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1. Urticaria

Author

Moshe Ben-Shoshan, Amin Kanani, Chrystyna Kalicinsky, and Wade Watson

Subjects
Urticaria, Acute urticaria, Chronic urticaria, Chronic spontaneous urticaria, Inducible urticaria, Immunologic diseases. Allergy, RC581-607
Abstract

Abstract Urticaria (hives) is a common disorder that may be associated with angioedema (swelling that occurs beneath the skin). It is generally classified as acute or chronic, and chronic urticaria is further classified as spontaneous or inducible Second-generation, non-sedating histamine type 1 (H1)-receptor antihistamines represent the mainstay of therapy for both acute and chronic urticaria. Second-line treatment for uncontrolled chronic urticaria includes omalizumab (a monoclonal anti-immunoglobulin E [IgE] antibody). In this article, we review the causes, diagnosis and management of urticaria (with or without angioedema).

Published
2024
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2. Effect of omalizumab on inflammatory markers in COVID-19: an exploratory analysis of the COVID-19 immunologic antiviral therapy with omalizumab (CIAO) trial

Author

Connor Prosty, Michelle Le, Yang Lu, Lauren Khoury, Maxime Cormier, Mathew P. Cheng, Robert Fowler, Srinivas Murthy, Jennifer LY Tsang, Duncan Lejtenyi, Moshe Ben-Shoshan, Elham Rahme, Shirin Golchi, Nandini Dendukuri, Todd C. Lee, and Elena Netchiporouk

Subjects
omalizumab, coronavirus, COVID-19, clinical trial, cytokine, Medicine (General), R5-920
Abstract

BackgroundThe CIAO trial recently demonstrated a probable clinical benefit of omalizumab in the treatment of severe COVID-19; however, the mechanism underlying this benefit remains unclear. Therefore, we sought to longitudinally assess the impact of omalizumab on serum cytokines in CIAO trial patients to determine its mechanism of action.MethodsBlood samples were collected on days 0, 2, 7, and 14 from patients recruited into the CIAO trial and who consented to this substudy. Blood samples were tested by a panel of 25 inflammatory cytokines, as well as for markers of mast cell activation. Levels of inflammatory biomarkers were compared over time between omalizumab- and placebo-treated patients by generalized linear mixed-effects model. Associations between biomarkers and clinical outcomes were investigated by mixed-effects logistic regression.ResultsNineteen patients were recruited into this substudy; 10 were assigned to placebo and 9 to omalizumab. Monokine induced by gamma interferon was significantly positively associated with severe COVID-19 (Odds Ratio [OR] = 1.06, 95%CI = 1.00–1.11, p = 0.043). Further, omalizumab significantly reduced interleukin-15 (Coefficient = −0.95, p = 0.048) and macrophage inflammatory protein-1 (Coefficient = −1.31, p = 0.010) levels. However, neither was significant in analyses adjusting for multiple hypothesis testing.ConclusionAlthough limited by a small sample size, these results suggest that omalizumab’s potential benefit in COVID-19 may be mediated independently of modulation of the measured serum biomarkers. Further studies are needed to investigate omalizumab’s mechanism of action in COVID-19.

Published
2024
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3. Dupilumab Reduces Urticaria Activity, Itch, and Hives in Patients with Chronic Spontaneous Urticaria Regardless of Baseline Serum Immunoglobulin E Levels

Author

Marcus Maurer, Thomas B. Casale, Sarbjit S. Saini, Moshe Ben-Shoshan, Elizabeth Laws, Jennifer Maloney, Deborah Bauer, Allen Radin, and Melanie Makhija

Subjects
Biomarker, Chronic spontaneous urticaria, CSU, Dupilumab, Immunoglobulin E, IgE, Dermatology, RL1-803
Abstract

Abstract Introduction In chronic spontaneous urticaria (CSU), interleukin (IL)-4 and IL-13 may promote mast cell activation directly via IL-4 receptor expression, or indirectly via upregulated immunoglobulin E (IgE) production. Dupilumab significantly improved CSU signs and symptoms in the phase 3, randomized, placebo-controlled LIBERTY-CSU CUPID Study A. This analysis explores the impact of dupilumab on CSU signs and symptoms and serum IgE levels in patients from LIBERTY-CSU CUPID Study A with serum total IgE above and below 100 IU/mL at baseline. Methods Patients with H1-antihistamine-refractory CSU received dupilumab (n = 70) or placebo (n = 68) for 24 weeks. Efficacy endpoints were change from baseline to weeks 12 and 24 in serum total IgE levels, Itch Severity Score over 7 days (ISS7), Urticaria Activity Score over 7 days (UAS7), and Hives Severity Score over 7 days (HSS7) in dupilumab- or placebo-treated patients with serum total IgE above and below 100 IU/mL at baseline. Results Dupilumab treatment significantly reduced median (interquartile range) IgE levels at week 12 [dupilumab: −31.9% (−41.9; −22.6); placebo: −6.3% (−21.3; 14.9)] and week 24 [dupilumab: −48.2% (−56.8; − 39.5); placebo: − 6.3% (−34.5; 14.8)]. Similar IgE reductions relative to baseline were observed in dupilumab-treated patients regardless of baseline IgE level. Dupilumab treatment improved ISS7, UAS7, and HSS7 over 12 and 24 weeks, regardless of baseline serum IgE level (interaction p ≥ 0.59 for all treatment by subgroup comparisons), with weak correlations (r

Published
2024
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4. An investigation of a novel milk allergy-friendly food supplement program

Author

Michael A. Golding, Manvir Bhamra, Zoe Harbottle, Moshe Ben-Shoshan, Jennifer D. Gerdts, Leslie E. Roos, Elissa M. Abrams, Sara J. Penner, Jo-Anne St-Vincent, and Jennifer L. P. Protudjer

Subjects
food hypersensitivity, cost of illness/food hypersensitivity, dairy allergy, intervention, quality of life, food security, Immunologic diseases. Allergy, RC581-607
Abstract

IntroductionCompared to households not managing food allergy, households managing food allergy are faced with greater direct and indirect costs. To address these cost burdens, we developed and piloted a milk allergy-friendly food supplement program for lower- and middle-income households managing a dairy allergy in a child age

Published
2024
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5. Parental perceptions of a novel subsidy program to address the financial burden of milk allergy: a qualitative study

Author

Manvir Bhamra, Zoe Harbottle, Michael A Golding, Moshe Ben-Shoshan, Leslie E Roos, Elissa M Abrams, Sara J Penner, Jo-Anne St-Vincent, and Jennifer LP Protudjer

Subjects
Costs, Food allergy, Intervention, Immunologic diseases. Allergy, RC581-607
Abstract

Abstract Background Approximately 6–7% of Canadian children have food allergy. These families face substantial burdens due to the additional costs incurred purchasing allergy-friendly products necessary for management compared to families without food allergies. In the year prior to the COVID-19 pandemic, these costs were equivalent to an average of $200 monthly compared to families without food allergy. As food prices continue to rise, rates of food insecurity also increase, disproportionately affecting households with food allergy who have limited choices at food banks. Methods Families living or working in Winnipeg, Canada with an annual net income of about $70,000 or less the year prior to recruitment and a child under the age of 6 years old with a physician diagnosed milk allergy were recruited between January and February 2022. Participating families received bi-weekly home deliveries for six months, from March to August 2022, of subsidy kits containing ~$50 worth of milk allergy-friendly products. Semi-structured interviews, completed ± 2 weeks from the final delivery, were audio-recorded, transcribed verbatim, and analyzed thematically. Results Eight interviews, averaging 32 min (range 22–54 min), were completed with mothers from all different families. On average, mothers were 29.88 ± 4.39 years old and children were 2.06 ± 1.32 years old. All children reported allergies in addition to milk. Based on the data from these interviews, we identified 3 themes: food allergy causes substantial burden for families, “I have to get his allergy-friendly food first before getting to my basic needs”, and perceived emotional and financial benefits of a milk allergy-friendly food subsidy program. Conclusions This study, along with previous research, suggests that there is a need for assistance for families managing milk allergies. It also provides important information to inform development of programs which can address these financial challenges. Our in-kind food subsidy was perceived as having a positive impact on food costs and stress associated with food allergy management, however, parents identified a need for more variety in the food packages. Future programs should strive to incorporate a greater variety of products to address this limitation.

Published
2023
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8. vACcine COnfidence amongst those living with alleRgy during the COVID pandemic (ACCORD): a scoping review protocol

Author

Michael A. Golding, Nicole Askin, Ayel Luis R. Batac, Kaitlyn A. Merrill, Elissa M. Abrams, Philippe Bégin, Moshe Ben-Shoshan, Erika Ladouceur, Leslie E. Roos, Vladan Protudjer, and Jennifer L. P. Protudjer

Subjects
Immunologic diseases. Allergy, RC581-607
Abstract

Abstract Background Reports of allergic reactions to the COVID-19 vaccines have been documented, which may also contribute to hesitancy. Despite the low likelihood that the COVID-19 vaccine will trigger an allergic reaction, we and others have reported that families with allergy remain vaccine hesitant due to concerns of COVID-19-vaccine-triggered anaphylaxis. Objective To present our scoping review protocol, that will inform a forthcoming living scoping review in which we will investigate the peer-reviewed and grey literature on COVID-19 vaccine hesitancy and allergic disease and/or allergic reactions following a COVID-19 vaccine. Methods Informed by Arksey and O’Malley framework for methodological review, we have developed a search strategy with content and methodological experts, and which has undergone Peer Review of Electronic Search Strategies review. A search of four scientific databases, as well as gray literature, will be performed without restriction to articles by type of COVID-19 vaccine, or country of study, and will include publications in the ten languages our team can handle. Bi-monthly search alerts based on the search strategy will be generated. Results The first search will result in a stand alone peer reviewed scoping review. Bi-monthly updates will be posted on a pre-print server. Depending on the volume of literature, these updates will be synthesized and submitted for peer-review at 6 and/or 12 months. Conclusion COVID-19 vaccine hesitancy amongst individuals with allergy persists, despite very low risk of serious adverse reactions. Our living scoping review, which includes multiple forms of knowledge translation, will be a rigorous way to address hesitancy.

