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Dilixiati S, Yan J, Qingzhuoga D, Song G, Tu L. Exploring Electrical Neuromodulation as an Alternative Therapeutic Approach in Inflammatory Bowel Diseases. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:729. [PMID: 38792911 PMCID: PMC11123282 DOI: 10.3390/medicina60050729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024]
Abstract
Background and Objectives: This review systematically evaluates the potential of electrical neuromodulation techniques-vagus nerve stimulation (VNS), sacral nerve stimulation (SNS), and tibial nerve stimulation (TNS)-as alternative treatments for inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's Disease (CD). It aims to synthesize current evidence on the efficacy and safety of these modalities, addressing the significant burden of IBD on patient quality of life and the limitations of existing pharmacological therapies. Materials and Methods: We conducted a comprehensive analysis of studies from PubMed, focusing on research published between 1978 and 2024. The review included animal models and clinical trials investigating the mechanisms, effectiveness, and safety of VNS, SNS, and TNS in IBD management. Special attention was given to the modulation of inflammatory responses and its impact on gastrointestinal motility and functional gastrointestinal disorders associated with IBD. Results: Preliminary findings suggest that VNS, SNS, and TNS can significantly reduce inflammatory markers and improve symptoms in IBD patients. These techniques also show potential in treating related gastrointestinal disorders during IBD remission phases. However, the specific mechanisms underlying these benefits remain to be fully elucidated, and there is considerable variability in treatment parameters. Conclusions: Electrical neuromodulation holds promise as a novel therapeutic avenue for IBD, offering an alternative to patients who do not respond to traditional treatments or experience adverse effects. The review highlights the need for further rigorous studies to optimize stimulation parameters, understand long-term outcomes, and integrate neuromodulation effectively into IBD treatment protocols.
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Affiliation(s)
- Suofeiya Dilixiati
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (S.D.); (D.Q.)
| | - Jiaxi Yan
- Division of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH 44109, USA;
| | - De Qingzhuoga
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (S.D.); (D.Q.)
| | - Gengqing Song
- Division of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH 44109, USA;
| | - Lei Tu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (S.D.); (D.Q.)
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Chen Z, Li J, Ma Q, Pikov V, Li M, Wang L, Liu Y, Ni M. Anti-Inflammatory Effects of Two-Week Sacral Nerve Stimulation Therapy in Patients With Ulcerative Colitis. Neuromodulation 2024; 27:360-371. [PMID: 37055336 DOI: 10.1016/j.neurom.2023.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 12/24/2022] [Accepted: 01/03/2023] [Indexed: 04/15/2023]
Abstract
BACKGROUND AND AIMS Sacral nerve stimulation (SNS) showed anti-inflammatory properties in animal models of inflammatory bowel disease. We aimed to evaluate the effectiveness and safety of SNS in patients with ulcerative colitis (UC). MATERIALS AND METHODS Twenty-six patients with mild and moderate disease were randomized into two groups: SNS (delivered at S3 and S4 sacral foramina) and sham-SNS (delivered 8-10 mm away from sacral foramina), with the therapy applied once daily for one hour, for two weeks. We evaluated the Mayo score and several exploratory biomarkers, including C-reactive protein in the plasma, pro-inflammatory cytokines and norepinephrine in the serum, assessment of autonomic activity, and diversity and abundance of fecal microbiota species. RESULTS After two weeks, 73% of the subjects in the SNS group achieved clinical response, compared with 27% in the sham-SNS group. Levels of C-reactive protein, pro-inflammatory cytokines in the serum, and autonomic activity were significantly improved toward a healthy profile in the SNS group but not in the sham-SNS group. Absolute abundance of fecal microbiota species and one of the metabolic pathways were changed in the SNS group but not in the sham-SNS group. Significant correlations were observed between pro-inflammatory cytokines and norepinephrine in the serum on the one side and fecal microbiota phyla on the other side. CONCLUSIONS Patients with mild and moderate UC were responsive to a two-week SNS therapy. After performing further studies to evaluate its efficacy and safety, temporary SNS delivered through acupuncture needles may become a useful screening tool for identifying SNS therapy responders before considering long-term implantation of the implantable pulse generator and SNS leads for performing long-term SNS therapy.
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Affiliation(s)
- Zhengxin Chen
- National Center for Colorectal Diseases, Nanjing Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Jing Li
- Department of Acupuncture and Moxibustion, Nanjing Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Qiyao Ma
- Graduate School, Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China; Anorectal Surgery of Zhongda Hospital Southeast University, Nanjing, Jiangsu Province, China
| | | | - Min Li
- National Center for Colorectal Diseases, Nanjing Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Ling Wang
- Graduate School, Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Ying Liu
- National Center for Colorectal Diseases, Nanjing Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Min Ni
- National Center for Colorectal Diseases, Nanjing Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu Province, China.
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D’Haens G, Eberhardson M, Cabrijan Z, Danese S, van den Berg R, Löwenberg M, Fiorino G, Schuurman PR, Lind G, Almqvist P, Olofsson PS, Tracey KJ, Hanauer SB, Zitnik R, Chernoff D, Levine YA. Neuroimmune Modulation Through Vagus Nerve Stimulation Reduces Inflammatory Activity in Crohn's Disease Patients: A Prospective Open-label Study. J Crohns Colitis 2023; 17:1897-1909. [PMID: 37738465 PMCID: PMC10798868 DOI: 10.1093/ecco-jcc/jjad151] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Indexed: 09/24/2023]
Abstract
BACKGROUND AND AIMS Crohn's disease [CD] is a debilitating, inflammatory condition affecting the gastrointestinal tract. There is no cure and sustained clinical and endoscopic remission is achieved by fewer than half of patients with current therapies. The immunoregulatory function of the vagus nerve, the 'inflammatory reflex', has been established in patients with rheumatoid arthritis and biologic-naive CD. The aim of this study was to explore the safety and efficacy of vagus nerve stimulation in patients with treatment-refractory CD, in a 16-week, open-label, multicentre, clinical trial. METHODS A vagus nerve stimulator was implanted in 17 biologic drug-refractory patients with moderately to severely active CD. One patient exited the study pre-treatment, and 16 patients were treated with vagus nerve stimulation [4/16 receiving concomitant biologics] during 16 weeks of induction and 24 months of maintenance treatment. Endpoints included clinical improvement, patient-reported outcomes, objective measures of inflammation [endoscopic/molecular], and safety. RESULTS There was a statistically significant and clinically meaningful decrease in CD Activity Index at Week 16 [mean ± SD: -86.2 ± 92.8, p = 0.003], a significant decrease in faecal calprotectin [-2923 ± 4104, p = 0.015], a decrease in mucosal inflammation in 11/15 patients with paired endoscopies [-2.1 ± 1.7, p = 0.23], and a decrease in serum tumour necrosis factor and interferon-γ [46-52%]. Two quality-of-life indices improved in 7/11 patients treated without biologics. There was one study-related severe adverse event: a postoperative infection requiring device explantation. CONCLUSIONS Neuroimmune modulation via vagus nerve stimulation was generally safe and well tolerated, with a clinically meaningful reduction in clinical disease activity associated with endoscopic improvement, reduced levels of faecal calprotectin and serum cytokines, and improved quality of life.
