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Liao X, Liu J, Guo X, Meng R, Zhang W, Zhou J, Xie X, Zhou H. Origin and Function of Monocytes in Inflammatory Bowel Disease. J Inflamm Res 2024; 17:2897-2914. [PMID: 38764499 PMCID: PMC11100499 DOI: 10.2147/jir.s450801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 04/23/2024] [Indexed: 05/21/2024] Open
Abstract
Inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), is a chronic disease resulting from the interaction of various factors such as social elements, autoimmunity, genetics, and gut microbiota. Alarmingly, recent epidemiological data points to a surging incidence of IBD, underscoring an urgent imperative: to delineate the intricate mechanisms driving its onset. Such insights are paramount, not only for enhancing our comprehension of IBD pathogenesis but also for refining diagnostic and therapeutic paradigms. Monocytes, significant immune cells derived from the bone marrow, serve as precursors to macrophages (Mφs) and dendritic cells (DCs) in the inflammatory response of IBD. Within the IBD milieu, their role is twofold. On the one hand, monocytes are instrumental in precipitating the disease's progression. On the other hand, their differentiated offsprings, namely moMφs and moDCs, are conspicuously mobilized at inflammatory foci, manifesting either pro-inflammatory or anti-inflammatory actions. The phenotypic spectrum of these effector cells, intriguingly, is modulated by variables such as host genetics and the subtleties of the prevailing inflammatory microenvironment. Notwithstanding their significance, a palpable dearth exists in the literature concerning the roles and mechanisms of monocytes in IBD pathogenesis. This review endeavors to bridge this knowledge gap. It offers an exhaustive exploration of monocytes' origin, their developmental trajectory, and their differentiation dynamics during IBD. Furthermore, it delves into the functional ramifications of monocytes and their differentiated progenies throughout IBD's course. Through this lens, we aspire to furnish novel perspectives into IBD's etiology and potential therapeutic strategies.
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Affiliation(s)
- Xiping Liao
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
| | - Ji Liu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, People’s Republic of China
| | - Xiaolong Guo
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
| | - Ruiping Meng
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
| | - Wei Zhang
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
| | - Jianyun Zhou
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
| | - Xia Xie
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
| | - Hongli Zhou
- Clinical Medical Research Center, the Second Affiliated Hospital, Army Medical University, Chongqing, People’s Republic of China
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Kurata-Sato I, Mughrabi IT, Rana M, Gerber M, Al-Abed Y, Sherry B, Zanos S, Diamond B. Vagus nerve stimulation modulates distinct acetylcholine receptors on B cells and limits the germinal center response. SCIENCE ADVANCES 2024; 10:eadn3760. [PMID: 38669336 PMCID: PMC11051663 DOI: 10.1126/sciadv.adn3760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
Acetylcholine is produced in the spleen in response to vagus nerve activation; however, the effects on antibody production have been largely unexplored. Here, we use a chronic vagus nerve stimulation (VNS) mouse model to study the effect of VNS on T-dependent B cell responses. We observed lower titers of high-affinity IgG and fewer antigen-specific germinal center (GC) B cells. GC B cells from chronic VNS mice exhibited altered mRNA and protein expression suggesting increased apoptosis and impaired plasma cell differentiation. Follicular dendritic cell (FDC) cluster dispersal and altered gene expression suggested poor function. The absence of acetylcholine-producing CD4+ T cells diminished these alterations. In vitro studies revealed that α7 and α9 nicotinic acetylcholine receptors (nAChRs) directly regulated B cell production of TNF, a cytokine crucial to FDC clustering. α4 nAChR inhibited coligation of CD19 to the B cell receptor, presumably decreasing B cell survival. Thus, VNS-induced GC impairment can be attributed to distinct effects of nAChRs on B cells.
