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Expert Review of Clinical Immunology Oct 2018Functional dyspepsia (FD) is widespread with 20% prevalence worldwide and a significant economic burden due to health care cost and constraints on daily activities of... (Review)
Review
Functional dyspepsia (FD) is widespread with 20% prevalence worldwide and a significant economic burden due to health care cost and constraints on daily activities of patients. Despite extensive investigation, the underlying causes of dyspepsia in a majority of patients remain unknown. Common complaints include abdominal discomfort, pain, burning, nausea, early satiety, and bloating. Motor dysfunction of the gut was long considered a major cause, but recent investigations suggest immune-based pathophysiological and molecular events in the duodenum are more probable contributing factors. Areas Covered: Inflammatory mediators and immune cells including duodenal eosinophils, intraepithelial lymphocytes, and T-cells have been implicated in the underlying cause of disease process, as have genetic factors. In this article, we critically reviewed findings, identified gaps in knowledge and suggested future directions for further investigation to identify targets and develop better therapeutic approaches. Expert commentary: Impaired gastric accommodation, slow gastric emptying, and increased visceral sensitivity have long been thought of as main causal factors of FD. However, more recent identification of eosinophilic degranulation and recruitment of T cells that induce mild duodenal inflammation are giving rise to new insights into immune-mediated pathophysiology. These insights offer promising avenues to explore for immune-mediated therapy in the future.
Topics: Dyspepsia; Humans
PubMed: 30235962
DOI: 10.1080/1744666X.2018.1524756 -
Cleveland Clinic Journal of Medicine May 2024Functional dyspepsia is defined as persistent symptoms of postprandial bloating, early satiety, or pain in the center of the upper abdomen, without findings on upper... (Review)
Review
Functional dyspepsia is defined as persistent symptoms of postprandial bloating, early satiety, or pain in the center of the upper abdomen, without findings on upper endoscopy such as peptic ulcer disease to explain these symptoms. It is common, affecting up to 30% of the global population, but it often goes undiagnosed for years. There are 2 subtypes: epigastric pain syndrome (burning and pain) and postprandial distress syndrome (bloating and satiety). The authors discuss how to diagnose and treat both subtypes.
Topics: Humans; Dyspepsia; Abdominal Pain; Postprandial Period
PubMed: 38692696
DOI: 10.3949/ccjm.91a.23062 -
Revue Medicale Suisse Sep 2022Dyspepsia is defined as epigastric pain that lasts at least one month and may be associated with a range of other upper gastrointestinal symptoms. Approximately 2/3 of...
Dyspepsia is defined as epigastric pain that lasts at least one month and may be associated with a range of other upper gastrointestinal symptoms. Approximately 2/3 of outpatients with dyspepsia have a functional dyspepsia. The clinical assessment of dyspepsia is based on age of patients as well and the search for severity criteria. The endoscopy in cases of new-onset dyspepsia is recommended from an age of 55-60 and the presence of at least 1 severity criteria. A non-invasive test for Helicobacter pylori (HP) should be performed in all patients and followed by HP eradication when HP test is positive. The first-choice treatment of functional dyspepsia is a proton pump inhibitor (PPI) at maximal dose for 8 weeks. A therapeutic trial with a prokinetic or a central neuromodulator are alternatives to consider in case of failure of PPI treatment.
Topics: Dyspepsia; Gastritis; Helicobacter Infections; Helicobacter pylori; Humans; Proton Pump Inhibitors
PubMed: 36170129
DOI: 10.53738/REVMED.2022.18.797.1784 -
Digestive Diseases and Sciences May 2018The role of gastritis in dyspepsia remains controversial. We aimed to examine the efficacy of rebamipide, a gastric mucosal protective agent, in both organic and... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
The role of gastritis in dyspepsia remains controversial. We aimed to examine the efficacy of rebamipide, a gastric mucosal protective agent, in both organic and functional dyspepsia.
DESIGN
A systematic review and meta-analysis was performed. The following databases were searched using the keywords ("rebamipide" OR "gastroprotective agent*" OR "mucosta") AND ("dyspepsia" OR "indigestion" OR "gastrointestinal symptoms"): PubMed, Wed of Science, Embase, CINAHL, Cochrane Clinical Trials Register. The primary outcome was dyspepsia or upper GI symptom score improvement. Pooled analysis of the main outcome data were presented as risk ratio (RR) for dichotomous data and standardized mean difference (SMD) for continuous data.
