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Wang L, Xu M, Wang Y, Wang F, Deng J, Wang X, Zhao Y, Liao A, Yang F, Wang S, Li Y. Melatonin improves synapse development by PI3K/Akt signaling in a mouse model of autism spectrum disorder. Neural Regen Res 2024; 19:1618-1624. [PMID: 38051907 PMCID: PMC10883500 DOI: 10.4103/1673-5374.387973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 09/05/2023] [Indexed: 12/07/2023] Open
Abstract
Abstract
JOURNAL/nrgr/04.03/01300535-202407000-00043/figure1/v/2023-11-20T171125Z/r/image-tiff
Autism spectrum disorders are a group of neurodevelopmental disorders involving more than 1100 genes, including Ctnnd2 as a candidate gene. Ctnnd2 knockout mice, serving as an animal model of autism, have been demonstrated to exhibit decreased density of dendritic spines. The role of melatonin, as a neurohormone capable of effectively alleviating social interaction deficits and regulating the development of dendritic spines, in Ctnnd2 deletion-induced nerve injury remains unclear. In the present study, we discovered that the deletion of exon 2 of the Ctnnd2 gene was linked to social interaction deficits, spine loss, impaired inhibitory neurons, and suppressed phosphatidylinositol-3-kinase (PI3K)/protein kinase B (Akt) signal pathway in the prefrontal cortex. Our findings demonstrated that the long-term oral administration of melatonin for 28 days effectively alleviated the aforementioned abnormalities in Ctnnd2 gene-knockout mice. Furthermore, the administration of melatonin in the prefrontal cortex was found to improve synaptic function and activate the PI3K/Akt signal pathway in this region. The pharmacological blockade of the PI3K/Akt signal pathway with a PI3K/Akt inhibitor, wortmannin, and melatonin receptor antagonists, luzindole and 4-phenyl-2-propionamidotetralin, prevented the melatonin-induced enhancement of GABAergic synaptic function. These findings suggest that melatonin treatment can ameliorate GABAergic synaptic function by activating the PI3K/Akt signal pathway, which may contribute to the improvement of dendritic spine abnormalities in autism spectrum disorders.
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Affiliation(s)
- Luyi Wang
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
| | - Man Xu
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
- Department of Pediatric, Chongqing University Fuling Hospital, Chongqing, China
| | - Yan Wang
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
| | - Feifei Wang
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
| | - Jing Deng
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
- Department of Neurosurgery, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Xiaoya Wang
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
- Department of Pathology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan Province, China
| | - Yu Zhao
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
| | - Ailing Liao
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
- NHC Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning Science and Technology Research Institute, Chongqing, China
| | - Feng Yang
- China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Shali Wang
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
| | - Yingbo Li
- Institute of Neuroscience, Department of Physiology, School of Basic Medical Science, Chongqing Medical University, Chongqing, China
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Li H, Zhou B, Wu J, Zhang Y, Zhang W, Doherty M, Deng X, Wang N, Xie D, Wang Y, Xie H, Li C, Wei J, Lei G, Zeng C. Melatonin is a potential novel analgesic agent for osteoarthritis: Evidence from cohort studies in humans and preclinical research in rats. J Pineal Res 2024; 76:e12945. [PMID: 38348943 DOI: 10.1111/jpi.12945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/05/2024] [Accepted: 01/21/2024] [Indexed: 02/15/2024]
Abstract
Melatonin exhibits potential for pain relief and long-term safety profile. We examined the analgesic effects of oral melatonin on osteoarthritis (OA) and investigated the underlying mechanism. Using data from a UK primary care database, we conducted a cohort study in individuals with OA to compare the number of oral analgesic prescriptions and the risk of knee/hip replacement between melatonin initiators and hypnotic benzodiazepines (i.e., active comparator) initiators using quantile regression models and Cox-proportional hazard models, respectively. To elucidate causation, we examined the effects of melatonin on pain behaviors and explored several metabolites that may serve as potential regulatory agents of melatonin in the monoiodoacetate rat model of OA. Using data from another community-based cohort study, that is, the Xiangya OA Study, we verified the association between the key serum metabolite and incident symptomatic knee OA. Compared with the hypnotic benzodiazepines cohort (n = 8135), the melatonin cohort (n = 813) had significantly fewer subsequent prescriptions of oral analgesics (50th percentile: 5 vs. 7, 75th percentile: 19 vs. 29, and 99th percentile: 140 vs. 162) and experienced a lower risk of knee/hip replacement (hazard ratio = 0.47, 95% Cl: 0.30-0.73) during the follow-up period. In rats, oral melatonin alleviated pain behaviors and increased serum levels of glycine. There was an inverse association between baseline serum glycine levels and the risk of incident symptomatic knee OA in humans (n = 760). In conclusion, our findings indicate that oral melatonin shows significant potential to be a novel treatment for OA pain. The potential role of glycine in its analgesic mechanism warrants further investigation.
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Affiliation(s)
- Hui Li
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
| | - Bin Zhou
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
| | - Jing Wu
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
| | - Yuqing Zhang
- Department of Medicine, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- The Mongan Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Weiya Zhang
- Academic Rheumatology, School of Medicine, University of Nottingham, Nottingham, UK
- Pain Centre Versus Arthritis, University of Nottingham, Nottingham, UK
| | - Michael Doherty
- Academic Rheumatology, School of Medicine, University of Nottingham, Nottingham, UK
- Pain Centre Versus Arthritis, University of Nottingham, Nottingham, UK
| | - Xinjia Deng
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Ning Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
| | - Dongxing Xie
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
| | - Yilun Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
| | - Hui Xie
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Changjun Li
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Jie Wei
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Guanghua Lei
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Chao Zeng
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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Xiong Z, Peng G, Deng J, Liu M, Ning X, Zhuang Y, Yang H, Sun H. Therapeutic targets and potential delivery systems of melatonin in osteoarthritis. Front Immunol 2024; 15:1331934. [PMID: 38327517 PMCID: PMC10847247 DOI: 10.3389/fimmu.2024.1331934] [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: 11/02/2023] [Accepted: 01/04/2024] [Indexed: 02/09/2024] Open
Abstract
Osteoarthritis (OA) is a highly prevalent age-related musculoskeletal disorder that typically results in chronic pain and disability. OA is a multifactorial disease, with increased oxidative stress, dysregulated inflammatory response, and impaired matrix metabolism contributing to its onset and progression. The neurohormone melatonin, primarily synthesized by the pineal gland, has emerged as a promising therapeutic agent for OA due to its potential to alleviate inflammation, oxidative stress, and chondrocyte death with minimal adverse effects. The present review provides a comprehensive summary of the current understanding regarding melatonin as a promising pharmaceutical agent for the treatment of OA, along with an exploration of various delivery systems that can be utilized for melatonin administration. These findings may provide novel therapeutic strategies and targets for inhibiting the advancement of OA.
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Affiliation(s)
- Zhilin Xiong
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Guoxuan Peng
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Jin Deng
- Department of Emergence Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Miao Liu
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xu Ning
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yong Zhuang
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Hua Yang
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Hong Sun
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
- Department of Emergence Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
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Hsieh MC, Lai CY, Lin LT, Chou D, Yeh CM, Cheng JK, Wang HH, Lin KH, Lin TB, Peng HY. Melatonin Relieves Paclitaxel-Induced Neuropathic Pain by Regulating pNEK2-Dependent Epigenetic Pathways in DRG Neurons. ACS Chem Neurosci 2023; 14:4227-4239. [PMID: 37978917 DOI: 10.1021/acschemneuro.3c00616] [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] [Indexed: 11/19/2023] Open
Abstract
The neurohormone melatonin (MLT) demonstrates promising potential in ameliorating neuropathic pain induced by paclitaxel (PTX) chemotherapy. However, little is known about its protective effect on dorsal root ganglion (DRG) neurons in neuropathic pain resulting from the chemotherapeutic drug PTX. Here, PTX-treated rats revealed that intrathecal administration of MLT dose-dependently elevated hind paw withdrawal thresholds and latency, indicating that MLT significantly reversed PTX-induced neuropathic pain. Mechanistically, the analgesic effects of MLT were found to be mediated via melatonin receptor 2 (MT2), as pretreatment with an MT2 receptor antagonist inhibited these effects. Moreover, intrathecal MLT injection reversed the pNEK2-dependent epigenetic program induced by PTX. All of the effects caused by MLT were blocked by pretreatment with an MT2 receptor-selective antagonist, 4P-PDOT. Remarkably, multiple MLT administered during PTX treatment (PTX+MLTs) exhibited not only rapid but also lasting reversal of allodynia/hyperalgesia compared to single-bolus MLT administered after PTX treatment (PTX+MLT). In addition, PTX+MLTs exhibited greater efficacy in reversing PTX-induced alterations in pRSK2, pNEK2, JMJD3, H3K27me3, and TRPV1 expression and interaction in DRG neurons than PTX+MLT. These results indicated that MLT administered during PTX treatment reduced the incidence and/or severity of neuropathy and had a better inhibitory effect on the pNEK2-dependent epigenetic program compared to MLT administered after PTX treatment. In conclusion, MLT/MT2 is a promising therapy for the treatment of pNEK2-dependent painful neuropathy resulting from PTX treatment. MLT administered during PTX chemotherapy may be more effective in the prevention or reduction of PTX-induced neuropathy and maintaining quality.