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Affiliation(s)
- Geert D’Haens
- Department of Gastroenterology and Hepatology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Michael Eberhardson
- Department of Medicine, Karolinska Institutet, Solna, Sweden
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Zeljko Cabrijan
- Division of Gastroenterology, Hepatology and Clinical Nutrition, University Hospital Dubrava, Zagreb, Croatia
- Division of Gastroenterology, University of Applied Health Sciences, Zagreb, Croatia
- Josip Juraj Strossmayer University of Osijek School of Medicine, Osijek, Croatia
| | - Silvio Danese
- Department of Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele, Italy
- Department of Gastroenterology and Endoscopy, University Vita-Salute San Raffaele, Milano, Italy
| | - Remco van den Berg
- Department of Gastroenterology and Hepatology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Mark Löwenberg
- Department of Gastroenterology and Hepatology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Gionata Fiorino
- Department of Gastroenterology and Digestive Endoscopy, VIta-Salute San Raffaele Hospital, Milan, Italy
- IBD Unit, Department of Gastroenterology and Digestive Endoscopy, San Camillo-Forlanini Hospital, Rome, Italy
| | | | - Göran Lind
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Per Almqvist
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
- Neurosurgery Stockholm AB, Stockholm, Sweden
| | - Peder S Olofsson
- Department of Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Feinstein Institutes for Medical Research, Manhasset, New York
| | - Kevin J Tracey
- Feinstein Institutes for Medical Research, Manhasset, New York
- Department of Neurosurgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
- Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
| | - Stephen B Hanauer
- Division of Gastroenterology and Hepatology, Northwestern University–Feinberg School of Medicine, Chicago, Illinois, USA
| | - Ralph Zitnik
- SetPoint Medical, Valencia, California, USA
- Valerio Consulting, Santa Barbara, California, USA
| | | | - Yaakov A Levine
- Department of Medicine, Karolinska Institutet, Solna, Sweden
- Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
- SetPoint Medical, Valencia, California, USA
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Adam J, Rupprecht S, Künstler ECS, Hoyer D. Heart rate variability as a marker and predictor of inflammation, nosocomial infection, and sepsis - A systematic review. Auton Neurosci 2023; 249:103116. [PMID: 37651781 DOI: 10.1016/j.autneu.2023.103116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/11/2023] [Accepted: 08/11/2023] [Indexed: 09/02/2023]
Abstract
PURPOSE The autonomic nervous system interacts with the immune system via the inflammatory response. Heart rate variability (HRV), a marker of autonomic activity, is associated with inflammation, and nosocomial infections/sepsis, and has clinical implications for the monitoring of at-risk patients. Due to the vagal tone's influence on anti-inflammatory immune response, this association may predominately be reflected by vagally-mediated HRV indices. However, HRV's predictive significance on inflammation/infection remains unclear. METHODS 843 studies examining the associations/prognostic value of HRV indices on inflammation, and nosocomial infection/sepsis were screened in this systematic review. According to inclusion and exclusion criteria, 68 associative studies and 14 prediction studies were included. RESULTS HRV and pro-inflammatory state were consistently associated in healthy subjects and patient groups. Pro-inflammatory state was related to reduced total power HRV including vagally- and non-vagally-mediated HRV indices. Similar, compared to controls, HRV reductions were observed during nosocomial infections/sepsis. Only limited evidence supports the predictive value of HRV in the development of nosocomial infections/sepsis. Reduced very low frequency power HRV showed the highest predictive value in adults, even with different clinical conditions. In neonates, an increased heart rate characteristic score, combining reduced total power HRV, decreased complexity, and vagally-dominated asymmetry, predicted sepsis. CONCLUSIONS Pro-inflammatory state is related to an overall reduction in HRV rather than a singular reduction in vagally-mediated HRV indices, reflecting the complex autonomic-regulatory changes occurring during inflammation. The potential benefit of using continuous HRV monitoring for detecting nosocomial infection-related states, and the implications for clinical outcome, need further clarification.
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Affiliation(s)
- Josephine Adam
- Department of Neurology, Jena University Hospital, Jena, Germany.
