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The Dietary Management of Patients with Irritable Bowel Syndrome: A Narrative Review of the Existing and Emerging Evidence.
Algera, J, Colomier, E, Simrén, M
Nutrients. 2019;(9)
Abstract
Even though irritable bowel syndrome (IBS) has been known for more than 150 years, it still remains one of the research challenges of the 21st century. According to the current diagnostic Rome IV criteria, IBS is characterized by abdominal pain associated with defecation and/or a change in bowel habit, in the absence of detectable organic causes. Symptoms interfere with the daily life of patients, reduce health-related quality of life and lower the work productivity. Despite the high prevalence of approximately 10%, its pathophysiology is only partly understood and seems multifactorial. However, many patients report symptoms to be meal-related and certain ingested foods may generate an exaggerated gastrointestinal response. Patients tend to avoid and even exclude certain food products to relieve their symptoms, which could affect nutritional quality. We performed a narrative paper review of the existing and emerging evidence regarding dietary management of IBS patients, with the aim to enhance our understanding of how to move towards an individualized dietary approach for IBS patients in the near future.
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2.
Therapeutic Potential of Zataria multiflora Boiss in Treatment of Irritable Bowel Syndrome (IBS).
Mahboubi, M
Journal of dietary supplements. 2019;(1):119-128
Abstract
Irritable Bowel syndrome (IBS), the most common chronic functional gastrointestinal disorder, is categorized as IBS-C and IBS-D, which are equivalent to Ghoolenj Rihi and Maghs Rihi in Iranian traditional medicine. One of the main applications of Zataria multiflora Boiss in traditional medicine is its efficacy in the gastrointestinal tract with symptoms such as IBS. The aim of this study was to evaluate the efficacy of Zataria multiflora essential oil in management of IBS. We used all the accessible references (electronic and published books, theses, and reports) to write this article. The results of our investigation show that the majority of gas chromatography-mass spectrometry (GC-MS) analyses exhibited carvacrol and thymol as the main components of Zataria multiflora essential oil, and 60 drops oral daily dose of Z. multiflora essential oil (2%) can relieve the symptoms of IBS without any adverse effects. The pharmacological studies confirmed the analgesic, anti-inflammatory, antispasm and antiulcer effects of Z. multiflora essential oils and main components. According to the results of studies, oral Z. multiflora essential oil (2%) is a good candidate for management of IBS, but more studies are required to better understand its efficacies.
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3.
Cannabis and Turmeric as Complementary Treatments for IBD and Other Digestive Diseases.
Quezada, SM, Cross, RK
Current gastroenterology reports. 2019;(2):2
Abstract
PURPOSE OF REVIEW Complementary therapies for inflammatory bowel disease (IBD) have earned growing interest from patients and investigators alike, with a dynamic landscape of research in this area. In this article, we review results of the most recent studies evaluating the role of cannabis and turmeric for the treatment of IBD and other intestinal illnesses. RECENT FINDINGS Cannabinoids are well-established modulators of gut motility and visceral pain and have demonstrated anti-inflammatory properties. Clinical trials suggest that there may be a therapeutic role for cannabinoid therapy in the treatment of IBD, irritable bowel syndrome (IBS), nausea and vomiting, and GI motility disorders. Recent reports of serious adverse effects from synthetic cannabinoids highlight the need for additional investigation of cannabinoids to establish their efficacy and safety. Turmeric trials have demonstrated some promise as adjuvant treatment for IBD, though not in other GI disease processes. Evidence suggests that the use of cannabis and turmeric is potentially beneficial in IBD and IBS; however, neither has been compared to standard therapy in IBD, and thus should not be recommended as alternative treatment for IBD. For cannabis in particular, additional investigation regarding appropriate dosing and timing, given known adverse effects of its chronic use, and careful monitoring of potential bleeding complications with synthetic cannabinoids are imperative.
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All that a physician should know about FODMAPs.
