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Ford AC, Staudacher HM, Talley NJ. Postprandial symptoms in disorders of gut-brain interaction and their potential as a treatment target. Gut 2024; 73:1199-1211. [PMID: 38697774 DOI: 10.1136/gutjnl-2023-331833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 04/23/2024] [Indexed: 05/05/2024]
Abstract
Postprandial, or meal-related, symptoms, such as abdominal pain, early satiation, fullness or bloating, are often reported by patients with disorders of gut-brain interaction, including functional dyspepsia (FD) or irritable bowel syndrome (IBS). We propose that postprandial symptoms arise via a distinct pathophysiological process. A physiological or psychological insult, for example, acute enteric infection, leads to loss of tolerance to a previously tolerated oral food antigen. This enables interaction of both the microbiota and the food antigen itself with the immune system, causing a localised immunological response, with activation of eosinophils and mast cells, and release of inflammatory mediators, including histamine and cytokines. These have more widespread systemic effects, including triggering nociceptive nerves and altering mood. Dietary interventions, including a diet low in fermentable oligosaccharides, disaccharides, monosaccharides and polyols, elimination of potential food antigens or gluten, IgG food sensitivity diets or salicylate restriction may benefit some patients with IBS or FD. This could be because the restriction of these foods or dietary components modulates this pathophysiological process. Similarly, drugs including proton pump inhibitors, histamine-receptor antagonists, mast cell stabilisers or even tricyclic or tetracyclic antidepressants, which have anti-histaminergic actions, all of which are potential treatments for FD and IBS, act on one or more of these mechanisms. It seems unlikely that food antigens driving intestinal immune activation are the entire explanation for postprandial symptoms in FD and IBS. In others, fermentation of intestinal carbohydrates, with gas release altering reflex responses, adverse reactions to food chemicals, central mechanisms or nocebo effects may dominate. However, if the concept that postprandial symptoms arise from food antigens driving an immune response in the gastrointestinal tract in a subset of patients is correct, it is paradigm-shifting, because if the choice of treatment were based on one or more of these therapeutic targets, patient outcomes may be improved.
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Affiliation(s)
- Alexander C Ford
- Leeds Gastroenterology Institute, St James's University Hospital, Leeds, UK
| | - Heidi M Staudacher
- Deakin University-Geelong Waterfront Campus, Geelong, Victoria, Australia
| | - Nicholas J Talley
- Health, University of Newcastle, Callaghan, New South Wales, Australia
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2
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Buckle RL, Brown LC, Aziz I. Randomized trial in postprandial functional dyspepsia: Reassurance and diagnostic explanation with or without traditional dietary advice. Neurogastroenterol Motil 2024; 36:e14733. [PMID: 38178367 DOI: 10.1111/nmo.14733] [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: 07/24/2023] [Revised: 11/17/2023] [Accepted: 12/18/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND Almost 80% of individuals with functional dyspepsia experience meal-related symptoms and are diagnosed with postprandial distress syndrome (PDS). However, studies evaluating dietary modifications in PDS are sparse. We performed a single-center randomized trial comparing reassurance and diagnostic explanation (RADE) with or without traditional dietary advice (TDA) in PDS. METHODS Following a normal upper gastrointestinal endoscopy, individuals with PDS were randomized to a leaflet providing RADE ± TDA; the latter recommending small, regular meals and reducing the intake of caffeine/alcohol/fizzy drinks and high-fat/processed/spicy foods. Questionnaires were completed over 4 weeks, including self-reported adequate relief of dyspeptic symptoms, and the validated Leuven Postprandial Distress Scale (LPDS), Gastrointestinal Symptom Rating Scale, and Nepean Dyspepsia Index for quality of life. The primary endpoint(s) to define clinical response were (i) ≥50% adequate relief of dyspeptic symptoms and (ii) >0.5-point reduction in the PDS subscale of the LPDS (calculated as the mean scores for early satiety, postprandial fullness, and upper abdominal bloating). KEY RESULTS Of the 53 patients with PDS, 27 were assigned RADE-alone and 26 to additional TDA. Baseline characteristics were similar between groups, with a mean age of 39 years, 70% female, 83% white British, and coexistent irritable bowel syndrome in 66%. The primary endpoints of (i) adequate relief of dyspeptic symptoms were met by 33% (n = 9) assigned RADE-alone versus 39% (n = 10) with TDA; p-value = 0.70, while (ii) a reduction of >0.5 points in the PDS subscale was met by 37% (n = 10) assigned RADE-alone versus 27% (n = 7) with TDA; p-value = 0.43. Response rates did not differ according to irritable bowel syndrome status. There were no significant between-group changes in the gastrointestinal symptom rating scale and dyspepsia quality of life. CONCLUSIONS & INFERENCES This study of predominantly white British patients with PDS found the addition of TDA did not lead to significantly greater symptom reduction compared with RADE alone. Alternate dietary strategies should be explored in this cohort.