| | - Sven Rupprecht
- Department of Neurology, Jena University Hospital, Jena, Germany; Interdisciplinary Centre for Sleep and Ventilatory Medicine, Jena University Hospital, Jena, Germany
| | - Erika C S Künstler
- Department of Neurology, Jena University Hospital, Jena, Germany; Interdisciplinary Centre for Sleep and Ventilatory Medicine, Jena University Hospital, Jena, Germany
| | - Dirk Hoyer
- Department of Neurology, Jena University Hospital, Jena, Germany
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Sauk JS, Ryu HJ, Labus JS, Khandadash A, Ahdoot AI, Lagishetty V, Katzka W, Wang H, Naliboff B, Jacobs JP, Mayer EA. High Perceived Stress is Associated With Increased Risk of Ulcerative Colitis Clinical Flares. Clin Gastroenterol Hepatol 2023; 21:741-749.e3. [PMID: 35952942 DOI: 10.1016/j.cgh.2022.07.025] [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: 02/25/2022] [Revised: 07/14/2022] [Accepted: 07/18/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Although perceived stress (PS) has been associated with symptomatic flares in inflammatory bowel disease, clinical and physiological measures associated with perceived stress and flare are not known. The aim of this study was to identify physiological factors associated with perceived stress in ulcerative colitis (UC) subjects, and their relationship with flare. METHODS Patients with UC in clinical remission (Simple Colitis Clinical Activity Index [SCCAI] score <5) underwent clinical and behavioral assessments, morning salivary cortisol measurements, autonomic nervous system activity testing (heart rate variability, electrodermal activity) at baseline with patient-reported SCCAI every 2 weeks over 1 to 2 years and fecal calprotectin at time of flare. Clinical flares (SCCAI ≥5) and biochemical flares (SCCAI ≥5 with fecal calprotectin ≥250 μg/g) were evaluated. RESULTS One hundred ten patients with UC were enrolled, with mean follow-up of 65.6 weeks. Patients with UC with higher and lower PS were determined. Although the high PS group had 3.6 times higher odds of a clinical flare than the low PS group, no significant differences in biochemical flares were observed between the low and high PS groups. The high vs low PS group differed in tonic sympathetic arousal as indexed by significantly greater baseline electrodermal activity (4.3 vs 3.4 microsiemens; P = .026) in the high PS group, but not in terms of heart rate variability and morning cortisol levels. Increased fecal calprotectin was associated with cardioautonomic measures, suggesting lower parasympathetic activity. CONCLUSIONS Increased PS assessed at baseline is associated with tonic sympathetic arousal and greater odds of clinical flares in patients with UC.
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Affiliation(s)
- Jenny S Sauk
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Hyo Jin Ryu
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Jennifer S Labus
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Ariela Khandadash
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Aaron I Ahdoot
- Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Venu Lagishetty
- Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - William Katzka
- Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Hao Wang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Bruce Naliboff
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Jonathan P Jacobs
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California; Division of Gastroenterology, Hepatology and Parenteral Nutrition, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California
| | - Emeran A Mayer
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California.
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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: 19] [Impact Index Per Article: 9.5] [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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Yasmin F, Sahito AM, Mir SL, Khatri G, Shaikh S, Gul A, Hassan SA, Koritala T, Surani S. Electrical neuromodulation therapy for inflammatory bowel disease. World J Gastrointest Pathophysiol 2022; 13:128-142. [PMID: 36187600 PMCID: PMC9516456 DOI: 10.4291/wjgp.v13.i5.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 02/19/2022] [Accepted: 07/18/2022] [Indexed: 02/08/2023] Open
Abstract
Inflammatory bowel disease (IBD) is an inflammatory disease of the gastrointestinal (GI) tract. It has financial and quality of life impact on patients. Although there has been a significant advancement in treatments, a considerable number of patients do not respond to it or have severe side effects. Therapeutic approaches such as electrical neuromodulation are being investigated to provide alternate options. Although bioelectric neuromodulation technology has evolved significantly in the last decade, sacral nerve stimulation (SNS) for fecal incontinence remains the only neuromodulation protocol commonly utilized use for GI disease. For IBD treatment, several electrical neuromodulation techniques have been studied, such as vagus NS, SNS, and tibial NS. Several animal and clinical experiments were conducted to study the effectiveness, with encouraging results. The precise underlying mechanisms of action for electrical neuromodulation are unclear, but this modality appears to be promising. Randomized control trials are required to investigate the efficacy of intrinsic processes. In this review, we will discuss the electrical modulation therapy for the IBD and the data pertaining to it.
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Affiliation(s)
- Farah Yasmin
- Department of Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Abdul Moiz Sahito
- Department of Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Syeda Lamiya Mir
- Department of Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Govinda Khatri
- Department of Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Somina Shaikh
- Department of Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Ambresha Gul
- Department of Medicine, People’s University of Medical and Health Sciences, Nawabshah 67480, Pakistan
| | - Syed Adeel Hassan
- Department of Medicine, University of Louisville, Louiseville, KY 40292, United States
| | - Thoyaja Koritala
- Department of Medicine, Mayo Clinic, Rochester, NY 55902, United States
| | - Salim Surani
- Department of Medicine, Texas A&M University, College Station, TX 77843, United States
- Department of Anesthesiology, Mayo Clinic, Rochester, MN 55902, United States
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Yerushalmy-Feler A, Cohen S, Lubetzky R, Moran-Lev H, Ricon-Becker I, Ben-Eliyahu S, Gidron Y. Heart rate variability as a predictor of disease exacerbation in pediatric inflammatory bowel disease. J Psychosom Res 2022; 158:110911. [PMID: 35489164 DOI: 10.1016/j.jpsychores.2022.110911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/04/2022] [Accepted: 04/05/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Heart rate variability (HRV), a marker of the parasympathetic vagal activity, was reportedly significantly lower in patients with inflammatory bowel disease (IBD) compared to healthy controls. The aim of this study was to evaluate HRV as a predictor of clinical outcomes in pediatric IBD. METHODS This was a prospective study. Children (12-18 years of age) with IBD were prospectively recruited. Each patient underwent two 10-min HRV measurements by means of a photoplethysmograph finger sensor. The square root of the mean squared differences of successive R-R pulse intervals (RMSSD), an indirect index of vagal activity, was calculated. Clinical data, including demographic variables, disease activity and course, medications, and laboratory results were collected during a follow-up of 12 months. The relation between RMSSD and clinical outcomes was examined, adjusting for confounders. RESULTS A total of 34 children with IBD were included. Patients in clinical remission had a significantly higher RMSSD compared to patients with active disease (67.72 ± 27.81 versus 45.76 ± 22.04, respectively, P = 0.022). A multivariate analysis revealed that a higher RMSSD was a significant and independent predictor of lower risk of IBD exacerbation (odds ratio = 0.941, 95% confidence interval 0.887-0.998, p = 0.044). CONCLUSION HRV correlates with IBD activity and may also serve as an independent predictor of disease exacerbation in pediatric IBD.
