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Lee AH, Mahurkar-Joshi S, Naliboff B, Gupta A, Labus J, Tillisch K, Mayer E, Chang L. Role of Sex, Anxiety, and Resilience in the Association Between Adverse Childhood Experiences and Irritable Bowel Syndrome. Clin Gastroenterol Hepatol 2025; 23:154-162.e2. [PMID: 38878847 PMCID: PMC11648812 DOI: 10.1016/j.cgh.2024.05.041] [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: 03/12/2024] [Revised: 05/14/2024] [Accepted: 05/28/2024] [Indexed: 07/10/2024]
Abstract
BACKGROUND & AIMS Adverse childhood experiences (ACE) are associated with increased risk of irritable bowel syndrome (IBS), a female-predominant chronic abdominal disorder. Factors contributing to this association have not been well-studied. We compared sex differences in ACE for adults with and without IBS and evaluated the impact of anxiety and resilience on the relationship between ACE and IBS. METHODS Sex and disease differences in total score and ACE subtypes from the ACE Questionnaire in subjects with IBS and control subjects were assessed. Cross-sectional mediation analysis determined if anxiety (Hospital Anxiety and Depression Scale) and resilience (Connor-Davidson Resilience Scale or Brief Resilience Scale) mediated the relationship between ACE and IBS. RESULTS Of 798 participants studied, 368 met IBS diagnostic criteria (265 women, 103 men) and 430 were healthy control subjects (277 women, 153 men). Prevalence and number of ACE were higher in IBS versus control subjects (P < .001) but similar between IBS women and men. Household mental illness increased odds of having IBS in women (odds ratio [OR], 1.95; 95% confidence interval [CI], 1.35-2.85; false discovery rate [FDR], 0.002) and men (OR, 2.32; 95% CI, 1.26-4.33; FDR, 0.014). Emotional abuse increased odds of having IBS in women (OR, 1.94; 95% CI, 1.23-3.09; FDR, 0.019) and sexual abuse increased odds of IBS in men (OR, 3.54; 95% CI, 1.35-10.38; FDR, 0.027). Anxiety mediated 54% (P < .001) of ACE's effect on IBS risk and resilience mediated 12%-14% (Connor-Davidson Resilience Scale, P = .008; Brief Resilience Scale, P = .018). CONCLUSIONS Both men and women with a history of ACE are twice as likely to have IBS than those without an ACE. Anxiety mediated the relationship between ACE and IBS in men and women and resilience mediated this relationship only in women.
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Affiliation(s)
- Anna H Lee
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Swapna Mahurkar-Joshi
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Bruce Naliboff
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Arpana Gupta
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Jennifer Labus
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Kirsten Tillisch
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Emeran Mayer
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche & Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California.
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Slouha E, Mohamed A, Patel B, Razeq Z, Clunes LA, Kollias TF. The Use of Psychotherapy for Refractory Irritable Bowel Syndrome: A Systematic Review. Cureus 2024; 16:e54138. [PMID: 38487115 PMCID: PMC10938188 DOI: 10.7759/cureus.54138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2024] [Indexed: 03/17/2024] Open
Abstract
Irritable bowel syndrome (IBS) is a common yet debilitating and chronic condition that consists of disturbances in bowel habits and abdominal pain that is frequently relieved with defecation. While the first line of treatment for IBS is pharmacological treatment, this has been shown to fail, leading to the patient being classified as having refractory IBS. The quality of life (QOL) of these patients is greatly hindered; in this case, there are rarely moments of relief. Additional modalities of treatment have been employed in classical cases of IBS, such as psychotherapy, and research has started to evaluate its effectiveness with refractory IBS. Both cognitive behavioral therapy (CBT) and gut-directed hypnotherapy (GDH) are effective in treating classical IBS as they restructure and bring a state of meditation to the patient, allowing them to work through the symptoms. The question is whether it remains successful in refractory cases. This systematic review was conducted with strict adherence to PRISMA guidelines with an initial inquiry resulting in 28,978 publications through PubMed, ScienceDirect, and ProQuest databases. Through automatic and manual screening processes, articles that were peer-reviewed experimental or observation publications done between 2003 and 2023 were included in this study, resulting in 21 publications. Across all studies evaluating CBT, it was consistently found to be successful in improving symptom severity and frequency, QOL, and extracolonic symptoms such as anxiety and depression. When broken down into delivery methods, minimal contact CBT was found to be just as, if not superior, to standard contact. Within this, telephone-delivered CBT was superior to web-delivered CBT. GDH and biofeedback therapy were found to also significantly improve all domains of IBS with no difference between them. Acceptance and commitment therapy were found only to improve associated symptoms. However, there was no significant improvement in their QOL, whereas integrative group therapy found no significant improvement in any domain. Because IBS is so common and crippling to those affected, its crucial to continuously improve QOL through advancement in treatment modalities. Further research should focus more on other modes of therapy as success has been shown in standard therapeutic techniques.