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Affiliation(s)
- Rachel L Buckle
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Lydia C Brown
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
- University of Sheffield, Sheffield, UK
| | - Imran Aziz
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
- University of Sheffield, Sheffield, UK
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Hosseinian SZ, Haghighatdoost F, Hajihashemi P, Adibi P. Effects of gluten on dyspeptic symptoms: a systematic review and meta-analysis of clinical trials. Nutr Rev 2023; 82:9-33. [PMID: 37115663 DOI: 10.1093/nutrit/nuad034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
CONTEXT Research on the effects of gluten on dyspeptic symptoms has shown conflicting results. OBJECTIVE The aim of this systematic review and meta-analysis of clinical trials was to assess the effects of gluten on dyspeptic symptoms. DATA SOURCES A systematic search of the PubMed, ISI Web of Science, Scopus, Cochrane, and Embase online databases was performed up to May 2022. DATA EXTRACTION Randomized controlled trials (RCTs) and non-RCTs that examined the impact of a gluten-free diet, a low-gluten diet, or a gluten challenge on dyspeptic symptoms, including early satiety, epigastric pain, bloating, and nausea, were selected independently by 2 authors. The GRADE (Grading of Recommendations Assessment, Development, and Evaluation) framework was used to assess the certainty of the evidence. Results were pooled using a random-effects model and expressed as weighted mean differences (WMDs) and 95%CIs. DATA ANALYSIS Of the 7641 citations retrieved, 27 articles (18 RCTs and 9 non-RCTs) were included in the systematic review. Of those, 5 RCTs were eligible for the meta-analysis. The pooled results indicated that gluten challenge significantly increased the severity of bloating (WMD = 0.67; 95%CI, 0.37-0.97; I2 = 81.8%; n = 6), early satiety (WMD = 0.91; 95%CI, 0.58-1.23; I2 = 27.2%; n = 5), and epigastric pain (WMD = 0.46; 95%CI, 0.17-0.75; I2 = 65.8%; n = 6). However, the effect of gluten challenge on the severity of nausea (WMD = 0.13; 95%CI, -0.17 to 0.43; I2 = 0.0%, n = 5) was nonsignificant. CONCLUSION Gluten challenge significantly worsened dyspeptic symptoms, including bloating, early satiety, and epigastric pain, but did not affect nausea. These findings suggest that gluten restriction could be efficient in reducing dyspeptic symptoms. Well-designed large RCTs recruiting homogenous groups of patients with functional dyspepsia are needed to clarify the effectiveness of gluten restriction on dyspeptic symptoms.
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Affiliation(s)
- Seyedeh-Zeynab Hosseinian
- are with the Isfahan Gastroenterology and Hepatology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fahimeh Haghighatdoost
- is with the Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parisa Hajihashemi
- are with the Isfahan Gastroenterology and Hepatology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Peyman Adibi
- are with the Isfahan Gastroenterology and Hepatology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Cooke ZM, Resciniti SM, Wright BJ, Hale MW, Yao CK, Tuck CJ, Biesiekierski JR. Association between dietary factors, symptoms, and psychological factors in adults with dyspepsia: A cross-sectional study. Neurogastroenterol Motil 2023; 35:e14684. [PMID: 37771208 DOI: 10.1111/nmo.14684] [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: 03/20/2023] [Revised: 08/10/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023]
Abstract
BACKGROUND Evidence-based dietary management approaches for symptoms of dyspepsia are lacking. This study aimed to compare dietary factors, symptoms, quality of life (QOL) and salivary cortisol in dyspepsia participants and healthy controls. METHODS A cross-sectional survey was completed by adults with dyspepsia (n = 121) meeting Rome IV criteria and healthy controls (n = 52). Outcome measures included self-reported questionnaires about dietary habits, triggers, restrictions, dietary management approaches, nutritional intake, psychological variables, QOL, gastrointestinal symptoms, and optional cortisol awakening response (CAR) via saliva samples. Data were analyzed using Chi-square or Mann-Whitney U. Cortisol awakening response data was analyzed using moderated regression controlling for age, gender and distress. KEY RESULTS Fermentable carbohydrates (FODMAPs) (55%) were the most reported trigger in adults with dyspepsia. The dyspepsia group (88%) followed special diets more than controls (47%; p < 0.001), with a low FODMAP diet being most common (69%). The dyspepsia group consumed less fiber (p = 0.014), calcium (p = 0.015), and total FODMAPs (p < 0.001) than controls. There was a greater prevalence of comorbid anxiety (41%) and depression (31%) in dyspepsia compared to controls (15% and 12%, respectively, p < 0.001 and p = 0.006). The dyspepsia group had poorer QOL and greater gastrointestinal symptom severity than controls (p < 0.001). There was a negative association between anxiety and CAR (p = 0.001) in dyspepsia but not in controls. CONCLUSIONS & INFERENCES Adults with dyspepsia follow special diets more than controls and perceive FODMAPs as a key dietary trigger. These findings highlight the importance of monitoring nutritional adequacy and QOL, and emphasize mechanisms of depleted stress response in dyspepsia, warranting further exploration.
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Affiliation(s)
- Zoe M Cooke
- Department of Food, Nutrition and Dietetics, La Trobe University, Bundoora, Victoria, Australia
| | - Stephanie M Resciniti
- Department of Food, Nutrition and Dietetics, La Trobe University, Bundoora, Victoria, Australia
| | - Bradley J Wright
- Department of Psychology, Counselling, and Therapy, La Trobe University, Bundoora, Victoria, Australia
| | - Matthew W Hale
- Department of Psychology, Counselling, and Therapy, La Trobe University, Bundoora, Victoria, Australia
| | - Chu K Yao
- Department of Gastroenterology, Monash University, Alfred Health, Melbourne, Victoria, Australia
| | - Caroline J Tuck
- Department of Food, Nutrition and Dietetics, La Trobe University, Bundoora, Victoria, Australia
- Department of Nursing and Allied Health, Swinburne University, Hawthorn, Victoria, Australia
| | - Jessica R Biesiekierski
- Department of Food, Nutrition and Dietetics, La Trobe University, Bundoora, Victoria, Australia
- Department of Nutrition, Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
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Rettura F, Lambiase C, Grosso A, Rossi A, Tedeschi R, Ceccarelli L, Bellini M. Role of Low-FODMAP diet in functional dyspepsia: "Why", "When", and "to Whom". Best Pract Res Clin Gastroenterol 2023; 62-63:101831. [PMID: 37094910 DOI: 10.1016/j.bpg.2023.101831] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 03/30/2023] [Indexed: 04/26/2023]
Abstract
Functional dyspepsia (FD) is a frequent disorder of gut-brain interaction, affecting 5-7% of people globally, with significant impairment in quality of life. The management of FD is challenging due to the lack of specific therapeutic approaches. Although food seems to play a role in symptom production, its pathophysiologic role in patients with FD is not fully understood. Most FD patients report that their symptoms are triggered by food, especially in the post-prandial distress syndrome (PDS) group, although evidence to support the use of dietary interventions are limited. FODMAPs can increase production of gas in the intestinal lumen, through fermentation by intestinal bacteria, can exert osmotic effects by increasing water volume and can cause an excessive production of short-chain fatty acids (propionate, butyrate, and acetate). Emerging scientific evidence, confirmed by recent clinical trials, suggest that FODMAPs could be involved in the pathogenesis of FD. Given the consolidated approach of the Low-FODMAP Diet (LFD) in irritable bowel syndrome (IBS) management and emerging scientific evidence regarding the LFD in FD, a therapeutic role of this diet may be hypothesized also in FD, either alone or in combination with other therapies.