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Affiliation(s)
- Anat Yerushalmy-Feler
- Pediatric Gastroenterology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Shlomi Cohen
- Pediatric Gastroenterology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Ronit Lubetzky
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Pediatrics, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
| | - Hadar Moran-Lev
- Pediatric Gastroenterology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Itay Ricon-Becker
- Psychoneuroimmunology Laboratory, School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Shamgar Ben-Eliyahu
- Psychoneuroimmunology Laboratory, School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel.
| | - Yori Gidron
- Dept. of Nursing, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel.
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WANG BB, CUI C, LIAO SY, BU XL, SHA WH. Analysis of short-term heart rate variability in patients with Crohn’s disease. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.31621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Bei-bei WANG
- Southern Medical University, China; Guangdong Academy of Medical Sciences, China
| | - Can CUI
- Guangdong Academy of Medical Sciences, China
| | | | | | - Wei-hong SHA
- Southern Medical University, China; Guangdong Academy of Medical Sciences, China
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10
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Liu J, Liu S, Gao L, Li G, Xu J, Sun Y, Wang J, Shi B. Predicting Post-operative Blood Inflammatory Biomarkers Using Pre-operative Heart Rate Variability in Patients With Cervical Cancer. Front Physiol 2021; 12:696208. [PMID: 34803724 PMCID: PMC8599823 DOI: 10.3389/fphys.2021.696208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 10/15/2021] [Indexed: 12/24/2022] Open
Abstract
Blood inflammatory biomarkers, including the neutrophil-to-lymphocyte ratio (NLR), the lymphocyte-to-monocyte ratio (LMR), and the platelet-to-lymphocyte ratio (PLR), play a significant role in determining the prognosis of patients with cervical cancer (CC). Currently, no methods are available to predict these indexes pre-operatively. Cardiac autonomic function is determined based on the heart rate variability (HRV), which is also associated with a progressive inflammatory response and cancer. Thus, the main aim of this study was to evaluate the feasibility of using pre-operative HRV parameters in CC patients to predict post-operative blood inflammation biomarkers as a means of determining prognosis. Between 2020 and 2021, 56 patients who were diagnosed with CC and then underwent hysterectomy surgery at the Department of Gynecologic Oncology, First Affiliated Hospital, Bengbu Medical College were enrolled in this study. Five-minute electrocardiogram data were collected 1 day before the operation for analysis of HRV parameters, including frequency domain parameters (LF, HF, and LF/HF) and Poincaré plot parameters (SD1, SD2, and SD2/SD1). Venous blood was collected 2 days post-operatively and inflammatory biomarkers were evaluated, with the NLR, LMR, and PLR determined. Pre-operative SD2 was significantly associated with post-operative PLR, with each 1-unit increase in SD2 decreasing the PLR value by 2.4 ± 0.9 (P < 0.05). Besides, LF/HF was significantly correlated with NLR, with each 1-unit increase in LF/HF increasing the NLR value by 1.1 ± 0.5 (P < 0.05). This association was independent of patient age and body mass index. These results suggest that the pre-operative autonomic nervous system plays a role in the regulation of post-operative cancer inflammation and that pre-operative HRV parameters can potentially predict post-operative inflammation and facilitate clinical treatment decisions.
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Affiliation(s)
- Jian Liu
- Department of Gynecologic Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Shiqi Liu
- School of Medical Imaging, Bengbu Medical College, Bengbu, China.,Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Longfei Gao
- Department of Gynecologic Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Guangqiao Li
- School of Medical Imaging, Bengbu Medical College, Bengbu, China.,Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Jie Xu
- Department of Gynecologic Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Yilin Sun
- Department of Gynecologic Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Jingfeng Wang
- School of Medical Imaging, Bengbu Medical College, Bengbu, China.,Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Bo Shi
- School of Medical Imaging, Bengbu Medical College, Bengbu, China.,Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
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11
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Tavakoli P, Vollmer-Conna U, Hadzi-Pavlovic D, Grimm MC. A Review of Inflammatory Bowel Disease: A Model of Microbial, Immune and Neuropsychological Integration. Public Health Rev 2021; 42:1603990. [PMID: 34692176 PMCID: PMC8386758 DOI: 10.3389/phrs.2021.1603990] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/01/2021] [Indexed: 12/11/2022] Open
Abstract
Objective: Inflammatory bowel diseases (IBDs) are complex chronic inflammatory disorders of the gastro-intestinal (GI) tract with uncertain etiology. IBDs comprise two idiopathic disorders: Crohn’s disease (CD) and ulcerative colitis (UC). The aetiology, severity and progression of such disorders are still poorly understood but thought to be influenced by multiple factors (including genetic, environmental, immunological, physiological, psychological factors and gut microbiome) and their interactions. The overarching aim of this review is to evaluate the extent and nature of the interrelationship between these factors with the disease course. A broader conceptual and longitudinal framework of possible neuro-visceral integration, core microbiome analysis and immune modulation assessment may be useful in accurately documenting and characterizing the nature and temporal continuity of crosstalk between these factors and the role of their interaction (s) in IBD disease activity. Characterization of these interactions holds the promise of identifying novel diagnostic, interventions, and therapeutic strategies. Material and Methods: A search of published literature was conducted by exploring PubMed, EMBASE, MEDLINE, Medline Plus, CDSR library databases. Following search terms relating to key question were set for the search included: “Inflammatory bowel diseases,” “gut microbiota,” “psychological distress and IBD,” “autonomic reactivity and IBD,” “immune modulation,” “chronic inflammation,” “gut inflammation,” “enteric nervous system,” “gut nervous system,” “Crohn’s disease,” “Ulcerative colitis”, “depression and IBD”, “anxiety and IBD”, “quality of life in IBD patients,” “relapse in IBDs,” “remission in IBDs,” “IBD disease activity,” “brain-gut-axis,” “microbial signature in IBD,” “validated questionnaires in IBD,” “IBD activity indices,” “IBD aetiology,” “IBDs and stress,” “epidemiology of IBDs”, “autonomic nervous system and gut inflammation”, “IBD and environment,” “genetics of IBDs,” “pathways of immune response in IBDs,” “sleep disturbances in IBD,” “hypothalamic-pituitary-adrenal axis (HPA),” “sympatho-adrenal axis,” “CNS and its control of gut function” “mucosal immune response,” “commensal and pathogenic bacteria in the gut,” “innate and adaptive immunity.” Studies evaluating any possible associations between gut microbiome, psychological state, immune modulation, and autonomic function with IBDs were identified. Commonly cited published literatures with high quality research methodology/results and additional articles from bibliographies of recovered papers were examined and included where relevant. Results: Although there is a substantial literature identifying major contributing factors with IBD, there has been little attempt to integrate some factors over time and assess their interplay and relationship with IBD disease activity. Such contributing factors include genetic and environmental factors, gut microbiota composition and function, physiological factors, psychological state and gut immune response. Interdependences are evident across psychological and biological factors and IBD disease activity. Although from the available evidence, it is implausible that a single explanatory model could elucidate the interplay between such factors and the disease course as well as the sequence of the effect during the pathophysiology of IBD. Conclusion: Longitudinal monitoring of IBD patients and integrating data related to the contributing/risk factors including psychological state, physiological conditions, inflammatory/immune modulations, and microbiome composition/function, could help to explain how major factors associate and interrelate leading to exacerbation of symptoms and disease activity. Identifying the temporal trajectory of biological and psychosocial disturbances may also help to assess their effects and interdependence on individuals’ disease status. Moreover, this allows greater insight into understanding the temporal progressions of subclinical events as potential ground for disease severity in IBD. Furthermore, understanding the interaction between these risk factors may help better interventions in controlling the disease, reducing the costs related to disease management, further implications for clinical practice and research approaches in addition to improving patients’ mental health and quality of life.
