypericum perforatum for the treatment of neuropathic pain. J Microencapsul 2023; 40:402-411. [PMID: 37191895 DOI: 10.1080/02652048.2023.2215306] [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: 01/03/2023] [Accepted: 05/15/2023] [Indexed: 05/17/2023]
Abstract
AIM This work aimed to encapsulate Hypericum perforatum extract (HPE) into nanophytosomes (NPs) and assess the therapeutic efficacy of this nanocarrier in neuropathic pain induced by partial sciatic nerve ligation (PSNL). METHODS Hydroalcoholic extract of Hypericum perforatum was prepared and encapsulated into NPs by thin layer hydration method. Particle size, zeta potential, TEM, differential scanning calorimetry (DSC), entrapment efficiency (%EE), and loading capacity (LC) of NPs were reported. The biochemical and histopathological examinations were measured in the sciatic nerve. RESULTS Particle size, zeta potential, %EE, and LC were 104.7 ± 1.529 nm, -8.93 ± 1.71 mV, 87.23 ± 1.3%, and 53.12 ± 1.7%, respectively. TEM revealed well-formed and distinct vesicles. NPHPE (NPs of HPE) was significantly more effective than HPE in reducing PSNL-inducing pain. Antioxidant levels and sciatic nerve histology were reversed to normal with NPHPE. CONCLUSIONS This study demonstrates that encapsulating HPE with phytosomes is an effective therapeutic approach for neuropathic pain.
Collapse
Affiliation(s)
- Radha Goel
- Lloyd Institute of Management & Technology, Greater Noida, India
| | - Nitin Kumar
- Department of Pharmacy, Meerut Institute of Technology, Meerut, India
| | - Neelam Singh
- Department of Pharmaceutics, I.T.S. College of Pharmacy, Muradnagar, India
| | - Rosaline Mishra
- Department of Pharmachemistry, Metro College of Health Sciences and Research, Greater Noida, India
| |
Collapse
|
28
|
Bushnell MC, Ren K, Sessle BJ. In memoriam. Ronald Dubner: 1934 to 2023. Pain 2023; 164:1931-1934. [PMID: 37433177 DOI: 10.1097/j.pain.0000000000002983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Affiliation(s)
| | - Ke Ren
- Department of Neural and Pain Sciences, University of Maryland Dental School, Baltimore, MD, United States
| | - Barry J Sessle
- Faculty of Dentistry, Department of Physiology Faculty of Medicine, and Centre for the Study of Pain, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
29
|
Balog BM, Sonti A, Zigmond RE. Neutrophil biology in injuries and diseases of the central and peripheral nervous systems. Prog Neurobiol 2023; 228:102488. [PMID: 37355220 PMCID: PMC10528432 DOI: 10.1016/j.pneurobio.2023.102488] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 05/24/2023] [Accepted: 06/16/2023] [Indexed: 06/26/2023]
Abstract
The role of inflammation in nervous system injury and disease is attracting increased attention. Much of that research has focused on microglia in the central nervous system (CNS) and macrophages in the peripheral nervous system (PNS). Much less attention has been paid to the roles played by neutrophils. Neutrophils are part of the granulocyte subtype of myeloid cells. These cells, like macrophages, originate and differentiate in the bone marrow from which they enter the circulation. After tissue damage or infection, neutrophils are the first immune cells to infiltrate into tissues and are directed there by specific chemokines, which act on chemokine receptors on neutrophils. We have reviewed here the basic biology of these cells, including their differentiation, the types of granules they contain, the chemokines that act on them, the subpopulations of neutrophils that exist, and their functions. We also discuss tools available for identification and further study of neutrophils. We then turn to a review of what is known about the role of neutrophils in CNS and PNS diseases and injury, including stroke, Alzheimer's disease, multiple sclerosis, amyotrophic lateral sclerosis, spinal cord and traumatic brain injuries, CNS and PNS axon regeneration, and neuropathic pain. While in the past studies have focused on neutrophils deleterious effects, we will highlight new findings about their benefits. Studies on their actions should lead to identification of ways to modify neutrophil effects to improve health.
Collapse
Affiliation(s)
- Brian M Balog
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106-4975, USA
| | - Anisha Sonti
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106-4975, USA
| | - Richard E Zigmond
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106-4975, USA.
| |
Collapse
|
30
|
Essmat N, Galambos AR, Lakatos PP, Karádi DÁ, Mohammadzadeh A, Abbood SK, Geda O, Laufer R, Király K, Riba P, Zádori ZS, Szökő É, Tábi T, Al-Khrasani M. Pregabalin-Tolperisone Combination to Treat Neuropathic Pain: Improved Analgesia and Reduced Side Effects in Rats. Pharmaceuticals (Basel) 2023; 16:1115. [PMID: 37631030 PMCID: PMC10459435 DOI: 10.3390/ph16081115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
The current treatment of neuropathic pain (NP) is unsatisfactory; therefore, effective novel agents or combination-based analgesic therapies are needed. Herein, oral tolperisone, pregabalin, and duloxetine were tested for their antinociceptive effect against rat partial sciatic nerve ligation (pSNL)-induced tactile allodynia described by a decrease in the paw withdrawal threshold (PWT) measured by a dynamic plantar aesthesiometer. On day 7 after the operation, PWTs were assessed at 60, 120, and 180 min post-treatment. Chronic treatment was continued for 2 weeks, and again, PWTs were measured on day 14 and 21. None of the test compounds produced an acute antiallodynic effect. In contrast, after chronic treatment, tolperisone and pregabalin alleviated allodynia. In other experiments, on day 14, the acute antiallodynic effect of the tolperisone/pregabalin or duloxetine combination was measured. As a novel finding, a single dose of the tolperisone/pregabalin combination could remarkably alleviate allodynia acutely. It also restored the neuropathy-induced elevated CSF glutamate content. Furthermore, the combination is devoid of adverse effects related to motor and gastrointestinal transit functions. Tolperisone and pregabalin target voltage-gated sodium and calcium channels, respectively. The dual blockade effect of the combination might explain its advantageous acute analgesic effect in the present work.
Collapse
Affiliation(s)
- Nariman Essmat
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Anna Rita Galambos
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Péter P. Lakatos
- Department of Pharmacodynamics, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (P.P.L.); (O.G.); (R.L.); (É.S.)
| | - Dávid Árpád Karádi
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Amir Mohammadzadeh
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Sarah Kadhim Abbood
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Orsolya Geda
- Department of Pharmacodynamics, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (P.P.L.); (O.G.); (R.L.); (É.S.)
| | - Rudolf Laufer
- Department of Pharmacodynamics, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (P.P.L.); (O.G.); (R.L.); (É.S.)
| | - Kornél Király
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Pál Riba
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Zoltán S. Zádori
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| | - Éva Szökő
- Department of Pharmacodynamics, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (P.P.L.); (O.G.); (R.L.); (É.S.)
| | - Tamás Tábi
- Department of Pharmacodynamics, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (P.P.L.); (O.G.); (R.L.); (É.S.)
| | - Mahmoud Al-Khrasani
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary; (N.E.); (A.R.G.); (D.Á.K.); (A.M.); (S.K.A.); (K.K.); (P.R.); (Z.S.Z.)