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Affiliation(s)
- Izumi Kurata-Sato
- Center for Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Ibrahim T. Mughrabi
- Institute of Bioelectronic Medicine, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Minakshi Rana
- Center for Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Michael Gerber
- Institute of Bioelectronic Medicine, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA
| | - Yousef Al-Abed
- Institute of Bioelectronic Medicine, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Barbara Sherry
- Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Stavros Zanos
- Institute of Bioelectronic Medicine, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA
- Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, USA
| | - Betty Diamond
- Center for Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
- Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
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Hesampour F, Bernstein CN, Ghia JE. Brain-Gut Axis: Invasive and Noninvasive Vagus Nerve Stimulation, Limitations, and Potential Therapeutic Approaches. Inflamm Bowel Dis 2024; 30:482-495. [PMID: 37738641 DOI: 10.1093/ibd/izad211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Indexed: 09/24/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic relapsing condition with no known etiology and is characterized by disrupted gut homeostasis, chronic inflammation, and ulcerative lesions. Although current treatments can reduce disease activity, IBD frequently recurs once treatments are discontinued, indicating that treatments are ineffective in providing long-term remission. The lack of responsiveness and reluctance of some affected persons to take medications because of potential adverse effects has enhanced the need for novel therapeutic approaches. The vagus nerve (VN) is likely important in the pathogenesis of IBD, considering the decreased activity of the parasympathetic nervous system, especially the VN, and the impaired interaction between the enteric nervous system and central nervous system in patients with IBD. Vagus nerve stimulation (VNS) has demonstrated anti-inflammatory effects in various inflammatory disorders, including IBD, by inhibiting the production of inflammatory cytokines by immune cells. It has been suggested that stimulating the vagus nerve to induce its anti-inflammatory effects may be a potential therapeutic approach for IBD. Noninvasive techniques for VNS have been developed. Considering the importance of VN function in the brain-gut axis, VNS is a promising treatment option for IBD. This review discusses the potential therapeutic advantages and drawbacks of VNS, particularly the use of noninvasive transcutaneous auricular vagus nerve stimulation.
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Affiliation(s)
| | - Charles N Bernstein
- Internal Medicine, University of Manitoba, Winnipeg, Canada
- Inflammatory Bowel Disease Clinical and Research Centre, University of Manitoba, Winnipeg, Canada
| | - Jean-Eric Ghia
- Immunology, University of Manitoba, Winnipeg, Canada
- Internal Medicine, University of Manitoba, Winnipeg, Canada
- Inflammatory Bowel Disease Clinical and Research Centre, University of Manitoba, Winnipeg, Canada
- Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
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Sahn B, Pascuma K, Kohn N, Tracey KJ, Markowitz JF. Transcutaneous auricular vagus nerve stimulation attenuates inflammatory bowel disease in children: a proof-of-concept clinical trial. Bioelectron Med 2023; 9:23. [PMID: 37849000 PMCID: PMC10583463 DOI: 10.1186/s42234-023-00124-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/11/2023] [Indexed: 10/19/2023] Open
Abstract
BACKGROUND Vagus nerve stimulation is an investigational anti-inflammatory therapy targeting the nervous system to modulate immune activity. This study evaluated the efficacy and safety of transcutaneous auricular VNS (ta-VNS) in patients with pediatric-onset Crohn's disease (CD) or ulcerative colitis (UC). METHODS Participants were 10-21 years of age with mild/moderate CD or UC and fecal calprotectin (FC) > 200 ug/g within 4 weeks of study entry. Subjects were randomized to receive either ta-VNS targeting the cymba conchae of the external left ear, or sham stimulation, of 5 min duration once daily for a 2-week period, followed by a cross over to the alternative stimulation for an additional 2 weeks. At week 4, all subjects received ta-VNS of 5 min duration twice daily until week 16. Primary study endpoints were clinical remission, and a ≥ 50% reduction in FC level from baseline to week 16. Heart rate variability measurements and patient-reported outcome questionnaires were completed during interval and week 16 assessments. RESULTS Twenty-two subjects were enrolled and analyzed (10 CD, 12 UC). Six of 10 with CD had a wPCDAI > 12.5 and 6/12 with UC had a PUCAI > 10 at baseline, correlating to mild to moderate symptom activity. Among the 12 subjects with active symptomatic disease indices at baseline, clinical remission was achieved in 3/6 (50%) with CD and 2/6 (33%) with UC at week 16. Despite all subjects having FC levels ≥ 200 within 4 weeks of enrollment, five subjects (4 UC, 1 CD) had FC levels < 200 at the baseline visit and were excluded from the FC analysis. Of the remaining 17, median baseline FC was 907 µg/g (IQR 411-2,120). At week 16, 11/17 (64.7%) of those with baseline FC ≥ 200 had a ≥ 50% reduction in FC (95% CI 38.3-85.8). In the UC subjects, there was an 81% median reduction in FC vs baseline (833 µg/g; p = 0.03) while in the CD subjects, median reduction in FC at 16 weeks was 51% (357 µg/g; p = 0.09). There were no safety concerns. CONCLUSION Noninvasive ta-VNS attenuated signs and symptoms in a pediatric cohort with mild to moderate inflammatory bowel disease. TRIAL REGISTRATION NCT03863704-Date of registration 3/4/2019.