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Affiliation(s)
- P Tavakoli
- St George and Sutherland Clinical School, Sydney, NSW, Australia
| | - U Vollmer-Conna
- School of Psychiatry, University of New South Wales, Sydney, Australia
| | - D Hadzi-Pavlovic
- School of Psychiatry, University of New South Wales, Sydney, Australia
| | - M C Grimm
- St George and Sutherland Clinical School, Sydney, NSW, Australia
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12
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Hirten RP, Danieletto M, Scheel R, Shervey M, Ji J, Hu L, Sauk J, Chang L, Arnrich B, Bӧttinger E, Dudley J, Keefer L, Sands BE. Longitudinal Autonomic Nervous System Measures Correlate With Stress and Ulcerative Colitis Disease Activity and Predict Flare. Inflamm Bowel Dis 2021; 27:1576-1584. [PMID: 33382065 DOI: 10.1093/ibd/izaa323] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Differences in autonomic nervous system function, measured by heart rate variability (HRV), have been observed between patients with inflammatory bowel disease and healthy control patients and have been associated in cross-sectional studies with systemic inflammation. High HRV has been associated with low stress. METHODS Patients with ulcerative colitis (UC) were followed for 9 months. Their HRV was measured every 4 weeks using the VitalPatch, and blood was collected at baseline and every 12 weeks assessing cortisol, adrenocorticotropin hormone, interleukin-1β, interleukin-6, tumor necrosis factor-α, and C-reactive protein (CRP). Stool was collected at enrollment and every 6 weeks for fecal calprotectin. Surveys assessing symptoms, stress, resilience, quality of life, anxiety, and depression were longitudinally collected. RESULTS Longitudinally evaluated perceived stress was significantly associated with systemic inflammation (CRP, P = 0.03) and UC symptoms (P = 0.02). There was a significant association between HRV and stress (low-frequency to high-frequency power [LFHF], P = 0.04; root mean square of successive differences [RMSSD], P = 0.04). The HRV was associated with UC symptoms (LFHF, P = 0.03), CRP (high frequency, P < 0.001; low frequency, P < 0.001; RMSSD, P < 0.001), and fecal calprotectin (high frequency, P < 0.001; low frequency, P < 0.001; RMSSD, P < 0.001; LFHF, P < 0.001). Significant changes in HRV indices from baseline developed before the identification of a symptomatic or inflammatory flare (P < 0.001). CONCLUSIONS Longitudinally evaluated HRV was associated with UC symptoms, inflammation, and perceived and physiological measures of stress. Significant changes in HRV were observed before the development of symptomatic or inflammatory flare.
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Affiliation(s)
- Robert P Hirten
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Matteo Danieletto
- Hasso Plattner Institute for Digital Health at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Robert Scheel
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Mark Shervey
- Hasso Plattner Institute for Digital Health at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jiayi Ji
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Liangyuan Hu
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jenny Sauk
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Lin Chang
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Bert Arnrich
- Hasso Plattner Institute for Digital Health at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Erwin Bӧttinger
- Hasso Plattner Institute for Digital Health at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Joel Dudley
- Hasso Plattner Institute for Digital Health at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Laurie Keefer
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Bruce E Sands
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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13
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Eberhardson M, Levine YA, Tarnawski L, Olofsson PS. The brain-gut axis, inflammatory bowel disease and bioelectronic medicine. Int Immunol 2021; 33:349-356. [PMID: 33912906 DOI: 10.1093/intimm/dxab018] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/26/2021] [Indexed: 12/21/2022] Open
Abstract
The hallmark of inflammatory bowel diseases (IBD) is chronic intestinal inflammation with typical onset in adolescents and young adults. An abundance of neutrophils is seen in the inflammatory lesions, but adaptive immunity is also an important player in the chronicity of the disease. There is an unmet need for new treatment options since modern medicines such as biological therapy with anti-cytokine antibodies still leave a substantial number of patients with persisting disease activity. The role of the central nervous system and its interaction with the gut in the pathophysiology of IBD have been brought to attention both in animal models and in humans after the discovery of the inflammatory reflex. The suggested control of gut immunity by the brain-gut axis represents a novel therapeutic target suitable for bioelectronic intervention. In this review, we discuss the role of the inflammatory reflex in gut inflammation and the recent advances in the treatment of IBD by intervening with the brain-gut axis through bioelectronic devices.