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Affiliation(s)
- Ming-Chun Hsieh
- Department of Medicine, Mackay Medical College, New Taipei 252, Taiwan
| | - Cheng-Yuan Lai
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 252, Taiwan
| | - Li-Ting Lin
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 252, Taiwan
| | - Dylan Chou
- Department of Medicine, Mackay Medical College, New Taipei 252, Taiwan
| | - Chou-Ming Yeh
- Division of Thoracic Surgery, Department of Health, Taichung Hospital, Executive Yuan, Taichung 40343, Taiwan
- Central Taiwan University of Science and Technology, Taichung 40343, Taiwan
| | - Jen-Kun Cheng
- Department of Medicine, Mackay Medical College, New Taipei 252, Taiwan
- Department of Anesthesiology, Mackay Memorial Hospital, Taipei104, Taiwan
| | - Hsueh-Hsiao Wang
- Department of Medicine, Mackay Medical College, New Taipei 252, Taiwan
| | - Kuan-Hung Lin
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 252, Taiwan
- Traditional Herbal Medicine Research Center, Taipei Medical University Hospital, Taipei110, Taiwan
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 252, Taiwan
| | - Tzer-Bin Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 110, Taiwan
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei City 110, Taiwan
- Institute of New Drug Development, College of Medicine, China Medical University, Taichung 40604, Taiwan
| | - Hsien-Yu Peng
- Department of Medicine, Mackay Medical College, New Taipei 252, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 252, Taiwan
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Chu Y, Wu Y, Jia S, Xu K, Liu J, Mai L, Fan W, Huang F. Single-nucleus transcriptome analysis reveals transcriptional profiles of circadian clock and pain related genes in human and mouse trigeminal ganglion. Front Neurosci 2023; 17:1176654. [PMID: 37250405 PMCID: PMC10210144 DOI: 10.3389/fnins.2023.1176654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/21/2023] [Indexed: 05/31/2023] Open
Abstract
Introduction Clinical studies have revealed the existence of circadian rhythms in pain intensity and treatment response for chronic pain, including orofacial pain. The circadian clock genes in the peripheral ganglia are involved in pain information transmission by modulating the synthesis of pain mediators. However, the expression and distribution of clock genes and pain-related genes in different cell types within the trigeminal ganglion, the primary station of orofacial sensory transmission, are not yet fully understood. Methods In this study, data from the normal trigeminal ganglion in the Gene Expression Omnibus (GEO) database were used to identify cell types and neuron subtypes within the human and mouse trigeminal ganglion by single nucleus RNA sequencing analysis. In the subsequent analyses, the distribution of the core clock genes, pain-related genes, and melatonin and opioid-related genes was assessed in various cell clusters and neuron subtypes within the human and mouse trigeminal ganglion. Furthermore, the statistical analysis was used to compare the differences in the expression of pain-related genes in the neuron subtypes of trigeminal ganglion. Results The present study provides comprehensive transcriptional profiles of core clock genes, pain-related genes, melatonin-related genes, and opioid-related genes in different cell types and neuron subtypes within the mouse and human trigeminal ganglion. A comparative analysis of the distribution and expression of the aforementioned genes was conducted between human and mouse trigeminal ganglion to investigate species differences. Discussion Overall, the results of this study serve as a primary and valuable resource for exploring the molecular mechanisms underlying oral facial pain and pain rhythms.
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Affiliation(s)
- Yanhao Chu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yaqi Wu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Shilin Jia
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ke Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jinyue Liu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Lijia Mai
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wenguo Fan
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Fang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
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Lückemeyer DD, Prudente AS, de Amorim Ferreira M, da Silva AM, Tonello R, Junior SJM, do Prado CSH, de Castro Júnior CJ, Gomez MV, Calixto JB, Ferreira J. Critical Pronociceptive Role of Family 2 Voltage-Gated Calcium Channels in a Novel Mouse Model of HIV-Associated Sensory Neuropathy. Mol Neurobiol 2023; 60:2954-2968. [PMID: 36754911 DOI: 10.1007/s12035-023-03244-8] [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: 07/11/2022] [Accepted: 01/13/2023] [Indexed: 02/10/2023]
Abstract
Some people living with HIV present painful sensory neuropathy (HIV-SN) that is pharmacoresistant, sex-associated, and a major source of morbidity. Since the specific mechanisms underlying HIV-SN are not well understood, the aim of our study was to characterize a novel model of painful HIV-SN by combining the HIV-1 gp120 protein and the antiretroviral stavudine (d4T) in mice and to investigate the pronociceptive role of the family 2 voltage-gated calcium channel (VGCC) α1 subunit (Cav2.X channels) in such a model. HIV-SN was induced in male and female C57BL/6 mice by administration of gp120 and/or d4T and detected by a battery of behavior tests and by immunohistochemistry. The role of Cav2.X channels was assessed by the treatment with selective blockers and agonists as well as by mRNA detection. Repeated administration with gp120 and/or d4T produced long-lasting touch-evoked painful-like behaviors (starting at 6 days, reaching a maximum on day 13, and lasting up to 28 days after treatment started), with a greater intensity in female mice treated with the combination of gp120 + d4T. Moreover, gp120 + d4T treatment reduced the intraepidermal nerve fibers and well-being of female mice, without altering other behaviors. Mechanistically, gp120 + d4T treatment induced Cav2.1, 2.2, and 2.3 transcriptional increases in the dorsal root ganglion and the Cav2.X agonist-induced nociception. Accordingly, intrathecal selective Cav2.2 blockade presented longer and better efficacy in reversing the hyperalgesia induced by gp120 + d4T treatment compared with Cav2.1 or Cav2.3, but also presented the worst safety (inducing side effects at effective doses). We conclude that the family 2 calcium channels (Cav2.X) exert a critical pronociceptive role in a novel mouse model of HIV-SN.
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Affiliation(s)
- Debora Denardin Lückemeyer
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Arthur Silveira Prudente
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Marcella de Amorim Ferreira
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Ana Merian da Silva
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Raquel Tonello
- Department of Anesthesiology, Pain Research Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Sérgio José Macedo Junior
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
- Centro de Inovação E Ensaios Pré-Clínicos, Florianópolis, SC, Brazil
| | | | | | - Marcus Vinicius Gomez
- Instituto de Educação E Pesquisa da Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | | | - Juliano Ferreira
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
- Departamento de Farmacologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
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Ramsay S, Zagorodnyuk V. Role of circadian rhythms and melatonin in bladder function in heath and diseases. Auton Neurosci 2023; 246:103083. [PMID: 36871511 DOI: 10.1016/j.autneu.2023.103083] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 03/05/2023]
Abstract
The circadian system modulates all visceral organ physiological processes including urine storage and voiding. The "master clock" of the circadian system lies within suprachiasmatic nucleus of the hypothalamus while "peripheral clocks" are found in most peripheral tissue and organs, including the urinary bladder. Disruptions of circadian rhythms can cause organ malfunction and disorder or exacerbate pre-existing ones. It has been suggested that nocturia, which develops mostly in the elderly, could be a circadian-related disorder of the bladder. In the bladder, many types of gap junctions and ion channels in the detrusor, urothelium and sensory nerves are likely under strict local peripheral circadian control. The pineal hormone, melatonin, is a circadian rhythm synchroniser capable of controlling a variety of physiological processes in the body. Melatonin predominantly acts via the melatonin 1 and melatonin 2 G-protein coupled receptors expressed in the central nervous system, and many peripheral organs and tissues. Melatonin could be beneficial in the treatment of nocturia and other common bladder disorders. The ameliorating action of melatonin on bladder function is likely due to multiple mechanisms which include central effects on voiding and peripheral effects on the detrusor and bladder afferents. More studies are warranted to determine the precise mechanisms of circadian rhythm coordination of the bladder function and melatonin influences on the bladder in health and diseases.
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Affiliation(s)
- Stewart Ramsay
- Discipline of Human Physiology, Flinders Health & Medical Research Institute, College of Medicine and Public Health, Flinders University, South Australia, Australia
| | - Vladimir Zagorodnyuk
- Discipline of Human Physiology, Flinders Health & Medical Research Institute, College of Medicine and Public Health, Flinders University, South Australia, Australia.
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Yao S, Zheng M, Wang Z, Zhao Y, Wang S, Liu Z, Li Z, Guan Y, Wang ZL, Li L. Self-Powered, Implantable, and Wirelessly Controlled NO Generation System for Intracranial Neuroglioma Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2205881. [PMID: 36189858 DOI: 10.1002/adma.202205881] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Gas therapy is an emerging technology for improving cancer therapy with high efficiency and low side effects. However, due to the existence of the gatekeeper of the blood-brain barrier (BBB) and the limited availability of current drug delivery systems, there still have been no reports on gas therapy for intracranial neuroglioma. Herein, an integrated, self-powered, and wirelessly controlled gas-therapy system is reported, which is composed of a self-powered triboelectric nanogenerator (TENG) and an implantable nitric oxide (NO) releasing device for intracranial neuroglioma therapy. In the system, the patient self-driven TENG converts the mechanical energy of body movements into electricity as a sustainable and self-controlled power source. When delivering energy to light a light-emitting diode in the implantable NO releasing device via wireless control, the encapsulated NO donor s-nitrosoglutathione (GSNO) can generate NO gas to locally kill the glioma cells. The efficacy of the proof-of-concept system in subcutaneous 4T1 breast cancer model in mice and intracranial glioblastoma multiforme in rats is verified. This self-powered gas-therapy system has great potential to be an effective adjuvant treatment modality to inhibit tumor growth, relapse, and invasion via teletherapy.
