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381 papers 100 to 500 followers Allergy, immune, and GI related conditions
Hugh A Sampson
Hippocrates is often credited with first recognizing that food could be responsible for adverse symptoms and even death in some individuals, but it was not until the seminal observations by Prausnitz that the investigation of food allergy was viewed on a more scientific basis. In the first half of the 20th century, there were periodic reports in the medical literature describing various food allergic reactions. In the mid- to late- 1970's, the studies of Charles May and colleagues began to penetrate the medical world's skepticism about the relevance of food allergy and how to diagnose it, since standard skin testing was known to correlate poorly with clinical symptoms...
October 2016: Allergology International: Official Journal of the Japanese Society of Allergology
Niti Y Chokshi, Scott H Sicherer
Food allergies are increasing in prevalence, and with it, IgE testing to foods is becoming more commonplace. Food-specific IgE tests, including serum assays and prick skin tests, are sensitive for detecting the presence of food-specific IgE (sensitization), but specificity for predicting clinical allergy is limited. Therefore, positive tests are generally not, in isolation, diagnostic of clinical disease. However, rationale test selection and interpretation, based on clinical history and understanding of food allergy epidemiology and pathophysiology, makes these tests invaluable...
2016: Expert Review of Clinical Immunology
Alessandro Fiocchi, Valentina Pecora, Lamia Dahdah
PURPOSE OF REVIEW: there are accruing evidences on the role of the intestinal microbiota in the development of allergic diseases among infants. Elaborating on this theoretical basis, studies did assess the possibilities to prevent allergic diseases in infancy through manipulation of the intestinal microbiota. We review here such studies. RECENT FINDINGS: interventional studies led to conflicting conclusions on the possible role of probiotics and prebiotics in allergy prevention...
July 2016: Journal of Pediatric Gastroenterology and Nutrition
Santiago Quirce, Teresa Boyano-Martínez, Araceli Díaz-Perales
IgE-mediated allergy to wheat proteins can be caused by exposure through ingestion, inhalation, or skin/mucosal contact, and can affect various populations and age groups. Respiratory allergy to wheat proteins is commonly observed in adult patients occupationally exposed to flour, whereas wheat food allergy is more common in children. Wheat allergy is of growing importance for patients with recurrent anaphylaxis, especially when exercise related. The diagnosis of wheat allergy relies on a consistent clinical history, skin prick testing with well-characterized extracts and specific IgE tests...
2016: Expert Review of Clinical Immunology
Carla Mastrorilli, Carlo Caffarelli, Karin Hoffmann-Sommergruber
The rising burden of allergic diseases in childhood requires a compelling need to identify individuals at risk for atopy very early in life or even predict the onset of food allergy and atopic dermatitis since pregnancy. The development and clinical phenotypes of atopic diseases in childhood depend on a complex interaction between genetic and environmental factors, such as allergen exposure, air pollution, and infections. Preventive strategies may include avoidance measures, diet supplements, and early complementary food introduction...
December 2017: Pediatric Allergy and Immunology
Scott H Sicherer, Hugh A Sampson
This review provides general information to serve as a primer for those embarking on understanding food allergy and also details advances and updates in epidemiology, pathogenesis, diagnosis, and treatment that have occurred over the 4 years since our last comprehensive review. Although firm prevalence data are lacking, there is a strong impression that food allergy has increased, and rates as high as approximately 10% have been documented. Genetic, epigenetic, and environmental risk factors are being elucidated increasingly, creating potential for improved prevention and treatment strategies targeted to those at risk...
January 2018: Journal of Allergy and Clinical Immunology
Mary Grace Baker, Sarah Saf, Angela Tsuang, Anna Nowak-Wegrzyn
No abstract text is available yet for this article.
September 2018: Annals of Allergy, Asthma & Immunology
Susan Waserman, Philippe Bégin, Wade Watson
Food allergy is defined as an adverse immunologic response to a food protein. Food-related reactions are associated with a broad range of signs and symptoms that may involve any body system, including the skin, gastrointestinal and respiratory tracts, and cardiovascular system. Immunoglobulin E (IgE)-mediated food allergy is a leading cause of anaphylaxis and, therefore, referral to an allergist for timely and appropriate diagnosis and treatment is imperative. Diagnosis entails a careful history and diagnostic tests, such as skin prick tests, serum-specific IgE and, if indicated, an oral food challenge...