| |
Collapse
|
31
|
Senba E, Kami K. Exercise therapy for chronic pain: How does exercise change the limbic brain function? NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2023; 14:100143. [PMID: 38099274 PMCID: PMC10719519 DOI: 10.1016/j.ynpai.2023.100143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 12/17/2023]
Abstract
We are exposed to various external and internal threats which might hurt us. The role of taking flexible and appropriate actions against threats is played by "the limbic system" and at the heart of it there is the ventral tegmental area and nucleus accumbens (brain reward system). Pain-related fear causes excessive excitation of amygdala, which in turn causes the suppression of medial prefrontal cortex, leading to chronification of pain. Since the limbic system of chronic pain patients is functionally impaired, they are maladaptive to their situations, unable to take goal-directed behavior and are easily caught by fear-avoidance thinking. We describe the neural mechanisms how exercise activates the brain reward system and enables chronic pain patients to take goal-directed behavior and overcome fear-avoidance thinking. A key to getting out from chronic pain state is to take advantage of the behavioral switching function of the basal nucleus of amygdala. We show that exercise activates positive neurons in this nucleus which project to the nucleus accumbens and promote reward behavior. We also describe fear conditioning and extinction are affected by exercise. In chronic pain patients, the fear response to pain is enhanced and the extinction of fear memories is impaired, so it is difficult to get out of "fear-avoidance thinking". Prolonged avoidance of movement and physical inactivity exacerbate pain and have detrimental effects on the musculoskeletal and cardiovascular systems. Based on the recent findings on multiple bran networks, we propose a well-balanced exercise prescription considering the adherence and pacing of exercise practice. We conclude that therapies targeting the mesocortico-limbic system, such as exercise therapy and cognitive behavioral therapy, may become promising tools in the fight against chronic pain.
Collapse
Affiliation(s)
- Emiko Senba
- Department of Physical Therapy, Osaka Yukioka College of Health Science, 1-1-41 Sojiji, Ibaraki-City, Osaka 567-0801, Japan
- Department of Rehabilitation Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8509, Japan
| | - Katsuya Kami
- Department of Rehabilitation, Wakayama Faculty of Health Care Sciences, Takarazuka University of Medical and Health Care, 2252 Nakanoshima, Wakayama City, Wakayama 640-8392, Japan
- Department of Rehabilitation Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8509, Japan
| |
Collapse
|
32
|
Xu XD, Lin L, Qiu YB, Zeng BW, Chen Y, Liu JL, Ye CH, Wang JL, Liu PC, Zhang LC. Ultrasonic visualization technique for anatomical and functional analyses of the sciatic nerve in rats. Front Neurosci 2023; 17:1187669. [PMID: 37456994 PMCID: PMC10339105 DOI: 10.3389/fnins.2023.1187669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/01/2023] [Indexed: 07/18/2023] Open
Abstract
Background and objective Ultrasound has been widely used in the diagnosis and minimally invasive treatment of peripheral nerve diseases in the clinic, but there is still a lack of feasibility analysis in rodent models of neurological disease. The purpose of this study was to investigate the changes in the cross-sectional area of the sciatic nerve of different genders and body weights and to explore the effectiveness and reliability of an ultrasound-guided block around the sciatic nerve in living rats. Methods Using ultrasound imaging anatomy of the sciatic nerve of rats, the cross-sectional area of the sciatic nerve in rats of different genders from 6 to 10 weeks old was calculated, and then analyzed its correlation with body weight. Further analyses were conducted through behavioral and cadaveric studies to evaluate the feasibility of ultrasound-guided perineural injection of the sciatic nerve in rats. Results We first reported that the sciatic nerve cross-sectional area of rats was increased with age (F = 89.169, P < 0.001), males had a higher sciatic nerve cross-sectional area than females (F = 60.770, P < 0.001), and there was a positive correlation with body weight (rMale = 0.8976, P < 0.001; rFemale = 0.7733, P < 0.001). Behavioral observation of rats showed that the lower extremity complete block rate was 80% following the administration of drugs around the sciatic nerve under ultrasound guidance and staining with methylene blue occurred in all sciatic nerves and surrounding muscles and fascia using 20 ultrasound-guided injections. Conclusions Ultrasound visualization technology can be used as a new auxiliary evaluation and intervention therapy for animal models of peripheral nerve injury, and will provide overwhelming new references for the basic research of neurological diseases.
Collapse
Affiliation(s)
- Xiao-Dong Xu
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Lei Lin
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yu-Bei Qiu
- School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Bang-Wei Zeng
- Administration Department of Nosocomial Infection, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ye Chen
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Jun-Le Liu
- Department of Anesthesiology, Xiamen Third Hospital, Xiamen, China
| | - Cai-Hong Ye
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Jia-Li Wang
- The Graduate School of Fujian Medical University, Fuzhou, China
| | - Pei-Chang Liu
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Liang-Cheng Zhang
- Department of Anesthesiology, Fujian Medical University Union Hospital, Fuzhou, China
| |
Collapse
|
33
|
Karanjule N, Hayashi N, Suzuki S, Tsuda T, Tokumaru E, Tanaka K, Kimoto H, Domon Y, Takahashi S, Kubota K, Kitano Y, Yokoyama T, Koishi R, Fujiwara C, Inaba S, Asano D, Sakakura T, Takasuna K, Shinozuka T. N-Aryl Indoles as a Novel Class of Potent Na V1.7 Inhibitors. ACS Med Chem Lett 2023; 14:788-793. [PMID: 37312847 PMCID: PMC10258897 DOI: 10.1021/acsmedchemlett.3c00079] [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: 03/06/2023] [Accepted: 05/18/2023] [Indexed: 06/15/2023] Open
Abstract
A novel class of potent NaV1.7 inhibitors has been discovered. The replacement of diaryl ether in compound I was investigated to enhance mouse NaV1.7 inhibitory activity, which resulted in the discovery of N-aryl indoles. The introduction of the 3-methyl group is crucial for high NaV1.7 in vitro potency. The adjustment of lipophilicity led to the discovery of 2e. Compound 2e (DS43260857) demonstrated high in vitro potencies against both human and mouse NaV1.7 with high selectivity over NaV1.1, NaV1.5, and hERG. In vivo evaluations revealed 2e demonstrating potent efficacy in PSL mice with excellent pharmacokinetics.
Collapse
Affiliation(s)
- Narayan Karanjule
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Noriyuki Hayashi
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Sayaka Suzuki
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Toshifumi Tsuda
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Eri Tokumaru
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Kyosuke Tanaka
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Hiroko Kimoto
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Yuki Domon
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Sakiko Takahashi
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Kazufumi Kubota
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Yutaka Kitano
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Tomihisa Yokoyama
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Ryuta Koishi
- Daiichi
Sankyo RD Novare Co., Ltd., 1-16-13, Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan
| | - Chie Fujiwara
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Shinichi Inaba
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Daigo Asano
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Tomoko Sakakura
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Kiyoshi Takasuna
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Tsuyoshi Shinozuka
- Daiichi
Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| |
Collapse
|
34
|
Nieto-Rostro M, Patel R, Dickenson AH, Dolphin AC. Nerve injury increases native Ca V 2.2 trafficking in dorsal root ganglion mechanoreceptors. Pain 2023; 164:1264-1279. [PMID: 36524581 PMCID: PMC10184561 DOI: 10.1097/j.pain.0000000000002846] [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: 10/04/2022] [Revised: 11/16/2022] [Accepted: 11/23/2022] [Indexed: 12/23/2022]
Abstract
ABSTRACT Neuronal N-type (Ca V 2.2) voltage-gated calcium channels are essential for neurotransmission from primary afferent terminals in the dorsal horn. In this study, we have used a knockin mouse containing Ca V 2.2 with an inserted extracellular hemagglutinin tag (Ca V 2.2_HA), to visualise the pattern of expression of endogenous Ca V 2.2 in dorsal root ganglion (DRG) neurons and their primary afferents in the dorsal horn. We examined the effect of partial sciatic nerve ligation (PSNL) and found an increase in Ca V 2.2_HA only in large and medium dorsal root ganglion neurons and also in deep dorsal horn synaptic terminals. Furthermore, there is a parallel increase in coexpression with GFRα1, present in a population of low threshold mechanoreceptors, both in large DRG neurons and in their terminals. The increased expression of Ca V 2.2_HA in these DRG neurons and their terminals is dependent on the presence of the auxiliary subunit α 2 δ-1, which is required for channel trafficking to the cell surface and to synaptic terminals, and it likely contributes to enhanced synaptic transmission at these synapses following PSNL. By contrast, the increase in GFRα1 is not altered in α 2 δ-1-knockout mice. We also found that following PSNL, there is patchy loss of glomerular synapses immunoreactive for Ca V 2.2_HA and CGRP or IB4, restricted to the superficial layers of the dorsal horn. This reduction is not dependent on α 2 δ-1 and likely reflects partial deafferentation of C-nociceptor presynaptic terminals. Therefore, in this pain model, we can distinguish 2 different events affecting specific DRG terminals, with opposite consequences for Ca V 2.2_HA expression and function in the dorsal horn.
