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Liu Z, Liu W, Han M, Wang M, Li Y, Yao Y, Duan Y. A comprehensive review of natural product-derived compounds acting on P2X7R: The promising therapeutic drugs in disorders. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 128:155334. [PMID: 38554573 DOI: 10.1016/j.phymed.2023.155334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 12/30/2023] [Indexed: 04/01/2024]
Abstract
BACKGROUND The P2X7 receptor (P2X7R) is known to play a significant role in regulating various pathological processes associated with immune regulation, neuroprotection, and inflammatory responses. It has emerged as a potential target for the treatment of diseases. In addition to chemically synthesized small molecule compounds, natural products have gained attention as an important source for discovering compounds that act on the P2X7R. PURPOSE To explore the research progress made in the field of natural product-derived compounds that act on the P2X7R. METHODS The methods employed in this review involved conducting a thorough search of databases, include PubMed, Web of Science and WIKTROP, to identify studies on natural product-derived compounds that interact with P2X7R. The selected studies were then analyzed to categorize the compounds based on their action on the receptor and to evaluate their therapeutic applications, chemical properties, and pharmacological actions. RESULTS The natural product-derived compounds acting on P2X7R can be classified into three categories: P2X7R antagonists, compounds inhibiting P2X7R expression, and compounds regulating the signaling pathway associated with P2X7R. Moreover, highlight the therapeutic applications, chemical properties and pharmacological actions of these compounds, and indicate areas that require further in-depth study. Finally, discuss the challenges of the natural products-derived compounds exploration, although utilizing compounds from natural products for new drug research offers unique advantages, problems related to solubility, content, and extraction processes still exist. CONCLUSION The detailed information in this review will facilitate further development of P2X7R antagonists and potential therapeutic strategies for P2X7R-associated disorders.
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Affiliation(s)
- Zhenling Liu
- Children's Hospital Affiliated to Zhengzhou University, Zhengzhou University, Zhengzhou 450018, China
| | - Wenjin Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Mengyao Han
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Mingzhu Wang
- Children's Hospital Affiliated to Zhengzhou University, Zhengzhou University, Zhengzhou 450018, China
| | - Yinchao Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China.
| | - Yongfang Yao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; Pingyuan Laboratory (Zhengzhou University), Zhengzhou 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou 450001, China.
| | - Yongtao Duan
- Children's Hospital Affiliated to Zhengzhou University, Zhengzhou University, Zhengzhou 450018, China; Henan International Joint Laboratory of Prevention and Treatment of Pediatric Diseases, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou University, Zhengzhou 450018, China; Henan Neurodevelopment Engineering Research Center for Children, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou University, Zhengzhou 450018, China.
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Li D, Du H, Qu ST, Wu JL, Li YC, Xu QY, Chen X, Dai XX, Xu JT, Wang Q, Xu GY. Thalamic Nucleus Reuniens Glutamatergic Neurons Mediate Colorectal Visceral Pain in Mice via 5-HT 2B Receptors. Neurosci Bull 2024:10.1007/s12264-024-01207-0. [PMID: 38739251 DOI: 10.1007/s12264-024-01207-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/26/2023] [Indexed: 05/14/2024] Open
Abstract
Irritable bowel syndrome (IBS) is a common functional bowel disorder characterized by abdominal pain and visceral hypersensitivity. Reducing visceral hypersensitivity is the key to effectively relieving abdominal pain in IBS. Increasing evidence has confirmed that the thalamic nucleus reuniens (Re) and 5-hydroxytryptamine (5-HT) neurotransmitter system play an important role in the development of colorectal visceral pain, whereas the exact mechanisms remain largely unclear. In this study, we found that high expression of the 5-HT2B receptors in the Re glutamatergic neurons promoted colorectal visceral pain. Specifically, we found that neonatal maternal deprivation (NMD) mice exhibited visceral hyperalgesia and enhanced spontaneous synaptic transmission in the Re brain region. Colorectal distension (CRD) stimulation induced a large amount of c-Fos expression in the Re brain region of NMD mice, predominantly in glutamatergic neurons. Furthermore, optogenetic manipulation of glutamatergic neuronal activity in the Re altered colorectal visceral pain responses in CON and NMD mice. In addition, we demonstrated that 5-HT2B receptor expression on the Re glutamatergic neurons was upregulated and ultimately promoted colorectal visceral pain in NMD mice. These findings suggest a critical role of the 5HT2B receptors on the Re glutamatergic neurons in the regulation of colorectal visceral pain.