Published
2022
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9. Vaccine confidence among those living with allergy during the COVID pandemic (ACCORD): A scoping review

Author

Ayel Luis R. Batac, Kaitlyn A. Merrill, BSc (Hons), Nicole Askin, MLIS, Michael A. Golding, MA, Elissa M. Abrams, MD, MPH, FRCPC, Philippe Bégin, MD, PhD, FRCPC, Moshe Ben-Shoshan, MD, MSc, Erika Ladouceur, Leslie E. Roos, PhD, Vladan Protudjer, RN, BN, MMed, and Jennifer L.P. Protudjer, PhD

Subjects
Allergy, anaphylaxis, COVID, hesitancy, serious adverse events, scoping review, Immunologic diseases. Allergy, RC581-607
Abstract

Background: Reports of allergic reactions to coronavirus disease 2019 (COVID-19) vaccines, coupled with an “infodemic” of misinformation, carry the potential to undermine confidence in the COVID-19 vaccines. However, no attempts have been made to comprehensively synthesize the literature on how allergic disease and fear of allergic reactions to the vaccines contribute to hesitancy. Objectives: Our aim was to review the academic and gray literature on COVID-19 vaccine hesitancy and allergic reactions. Methods: We searched 4 databases (CINAHL, PsycINFO, MEDLINE, and Embase) using a search strategy developed by content and methodologic experts. No restrictions were applied regarding COVID-19 vaccine type, country of study, or patient age. Eligible articles were restricted to 10 languages. Results: Of the 1385 unique records retrieved from our search, 60 articles (4.3%) were included. Allergic reactions to the COVID-19 vaccine were rare but slightly more common in individuals with a history of allergic disease. A fifth of the studies (13 of 60 [22%]) discussed vaccine hesitancy due to possibility of an allergic reaction. Additionally, the present review identified research on details of vaccine-related anaphylaxis (eg, a mean and median [excluding clinical trial data] of 12.4 and 5 cases per million doses, respectively) and allergic reactions (eg, a mean and median [excluding clinical trial data] of 489 and 528 cases per million doses, respectively). Conclusion: COVID-19 vaccine acceptance among individuals living with allergy and among those with no history of allergic disease may be affected by fear of an allergic reaction. Despite the low incidence of allergic reactions to the COVID-19 vaccine, fear of such reactions is one of the most commonly cited concerns reported in the literature.

Published
2023
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10. COVID vaccine evaluation of barriers and resources among families of children with diagnosed allergies

Author

Gregory D. Gooding, Jennifer L. Protudjer, Sofianne Gabrielli, Pasquale Mulé, Greg Shand, Xun Zhang, Christine McCusker, Francisco J. Noya, Maria Harvey, Mélodie Chalifour, Catherine Sicard, Elissa Abrams, Jacques-Alexandre Amiel, Thanh-Thao Ngo, Andre Bonnici, Noni MacDonald, and Moshe Ben-Shoshan

Subjects
allergy, children, family, COVID-19, vaccine hesitancy, knowledge translation, Immunologic diseases. Allergy, RC581-607
Abstract

BackgroundWe aimed to determine vaccine hesitancy and the main barriers associated with the 2019 novel coronavirus, SARS-CoV-2 (COVID-19) vaccination among families of children diagnosed with food/drug/environmental allergies.MethodsBetween May and June 2021, we approached 146 families seen at the outpatient allergy clinic at the Montreal Children's Hospital and a community allergy practice were invited to complete an anonymous online survey on COVID-19 and vaccination attitudes and behaviour. Uni and multivariable logistic regressions were compared to estimate factors associated with vaccine hesitancy.ResultsAmong all patients, 24.1% reported vaccine hesitancy. The large majority of parents (95.2%) believed that vaccines work. The most common barrier to vaccination was fear of adverse side effects (57.0%). One-third of participants (31.5%) reported that a history of food, venom and drug allergy was a contraindication for COVID-19 vaccination. Fifty-nine (60.8%) participants stated that the dissemination of additional information would increase their willingness to be vaccinated. Most (96.9%) parents reported that their children's vaccinations were up to date. Hesitant families were more likely to be parents of children aged 6–10 years, be of Asian descent, report that mRNA vaccines are riskier than traditional vaccines, and report that the vaccine should not be given if the child has a history of allergic reaction to vaccines.ConclusionVaccine hesitancy exists mainly among certain ethnic groups and families with young children. Allergies to food, venom and drug allergy are commonly perceived as contraindications for COVID-19 vaccination. Knowledge translation activities addressing parental concerns will help increase vaccination rates.

Published
2023
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12. Tools to improve the diagnosis and management of T-cell mediated adverse drug reactions

Author

Ana Maria Copaescu, Moshe Ben-Shoshan, and Jason A. Trubiano

Subjects
drug allergy, in vivo, ex vivo, diagnostic tools, delayed hypersensitivity reaction, drug reaction with eosinophilia and systemic symptoms (DRESS), Medicine (General), R5-920
Abstract

Delayed drug T-cell immune-mediated hypersensitivity reactions have a large clinical heterogeneity varying from mild maculopapular exanthema (MPE) to severe cutaneous adverse reactions (SCARs) such as acute generalized exanthematous pustulosis (AGEP), drug reaction with eosinophilia and systemic symptoms (DRESS) and severe skin necrosis and blistering as seen in Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). Given the knowledge gaps related to the immunopathogenesis of these conditions, the absence of validated diagnostic tools and the significant associated morbidity and mortality, patients with SCARs often have limited drug choices. We performed a comprehensive review aiming to evaluate in vivo diagnostic tools such as delayed intradermal skin and patch testing and ex vivo/in vitro research assays such as the lymphocyte transformation test (LTT) and the enzyme-linked ImmunoSpot (ELISpot) assay. We searched through PubMed using the terms “drug allergy,” “in vivo” and “ex vivo” for original papers in the last 10 years. A detailed meticulous approach adapted to the various clinical phenotypes is recommended for the diagnostic and management of delayed drug hypersensitivity reactions. This review highlights the current diagnostic tools for the delayed drug hypersensitivity phenotypes.

Published
2022
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13. Skin prick test in milk allergic patients undergoing oral immunotherapy: Does the milk form used for skin tests matter?

Author

Esraa Bukhari, Sofianne Gabrielli, Christine McCusker, Julia Upton, Eyal Grunebaum, Edmond S. Chan, Liane Beaudette, Alexandra Langlois, Bahar Torabi, Duncan Lejtenyi, Ann E. Clarke, Danbing Ke, Bruce David Mazer, and Moshe Ben-Shoshan

Subjects
milk, allergy, oral immunotherapy (OIT), Desensitization, skin prick test (SPT), diluted milk, Immunologic diseases. Allergy, RC581-607
Abstract

SPT is the most commonly used confirmatory test for an IgE-mediated milk allergy. However, food SPTs are not standardized. We aimed to assess the accuracy of SPTs with extract, diluted, and undiluted milk to detect desensitization in children with milk allergy undergoing OIT. Children with milk allergy undergoing OIT and controls were recruited from Montreal Children’s Hospital (MCH), British Columbia Children’s Hospital (BCCH) and The Hospital for Sick Children (SickKids). Participants in the active arm received a weekly increase in milk until 200 ml of pure milk was tolerated. SPT using milk extract (Omega), diluted 2% milk (1:10), and undiluted milk was done at the study entry and when 200 ml of pure milk was reached. Participants in the control arm had SPT at study entry and 12 months later before they entered the active arm. Among 53 children who reached 200 ml, the median age was 12 years and 54.7% were males. The mean decrease in wheal size at 200 ml from the baseline was 3.78 mm (95%CI, 2.55–5.01), 5.05 mm (95% CI, 3.68–6.41), and 5.05 mm (95% CI, 3.29–6.80) for milk extract, diluted and undiluted milk respectively. Among 32 controls, the median age was 10 years and 62.5% were males. There was no significant change in wheal diameter over a one-year period regardless of the skin test method. Response to extract behaved similarly to whole food (Diluted and undiluted) and thus can be used to follow sensitization in the context of a desensitization program.

Published
2022
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14. Demographic characteristics associated with food allergy in a Nationwide Canadian Study

Author

Ann E. Clarke, Susan J. Elliott, Yvan St. Pierre, Lianne Soller, Sebastien La Vieille, and Moshe Ben-Shoshan

Subjects
Food allergy, Race/ethnicity, Sociodemographic, Multivariate analysis, Epidemiology, Immunologic diseases. Allergy, RC581-607
Abstract

Abstract Introduction We conducted a nationwide Canadian telephone survey on food allergy prevalence between February 2016 and January 2017, targeting vulnerable populations (New, Indigenous, and lower-income Canadians). Objective To examine the independent effect of demographic characteristics on food allergy. Methods Canadian households with vulnerable populations were targeted using Canadian Census data and the household respondent reported whether each household member had a perceived (self-reported) or probable (self-report of a convincing history or physician diagnosis) food allergy. The association between perceived and probable food allergy and demographic characteristics was assessed through weighted multivariable random effects logistic regressions. Results Children, females, Canadian-born participants, adults with post-secondary education, and those residing in smaller households were more likely to report perceived or probable food allergy. Although immigrant parents self-reported less food allergy, Canadian-born children of Southeast/East Asian immigrant versus other immigrant or Canadian-born parents reported more food allergy. Conclusion We have demonstrated clear associations between demographic characteristics and food allergy, which may provide important clues to the environmental determinants of food allergy.