Collapse
Affiliation(s)
- Manuela Nieto-Rostro
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Ryan Patel
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Anthony H. Dickenson
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Annette C. Dolphin
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| |
Collapse
|
35
|
Wu XQ, Tan B, Du Y, Yang L, Hu TT, Ding YL, Qiu XY, Moutal A, Khanna R, Yu J, Chen Z. Glutamatergic and GABAergic neurons in the vLGN mediate the nociceptive effects of green and red light on neuropathic pain. Neurobiol Dis 2023; 183:106164. [PMID: 37217103 DOI: 10.1016/j.nbd.2023.106164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 05/24/2023] Open
Abstract
Phototherapy is an emerging non-pharmacological treatment for depression, circadian rhythm disruptions, and neurodegeneration, as well as pain conditions including migraine and fibromyalgia. However, the mechanism of phototherapy-induced antinociception is not well understood. Here, using fiber photometry recordings of population-level neural activity combined with chemogenetics, we found that phototherapy elicits antinociception via regulation of the ventral lateral geniculate body (vLGN) located in the visual system. Specifically, both green and red lights caused an increase of c-fos in vLGN, with red light increased more. In vLGN, green light causes a large increase in glutamatergic neurons, whereas red light causes a large increase in GABAergic neurons. Green light preconditioning increases the sensitivity of glutamatergic neurons to noxious stimuli in vLGN of PSL mice. Green light produces antinociception by activating glutamatergic neurons in vLGN, and red light promotes nociception by activating GABAergic neurons in vLGN. Together, these results demonstrate that different colors of light exert different pain modulation effects by regulating glutamatergic and GABAergic subpopulations in the vLGN. This may provide potential new therapeutic strategies and new therapeutic targets for the precise clinical treatment of neuropathic pain.
Collapse
Affiliation(s)
- Xue-Qing Wu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Bei Tan
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Yu Du
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Lin Yang
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Ting-Ting Hu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Yi-La Ding
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Xiao-Yun Qiu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China
| | - Aubin Moutal
- Department of Pharmacology and Physiology, School of Medicine, St. Louis University, St. Louis, MO, USA
| | - Rajesh Khanna
- Department of Molecular Pathobiology, College of Dentistry, and NYU Pain Research Center, New York University, New York, NY 10010, USA.
| | - Jie Yu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China.
| | - Zhong Chen
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Basic Medical Science, College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310058, China.
| |
Collapse
|
36
|
Cuevas-Diaz Duran R, Li Y, Garza Carbajal A, You Y, Dessauer CW, Wu J, Walters ET. Major Differences in Transcriptional Alterations in Dorsal Root Ganglia Between Spinal Cord Injury and Peripheral Neuropathic Pain Models. J Neurotrauma 2023; 40:883-900. [PMID: 36178348 PMCID: PMC10150729 DOI: 10.1089/neu.2022.0238] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Chronic, often intractable, pain is caused by neuropathic conditions such as traumatic peripheral nerve injury (PNI) and spinal cord injury (SCI). These conditions are associated with alterations in gene and protein expression correlated with functional changes in somatosensory neurons having cell bodies in dorsal root ganglia (DRGs). Most studies of DRG transcriptional alterations have utilized PNI models where axotomy-induced changes important for neural regeneration may overshadow changes that drive neuropathic pain. Both PNI and SCI produce DRG neuron hyperexcitability linked to pain, but contusive SCI produces little peripheral axotomy or peripheral nerve inflammation. Thus, comparison of transcriptional signatures of DRGs across PNI and SCI models may highlight pain-associated transcriptional alterations in sensory ganglia that do not depend on peripheral axotomy or associated effects such as peripheral Wallerian degeneration. Data from our rat thoracic SCI experiments were combined with meta-analysis of published whole-DRG RNA-seq datasets from prominent rat PNI models. Striking differences were found between transcriptional responses to PNI and SCI, especially in regeneration-associated genes (RAGs) and long noncoding RNAs (lncRNAs). Many transcriptomic changes after SCI also were found after corresponding sham surgery, indicating they were caused by injury to surrounding tissue, including bone and muscle, rather than to the spinal cord itself. Another unexpected finding was of few transcriptomic similarities between rat neuropathic pain models and the only reported transcriptional analysis of human DRGs linked to neuropathic pain. These findings show that DRGs exhibit complex transcriptional responses to central and peripheral neural injury and associated tissue damage. Although only a few genes in DRG cells exhibited similar changes in expression across all the painful conditions examined here, these genes may represent a core set whose transcription in various DRG cell types is sensitive to significant bodily injury, and which may play a fundamental role in promoting neuropathic pain.
Collapse
Affiliation(s)
- Raquel Cuevas-Diaz Duran
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, Mexico
| | - Yong Li
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Anibal Garza Carbajal
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Yanan You
- Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA
- Center for Stem Cell and Regenerative Medicine, UT Brown Foundation Institute of Molecular Medicine, Houston, Texas, USA
| | - Carmen W. Dessauer
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Jiaqian Wu
- Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA
- Center for Stem Cell and Regenerative Medicine, UT Brown Foundation Institute of Molecular Medicine, Houston, Texas, USA
| | - Edgar T. Walters
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| |
Collapse
|
37
|
Karádi DÁ, Galambos AR, Lakatos PP, Apenberg J, Abbood SK, Balogh M, Király K, Riba P, Essmat N, Szűcs E, Benyhe S, Varga ZV, Szökő É, Tábi T, Al-Khrasani M. Telmisartan Is a Promising Agent for Managing Neuropathic Pain and Delaying Opioid Analgesic Tolerance in Rats. Int J Mol Sci 2023; 24:7970. [PMID: 37175678 PMCID: PMC10178315 DOI: 10.3390/ijms24097970] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Despite the large arsenal of analgesic medications, neuropathic pain (NP) management is not solved yet. Angiotensin II receptor type 1 (AT1) has been identified as a potential target in NP therapy. Here, we investigate the antiallodynic effect of AT1 blockers telmisartan and losartan, and particularly their combination with morphine on rat mononeuropathic pain following acute or chronic oral administration. The impact of telmisartan on morphine analgesic tolerance was also assessed using the rat tail-flick assay. Morphine potency and efficacy in spinal cord samples of treated neuropathic animals were assessed by [35S]GTPγS-binding assay. Finally, the glutamate content of the cerebrospinal fluid (CSF) was measured by capillary electrophoresis. Oral telmisartan or losartan in higher doses showed an acute antiallodynic effect. In the chronic treatment study, the combination of subanalgesic doses of telmisartan and morphine ameliorated allodynia and resulted in a leftward shift in the dose-response curve of morphine in the [35S]GTPγS binding assay and increased CSF glutamate content. Telmisartan delayed morphine analgesic-tolerance development. Our study has identified a promising combination therapy composed of telmisartan and morphine for NP and opioid tolerance. Since telmisartan is an inhibitor of AT1 and activator of PPAR-γ, future studies are needed to analyze the effect of each component.