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Affiliation(s)
- Ethan Slouha
- Anatomical Sciences, St. George's University School of Medicine, St. George's, GRD
| | - Ahmed Mohamed
- Pharmacology, St. George's University School of Medicine, St. George's, GRD
| | - Bansari Patel
- Pharmacology, St. George's University School of Medicine, St. George's, GRD
| | - Ziyad Razeq
- Medicine, St. George's University School of Medicine, St. George's, GRD
| | - Lucy A Clunes
- Pharmacology, St. George's University School of Medicine, St. George's, GRD
| | - Theofanis F Kollias
- Microbiology, Immunology and Pharmacology, St. George's University School of Medicine, St. George's, GRD
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Staudacher HM, Black CJ, Teasdale SB, Mikocka-Walus A, Keefer L. Irritable bowel syndrome and mental health comorbidity - approach to multidisciplinary management. Nat Rev Gastroenterol Hepatol 2023; 20:582-596. [PMID: 37268741 PMCID: PMC10237074 DOI: 10.1038/s41575-023-00794-z] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/02/2023] [Indexed: 06/04/2023]
Abstract
Irritable bowel syndrome (IBS) affects 5-10% of the global population. Up to one-third of people with IBS also experience anxiety or depression. Gastrointestinal and psychological symptoms both drive health-care use in people with IBS, but psychological comorbidity seems to be more important for long-term quality of life. An integrated care approach that addresses gastrointestinal symptoms with nutrition and brain-gut behaviour therapies is considered the gold standard. However, best practice for the treatment of individuals with IBS who have a comorbid psychological condition is unclear. Given the rising prevalence of mental health disorders, discussion of the challenges of implementing therapy for people with IBS and anxiety and depression is critical. In this Review, we draw upon our expertise in gastroenterology, nutrition science and psychology to highlight common challenges that arise when managing patients with IBS and co-occurring anxiety and depression, and provide recommendations for tailoring clinical assessment and treatment. We provide best practice recommendations, including dietary and behavioural interventions that could be applied by non-specialists and clinicians working outside an integrated care model.
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Affiliation(s)
- Heidi M Staudacher
- Food & Mood Centre, IMPACT Institute, Deakin University Geelong, Melbourne, Victoria, Australia.