Published
2021
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15. Food Allergy Education and Management in Early Learning and Childcare Centres: A Scoping Review on Current Practices and Gaps

Author

Mae Jhelene L. Santos, Kaitlyn A. Merrill, Moshe Ben-Shoshan, Jennifer D. Gerdts, Don Giesbrecht, Elana Lavine, Susan Prentice, Julia Upton, and Jennifer L. P. Protudjer

Subjects
anaphylaxis, early learning and childcare centres, food allergy, scoping review, Pediatrics, RJ1-570
Abstract

Anaphylaxis has occurred in preschools/schools yet there are no consistent food allergy (FA) management practices in early learning and childcare centres (ELCC) across jurisdictions. Presently, there are no reviews that have synthesized FA-related knowledge and management practices within ELCC. We aimed to perform a scoping review of FA management in ELCC, and report on perceived gaps or barriers. A PRISMA-ScR-guided search was conducted for North American, European and Australian articles in English/French in the OVID-MedLine, Scopus, and PsycInfo databases. Two independent reviewers screened the titles/abstracts of 2010 articles and full-text screened 77 articles; 15 of which were specifically related to ELCC. If the two reviewers could not agree to the relevance of a given study, a third reviewer provided guidance. This third reviewer also screened French articles. Thematic and descriptive reports of the studies were presented. We reported solely on pre-Coronavirus Disease pandemic ELCC studies. We included ten articles in this review, which provide evidence that ELCC staff have variable baseline knowledge, comprehension, experience, and practices in place to manage FA. ELCC staff also have limited FA-related training and experience regarding administration of epinephrine auto-injectors (EAI). Emergency Anaphylaxis Plans (EAP) were described in four studies. One study reported the parental influence on the site’s food purchasing and FA management. Three studies provided educational interventions, which demonstrated increased and sustained FA-related knowledge and confidence post-intervention. Participants deemed the training beneficial and desired annual training and more FA resources to be available. Across jurisdictions, ELCC staff have provided care and administered EAI in emergencies, but training remained variable. Communication and care planning amongst ELCC staff, and parents, is crucial. Annual education, available EAI and EAPs are tools necessary for effectively managing emergencies.

Published
2023
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16. In silico Identification of Immune Cell-Types and Pathways Involved in Chronic Spontaneous Urticaria

Author

Connor Prosty, Sofianne Gabrielli, Moshe Ben-Shoshan, Michelle Le, Ana M. Giménez-Arnau, Ivan V. Litvinov, Philippe Lefrançois, and Elena Netchiporouk

Subjects
chronic spontaneous urticaria, chronic urticaria, autoimmunity, autoallergy, chronic idiopathic urticaria, pathogenesis, Medicine (General), R5-920
Abstract

BackgroundThe immunopathogenesis of chronic spontaneous urticaria (CSU) is poorly understood, but recent research suggests that patients can be divided into autoallergic and autoimmune subtypes. Given that not all patients can be controlled with current treatment regimens, including anti-IgE monoclonal antibodies, a better understanding of the immune pathways involved in CSU may enable the repurposing of monoclonal antibodies used for other dermatologic diseases (e.g., Th2 and Th17 inhibitors). Therefore, we investigated the implicated immune cells and pathways by reanalyzing publicly available transcriptomic data.MethodsMicroarray data of CSU and healthy control (HC) skin and blood were obtained from the Gene Expression Omnibus (GSE72542, GSE57178). Differentially expressed genes were defined as a false discovery rate

Published
2022
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17. Changes in food-related costs during the COVID-19 pandemic among families managing food allergy

Author

Michael A. Golding, Cathérine Lemoine-Courcelles, Elissa M. Abrams, Moshe Ben-Shoshan, Philippe Bégin, Edmond S. Chan, Derek K. Chu, Jennifer D. Gerdts, Beatrice Povolo, Harold Kim, Elinor Simons, Julia Upton, and Jennifer L. P. Protudjer

Subjects
food allergy, cost of illness, COVID-19, food-related costs, socio-economic status pandemic-related changes in allergy-friendly food purchasing 2, Immunologic diseases. Allergy, RC581-607
Abstract

BackgroundThe COVID-19 pandemic has affected the supply, cost, and demand for certain foods, but it is not clear how these changes have affected food-allergic households.ObjectiveTo describe the changes in food-related costs that have followed COVID-19, as reported by higher- and lower-income households with a food-allergic member.MethodsBetween May 1-June 30, 2020, Canadian households, with at least one food-allergic member, completed an online survey on food shopping and preparation habits before and during the COVID-19 pandemic. The sample was divided into binary groups, either higher or lower than the sample median income. Data were analyzed using descriptive statistics and multiple regression.ResultsThe sample was comprised of 102 participants (i.e., 51/ income group). The three most common food allergies amongst both groups were peanuts, tree nuts and milk. Since the start of the pandemic, both groups reported greater monthly direct grocery costs, although costs amongst the higher-income group were twice as high as the lower-income group ($212.86 vs. $98.89, respectively). Indirect food preparation costs were similarly elevated. Higher-income households with food procurement difficulties reported increased indirect shopping costs following the outbreak of COVID-19, whereas those without such difficulties reported decreased costs. Lower-income households with allergies to milk, wheat, or eggs (i.e., staple allergy) experienced a larger change in indirect food preparation costs following the outbreak of COVID-19 relative to those with other food allergies ($244.58 vs. –$20.28, respectively; p = 0.03).ConclusionBoth higher and lower income households with food allergy reported greater direct food costs and indirect food preparation costs following the COVID-19. Households with staple allergy and those with difficulties finding their typical food items were particularly affected.

Published
2022
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18. Practical guide for evaluation and management of beta-lactam allergy: position statement from the Canadian Society of Allergy and Clinical Immunology

Author

Samira Jeimy, Moshe Ben-Shoshan, Elissa M. Abrams, Anne K. Ellis, Lori Connors, and Tiffany Wong

Subjects
Beta-lactam allergy, Antibiotic stewardship, Adverse drug reaction, Delabeling, Immunologic diseases. Allergy, RC581-607
Abstract

Abstract The vast majority of individuals labelled as allergic are not deemed truly allergic upon appropriate assessment by an allergist. A label of beta-lactam allergy carries important risks for individual and public health. This article provides an overview of beta-lactam allergy, implications of erroneous beta-lactam allergy labels and the impact that can be provided by structured allergy assessment. We provide recommendations on how to stratify risk of beta-lactam allergy, beta lactam challenge protocols as well as management of patients at high risk of beta-lactam allergy.

Published
2020
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19. Successful Desensitization to mRNA COVID-19 Vaccine in a Case Series of Patients With a History of Anaphylaxis to the First Vaccine Dose

Author

Faisal AlMuhizi, Shaonie Ton-Leclerc, Michael Fein, Christos Tsoukas, Lene Heise Garvey, Derek Lee, Moshe Ben-Shoshan, Ghislaine A. C. Isabwe, and Ana M. Copaescu

Subjects
vaccine, COVID-19, allergy, desensitization, challenge, polyethylene glycol, Immunologic diseases. Allergy, RC581-607
Abstract

BackgroundCoronavirus disease 2109 (COVID-19) vaccines have recently been approved to curb the global pandemic. The risk of allergic reactions to the vaccine polyethylene glycol (PEG) component has raised significant public concern. Desensitization is suggested in cases of vaccine related hypersensitivity reactions. After comprehensive literature review on the topic, our aim was to establish a safe and effective desensitization protocol for patients with suspected or confirmed immediate type hypersensitivity reactions to the COVID-19 vaccine.MethodsParticipants were referred to the McGill University Health Center (MUHC) Allergy-Immunology department for clinical evaluation following a reported reaction to their first dose of Moderna® mRNA-1273 or Pfizer-BioNTech® BNT162b2 vaccines. They underwent skin prick testing (SPT) with higher and lower molecular weight (MW) PEG and polysorbate 80, as per published protocols. Their second dose was administered following a desensitization protocol consisting of multiple dose-administration steps followed by a 60-min observation period.ResultsAmong a cohort of 142 patients with an increased risk for allergic reactions to the COVID-19 vaccines, six individuals were selected to undergo desensitization. All were female with allergic background including chronic spontaneous urticaria, anaphylaxis to medications, and/or vaccines. The main symptom after their first dose was difficulty swallowing with lightheadedness or immediate urticaria, angioedema, and/or dizziness. Two patients had positive skin testing. One patient was on chronic antihistamines which resulted in an inconclusive PEG skin test and the skin testing was negative for the three other patients. During the desensitization, two patients reported cutaneous symptoms of an immediate reaction and were managed with antihistamines. One of these patients also complained of ear pressure and had a drop in her systolic blood pressure, treated with intravenous fluids.ConclusionThis study suggests that some individuals with an immediate-type hypersensitivity reaction to their first dose of mRNA COVID-19 vaccine may safely receive their second dose using a desensitization protocol. The success of this desensitization protocol is a step forward in the fight against COVID-19, allowing more individuals to be immunized.