Collapse
Affiliation(s)
- David Á. Karádi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Anna Rita Galambos
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Péter P. Lakatos
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (P.P.L.); (É.S.); (T.T.)
| | - Joost Apenberg
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Sarah K. Abbood
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Mihály Balogh
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
- Pharmaceutical Analysis, Groningen Research Institute of Pharmacy, Faculty of Science and Engineering, University of Groningen, 9700 AD Groningen, The Netherlands
| | - Kornél Király
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Pál Riba
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Nariman Essmat
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Edina Szűcs
- Biological Research Center, Institute of Biochemistry, Temesvári krt. 62, H-6726 Szeged, Hungary; (E.S.); (S.B.)
| | - Sándor Benyhe
- Biological Research Center, Institute of Biochemistry, Temesvári krt. 62, H-6726 Szeged, Hungary; (E.S.); (S.B.)
| | - Zoltán V. Varga
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| | - Éva Szökő
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (P.P.L.); (É.S.); (T.T.)
| | - Tamás Tábi
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (P.P.L.); (É.S.); (T.T.)
| | - Mahmoud Al-Khrasani
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.Á.K.); (A.R.G.); (J.A.); (S.K.A.); (M.B.); (K.K.); (P.R.); (N.E.); (Z.V.V.)
| |
Collapse
|
38
|
Kumar N, Goel R, Singh M, Sharma NK, Gaur PK, Sharma PK. Development and evaluation of Hedyotis corymbosa (L.) extract containing phytosomes: a preclinical approach for treatment of neuropathic pain in rodent model. J Microencapsul 2023; 40:186-196. [PMID: 36880280 DOI: 10.1080/02652048.2023.2188938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
PURPOSE The study was aimed to encapsulate Hedyotis corymbosa extract (HCE) into phytosomes to improve its therapeutic efficacy in neuropathic pain by enhancing the bioavailability of chief chemical constituent Hedycoryside -A (HCA). METHODS For preparing phytosomes complexes (F1, F2, and F3), HCE and phospholipids were reacted in disparate ratio. F2 was chosen to assess its therapeutic efficacy in neuropathic pain induced by partial sciatic nerve ligation. Nociceptive threshold and oral bioavailability were also estimated for F2. RESULTS Particle size, zeta potential and entrapment efficiency for F2 were analysed as 298.1 ± 1.1 nm, -3.92 ± 0.41 mV and 72.12 ± 0.72% respectively. F2 gave enhanced relative bioavailability (158.92%) of HCA along with a greater neuroprotective potential showing a significant antioxidant effect and augmentation (p < 0.05) in nociceptive threshold with the diminution in damage to nerves. CONCLUSION F2 is an optimistic formulation for enhancing the HCE delivery for the effective treatment of neuropathic pain.
Collapse
Affiliation(s)
- Nitin Kumar
- Department of Pharmacy, Meerut Institute of Technology, Meerut, India
| | - Radha Goel
- Department of Pharmacology, Lloyd Institute of Management and Technology, Greater Noida, India
| | - Monika Singh
- Department of Pharmacology, I.T.S College of Pharmacy, Ghaziabad, India
| | | | - Praveen Kumar Gaur
- Department of Pharmaceutics, Metro College of Health Sciences & Research, Greater Noida, India
| | | |
Collapse
|
39
|
Hammad ASA, Sayed-Ahmed MM, Abdel Hafez SMN, Ibrahim ARN, Khalifa MMA, El-Daly M. Trimetazidine alleviates paclitaxel-induced peripheral neuropathy through modulation of TLR4/p38/NFκB and klotho protein expression. Chem Biol Interact 2023; 376:110446. [PMID: 36898573 DOI: 10.1016/j.cbi.2023.110446] [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: 01/12/2023] [Revised: 02/27/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
Chemotherapy-induced peripheral neuropathy is a common adverse effect associated with a number of chemotherapeutic agents including paclitaxel (PTX) which is commonly used in a wide range of solid tumors. Development of PTX-induced peripheral neuropathy (PIPN) during cancer treatment requires dose reduction which limits its clinical benefits. This study is conducted to investigate the role of toll like receptor-4 (TLR4) and p38 signaling and Klotho protein expression in PIPN and the role of Trimetazidine (TMZ) in this pathway. Sixty-four male Swiss albino mice were divided into 4 groups (n = 16); Group (1) injected intraperitoneally (IP) with ethanol/tween 80/saline for 8 successive days. Group (2) received TMZ (5 mg/kg, IP, day) for 8 successive days. Group (3) treated with 4 doses of PTX (4.5 mg/kg, IP) every other day over a period of 8 days. Group (4) received a combination of TMZ as group 2 and PTX as group 3. The Effect of TMZ on the antitumor activity of PTX was studied in another set of mice-bearing Solid Ehrlich Carcinoma (SEC) that was similarly divided as the above-mentioned set. TMZ mitigated tactile allodynia, thermal hypoalgesia, numbness and fine motor dyscoordination associated with PTX in Swiss mice. The results of the current study show that the neuroprotective effect of TMZ can be attributed to inhibition of TLR4/p38 signaling which also includes a reduction in matrix metalloproteinase-9 (MMP9) protein levels as well as the proinflammatory interleukin-1β (IL-1β) and preserving the levels of the anti-inflammatory IL-10. Moreover, the current study is the first to demonstrate that PTX reduces the neuronal levels of klotho protein and showed its modulation via cotreatment with TMZ. In addition, this study showed that TMZ neither alter the growth of SEC nor the antitumor activity of PTX. In conclusion, we suggest that (1) Inhibition of Klotho protein and upregulation of TLR4/p38 signals in nerve tissues may contribute to PIPN. (2) TMZ attenuates PIPN by modulating TLR4/p38 and Klotho protein expression in without interfering with its antitumor activity.
Collapse
Affiliation(s)
- Asmaa S A Hammad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minia, 61511, Egypt.