Mehtab, W, Agarwal, A, Singh, N, Malhotra, A, Makharia, GK
Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology. 2019;(5):378-390
Abstract
A diet low in poorly absorbed, fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAPs) is now considered as an effective strategy for symptoms control in patients with irritable bowel syndrome (IBS). The low FODMAP diet is administered in three phases, namely restriction of all dietary FODMAPs followed by rechallenge and then reintroduction of specific FODMAPs according to the tolerance of patients. A dietician should be involved in patients in whom a low FODMAP diet is planned. While restricting high FODMAPs, it is pertinent that patients are advised a well-balanced diet and suitable alternatives with low FODMAP contents in each food groups are prescribed. Strict adherence to a low FODMAP diet has been shown to improve symptoms, stool output, quality of life, and the overall well-being of patients with IBS. For those who do not respond to this dietary approach, a normal diet may be initiated and other treatment strategies (dietary or nondietary) should be considered. Interestingly, the low FODMAP diet has also been tried in other functional disorders, nonceliac gluten sensitivity, and even inflammatory bowel disease. Since the concept of FODMAP is relatively new, there is only limited data on the content of FODMAP in the Indian food items and there is a need to address this question. There is also a need for well-designed and adequately powered studies to explore the efficacy of low FODMAP diet in patients with IBS. In the present review article, we have compiled all the relevant information about FODMAPs with an objective to provide comprehensive information on FODMAPs to a physician.
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5.
Tenapanor: First Approval.
Markham, A
Drugs. 2019;(17):1897-1903
Abstract
The selective sodium hydrogen exchanger 3 (NHE3) inhibitor tenapanor is being developed by Ardelyx Inc. for the treatment of constipation-predominant irritable bowel syndrome (IBS-C) [under the tradename IBSRELA®] and for hyperphosphataemia in patients with chronic kidney disease (CKD) on dialysis or with end stage renal disease (ESRD). Based on positive results from the phase III T3MPO trial program, tenapanor was recently approved in the USA for the treatment of IBS-C in adults. This article summarises the milestones in the development of tenapanor leading to this first approval.
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6.
Is SIBO A Real Condition?
Ruscio, M
Alternative therapies in health and medicine. 2019;(5):30-38
Abstract
CONTEXT Small intestinal bacterial overgrowth (SIBO) has gained popularity on the internet in addition to certain clinical and research circles. This interest has expanded awareness of important new dietary, nutraceutical, and pharmaceutical treatments in addition to laboratory evaluation assessment options. Concomitantly, there appears a loss of parsimony regarding how to use these tools resulting in an untenable degree of testing and treatment for this condition. OBJECTIVES A balanced review of the data regarding SIBO testing, treatment, and management with the goal of establishing non-biased best practices. DESIGN Non-systematic review. RESULTS The results for the review fall into two categories. Ineffective Action: Treat only SIBO labs; Treat for SIBO if no symptoms are exhibited; Recommending eating or avoiding foods because they might be good or bad for SIBO; Recommending treatments that are non-validated. Effective Action: Use SIBO breath results, in addition to history and current symptoms, to determine the best treatment; Find foods that work for patients based on dietary elimination and reintroduction; Apply validated treatment for SIBO and IBS in a logical 'step-up' like treatment approach. CONCLUSIONS Testing and treating for SIBO can offer patients clinically significant relief. However, these tests and treatments must be applied with circumspection to prevent over-testing, over-treatment, squandering resources, or creating a fear around certain foods.
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7.
Pseudo-obstruction, enteric dysmotility and irritable bowel syndrome.
Lindberg, G
Best practice & research. Clinical gastroenterology. 2019;:101635
Abstract
New diagnostic techniques have advanced our knowledge about the irritable bowel syndrome. The majority of patients that we believed to have a psychosomatic disorder have received other diagnoses explaining their symptoms. Endoscopy makes it possible to diagnose celiac disease before it leads to malnutrition and allows the detection of microscopic colitis as a cause of watery diarrhea. At the severe end of the symptom spectrum enteric dysmotility marks the border at which IBS ceases to be a functional disorder and becomes a genuine motility disorder. Joint hypermobility or Ehlers-Danlos syndrome is present in a substantial proportion of patients with enteric dysmotility. Chronic intestinal pseudo-obstruction is the end-stage of a large number of very rare disorders in which failed peristalsis is the common denominator. Nutritional needs and symptom control are essential in the management of pseudo-obstruction. Home parenteral nutrition is life saving in more than half of patients with chronic intestinal pseudo-obstruction.