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Affiliation(s)
- Francesco Rettura
- Gastrointestinal Unit, Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56010, Pisa, Italy
| | - Christian Lambiase
- Gastrointestinal Unit, Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56010, Pisa, Italy.
| | - Antonio Grosso
- Gastrointestinal Unit, Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56010, Pisa, Italy
| | - Alessandra Rossi
- Clinical and Experimental Medicine-Rheumatology Unit, University of Pisa, 56100, Pisa, Italy
| | - Riccardo Tedeschi
- Gastrointestinal Unit, Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56010, Pisa, Italy
| | - Linda Ceccarelli
- Gastrointestinal Unit, Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56010, Pisa, Italy
| | - Massimo Bellini
- Gastrointestinal Unit, Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56010, Pisa, Italy
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Sato H, Grover M. Gastroparesis and Functional Dyspepsia: Spectrum of Gastroduodenal Neuromuscular Disorders or Unique Entities? GASTRO HEP ADVANCES 2023; 2:438-448. [PMID: 37151911 PMCID: PMC10162778 DOI: 10.1016/j.gastha.2022.10.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Gastroparesis is defined by delayed gastric emptying in the absence of mechanical obstruction of the stomach. Patients experience symptoms of nausea, vomiting, abdominal pain, fullness, and early satiety. The recognition of the disorder has progressed due to availability of gastric emptying scintigraphy and advancements made in understanding its pathophysiology and treatment options. The clinical presentation and treatment of gastroparesis overlap with a more commonly recognized disorder of gut-brain interaction, functional dyspepsia. Recent studies have reenergized the discussion whether these two are separate entities or perhaps reflect a spectrum of gastroduodenal neuromuscular disorders. The societal guidelines conflict on the utility of gastric emptying scintigraphy in assessment of patients with upper gastrointestinal symptoms. A better appraisal of similarities and differences between gastroparesis and functional dyspepsia will allow targeted treatment for these disorders. This is particularly important as specific pharmacological and endoscopic treatment options are being developed for gastroparesis which are unlikely to be helpful for functional dyspepsia. This review makes the case for considering these disorders in a spectrum where identification of both would most ideally position us toward providing the optimal clinical care.
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Affiliation(s)
- Hiroki Sato
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
- Division of Gastroenterology & Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Madhusudan Grover
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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Pomenti S, Devinsky J, Jodorkovsky D. Diet for Functional Gastrointestinal Disorders/Disorders of Gut-Brain Interaction. Med Clin North Am 2022; 106:899-912. [PMID: 36154707 DOI: 10.1016/j.mcna.2022.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Dietary interventions may alleviate symptoms related to functional gastrointestinal disorders, now termed disorders of gut-brain interaction. We reviewed which interventions have high-quality data to support their use in gastroesophageal reflux disease (GERD), functional dyspepsia (FD), irritable bowel syndrome, and chronic idiopathic constipation.
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Affiliation(s)
- Sydney Pomenti
- Division of Digestive and Liver Diseases, Columbia University Irving Medical Center, 630 West 168th Street Suite 3-401, New York, NY 10032, USA
| | - Julie Devinsky
- Division of Digestive and Liver Diseases, Columbia University Irving Medical Center, 630 West 168th Street Suite 3-401, New York, NY 10032, USA
| | - Daniela Jodorkovsky
- Division of Digestive and Liver Diseases, Columbia University Irving Medical Center, 630 West 168th Street Suite 3-401, New York, NY 10032, USA.
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Black CJ, Paine PA, Agrawal A, Aziz I, Eugenicos MP, Houghton LA, Hungin P, Overshott R, Vasant DH, Rudd S, Winning RC, Corsetti M, Ford AC. British Society of Gastroenterology guidelines on the management of functional dyspepsia. Gut 2022; 71:1697-1723. [PMID: 35798375 PMCID: PMC9380508 DOI: 10.1136/gutjnl-2022-327737] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/21/2022] [Indexed: 01/30/2023]
Abstract
Functional dyspepsia (FD) is a common disorder of gut-brain interaction, affecting approximately 7% of individuals in the community, with most patients managed in primary care. The last British Society of Gastroenterology (BSG) guideline for the management of dyspepsia was published in 1996. In the interim, substantial advances have been made in understanding the complex pathophysiology of FD, and there has been a considerable amount of new evidence published concerning its diagnosis and classification, with the advent of the Rome IV criteria, and management. The primary aim of this guideline, commissioned by the BSG, is to review and summarise the current evidence to inform and guide clinical practice, by providing a practical framework for evidence-based diagnosis and treatment of patients. The approach to investigating the patient presenting with dyspepsia is discussed, and efficacy of drugs in FD summarised based on evidence derived from a comprehensive search of the medical literature, which was used to inform an update of a series of pairwise and network meta-analyses. Specific recommendations have been made according to the Grading of Recommendations Assessment, Development and Evaluation system. These provide both the strength of the recommendations and the overall quality of evidence. Finally, in this guideline, we consider novel treatments that are in development, as well as highlighting areas of unmet need and priorities for future research.