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Affiliation(s)
- Shuncheng Yao
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Minjia Zheng
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
| | - Zhuo Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Yunchao Zhao
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
| | - Shaobo Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
| | - Zhirong Liu
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Zhou Li
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 101400, P. R. China
- Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
| | - Yunqian Guan
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, P. R. China
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 101400, P. R. China
- Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Linlin Li
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 101400, P. R. China
- Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
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Melatonin inhibits muscular-mucosal stretch-sensitive bladder afferents via the MT2 receptors. Sci Rep 2022; 12:17686. [PMID: 36271291 PMCID: PMC9586995 DOI: 10.1038/s41598-022-22705-z] [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: 09/14/2022] [Accepted: 10/18/2022] [Indexed: 01/18/2023] Open
Abstract
Melatonin is a circadian rhythm regulator capable of controlling a variety of physiological processes in the body. It predominantly acts via the melatonin 1 (MT1) and MT2 receptors expressed in the CNS neurons and peripheral organs and tissues. Melatonin can modulate urinary bladder function, however, to date it is not known if melatonin can regulate activity of sensory neurons innervating the bladder. Bladder afferents play an important role in urine storage and voiding. Therefore, this study aims to determine if melatonin can regulate mechanosensitivity of 2 major classes of sensory neurons in the guinea pig bladder: stretch-insensitive mucosal and low threshold stretch-sensitive muscular-mucosal afferents. The effects of melatonin on the mechanosensitivity of mucosal and muscular-mucosal afferents were measured ex vivo using single unit extracellular recording. Melatonin did not affect the responses of mucosal afferents to stroking of their receptive fields but did concentration-dependently, significantly inhibit 69% of muscular-mucosal afferents responses to stroking and bladder stretch. This inhibitory effect was not affected by the MT1 receptor antagonist, S26131 but was blocked by the selective MT2 receptor antagonists, K-185 and 4-P-PDOT. Forskolin significantly potentiated the responses of muscular-mucosal afferents to stroking and stretch, which were prevented by melatonin. These findings demonstrate a direct inhibitory effect of melatonin on the mechanosensitivity of low threshold stretch-sensitive muscular-mucosal bladder afferents acting via MT2 receptors, which is independent from its action on detrusor muscle. This may have important clinical implications for the treatment of many common bladder disorders including nocturia.
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Melatonin attenuates bone cancer pain via the SIRT1/HMGB1 pathway. Neuropharmacology 2022; 220:109254. [PMID: 36122662 DOI: 10.1016/j.neuropharm.2022.109254] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/08/2022] [Accepted: 09/08/2022] [Indexed: 11/23/2022]
Abstract
Bone cancer pain (BCP), which seriously affects the quality of life of patients, remains a clinically challenging problem. Hence, there is an urgent need to investigate new mechanisms and develop new therapeutics to relieve BCP. In the present study, we investigated the analgesic effect of melatonin on BCP and the underlying mechanisms. Male C57BL/6 mice were used to establish BCP models. We found that the levels of sirtuin 1 (SIRT1) and nucleus-high mobility group box-1 (HMGB1) were decreased, whilst the levels of HMGB1, cytoplasm-HMGB1 and inflammatory cytokines (TNF-α, IL-6, IL-1β) were increased in the spinal cord of BCP mice on days 7, 14 and 21 after implantation compared with the levels in sham mice. Intrathecal administration of melatonin dose-dependently increased values of PWMT and TWL compared with the BCP group. However, intrathecal administration of EX527 (a selective SIRT1 antagonist) reversed the analgesic effect of melatonin. Moreover, mice in the melatonin group exhibited an increase in SIRT1 and nucleus-HMGB1, whilst there was a decrease in HMGB1, cytoplasm-HMGB1, rage, acetyl-HMGB1 and inflammatory cytokines compared with those in BCP mice. EX527 also reversed these changes. Furthermore, SIRT1 physically interacted with HMGB1 in the BCP mice. In conclusion, intrathecal administration of melatonin attenuates BCP through SIRT1-dependent inhibition of HMGB1 translocation and inflammatory cytokines. Melatonin may be a promising drug for the clinical treatment of BCP.
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11
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Melatonergic Receptors (Mt1/Mt2) as a Potential Additional Target of Novel Drugs for Depression. Neurochem Res 2022; 47:2909-2924. [PMID: 35689787 PMCID: PMC9187850 DOI: 10.1007/s11064-022-03646-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 05/21/2022] [Accepted: 05/25/2022] [Indexed: 11/06/2022]
Abstract
A complex pathogenesis involving several physiological systems is theorized to underline the development of depressive disorders. Depression is accompanied by circadian regulation disruption and interaction with the functioning of both central and peripheral oscillators. Many aspects of melatonin function unite these systems. The use of drugs for circadian rhythm disorders could inspire a potential treatment strategy for depression. Melatonin plays an essential role in the regulation of circadian rhythms. It exerts effect by activating two types of melatonin receptors, type 1A (MT1) and 1B (MT2). These are G-protein-coupled receptors, predominantly located in the central nervous system. MT1/MT2 agonists could be a useful treatment approach according to all three prevalent theories of the pathogenesis of depression involving either monoamines, synaptic remodeling, or immune/inflammatory events. MT1/MT2 receptors can be a potential target for novel antidepressants with impact on concentrations of neurotrophins or neurotransmitters, and reducing levels of pro-inflammatory cytokines. There is an interesting cross-talk mediated via the physical association of melatonin and serotonin receptors into functional heteromers. The antidepressive and neurogenetic effects of MT1/MT2 agonists can also be caused by the inhibition of the acid sphingomyelinase, leading to reduced ceramide, or increasing monoamine oxidase A levels in the hippocampus. Compounds targeting MT1 and MT2 receptors could have potential for new anti-depressants that may improve the quality of therapeutic interventions in treating depression and relieving symptoms. In particular, a combined effect on MT1 and/or MT2 receptors and neurotransmitter systems may be useful, since the normalization of the circadian rhythm through the melatonergic system will probably contribute to improved treatment. In this review, we discuss melatonergic receptors as a potential additional target for novel drugs for depression.
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12
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The Effect of Melatonin on Radicular Pain in a Rat Model of Lumbar Disc Herniation. Spine (Phila Pa 1976) 2022; 47:754-763. [PMID: 35102121 DOI: 10.1097/brs.0000000000004329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Controlled, randomized, animal study. OBJECTIVE To investigate the effect of melatonin and its receptors on radicular pain and the possible mechanisms. SUMMARY OF BACKGROUND DATA Lumbar disc herniation (LDH) may induce radicular pain, but the mechanism is not clear and therapeutic effect is still poor. Previously we report central sensitization meaning potentiation of spinal nociceptive synaptic transmission is the critical cause of radicular pain. Melatonin (Mel) has been reported to promote hippocampal synaptic transmission and thus improve learning ability. But the effect of Mel on spinal synaptic transmission and radicular pain are not clear. METHODS Rat LDH model was induced by autologous nucleus pulposus (NP) implantation. Melatonin was delivered intraperitoneally four times a day, from day 1 to day 3 after surgery. Melatonin receptor agonist and antagonists were delivered intrathecally for 3 days as well. Mechanical and thermal pain thresholds were assessed by von Frey filaments and hotplate test respectively. Electrophysiological recording was employed for survey C-fiber evoked field potentials. The protein level of N- methyl-D-aspartate submit 2A (NR2A), NR2B, melatonin receptor 1 (MT1), and receptor 2 (MT2) was evaluated by western blotting. Spinal expression of calcitonin gene related peptides (CGRP), isolectin b4 (IB4), and neurofilament-200 (NF200) was displayed by immunofluorescence staining. RESULTS Melatonin significantly increased mechanical and thermal pain thresholds, lasting at least to day 5 after surgery. Melatonin decreased C-fiber evoked field potentials; decreased spinal NR2B protein level; reduced spinal CGRP, and IB4 expression. MT2 was upregulated after NP implantation and was co-localized with neuron and microglia. MT2 receptor agonist simulated the effect of Mel, and both MT receptor broadspectrum antagonist and MT2 specific antagonist abolished the effect of MT2 receptor agonist. CONCLUSION Melatonin alleviates radicular pain from LDH by inhibiting central sensitization via binding with its receptor 2, decreasing spinal CGRP, IB4, and NR2B expression.
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Liu R, Peng Y, Lu L, Peng S, Chen T, Zhan M. Near-infrared light-triggered nano-prodrug for cancer gas therapy. J Nanobiotechnology 2021; 19:443. [PMID: 34949202 PMCID: PMC8697457 DOI: 10.1186/s12951-021-01078-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/11/2021] [Indexed: 02/06/2023] Open
Abstract
Gas therapy (GT) has attracted increasing attention in recent years as a new cancer treatment method with favorable therapeutic efficacy and reduced side effects. Several gas molecules, such as nitric oxide (NO), carbon monoxide (CO), hydrogen (H2), hydrogen sulfide (H2S) and sulfur dioxide (SO2), have been employed to treat cancers by directly killing tumor cells, enhancing drug accumulation in tumors or sensitizing tumor cells to chemotherapy, photodynamic therapy or radiotherapy. Despite the great progress of gas therapy, most gas molecules are prone to nonspecific distribution when administered systemically, resulting in strong toxicity to normal tissues. Therefore, how to deliver and release gas molecules to targeted tissues on demand is the main issue to be considered before clinical applications of gas therapy. As a specific and noninvasive stimulus with deep penetration, near-infrared (NIR) light has been widely used to trigger the cleavage and release of gas from nano-prodrugs via photothermal or photodynamic effects, achieving the on-demand release of gas molecules with high controllability. In this review, we will summarize the recent progress in cancer gas therapy triggered by NIR light. Furthermore, the prospects and challenges in this field are presented, with the hope for ongoing development.