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Affiliation(s)
- Di Li
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Han Du
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Shu-Ting Qu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, 215123, China
| | - Jing-Lai Wu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Yong-Chang Li
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Qi-Ya Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Xia Chen
- Department of Anesthesiology, Children's Hospital of Soochow University, Suzhou, 215123, China
| | - Xiao-Xuan Dai
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Ji-Tian Xu
- Department of Physiology and Neurobiology, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Qian Wang
- Department of Anesthesiology, Children's Hospital of Soochow University, Suzhou, 215123, China.
| | - Guang-Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China.
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Zhang F, Wei Y, Weng R, Xu Q, Li R, Yu Y, Xu G. Paraventricular thalamus-insular cortex circuit mediates colorectal visceral pain induced by neonatal colonic inflammation in mice. CNS Neurosci Ther 2024; 30:e14534. [PMID: 37994678 PMCID: PMC11017444 DOI: 10.1111/cns.14534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 11/24/2023] Open
Abstract
AIMS Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder, but its pathogenesis remains incompletely understood, particularly the involvements of central nervous system sensitization in colorectal visceral pain. Our study was to investigate whether the paraventricular thalamus (PVT) projected to the insular cortex (IC) to regulate colorectal visceral pain in neonatal colonic inflammation (NCI) mice and underlying mechanisms. METHODS We applied optogenetic, chemogenetic, or pharmacological approaches to manipulate the glutamatergicPVT-IC pathway. Fiber photometry was used to assess neuronal activity. Electromyography activities in response to colorectal distension (CRD) were measured to evaluate the colorectal visceral pain. RESULTS NCI enhanced c-Fos expression and calcium activity upon CRD in the ICGlu, and optogenetic manipulation of them altered colorectal visceral pain responses accordingly. Viral tracing indicated that the PVTGlu projected to the ICGlu. Optogenetic manipulation of PVTGlu changed colorectal visceral pain responses. Furthermore, selective optogenetic modulation of PVT projections in the IC influenced colorectal visceral pain, which was reversed by chemogenetic manipulation of downstream ICGlu. CONCLUSIONS This study identified a novel PVT-IC neural circuit playing a critical role in colorectal visceral pain in a mouse model of IBS.
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Affiliation(s)
- Fu‐Chao Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuP. R. China
| | - Ying‐Xue Wei
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuP. R. China
| | - Rui‐Xia Weng
- Department of GastroenterologyThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsuP. R. China
| | - Qi‐Ya Xu
- Department of AnesthesiologyThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsuP. R. China
| | - Rui Li
- Department of GastroenterologyThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsuP. R. China
| | - Yang Yu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuP. R. China
| | - Guang‐Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuP. R. China
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Sun Q, Weng RX, Li JH, Li YC, Xu JT, Li R, Lu X, Xu GY. Rab27a-mediated exosome secretion in anterior cingulate cortex contributes to colorectal visceral pain in adult mice with neonatal maternal deprivation. Am J Physiol Gastrointest Liver Physiol 2023; 325:G356-G367. [PMID: 37529842 DOI: 10.1152/ajpgi.00029.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/03/2023]
Abstract
Chronic visceral pain is a common symptom of irritable bowel syndrome (IBS). Exosomes are involved in the development of pain. Rab27a can mediate the release of exosomes. The purpose of this study is to investigate how Rab27a-mediated exosome secretion in the anterior cingulate cortex (ACC) regulates visceral hyperalgesia induced with neonatal maternal deprivation (NMD) in adult mice. The colorectal distension method was adopted to measure visceral pain. The BCA protein assay kit was applied to detect the exosome protein concentration. Western blotting, quantitative PCR, and immunofluorescence technique were adopted to detect the expression of Rab27a and the markers of exosomes. Exosomes extracted from ACC were more in NMD mice than in control (CON) mice. Injection of the exosome-specific inhibitor GW4869 in ACC attenuated colorectal visceral pain of NMD mice. Injection of NMD-derived exosomes produced colorectal visceral pain in CON mice. Rab27a was upregulated in ACC of NMD mice. Rab27a was highly expressed in ACC neurons of NMD mice, rather than astrocytes and microglia. Injection of Rab27a-siRNA reduced the release of exosomes and attenuated the colorectal visceral pain in NMD mice. This study suggested that overexpression of Rab27a increased exosome secretion in ACC neurons, thus contributing to visceral hyperalgesia in NMD mice.NEW & NOTEWORTHY This work demonstrated that the expression of Rab27a in the anterior cingulate cortex was upregulated, which mediated multivesicular bodies trafficking to the plasma membrane and led to the increased release of neuronal exosomes, thus contributing to colorectal visceral pain in neonatal maternal deprivation (NMD) mice. Blocking the release of exosomes or downregulation of Rab27a could alleviate colorectal visceral pain in NMD mice. These data may provide a promising strategy for the treatment of visceral pain in irritable bowel syndrome patients.