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Affiliation(s)
- Christopher J Black
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
- Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | - Peter A Paine
- Division of Diabetes, Endocrinology and Gastroenterology, University of Manchester, Manchester, UK
- Gastroenterology, Salford Royal NHS Foundation Trust, Salford, UK
| | - Anurag Agrawal
- Doncaster and Bassetlaw Hospitals NHS Trust, Doncaster, UK
| | - Imran Aziz
- Academic Unit of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
- Department of Infection, Immunity, and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Maria P Eugenicos
- Department of Gastroenterology, University of Edinburgh, Edinburgh, UK
| | - Lesley A Houghton
- Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | - Pali Hungin
- Primary Care and General Practice, University of Newcastle, Newcastle, UK
| | - Ross Overshott
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Dipesh H Vasant
- Division of Diabetes, Endocrinology and Gastroenterology, University of Manchester, Manchester, UK
- Neurogastroenterology Unit, Gastroenterology, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Sheryl Rudd
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK
- University of Nottingham and Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Richard C Winning
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK
- University of Nottingham and Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Maura Corsetti
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK
- University of Nottingham and Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Alexander C Ford
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
- Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
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Agah S, Aminianfar A, Hassanzadeh Keshteli A, Bitarafan V, Adibi P, Esmaillzadeh A, Feinle-Bisset C. Association between Dietary Macronutrient Intake and Symptoms in Uninvestigated Dyspepsia: Evidence from a Population-Based, Cross-Sectional Study. Nutrients 2022; 14:nu14132577. [PMID: 35807757 PMCID: PMC9268281 DOI: 10.3390/nu14132577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/18/2022] [Accepted: 06/20/2022] [Indexed: 02/04/2023] Open
Abstract
(1) Background: Limited evidence from laboratory-based studies suggests that specific dietary macronutrients, particularly fat, can induce dyspeptic symptoms. Through a population-based study, we investigated the relationship between dietary macronutrients and dyspeptic symptoms and sought to determine macronutrient intake thresholds to predict or prevent dyspepsia and reduce symptoms in patients with dyspepsia. (2) Methods: A total of 4763 Iranian people were enrolled in this population-based, cross-sectional study. Uninvestigated dyspepsia (UD) and its symptoms, including postprandial fullness, early satiation, and epigastric pain, were evaluated using a modified Persian version of the Rome III criteria. The dietary intakes of participants were evaluated using a validated food−frequency questionnaire. Receiver operating characteristic (ROC) curve analysis was used to calculate threshold intakes of dietary macronutrients to prevent UD in the general population. The analysis was then repeated in those with UD to calculate intake thresholds for reducing UD symptoms. (3) Results: Early satiation occurred in 6.3% (n = 302), postprandial fullness in 8.0% (n = 384) and epigastric pain in 7.8% (n = 371) of participants. The prevalence of UD was 15.2%. Compared with individuals without UD, those with UD had a lower intake of carbohydrates (48.2% vs. 49.1%) and a higher intake of fats (38.3% vs. 37.4%), while protein and energy intakes did not differ. Higher dietary fat and protein intakes were associated with a higher prevalence of postprandial fullness and epigastric pain, respectively. Macronutrient intakes to predict UD in the general population were <49% of energy from carbohydrates, >14.7% from protein, and >37.7% from fats. Carbohydrate, protein, and fat intakes to prevent symptoms among those with UD were calculated to be >48.2%, <14.6%, and <38.6%, respectively. (4) Conclusion: Higher carbohydrate intake and lower fat or protein intakes were associated with a lower likelihood of UD. Prospective studies carefully manipulating dietary macronutrient composition are warranted to investigate the value of dietary changes to improve symptoms in people with UD.
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Affiliation(s)
- Shahram Agah
- Colorectal Research Centre, Iran University of Medical Sciences, Tehran 1445613131, Iran;
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Azadeh Aminianfar
- Research Centre for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan 8715988141, Iran;
| | - Ammar Hassanzadeh Keshteli
- Department of Medicine, University of Alberta, Edmonton, AB T6G 2P5, Canada;
- Integrative Functional Gastroenterology Research Centre, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran
| | - Vida Bitarafan
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia;
- Centre of Research Excellence in Translating Nutritional Sciences to Good Health, University of Adelaide, Adelaide, SA 5005, Australia
| | - Peyman Adibi
- Gastroenterology and Hepatology Research Centre, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran;
| | - Ahmad Esmaillzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran 1416634793, Iran
- Obesity and Eating Habits Research Centre, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran 1416634793, Iran
- Department of Community Nutrition, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran
- Correspondence: (A.E.); (C.F.-B.)
| | - Christine Feinle-Bisset
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia;
- Centre of Research Excellence in Translating Nutritional Sciences to Good Health, University of Adelaide, Adelaide, SA 5005, Australia
- Correspondence: (A.E.); (C.F.-B.)