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Affiliation(s)
- Michael Eberhardson
- Department of Gastroenterology and Hepatology, University Hospital of Linköping, 581 91 Linköping, Sweden.,Department of Medicine, Center for Bioelectronic Medicine, Bioclinicum, Karolinska Institutet, 171 64 Stockholm, Sweden.,Department of Health, Medicine and Caring Sciences, Linköping University, 581 83 Linköping, Sweden
| | - Yaakov A Levine
- Department of Medicine, Center for Bioelectronic Medicine, Bioclinicum, Karolinska Institutet, 171 64 Stockholm, Sweden.,SetPoint Medical, Valencia, CA 91355, USA
| | - Laura Tarnawski
- Department of Medicine, Center for Bioelectronic Medicine, Bioclinicum, Karolinska Institutet, 171 64 Stockholm, Sweden
| | - Peder S Olofsson
- Department of Medicine, Center for Bioelectronic Medicine, Bioclinicum, Karolinska Institutet, 171 64 Stockholm, Sweden.,Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
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14
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Bonaz B, Sinniger V, Pellissier S. Therapeutic Potential of Vagus Nerve Stimulation for Inflammatory Bowel Diseases. Front Neurosci 2021; 15:650971. [PMID: 33828455 PMCID: PMC8019822 DOI: 10.3389/fnins.2021.650971] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
The vagus nerve is a mixed nerve, comprising 80% afferent fibers and 20% efferent fibers. It allows a bidirectional communication between the central nervous system and the digestive tract. It has a dual anti-inflammatory properties via activation of the hypothalamic pituitary adrenal axis, by its afferents, but also through a vago-vagal inflammatory reflex involving an afferent (vagal) and an efferent (vagal) arm, called the cholinergic anti-inflammatory pathway. Indeed, the release of acetylcholine at the end of its efferent fibers is able to inhibit the release of tumor necrosis factor (TNF) alpha by macrophages via an interneuron of the enteric nervous system synapsing between the efferent vagal endings and the macrophages and releasing acetylcholine. The vagus nerve also synapses with the splenic sympathetic nerve to inhibit the release of TNF-alpha by splenic macrophages. It can also activate the spinal sympathetic system after central integration of its afferents. This anti-TNF-alpha effect of the vagus nerve can be used in the treatment of chronic inflammatory bowel diseases, represented by Crohn’s disease and ulcerative colitis where this cytokine plays a key role. Bioelectronic medicine, via vagus nerve stimulation, may have an interest in this non-drug therapeutic approach as an alternative to conventional anti-TNF-alpha drugs, which are not devoid of side effects feared by patients.
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Affiliation(s)
- Bruno Bonaz
- Division of Hepato-Gastroenterology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France.,Grenoble Institute of Neurosciences, Inserm U1216, University Grenoble Alpes, Grenoble, France
| | - Valérie Sinniger
- Division of Hepato-Gastroenterology, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France.,Grenoble Institute of Neurosciences, Inserm U1216, University Grenoble Alpes, Grenoble, France
| | - Sonia Pellissier
- Laboratoire Inter-Universitaire de Psychologie Personnalité, Cognition, Changement Social, University Grenoble Alpes, University Savoie Mont Blanc, Grenoble, France
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15
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Pasricha TS, Zhang H, Zhang N, Chen JDZ. Sacral nerve stimulation prompts vagally-mediated amelioration of rodent colitis. Physiol Rep 2020; 8:e14294. [PMID: 31925899 PMCID: PMC6954119 DOI: 10.14814/phy2.14294] [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: 10/21/2019] [Accepted: 10/28/2019] [Indexed: 12/19/2022] Open
Abstract
Neuromodulation based on the vagal anti‐inflammatory reflex has emerged as an exciting therapeutic approach for chronic inflammatory diseases. However, it is unclear whether direct stimulation of the vagus or of pelvic nerves coming from sacral roots, providing the bulk of colonic parasympathetic innervation, is the best approach. We hypothesized that sacral nerve stimulation (SNS) would be an effective treatment for colitis. Age and sex‐matched Sprague‐Dawley rats were administered 5% dextran sulphate sodium (DSS) in drinking water ad libitum for 7 days. A group of rats was sacrificed after DSS treatment, and the remaining rats were randomized to either sham‐SNS or SNS groups, which were performed for 1 hr daily for 10 days. Stimulations were delivered via chronically implanted electrodes using an 8‐channel universal pulse generator. Sacral nerve stimulation promoted recovery of colitis demonstrated by decreased disease activity index, myeloperoxidase activity, tissue TNF‐alpha, and histological scores as well as an increased colonic M2 macrophage population. Heart rate variability analysis demonstrated a decrease in low frequency and increase in high frequency with SNS, corresponding to increased vagal tone. Additionally, plasma pancreatic peptide was increased and norepinephrine was decreased after SNS in colitis while colon tissue acetylcholine was increased with SNS. This is the first study to the best of our knowledge that demonstrates the benefit of SNS with autonomic mediation. SNS alters the expression of inflammatory cytokines and macrophages as well as modulates neurotransmitters involved in systemic inflammation.
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Affiliation(s)
| | - Han Zhang
- Division of Gastroenterology and Hepatology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Nina Zhang
- Division of Gastroenterology and Hepatology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jiande D Z Chen
- Division of Gastroenterology and Hepatology, Johns Hopkins School of Medicine, Baltimore, MD, USA
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16
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Alterations in Heart Rate Variability Associated With Irritable Bowel Syndrome or Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis. Clin Transl Gastroenterol 2020; 12:e00275. [PMID: 33346998 PMCID: PMC7752679 DOI: 10.14309/ctg.0000000000000275] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION: Irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD) are gastrointestinal pathologies affecting large numbers of the global population and incurring significant healthcare costs. Disruptions in the gut-brain axis occurring in these conditions can lead to increased inflammation, affecting gastrointestinal and autonomic nervous system function. Heart rate variability (HRV) is commonly used to assess the state of the sympathetic and parasympathetic function of the autonomic nervous system, but it remains unclear how HRV measures are associated with gastrointestinal pathologies. Here, we conduct a systematic review of the literature comparing HRV of subjects diagnosed with IBS or IBD to HRV in healthy controls (HC). METHODS: We searched PubMed, Cochrane Library, and CINAHL (EBSCO) for eligible studies up to 2018. We included any study comparing a recognized measure of HRV between a group of patients with either IBS or IBD to a group of matched HC before any intervention. Studies were screened, and data were extracted from included articles using predefined criteria. Random effects meta-analysis was performed for each outcome, with effect size reported as the standardized mean difference. RESULTS: There were significant differences between IBD and HC in time domain HRV and significant decreases in high-frequency power measures were also noted, in both IBS and IBD compared with HC. DISCUSSION: Parasympathetic nervous system activity, represented through high-frequency power, seems to be lower in people with IBS and IBD, but conclusions are limited by the small number of studies that provide usable data, methodological heterogeneity, and high risks of bias in primary study methods and measures.