Published
2022
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20. Successful Milk Oral Immunotherapy Promotes Generation of Casein-Specific CD137+ FOXP3+ Regulatory T Cells Detectable in Peripheral Blood

Author

Yi Zhang, Lei Li, Geneviève Genest, Wei Zhao, Dan Ke, Sabrina Bartolucci, Nils Pavey, Tho-Alfakar Al-Aubodah, Duncan Lejtenyi, Bahar Torabi, Moshe Ben-Shoshan, Bruce Mazer, and Ciriaco A. Piccirillo

Subjects
allergy, milk immunotherapy, regulatory T cells, clinical trial, tolerance, desensitization, Immunologic diseases. Allergy, RC581-607
Abstract

BackgroundOral immunotherapy (OIT) is an emerging treatment for cow’s milk protein (CMP) allergy in children. The mechanisms driving tolerance following OIT are not well understood. Regulatory T cells (TREG) cells are key inhibitors of allergic responses and promoters of allergen-specific tolerance. In an exploratory study, we sought to detect induction of allergen-specific TREG in a cohort of subjects undergoing OIT.MethodsPediatric patients with a history of allergic reaction to cow’s milk and a positive Skin Pick Test (SPT) and/or CMP-specific IgE >0.35 kU, as well as a positive oral challenge to CMP underwent OIT with escalating doses of milk and were followed for up to 6 months. At specific milestones during the dose escalation and maintenance phases, casein-specific CD4+ T cells were expanded from patient blood by culturing unfractionated PBMCs with casein in vitro. The CD4+ T cell phenotypes were quantified by flow cytometry.ResultsOur culture system induced activated casein-specific FOXP3+Helios+ TREG cells and FOXP3- TEFF cells, discriminated by expression of CD137 (4-1BB) and CD154 (CD40L) respectively. The frequency of casein-specific TREG cells increased significantly with escalating doses of milk during OIT while casein-specific TEFF cell frequencies remained constant. Moreover, expanded casein-specific TREG cells expressed higher levels of FOXP3 compared to polyclonal TREG cells, suggesting a more robust TREG phenotype. The induction of casein-specific TREG cells increased with successful CMP desensitization and correlated with increased frequencies of casein-specific Th1 cells among OIT subjects. The level of casein-specific TREG cells negatively correlated with the time required to reach the maintenance phase of desensitization.ConclusionsOverall, effective CMP-OIT successfully promoted the expansion of casein-specific, functionally-stable FOXP3+ TREG cells while mitigating Th2 responses in children receiving OIT. Our exploratory study proposes that an in vitro TREG response to casein may correlate with the time to reach maintenance in CMP-OIT.

Published
2021
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21. Disparities in rate, triggers, and management in pediatric and adult cases of suspected drug‐induced anaphylaxis in Canada

Author

Sofianne Gabrielli, Ann E. Clarke, Harley Eisman, Judy Morris, Lawrence Joseph, Sebastien La Vieille, Peter Small, Rodrick Lim, Paul Enarson, Michal Zelcer, Edmond S. Chan, Chris Mill, and Moshe Ben‐Shoshan

Subjects
Anaphylaxis, anti‐bacterial agents, anti‐inflammatory agents (non‐steroidal), drug hypersensitivity, skin tests, Immunologic diseases. Allergy, RC581-607
Abstract

Abstract Introduction Data is sparse on drug‐induced anaphylaxis (DIA) and there have not been studies assessing the differences in clinical characteristics and management of DIA between adults and children. Objective We assessed the percentage, diagnosis, and management of DIA among all anaphylaxis visits in three pediatric and one adult emergency departments (ED) across Canada. Methods Children presenting to the Montreal Children's Hospital (MCH), British Columbia Children's Hospital (BCCH), and Children's Hospital at London Health Sciences Center and adults presenting to Hôpital du Sacré‐Coeur with anaphylaxis were recruited as part of the Cross‐Canada Anaphylaxis Registry. A standardized data form documenting the reaction and management was completed and patients were followed annually to determine assessment by allergist and use of confirmatory tests. Results From June 2012 to May 2016, 51 children were recruited from the pediatric centers and 64 adults from the adult center with drug‐induced anaphyalxis. More than half the cases were prospectively recruited. The percentage of DIA among all cases of anaphylaxis was similar in all three pediatric centers but higher in the adult center in Montreal. Most reactions in children were triggered by non‐antibiotic drugs, and in adults, by antibiotics. The majority of adults and a third of children did not see an allergist after the initial reaction. In those that did see an allergist, diagnosis was established by either a skin test or an oral challenge in less than 20% of cases. Conclusions Our results reveal disparities in rate, culprit, and management of DIA in children versus adults. Further, most cases of suspected drug allergy are not appropriately diagnosed. Guidelines to improve assessment and diagnosis of DIA are required.

Published
2018
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22. WAO International Scientific Conference (WISC 2016) Abstracts