| | - Christopher J Black
- Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
- Leeds Gastroenterology Institute, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Scott B Teasdale
- Psychiatry and Mental Health, University of New South Wales, Sydney, New South Wales, Australia
| | | | - Laurie Keefer
- Department of Medicine and Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Fadgyas Stanculete M, Ismaiel A, Popa SL, Capatina OO. Irritable Bowel Syndrome and Resilience. J Clin Med 2023; 12:4220. [PMID: 37445254 DOI: 10.3390/jcm12134220] [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: 05/16/2023] [Revised: 06/11/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Irritable bowel syndrome (IBS) is a disorder of the gut-brain interaction (DGBI), characterized, mainly in severe cases, by altered psychological stress reactivity, psychological disorders, and dysfunction of the brain-gut-microbiota axis. Prior studies have highlighted significant physical and emotional impairments in the health-related quality of life of patients with IBS. Resilience is a psychosocial ability that reduces negative emotions while enhancing adaptation to adversities. Resilience is essential for health promotion and stress response. The present study aimed to carry out a review of the literature in multiple databases, using the descriptors "resilience", "resiliency", and "irritable bowel syndrome". The inclusion criteria for obtaining the most relevant papers were research articles on resilience and irritable bowel syndrome written in English, published in a peer-reviewed journal, and involving human subjects. Studies specifically on resilience in IBS were sparse. These results need to be understood in light of these limitations. As resilience appears to be modifiable, it is essential to conduct direct research on resilience-enhancing interventions for people with IBS. The study of the factors involved in successful adaptation must be extended, to possibly yield new interventions that help the patients overcome the difficulties imposed by the disease.
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Affiliation(s)
- Mihaela Fadgyas Stanculete
- Department of Neurosciences, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
| | - Abdulrahman Ismaiel
- 2nd Department of Internal Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
| | - Stefan-Lucian Popa
- 2nd Department of Internal Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
| | - Octavia Oana Capatina
- Department of Neurosciences, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
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Holzer P. Gut Signals and Gut Feelings: Science at the Interface of Data and Beliefs. Front Behav Neurosci 2022; 16:929332. [PMID: 35874652 PMCID: PMC9296981 DOI: 10.3389/fnbeh.2022.929332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022] Open
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Keefer L, Ballou SK, Drossman DA, Ringstrom G, Elsenbruch S, Ljótsson B. A Rome Working Team Report on Brain-Gut Behavior Therapies for Disorders of Gut-Brain Interaction. Gastroenterology 2022; 162:300-315. [PMID: 34529986 DOI: 10.1053/j.gastro.2021.09.015] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/04/2021] [Accepted: 09/10/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS This Rome Foundation Working Team Report reflects the consensus of an international interdisciplinary team of experts regarding the use of behavioral interventions, specifically brain-gut behavior therapies (BGBTs), in patients with disorders of gut-brain interaction (DGBIs). METHODS The committee members reviewed the extant scientific literature and, when possible, addressed gaps in this literature through the lens of their clinical and scientific expertise. The Delphi method was used to create consensus on the goals, structure, and framework before writing the report. The report is broken into 5 parts: 1) definition and evidence for BGBT, 2) the gut-brain axis as the mechanistic basis for BGBT, 3) targets of BGBTs, 4) common and unique therapeutic techniques seen in BGBT, and 5) who and how to refer for BGBT. RESULTS We chose to not only review for the reader the 5 existing classes of BGBT and their evidence, but to connect DGBI-specific behavioral targets and techniques as they relate directly, or in some cases indirectly, to the gut-brain axis. In doing so, we expect to increase gastrointestinal providers' confidence in identifying and referring appropriate candidates for BGBT and to support clinical decision making for mental health professionals providing BGBT. CONCLUSIONS Both gastrointestinal medical providers and behavioral health providers have an opportunity to optimize care for DGBIs through a collaborative integrated approach that begins with an effective patient-provider relationship, thoughtful communication about the brain-gut axis and, when appropriate, a well communicated referral to BGBT.
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Affiliation(s)
- Laurie Keefer
- Icahn School of Medicine at Mount Sinai, New York, New York.