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17
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Kim KN, Yao Y, Ju SY. Heart rate variability and inflammatory bowel disease in humans: A systematic review and meta-analysis. Medicine (Baltimore) 2020; 99:e23430. [PMID: 33235125 PMCID: PMC7710256 DOI: 10.1097/md.0000000000023430] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The autonomic nervous system (ANS) maintains homeostasis in the gastrointestinal tract, including immunity, inflammation and motility, through the brain-gut axis. To date, the associations between ANS function and inflammatory bowel disease (IBD) have been controversial and inconclusive in human studies. PubMed, Cochrane Library, and Embase were searched through February 2020 for articles reporting these association between heart rate variability (HRV), an indirect measure of ANS activity, and IBD. The standardized mean differences and 95% confidence intervals (CIs) were calculated. Ten eligible studies involving 273 ulcerative colitis patients, 167 Crohn's disease patients and 208 healthy controls were included. The values of the total power (SMD = -0.83, 95% CI = -1.44, -0.21), high frequency (SMD = -0.79, 95% CI = -1.20, -0.38), RR interval (SMD = -0.66, 95% CI = -1.04, -0.27), standard deviation of the RR intervals (SMD = -1.00, 95% CI = -1.73, -0.27), percentage of RR intervals with a greater than 50-millisecond variation (SMD = -0.82, 95% CI = -1.33, -0.30) and the square root of the mean squared differences in successive RR intervals (SMD = -0.71, 95% CI = -1.15, -0.26) of the IBD patients were lower than those of the healthy controls, and moderate to large effect sizes were observed in all HRV indices, except for low frequency (SMD = -0.41, 95% CI = 0.95, 0.13). IBD was strongly associated with an overall decrease in HRV, indicating substantially decreased ANS activity. Furthermore, the parasympathetic nerve displayed a stronger inverse association with ANS activity than the sympathetic nerve, indicating ANS dysfunction in patients with IBD.
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Affiliation(s)
- Kyu-Nam Kim
- Department of Family Practice and Community Health, Ajou University School of Medicine, Suwon, Gyeonggi-do, Republic of Korea
| | - Yao Yao
- Center for Healthy Aging and Development Studies and Raissun Institute for Advanced Studies, National School of Development, Peking University, Beijing, China
- Center for the Study of Aging and Human Development, Medical School of Duke University, Durham, North Carolina, USA
| | - Sang-Yhun Ju
- Department of Family Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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18
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Cheng J, Shen H, Chowdhury R, Abdi T, Selaru F, Chen JDZ. Potential of Electrical Neuromodulation for Inflammatory Bowel Disease. Inflamm Bowel Dis 2020; 26:1119-1130. [PMID: 31782957 DOI: 10.1093/ibd/izz289] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Indexed: 12/12/2022]
Abstract
Inflammatory bowel disease (IBD) is a common chronic inflammatory disease of the digestive tract that is often debilitating. It affects patients' quality of life and imposes a financial burden. Despite advances in treatment with medications such as biologics, a large proportion of patients do not respond to medical therapy or develop adverse events. Therefore, alternative treatment options such as electrical neuromodulation are currently being investigated. Electrical neuromodulation, also called bioelectronic medicine, is emerging as a potential new treatment for IBD. Over the past decade, advancements have been made in electrical neuromodulation. A number of electrical neuromodulation methods, such as vagus nerve stimulation, sacral nerve stimulation, and tibial nerve stimulation, have been tested to treat IBD. A series of animal and clinical trials have been performed to evaluate efficacy with promising results. Although the exact underlying mechanisms of action for electrical neuromodulation remain to be explored, this modality is promising. Further randomized controlled trials and basic experiments are needed to investigate efficacy and clarify intrinsic mechanisms.
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Affiliation(s)
- Jiafei Cheng
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Division of Gastroenterology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Hong Shen
- Division of Gastroenterology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Reezwana Chowdhury
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tsion Abdi
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Florin Selaru
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jiande D Z Chen
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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19
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Liu B, Wanders A, Wirdefeldt K, Sjölander A, Sachs MC, Eberhardson M, Ye W, Ekbom A, Olén O, Ludvigsson JF. Vagotomy and subsequent risk of inflammatory bowel disease: a nationwide register-based matched cohort study. Aliment Pharmacol Ther 2020; 51:1022-1030. [PMID: 32319125 DOI: 10.1111/apt.15715] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/07/2019] [Accepted: 03/18/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND The vagus nerve provides essential parasympathetic innervation to the gastrointestinal system and is known to have anti-inflammatory properties. AIMS To explore the relationship between vagotomy and the risk of inflammatory bowel disease (IBD) and its major categories: Crohn's disease (CD) and ulcerative colitis (UC). METHODS A matched cohort comprising 15 637 patients undergoing vagotomy was identified through the Swedish Patient Register from 1964 to 2010. Each vagotomised patient was matched for birth year and gender with 40 nonvagotomised individuals on the date of vagotomy. We estimated hazard ratios (HRs) and 95% confidence intervals (CIs) for IBD using flexible parametric models adjusted for matching variables, year of vagotomy, birth country, chronic obstructive pulmonary disease and comorbidity index. RESULTS We observed 119 (0.8%) patients with vagotomy developed IBD compared to 3377 (0.5%) IBD cases in nonvagotomised individuals. The crude incidence of IBD (per 1000 person-years) was 0.38 for vagotomised patients and 0.25 for nonvagotomised individuals. We observed a time-dependent elevated risk of IBD associated with vagotomy, for instance, the HR (95% CI) was 1.80 (1.40-2.31) at year 5 and 1.49 (1.14-1.96) at year 10 post-vagotomy. The association appeared to be stronger for truncal than selective vagotomy and limited to CD (HR was 3.63 [1.94-6.80] for truncal and 2.06 [1.49-2.84] for selective vagotomy) but not UC (1.36 [0.71-2.62] for truncal and 1.25 [0.95-1.63] for selective vagotomy). CONCLUSIONS We found a positive association between vagotomy and later IBD, particularly for CD. The finding indirectly underlines the beneficial role of the vagal tone in IBD.