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Tack J, Tornblom H, Tan V, Carbone F. Evidence-Based and Emerging Dietary Approaches to Upper Disorders of Gut-Brain Interaction. Am J Gastroenterol 2022; 117:965-972. [PMID: 35417429 PMCID: PMC9169754 DOI: 10.14309/ajg.0000000000001780] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/09/2022] [Indexed: 01/10/2023]
Abstract
Food ingestion is a major symptom trigger in functional esophageal and gastroduodenal disorders and gastroparesis. This review summarizes current knowledge and identifies areas of research on the role of food factors and the opportunities for dietary intervention in these disorders. While many patients experiencing functional esophageal and gastroduodenal disorders identify specific food items as symptom triggers, available data do not allow the identification of specific nutrient groups that are more likely to induce symptoms. In functional dyspepsia (FD), recent studies have shown the potential efficacy of a diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols, although the underlying mechanism of action is unclear. Reports of favorable responses to gluten elimination in patients with FD are confounded by the concomitant benefit of reduced intake of fructans, fermentable oligosaccharides, disaccharides, monosaccharides, and polyols present in wheat. Emerging data based on a 6-food elimination diet and confocal laser endomicroscopic evaluation of mucosal responses to food proteins suggest a role for duodenal allergic reactions in FD symptom generation. In patients with gastroparesis, a low-residue diet has been shown to improve symptoms. Novel dietary approaches under evaluation are the Mediterranean diet and the heating/cooling diet approach.
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Affiliation(s)
- Jan Tack
- Division of Gastroenterology and Hepatology, Leuven University Hospitals, Leuven, Belgium
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism, University of Leuven, Leuven, Belgium
- Rome Foundation for Disorders of Gut Brain Interactions (DGBIs), Chapel Hill, North Carolina, USA
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Hans Tornblom
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Victoria Tan
- Department of Medicine, The University of Hong Kong, Hong Kong SAR
| | - Florencia Carbone
- Division of Gastroenterology and Hepatology, Leuven University Hospitals, Leuven, Belgium
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Biesiekierski JR, Tuck CJ. Low FODMAP diet beyond IBS: Evidence for use in other conditions. Curr Opin Pharmacol 2022; 64:102208. [DOI: 10.1016/j.coph.2022.102208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 11/29/2022]
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Popa SL, Dumitrascu DI, Pop C, Surdea-Blaga T, Ismaiel A, Chiarioni G, Dumitrascu DL, Brata VD, Grad S. Exclusion Diets in Functional Dyspepsia. Nutrients 2022; 14:nu14102057. [PMID: 35631198 PMCID: PMC9144481 DOI: 10.3390/nu14102057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/13/2022] [Indexed: 02/01/2023] Open
Abstract
Functional dyspepsia represents one of the most common and prevalent disorders of the brain–gut interaction, with a large number of widespread risk factors being identified. With an intricate pathogenesis and symptomatology, it heavily impacts the quality of life and, due to the limited efficacy of traditional pharmacological agents, patients are likely to seek other medical and non-medical solutions to their problem. Over the last few years, significant research in this domain has emphasized the importance of various psychological therapies and nutritional recommendations. Nevertheless, a correlation has been established between functional dyspepsia and food intolerances, with more and more patients adopting different kinds of exclusion diets, leading to weight loss, restrictive eating behaviour and an imbalanced nutritional state, further negatively impacting their quality of life. Thus, in this systematic review, we aimed at analysing the impact and efficiency of certain exclusion diets undertook by patients, more precisely, the gluten-free diet and the low-FODMAP diet.
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Affiliation(s)
- Stefan Lucian Popa
- 2nd Medical Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania; (S.L.P.); (T.S.-B.); (A.I.); (D.L.D.); (S.G.)
| | - Dinu Iuliu Dumitrascu
- Department of Anatomy, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400006 Cluj-Napoca, Romania
- Correspondence:
| | - Cristina Pop
- Department of Pharmacology, Physiology, and Pathophysiology, Faculty of Pharmacy, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania;
| | - Teodora Surdea-Blaga
- 2nd Medical Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania; (S.L.P.); (T.S.-B.); (A.I.); (D.L.D.); (S.G.)
| | - Abdulrahman Ismaiel
- 2nd Medical Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania; (S.L.P.); (T.S.-B.); (A.I.); (D.L.D.); (S.G.)
| | - Giuseppe Chiarioni
- Division of Gastroenterology, University of Verona, AOUI Verona, 37134 Verona, Italy;
- Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7080, USA
| | - Dan Lucian Dumitrascu
- 2nd Medical Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania; (S.L.P.); (T.S.-B.); (A.I.); (D.L.D.); (S.G.)
| | - Vlad Dumitru Brata
- Faculty of Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania;
| | - Simona Grad
- 2nd Medical Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400000 Cluj-Napoca, Romania; (S.L.P.); (T.S.-B.); (A.I.); (D.L.D.); (S.G.)
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13
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Crawley C, Savino N, Halby C, Sander SD, Andersen AN, Arumugam M, Murray J, Christensen R, Husby S. The effect of gluten in adolescents and young adults with gastrointestinal symptoms: a blinded randomised cross-over trial. Aliment Pharmacol Ther 2022; 55:1116-1127. [PMID: 35352373 PMCID: PMC9313792 DOI: 10.1111/apt.16914] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/17/2021] [Accepted: 03/20/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND The popularity of the gluten-free diet and sales of gluten-free products have increased immensely. AIMS To investigate whether gluten induces gastrointestinal symptoms, measured by self-reported questionnaires, as well as mental health symptoms in adolescents from a population-based cohort. METHODS The eligible participants (n = 273) were recruited from a population-based cohort of 1266 adolescents and had at least four different gastrointestinal symptoms. Phase one (n = 54) was a run-in phase where the participants lived gluten-free for 2 weeks. If they improved they continued to phase 2 (n = 33), a blinded randomised cross-over trial. Participants were blindly randomised either to start with 7 days of gluten, eating two granola bars containing 10 g of gluten or to 7 days on placebo, eating two granola bars without gluten, followed by the reverse and separated by a 7-day washout period. The effects of the intervention on gastrointestinal symptoms and mental health symptoms were assessed. RESULTS In total, 54/273 participants entered the run-in phase and 35 were eligible for randomization. A total of 33 were randomised and 32 completed the trial. The median age was 20.3 (IQR 19.2-20.9) and 32/33 participants were females. Compared with a placebo, gluten did not induce gastrointestinal symptoms. The difference in the average VAS was -0.01 (95% confidence interval -2.07 to 2.05). Nor did we find a difference in the outcomes measuring mental health. CONCLUSION Compared with placebo, adding gluten to the diet did not induce gastrointestinal symptoms or worsened mental health in adolescents recruited from a population-based cohort. The trial registration number is NCT04639921.