Author

Jun Bao, Yi-Hui Wang, Quan-Hua Liu, Yi-Xiao Bao, Nurit Azouz, Julie Caldwell, Leanne Ray, Mark Rochman, Melissa Mingler, Matthew Eilerman, Ting Wen, Jocelyn Biagini Myers, Gurjit Khurana Hershey, Leah Kottyan, Lisa Martin, Rothenberg Marc, Victor Gonzalez-Uribe, Jaime Del Rio-Chivardi, Blanca Del Rio-Navarro, Hongfei Lou, Siyuan Ma, Yan Zhao, Feifei Cao, Fei He, Zhongyan Liu, Chengshuo Wang, Claus Bachert, Luo Zhang, Elissa Abrams, Allan Becker, Amit Kandhare, Subhash Bodhankar, Nicole Grossman, Gheorghe Doros, Francine Laden, Anne Fuhlbrigge, Michael Wechsler, Wilson Pace, Barbara Yawn, Elliot Israel, Junehyuk Lee, Frederick Adler, Peter Kim, Yung Feng Huang, Ying Yao Chen, Chiun Yen Pan, Herng Sheng Lee, Michael Khalemsky, David G. Schwartz, Pavel Kolkhir, Dmitry Pogorelov, Nikolay Kochergin, Hirsh Komarow, Michael Young, Robin Eisch, Linda Scott, Dean Metcalfe, Alexander Singer, Andrew Wakeman, Thomas Gerstner, Woo-Jung Song, Ji-Su Shim, Ha-Kyeong Won, Sung-Yoon Kang, Kyoung-Hee Sohn, Byung-Keun Kim, Eun-Jung Jo, Min-Hye Kim, Sang-Heon Kim, Heung-Woo Park, Sun-Sin Kim, Yoon-Seok Chang, Alyn H. Morice, Byung-Jae Lee, Sang-Heon Cho, Kyung-Up Min, Maria Assunta Boscolo, Giulio Brivio, Sergio Bosisio, Nicoletta Manzocchi, Edoardo Pulixi, Giulia Grignani, Eloisia D’Andrea, Massimo Ricci, Elena Passini, Maurizio Italia, Marilyn Urrutia-Pereira, Stefani Fagundes, Vinicius Jardim Oliano, Dirceu Solé, Sadia Benzaquen, Alejandro Aragaki, Ricardo Balestra, Dawn Harden, Danielle Caudell-Stamper, Gilbert Glady, Mark Holbreich, Nataliya Lyakhovska, Igor Kaidashev, Jaromir Bystron, Beata Hutyrova, Galina Balakirski, Luk Vanstreels, Gerda Wurpts, Hans F. Merk, Jens Malte Baron, Johanna Plange, Hans-Peter Rihs, Monika Raulf, Stefani Roeseler, Alberto Tolcachier, Armando Chamorro, Ruth Otero, Joel Brooks, Michael Hess, Jared Benz, Joseph MacDonald, Usma Chatha, Dale Lent, Şükran Köse, Bengü Gireniz Tatar, Gülgün Akkoçlu, İbrahim Çukurova, İlker Ödemiş, Ayşin Kılınç Toker, Abdullahi Hasssan, Abdulrazaq Abdullahi Gobir, Cheol-Woo Kim, Young Hwa Choi, Jeong Hye Lee, Rae Jeong Cho, Yu Ran Nam, Joo Hyun Nam, Woo Kyung Kim, Ivana Filipovic, Zorica Zivkovic, Djordje Filipovic, Dana Shik, Andrew Smith, Wang Yui Hsi, Stuart Friedman, Yonatan Gizaw, Rima Bakhda, Kumail Mohammed, Richard Wasserman, Angela Hague, Deanna Pence, Joanna Rolen, Robert Sugerman, Stacy Silvers, Qurat Kamili, Nadezhda Knauer, Alexandr Zazernyi, Elena Blinova, Daria Demina, Vladimir Kozlov, Komal Agrawal, Sagar Kale, Naveen Arora, Volha Vasilkova, Tatiana Mokhort, William Silvers, Rachel Eisenberg, Rushita Mehta, Arye Rubinstein, Antony Aston, Paul Turner, Monica Ruiz-Garcia, Robert Boyle, Simon Brown, Yael Dinur Schejter, Adi Ovadia, Vy Kim, Brenda Reid, Chaim Roifman, Lana Rosenfield, Ernie Avilla, Laurie Harada, Marilyn Allen, Susan Waserman, Ho Joo Yoon, Gun Woo Koo, Suk-Il Chang, Hye-Ran Yoon, Dong Won Park, Tai Sun Park, Ji-Yong Moon, Tae Hyung Kim, Jang Won Sohn, Dong Ho Shin, Tsici Jorjoliani, Lia Jorjoliani, Nino Adamia, Nona katamadze, Deepika Ramachandra, Liana Jorjoliani, Rusudan Karseladze, Lali Saginadze, Natalia Chkuaseli, Anna Dolgova, Olga Stukolova, Anna Sudina, Anna Cherkashina, German Shipulin, Richard Rosenthal, Harvey Howe, Paul Knause, Rony Greemberg, Jean Jacques De Bruycker, Isabel Fernandez, Françoise Le Deist, Elie Haddad, Yeong Ho Rha, Kyung Suk Lee, Sun Hee Choi, Herman Tam, Estelle Simons, Elinor Simons, Maria Golebiowska-Wawrzyniak, Katarzyna Markiewicz, Yoram Faitelson, Miguel Stein, Avigdor Mandelberg, Ilan Dalal, Michael Levin, Lelani Hobane, Wisdom Basera, Maresa Botha, Claudia Gray, Heather Zar, Biserka Jovkovska Kjaeva, Zoran Arsovski, Vesna Grivcheva-Panovska, Adeyinka Odebode, Adedotun Adekunle, Peter Adeonipekun, Ebenezer Farombi, Nadezhda Camacho-Ordoñez, Alejandrina Josefina Martinez-Vázquez, María de la Luz H. García-Cruz, Qi Tan, Rui Min, Guan-qun Dai, Wei-Ping Xie, Huang Mao, Hong Wang, Rakesh Yadav, Sneha Singh, Divya Yadav, Ekaterina Khaleva, Henry T. Bahnson, Amber Franz, Lene Heise Garvey, Nicola Jay, Rubaiyat Haque, Adam Fox, Gideon Lack, George du Toit, Snezana Radic, Branislava Milenkovic, Ana Neskovic, Ljiljana Danojevic, Liat Nachshon, Michael Goldberg, Michael Levy, Yitzhak Katz, Arnon Elizur, Cristine Rosario, Juliana Kasper, Herbeto Chong-Neto, Carlos Riedi, Nelson Rosario, Michael B. Levy, Ronly Har-Even, Mor Carmel, Michael R. Goldberg, Maia Kherkheulidze, Nani Kavlashvili, Eka Kandelaki, Nino Adamai, Irma Ubiria, Andrea Burke, Monika Kastner, Denica Zheleva, Razvigor Darlenski, Konstantinos Bozinakis, Anastasios Kriebardis, Sofia Styliara, Aikaterini Karastathi, Nikolaos Farmakas, Maria Luiza Kraft Kohler Ribeiro, Ana Carolina Barcellos, Hannah Gabriele Ferreira Silva, Luís Henrique Mattei Carletto, Marcela Carolina Bet, Nathalia Zorze Rossetto, Nelson Augusto Rosario, Herberto Jose Chong-Neto, Fernanda Valença, Marina Novaes, Mariana Gomes, Carla Seifert, Alfredo Neto, Flavia Loyola, José Rios, Tatiana Silva, Aline Neves, Oznur Abadoglu, Bilun Gemicioglu, Hasan Bayram, Arif Cimrin, Levent Akyildiz, Aykut Cilli, Hakan Gunen, Tevfik Ozlu, Mecit Suerdem, Esra Uzaslan, Zeynep Misirligil, Snezana Ristic-Stojanovic, A. Milicevic, A. Milenkovic, Jelena Cvejic, Jelena Jankovic, Sanja Dimic-Janjic, Natasa Djurdjevic, Vladyslava Barzylovych, Tetiana Umanets, Anastasia Barzylovych, Karyn Winkler, Jessica Margarinos, Dylan Martin, Maja Nowakowski, Rauno Joks, Tsili Zangen, Olga Bernadsky, Mona Boaz, Gratiana Hermann, Rachel Aviv, Olga Kuperboim, Larisa Ramichanov, Efrat Broide, Raanan Shamir, Noam Zevit, Ron Shaoul, Alex Fich, Arie Levine, Isaac Melamed, Roopesh Singh Gangwar, Yael Minai-Fleminger, Mansour Seaf, Amichai Gutgold, Aarti Shikotra, Anoop Chauhan, Stephen Holgate, Peter Bradding, Peter Howarth, Ron Eliashar, Neville Berkman, Francesca Levi-Schaffer, Sung-il Woo, Betul Celik, Tangul Bulut, Arzu Didem Yalcin, Luiz Querino Caldas, Ronit Confino-Cohen, Yossi Rosman, Arnon Goldberg, Oded Breuer, Roopesh Singh, Ahlam Barhoum, Eitan Kerem, Tatiana Slavyanskaya, Revaz Sepiashvili, Elena A. Blinova, Ekaterina A. Pashkina, Marina I. Leonova, Vera M. Nepomnyaschikh, Darya V. Demina, Vladimir A. Kozlov, Revital Shamri, Kristen M. Young, Peter F. Weller, Rodolfo de Paula Vieira, Manoel Carneiro Oliveira-Junior, Nilsa Regina Damasceno-Rodrigues, Fernanda Magalhães Arantes-Costa, Milton Arruda Martins, Ana Paula Ligeiro Oliveira, Alfred Bernard, Antonia Sardella, Catherine Voisin, Simon Royce, Hamish Philpott, Sanjay Nandurkar, Francis Thien, Peter Gibson, Rodolfo Bianchini, Franziska Roth-Walter, Anna Ohradanova-Repic, Gerlinde Hofstetter, Ina Herrmann, Maria Isabel Carvalho, Karin Hufnagl, Erika Bajna, Georg Roth, Hannes Stockinger, Erika Jensen-Jarolim, Meital Almog, Aharon Kessel, Larisa Apov, Carlos Sanchez Salguero, Alvaro Sanchez Chacon, Abbos Nazarov, Shaxbos Ergashev, Irina Nesterova, Svetlana Kovaleva, Galina Chudilova, Ludmila Lomtatidze, Sarah De Schryver, Alizee Dery, Ann Clarke, Kari Nadeau, Kimberly Weatherall, Celia Greenwood, Denise Daley, Yuka Asai, Moshe Ben-Shoshan, Irina Balmasova, Elena Malova, Stefanie Wagner, Luis F. Pacios, Michael Wallner, Markus Wiederstein, Anna E. Tevs, Nataly Tataurshchikova, Baigalmaa Sangidorj, Anna Ronzhina, Manana Chikhladze, Oliver F. Wirz, Willem van de Veen, David Mirer, Hideaki Morita, Can Altunbulakli, Sebastian L. Johnston, Nicholas Glanville, Nikolaos G. Papadopoulos, Cezmi A. Akdis, Mübeccel Akdis, Avner Reshef, Marc Riedl, Vesna Grivcheva Panovska, Dumitru Moldovan, James Baker, William H. Yang, Sladjana Andrejevic, Richard F. Lockey, Roman Hakl, Shmuel Kivity, Luca Bellizzi, Joseph R. Harper, Anurag Relan, and Marco Cicardi

Subjects
Immunologic diseases. Allergy, RC581-607
Published
2017
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23. Canadian Society of Allergy and Clinical Immunology annual scientific meeting 2016