RESULTS
From an initial 248 records, 17 randomised controlled trial (RCT) publications involving 2170 subjects (1224 rebamipide, 946 placebo/control) were included in the final analysis. Twelve RCTs were conducted in subjects with organic dyspepsia (peptic ulcer disease, reflux esophagitis or NSAID-induced gastropathy) and five RCTs were conducted in patients with functional dyspepsia (FD). Overall, dyspepsia symptom improvement was significantly better with rebamipide compared to placebo/control drug (RR 0.77, 95% CI = 0.64-0.93; SMD -0.46, 95% CI = -0.83 to -0.09). Significant symptom improvement was observed both in pooled RR and SMD in subjects with organic dyspepsia (RR 0.72, 95% CI = 0.61-0.86; SMD -0.23, 95% CI = -0.4 to -0.07), while symptom improvement in FD was observed in pooled SMD but not RR (SMD -0.62, 95% CI = -1.16 to -0.08; RR 1.01, 95% CI = 0.71-1.45).
CONCLUSION
Rebamipide is effective in organic dyspepsia and may improve symptoms in functional dyspepsia.
Topics: Alanine; Anti-Ulcer Agents; Dyspepsia; Humans; Odds Ratio; Quinolones; Treatment Outcome
PubMed: 29192375
DOI: 10.1007/s10620-017-4871-9 -
Expert Review of Gastroenterology &... Aug 2014Testing to define delayed gastric emptying is required to diagnose gastroparesis; rapid emptying is found in other patients. Commonly performed methods of gastric... (Review)
Review
Testing to define delayed gastric emptying is required to diagnose gastroparesis; rapid emptying is found in other patients. Commonly performed methods of gastric emptying testing include scintigraphy and breath testing. The SmartPill wireless motility capsule (WMC) system is US FDA-approved for evaluating suspected delayed emptying in gastroparesis and functional dyspepsia. The device measures transit in the stomach, small intestine, and colon by detecting characteristic pH transitions; and quantifies pressure waves in each gut region. WMC gastric emptying times correlate with scintigraphic measures. Incremental benefits of WMC testing in patients with suspected gastroparesis include delineation of pressure abnormalities and small intestinal and colonic transit delays. Acceptance of trial data confirming usefulness of WMC testing in suspected gastric motor disorders has been hampered by small sample sizes and design limitations. Ongoing multicenter studies will validate the utility of WMC methods in patients with suspected gastroparesis and other upper gastrointestinal motor disorders.
Topics: Animals; Dyspepsia; Equipment Design; Gastric Acidity Determination; Gastric Emptying; Gastroparesis; Humans; Hydrogen-Ion Concentration; Predictive Value of Tests; Pressure; Signal Processing, Computer-Assisted; Telemetry; Time Factors; Transducers, Pressure; Wireless Technology
PubMed: 24881810
DOI: 10.1586/17474124.2014.922869 -
The Keio Journal of Medicine Mar 2021In 2016, the Rome criteria were updated as Rome IV, and only minor changes were introduced for functional dyspepsia (FD). The major symptoms of FD now include not only... (Review)
Review
In 2016, the Rome criteria were updated as Rome IV, and only minor changes were introduced for functional dyspepsia (FD). The major symptoms of FD now include not only postprandial fullness, but also epigastric pain and burning, and early satiation at above the "bothersome" level. Investigations into the effect of meal ingestion on symptom generation have indicated that not only postprandial fullness and early satiety but also epigastric pain and burning sensation and nausea (not vomiting) may increase after meals. Helicobacter pylori infection is considered to be the cause of dyspepsia if successful eradication leads to sustained resolution of symptoms for more than 6 months, and such a condition has been termed H. pylori-associated dyspepsia. Prompt esophagogastroduodenoscopy and H. pylori "test and treat" may be beneficial, especially in regions with a high prevalence of gastric cancer, such as east Asia. In terms of treatment, acotiamide, tandospirone, and rikkunshito are newly listed in Rome IV as treatment options for FD. Clinical studies in the field of FD should be strictly based on the Rome IV criteria until the next Rome V is published in 2026.
Topics: Dyspepsia; Helicobacter Infections; Helicobacter pylori; Humans; Pancreatitis, Chronic
PubMed: 32612016
DOI: 10.2302/kjm.2020-0006-OA -
Expert Opinion on Emerging Drugs Jun 2015Functional dyspepsia (FD) is a relatively common gastrointestinal clinical condition that remains poorly understood. Controversies remain regarding the definition,... (Review)
Review
INTRODUCTION
Functional dyspepsia (FD) is a relatively common gastrointestinal clinical condition that remains poorly understood. Controversies remain regarding the definition, pathophysiology and optimum treatment. The current treatment of FD is limited and no established regimen is available.
AREAS COVERED
Recent advances have improved our understanding of the pathophysiology of the disease and have led to the development of newer tailored therapies. Novel agents such as the motilin receptor agonist camicinal and the muscarinic M1 and M2 receptor antagonist acotiamide appear promising; however, the need for a safe and efficacious treatment remains largely unmet. This review describes the currently available management options for FD and critically evaluates emerging therapies.
EXPERT OPINION
The optimal treatment for FD is yet to be determined. A proton pump inhibitor or a prokinetic agent constitutes primary treatment. Helicobacter pylori testing and eradication is recommended. Based on currently available data, acotiamide appears promising, particularly in postprandial distress syndrome. Further large-scale multicentered trials are required to define the duration of treatment and the side-effect profile.