| | - Mohamed M Sayed-Ahmed
- Pharmacology and Experimental Oncology Unit, National Cancer Institute, Cairo University, Cairo, 11796, Egypt
| | - Sara M N Abdel Hafez
- Department of Histology and Cell Biology, Faculty of Medicine, Minia University, Minia, 61511, Egypt
| | - Ahmed R N Ibrahim
- Clinical Pharmacy Department, College of Pharmacy, King Khalid University, Abha, 61441, Saudi Arabia; Department of Biochemistry, Faculty of Pharmacy, Minia University, Minia, 61511, Egypt
| | - Mohamed M A Khalifa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minia, 61511, Egypt
| | - Mahmoud El-Daly
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Minia University, Minia, 61511, Egypt
| |
Collapse
|
40
|
Ito H, Navratilova E, Vagnerova B, Watanabe M, Kopruszinski C, Moreira de Souza LH, Yue X, Ikegami D, Moutal A, Patwardhan A, Khanna R, Yamazaki M, Guerrero M, Rosen H, Roberts E, Neugebauer V, Dodick DW, Porreca F. Chronic pain recruits hypothalamic dynorphin/kappa opioid receptor signalling to promote wakefulness and vigilance. Brain 2023; 146:1186-1199. [PMID: 35485490 PMCID: PMC10169443 DOI: 10.1093/brain/awac153] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/08/2022] [Accepted: 03/31/2022] [Indexed: 11/13/2022] Open
Abstract
Increased vigilance in settings of potential threats or in states of vulnerability related to pain is important for survival. Pain disrupts sleep and conversely, sleep disruption enhances pain, but the underlying mechanisms remain unknown. Chronic pain engages brain stress circuits and increases secretion of dynorphin, an endogenous ligand of the kappa opioid receptor (KOR). We therefore hypothesized that hypothalamic dynorphin/KOR signalling may be a previously unknown mechanism that is recruited in pathological conditions requiring increased vigilance. We investigated the role of KOR in wakefulness, non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep in freely moving naïve mice and in mice with neuropathic pain induced by partial sciatic nerve ligation using EEG/EMG recordings. Systemic continuous administration of U69,593, a KOR agonist, over 5 days through an osmotic minipump decreased the amount of NREM and REM sleep and increased sleep fragmentation in naïve mice throughout the light-dark sleep cycle. We used KORcre mice to selectively express a Gi-coupled designer receptor activated by designer drugs (Gi-DREADD) in KORcre neurons of the hypothalamic paraventricular nucleus, a key node of the hypothalamic-pituitary-adrenal stress response. Sustained activation of Gi-DREADD with clozapine-N-oxide delivered in drinking water over 4 days, disrupted sleep in these mice in a similar way as systemic U69,593. Mice with chronic neuropathic pain also showed disrupted NREM and total sleep that was normalized by systemic administration of two structurally different KOR antagonists, norbinaltorphimine and NMRA-140, currently in phase II clinical development, or by CRISPR/Cas9 editing of paraventricular nucleus KOR, consistent with endogenous KOR activation disrupting sleep in chronic pain. Unexpectedly, REM sleep was diminished by either systemic KOR antagonist or by CRISPR/Cas9 editing of paraventricular nucleus KOR in sham-operated mice. Our findings reveal previously unknown physiological and pathophysiological roles of dynorphin/KOR in eliciting arousal. Physiologically, dynorphin/KOR signalling affects transitions between sleep stages that promote REM sleep. Furthermore, while KOR antagonists do not promote somnolence in the absence of pain, they normalized disrupted sleep in chronic pain, revealing a pathophysiological role of KOR signalling that is selectively recruited to promote vigilance, increasing chances of survival. Notably, while this mechanism is likely beneficial in the short-term, disruption of the homeostatic need for sleep over longer periods may become maladaptive resulting in sustained pain chronicity. A novel approach for treatment of chronic pain may thus result from normalization of chronic pain-related sleep disruption by KOR antagonism.
Collapse
Affiliation(s)
- Hisakatsu Ito
- Department of Pharmacology, University of Arizona, Tucson, USA
- Department of Anesthesiology, University of Toyama, Toyama, Japan
| | - Edita Navratilova
- Department of Pharmacology, University of Arizona, Tucson, USA
- Department of Collaborative Research, Mayo Clinic, Scottsdale, USA
| | | | - Moe Watanabe
- Department of Pharmacology, University of Arizona, Tucson, USA
| | | | | | - Xu Yue
- Department of Pharmacology, University of Arizona, Tucson, USA
| | - Daigo Ikegami
- Department of Pharmacology, University of Arizona, Tucson, USA
| | - Aubin Moutal
- Department of Pharmacology, University of Arizona, Tucson, USA
| | - Amol Patwardhan
- Department of Pharmacology, University of Arizona, Tucson, USA
| | - Rajesh Khanna
- Department of Pharmacology, University of Arizona, Tucson, USA
| | | | - Miguel Guerrero
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, USA
| | - Hugh Rosen
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, USA
| | - Ed Roberts
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, USA
| | - Volker Neugebauer
- Department of Pharmacology and Neuroscience and Garrison Institute on Aging, Texas Tech University Health Sciences Center, Lubbock, USA
| | | | - Frank Porreca
- Department of Pharmacology, University of Arizona, Tucson, USA
- Department of Collaborative Research, Mayo Clinic, Scottsdale, USA
| |
Collapse
|
41
|
Minami K, Kami K, Nishimura Y, Kawanishi M, Imashiro K, Kami T, Habata S, Senba E, Umemoto Y, Tajima F. Voluntary running-induced activation of ventral hippocampal GABAergic interneurons contributes to exercise-induced hypoalgesia in neuropathic pain model mice. Sci Rep 2023; 13:2645. [PMID: 36788313 PMCID: PMC9929335 DOI: 10.1038/s41598-023-29849-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
The exact mechanism of exercise-induced hypoalgesia (EIH) in exercise therapy to improve chronic pain has not been fully clarified. Recent studies have suggested the importance of the ventral hippocampus (vHPC) in inducing chronic pain. We investigated the effects of voluntary running (VR) on FosB+ cells and GABAergic interneurons (parvalbumin-positive [PV+] and somatostatin-positive [SOM+]) in the vHPC-CA1 in neuropathic pain (NPP) model mice. VR significantly improved thermal hyperalgesia in the NPP model. The number of the FosB+ cells was significantly higher in partial sciatic nerve ligation-sedentary mice than in Sham and Naive mice, whereas VR significantly suppressed the FosB+ cells in the vHPC-CA1. Furthermore, VR significantly increased the proportion of activated PV+ and SOM+ interneurons in the vHPC-CA1, and tracer experiments indicated that approximately 24% of neurons projecting from the vHPC-CA1 to the basolateral nucleus of amygdala were activated in NPP mice. These results indicate that feedforward suppression of the activated neurons via VR-induced activation of GABAergic interneurons in the vHPC-CA1 may be a mechanism to produce EIH effects, and suggested that disappearance of negative emotions such as fear and anxiety by VR may play a critical role in improving chronic pain.
Collapse
Affiliation(s)
- Kohei Minami
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| | - Katsuya Kami
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan.
- Department of Rehabilitation, Faculty of Wakayama Health Care Sciences, Takarazuka University of Medical and Health Care, Wakayama, Japan.
| | - Yukihide Nishimura
- Department of Rehabilitation Medicine, Iwate Medical University, Morioka, Japan
| | - Makoto Kawanishi
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| | - Kyosuke Imashiro
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| | - Takuma Kami
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shogo Habata
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| | - Emiko Senba
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
- Department of Physical Therapy, Osaka Yukioka College of Health Science, Ibaraki, Japan
| | - Yasunori Umemoto
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| | - Fumihiro Tajima
- Department of Rehabilitation Medicine, Wakayama Medical University, Wakayama, Japan
| |
Collapse
|
42
|
Unbiased proteomic analysis detects painful systemic inflammatory profile in the serum of nerve-injured mice. Pain 2023; 164:e77-e90. [PMID: 35587992 PMCID: PMC9833115 DOI: 10.1097/j.pain.0000000000002695] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/10/2022] [Indexed: 02/06/2023]
Abstract
ABSTRACT Neuropathic pain is a complex, debilitating disease that results from injury to the somatosensory nervous system. The presence of systemic chronic inflammation has been observed in patients with chronic pain but whether it plays a causative role remains unclear. This study aims to determine the perturbation of systemic homeostasis by an injury to peripheral nerve and its involvement in neuropathic pain. We assessed the proteomic profile in the serum of mice at 1 day and 1 month after partial sciatic nerve injury (PSNL) or sham surgery. We also assessed mouse mechanical and cold sensitivity in naïve mice after receiving intravenous administration of serum from PSNL or sham mice. Mass spectrometry-based proteomic analysis revealed that PSNL resulted in a long-lasting alteration of serum proteome, where most of the differentially expressed proteins were in inflammation-related pathways, involving cytokines and chemokines, autoantibodies, and complement factors. Although transferring sham serum to naïve mice did not change their pain sensitivity, PSNL serum significantly lowered mechanical thresholds and induced cold hypersensitivity in naïve mice. With broad anti-inflammatory properties, bone marrow cell extracts not only partially restored serum proteomic homeostasis but also significantly ameliorated PSNL-induced mechanical allodynia, and serum from bone marrow cell extracts-treated PSNL mice no longer induced hypersensitivity in naïve mice. These findings clearly demonstrate that nerve injury has a long-lasting impact on systemic homeostasis, and nerve injury-associated systemic inflammation contributes to the development of neuropathic pain.