2018: Allergy, Asthma, and Clinical Immunology
K Simonyté Sjödin, M-L Hammarström, P Rydén, A Sjödin, O Hernell, L Engstrand, C E West
BACKGROUND: Compositional changes in the early-life gut microbiota have been implicated in IgE-associated allergic diseases, but there is lack of longitudinal studies. We examined gut microbiota development from infancy to school age in relation to onset of IgE-associated allergic diseases. At 8 years of age, we also examined the relationship between gut microbiota and T-cell regulation, estimated as responses to polyclonal T-cell activation. METHODS: Stool samples were collected from 93 children at 4, 6, 13 months, and 8 years of age...
May 22, 2018: Allergy
C E Rosenberg, M K Mingler, J M Caldwell, M H Collins, P C Fulkerson, D W Morris, V A Mukkada, P E Putnam, T Shoda, T Wen, M E Rothenberg
BACKGROUND: Recent data associate eosinophilic esophagitis (EoE) with IgG4 rather than IgE, but its significance and function have not been determined. Our aims were to measure esophageal IgG4 levels and to determine functional correlations as assessed by histologic and transcriptome analyses. METHODS: This case-control study included pediatric subjects with EoE (≥15 eosinophils/HPF) and non-EoE controls. Protein lysates were analyzed for IgA, IgM, and IgG1-IgG4 using the Luminex 100 system; IgE was quantified by ELISA...
September 2018: Allergy
K Martens, B Pugin, I De Boeck, I Spacova, B Steelant, S F Seys, S Lebeer, P W Hellings
Probiotics are live microorganisms that, when administered in adequate amounts, confer health benefit on the host. The therapeutic effects of probiotics have been mostly studied in the gastrointestinal tract, but recent evidence points toward the potential of these bacteria to prevent and/or treat chronic airway diseases. In this review, possible mechanisms of action of probiotics in the airways are described, with a particular focus on their capacity to modulate the epithelial barrier function and their mode of interaction with the immune system...
October 2018: Allergy
Paul J Dowling, Hannah Neuhaus, Brooke I Polk
Eosinophilic esophagitis (EoE) is a chronic, immune-mediated inflammatory disease with incompletely understood pathogenesis. Though disease manifestations were initially ascribed to a delayed reaction to food allergens, emerging evidence suggests that modifiable host factors and environmental allergen exposure may also play critical roles in the pathogenesis and ongoing manifestations of EoE. As with other atopic diseases, lack of early-life exposure to microbial pathogens leads to an immune tolerance defect and reprograms the commensal gut microflora toward a type 2 T helper (Th2) phenotype; the esophageal microbiota, a rich environment consisting of diverse bacterial species, is greatly altered by inflammation...
July 21, 2018: Clinical Reviews in Allergy & Immunology
John K DiBaise, Lucinda A Harris, Brent Goodman
Postural tachycardia syndrome (POTS) is one of the most common causes of orthostatic intolerance and is being increasingly recognized in clinical practice. Gastrointestinal (GI) symptoms are reported commonly in patients with POTS and pose a considerable management challenge, making it imperative that gastroenterologists be aware of this condition and its GI comorbidities. Although the evidence presented herein does not prove causation, it does support an association between GI symptoms, GI dysmotility, and POTS...
October 2018: American Journal of Gastroenterology
Rosan Meyer
The elimination of food allergens that contribute essential nutrients in paediatrics may lead to the development of nutritional disorders. The most common nutritional disorders include poor growth, micronutrient deficiencies and feeding difficulties. Of the aforementioned, growth faltering has been well studied and is seen as a common presenting factor in paediatric food allergy. However, the use of different criteria and cut-off values makes it difficult to establish the overall effect. The impact of number and type of foods eliminated and comorbidities has yielded varying results, although there seems to be a trend towards worsening growth with atopic dermatitis and the avoidance of cow's milk...