Topics: Benzamides; Drug Design; Dyspepsia; Gastrointestinal Agents; Helicobacter Infections; Helicobacter pylori; Humans; Postprandial Period; Proton Pump Inhibitors; Thiazoles
PubMed: 25645940
DOI: 10.1517/14728214.2015.1009827 -
Digestive Diseases (Basel, Switzerland) 2017The correct diagnosis of functional gastrointestinal disorders (FGIDs) is quite a challenge. The overlaps between syndromes can complicate the interpretation of clinical... (Review)
Review
BACKGROUND
The correct diagnosis of functional gastrointestinal disorders (FGIDs) is quite a challenge. The overlaps between syndromes can complicate the interpretation of clinical data.
SUMMARY
The incidence of functional digestive disorders and irritable bowel syndrome are still underestimated with the currently applied diagnostic tools, and the management of the seemingly elusive disease is not satisfactory. For this reason, the "Rome" criteria were created to provide a better understanding and classification of FGIDs. Key Messages: Rome diagnostic criteria and recommendations should be used in the design and performance of clinical studies in the field of functional dyspepsia and irritable bowel syndrome.
Topics: Diagnosis, Differential; Dyspepsia; Humans; Incidence; Irritable Bowel Syndrome
PubMed: 29421792
DOI: 10.1159/000485408 -
Journal of Pediatric Gastroenterology... Dec 2016As defined by Rome III, there are 4 abdominal pain-related functional gastrointestinal disorders in children: irritable bowel syndrome, functional dyspepsia (FD),... (Review)
Review
As defined by Rome III, there are 4 abdominal pain-related functional gastrointestinal disorders in children: irritable bowel syndrome, functional dyspepsia (FD), abdominal migraine, and functional abdominal pain. Dyspepsia is a constellation of symptoms referable to the gastroduodenal region of the upper gastrointestinal tract. FD refers to dyspeptic symptoms that cannot currently be explained by an organic cause, and affects 25% to 40% of the adult population over a lifetime. In children, this condition results in increased specialist consultations, with reported prevalence between 3% and 27%. The Rome III criteria for pediatric FD include the presence or persistence of recurrent pain or discomfort centered in the upper abdomen, without evidence of organic disease or change in frequency of stools. Symptoms must be chronic, occurring at least weekly and over a period of at least 6 months. The goal of this article is to provide a narrative review of diagnosis and management of the FD in the pediatric population. A comprehensive search of published literature using the PubMed (http://www.ncbi.nlm.nih.gov/pubmed/) database was carried out to identify all articles published in English from 1998 to November 2015, using 3 key terms; "FD," "functional gastrointestinal disorders," and "children."
Topics: Abdominal Pain; Child; Diagnosis, Differential; Dyspepsia; Gastroesophageal Reflux; Humans; Irritable Bowel Syndrome; Stress, Psychological
PubMed: 27437927
DOI: 10.1097/MPG.0000000000001344 -
Current Opinion in Gastroenterology Nov 2020This review assesses the relationship between gastroparesis and functional dyspepsia, in light of recent research assessing cause, pathophysiology and treatment. (Review)
Review
PURPOSE OF REVIEW
This review assesses the relationship between gastroparesis and functional dyspepsia, in light of recent research assessing cause, pathophysiology and treatment.
RECENT FINDINGS
The Gastroparesis Cardinal Symptom Index (GCSI) lacks the ability to readily distinguish functional dyspepsia from gastroparesis based on symptoms. Although prior studies found that the extent of delay in gastric emptying did not accurately predict severity of symptoms, when optimally measured, delayed gastric emptying may in fact correlate with gastroparesis symptoms. Enteric dysmotility may be an important risk factor for gastroparesis. Altered central processing may play a role in symptom generation for both gastroparesis and functional dyspepsia based on functional brain MRI. Treatment directed towards reducing low-grade inflammation and improving mucosal barrier function in the duodenum may represent a novel therapeutic target for functional dyspepsia, whereas gastric peroral endoscopy myotomy (G-POEM) remains a promising intervention for refractory gastroparesis.
SUMMARY
Abnormalities on functional MRI of the brain have been identified in patients with functional dyspepsia and gastroparesis. Small bowel dysmotility and duodenal barrier dysfunction have been implicated in the pathophysiology of gastroparesis and functional dyspepsia, respectively. New treatments for functional dyspepsia may target low-grade duodenal inflammation and barrier dysfunction. The pylorus remains a target in gastroparesis.
Topics: Dyspepsia; Esophageal Achalasia; Esophageal Sphincter, Lower; Gastric Emptying; Gastroparesis; Humans; Pylorus
PubMed: 32868504
DOI: 10.1097/MOG.0000000000000677