Collapse
|
43
|
Astrocyte reactivity in the glia limitans superficialis of the rat medial prefrontal cortex following sciatic nerve injury. Histochem Cell Biol 2023; 159:185-198. [PMID: 36326875 DOI: 10.1007/s00418-022-02161-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2022] [Indexed: 11/06/2022]
Abstract
The glia limitans superficialis (GLS) on the rodent cortical surface consists of astrocyte bodies intermingled with their cytoplasmic processes. Many studies have observed astrocyte reactivity in the medial prefrontal cortex (mPFC) parenchyma induced by a peripheral nerve injury, while the response of GLS astrocytes is still not fully understood. The aim of our study was to identify the reactivity of rat GLS astrocytes in response to sciatic nerve compression (SNC) over different time periods. The alteration of GLS astrocyte reactivity was monitored using immunofluorescence (IF) intensities of glial fibrillary acidic protein (GFAP), glutamine synthetase (GS), and NFκBp65. Our results demonstrated that SNC induced GLS astrocyte reactivity seen as increased intensities of GFAP-IF, and longer extensions of cytoplasmic processes into lamina I. First significant increase of GFAP-IF was observed on post-operation day 7 (POD7) after SNC with further increases on POD14 and POD21. In contrast, dynamic alteration of the extension of cytoplasmic processes into lamina I was detected as early as POD1 and continued throughout the monitored survival periods of both sham and SNC operations. The reactivity of GLS astrocytes was not associated with their proliferation. In addition, GLS astrocytes also displayed a significant decrease in GS immunofluorescence (GS-IF) and NFκB immunofluorescence (NFκB-IF) in response to sham and SNC operation compared with naïve control rats. These results suggest that damaged peripheral tissues (following sham operation as well as peripheral nerve lesions) may induce significant changes in GLS astrocyte reactivity. The signaling mechanism from injured peripheral tissue and nerve remains to be elucidated.
Collapse
|
44
|
Natale CA, Christie MJ, Aubrey KR. Spinal glycinergic currents are reduced in a rat model of neuropathic pain following partial nerve ligation but not chronic constriction injury. J Neurophysiol 2023; 129:333-341. [PMID: 36541621 DOI: 10.1152/jn.00451.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Animal models have consistently indicated that central sensitization and the development of chronic neuropathic pain are linked to changes to inhibitory signaling in the dorsal horn of the spinal cord. However, replication of data investigating the cellular mechanisms that underlie these changes remains a challenge and there is still a lack of understanding about what aspects of spinal inhibitory transmission most strongly contribute to the disease. Here, we compared the effect of two different sciatic nerve injuries commonly used to generate rodent models of neuropathic pain on spinal glycinergic signaling. Using whole cell patch-clamp electrophysiology in spinal slices, we recorded from neurons in the lamina II of the dorsal horn and evoked inhibitory postsynaptic currents with a stimulator in lamina III, where glycinergic cell bodies are concentrated. We found that glycine inputs onto radial neurons were reduced following partial nerve ligation (PNL) of the sciatic nerve, consistent with a previous report. However, this finding was not replicated in animals that underwent chronic constriction injury (CCI) to the same nerve region. To limit the between-experiment variability, we kept the rat species, sex, and age consistent and had a single investigator carry out the surgeries. These data show that PNL and CCI cause divergent spinal signaling outcomes in the cord and add to the body of evidence suggesting that treatments for neuropathic pain should be triaged according to nerve injury or cellular dysfunction rather than the symptoms of the disease.NEW & NOTEWORTHY Neuropathic pain models are used in preclinical research to investigate the mechanisms underlying allodynia, a common symptom of neuropathic pain, and to test, develop, and validate therapies for persistent pain. We demonstrate that a glycinergic dysfunction is consistently associated with partial nerve ligation but not the chronic constriction injury model. This suggests that the cellular effects produced by each injury are distinct and that data from different neuropathic pain models should be considered separately.
Collapse
Affiliation(s)
- Claudia A Natale
- School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, Australia
| | - Macdonald J Christie
- School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, Australia
| | - Karin R Aubrey
- Pain Management Research, Kolling Institute, Royal North Shore Hospital, St Leonards, New South Wales, Australia.,Northern Clinical School, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, Australia
| |
Collapse
|
45
|
Goel R, Kumar N, Kumar Saxena P, Pratap Singh A, Bana S. Pitavastatin attenuates neuropathic pain induced by partial sciatic nerve in Wistar rats. J Pharm Pharmacol 2023; 75:66-75. [PMID: 36383203 DOI: 10.1093/jpp/rgac079] [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: 04/02/2022] [Accepted: 09/27/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Pitavastatin is a competitive HMG-CoA reductase inhibitor for lowering of cholesterol level and low density lipoprotein cholesterol. This study was designed to evaluate the effect of pitavastatin in neuropathic pain induced by partial sciatic nerve ligation along with neuronal changes in Wister rats. METHODS Pitavastatin was started three days prior to the surgery and continued for 14 days The pain was determined by thermal hyperalgesia and cold allodynia. The biochemical changes were estimated at the end of the study. The levels of cytokines were measured using an ELISA test. Western blot analysis was used to detect levels of expression of JNK, p-JNK, ERK, p-ERK, p38MAPK, p-p38MAPK. The sciatic nerve was investigated histopathologically. KEY FINDINGS Pitavastatin significantly ameliorated nerve pain induced by PSNL and also attenuated the biochemical changes in a dose-dependent manner. The levels of inflammatory mediators were inhibited by pitavastatin. There was significant improvement in sciatic nerve fibres histology. The levels of p-38, p-ERK, and p-JNK and their associated phosphorylated proteins were reduced after treatment with pitavastatin. CONCLUSION The present study indicates that treatment with pitavastatin reversed the PSNL-induced neuropathy in Wister rats and may be an additional therapeutic strategy in the management of neuropathic pain.