November 2018: Pediatric Allergy and Immunology
Evan S Dellon, Chris A Liacouras, Javier Molina-Infante, Glenn T Furuta, Jonathan M Spergel, Noam Zevit, Stuart J Spechler, Stephen E Attwood, Alex Straumann, Seema S Aceves, Jeffrey A Alexander, Dan Atkins, Nicoleta C Arva, Carine Blanchard, Peter A Bonis, Wendy M Book, Kelley E Capocelli, Mirna Chehade, Edaire Cheng, Margaret H Collins, Carla M Davis, Jorge A Dias, Carlo Di Lorenzo, Ranjan Dohil, Christophe Dupont, Gary W Falk, Cristina T Ferreira, Adam Fox, Nirmala P Gonsalves, Sandeep K Gupta, David A Katzka, Yoshikazu Kinoshita, Calies Menard-Katcher, Ellyn Kodroff, David C Metz, Stephan Miehlke, Amanda B Muir, Vincent A Mukkada, Simon Murch, Samuel Nurko, Yoshikazu Ohtsuka, Rok Orel, Alexandra Papadopoulou, Kathryn A Peterson, Hamish Philpott, Philip E Putnam, Joel E Richter, Rachel Rosen, Marc E Rothenberg, Alain Schoepfer, Melissa M Scott, Neil Shah, Javed Sheikh, Rhonda F Souza, Mary J Strobel, Nicholas J Talley, Michael F Vaezi, Yvan Vandenplas, Mario C Vieira, Marjorie M Walker, Joshua B Wechsler, Barry K Wershil, Ting Wen, Guang-Yu Yang, Ikuo Hirano, Albert J Bredenoord
BACKGROUND & AIMS: Over the last decade, clinical experiences and research studies raised concerns regarding use of proton pump inhibitors (PPIs) as part of the diagnostic strategy for eosinophilic esophagitis (EoE). We aimed to clarify the use of PPIs in the evaluation and treatment of children and adults with suspected EoE to develop updated international consensus criteria for EoE diagnosis. METHODS: A consensus conference was convened to address the issue of PPI use for esophageal eosinophilia using a process consistent with standards described in the Appraisal of Guidelines for Research and Evaluation II...
October 2018: Gastroenterology
Mark Rochman, Nurit P Azouz, Marc E Rothenberg
Eosinophilic esophagitis (EoE) is a chronic, allergen-driven inflammatory disease of the esophagus characterized predominantly by eosinophilic inflammation, leading to esophageal dysfunction. Converging data have placed the esophageal epithelium at the center of disease pathogenesis. In particular, the main EoE disease susceptibility loci at 2p23 and 5p22 encode for gene products that are produced by the esophageal epithelium: the intracellular protease calpain 14 and thymic stromal lymphopoietin, respectively...
July 2018: Journal of Allergy and Clinical Immunology
Stacy B Menees, Corey Powell, Jacob Kurlander, Akash Goel, William D Chey
OBJECTIVES: Irritable bowel syndrome (IBS) is viewed as a diagnosis of exclusion by most providers. The aim of our study was to perform a systematic review and meta-analysis to evaluate the utility of C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), fecal calprotectin, and fecal lactoferrin to distinguish between patients with IBS and inflammatory bowel disease (IBD) and healthy controls (HCs). METHODS: A systematic online database search was performed...
March 2015: American Journal of Gastroenterology
Joana Gomes-Belo, Farah Hannachi, Kate Swan, Alexandra F Santos
An accurate diagnosis of food allergy is extremely important to guide safe and yet not overly restrictive dietary management. The cornerstone of the diagnosis of food allergy is the clinical history; it allows appropriate selection of the allergens to be tested and interpretation of the results of allergy tests, namely skin prick test (SPT), specific IgE (sIgE) to allergen extracts and, more recently, specific IgE to allergen components and the basophil activation test (BAT). SPT and sIgE to allergen extracts are very sensitive methods to detect IgE sensitization to a specific food...
April 22, 2018: Current Pediatric Reviews
Jonathan Spergel, Seema S Aceves
Eosinophilic esophagitis (EoE) is a disorder of increasing prevalence worldwide, causing clinical symptoms of vomiting, failure to thrive, and dysphagia and complications of esophageal remodeling with strictures and food impactions. Molecular profiling demonstrates EoE to be an eosinophil-predominant disorder with a TH 2 cytokine profile reminiscent of other allergic diseases, such as asthma, allergic rhinitis, and atopic dermatitis. Environmental antigens in the form of foods and aeroallergens induce eosinophil, basophil, mast cell, and T-cell infiltration...
July 2018: Journal of Allergy and Clinical Immunology
Antonio Di Sabatino, Marco V Lenti, Gino R Corazza, Carmen Gianfrani
Autoimmune and allergic disorders are highly prevalent conditions in which an altered or abnormal immune response is mounted against self- or environmental antigens, respectively. Antigen-based immunotherapy is a therapeutic option aimed at restoring the specific immune tolerance toward pathogenic antigens while leaving the rest of the immune system unaffected. This strategy proved efficacy especially in allergic diseases, including asthma, allergic rhinitis, and food allergies, but still has shortcomings for the treatment of autoimmune diseases...
2018: Frontiers in Medicine
2018-07-17 22:36:49
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