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Affiliation(s)
- Caecilie Crawley
- Hans Christian Andersen Children’s HospitalOdense University HospitalOdenseDenmark,Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
| | - Nadia Savino
- Hans Christian Andersen Children’s HospitalOdense University HospitalOdenseDenmark,Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
| | - Cecilie Halby
- Hans Christian Andersen Children’s HospitalOdense University HospitalOdenseDenmark,Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
| | | | | | - Manimozhiyan Arumugam
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark,Department of Gastroenterology and HepatologyOdense University HospitalOdenseDenmark
| | - Joseph Murray
- Division of Gastroenterology and Hepatology, Department of Internal MedicineMayo ClinicRochesterMinnesotaUSA
| | - Robin Christensen
- Section for Biostatistics and Evidence‐Based Research, the Parker InstituteBispebjerg and Frederiksberg HospitalCopenhagenDenmark,Research Unit of Rheumatology, Department of Clinical ResearchUniversity of Southern Denmark, Odense University HospitalOdenseDenmark
| | - Steffen Husby
- Hans Christian Andersen Children’s HospitalOdense University HospitalOdenseDenmark,Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
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14
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Ceulemans M, Jacobs I, Wauters L, Vanuytsel T. Immune Activation in Functional Dyspepsia: Bystander Becoming the Suspect. Front Neurosci 2022; 16:831761. [PMID: 35557605 PMCID: PMC9087267 DOI: 10.3389/fnins.2022.831761] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/25/2022] [Indexed: 11/13/2022] Open
Abstract
Disorders of gut-brain interaction (DGBI), formerly termed functional gastrointestinal disorders (FGID), are highly prevalent although exact pathophysiological mechanisms remain unclear. Intestinal immune activation has been recognized, but increasing evidence supports a pivotal role for an active inflammatory state in these disorders. In functional dyspepsia (FD), marked eosinophil and mast cell infiltration has been repeatedly demonstrated and associations with symptoms emphasize the relevance of an eosinophil-mast cell axis in FD pathophysiology. In this Review, we highlight the importance of immune activation in DGBI with a focus on FD. We summarize eosinophil biology in both homeostasis and inflammatory processes. The evidence for immune activation in FD is outlined with attention to alterations on both cellular and molecular level, and how these may contribute to FD symptomatology. As DGBI are complex and multifactorial conditions, we shed light on factors associated to, and potentially influencing immune activation, including bidirectional gut-brain interaction, allergy and the microbiota. Crucial studies reveal a therapeutic benefit of treatments targeting immune activation, suggesting that specific anti-inflammatory therapies could offer renewed hope for at least a subset of DGBI patients. Lastly, we explore the future directions for DGBI research that could advance the field. Taken together, emerging evidence supports the recognition of FD as an immune-mediated organic-based disorder, challenging the paradigm of a strictly functional nature.
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Affiliation(s)
- Matthias Ceulemans
- Department of Chronic Diseases and Metabolism, Translational Research Center for Gastrointestinal Disorders (TARGID), Katholieke Universiteit Leuven, Leuven, Belgium
| | - Inge Jacobs
- Allergy and Clinical Immunology Research Group, Department of Microbiology, Immunology and Transplantation, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Lucas Wauters
- Department of Chronic Diseases and Metabolism, Translational Research Center for Gastrointestinal Disorders (TARGID), Katholieke Universiteit Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
| | - Tim Vanuytsel
- Department of Chronic Diseases and Metabolism, Translational Research Center for Gastrointestinal Disorders (TARGID), Katholieke Universiteit Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
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15
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Goyal O, Nohria S, Batta S, Dhaliwal A, Goyal P, Sood A. Low fermentable oligosaccharides, disaccharides, monosaccharides, and polyols diet versus traditional dietary advice for functional dyspepsia: a randomized controlled trial. J Gastroenterol Hepatol 2022; 37:301-309. [PMID: 34555865 DOI: 10.1111/jgh.15694] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/24/2021] [Accepted: 09/21/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Prospective trials evaluating efficacy of specific diet restriction in functional dyspepsia (FD) are scarce. We aimed to assess efficacy of low fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAP) diet in FD, compared with traditional dietary advice (TDA). METHODS In this prospective, single-blind trial, patients with FD (Rome IV) were randomized into low FODMAP diet (LFD) and TDA groups, for 4 weeks (phase I). In phase II (4-12 weeks), LFD group was advised systematic re-introduction of FODMAPs. Symptom severity and quality of life were assessed using "Short-Form Nepean Dyspepsia Index (SF-NDI)." Primary outcome was symptomatic response (symptom score reduction of ≥ 50%), at 4 weeks. Study was registered with CTRI (2019/06/019852). RESULTS Of 184 patients screened, 105 were randomized to LFD (n = 54) and TDA (n = 51) groups. At 4 weeks, both groups showed significant reduction in SF-NDI symptom scores compared with baseline, with no significant difference in inter-group response rates [LFD: 66.7% (36/54); TDA: 56.9% (29/51); P = 0.32]. On sub-group analysis, patients with postprandial distress syndrome or bloating had significantly better symptomatic response with LFD (P = 0.04). SF-NDI quality of life scores improved significantly in both groups. On multivariate analysis, factors predicting response to LFD were bloating and male gender. Incidences of adverse events (minor) were similar in both groups. CONCLUSIONS In patients with FD, LFD and TDA lead to significant symptomatic and quality of life improvement. Patients with postprandial distress syndrome or bloating respond significantly better to LFD. Therefore, dietary advice for FD should be individualized according to FD subtype.