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8.
Effectiveness of vitamin D for irritable bowel syndrome: A protocol for a systematic review of randomized controlled trial.
Shi, SM, Wen, YL, Hou, HB, Liu, HX
Medicine. 2019;(9):e14723
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Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a prevalent and debilitating condition for patients who experience this disorder. Clinical researches indicate that vitamin D (VD) can help relief the symptoms of IBS. However, no systematic review has addressed this issue yet. Thus, this systematic review aims to investigate the effectiveness and safety of VD for patients with IBS. METHODS We will retrieve the following databases for randomized controlled trials to assess the effectiveness and safety of VD for patients with IBS: Cochrane Library, EMBASE, MEDICINE, Web of Science, Allied and Complementary Medicine Database, Chinese Biomedical Literature Database, and China National Knowledge Infrastructure. Each database will be retrieved from its inception to January 31, 2019. Two researchers will independently selection studies, extract data and assess methodological quality. RevMan 5.3 software will be used to pool the data, and carry out the meta-analysis if it is possible. RESULTS This systematic review will evaluate the effectiveness and safety of VD for patients with IBS. The primary outcomes include stool frequency and abdominal pain. The secondary outcomes consist of stool status, quality of life, and adverse effects. CONCLUSIONS The findings of this systematic review may provide the existing evidence on the effectiveness and safety of VD for patients with IBS. ETHICS AND DISSEMINATION This systematic review will not require ethical approval, because all data will be extracted from the published literature. The findings of this study will be disseminated at peer-reviewed journals.PROSPERO registration number: PROSPERO CRD42019122641.
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Excluding inflammatory bowel disease in the irritable bowel syndrome patient: how far to go?
Nemakayala, DR, Cash, BD
Current opinion in gastroenterology. 2019;(1):58-62
Abstract
PURPOSE OF REVIEW Irritable bowel syndrome (IBS) is among the most commonly encountered conditions in primary care and gastroenterology. There is ample evidence that an IBS diagnosis based on symptom-based criteria and exclusion of alarm features that would otherwise support diagnostic testing is accurate and durable. For many clinicians, however, IBS remains a diagnosis of exclusion because of concern surrounding missed diagnoses of inflammatory bowel disease (IBD) or other organic gastrointestinal diseases. Using blood and/or fecal biomarker tests to shift the precolonoscopy probability of IBD in patients with symptoms mimicking IBS is becoming an increasingly reasonable practice with improvement in 'preliminary' tests. RECENT FINDINGS Fecal calprotectin (FCP) testing appears to be the most sensitive preliminary test for discriminating IBD from IBS. Although both fecal lactoferrin and FCP were superior to serum C-reactive peptide (CRP) in their diagnostic accuracy, FCP is superior to fecal lactoferrin based on available literature. SUMMARY In patients with IBS with diarrhea who have not undergone previous extensive evaluation, the ability of screening tests to detect colonic inflammation is improving. FCP and fecal lactoferrin are reliable predictors of colonic inflammation and should be considered for standard testing in patients with IBS-D symptoms to help identify those who would benefit most from colonoscopy. Although predictive, there currently are no fecal or serum tests that can definitively identify or subtype IBD.
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10.
The Role of Dietary Approach in Irritable Bowel Syndrome.
Portincasa, P, Lembo, A, de Bari, O, Di Palo, DM, Maggio, A, Cataldo, I, Calamita, G
Current medicinal chemistry. 2019;(19):3512-3520
Abstract
Irritable bowel syndrome (IBS) is a chronic functional disorder of the gastrointestinal tract and is one of the most frequent gastrointestinal diseases. In IBS multiple pathophysiological mechanisms including alterations in intestinal motility, permeability, nutrient absorption, and intestinal microbiota have been implicated. Foods are commonly reported by patients to be a trigger of symptoms and therefore are likely involved in the generation of symptoms in IBS. Among all possible therapeutic options, a first-line approach to IBS is dietary education and identification of foods potentially responsible for the onset or worsening of symptoms. Dietary approaches include reduction of gas-producing foods (i.e. fermentable oligo-, di-, and monosaccharides and polyols (FODMAPs)), lactose and gluten. Further studies are required to link the ultimate role of diets in different IBS subtypes.