Author

Mohammad A. Alsayegh, Hanan Alshamali, Mousa Khadada, Amanda Ciccolini, Anne K. Ellis, Diana Quint, William Powley, Laurie Lee, Yahya Fiteih, Shairaz Baksh, Harissios Vliagoftis, Sebastien K. Gerega, Brad Millson, Katia Charland, Stephane Barakat, Xichun Sun, Ricardo Jimenez, Susan Waserman, Mark J. FitzGerald, Jacques Hébert, Josiane Cognet-Sicé, Kevin E. Renahan, Saiful Huq, Rishma Chooniedass, Scott Sawyer, Hans Pasterkamp, Allan Becker, Steven G. Smith, Shiyuan Zhang, Kavisha Jayasundara, Claire Tacon, Alex Simidchiev, Gilbert Nadeau, Necdet Gunsoy, Hana Mullerova, Frank Albers, Young Woong Kim, Casey P. Shannon, Amrit Singh, Helen Neighbour, Mark Larché, Scott J. Tebbutt, Annika Klopp, Lorena Vehling, Allan B. Becker, Padmaja Subbarao, Piushkumar J. Mandhane, Stuart E. Turvey, Malcolm R. Sears, Meghan B. Azad, and the Canadian Healthy Infant Longitudinal Development Study Investigators, Keely Loewen, Barret Monchka, Salaheddin M. Mahmud, Geert ‘t Jong, Cristina Longo, Gillian Bartlett, Francine M. Ducharme, Tibor Schuster, Brenda MacGibbon, Tracie Barnett, Michelle L. North, Jeff Brook, Elizabeth Lee, Vanessa Omana, Jenny Thiele, Lisa M. Steacy, Greg Evans, Miriam Diamond, Gordon L. Sussman, Yann Amistani, Kathy Abiteboul, Mark W. Tenn, ChenXi Yang, Christopher Carlsten, Edward M. Conway, Douglas Mack, Yasmin Othman, Colin M. Barber, Chrystyna Kalicinsky, Andrea E. Burke, Mary Messieh, Parameswaran Nair, Chun T. Che, Lindsay Douglas, Joel Liem, Lucy Duan, Charlotte Miller, Pascale Dupuis, Lori A. Connors, Michael N. Fein, Joseph Shuster, Hani Hadi, Brooke Polk, Nikita Raje, Roxane Labrosse, Philippe Bégin, Louis Paradis, Anne Des Roches, Jonathan Lacombe-Barrios, Sanju Mishra, Gina Lacuesta, Meredith Chiasson, Babar Haroon, Kara Robertson, Thomas Issekutz, Desmond Leddin, Stephen Couban, Lori Connors, Adrienne Roos, Amin Kanani, Edmond S. Chan, Robert Schellenberg, Lana Rosenfield, Anna Cvetkovic, Kevin Woodward, Jaclyn Quirt, Wade T. A. Watson, Edson Castilho, Jennifer A. Sullivan, Beverley Temple, Donna Martin, Victoria E. Cook, Christopher Mills, Elodie Portales-Casamar, Lisa W. Fu, Alexander Ho, Jeffrey Zaltzman, Lucy Chen, Peter Vadas, Sofianne Gabrielli, Ann Clarke, Harley Eisman, Judy Morris, Lawrence Joseph, Sebastien LaVieille, Moshe Ben-Shoshan, François Graham, Charles Barnes, Jay Portnoy, Vincent Stagg, Elinor Simons, Diana Lefebvre, David Dai, Piushkumar Mandhane, Malcolm Sears, Herman Tam, F. Estelle R. Simons, Dhaifallah Alotaibi, Bassel Dawod, Matthew C. Tunis, Jean Marshall, Marylin Desjardins, Marianne Béland, Duncan Lejtenyi, Jean-Phillipe Drolet, Martine Lemire, Christos Tsoukas, Francisco J.D. Noya, Reza Alizadehfar, Christine T. McCusker, Bruce D. Mazer, Danay Maestre-Batlle, Evelyn Gunawan, Christopher F. Rider, Anette K. Bølling, Olga M. Pena, Daniel Suez, Isaac Melamed, Iftikhar Hussain, Mark Stein, Sudhir Gupta, Kenneth Paris, Sandor Fritsch, Christelle Bourgeois, Heinz Leibl, Barbara McCoy, Martin Noel, Leman Yel, Ori Scott, Brenda Reid, Adelle Atkinson, Vy Hong-Diep Kim, Chaim M. Roifman, Eyal Grunebaum, Eiman AlSelahi, Fernando Aleman, Amber Oberle, Mike Trus, Gordon Sussman, Amin S. Kanani, Olivier Chambenoi, Sima Chiva-Razavi, Savannah Grodecki, Nikhil Joshi, Peter Menikefs, David Holt, Teresa Pun, Damian Tworek, Raphael Hanna, Delia Heroux, Elli Rosenberg, Leah Stiemsma, Stuart Turvey, Judah Denburg, Christopher Mill, Timothy Teoh, Preeti Zimmer, Vishal Avinashi, Mihaela Paina, Ahmed A. Darwish Hassan, John Paul Oliveria, Chris Olesovsky, Gail Gauvreau, Linda Pedder, Paul K. Keith, Greg Plunkett, Michelle Bolner, Persia Pourshahnazari, Donald Stark, Kateryna Vostretsova, Andrew Moses, Andrew Wakeman, Alexander Singer, Thomas Gerstner, Elissa Abrams, Sara F. Johnson, and Roberta L. Woodgate

Subjects
Asthma, Food Allergy, Allergic Rhinitis, Chronic Granulomatous Disease, Immunologic diseases. Allergy, RC581-607
Published
2017
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24. Abstracts from the Food Allergy and Anaphylaxis Meeting 2016