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Affiliation(s)
- Benjamin Sahn
- Division of Pediatric Gastroenterology, Liver Diseases, & Nutrition, Steven & Alexandra Cohen Children's Medical Center, Northwell Health, 1991 Marcus Ave, Suite M100, New Hyde Park, NY, 11042, USA.
- Feinstein Institutes for Medical Research, Manhasset, NY, USA.
| | - Kristine Pascuma
- Division of Pediatric Gastroenterology, Liver Diseases, & Nutrition, Steven & Alexandra Cohen Children's Medical Center, Northwell Health, 1991 Marcus Ave, Suite M100, New Hyde Park, NY, 11042, USA
| | - Nina Kohn
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Biostatistics Unit, Office of Academic Affairs, New Hyde Park, NY, USA
| | - Kevin J Tracey
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - James F Markowitz
- Division of Pediatric Gastroenterology, Liver Diseases, & Nutrition, Steven & Alexandra Cohen Children's Medical Center, Northwell Health, 1991 Marcus Ave, Suite M100, New Hyde Park, NY, 11042, USA
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Leyderman M, Wilmore JR, Shope T, Cooney RN, Urao N. Impact of intestinal microenvironments in obesity and bariatric surgery on shaping macrophages. IMMUNOMETABOLISM (COBHAM, SURREY) 2023; 5:e00033. [PMID: 38037591 PMCID: PMC10683977 DOI: 10.1097/in9.0000000000000033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/26/2023] [Indexed: 12/02/2023]
Abstract
Obesity is associated with alterations in tissue composition, systemic cellular metabolism, and low-grade chronic inflammation. Macrophages are heterogenous innate immune cells ubiquitously localized throughout the body and are key components of tissue homeostasis, inflammation, wound healing, and various disease states. Macrophages are highly plastic and can switch their phenotypic polarization and change function in response to their local environments. Here, we discuss how obesity alters the intestinal microenvironment and potential key factors that can influence intestinal macrophages as well as macrophages in other organs, including adipose tissue and hematopoietic organs. As bariatric surgery can induce metabolic adaptation systemically, we discuss the potential mechanisms through which bariatric surgery reshapes macrophages in obesity.
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Affiliation(s)
- Michael Leyderman
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Joel R. Wilmore
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, NY, USA
- Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Timothy Shope
- Department of Surgery, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Robert N. Cooney
- Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY, USA
- Department of Surgery, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Norifumi Urao
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY, USA
- Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY, USA
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Nakamura Y, Matsumoto H, Wu CH, Fukaya D, Uni R, Hirakawa Y, Katagiri M, Yamada S, Ko T, Nomura S, Wada Y, Komuro I, Nangaku M, Inagi R, Inoue T. Alpha 7 nicotinic acetylcholine receptors signaling boosts cell-cell interactions in macrophages effecting anti-inflammatory and organ protection. Commun Biol 2023; 6:666. [PMID: 37353597 PMCID: PMC10290099 DOI: 10.1038/s42003-023-05051-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 06/16/2023] [Indexed: 06/25/2023] Open
Abstract
Activation of the cholinergic anti-inflammatory pathway (CAP) via vagus nerve stimulation has been shown to improve acute kidney injury in rodent models. While alpha 7 nicotinic acetylcholine receptor (α7nAChR) positive macrophages are thought to play a crucial role in this pathway, their in vivo significance has not been fully understood. In this study, we used macrophage-specific α7nAChR-deficient mice to confirm the direct activation of α7nAChRs in macrophages. Our findings indicate that the administration of GTS-21, an α7nAChR-specific agonist, protects injured kidneys in wild-type mice but not in macrophage-specific α7nAChR-deficient mice. To investigate the signal changes or cell reconstructions induced by α7nAChR activation in splenocytes, we conducted single-cell RNA-sequencing of the spleen. Ligand-receptor analysis revealed an increase in macrophage-macrophage interactions. Using macrophage-derived cell lines, we demonstrated that GTS-21 increases cell contact, and that the contact between macrophages receiving α7nAChR signals leads to a reduction in TNF-α. Our results suggest that α7nAChR signaling increases macrophage-macrophage interactions in the spleen and has a protective effect on the kidneys.