| | - Sarah K Ballou
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Douglas A Drossman
- Center for Education and Practice of Biopsychosocial Care and Drossman Gastroenterology, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Gisela Ringstrom
- Department of Internal Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sigrid Elsenbruch
- Department of Medical Psychology and Medical Sociology, Faculty of Medicine, Ruhr University Bochum, Bochum, Germany; Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Brjánn Ljótsson
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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Parker CH, Naliboff BD, Shih W, Presson AP, Kilpatrick L, Gupta A, Liu C, Keefer LA, Sauk JS, Hirten R, Sands BE, Chang L. The Role of Resilience in Irritable Bowel Syndrome, Other Chronic Gastrointestinal Conditions, and the General Population. Clin Gastroenterol Hepatol 2021; 19:2541-2550.e1. [PMID: 32835842 PMCID: PMC7897330 DOI: 10.1016/j.cgh.2020.08.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/07/2020] [Accepted: 08/17/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Resilience is the ability to adapt positively to stress and adversity. It is a potential therapeutic target as it is reduced in irritable bowel syndrome (IBS) compared to healthy controls and associated with worse symptom severity and poorer quality of life. The aim of this study was to examine if these findings are generalizable by comparing resilience between IBS versus the general population and other chronic gastrointestinal (GI) conditions. METHODS Participants in the general population completed an online survey containing questionnaires measuring demographics, diagnosis of IBS and other GI conditions, symptom severity, psychological symptoms, resilience, and early adverse life events (EALs). IBS was defined as having a physician diagnosis of IBS and/or meeting Rome criteria without co-morbid GI disease. All others were included in the general population group. The chronic GI conditions group included those with inflammatory bowel disease, celiac disease and/or microscopic colitis. RESULTS Resilience was lower in IBS (n = 820) than the general population (n = 1026; p < 0.001) and associated with worse IBS symptom severity (p < 0.05). Global mental health affected resilience differently in IBS compared to the general population (all p's < 0.05). EALs were associated with decreased ability to bounce back from adversity in both IBS and the general population (p < 0.001). Resilience scores were similar in IBS and other chronic GI conditions that present with similar symptoms. CONCLUSIONS Resilience is lower compared to the general U.S. population but does not appear to be specific to IBS as it is comparable to other chronic GI conditions. Low resilience negatively affects symptom severity and mental health and thus, may serve as a novel therapeutic target.
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Affiliation(s)
- Colleen H Parker
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California; Division of Gastroenterology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Bruce D Naliboff
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Wendy Shih
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Angela P Presson
- Division of Epidemiology, Department of Internal Medicine, University of Utah, Salt Lake City Utah
| | - Lisa Kilpatrick
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Arpana Gupta
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Cathy Liu
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Laurie A Keefer
- Dr. Henry D. Janowitz Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Jenny S Sauk
- UCLA Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Robert Hirten
- Dr. Henry D. Janowitz Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Bruce E Sands
- Dr. Henry D. Janowitz Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Disease, David Geffen School of Medicine at UCLA, Los Angeles, California.
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Wollny AI, Jacobs I. Validity and reliability of the German versions of the CD-RISC-10 and CD-RISC-2. CURRENT PSYCHOLOGY 2021; 42:3437-3448. [PMID: 33850411 PMCID: PMC8032848 DOI: 10.1007/s12144-021-01670-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 11/29/2022]
Abstract
The Connor-Davidson Resilience Scale (CD-RISC) is an established instrument to assess trait resilience. The present study investigates the psychometric properties of the brief German CD-RISC-10 and CD-RISC-2 in an online sample of 360 students. The CD-RISC-10 showed good reliability, whereas the CD-RISC-2 just missed an acceptable level of reliability. The unifactorial structure of the CD-RISC-10 was supported in a confirmatory factor analysis. Correlational analysis with various clinical and non-clinical constructs (e.g., trait resilience, trait emotional intelligence, life satisfaction, well-being, perceived stress, sleep problems, anxiety, depression, and mental and physical health related quality of life) provided evidence for convergent, divergent, and incremental validity of both brief versions of the CD-RISC. Measured with the CD-RISC-10, trait resilience buffered the effects of perceived stress on life satisfaction and aggregated mental health problems, but not on physical health related quality of life. For the CD-RISC-2, a buffer effect was only found for life satisfaction. Taken together, the results of the present study provide support for the validity of the CD-RISC-10 and, to a lesser extent, of the CD-RISC-2. Implications and limitations of the results will be discussed.