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Affiliation(s)
- Qian Sun
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
| | - Rui-Xia Weng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jia-Hui Li
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
| | - Yong-Chang Li
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
| | - Ji-Tian Xu
- Department of Physiology and Neurobiology, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, People's Republic of China
| | - Rui Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Xiaomin Lu
- Department of Oncology, Hai'an People's Hospital, Nantong, People's Republic of China
| | - Guang-Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
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Wang H, Zhang F, Xu TW, Xu Y, Tian Y, Wu Y, Xu J, Hu S, Xu G. DNMT1 involved in the analgesic effect of folic acid on gastric hypersensitivity through downregulating ASIC1 in adult offspring rats with prenatal maternal stress. CNS Neurosci Ther 2023; 29:1678-1689. [PMID: 36852448 PMCID: PMC10173708 DOI: 10.1111/cns.14131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/30/2022] [Accepted: 12/10/2022] [Indexed: 03/01/2023] Open
Abstract
AIMS Gastric hypersensitivity (GHS) is a characteristic pathogenesis of functional dyspepsia (FD). DNA methyltransferase 1 (DNMT1) and acid-sensing ion channel 1 (ASIC1) are associated with GHS induced by prenatal maternal stress (PMS). The aim of this study was to investigate the mechanism of DNMT1 mediating the analgesic effect of folic acid (FA) on PMS-induced GHS. METHODS GHS was quantified by electromyogram recordings. The expression of DNMT1, DNMT3a, DNMT3b, and ASIC1 were detected by western blot, RT-PCR, and double-immunofluorescence. Neuronal excitability and proton-elicited currents of dorsal root ganglion (DRG) neurons were determined by whole-cell patch clamp recordings. RESULTS The expression of DNMT1, but not DNMT3a or DNMT3b, was decreased in DRGs of PMS rats. FA alleviated PMS-induced GHS and hyperexcitability of DRG neurons. FA also increased DNMT1 and decreased ASIC1 expression and sensitivity. Intrathecal injection of DNMT1 inhibitor DC-517 attenuated the effect of FA on GHS alleviation and ASIC1 downregulation. Overexpression of DNMT1 with lentivirus not only rescued ASIC1 upregulation and hypersensitivity, but also alleviated GHS and hyperexcitability of DRG neurons induced by PMS. CONCLUSIONS These results indicate that increased DNMT1 contributes to the analgesic effect of FA on PMS-induced GHS by reducing ASIC1 expression and sensitivity.