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Affiliation(s)
- Yasuna Nakamura
- Department of Physiology of Visceral Function and Body Fluid, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hirotaka Matsumoto
- School of Information and Data Sciences, Nagasaki University, Nagasaki, Japan
| | - Chia-Hsien Wu
- Department of Physiology of Visceral Function and Body Fluid, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Daichi Fukaya
- Department of Nephrology, Saitama Medical University, Saitama, Japan
| | - Rie Uni
- Division of CKD pathophysiology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Yosuke Hirakawa
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Mikako Katagiri
- Department of Cardiovascular Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| | - Shintaro Yamada
- Department of Cardiovascular Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Toshiyuki Ko
- Department of Cardiovascular Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Seitaro Nomura
- Department of Cardiovascular Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Youichiro Wada
- Isotope Science Center, The University of Tokyo, Tokyo, Japan
| | - Issei Komuro
- Department of Cardiovascular Medicine the University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Reiko Inagi
- Division of CKD pathophysiology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Tsuyoshi Inoue
- Department of Physiology of Visceral Function and Body Fluid, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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Pavlov VA, Tracey KJ. Bioelectronic medicine: Preclinical insights and clinical advances. Neuron 2022; 110:3627-3644. [PMID: 36174571 PMCID: PMC10155266 DOI: 10.1016/j.neuron.2022.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 07/28/2022] [Accepted: 09/02/2022] [Indexed: 11/17/2022]
Abstract
The nervous system maintains homeostasis and health. Homeostatic disruptions underlying the pathobiology of many diseases can be controlled by bioelectronic devices targeting CNS and peripheral neural circuits. New insights into the regulatory functions of the nervous system and technological developments in bioelectronics drive progress in the emerging field of bioelectronic medicine. Here, we provide an overview of key aspects of preclinical research, translation, and clinical advances in bioelectronic medicine.
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Affiliation(s)
- Valentin A Pavlov
- Institute of Bioelectronic Medicine, the Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA; Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
| | - Kevin J Tracey
- Institute of Bioelectronic Medicine, the Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA; Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
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Ge L, Liu S, Li S, Yang J, Hu G, Xu C, Song W. Psychological stress in inflammatory bowel disease: Psychoneuroimmunological insights into bidirectional gut–brain communications. Front Immunol 2022; 13:1016578. [PMID: 36275694 PMCID: PMC9583867 DOI: 10.3389/fimmu.2022.1016578] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Inflammatory bowel disease (IBD), mainly including ulcerative colitis (UC) and Crohn’s disease (CD), is an autoimmune gastrointestinal disease characterized by chronic inflammation and frequent recurrence. Accumulating evidence has confirmed that chronic psychological stress is considered to trigger IBD deterioration and relapse. Moreover, studies have demonstrated that patients with IBD have a higher risk of developing symptoms of anxiety and depression than healthy individuals. However, the underlying mechanism of the link between psychological stress and IBD remains poorly understood. This review used a psychoneuroimmunology perspective to assess possible neuro-visceral integration, immune modulation, and crucial intestinal microbiome changes in IBD. Furthermore, the bidirectionality of the brain–gut axis was emphasized in the context, indicating that IBD pathophysiology increases the inflammatory response in the central nervous system and further contributes to anxiety- and depression-like behavioral comorbidities. This information will help accurately characterize the link between psychological stress and IBD disease activity. Additionally, the clinical application of functional brain imaging, microbiota-targeted treatment, psychotherapy and antidepressants should be considered during the treatment and diagnosis of IBD with behavioral comorbidities. This review elucidates the significance of more high-quality research combined with large clinical sample sizes and multiple diagnostic methods and psychotherapy, which may help to achieve personalized therapeutic strategies for IBD patients based on stress relief.