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Affiliation(s)
- Omesh Goyal
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
| | - Sahil Nohria
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
| | - Shaveta Batta
- Department of Dietetics, Dayanand Medical College and Hospital, Ludhiana, India
| | - Armaan Dhaliwal
- Department of Medicine, Dayanand Medical College and Hospital, Ludhiana, India
| | - Prerna Goyal
- Department of Medicine, Baba Jaswant Singh Dental College Hospital and Research Institute, Ludhiana, India
| | - Ajit Sood
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
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16
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Self-reported nonceliac wheat sensitivity in an outpatient digestive endoscopy center: high frequency but insufficient medical approach. Eur J Gastroenterol Hepatol 2021; 33:e789-e795. [PMID: 34334709 DOI: 10.1097/meg.0000000000002257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE 'Self-reported wheat sensitivity' (SRWS) is a self-reported condition caused by wheat ingestion in the absence of celiac disease or wheat allergy. The aim of the study was to investigate the frequency and characteristics of SRWS in outpatients referred for digestive endoscopy. METHODS The study, performed at the University of Palermo, enrolled 496 outpatients. RESULTS Seven individuals (1.4%) had an already established diagnosis of celiac disease. The questionnaire was administered to the other 489 individuals: 98 subjects (20%) were SRWS, the remaining 391 served as controls (i.e. not-SRWS). SRWS patients were younger (P < 0.001), with a higher percentage of females (P = 0.002) than not-SRWS. 'gastroesophageal reflux disease and ulcer-like dyspepsia' and 'chronic unexplained diarrhea' were more frequently the reasons for the endoscopy study in SRWS than in not-SRWS (P = 0.002, and P = 0.05, respectively). Food allergies/intolerances (P = 0.04), milk allergy/intolerance (P = 0.0001), GERD (P = 0.0001), IBS (0.0001), anxiety (P = 0.005) and depression (P = 0.04) were the previous medical diagnoses reported more frequently in SRWS patients than in not-SRWS. In the SRWS group, 38% of the patients had already undergone previous upper endoscopy and 24% colonoscopy. After these investigations, 58% of SRWS patients received no diagnosis, and the other 42% were informed that they 'were not suffering from celiac disease or wheat allergy'. Finally, 28.6% SRWS patients had followed a gluten-free diet (GFD), and 71.4% of them referred being asymptomatic on GFD. CONCLUSIONS Our data showed a high frequency of SRWS in outpatients referred to a digestive endoscopy center and a lack of medical accuracy in identifying a possible gluten-related disease. REGISTRATION The study was registered on Clinicaltrials.gov (registration number: NCT04154137), accessible at: https://clinicaltrials.gov/ct2/show/NCT04154137?term=non+celiac+wheat&draw=2&rank=1.
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Moshiree B, Talley NJ. Functional dyspepsia: A critical appraisal of the European consensus from a global perspective. Neurogastroenterol Motil 2021; 33:e14216. [PMID: 34337832 DOI: 10.1111/nmo.14216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/14/2021] [Accepted: 06/22/2021] [Indexed: 12/12/2022]
Abstract
The European Society for Neurogastroenterology and Motility's (ESNM) consensus document on functional dyspepsia (FD) has provided a critical review of the evidence for 36 statements highly relevant to the diagnosis and treatment of FD. We provide here our expert opinion on the North American, Australian and Asian assessments of the same topics discussed, and provide evidence where the ESNM consensus may deviate from those in the other continents. New and exciting data about the pathogenesis of FD are emerging including the possible central role of duodenal micro-inflammation (most notably eosinophilic duodenitis and intestinal mast cell disease), but this is a very dynamic field with several gaps remaining in our understanding that are summarized in this review. Identification of non-invasive biomarkers and testing of targeted therapies, including assessing the benefits of multidisciplinary teams in the management of FD, should be future priorities.
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Affiliation(s)
- Baha Moshiree
- Atrium Health Division of Gastroenterology, Hepatology and Nutrition, Charlotte, North Carolina, USA
| | - Nicholas J Talley
- Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia.,NHMRC Centre of Research Excellence in Digestive Health, Newcastle, NSW, Australia.,Australian GI Research Alliance (AGIRA, Newcastle, NSW, Australia
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18
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Ponzo V, Ferrocino I, Goitre I, Pellegrini M, Bruno M, Astegiano M, Cadario G, Castellana E, Bioletto F, Corvaglia MR, Malfa P, Cocolin L, Ghigo E, Bo S. Non-Celiac Gluten/Wheat Sensitivity: Clinical Characteristics and Microbiota and Mycobiota Composition by Response to the Gluten Challenge Test. Nutrients 2021; 13:nu13041260. [PMID: 33921293 PMCID: PMC8070191 DOI: 10.3390/nu13041260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 12/12/2022] Open
Abstract
The aims of this observational “proof-of-concept” study were to analyze the clinical/psychological characteristics and gut microbiota/mycobiota composition of individuals with suspected non-celiac gluten/wheat sensitivity (NCGS/WS) according to responses to the double-blind-placebo-controlled (DBPC) crossover gluten challenge test. Fifty individuals with suspected NCGS/WS were subjected to the DBPC challenge test; anthropometric measurements, psychometric questionnaires, and fecal samples were collected. Twenty-seven (54%) participants were gluten responsive (NCGS), and 23 were placebo responsive, with an order effect. NCGS individuals displayed a significantly lower risk of eating disorders and a higher mental health score when compared to placebo-responsive participants, confirmed by multiple logistic regression analyses (OR = 0.87; 95% CI 0.76–0.98, p = 0.021, and OR = 1.30; 95% CI 1.06–1.59, p = 0.009, respectively). Principal coordinate analyses based on microbiota composition showed a separation by the DBPC response (p = 0.039). For Bacteroides (p = 0.05) and Parabacteroides (p = 0.007), the frequency of amplicon sequence variants was lower, and that for Blautia (p = 0.009) and Streptococcus (p = 0.004) was higher in NCGS individuals at multiple regression analyses. No difference in the mycobiota composition was detected between the groups. In conclusion, almost half of the individuals with suspected gluten sensitivity reported symptoms with placebo; they showed lower mental health scores, increased risk for eating disorders, and a different gut microbiota composition.