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Affiliation(s)
- Bojing Liu
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Alkwin Wanders
- Department of Medical Biosciences, Umeå University, Umeå, Sweden
| | - Karin Wirdefeldt
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Arvid Sjölander
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Michael C Sachs
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | - Weimin Ye
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Anders Ekbom
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ola Olén
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Stockholm South General Hospital, Stockholm, Sweden
| | - Jonas F Ludvigsson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Pediatrics, Orebro University Hospital, Orebro, Sweden
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The Efficacy of Flupentixol-Melitracen in the Adjuvant Therapy of Ulcerative Colitis in the Chinese Population: A Meta-Analysis. Gastroenterol Res Pract 2019; 2019:3480732. [PMID: 30944561 PMCID: PMC6421776 DOI: 10.1155/2019/3480732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 12/02/2018] [Accepted: 12/20/2018] [Indexed: 11/18/2022] Open
Abstract
Objectives Our aim of this study is to compare the efficacy of flupentixol-melitracen in the adjuvant therapy of ulcerative colitis patients in the Chinese population. Methods Both the RevMan 5.2 and the Stata 12.0 software are used in this study for analysis, and a fixed-effect model (the Mantel-Haenszel method) or a random-effect model (the DerSimonian and Laird method) is used to merge or aggregate the risk ratio (RR) and its 95% confidence intervals (CI) of included studies. Results Eleven trials involving 654 ulcerative colitis patients (treated group: 328; control group: 326) were analyzed in this study. Significant differences (RR = 1.29, 95% CI = 1.20 to 1.40, P < 0.001) between patients were observed between the two groups. Conclusions Our results suggested that the efficacy of flupentixol-melitracen in the adjuvant therapy of ulcerative colitis is better than traditional drug treatments.
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Altered Salivary Alpha-Amylase Secretion in Patients with Ulcerative Colitis. Gastroenterol Res Pract 2018; 2018:4203737. [PMID: 29977288 PMCID: PMC5994290 DOI: 10.1155/2018/4203737] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/14/2018] [Accepted: 04/23/2018] [Indexed: 02/07/2023] Open
Abstract
Purpose Patients with ulcerative colitis (UC) frequently present with psychological disturbances as well as dysfunctions of autonomic nervous system (ANS). Salivary alpha-amylase (sAA) secretion is predominantly controlled by sympathetic nervous activity, while salivary fluid secretion is by parasympathetic nervous activity. Thus, it is speculated that alterations of salivary secretion may be addressed in UC populations. Methods Thirty-five UC patients as well as 32 age- and sex-matched healthy controls were enrolled. Saliva samples before and after citric acid stimulation were collected from each participant, and salivary flow rate (SFR) was calculated accordingly. Western blotting and quantitative PCR were applied to measure the sAA level and sAA gene (AMY1) copy number, respectively. The psychological disorders, anxiety and depression, were evaluated by the scoring system of Hospital Anxiety and Depression Scale (HADS) for each participant. Results We observed robustly increased prevalence of anxiety (p < 0.001) as well as depression (p < 0.001) in UC patients relative to controls. Interestingly, we detected elevated basal (p = 0.015) and stimulated (p = 0.021) sAA levels in the UC populations compared to controls. However, no differences were found for basal (p = 0.643) or stimulated (p = 0.402) SFR between the two study groups. Besides, AMY1 gene copy number was comparable between UC patients and controls. Conclusions Our results reveal an overactivity of the sympathetic nervous system and a normal activity of the parasympathetic nervous system in the UC population.
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Autonomic regulation of systemic inflammation in humans: A multi-center, blinded observational cohort study. Brain Behav Immun 2018; 67:47-53. [PMID: 28807718 DOI: 10.1016/j.bbi.2017.08.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 07/12/2017] [Accepted: 08/09/2017] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE Experimental animal models demonstrate that autonomic activity regulates systemic inflammation. By contrast, human studies are limited in number and exclusively use heart rate variability (HRV) as an index of cardiac autonomic regulation. HRV measures are primarily dependent on, and need to be corrected for, heart rate. Thus, independent autonomic measures are required to confirm HRV-based findings. Here, the authors sought to replicate the findings of preceding HRV-based studies by using HRV-independent, exercise-evoked sympathetic and parasympathetic measures of cardiac autonomic regulation to examine the relationship between autonomic function and systemic inflammation. METHODS Sympathetic function was assessed by measuring heart rate changes during unloaded pedaling prior to onset of exercise, divided into quartiles; an anticipatory heart rate (AHRR) rise during this period is evoked by mental stress in many individuals. Parasympathetic function was assessed by heart rate recovery (HRR) 60s after finishing cardiopulmonary exercise testing, divided into quartiles. Parasympathetic dysfunction was defined by delayed heart rate recovery (HRR) ≤12.beats.min-1, a threshold value associated with higher cardiovascular morbidity/mortality in the general population. Systemic inflammation was primarily assessed by neutrophil-lymphocyte ratio (NLR), where a ratio >4 is prognostic across several inflammatory diseases and correlates strongly with elevated plasma levels of pro-inflammatory cytokines. High-sensitivity C-reactive protein (hsCRP) was also measured. RESULTS In 1624 subjects (65±14y; 67.9% male), lower HRR (impaired vagal activity) was associated with progressively higher NLR (p=0.004 for trend across quartiles). Delayed HRR, recorded in 646/1624 (39.6%) subjects, was associated with neutrophil-lymphocyte ratio >4 (relative risk: 1.43 (95%CI: 1.18-1.74); P=0.0003). Similar results were found for hsCRP (p=0.045). By contrast, AHRR was not associated with NLR (relative risk: 1.24 (95%CI: 0.94-1.65); P=0.14). CONCLUSIONS Delayed HRR, a robust measure of parasympathetic dysfunction, is independently associated with leukocyte ratios indicative of systemic inflammation. These results further support a role for parasympathetic modulation of systemic inflammation in humans.
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