Collapse
Affiliation(s)
- Radha Goel
- Department of Pharmacology, I.T.S College of Pharmacy, Muradnagar, Ghaziabad, Uttar Pradesh, India
| | - Nitin Kumar
- Department of Pharmacognosy, IIMT College of Medical Science, IIMT University, Ghaziabad, Uttar Pradesh, India
| | - Prasoon Kumar Saxena
- Department of Pharmacognosy, SRM Modinagar College of Pharmacy, Modinagar, Ghaziabad, Uttar Pradesh, India
| | - Alok Pratap Singh
- Department of Pharmaceutics, SRM Modinagar College of Pharmacy, Modinagar, Ghaziabad, Uttar Pradesh, India
| | - Sweeti Bana
- Department of Pharmacology, I.T.S College of Pharmacy, Muradnagar, Ghaziabad, Uttar Pradesh, India
| |
Collapse
|
46
|
Kozsurek M, Király K, Gyimesi K, Lukácsi E, Fekete C, Gereben B, Mohácsik P, Helyes Z, Bölcskei K, Tékus V, Pap K, Szűcs E, Benyhe S, Imre T, Szabó P, Gajtkó A, Holló K, Puskár Z. Unique, Specific CART Receptor-Independent Regulatory Mechanism of CART(55-102) Peptide in Spinal Nociceptive Transmission and Its Relation to Dipeptidyl-Peptidase 4 (DDP4). Int J Mol Sci 2023; 24:ijms24020918. [PMID: 36674439 PMCID: PMC9865214 DOI: 10.3390/ijms24020918] [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: 08/31/2022] [Revised: 12/09/2022] [Accepted: 12/14/2022] [Indexed: 01/06/2023] Open
Abstract
Cocaine- and amphetamine-regulated transcript (CART) peptides are involved in several physiological and pathological processes, but their mechanism of action is unrevealed due to the lack of identified receptor(s). We provided evidence for the antihyperalgesic effect of CART(55-102) by inhibiting dipeptidyl-peptidase 4 (DPP4) in astrocytes and consequently reducing neuroinflammation in the rat spinal dorsal horn in a carrageenan-evoked inflammation model. Both naturally occurring CART(55-102) and CART(62-102) peptides are present in the spinal cord. CART(55-102) is not involved in acute nociception but regulates spinal pain transmission during peripheral inflammation. While the full-length peptide with a globular motif contributes to hyperalgesia, its N-terminal inhibits this process. Although the anti-hyperalgesic effects of CART(55-102), CART(55-76), and CART(62-76) are blocked by opioid receptor antagonists in our inflammatory models, but not in neuropathic Seltzer model, none of them bind to any opioid or G-protein coupled receptors. DPP4 interacts with Toll-like receptor 4 (TLR4) signalling in spinal astrocytes and enhances the TLR4-induced expression of interleukin-6 and tumour necrosis factor alpha contributing to inflammatory pain. Depending on the state of inflammation, CART(55-102) is processed in the spinal cord, resulting in the generation of biologically active isoleucine-proline-isoleucine (IPI) tripeptide, which inhibits DPP4, leading to significantly decreased glia-derived cytokine production and hyperalgesia.
Collapse
Affiliation(s)
- Márk Kozsurek
- Department of Anatomy, Histology and Embryology, Semmelweis University, H-1094 Budapest, Hungary
| | - Kornél Király
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, H-1089 Budapest, Hungary
| | - Klára Gyimesi
- Department of Anatomy, Histology and Embryology, Semmelweis University, H-1094 Budapest, Hungary
- Department of Anaesthesiology, Uzsoki Hospital, H-1145 Budapest, Hungary
| | - Erika Lukácsi
- Department of Anatomy, Histology and Embryology, Semmelweis University, H-1094 Budapest, Hungary
| | - Csaba Fekete
- Laboratory of Integrative Neuroendocrinology, Institute of Experimental Medicine, Eötvös Loránd Research Network, H-1083 Budapest, Hungary
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Tupper Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Balázs Gereben
- Laboratory of Integrative Neuroendocrinology, Institute of Experimental Medicine, Eötvös Loránd Research Network, H-1083 Budapest, Hungary
| | - Petra Mohácsik
- Laboratory of Integrative Neuroendocrinology, Institute of Experimental Medicine, Eötvös Loránd Research Network, H-1083 Budapest, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, H-7624 Pécs, Hungary
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
- Chronic Pain Research Group, Eötvös Loránd Research Network, H-7624 Pécs, Hungary
| | - Kata Bölcskei
- Department of Pharmacology and Pharmacotherapy, University of Pécs, H-7624 Pécs, Hungary
| | - Valéria Tékus
- Department of Pharmacology and Pharmacotherapy, University of Pécs, H-7624 Pécs, Hungary
- National Laboratory for Drug Research and Development, H-1117 Budapest, Hungary
| | - Károly Pap
- Department of Orthopaedics and Traumatology, Uzsoki Hospital, H-1145 Budapest, Hungary
| | - Edina Szűcs
- Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, H-6726 Szeged, Hungary
| | - Sándor Benyhe
- Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, H-6726 Szeged, Hungary
| | - Tímea Imre
- MS Metabolomics Laboratory, Instrumentation Centre, Research Centre for Natural Sciences, Eötvös Loránd Research Network, H-1117 Budapest, Hungary
| | - Pál Szabó
- MS Metabolomics Laboratory, Instrumentation Centre, Research Centre for Natural Sciences, Eötvös Loránd Research Network, H-1117 Budapest, Hungary
| | - Andrea Gajtkó
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Krisztina Holló
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Zita Puskár
- Department of Anatomy, Histology and Embryology, Semmelweis University, H-1094 Budapest, Hungary
- Correspondence:
| |
Collapse
|
47
|
Sharma KK, Fatima N, Ali Z, Moshin M, Chandra P, Verma A, Goshain O, Kumar G. Neuropathy, its Profile and Experimental Nerve Injury Neuropathic Pain Models: A Review. Curr Pharm Des 2023; 29:3343-3356. [PMID: 38058089 DOI: 10.2174/0113816128274200231128065425] [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: 08/11/2023] [Revised: 10/17/2023] [Accepted: 11/06/2023] [Indexed: 12/08/2023]
Abstract
Neuropathy is a terrible disorder that has a wide range of etiologies. Drug-induced neuropathy, which happens whenever a chemical agent damages the peripheral nerve system, has been linked here to the iatrogenic creation of some drugs. It is potentially permanent and causes sensory impairments and paresthesia that typically affects the hands, feet, and stockings; motor participation is uncommon. It might appear suddenly or over time, and the long-term outlook varies. The wide range of chronic pain conditions experienced by people has been one of the main obstacles to developing new, more effective medications for the treatment of neuropathic pain. Animal models can be used to examine various neuropathic pain etiologies and symptoms. Several models investigate the peripheral processes of neuropathic pain, whereas some even investigate the central mechanisms, such as drug induce models like vincristine, cisplatin, bortezomib, or thalidomide, etc., and surgical models like sciatic nerve chronic constriction injury (CCI), sciatic nerve ligation through spinal nerve ligation (SNL), sciatic nerve damage caused by a laser, SNI (spared nerve injury), etc. The more popular animal models relying on peripheral nerve ligatures are explained. In contrast to chronic sciatic nerve contraction, which results in behavioral symptoms of less reliable stressful neuropathies, (SNI) spared nerve injury generates behavioral irregularities that are more feasible over a longer period. This review summarizes the latest methods models as well as clinical ideas concerning this mechanism. Every strongest current information on neuropathy is discussed, along with several popular laboratory models for causing neuropathy.