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Guillaume Pouessel, Claire Claverie, Julien Labreuche, Jean-Marie Renaudin, Aimée Dorkenoo, Mireille Eb, Anne Moneret-Vautrin, Antoine Deschildre, Stephane Leteurtre, Linus Grabenhenrich, Margitta Worm, Sabine Dölle, Kathrin Scherer, Isidor Hutteger, Morten Christensen, Carsten Bindslev-Jensen, Charlotte Mortz, Esben Eller, Henrik Fomsgaard Kjaer, Leonor Carneiro-Leão, Jenny Badas, Alice Coimbra, Dikla Pivko Levy, Moshe Ben-Shoshan, Ayelet Rimon, Shira Benor, Nicolette J. T. Arends, Nikki Edelbroek, Hans de Groot, Joyce A. M. Emons, H. Kim A. Brand, Dirk Verhoeven, Leonieke N. van Veen, Nicolette W. de Jong, Geunwoong Noh, Eun Ha Jang, Mariona Pascal, Olga Dominguez, Mònica Piquer, Montserrat Alvaro, Rosa Jimenez-Feijoo, Jaime Lozano, Adriana Machinena, Maria del Mar Folqué, Maria Teresa Giner, Ana María Plaza, Paul Turner, Nandinee Patel, Marta Vazquez-Ortiz, Sarah Lindsley, Lucy Walker, Simon Rosenberg, Adriano Mari, Claudia Alessandri, Ivana Giangrieco, Lisa Tuppo, Chiara Rafaiani, Georg Mitterer, Michela Ciancamerla, Rosetta Ferrara, Maria Livia Bernardi, Danila Zennaro, Maurizio Tamburrini, Maria Antonetta Ciardiello, Christian Harwanegg, Antonio Fernandez, Regina Selb, Philippe Egenmann, Michelle Epstein, Karin Hoffmann-Sommergruber, Frits Koning, Martinus Lovik, E. N. Clare Mills, Javier Moreno, Henk van Loveren, Jean-Michel Wal, Susanne Diesner, Cornelia Bergmayr, Barbara Pfitzner, Vera Elisabeth Assmann, Philipp Starkl, David Endesfelder, Thomas Eiwegger, Zsolt Szepfalusi, Heinz Fehrenbach, Erika Jensen-Jarolim, Anton Hartmann, Isabella Pali-Schöll, Eva Untersmayr, Soren Wille, Peter Meyer, Caroline Klingebiel, Jonas Lidholm, Angelica Ehrenberg, Jonas Östling, Isabelle Cleach, Jean-Louis Mège, Joana Vitte, Roberta Aina, Pawel Dubiela, Sabine Pfeifer, Merima Bublin, Christian Radauer, Piotr Humeniuk, Stefan Kabasser, Riccardo Asero, Gador Bogas, Francisca Gomez, Paloma Campo, Maria Salas, Inmaculada Doña, Esther Barrionuevo, Maria Auxiliadora Guerrero, Cristobalina Mayorga, Ana Prieto, Domingo Barber, Maria Jose Torres, Annette Jamin, Andrea Wangorsch, Barbara Ballmer, Stefan Vieths, Stephan Scheurer, Danijela Apostolovic, Jelena Mihailovic, Maja Krstic, Maria Starkhammar, Tanja Cirkovic Velickovic, Carl Hamsten, Marianne van Hage, Francine C. van Erp, Edward F. Knol, Hannah M. Kansen, Bo Pontoppidan, Yolanda Meijer, Cornelis K. van der Ent, André C. Knulst, Rebekah Sayers, Helen Brown, Adnan Custovic, Angela Simpson, Claire Mills, Juliane Schulz, Network for Online Registration of Anaphylaxis (NORA), Jaap Akkerdaas, Muriel Totis, Annabelle Capt, Corinne Herouet-Guicheney, Ronald van Ree, Tushar Banerjee, Antima Banerjee, Mathilde Claude, Grégory Bouchaud, Roberta Lupi, Laure Castan, Olivier Tranquet, Sandra Denery-Papini, Marie Bodinier, Chantal Brossard, Rosella De Poi, Elisa Gritti, Emiliano De Dominicis, Bert Popping, Patrizia Polverino de Laureto, Kati Palosuo, Anna Kaarina Kukkonen, Anna Pelkonen, Mika Mäkelä, Nanju Alice Lee, Johanna Rost, Sridevi Muralidharan, Dianne Campbell, Sam Mehr, Catherine Nock, Joseph Baumert, Steve Taylor, Carla Mastrorilli, Salvatore Tripodi, Carlo Caffarelli, Serena Perna, Andrea Di Rienzo Businco, Ifigenia Sfika, Arianna Dondi, Annamaria Bianchi, Carlotta Povesi Dascola, Giampaolo Ricci, Francesca Cipriani, Nunzia Maiello, Michele Miraglia del Giudice, Tullio Frediani, Simone Frediani, Francesco Macrì, Chiara Pistoletti, Iride Dello Iacono, Maria Francesca Patria, Elena Varin, Diego Peroni, Pasquale Comberiati, Loredana Chini, Viviana Moschese, Sandra Lucarelli, Roberto Bernardini, Giuseppe Pingitore, Umberto Pelosi, Roberta Olcese, Matteo Moretti, Anastasia Cirisano, Diego Faggian, Alessandro Travaglini, Mario Plebani, Maria Carmen Verga, Mauro Calvani, Paolo Giordani, Paolo Maria Matricardi, Noe Ontiveros, Francisco Cabrera-Chavez, Julie Galand, Etienne Beaudouin, The Anaphylaxis Working Group of the French Allergology SocietyThe Anaphylaxis Working Group of the French Allergology Society, Florence Pineau, Shinobu Sakai, Kayoko Matsunaga, Reiko Teshima, Colette Larré, Sandra Denery, Sebastian Tschirner, Valérie Trendelenburg, Gabriele Schulz, Bodo Niggemann, Kirsten Beyer, Youcef Bouferkas, Younes Belabbas, Djamel Saidi, Omar Kheroua, Kamel Eddine El Mecherfi, Malika Guendouz, Abir Haddi, Hanane Kaddouri, Luis Amaral, Ana Pereira, Susana Rodrigues, Mareen Datema, Laurian Jongejan, Michael Clausen, Andre Knulst, Nikolaos Papadopoulos, Marek Kowalski, Frédéric de Blay, Aeilko Zwinderman, Karin Hoffman-Sommergruber, Barbara Ballmer-Weber, Montserrat Fernandez-Rivas, Shan Deng, Jia Yin, Charlotte Eisenmann, Maria Nassiri, Rabea Reinert, Johanna P. M. van der Valk, Roy Gerth van Wijk, Yvonne Vergouwe, Ewout W. Steyerberg, Marit Reitsma, Harry J. Wichers, Huub F. J. Savelkoul, Berber Vlieg-Boerstra, Anthony E. J. Dubois, Fabrícia Carolino, Ana Rodolfo, Josefina Cernadas, Dasha Roa-Medellín, Ana Rodriguez-Fernandez, Joaquín Navarro, Vicente Albendiz, María Luisa Baeza, Sonsoles Intente-Herrero, Andrea Mikkelsen, Kirsten Mehlig, Lauren Lissner, Linda Verrill, Stefano Luccioli, Jolanda van Bilsen, Frieke Kuper, André Wolterbeek, Tanja Rouhani Rankouhi, Lars Verschuren, Hilde Cnossen, Prescilla Jeurink, Johan Garssen, Léon Knippels, Jossie Garthoff, Geert Houben, Winfried Leeman, M. Eleonore Pettersson, Afke M. M. Schins, Gerard H. Koppelman, Boudewjin J. Kollen, Svitlana Zubchenko, Sarah Kuntz, Pablo Mérida, Montserrat Álvaro, Monica Piquer, Carmen Riggioni, Juan Heber Castellanos, Rosa Jimenez, Melanie Cap, Elodie Drumez, Stéphanie Lejeune, Caroline Thumerelle, Clémence Mordacq, Véronique Nève, Sonia Ricò, Margherita Varini, Rita Nocerino, Linda Cosenza, Antonio Amoroso, Margherita Di Costanzo, Carmen Di Scala, Giorgio Bedogni, Roberto Berni Canani, Paul J. Turner, Paloma Poza-Guedes, Ruperto González-Pérez, Inmaculada Sánchez-Machín, Victor Matheu-Delgado, Erik Wambre, Anne-Sofie Ballegaard, Charlotte Madsen, Juliane Gregersen, Katrine Lindholm Bøgh, Philippe Aubert, Michel Neunlist, Antoine Magnan, Daniel Lozano-Ojalvo, Alba Pablos-Tanarro, Leticia Pérez-Rodríguez, Elena Molina, Rosina López-Fandiño, Akila Rekima, Patricia Macchiaverni, Mathilde Turfkruyer, Sebastien Holvoet, Lénaïck Dupuis, Nour Baiz, Isabella Annesi-Maesano, Annick Mercenier, Sophie Nutten, Valérie Verhasselt, Ines Mrakovcic-Sutic, Srdan Banac, Ivana Sutic, Zdenka Baricev-Novakovic, Ingrid Sutic, Valentino Pavisic, Rosa Muñoz-Cano, Teodoríkez Jiménez-Rodríguez, Daniel Corbacho, Jordi Roca-Ferrer, Joan Bartra, Aleksandar Bulog, Vladimir Micovic, Lidia Markiewicz, Agata Szymkiewicz, Anna Szyc, Barbara Wróblewska, Bryan M. Harvey, Lucien F. Harthoorn, A. Wesley Burks, Georgios Rentzos, Anna-Lena Bramstång Björk, Ulf Bengtsson, Colin Barber, Chrystyna Kalicinsky, Christine Breynaert, Lieve Coorevits, Cornelia Jansen, Erna Van Hoeyveld, Kristin Verbeke, Anne-Marie Kochuyt, Rik Schrijvers, Diana Deleanu, Adriana Muntean, Maria Konstantakopoulou, Maria Pasioti, Anastasia Papadopoulou, Anna Iliopoulou, Nikolaos Mikos, Evangelia Kompoti, Eunice Dias de Castro, Borja Bartalomé, Kok Loong Ue, Elizabeth Griffiths, Stephen Till, Kate Grimshaw, Graham Roberts, Anna Selby, Indre Butiene, Jose Ignacio Larco, Ruta Dubakiene, Ana Fiandor, Alessandro Fiocchi, Nikos Papadopoulos, Sigurveig Sigurdardottir, Aline Sprikkelman, Anne-Fleur Schoemaker, Paraskevi Xepapadaki, Thomas Keil, Zizi Cojocariu, Beatriz Secades Barbado, Vasti Iancu, Esozia Arroabarren, Marta Goñi Esarte, Miren Arteaga, Mayra Coutinho Andrade, Denise Borges, Jorge Kalil, Pedro Giavina Bianchi, Rosana Camara Agondi, Rinkesh Kumar Gupta, Akanksha Sharma, Kriti Gupta, Mukul Das, Premendra Dwivedi, Rusudan Karseladze, Liana Jorjoliani, Lali Saginadze, Mariam Tskhakaia, Katia Basello, Gabriele Piuri, Attilio Francesco Speciani, Michela Carola Speciani, Carla Camerotto, Francesco Zinno, Olga Pakholchuk, Svitlana Nedelska, Stefano Pattini, Maria Teresa Costantino, Silvia Peveri, Danilo Villalta, Eleonora Savi, Andrea Costanzi, Vera A. Revyakina, Marina A. Kiseleva, Elena D. Kuvshinova, Inna A. Larkova, Anton A. Shekhetov, Diana Silva, André Moreira, José Plácido, Hanneke van der Kleij, Esther van Twuijver, Robbert Sutorius, Pieter-Jan de Kam, Jenny van Odijk, Helen Lindqvist, Elin Lustig, Amyra Ali Azamar Jácome, Karla Leversia Borjas Aguilar, Miguel García Domínguez, David Alejandro Mendoza Hernández, Cristiano Caruso, Cono Casale, Gian Lodovico Rapaccini, Antonino Romano, Italo De Vitis, Renata R. Cocco, Carolina Aranda, Marcia C. Mallozi, Jackeline F. Motta, Lilian Moraes, Antonio Pastorino, Nelson Rosario, Ekaterini Goudouris, Arnaldo Porto, Neusa F. Wandalsen, Emanuel Sarinho, Flavio Sano, Dirceu Solé, Constantinos Pitsios, Maria Petrodimopoulou, Ekaterini Papadopoulou, Maria Passioti, Meropi Kontogianni, Nino Adamia, Ekaterina Khaleva, Ana Prieto del Prado, George Du Toit, Edyta Krzych, Urszula Samolinska-Zawisza, Konrad Furmanczyk, Aneta Tomaszewska, Filip Raciborski, Agnieszka Lipiec, Piotr Samel-Kowalik, Artur Walkiewicz, Jacek Borowicz, Boleslaw Samolinski, Aimee Lou Nano, Marysia Recto, Maria Luisa Somoza, Natalia Blanca López, Diana Pérez Alzate, Francisco Javier Ruano, Maria Isabel Garcimartín, Elisa Haroun, Maria Vázquez de la Torre, Antonia Rojas, Montserrat López Onieva, Gabriela Canto, Alexandra Rodrigues, Andreia Forno, António Jorge Cabral, Rute Gonçalves, Ilya Vorozhko, Tatyana Sentsova, Olga Chernyak, Svetlana Denisova, Lidia Ilènko, Valery Muhortnich, Caroline Zimmermann, Alexander Rohrbach, Faisal R. Bakhsh, Kollen Boudewijn, Anne-Marie Oomkes-Pilon, Dorien Van Ginkle, Mira Šilar, Anja Jeverica, Tina Vesel, Tadej Avčin, Peter Korošec, Johanna van der Valk, Irene Berends, Nicolette Arends, Maurits van Maaren, Harry Wichers, Joyce Emons, Anthony Dubois, Nicolette de Jong, Oksana Matsyura, Lesya Besh, Chung-Hsiung Huang, Tong-Rong Jan, Gary Stiefel, Jean Tratt, Kerrie Kirk, Fabricia Carolino, Stefania Arasi, Lucia Caminiti, Giuseppe Crisafulli, Chiara Fiamingo, Jlenia Fresta, Giovanni Pajno, Ben Remington, Astrid Kruizinga, W. Marty Blom, Joost Westerhout, Sabina Bijlsma, Joe Baumert, Mark Blankestijn, Henny Otten, Rob Klemans, Anouska D. Michelsen-Huisman, Harmieke van Os-Medendorp, Astrid G. Kruizinga, Astrid Versluis, Gert van Duijn, H. Mary-Lene de Zeeuw-Brouwer, Jacqueline J. M. Castenmiller, Hub P. J. M. Noteborn, Geert F. Houben, Kristian Bravin, David Luyt, Bushra Javed, Phil Couch, Christopher Munro, Phil Padfield, Matt Sperrin, Aideen Byrne, Lizalet Oosthuizen, Carina Kelleher, Fiona Ward, Niamh Brosnan, Graham King, Eva Corbet, Josué Alejandro Huertas Guzmán, Montserrat Bosque García, Oscar Asensio, Laura Valdesoiro Navarrete, Helena Larramona, Xavier Domingo Miró, Katarzyna Pyrz, Moira Austin, Yanne Boloh, Philip Couch, Deirdre Galloway, Pilar Hernandez, Jonathan O’B. Hourihane, Fiona Kenna, Barbara Majkowska-Wojciechowska, Lynne Regent, Marina Themisb, Sabine Schnadt, Aida Semic-Jusufagic, Audrey Dunn Galvin, Tiina Kauppila, Mikael Kuitunen, Nikolaos A. Kitsioulis, Nikolaos Douladiris, Sofia Kostoudi, Ioanna Manolaraki, Dimitris Mitsias, Emmanouil Manousakis, Nikolaos G. Papadopoulos, Rebecca Knibb, Jennifer Hammond, Richard Cooke, Jaakko Yrjänä, Anna-Maija Hanni, Päivi Vähäsarja, Oona Mustonen, Teija Dunder, Petri Kulmala, Eva Lasa, Carmen D’Amelio, Sara Martínez, Alejandro Joral, Gabriel Gastaminza, Maria Jose Goikoetxea, David C. A. Candy, Marleen T. J. Van Ampting, Manon M. Oude Nijhuis, Assad M. Butt, Diego G. Peroni, Adam T. Fox, Jan Knol, Louise J. Michaelis, Ines Padua, Patricia Padrao, Pedro Moreira, Renata Barros, Hanan Sharif, Manzoor Ahmed, Nehad Gomaa, Joris Mens, Koen Smit, Frans Timmermans, Tomaž Poredoš, Anja Koren Jeverica, Marjeta Sedmak, Evgen Benedik, Meta Accetto, Mirjana Zupančič, Glauce Yonamine, Gustavo Soldateli, Bruna Aquilante, Antonio Carlos Pastorino, Cleonir Lui de Moraes Beck, Andrea Keiko Gushken, Mayra de Barros Dorna, Cristiane Nunes dos Santos, Ana Paula Moschione Castro, Abdulhadi Al-Qahtani, Rand Arnaout, Agha Rehan Khaliq, Rashid Amin, Farrukh Sheikh, Jorge Alvarez, Marta Anda, Miriam Palacios, Montserrat De Prada, Carmen Ponce, Bianca Balbino, Riccardo Sibilano, Thomas Marichal, Nicolas Gaudenzio, Hajime Karasuyama, Pierre Bruhns, Mindy Tsai, Laurent L. Reber, Stephen J. Galli, Ana Reis Ferreira, Josefina R. Cernadas, Aida del Campo García, Sara Pereiro Fernández, Nerea Sarmiento Carrera, Fernando Bandrés Sánchez-Cruz, José Ramón Fernández Lorenzo, Stephanie Claus, Claudia Pföhler, Franziska Ruëff, Regina Treudler, Mercedes Escarrer Jaume, Agustin Madroñero, Maria Teresa Guerra Perez, Juan Carlos Julia, Charlotte Hands Plovdiv, Lee Gethings, Jim Langridge, Karine Adel-Patient, Hervé Bernard, Ivona Barcievic-Jones, Raditsa Sokolova, Rumyana Yankova, Mariya Ivanovska, Marianna Murdjeva, Tatyana Popova, Svetlan Dermendzhiev, Martin Karjalainen, Ulrike Lehnigk, Duncan Brown, Julie C. Locklear, Julie Locklear, Ioana Maris, Jonathan Hourihane, Cristina Ornelas, Joana Caiado, Manuel Branco Ferreira, Manuel Pereira-Barbosa, Yolanda Puente, Juan Carlos Daza, Francisco Javier Monteseirin, Natalia Ukleja-Sokolowska, Ewa Gawronska-Ukleja, Magdalena Zbikowska-Gotz, Zbigniew Bartuzi, Lukasz Sokolowski, Aine Adams, Bernard Mahon, Karen English, Nelly Gourdon-Dubois, Laetitia Sellam, Bruno Pereira, Elodie Michaud, Khaled Messaoudi, Bertrand Evrard, Jean-Luc Fauquert, Francisca Palomares, Gador Gomez, Maria Jose Rodriguez, Luisa Galindo, Ana Molina, Lorella Paparo, Maurizio Mennini, Rosita Aitoro, Adam Wawrzeńczyk, Michał Przybyszewski, Anna Wawrzeńczyk, Hulya Ercan Sarıcoban, Meltem Ugras, Zerrin Yalvac, Bertine M. J. Flokstra-de Blok, J. L. van der Velde, Andrea Vereda, Clara Ippolito, Amaranta Traversa, Daniela Adriano, Daniela Manila Bianchi, Silvia Gallina, Lucia Decastelli, Melina Makatsori, Anne Miles, Sonja Posega Devetak, Iztok Devetak, Soraya Ainad Tabet, Jeanette Fisker Trandbohus, Pernille Winther, Hans-Jørgen Malling, Kirsten Skamstrup Hansen, Lene Heise Garvey, Chia-Chi Wang, Yin-Hua Cheng, Chun-Wei Tung, Mariola Dietrich, Ingo Marenholz, Birgit Kalb, Sarah Grosche, Katharina Blümchen, Rupert Schlags, Mareike Price, Sylke Rietz, Jorge Esparza-Gordillo, Susanne Lau, Young-Ae Lee, Ali Almontasheri, Mohammad Al Bahkali, Sahar Elshorbagi, Abdullah Alfhaid, Mashary Altamimi, Eman Madbouly, Hassan Al-Dhekri, Rand K. Arnaout, Maria Basagaña, Sira Miquel, Borja Bartolomé, Bettina Brix, Stefanie Rohwer, Sandra Brandhoff, Alena Berger, Waltraud Suer, Alf Weimann, Cristina Bueno, Laura Martín-Pedraza, Sara Abián, Pablo San Segundo-Acosta, Juan Carlos López-Rodríguez, Rodrigo Barderas, Eva Batanero, Javier Cuesta-Herranz, María Teresa Villalba, Magna Correia, Filipe Benito-Garcia, Cristina Arêde, Susana Piedade, Mário Morais-Almeida, James Hindley, Ross Yarham, Anna Kuklinska-Pijanka, David Gillick, Karine Patient, Martin D. Chapman, Katrine L. Bøgh, Ana Miranda, Eugénia Matos, Anna Sokolova, Huan Rao, Ivona Baricevic-Jones, Frances Smith, Wentong Xue, Helga Magnusdottir, Anna G. Vidarsdottir, Sigrun Lund, Anders Blom Jensen, Bjorn R. Ludviksson, Reyna Simon, Robert Elfont, Sean Bennett, Robert Voyksner, Maria de Lurdes Torre, Songül Yürek, Margaretha A. Faber, Annick Bastiaensen, Evelyne Mangodt, Athina van Gasse, Ine Decuyper, Vito Sabato, Margo M. Hagendorens, Chris H. Bridts, Luc S. De Clerck, Didier Ebo, Susanne Schwarz, Mandy Ziegert, Saskia Albroscheit, Christian Schwager, Skadi Kull, Jochen Behrends, Niels Röckendorf, Frauke Schocker, Andreas Frey, Arne Homann, Wolf-Meinhard Becker, Uta Jappe, Nesrine Zaabat, Sylvia Osscini, Chantal Agabriel, Benoît Sterling, Ania Carsin, Valérie Liabeuf, Monica Maćków, Alina Zbróg, Monica Bronkowska, Justine Courtois, Romy Gadisseur, Catherine Bertholet, Pierre Lukas, Etienne Cavalier, Philippe Delahaut, Birgit Quinting, Margareta Brandt Gertmo, Ewa Ternesten Hasseus, Vladyslava Barzylovych, Júlio Oliveira, Luis F. Ensina, Carolina S. Aranda, Leire Dopazo, Rebeca Lopez, Raquel Perez, Laura Santos-Diez, Agurtzane Bilbao, Juan Miguel Garcia, Ignacio García Núñez, María Ángeles Algaba Mármol, María José Barasona Villarejo, José Antonio Bácter Martos, Marina Suárez Vergara, José María Ignacio García, Agata Michalska, Grzegorz Sergiejko, Robert Zacniewski, Ileana-Maria Ghiordanescu, Cristina Deaconu, Mihaela Popescu, Roxana Silvia Bumbacea, Alkerta Ibranji, Elida Nikolla, Gjustina Loloci, Nanna Juel-Berg, Lau Fabricius Larsen, Lars Kjaergaard Poulsen, João Marcelino, Ricardo Prata, Ana Célia Costa, Fátima Duarte, Marta Neto, Jennifer Santos, Luís Câmara Pestana, Daniel Sampaio, Paola Minale, Paola Dignetti, Donatella Bignardi, Irena Nedelea, Florin-Dan Popescu, Mariana Vieru, Florin-Adrian Secureanu, Carmen Saviana Ganea, Miguel Vieira, José Pedro Moreira Silva, Timothy Watts, Sophia Watts, Marta Lomikovska, Marina Peredelskaya, Natalia Nenasheva, Ivana Filipovic, Zorica Zivkovic, Djordje Filipovic, Jennette Higgs, Amena Warner, and Carla Jones