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Affiliation(s)
- Hong‐Jun Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
- Jiangsu Key Laboratory of Anesthesiology & Jiangsu Key Laboratory of Anesthesia and Analgesia Application TechnologyXuzhou Medical UniversityXuzhouChina
| | - Fu‐Chao Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
| | - Timothy W. Xu
- Suzhou Academy of Xi'an Jiaotong UniversitySuzhouChina
| | - Yu‐Cheng Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
| | - Yuan‐Qing Tian
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
| | - Yan‐Yan Wu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
| | - Ji‐Tian Xu
- Department of Physiology and NeurobiologyCollege of Basic Medical Sciences, Zhengzhou UniversityZhengzhouChina
| | - Shufen Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
| | - Guang‐Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of NeuroscienceSoochow UniversitySuzhouJiangsuChina
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Qi L, Lin SH, Ma Q. Spinal VGLUT3 lineage neurons drive visceral mechanical allodynia but not sensitized visceromotor reflexes. Neuron 2023; 111:669-681.e5. [PMID: 36584681 DOI: 10.1016/j.neuron.2022.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 09/08/2022] [Accepted: 11/30/2022] [Indexed: 12/30/2022]
Abstract
Visceral pain is among the most prevalent and bothersome forms of chronic pain, but their transmission in the spinal cord is still poorly understood. Here, we conducted focal colorectal distention (fCRD) to drive both visceromotor responses (VMRs) and aversion. We first found that spinal CCK neurons were necessary for noxious fCRD to drive both VMRs and aversion under naive conditions. We next showed that spinal VGLUT3 neurons mediate visceral allodynia, whose ablation caused loss of aversion evoked by low-intensity fCRD in mice with gastrointestinal (GI) inflammation or spinal circuit disinhibition. Importantly, these neurons were dispensable for driving sensitized VMRs under both inflammatory and central disinhibition conditions. Anatomically, a subset of VGLUT3 neurons projected to parabrachial nuclei, whose photoactivation sufficiently generated aversion in mice with GI inflammation, without influencing VMRs. Our studies suggest the presence of different spinal substrates that transmit nociceptive versus affective dimensions of visceral sensory information.
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Affiliation(s)
- Lu Qi
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Shing-Hong Lin
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Qiufu Ma
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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Huang N, Liao P, Zuo Y, Zhang L, Jiang R. Design, Synthesis, and Biological Evaluation of a Potent Dual EZH2-BRD4 Inhibitor for the Treatment of Some Solid Tumors. J Med Chem 2023; 66:2646-2662. [PMID: 36774555 DOI: 10.1021/acs.jmedchem.2c01607] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Enhancer of zeste homolog 2 (EZH2) mediates the trimethylation of histone 3 lysine 27 (H3K27) to promote gene silencing. Inhibition of EZH2 is a viable strategy for cancer treatment; however, only a small subset of hematological malignancies are sensitive to small-molecule EZH2 inhibitors. EZH2 inhibitors cause H3K27 acetylation in most solid tumors, leading to drug resistance. Bromodomain-containing protein 4 (BRD4) inhibitors were reported to enhance the sensitivity of solid tumors to EZH2 inhibitors. Thus, we designed and evaluated a series of dual EZH2-BRD4 inhibitors. ZLD-2, the most promising compound, exhibited potent inhibitory activity against EZH2 and BRD4. Compared to the EZH2 inhibitor GSK126, ZLD-2 displayed potent antiproliferation activity against breast, lung, bladder, and pancreatic cancer cells. In vivo, ZLD-2 exhibited antitumor activity in a BxPC-3 mouse xenograft model, whereas GSK126 promoted tumor growth. Thus, ZLD-2 may be a lead compound for treating solid tumors.
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Affiliation(s)
- Niannian Huang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Ping Liao
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Yunxia Zuo
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Lidan Zhang
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Ruotian Jiang
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610000, China
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Weng RX, Wei YX, Li YC, Xu X, Zhuang JB, Xu GY, Li R. Folic acid attenuates chronic visceral pain by reducing clostridiales abundance and hydrogen sulfide production. Mol Pain 2023; 19:17448069221149834. [PMID: 36550612 PMCID: PMC9830571 DOI: 10.1177/17448069221149834] [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] [Indexed: 12/24/2022] Open
Abstract
Irritable bowel syndrome (IBS) related chronic visceral pain affects 20% of people worldwide. The treatment options are very limited. Although the scholarly reviews have appraised the potential effects of the intestinal microbiota on intestinal motility and sensation, the exact mechanism of intestinal microbiota in IBS-like chronic visceral pain remains largely unclear. The purpose of this study is to investigate whether Folic Acid (FA) attenuated visceral pain and its possible mechanisms. Chronic visceral hyperalgesia was induced in rats by neonatal colonic inflammation (NCI). 16S rDNA analysis of fecal samples from human subjects and rats was performed. Patch clamp recording was used to determine synaptic transmission of colonic-related spinal dorsal horn. Alpha diversity of intestinal flora was increased in patients with IBS, as well as the obviously increased abundance of Clostridiales order (a main bacteria producing hydrogen sulfide). The hydrogen sulfide content was positive correlation with visceral pain score in patients with IBS. Consistently, NCI increased Clostridiales frequency and hydrogen sulfide content in feces of adult rats. Notably, the concentration of FA was markedly decreased in peripheral blood of IBS patients compared with non-IBS human subjects. FA supplement alleviated chronic visceral pain and normalized the Clostridiales frequency in NCI rats. In addition, FA supplement significantly reduced the frequency of sEPSCs of neurons in the spinal dorsal horn of NCI rats. Folic Acid treatment attenuated chronic visceral pain of NCI rats through reducing hydrogen sulfide production from Clostridiales in intestine.