Collapse
Affiliation(s)
- Krishana Kumar Sharma
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Nishat Fatima
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Zeeshan Ali
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Mohd Moshin
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Phool Chandra
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Anurag Verma
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Omprakash Goshain
- Department of Pharmacology, Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India
| | - Gajendra Kumar
- Department of Chemistry, Constituent Government College (M.J.P.R.U.), Hasanpur, Uttar Pradesh 244241, India
| |
Collapse
|
48
|
Yu X, Ton AN, Niu Z, Morales BM, Chen J, Braz J, Lai MH, Barruet E, Liu H, Cheung K, Ali S, Chan T, Bigay K, Ho J, Nikolli I, Hansberry S, Wentworth K, Kriegstein A, Basbaum A, Hsiao EC. ACVR1-activating mutation causes neuropathic pain and sensory neuron hyperexcitability in humans. Pain 2023; 164:43-58. [PMID: 35442931 PMCID: PMC9582048 DOI: 10.1097/j.pain.0000000000002656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 03/01/2022] [Accepted: 04/08/2022] [Indexed: 01/09/2023]
Abstract
ABSTRACT Altered bone morphogenetic protein (BMP) signaling is associated with many musculoskeletal diseases. However, it remains unknown whether BMP dysfunction has direct contribution to debilitating pain reported in many of these disorders. Here, we identified a novel neuropathic pain phenotype in patients with fibrodysplasia ossificans progressiva (FOP), a rare autosomal-dominant musculoskeletal disorder characterized by progressive heterotopic ossification. Ninety-seven percent of these patients carry an R206H gain-of-function point mutation in the BMP type I receptor ACVR1 (ACVR1 R206H ), which causes neofunction to Activin A and constitutively activates signaling through phosphorylated SMAD1/5/8. Although patients with FOP can harbor pathological lesions in the peripheral and central nervous system, their etiology and clinical impact are unclear. Quantitative sensory testing of patients with FOP revealed significant heat and mechanical pain hypersensitivity. Although there was no major effect of ACVR1 R206H on differentiation and maturation of nociceptive sensory neurons (iSNs) derived from FOP induced pluripotent stem cells, both intracellular and extracellular electrophysiology analyses of the ACVR1 R206H iSNs displayed ACVR1-dependent hyperexcitability, a hallmark of neuropathic pain. Consistent with this phenotype, we recorded enhanced responses of ACVR1 R206H iSNs to TRPV1 and TRPA1 agonists. Thus, activated ACVR1 signaling can modulate pain processing in humans and may represent a potential target for pain management in FOP and related BMP pathway diseases.
Collapse
Affiliation(s)
- Xiaobing Yu
- Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, CA, United States
| | - Amy N. Ton
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Zejun Niu
- Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, CA, United States
- Department of Anesthesiology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Blanca M. Morales
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Jiadong Chen
- Department of Neurology, University of California, San Francisco, CA, United States. Dr. Chen is now with the Department of Neurology of Second Affiliated Hospital, Centre for Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Joao Braz
- Department of Anatomy, University of California San Francisco, San Francisco, CA, United States
| | - Michael H. Lai
- J. David Gladstone Institutes, San Francisco, CA, United States
| | - Emilie Barruet
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Hongju Liu
- Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, CA, United States
- Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China
| | - Kin Cheung
- BioSAS Consulting, Inc, Wellesley, MA, United States
| | - Syed Ali
- Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, CA, United States
| | - Tea Chan
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Katherine Bigay
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Jennifer Ho
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Ina Nikolli
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Steven Hansberry
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
- California Institute of Regenerative Medicine Bridges to Stem Cell Research Program, San Francisco State University, San Francisco, CA, United States
| | - Kelly Wentworth
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| | - Arnold Kriegstein
- Department of Neurology, University of California, San Francisco, CA, United States. Dr. Chen is now with the Department of Neurology of Second Affiliated Hospital, Centre for Neuroscience, Zhejiang University School of Medicine, Hangzhou, China
| | - Allan Basbaum
- Department of Anatomy, University of California San Francisco, San Francisco, CA, United States
| | - Edward C. Hsiao
- Division of Endocrinology and Metabolism, Department of Medicine, The Institute for Human Genetics, and the Program in Craniofacial Biology, University of California, San Francisco, CA, United States
| |
Collapse
|
49
|
Huang Y, Zhang X, Zou Y, Yuan Q, Xian YF, Lin ZX. Quercetin Ameliorates Neuropathic Pain after Brachial Plexus Avulsion via Suppressing Oxidative Damage through Inhibition of PKC/MAPK/ NOX Pathway. Curr Neuropharmacol 2023; 21:2343-2361. [PMID: 37533160 PMCID: PMC10556381 DOI: 10.2174/1570159x21666230802144940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND Brachial plexus avulsion (BPA) animally involves the separation of spinal nerve roots themselves and the correlative spinal cord segment, leading to formidable neuropathic pain of the upper limb. METHODS The right seventh cervical (C7) ventral and dorsal roots were avulsed to establish a neuropathic pain model in rats. After operation, rats were treated with quercetin (QCN) by intragastric administration for 1 week. The effects of QCN were evaluated using mechanical allodynia tests and biochemical assay kits. RESULTS QCN treatment significantly attenuated the avulsion-provoked mechanical allodynia, elevated the levels of catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx) and total antioxidant capacity (TAC) in the C7 spinal dorsal horn. In addition, QCN administration inhibited the activations of macrophages, microglia and astrocytes in the C6 dorsal root ganglion (DRG) and C6-8 spinal dorsal horn, as well as attenuated the release of purinergic 2X (P2X) receptors in C6 DRG. The molecular mechanism underlying the above alterations was found to be related to the suppression of the PKC/MAPK/NOX signal pathway. To further study the anti-oxidative effects of QCN, we applied QCN on the H2O2-induced BV-2 cells in vitro, and the results attested that QCN significantly ameliorated the H2O2-induced ROS production in BV-2 cells, inhibited the H2O2-induced activation of PKC/MAPK/NOX pathway. CONCLUSION Our study for the first time provided evidence that QCN was able to attenuate pain hypersensitivity following the C7 spinal root avulsion in rats, and the molecular mechanisms involve the reduction of both neuro-inflammatory infiltration and oxidative stress via suppression of P2X receptors and inhibition of the activation of PKC/MAPK/NOX pathway. The results indicate that QCN is a natural compound with great promise worthy of further development into a novel therapeutic method for the treatment of BPA-induced neuropathic pain.
Collapse
Affiliation(s)
- Yanfeng Huang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Xie Zhang
- Research Center for Integrative Medicine of Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicine Pathogenesis and Therapy Research, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong. P.R. China
- Department of Medical Biotechnology, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong. P.R. China
| | - Yidan Zou
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Qiuju Yuan
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences, Hong Kong Science Park, Shatin, N.T., Hong Kong SAR, China
| | - Yan-Fang Xian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
- Hong Kong Institute of Integrative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| |
Collapse
|
50
|
FDG PET Imaging of the Pain Matrix in Neuropathic Pain Model Rats. Biomedicines 2022; 11:biomedicines11010063. [PMID: 36672571 PMCID: PMC9855331 DOI: 10.3390/biomedicines11010063] [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: 11/15/2022] [Revised: 12/03/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
Pain is an unpleasant subjective experience that is usually modified by complex multidimensional neuropsychological processes. Increasing numbers of neuroimaging studies in humans have characterized the hierarchical brain areas forming a pain matrix, which is involved in the different dimensions of pain components. Although mechanistic investigations have been performed extensively in rodents, the homologous brain regions involved in the multidimensional pain components have not been fully understood in the rodent brain. Herein, we successfully identified several brain regions activated in response to mechanical allodynia in neuropathic pain rat models using an alternative neuroimaging method based on 2-deoxy-2-[18F]fluoro-d-glucose positron emission tomography (FDG PET) scanning. Regions such as the medial prefrontal cortex, primary somatosensory cortex hindlimb region, and the centrolateral thalamic nucleus were identified. Moreover, brain activity in these regions was positively correlated with mechanical allodynia-related behavioral changes. These results suggest that FDG PET imaging in neuropathic pain model rats enables the evaluation of regional brain activity encoding the multidimensional pain aspect. It could thus be a fascinating tool to bridge the gap between preclinical and clinical investigations.
Collapse
|