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Affiliation(s)
- Li Ge
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Shuman Liu
- School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Sha Li
- School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Jing Yang
- Department of Gastroenterology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Guangran Hu
- School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Changqing Xu
- Department of Gastroenterology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Wengang Song
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- *Correspondence: Wengang Song,
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Ye Z, Zhu Y, Tang N, Zhao X, Jiang J, Ma J, Zhang H. α7 nicotinic acetylcholine receptor agonist GTS-21 attenuates DSS-induced intestinal colitis by improving intestinal mucosal barrier function. Mol Med 2022; 28:59. [PMID: 35659178 PMCID: PMC9164421 DOI: 10.1186/s10020-022-00485-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 05/05/2022] [Indexed: 12/02/2022] Open
Abstract
Background and aims Cholinergic output, which could modulate innate immune responses through stimulation of α7 nicotinic acetylcholine receptor (α7nAChR), might be a target to minimize tissue damage in autoimmune disease. GTS-21, a selective α7nAChR agonist, has previously demonstrated to inhibit synovium inflammation in rheumatoid arthritis. In this study, we investigated the effect of GTS-21 on dextran sulfate sodium (DSS)-induced colitis model and its potential mechanism. Methods Male BABL/c mice (n = 32) were randomly divided into four groups: normal control group, DSS-induced colitis group, GTS-21 treatment with or without α7nAChR antagonist α-BGT treatment group. Disease activity index (DAI), histological activity index (HAI) and colonic macroscopic damage were evaluated. Fluorescein isothiocyanate (FITC)–dextran assay was applied to measure intestinal permeability. The expressions of tight junction (TJ) proteins and NF-κB associated proteins were detected by Western blot. Results GTS-21 could decrease DAI scores, HAI scores, intestinal permeability and reduce the intestinal bacterial translocation in DSS-induced colitis group, whereas α7nAChR antagonist α-BGT could impair this protective influence. The expressions of TJ proteins were increased with administration of GTS-21 both in vivo and in vitro. Furthermore, GTS-21 also inhibited the NF-қB activation in intestinal epithelial cells and colitis model, while α-BGT reversed the inhibitory effect. Conclusion The α7nAChR agonist GTS-21 attenuated DSS-induced colitis through increasing expressions of TJ proteins in colon tissues and improved intestinal barrier function, which might be due to modulating NF-қB activation in intestinal epithelial cells. Supplementary Information The online version contains supplementary material available at 10.1186/s10020-022-00485-6.
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Affiliation(s)
- Ziping Ye
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Yunjuan Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Department of Gastroenterology, Ganyu District People's Hospital of Lianyungang City, Lianyungang, Jiangsu Province, People's Republic of China
| | - Nana Tang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Xiaojing Zhao
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Jingyue Jiang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Jingjing Ma
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Hongjie Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China.
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Zhao X, Cui D, Yuan W, Chen C, Liu Q. Berberine represses Wnt/β-catenin pathway activation via modulating the microRNA-103a-3p/Bromodomain-containing protein 4 axis, thereby refraining pyroptosis and reducing the intestinal mucosal barrier defect induced via colitis. Bioengineered 2022; 13:7392-7409. [PMID: 35259053 PMCID: PMC8973728 DOI: 10.1080/21655979.2022.2047405] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Intestinal barrier dysfunction is inflammatory bowel disease’s hallmark. Berberine (BBR) has manifested its anti-inflammatory properties in colitis. For exploring the molecular mechanism of BBR’s impacts on colitis, application of a dextran sodium sulfate-induced mouse colitis in vivo model was with recording the body weight, stool consistency, stool occult blood and general physical symptoms of all groups of mice every day. Behind assessment of intestinal permeability, detection of colon damage’s degree and apoptosis, and inflammatory factors for assessment of pyroptosis was conducted. Application of interleukin-6-stimulated Caco-2 cells was for construction of an in vitro model. Then detection of cell advancement with inflammation and measurement of the barrier’s integrity were put into effect. Verification of microRNA (miR)-103a-3p and Bromodomain-containing protein 4 (BRD4)’s targeting link was conducted. Experiments have clarified BBR, elevated miR-103a-3p or repressive BRD4 was available to alleviate colitis-stimulated pyroptosis and intestinal mucosal barrier defects. BBR elevated miR-103a-3p to target BRD4; Refraining miR-103a-3p or enhancive BRD4 turned around BBR’s therapeutic action on colitis injury. BBR depressed Wnt/β-catenin pathway activation via controlling the miR-103a-3p/BRD4 axis. All in all, BBR represses Wnt/β-catenin pathway activation via modulating the miR-103a-3p/BRD4 axis, thereby mitigating colitis-stimulated pyroptosis and the intestinal mucosal barrier defect. The research suggests BBR is supposed to take on potential in colitis cure.