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Affiliation(s)
- Rui-Xia Weng
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, P. R. China,Institute of Neuroscience, Soochow University, Suzhou, P. R. China,Department of Gastroenterology, The People’s Hospital of Suzhou New District, Suzhou, P. R. China
| | - Ying-Xue Wei
- Institute of Neuroscience, Soochow University, Suzhou, P. R. China
| | - Yong-Chang Li
- Institute of Neuroscience, Soochow University, Suzhou, P. R. China
| | - Xue Xu
- Department of Gastroenterology, The People’s Hospital of Suzhou New District, Suzhou, P. R. China
| | - Jian-Bo Zhuang
- Department of Gastroenterology, The People’s Hospital of Suzhou New District, Suzhou, P. R. China
| | - Guang-Yin Xu
- Institute of Neuroscience, Soochow University, Suzhou, P. R. China,Guang-Yin Xu, Center for Translational Pain Medicine, Institute of Neuroscience, Soochow University, 199 Renai Rd, Suzhou 215123, P. R. China.
| | - Rui Li
- Guang-Yin Xu, Center for Translational Pain Medicine, Institute of Neuroscience, Soochow University, 199 Renai Rd, Suzhou 215123, P. R. China.
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Fang XX, Zhai MN, Zhu M, He C, Wang H, Wang J, Zhang ZJ. Inflammation in pathogenesis of chronic pain: Foe and friend. Mol Pain 2023; 19:17448069231178176. [PMID: 37220667 DOI: 10.1177/17448069231178176] [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] [Indexed: 05/25/2023] Open
Abstract
Chronic pain is a refractory health disease worldwide causing an enormous economic burden on individuals and society. Accumulating evidence suggests that inflammation in the peripheral nervous system (PNS) and central nervous system (CNS) is the major factor in the pathogenesis of chronic pain. The inflammation in the early- and late phase may have distinctive effects on the initiation and resolution of pain, which can be viewed as friend or foe. On the one hand, painful injuries lead to the activation of glial cells and immune cells in the PNS, releasing pro-inflammatory mediators, which contribute to the sensitization of nociceptors, leading to chronic pain; neuroinflammation in the CNS drives central sensitization and promotes the development of chronic pain. On the other hand, macrophages and glial cells of PNS and CNS promote pain resolution via anti-inflammatory mediators and specialized pro-resolving mediators (SPMs). In this review, we provide an overview of the current understanding of inflammation in the deterioration and resolution of pain. Further, we summarize a number of novel strategies that can be used to prevent and treat chronic pain by controlling inflammation. This comprehensive view of the relationship between inflammation and chronic pain and its specific mechanism will provide novel targets for the treatment of chronic pain.
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Affiliation(s)
- Xiao-Xia Fang
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
| | - Meng-Nan Zhai
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
| | - Meixuan Zhu
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Cheng He
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
| | - Heng Wang
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
| | - Juan Wang
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
| | - Zhi-Jun Zhang
- Department of Human Anatomy, School of Medicine, Nantong University, Nantong, China
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Ji RR. Third Special Issue on Mechanisms of Pain and Itch. Neurosci Bull 2022; 38:339-341. [PMID: 35467251 PMCID: PMC9068844 DOI: 10.1007/s12264-022-00851-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Ru-Rong Ji
- Department of Anesthesiology and Neurobiology, Center for Translational Pain Medicine, Duke University Medical Center, Durham, NC, 27710, USA.
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