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Affiliation(s)
- Runcong Liu
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Hospital Affiliated With Jinan University (Zhuhai People's Hospital), Jinan University, Zhuhai, 519000, Guangdong, P.R. China
| | - Yongjun Peng
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Hospital Affiliated With Jinan University (Zhuhai People's Hospital), Jinan University, Zhuhai, 519000, Guangdong, P.R. China
| | - Ligong Lu
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Hospital Affiliated With Jinan University (Zhuhai People's Hospital), Jinan University, Zhuhai, 519000, Guangdong, P.R. China
| | - Shaojun Peng
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Hospital Affiliated With Jinan University (Zhuhai People's Hospital), Jinan University, Zhuhai, 519000, Guangdong, P.R. China.
| | - Tianfeng Chen
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632, China.
| | - Meixiao Zhan
- Zhuhai Precision Medical Center, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Hospital Affiliated With Jinan University (Zhuhai People's Hospital), Jinan University, Zhuhai, 519000, Guangdong, P.R. China.
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14
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Wang YH, Gao X, Tang YR, Yu Y, Sun MJ, Chen FQ, Li Y. The Role of NF-κB/NLRP3 Inflammasome Signaling Pathway in Attenuating Pyroptosis by Melatonin Upon Spinal Nerve Ligation Models. Neurochem Res 2021; 47:335-346. [PMID: 34515922 DOI: 10.1007/s11064-021-03450-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 10/20/2022]
Abstract
Accumulated evidence has demonstrated causative links between neuropathic pain (NP) and immune-mediated inflammatory disorders. However, the role of inflammasome-induced pyroptosis in NP remains elusive. Melatonin possesses a well-documented analgesic action in various pain models. The current study aimed to test our hypothesis that melatonin regulated pyroptosis to alleviate NP by inhibiting NF-κB/NLRP3-dependent signaling. A rat model of spinal nerve ligation (SNL) was established to explore the potential association between melatonin and pyroptosis. Behavioral experiments revealed that SNL provoked severe allodynia which was suppressed by the administration of melatonin, a caspase-1 inhibitor (VX-765), or an NF-κB inhibitor (BAY 11-7085). SNL significantly up-regulated the inflammatory cytokines associated with the excessive activation of NLRP3 components and NF-κB signaling, as well as a marked pyroptosis activation. These effects were partially inhibited by melatonin, VX-765 or BAY 11-7085, and when melatonin and inhibitors were added together, the effect was enhanced. In conclusion, melatonin has potent analgesic and anti-inflammatory effects in SNL models through preventing pyroptosis via the NF-κB/NLRP3 inflammasome signaling pathway.
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Affiliation(s)
- Yi-Hao Wang
- Department of Pain Management, Qingdao Municipal Hospital, 5 Donghaizhong Road, Qingdao, 266011, Shandong Province, China
| | - Xiao Gao
- Qingdao Mental Health Center, Qingdao University, Qingdao, 266034, Shandong Province, China
| | - Yu-Ru Tang
- Qingdao Mental Health Center, Qingdao University, Qingdao, 266034, Shandong Province, China
| | - Yang Yu
- Department of Pain Management, Qingdao Municipal Hospital, 5 Donghaizhong Road, Qingdao, 266011, Shandong Province, China
| | - Ming-Jie Sun
- Department of Pain Management, Qingdao Municipal Hospital, 5 Donghaizhong Road, Qingdao, 266011, Shandong Province, China
| | - Fu-Qiang Chen
- Department of Pain Management, Qingdao Municipal Hospital, 5 Donghaizhong Road, Qingdao, 266011, Shandong Province, China.
| | - Yan Li
- Department of Gynecology and Obstetrics, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266003, Shandong Province, China.
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15
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Liu W, Jiang H, Liu X, Hu S, Li H, Feng Y, Ke J, Long X. Melatonin Abates TMJOA Chronic Pain by MT 2R in Trigeminal Ganglion Neurons. J Dent Res 2021; 101:111-119. [PMID: 34315312 DOI: 10.1177/00220345211026551] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Temporomandibular joint osteoarthritis (TMJOA) is one of the most common diseases causing chronic pain in the oral and maxillofacial region. So far, there are few ways to relieve the pain of TMJOA. Melatonin (MT) has a good analgesic effect in many diseases, including fibromyalgia, neuropathic pain, chronic headache, and burn pain, with very low acute toxicity and side effects. This study was to investigate the role and mechanism of MT in TMJOA chronic pain. In rats TMJOA chronic pain occurred at day 14 after an intra-temporomandibular joint injection of monosodium iodoacetate, which we previously reported. The enzyme-linked immunosorbent assay results showed that MT levels were higher in the synovial fluid from patients and rats with TMJOA as compared with those from control. Fluorescent retrograde tracing (Dil) identified that upregulation of MT type 2 receptor (MT2R) in trigeminal ganglion (TG) neurons innervating rat temporomandibular joints was accompanied by TMJOA chronic pain. Nociceptive behavior as assessed by von Frey and the Rat Grimace Scale demonstrated that exogenous administration of MT relieved chronic pain in TMJOA rats, whereas blocking MT2R with 4P-PDOT reversed the analgesic effect of MT. Immunofluorescence analysis also confirmed that MT inhibited CGRP and IB4 expression of TG neurons, and this inhibition was reversed by administering the MT2R antagonist in TMJOA rats. By using Fluo-3 AM-based calcium imaging in vitro, MT elicited calcium transients in Dil+ TG neurons, which were significantly abolished by 4P-PDOT. Collectively, this study suggested that MT relieves the TMJOA chronic pain of rats through downregulation of sensitized CGRP+ and IB4+ neurons in TG via MT2R. This will be helpful for health care professionals utilizing MT as an option against TMJOA chronic pain.
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Affiliation(s)
- W Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - H Jiang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - X Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - S Hu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - H Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Y Feng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - J Ke
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China.,Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - X Long
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China.,Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
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Ma H, Kang J, Fan W, He H, Huang F. ROR: Nuclear Receptor for Melatonin or Not? Molecules 2021; 26:molecules26092693. [PMID: 34064466 PMCID: PMC8124216 DOI: 10.3390/molecules26092693] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/28/2021] [Accepted: 05/03/2021] [Indexed: 12/14/2022] Open
Abstract
Whether the retinoic acid-related orphan receptor (ROR) is a nuclear receptor of melatonin remains controversial. ROR is inextricably linked to melatonin in terms of its expression, function, and mechanism of action. Additionally, studies have illustrated that melatonin functions analogous to ROR ligands, thereby modulating the transcriptional activity of ROR. However, studies supporting these interactions have since been withdrawn. Furthermore, recent crystallographic evidence does not support the view that ROR is a nuclear receptor of melatonin. Some other studies have proposed that melatonin indirectly regulates ROR activity rather than directly binding to ROR. This review aims to delve into the complex relationship of the ROR receptor with melatonin in terms of its structure, expression, function, and mechanism. Thus, we provide the latest evidence and views on direct binding as well as indirect regulation of ROR by melatonin, dissecting both viewpoints in-depth to provide a more comprehensive perspective on this issue.
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Affiliation(s)
- Haozhen Ma
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (H.M.); (J.K.); (W.F.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Jun Kang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (H.M.); (J.K.); (W.F.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Wenguo Fan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (H.M.); (J.K.); (W.F.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
| | - Hongwen He
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510080, China
- Correspondence: (H.H.); (F.H.); Tel.: +86-20-8733-0570 (H.H. & F.H.)
| | - Fang Huang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; (H.M.); (J.K.); (W.F.)
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
- Correspondence: (H.H.); (F.H.); Tel.: +86-20-8733-0570 (H.H. & F.H.)
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17
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Wang YH, Tang YR, Gao X, Liu J, Zhang NN, Liang ZJ, Li Y, Pan LX. The anti-inflammatory and analgesic effects of intraperitoneal melatonin after spinal nerve ligation are mediated by inhibition of the NF-κB/NLRP3 inflammasome signaling pathway. Brain Res Bull 2021; 169:156-166. [PMID: 33508403 DOI: 10.1016/j.brainresbull.2021.01.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To explore the potential analgesic effect of melatonin and its underlying molecular mechanisms in a neuropathic pain model induced by spinal nerve ligation (SNL). METHODS The experimental animals were divided into different groups including sham, vehicle, melatonin (MT) treatment, caspase-1 inhibitor (VX-765) treatment and MT2 antagonist (4P-PDOT) treatment. On the first three successive postoperative days, rats were intraperitoneally administered with MT, VX-765 or combination of MT and 4P-PDOT. Hyperalgesic behavior after SNL was evaluated using the paw withdrawal threshold (PWT). We then assessed expression of tumor necrosis factor-α (TNF-α), IL-18, interleukin-1β (IL-1β), NLRP3 inflammasome components, and nuclear factor-κB (NF-κB) activation using enzyme-linked immunosorbent assay kits (ELISA), real-time PCR, immunohistochemistry, and western blot, respectively, in spinal cord horn tissues extracted on postoperative day 7. RESULTS The results showed that melatonin treatment alleviated SNL-induced allodynia. We observed an SNL-induced upregulation of TNF-α, IL-18, IL-1β, NLRP3, ASC, cleaved caspase-1, and NF-κB in the lumbar spinal cord horn of rats, which was significantly attenuated by intraperitoneal injection of melatonin or VX-765. Additionally, co-treatment of melatonin and 4P-PDOT abrogated the analgesic and anti-inflammatory effect of melatonin. CONCLUSION Melatonin had potent analgesic and anti-inflammatory effects in SNL-induced neuropathic pain via NF-κB/NLRP3 inflammasome signaling pathway. Our results therefore suggested that this pathway could represent a novel therapeutic target for the management of neuropathic pain.