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Affiliation(s)
- Valentina Ponzo
- Department of Medical Sciences, University of Torino, 10126 Torino, Italy; (V.P.); (I.G.); (M.P.); (F.B.); (E.G.)
| | - Ilario Ferrocino
- Department of Agricultural, Forestry and Food Science, University of Torino, 10095 Torino, Italy; (M.R.C.); (L.C.)
- Correspondence: (I.F.); (S.B.); Tel.: +39-11-633-6036 (S.B.)
| | - Ilaria Goitre
- Department of Medical Sciences, University of Torino, 10126 Torino, Italy; (V.P.); (I.G.); (M.P.); (F.B.); (E.G.)
| | - Marianna Pellegrini
- Department of Medical Sciences, University of Torino, 10126 Torino, Italy; (V.P.); (I.G.); (M.P.); (F.B.); (E.G.)
| | - Mauro Bruno
- Gastroenterology and Digestive Endoscopy Unit, “Città della Salute e della Scienza” Hospital, 10126 Torino, Italy; (M.B.); (M.A.)
| | - Marco Astegiano
- Gastroenterology and Digestive Endoscopy Unit, “Città della Salute e della Scienza” Hospital, 10126 Torino, Italy; (M.B.); (M.A.)
| | - Gianni Cadario
- Allergology and Clinical Immunology Unit, “Città della Salute e della Scienza” Hospital, 10126 Torino, Italy;
| | - Eleonora Castellana
- Hospital Pharmacy, “Città della Salute e della Scienza” Hospital, 10126 Torino, Italy;
| | - Fabio Bioletto
- Department of Medical Sciences, University of Torino, 10126 Torino, Italy; (V.P.); (I.G.); (M.P.); (F.B.); (E.G.)
| | - Maria Rita Corvaglia
- Department of Agricultural, Forestry and Food Science, University of Torino, 10095 Torino, Italy; (M.R.C.); (L.C.)
| | | | - Luca Cocolin
- Department of Agricultural, Forestry and Food Science, University of Torino, 10095 Torino, Italy; (M.R.C.); (L.C.)
| | - Ezio Ghigo
- Department of Medical Sciences, University of Torino, 10126 Torino, Italy; (V.P.); (I.G.); (M.P.); (F.B.); (E.G.)
| | - Simona Bo
- Department of Medical Sciences, University of Torino, 10126 Torino, Italy; (V.P.); (I.G.); (M.P.); (F.B.); (E.G.)
- Correspondence: (I.F.); (S.B.); Tel.: +39-11-633-6036 (S.B.)
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Duncanson K, Burns G, Pryor J, Keely S, Talley NJ. Mechanisms of Food-Induced Symptom Induction and Dietary Management in Functional Dyspepsia. Nutrients 2021; 13:1109. [PMID: 33800668 PMCID: PMC8066021 DOI: 10.3390/nu13041109] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 12/12/2022] Open
Abstract
Functional dyspepsia (FD) is a common disorder of gut-brain interaction, characterised by upper gastrointestinal symptom profiles that differentiate FD from the irritable bowel syndrome (IBS), although the two conditions often co-exist. Despite food and eating being implicated in FD symptom induction, evidence-based guidance for dietetic management of FD is limited. The aim of this narrative review is to collate the possible mechanisms for eating-induced and food-related symptoms of FD for stratification of dietetic management. Specific carbohydrates, proteins and fats, or foods high in these macronutrients have all been reported as influencing FD symptom induction, with removal of 'trigger' foods or nutrients shown to alleviate symptoms. Food additives and natural food chemicals have also been implicated, but there is a lack of convincing evidence. Emerging evidence suggests the gastrointestinal microbiota is the primary interface between food and symptom induction in FD, and is therefore a research direction that warrants substantial attention. Objective markers of FD, along with more sensitive and specific dietary assessment tools will contribute to progressing towards evidence-based dietetic management of FD.
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Affiliation(s)
- Kerith Duncanson
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW 2308, Australia; (G.B.); (J.P.); (S.K.)
- Centre for Research Excellence, Digestive Health, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Grace Burns
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW 2308, Australia; (G.B.); (J.P.); (S.K.)
- Centre for Research Excellence, Digestive Health, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Jennifer Pryor
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW 2308, Australia; (G.B.); (J.P.); (S.K.)
- Centre for Research Excellence, Digestive Health, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Simon Keely
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW 2308, Australia; (G.B.); (J.P.); (S.K.)
- Centre for Research Excellence, Digestive Health, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Nicholas J. Talley
- College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW 2308, Australia; (G.B.); (J.P.); (S.K.)
- Centre for Research Excellence, Digestive Health, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- Department of Gastroenterology, John Hunter Hospital, New Lambton Heights, NSW 2305, Australia
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20
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New Perspectives on Gluten-Free Diet. Nutrients 2020; 12:nu12113540. [PMID: 33218026 PMCID: PMC7698749 DOI: 10.3390/nu12113540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 11/17/2020] [Indexed: 12/12/2022] Open
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