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Affiliation(s)
- Anna Irena Wollny
- University of Potsdam, Am Neuen Palais 10, Haus 22, 14469 Potsdam, Germany
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Damis LF, Hamilton MS. Impact of hypnotic safety on disorders of gut-brain interaction: A pilot study. AMERICAN JOURNAL OF CLINICAL HYPNOSIS 2020; 63:150-168. [PMID: 33118881 DOI: 10.1080/00029157.2020.1794434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Functional gastrointestinal disorders, i.e., abdominal conditions without identifiable structural etiologies, are seen frequently in primary care and specialty practices. As subtle physiological processes have been identified as potential contributing factors to these functional disorders, these disorders have been recently relabeled, Disorders of Gut-Brain Interaction (DGBI). Moreover, some of these processes, e.g., sympathetic nervous system activity and inflammation, are being increasingly related to psychosocial factors such as situational stress and histories of trauma, abuse, and neglect. As the activity of the autonomic nervous system (ANS) has been long considered to be a contributory factor for DGBI, the present study utilized a theory-driven model based on the Polyvagal Theory to optimize ANS activity for the promotion of healthy digestive activity. Specifically, a hypnotic intervention to increase neuroception of safety was employed with three female college students diagnosed with functional dyspepsia and irritable bowel syndrome in a single-subject design. This intervention was found to be associated with increases in the experience of safe/warm positive affect and decreases in symptoms of functional dyspepsia and irritable bowel syndrome as well as depression and anxiety. The hypnotic intervention for the promotion of a sense of safety is recommended for the treatment of other functional somatic disorders as well as trauma-related conditions. Potential complications related to individuals with prolonged trauma and attachment issues also are reviewed.
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Intestinal Microbiome in Irritable Bowel Syndrome before and after Gut-Directed Hypnotherapy. Int J Mol Sci 2018; 19:ijms19113619. [PMID: 30453528 PMCID: PMC6274728 DOI: 10.3390/ijms19113619] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 11/13/2018] [Indexed: 12/20/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a disorder with brain-gut-microbiome alterations. Gut-directed hypnotherapy (GHT) has been shown to improve quality of life and symptoms in IBS. This therapy targets psychological coping, central nervous processing and brain-gut interaction. Studies have also demonstrated effects of hypnosis on intestinal transit and the mucosal immune system. So far, no study has examined the effect of GHT on the intestinal microbiome. This study aimed at examining microbial composition, IBS symptoms, and psychological distress before and after GHT. Methods: Fecal samples were collected from 38 IBS patients (Rome-III criteria, mean age 44 years, 27 female, 11 male, 22 diarrhea-dominant, 12 alternating-type and 4 constipation-dominant IBS) before and after 10 weekly group sessions of GHT. Assessments in psychological (perceived stress, PSQ; psychological distress, HADS-D; quality of life, visual analogue scales) and IBS symptom-related variables (IBS severity, IBS-SSS; single symptoms, visual analogue scales) were performed with validated questionnaires. Fecal samples underwent microbial 16S rRNA analyses (regions V1–2). Results: Microbial alpha diversity was stable before and after GHT (chao1 2591 ± 548 vs. 2581 ± 539, p = 0.92). No significant differences were found in relative bacterial abundances but trends of reduced abundance of Lachnospiraceae 32.18 (4.14–39.89) Median (Q1–Q3) vs. 28.11 (22.85; 35.55) and Firmicutes: Bacteroidetes ratio after GHT were observable. Significant reductions in symptom severity (323 (266–371) vs. 264 (191–331), p = 0.001) and psychological distress 17.0 (12.6–21.8) vs. 12.0 (8.3–18.0), p = 0.001, and increased well-being were found after GHT. Adequate relief after therapy was reported by 32 (84%) patients. Conclusion: Reductions in IBS symptoms and psychological burden were observed after gut-directed hypnotherapy, but only small changes were found in intestinal microbiota composition. The findings suggest that hypnosis may act by central nervous impact and other factors largely independent from microbiota composition modulating the brain-gut axis, possibly alterations in vagus nerve functioning and microbiota metabolism.
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