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Affiliation(s)
- Yi-Hao Wang
- Department of Pain Management, Qingdao Municipal Hospital, Shandong Province, 266011, China
| | - Yu-Ru Tang
- Qingdao Mental Health Center, Qingdao University, Shandong Province, 266034, China
| | - Xiao Gao
- Qingdao Mental Health Center, Qingdao University, Shandong Province, 266034, China
| | - Juan Liu
- Department of Anesthesiology, Maternity and Child Hospital of Shandong Province, Shandong Province, 250014, China
| | - Nan-Nan Zhang
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Shandong Province, 266003, China
| | - Zhao-Jun Liang
- Department of Anesthesiology, Qingdao Municipal Hospital, Shandong Province, 266011, China
| | - Yan Li
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Qingdao University, Shandong Province, 266003, China
| | - Li-Xiao Pan
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Shandong Province, 266003, China.
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18
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Wang XQ, Wang W, Peng M, Zhang XZ. Free radicals for cancer theranostics. Biomaterials 2020; 266:120474. [PMID: 33125969 DOI: 10.1016/j.biomaterials.2020.120474] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 09/20/2020] [Accepted: 10/18/2020] [Indexed: 01/06/2023]
Abstract
Free radicals were generally regarded as highly reactive, transient and harmful species. In fact, some of the free radicals can also be inactive, long-lived and beneficial for our health. These properties of free radicals provide future possibilities for their application in various fields. Owning to their open-shell electronic structure, free radicals exhibit unique advantages in biomedical applications, such as high reactivity, photoacoustic and photothermal conversion ability, molecular magnetic. In this review, recent progress on free radicals and their applications in cancer theranostics are presented. Typical materials that exhibit controlled generation of free radicals and their applications for photodynamic therapy (PDT), chemodynamic therapy (CDT), sonodynamic therapy (SDT), gas therapy, hypoxic cancer treatment, photothermal therapy (PTT), photoacoustic imaging (PAI) and magnetic resonance imaging (MRI) are summarized and discussed.
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Affiliation(s)
- Xiao-Qiang Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China; The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Wenjing Wang
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Mengyun Peng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China; School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, 310000, PR China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, PR China.
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Chen IJ, Yang CP, Lin SH, Lai CM, Wong CS. The Circadian Hormone Melatonin Inhibits Morphine-Induced Tolerance and Inflammation via the Activation of Antioxidative Enzymes. Antioxidants (Basel) 2020; 9:antiox9090780. [PMID: 32842597 PMCID: PMC7555201 DOI: 10.3390/antiox9090780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/06/2020] [Accepted: 08/20/2020] [Indexed: 12/16/2022] Open
Abstract
Opioids are commonly prescribed for clinical pain management; however, dose-escalation, tolerance, dependence, and addiction limit their usability for long-term chronic pain. The associated poor sleep pattern alters the circadian neurobiology, and further compromises the pain management. Here, we aim to determine the correlation between constant light exposure and morphine tolerance and explore the potential of melatonin as an adjuvant of morphine for neuropathic pain treatment. Methods: Wistar rats were preconditioned under constant light (LL) or a regular light/dark (LD) cycle before neuropathic pain induction by chronic constriction injury. An intrathecal (i.t.) osmotic pump was used for continued drug delivery to induce morphine tolerance. Pain assessments, including the plantar test, static weight-bearing symmetry, and tail-flick latency, were used to determine the impact of the light disruption or exogenous melatonin on the morphine tolerance progression. Results: constant light exposure significantly aggravates morphine tolerance in neuropathic rats. Continued infusion of low-dose melatonin (3 μg/h) attenuated morphine tolerance in both neuropathic and naïve rats. This protective effect was independent of melatonin receptors, as shown by the neutral effect of melatonin receptors inhibitors. The transcriptional profiling demonstrated a significant enhancement of proinflammatory and pain-related receptor genes in morphine-tolerant rats. In contrast, this transcriptional pattern was abolished by melatonin coinfusion along with the upregulation of the Kcnip3 gene. Moreover, melatonin increased the antioxidative enzymes SOD2, HO-1, and GPx1 in the spinal cord of morphine-tolerant rats. Conclusion: Dysregulated circadian light exposure significantly compromises the efficacy of morphine’s antinociceptive effect, while the cotreatment with melatonin attenuates morphine tolerance/hyperalgesia development. Our results suggest the potential of melatonin as an adjuvant of morphine in clinical pain management, particularly in patients who need long-term opioid treatment.
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Affiliation(s)
- Ing-Jung Chen
- Department of Anesthesiology, Cathay General Hospital, Taipei 10630, Taiwan;
- Department of Medical Research, Cathay General Hospital, Taipei 10630, Taiwan
| | - Chih-Ping Yang
- Department of Anesthesiology, Chi-Mei Medical Center, Tainan 71004, Taiwan;
- Department of Anesthesiology, School of Medicine, National Defense Medical Center, Taipei 11490, Taiwan
| | - Sheng-Hsiung Lin
- Planning & Management Office, Tri-Service General Hospital, Taipei 11490, Taiwan;
| | - Chang-Mei Lai
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 11490, Taiwan;
| | - Chih-Shung Wong
- Department of Anesthesiology, Cathay General Hospital, Taipei 10630, Taiwan;
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 11490, Taiwan;
- Correspondence: ; Tel.: +886-2-27082121
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20
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Pourhanifeh MH, Hosseinzadeh A, Dehdashtian E, Hemati K, Mehrzadi S. Melatonin: new insights on its therapeutic properties in diabetic complications. Diabetol Metab Syndr 2020; 12:30. [PMID: 32280378 PMCID: PMC7140344 DOI: 10.1186/s13098-020-00537-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/27/2020] [Indexed: 12/11/2022] Open
Abstract
Diabetes and diabetic complications are considered as leading causes of both morbidity and mortality in the world. Unfortunately, routine medical treatments used for affected patients possess undesirable side effects, including kidney and liver damages as well as gastrointestinal adverse reactions. Therefore, exploring the novel therapeutic strategies for diabetic patients is a crucial issue. It has been recently shown that melatonin, as main product of the pineal gland, despite its various pharmacological features including anticancer, anti-aging, antioxidant and anti-inflammatory effects, exerts anti-diabetic properties through regulating various cellular mechanisms. The aim of the present review is to describe potential roles of melatonin in the treatment of diabetes and its complications.
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Affiliation(s)
| | - Azam Hosseinzadeh
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ehsan Dehdashtian
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Karim Hemati
- Department of Anesthesiology, Iran University of Medical Sciences, Tehran, Iran
| | - Saeed Mehrzadi
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
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21
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Xie S, Fan W, He H, Huang F. Role of Melatonin in the Regulation of Pain. J Pain Res 2020; 13:331-343. [PMID: 32104055 PMCID: PMC7012243 DOI: 10.2147/jpr.s228577] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 01/20/2020] [Indexed: 12/15/2022] Open
Abstract
Melatonin is a pleiotropic hormone synthesized and secreted mainly by the pineal gland in vertebrates. Melatonin is an endogenous regulator of circadian and seasonal rhythms. Melatonin is involved in many physiological and pathophysiological processes demonstrating antioxidant, antineoplastic, anti-inflammatory, and immunomodulatory properties. Accumulating evidence has revealed that melatonin plays an important role in pain modulation through multiple mechanisms. In this review, we examine recent evidence for melatonin on pain regulation in various animal models and patients with pain syndromes, and the potential cellular mechanisms.
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Affiliation(s)
- Shanshan Xie
- Department of Pediatric Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People's Republic of China
| | - Wenguo Fan
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People's Republic of China.,Department of Anesthesiology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Hongwen He
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People's Republic of China.,Department of Oral Anatomy and Physiology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Fang Huang
- Department of Pediatric Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People's Republic of China
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22
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Kim JY, Park JH, Jeon EJ, Leem J, Park KK. Melatonin Prevents Transforming Growth Factor-β1-Stimulated Transdifferentiation of Renal Interstitial Fibroblasts to Myofibroblasts by Suppressing Reactive Oxygen Species-Dependent Mechanisms. Antioxidants (Basel) 2020; 9:antiox9010039. [PMID: 31906396 PMCID: PMC7022732 DOI: 10.3390/antiox9010039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 12/20/2019] [Accepted: 12/30/2019] [Indexed: 12/18/2022] Open
Abstract
Accumulating evidence suggests that the pineal hormone melatonin displays protective effects against renal fibrosis, but the mechanisms remain poorly understood. Here, we investigate the effect of the pineal hormone on transdifferentiation of renal fibroblasts to myofibroblasts invoked by transforming growth factor-β1 (TGF-β1). Increased proliferation and activation of renal interstitial fibroblasts after TGF-β1 treatment were attenuated by melatonin pretreatment. Mechanistically, melatonin suppressed Smad2/3 phosphorylation and nuclear co-localization of their phosphorylated forms and Smad4 after TGF-β1 stimulation. In addition, increased phosphorylations of Akt, extracellular signal-regulated kinase 1/2, and p38 after TGF-β1 treatment were also suppressed by the hormone. These effects of melatonin were not affected by pharmacological and genetic inhibition of its membrane receptors. Furthermore, melatonin significantly reversed an increase of intracellular reactive oxygen species (ROS) and malondialdehyde levels, and a decrease of the reduced glutathione/oxidized glutathione ratio after TGF-β1 treatment. Finally, TGF-β1-induced proliferation and activation were also suppressed by N-acetylcysteine. Altogether, these findings suggest that the pineal hormone melatonin prevents TGF-β1-induced transdifferentiation of renal interstitial fibroblasts to myofibroblasts via inhibition of Smad and non-Smad signaling cadcades by inhibiting ROS-mediated mechanisms in its receptor-independent manner.