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Affiliation(s)
- Xun Zhao
- The Graduate School, Guizhou Medical University, Guiyang City, Guizhou Province, China
| | - DeJun Cui
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Guiyang City, Guizhou Province, China
| | - WenQiang Yuan
- The Graduate School, Guizhou Medical University, Guiyang City, Guizhou Province, China
| | - Chen Chen
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Guiyang City, Guizhou Province, China
| | - Qi Liu
- The Graduate School, Guizhou Medical University, Guiyang City, Guizhou Province, China
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Caravaca AS, Levine YA, Drake A, Eberhardson M, Olofsson PS. Vagus Nerve Stimulation Reduces Indomethacin-Induced Small Bowel Inflammation. Front Neurosci 2022; 15:730407. [PMID: 35095387 PMCID: PMC8789651 DOI: 10.3389/fnins.2021.730407] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
Crohn's disease is a chronic, idiopathic condition characterized by intestinal inflammation and debilitating gastrointestinal symptomatology. Previous studies of inflammatory bowel disease (IBD), primarily in colitis, have shown reduced inflammation after electrical or pharmacological activation of the vagus nerve, but the scope and kinetics of this effect are incompletely understood. To investigate this, we studied the effect of electrical vagus nerve stimulation (VNS) in a rat model of indomethacin-induced small intestinal inflammation. 1 min of VNS significantly reduced small bowel total inflammatory lesion area [(mean ± SEM) sham: 124 ± 14 mm2, VNS: 62 ± 14 mm2, p = 0.002], intestinal peroxidation and chlorination rates, and intestinal and systemic pro-inflammatory cytokine levels as compared with sham-treated animals after 24 h following indomethacin administration. It was not known whether this observed reduction of inflammation after VNS in intestinal inflammation was mediated by direct innervation of the gut or if the signals are relayed through the spleen. To investigate this, we studied the VNS effect on the small bowel lesions of splenectomized rats and splenic nerve stimulation (SNS) in intact rats. We observed that VNS reduced small bowel inflammation also in splenectomized rats but SNS alone failed to significantly reduce small bowel lesion area. Interestingly, VNS significantly reduced small bowel lesion area for 48 h when indomethacin administration was delayed. Thus, 1 min of electrical activation of the vagus nerve reduced indomethacin-induced intestinal lesion area by a spleen-independent mechanism. The surprisingly long-lasting and spleen-independent effect of VNS on the intestinal response to indomethacin challenge has important implications on our understanding of neural control of intestinal inflammation and its potential translation to improved therapies for IBD.
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Affiliation(s)
- April S. Caravaca
- Laboratory of Immunobiology, Department of Medicine, Karolinska University Hospital, Solna, Sweden
- MedTechLabs, BioClinicum, Stockholm Center for Bioelectronic Medicine, Karolinska University Hospital, Solna, Sweden
- SetPoint Medical, Inc., Valencia, CA, United States
| | - Yaakov A. Levine
- Laboratory of Immunobiology, Department of Medicine, Karolinska University Hospital, Solna, Sweden
- MedTechLabs, BioClinicum, Stockholm Center for Bioelectronic Medicine, Karolinska University Hospital, Solna, Sweden
- SetPoint Medical, Inc., Valencia, CA, United States
- Institute of Bioelectronic Medicine, The Feinstein Institutes for Medical Research, New York, NY, United States
| | - Anna Drake
- SetPoint Medical, Inc., Valencia, CA, United States
| | - Michael Eberhardson
- Laboratory of Immunobiology, Department of Medicine, Karolinska University Hospital, Solna, Sweden
- MedTechLabs, BioClinicum, Stockholm Center for Bioelectronic Medicine, Karolinska University Hospital, Solna, Sweden
- Department of Gastroenterology and Hepatology, University Hospital of Linköping, Linköping, Sweden
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Peder S. Olofsson
- Laboratory of Immunobiology, Department of Medicine, Karolinska University Hospital, Solna, Sweden
- MedTechLabs, BioClinicum, Stockholm Center for Bioelectronic Medicine, Karolinska University Hospital, Solna, Sweden
- Institute of Bioelectronic Medicine, The Feinstein Institutes for Medical Research, New York, NY, United States
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