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Affiliation(s)
- Jung-Yeon Kim
- Department of Immunology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea;
| | - Jae-Hyung Park
- Department of Physiology, School of Medicine, Keimyung University, Daegu 42601, Korea;
| | - Eon Ju Jeon
- Department of Internal Medicine, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea
- Correspondence: (E.J.J.); (J.L.)
| | - Jaechan Leem
- Department of Immunology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea;
- Correspondence: (E.J.J.); (J.L.)
| | - Kwan-Kyu Park
- Department of Pathology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea;
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23
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Kim JY, Park JH, Kim K, Leem J, Park KK. Melatonin Inhibits Transforming Growth Factor-β1-Induced Epithelial-Mesenchymal Transition in AML12 Hepatocytes. BIOLOGY 2019; 8:biology8040084. [PMID: 31717992 PMCID: PMC6956139 DOI: 10.3390/biology8040084] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/01/2019] [Accepted: 11/08/2019] [Indexed: 12/30/2022]
Abstract
Recent studies showed that melatonin, a well-known pineal hormone that modulates the circadian rhythm, exerts beneficial effects against liver fibrosis. However, mechanisms for its protective action against the fibrotic processes remain incompletely understood. Here, we aimed to explore the effects of the hormone on transforming growth factor-β1 (TGF-β1)-stimulated epithelial–mesenchymal transition (EMT) in AML12 hepatocytes. Pretreatment with melatonin dose-dependently reversed downregulation of an epithelial marker and upregulation of mesenchymal markers after TGF-β1 stimulation. Additionally, melatonin dose-dependently suppressed an increased phosphorylation of Smad2/3 after TGF-β1 treatment. Besides the canonical Smad signaling pathway, an increase in phosphorylation of extracellular signal-regulated kinase 1/2 and p38 was also dose-dependently attenuated by melatonin. The suppressive effect of the hormone on EMT stimulated by TGF-β1 was not affected by luzindole, an antagonist of melatonin membrane receptors, suggesting that its membrane receptors are not required for the inhibitory action of melatonin. Moreover, melatonin suppressed elevation of intracellular reactive oxygen species (ROS) levels in TGF-β1-treated cells. Finally, TGF-β1-stimulated EMT was also inhibited by the antioxidant N-acetylcysteine. Collectively, these results suggest that melatonin prevents TGF-β1-stimulated EMT through suppression of Smad and mitogen-activated protein kinase signaling cascades by deactivating ROS-dependent mechanisms in a membrane receptor-independent manner.
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Affiliation(s)
- Jung-Yeon Kim
- Department of Immunology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea;
| | - Jae-Hyung Park
- Department of Physiology, School of Medicine, Keimyung University, Daegu 42601, Korea; (J.-H.P.); (K.K.)
| | - Kiryeong Kim
- Department of Physiology, School of Medicine, Keimyung University, Daegu 42601, Korea; (J.-H.P.); (K.K.)
| | - Jaechan Leem
- Department of Immunology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea;
- Correspondence:
| | - Kwan-Kyu Park
- Department of Pathology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea;
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24
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Liu CH, Chang HM, Yang YS, Lin YT, Ho YJ, Tseng TJ, Lan CT, Li ST, Liao WC. Melatonin Promotes Nerve Regeneration Following End-to-Side Neurorrhaphy by Accelerating Cytoskeletal Remodeling via the Melatonin Receptor-dependent Pathway. Neuroscience 2019; 429:282-292. [PMID: 31689489 DOI: 10.1016/j.neuroscience.2019.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/20/2019] [Accepted: 09/10/2019] [Indexed: 12/29/2022]
Abstract
Acceleration of cytoskeletal remodeling in regenerated axons is crucial for a fully functional recovery following peripheral nerve injury (PNI). Melatonin plays important roles in cell differentiation and protection of cytoskeleton stability, thus, the present study aimed to investigate whether melatonin can enhance neurite outgrowth and promote cytoskeletal remodeling in a PNI animal model and in differentiated neurons. End-to-side neurorrhaphy (ESN) rat model was used for assessing cytoskeletal rearrangement in regenerated axon. Subject rats received 1 mg/kg/day melatonin injection for one month. The amplitude of compound muscle action potentials and the number of re-innervated motor end plates on target muscles were assessed to represent the functional recovery after ESN. Melatonin treatment enhanced functional recovery after ESN, compared to the saline treated group. Additionally, in spinal cord and peripheral nerve tissue, animals receiving melatonin displayed enhanced expression of GAP43 and β3-tubulin one month after ESN, and an increased number of re-innervated motor end plates on their target muscle. In vitro analysis revealed that melatonin treatment significantly promoted neurite outgrowth, and increased expression of melatonin receptors as well as β3-tubulin in mouse neuroblastoma Neuro-2a (N2a) cells. Treatment with a melatonin receptor antagonist, luzindole, significantly suppressed melatonin receptors and β3-tubulin expression. Importantly, we found that melatonin treatment suppressed activation of calmodulin-dependent protein kinase II (CaMKII) in vitro and in vivo, suggesting that the β3-tubulin remodeling may occur via CaMKII-mediated Ca2+ signaling. These results suggested that melatonin may promote functional recovery after PNI by accelerating cytoskeletal remodeling through the melatonin receptor-dependent pathway.
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Affiliation(s)
- Chiung-Hui Liu
- Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Medical Education, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Hung-Ming Chang
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yin-Shuo Yang
- Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Ta Lin
- Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Ying-Jui Ho
- Department of Psychology, Chung Shan Medical University, Taichung, Taiwan
| | - To-Jung Tseng
- Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chyn-Tair Lan
- Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shao-Ti Li
- Division of Radiation Oncology, Chung Shan University Hospital, Taichung, Taiwan
| | - Wen-Chieh Liao
- Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Medical Education, Chung Shan Medical University Hospital, Taichung, Taiwan.
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25
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Kuthati Y, Goutham Davuluri VN, Yang CP, Chang HC, Chang CP, Wong CS. Melatonin MT2 receptor agonist IIK-7 produces antinociception by modulation of ROS and suppression of spinal microglial activation in neuropathic pain rats. J Pain Res 2019; 12:2473-2485. [PMID: 31496789 PMCID: PMC6690853 DOI: 10.2147/jpr.s214671] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/20/2019] [Indexed: 01/08/2023] Open
Abstract
Background In recent years, several melatonin (MLT) receptor agonists have been approved by FDA for the treatment of sleep disorders and depression. Very few studies have shed light on their efficacy against neuropathic pain (NP). IIK-7 is an MT-2 agonist known to promote sleep. Whether IIK-7 suppresses NP has not been reported, and the signaling profile is unknown. Objective To investigate the effect of melatonin type 2 receptor agonist IIK-7 on partial sciatic nerve transection-induced NP in rats and elucidate the underlying molecular mechanisms. Methods NP was induced by the PSNT in the left leg of adult male Wistar rats. On post-transection day 7, rats were implanted with intrathecal (i.t) catheter connected to an infusion pump and divided in to four groups: sham-operated/vehicle, PSNT/vehicle, PSNT/0.5 μg/hr IIK-7 and PSNT/0.5 μg IIK-7/1 μg 4-p/hr. To test the MT-2 dependence on IIK-7 activity, the animals were implanted with a single i.t catheter and injected MT-2 antagonist 4-Phenyl-2-propionamidotetralin (4-p) 20 mins prior to IIK-7 injection on day 7 after PSNT. The antinociceptive response was measured using a mechanical paw withdrawal threshold. Activation of microglial cells and the expression of NP-associated proteins in the spinal cord dorsal horn was assessed by immunofluorescence assay (IFA) and Western blotting (WB). Reactive oxygen species (ROS) scavenging ability of IIK-7 was evaluated by using bone marrow-derived macrophages (BMDM). Results Treatment with the MT-2 agonist IIK-7 significantly alleviated PSNT-induced mechanical allodynia and glial activation along with the inhibition of P44/42 MAPK, HMGB-1, STAT3, iNOS and casp-3 proteins. Conclusion IIK-7 attenuates NP through the suppression of glial activation and suppression of proteins involved in inflammation and apoptosis. MT-2 receptor agonists may establish a promising and unique therapeutic approach for the treatment of NP.
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Affiliation(s)
- Yaswanth Kuthati
- Department of Anesthesiology, Cathy General Hospital, Taipei, Taiwan
| | | | - Chih-Ping Yang
- Department of Anesthesiology, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan
| | - Hsiao-Cheng Chang
- Department of Anesthesiology, Cathy General Hospital, Taipei, Taiwan
| | - Chih-Peng Chang
- Department of Microbiology & Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih Shung Wong
- Department of Anesthesiology, Cathy General Hospital, Taipei, Taiwan.,Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
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26
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Peres MF, Valença MM, Amaral FG, Cipolla-Neto J. Current understanding of pineal gland structure and function in headache. Cephalalgia 2019; 39:1700-1709. [PMID: 31370669 DOI: 10.1177/0333102419868187] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE The pineal gland plays an important role in biological rhythms, circadian and circannual variations, which are key aspects in several headache disorders. OVERVIEW Melatonin, the main pineal secreting hormone, has been extensively studied in primary and secondary headache disorders. Altered melatonin secretion occurs in many headache syndromes. Experimental data show pineal gland and melatonin both interfere in headache animal models, decreasing trigeminal activation. Melatonin has been shown to regulate CGRP and control its release. DISCUSSION Melatonin has been used successfully as a treatment for migraine, cluster headaches and other headaches. There is a rationale for including the pineal gland as a relevant brain structure in the mechanisms of headache pathophysiology, and melatonin as a treatment option in primary headache.
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Affiliation(s)
- Mario Fp Peres
- Hospital Israelita Albert Einstein, Sao Paolo, Brazil.,Instituto de Psiquiatria, Hospital das Clínicas da Faculdade de Medicina da USP, Pernambuco, Brazil
| | | | | | - José Cipolla-Neto
- Instituto de Ciencias Biomédicas, Universidade de São Paulo, São Paulo, Brazil
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27
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Dose-Dependent Effect of Hyperbaric Oxygen Treatment on Burn-Induced Neuropathic Pain in Rats. Int J Mol Sci 2019; 20:ijms20081951. [PMID: 31010055 PMCID: PMC6514672 DOI: 10.3390/ijms20081951] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/12/2019] [Accepted: 04/18/2019] [Indexed: 02/07/2023] Open
Abstract
Hyperbaric oxygen treatment (HBOT) has been used to reduce neuropathic pain. Melatonin and opioid receptors are involved in neuropathic pain, but it is not known if HBOT works through these pathways to achieve its antinociceptive effect. We divided anesthetized rats into two treatment and three sham groups. The two treatment groups received third-degree burns on their right hind paws, one treated in a hyperbaric chamber for a week and the other for two weeks. We evaluated the mechanical paw-withdrawal threshold (MWT) and expression of melatonin receptor 1 (MT1), melatonin receptor 2 (MT2), μ (MOR) and κ (KOR) opioid receptor, brain-derived neurotrophic factor (BDNF), Substance P, and calcitonin gene-related peptide (CGRP) in cuneate nucleus, dorsal horn, and hind paw skin by immunohistochemical, immunofluorescence assays and real-time quantitative polymerase chain reaction (RT-PCR). The group receiving one-week HBOT had increased expressions of MT1, MT2, MOR and KOR and decreased expressions of BDNF, Substance P, and CGRP. Their mechanically measured pain levels returned to normal within a week and lasted three weeks. This anti-allodynia effect lasted twice as long in those treated for two weeks. Our findings suggest that increasing the duration of HBOT can reduce burn-induced mechanical allodynia for an extended period of time in rats. The upregulation of melatonin and opioid receptors observed after one week of HBOT suggests they may be partly involved in attenuation of the mechanical allodynia. Downregulation of BDNF, substance P and CGRP may have also contributed to the overall beneficial effect of HBOT.
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28
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Wang R, Yuan J, Zhang C, Wang L, Liu Y, Song L, Zhong W, Chen X, Dong J. Neuropeptide Y-Positive Neurons in the Dorsomedial Hypothalamus Are Involved in the Anorexic Effect of Angptl8. Front Mol Neurosci 2018; 11:451. [PMID: 30618603 PMCID: PMC6305345 DOI: 10.3389/fnmol.2018.00451] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/21/2018] [Indexed: 12/22/2022] Open
Abstract
Angiopoietin-like protein 8 (Angptl8), a recently identified member of the angiopoietin-like protein family (ANGPTLs), is a 22-kDa peptide synthesized in the liver. It participates in lipid metabolism by inhibiting lipoprotein lipase (LPL) activity, consequently increasing the triglyceride levels. Despite evidence that Angptl8 is involved in feeding control, the underlying mechanisms are unclear. Central and peripheral injections of Angptl8 significantly decreased food intake. Angptl8 was widely expressed in appetite-related nuclei, including the paraventricular nucleus (PVN), the dorsomedial hypothalamus (DMH), the ventromedial hypothalamus, and the arcuate nucleus (ARC) in the hypothalamus. Peripheral Angptl8 administration decreased c-Fos-positive neurons in the DMH. Central Angptl8 administration decreased c-Fos-positive neurons in the DMH and PVN but increased these neurons in the ARC. Angptl8 inhibited appetite via neuropeptide Y (NPY) neurons in the DMH. Furthermore, the chronic administration of Angptl8 decreased body weight gain and altered adipose tissue deposits. Nevertheless, neither peripheral nor central Angptl8 influenced the brown adipose tissue (BAT) morphology or uncoupling protein 1 (Ucp-1) expression in BAT. Taken together, these data suggested that Angptl8 modulates appetite and energy homeostasis.
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Affiliation(s)
- Rui Wang
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China
| | - Junhua Yuan
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China
| | - Caishun Zhang
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China
| | - Liuxin Wang
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China
| | - Yuan Liu
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China
| | - Limin Song
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China
| | - Weizhen Zhong
- Institute of Foundation Medicine, Medical College, Qingdao University, Qingdao, China
| | - Xi Chen
- Department of Physiology, Medical College, Qingdao University, Qingdao, China
| | - Jing Dong
- Department of Special Medicine, Medical College, Qingdao University, Qingdao, China.,Department of Physiology, Medical College, Qingdao University, Qingdao, China
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29
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Serhatlioglu I, Bilgin B, Kacar E, Ozcan S, Canpolat S, Ayar A, Kelestimur H, Ozcan M. Agomelatine modulates calcium signaling through protein kinase C and phospholipase C-mediated mechanisms in rat sensory neurons. J Cell Physiol 2018; 234:10741-10746. [PMID: 30443943 DOI: 10.1002/jcp.27748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 10/22/2018] [Indexed: 01/06/2023]
Abstract
Agomelatine, a novel antidepressant exerting its effects through melatonergic and serotonergic systems, implicated to be effective against pain including neuropathic pain but without any knowledge of mechanism of action. To explore the possible role of agomelatine on nociceptive transmission at the peripheral level, the effects of agomelatine on intracellular calcium ([Ca2+ ]i ) signaling in peripheral neurons were investigated in cultured rat dorsal root ganglion (DRG) neurons. Using the fura-2-based calcium imaging technique, the effects of agomelatine on [Ca2+ ]i and roles of the second messenger-mediated pathways were assessed. Agomelatine caused [Ca2+ ]i signaling in a dose-dependent manner when tested at 10 and 100 μM concentration. Luzindole, a selective melatonin receptor antagonist, almost completely blocked the agomelatine-induced calcium signals. The agomelatine-induced calcium transients were also nearly abolished following pretreatment with the 100 ng/ml pertussis toxin, a Gi/o protein inhibitor. The stimulatory effects of agomelatine on [Ca2+ ]i transients were significantly reduced by applications of phospholipase C (PLC) and protein kinase C (PKC) blockers, 10 μM U73122, and 10 μM chelerythrine chloride, respectively. The obtained results of agomelatine-induced [Ca2+ ]i signals indicates that peripheral mechanisms are involved in analgesic effects of agomelatine. These mechanisms seems to involve G-protein-coupled receptor activation and PLC and PKC mediated mechanisms.
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Affiliation(s)
- Ihsan Serhatlioglu
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Batuhan Bilgin
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Emine Kacar
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Sibel Ozcan
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Sinan Canpolat
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ahmet Ayar
- Department of Physiology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Haluk Kelestimur
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Mete Ozcan
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
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30
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Kuthati Y, Lin SH, Chen IJ, Wong CS. Melatonin and their analogs as a potential use in the management of Neuropathic pain. J Formos Med Assoc 2018; 118:1177-1186. [PMID: 30316678 DOI: 10.1016/j.jfma.2018.09.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/02/2018] [Accepted: 09/19/2018] [Indexed: 12/14/2022] Open
Abstract
Melatonin (N-acetyl-5-methoxytryptamine), secreted by the pineal gland is known to perform multiple functions including, antioxidant, anti-hypertensive, anti-cancerous, immunomodulatory, sedative and tranquilizing functions. Melatonin is also known to be involved in the regulation of body mass index, control the gastrointestinal system and play an important role in cardioprotection, thermoregulation, and reproduction. Recently, several studies have reported the efficacy of Melatonin in treating various pain syndromes. The current paper reviews the studies on Melatonin and its analogs, particularly in Neuropathic pain. Here, we first briefly summarized research in preclinical studies showing the possible mechanisms through which Melatonin and its analogs induce analgesia in Neuropathic pain. Second, we reviewed research indicating the role of Melatonin in attenuating analgesic tolerance. Finally, we discussed the recent studies that reported novel Melatonin agonists, which were proven to be effective in treating Neuropathic pain.
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Affiliation(s)
- Yaswanth Kuthati
- Department of Anesthesiology, Cathay General Hospital, Taipei, Taiwan
| | - Sheng-Hsiung Lin
- Planning and Management Office, Tri-Service General Hospital, National Defense Medical Center, Taiwan
| | - Ing-Jung Chen
- Department of Anesthesiology, Cathay General Hospital, Taipei, Taiwan
| | - Chih-Shung Wong
- Department of Anesthesiology, Cathay General Hospital, Taipei, Taiwan; Planning and Management Office, Tri-Service General Hospital, National Defense Medical Center, Taiwan; Institute of Medical Sciences, National Defense Medical Center, Taiwan; Department of Anesthesiology, Tri-Service General Hospital, Taiwan.
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31
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Ozcan M, Canpolat S, Bulmus O, Ulker N, Tektemur A, Tekin S, Ozcan S, Serhatlioglu I, Kacar E, Ayar A, Kelestimur H. Agomelatine pretreatment prevents development of hyperglycemia and hypoinsulinemia in streptozotocin-induced diabetes in mice. Fundam Clin Pharmacol 2018; 33:170-180. [PMID: 30216538 DOI: 10.1111/fcp.12413] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/25/2018] [Accepted: 09/10/2018] [Indexed: 01/22/2023]
Abstract
The main objective of this study was to investigate potential effectiveness of agomelatine pretreatment in the prevention of diabetes itself and encephalopathy, with a focus on brain tissue oxidative stress and inflammatory processes in streptozotocin (STZ)-induced diabetic mice. Interleukine-1β (IL-1β) and TACR1 (NK1), which is a tachykinine receptor, were used for the investigation of inflammation in the brain regions including raphe nucleus, periaqueductal gyrus (PAG), amygdala, and nucleus accumbens. The effects of agomelatine on total antioxidant capacity were also evaluated. In the in vitro part of the study, the effects of agomelatine on cell viability were investigated in dorsal root ganglion (DRG) neurons. Fasting blood glucose levels were measured 72 h after STZ injection to determine the diabetic condition. Agomelatine pretreatment prevented both hyperglycemia and hypoinsulinemia in STZ-treated mice. When STZ was injected to induce diabetes in mice, neither hyperglycemia nor hypoinsulinemia was developed in agomelatine pretreated mice and 6 weeks after development of diabetes, agomelatine treatment significantly decreased levels of IL-1β mRNA in raphe nucleus and nucleus accumbens. TACR1 mRNA levels were lower in raphe nucleus, PAG, and amygdala of agomelatine-treated diabetic mice. The increase in total antioxidant capacity after agomelatine administration may responsible for its beneficial effect in the prevention of diabetes. We showed that agomelatine reversed high glucose-induced cell viability decreases in DRG neurons. Both the antihyperglycemic and antioxidant effects of agomelatine might have contributed to the DRG neuron viability improvement. In conclusion, agomelatine seems to both prevent development of diabetes and reverse the encephalopathic changes caused by diabetes.
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Affiliation(s)
- Mete Ozcan
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Sinan Canpolat
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ozgur Bulmus
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Nazife Ulker
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ahmet Tektemur
- Department of Medical Biology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Suat Tekin
- Department of Physiology, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Sibel Ozcan
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ihsan Serhatlioglu
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Emine Kacar
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ahmet Ayar
- Department of Physiology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Haluk Kelestimur
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
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32
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Gagnon K, Godbout R. Melatonin and Comorbidities in Children with Autism Spectrum Disorder. CURRENT DEVELOPMENTAL DISORDERS REPORTS 2018; 5:197-206. [PMID: 30148039 PMCID: PMC6096870 DOI: 10.1007/s40474-018-0147-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Melatonin is used to treat sleep difficulties associated with autism spectrum disorder (ASD). There are growing evidence that melatonin could have an effect on other symptoms than sleep, such as anxiety, depression, pain, and gastrointestinal dysfunctions. Interestingly, these symptoms frequently are found as comorbid conditions in individuals with ASD. We aimed to highlight the potential effect of melatonin on these symptoms. RECENT FINDINGS Animal and human studies show that melatonin reduces anxiety. Regarding the effect of melatonin on pain, animal studies are promising, but results remain heterogeneous in humans. Both animal and human studies have found that melatonin can have a positive effect on gastrointestinal dysfunction. SUMMARY Melatonin has the potential to act on a wide variety of symptoms associated with ASD. However, other than sleep difficulties, no studies exist on melatonin as a treatment for ASD comorbid conditions. Such investigations should be on the research agenda because melatonin could improve a multitude of ASD comorbidities and, consequently, improve well-being.
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Affiliation(s)
- Katia Gagnon
- Sleep Laboratory & Clinic, Hôpital Rivière-des-Prairies, CIUSSS du Nord-de-l’Île-de-Montréal, 7070 Boul. Perras, Montréal, Québec H1E 1A4 Canada
- Department of Psychiatry, Université de Montréal, Montréal, Québec Canada
| | - Roger Godbout
- Sleep Laboratory & Clinic, Hôpital Rivière-des-Prairies, CIUSSS du Nord-de-l’Île-de-Montréal, 7070 Boul. Perras, Montréal, Québec H1E 1A4 Canada
- Department of Psychiatry, Université de Montréal, Montréal, Québec Canada
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33
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Fan W, Yung BC, Chen X. Stimuliresponsive NO‐Freisetzung für die abrufbereite Gas‐sensibilisierte synergistische Krebstherapie. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800594] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wenpei Fan
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
| | - Bryant C. Yung
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
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34
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Fan W, Yung BC, Chen X. Stimuli‐Responsive NO Release for On‐Demand Gas‐Sensitized Synergistic Cancer Therapy. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201800594] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wenpei Fan
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
| | - Bryant C. Yung
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
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35
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Oliveira-Abreu K, Ferreira-da-Silva FW, Silva-Alves KSD, Silva-Dos-Santos NM, Cardoso-Teixeira AC, Amaral FGD, Cipolla-Neto J, Leal-Cardoso JH. Melatonin decreases neuronal excitability in a sub-population of dorsal root ganglion neurons. Brain Res 2018; 1692:1-8. [PMID: 29702086 DOI: 10.1016/j.brainres.2018.04.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 04/10/2018] [Accepted: 04/23/2018] [Indexed: 12/29/2022]
Abstract
Melatonin, a powerful antioxidant, participates in the regulation of important physiological and pathological processes. We investigated the actions of melatonin on neuronal excitability of intact dorsal root ganglions (DRG) from rats using intracellular recording techniques in current clamps. Melatonin blocked the generation of action potentials in a concentration-dependent manner. Bath applied melatonin (1.0-1000.0 nM) hyperpolarized the resting membrane potential, and increased the input resistance and rheobase. Melatonin also altered the active electrophysiological properties of the action potential, amplitude and maximum descendant inclination, in a statistically significant way. In order to provide evidence on the mechanism of action of melatonin in the DRG, quantitative PCR (qPCR) was performed. Analyses were performed for melatonin membrane receptors, MT1 and MT2, and it was observed that the DRG expresses MT1 receptors. In addition, we noted that the melatonin-induced effects were blocked in the presence of luzindole, a melatonin receptor antagonist. The minimal effective concentrations of melatonin (10.0 nM) and the blockade of effects caused by luzindole suggest that the effects of melatonin are hormonal, and are induced when it binds to MT1 receptors.
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Affiliation(s)
- Klausen Oliveira-Abreu
- Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
| | | | - Kerly Shamyra da Silva-Alves
- Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
| | - Nathalia Maria Silva-Dos-Santos
- Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
| | - Ana Carolina Cardoso-Teixeira
- Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
| | - Fernanda Gaspar do Amaral
- Laboratório de Neurobiologia, Instituto de Ciências Biomédicas 1, Universidade de São Paulo, São Paulo, SP, Brazil
| | - José Cipolla-Neto
- Laboratório de Neurobiologia, Instituto de Ciências Biomédicas 1, Universidade de São Paulo, São Paulo, SP, Brazil
| | - José Henrique Leal-Cardoso
- Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, CE, Brazil.
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36
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Zhang L, Yin JB, Hu W, Zhao WJ, Fan QR, Qiu ZC, He MJ, Ding T, Sun Y, Kaye AD, Wang ER. Analgesic Effects of Duloxetine on Formalin-Induced Hyperalgesia and Its Underlying Mechanisms in the CeA. Front Pharmacol 2018; 9:317. [PMID: 29692727 PMCID: PMC5902556 DOI: 10.3389/fphar.2018.00317] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/20/2018] [Indexed: 12/17/2022] Open
Abstract
In rodents, the amygdala has been proposed to serve as a key center for the nociceptive perception. Previous studies have shown that extracellular signal-regulated kinase (ERK) signaling cascade in the central nucleus of amygdala (CeA) played a functional role in inflammation-induced peripheral hypersensitivity. Duloxetine (DUL), a serotonin and noradrenaline reuptake inhibitor, produced analgesia on formalin-induced spontaneous pain behaviors. However, it is still unclear whether single DUL pretreatment influences formalin-induced hypersensitivity and what is the underlying mechanism. In the current study, we revealed that systemic pretreatment with DUL not only dose-dependently suppressed the spontaneous pain behaviors, but also relieved mechanical and thermal hypersensitivity induced by formalin hindpaw injection. Consistent with the analgesic effects of DUL on the pain behaviors, the expressions of Fos and pERK that were used to check the neuronal activities in the spinal cord and CeA were also dose-dependently reduced following DUL pretreatment. Meanwhile, no emotional aversive behaviors were observed at 24 h after formalin injection. The concentration of 5-HT in the CeA was correlated with the dose of DUL in a positive manner at 24 h after formalin injection. Direct injecting 5-HT into the CeA suppressed both the spontaneous pain behaviors and hyperalgesia induced by formalin injection. However, DUL did not have protective effects on the formalin-induced edema of hindpaw. In sum, the activation of CeA neurons may account for the transition from acute pain to long-term hyperalgesia after formalin injection. DUL may produce potent analgesic effects on the hyperalgesia and decrease the expressions of p-ERK through increasing the concentration of serotonin in the CeA.
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Affiliation(s)
- Lie Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Jun-Bin Yin
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China.,Department of Neurology, The 456th Hospital of PLA, Jinan, China.,Department of Human Anatomy, The Fourth Military Medical University, Xi'an, China
| | - Wei Hu
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China.,Department of Human Anatomy, The Fourth Military Medical University, Xi'an, China
| | - Wen-Jun Zhao
- Department of Human Anatomy, The Fourth Military Medical University, Xi'an, China
| | - Qing-Rong Fan
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Zhi-Chun Qiu
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Ming-Jie He
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Tan Ding
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yan Sun
- Cadet Bridge, The Fourth Military Medical University, Xi'an, China
| | - Alan D Kaye
- Departments of Anesthesiology and Pharmacology, Louisiana State University School of Medicine, New Orleans, LA, United States
| | - En-Ren Wang
- Department of Neurosurgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
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