Subjects
Immunologic diseases. Allergy, RC581-607
Published
2017
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25. Interleukin 1α-Deficient Mice Have an Altered Gut Microbiota Leading to Protection from Dextran Sodium Sulfate-Induced Colitis

Author

Moran Nunberg, Nir Werbner, Hadar Neuman, Marina Bersudsky, Alex Braiman, Moshe Ben-Shoshan, Meirav Ben Izhak, Yoram Louzoun, Ron N. Apte, Elena Voronov, and Omry Koren

Subjects
bacteria, IL-1α, microbiome, gut, inflammatory bowel disease, Microbiology, QR1-502
Abstract

ABSTRACT Inflammatory bowel diseases (IBD) are a group of chronic inflammatory disorders of the intestine, with as-yet-unclear etiologies, affecting over a million people in the United States alone. With the emergence of microbiome research, numerous studies have shown a connection between shifts in the gut microbiota composition (dysbiosis) and patterns of IBD development. In a previous study, we showed that interleukin 1α (IL-1α) deficiency in IL-1α knockout (KO) mice results in moderate dextran sodium sulfate (DSS)-induced colitis compared to that of wild-type (WT) mice, characterized by reduced inflammation and complete healing, as shown by parameters of weight loss, disease activity index (DAI) score, histology, and cytokine expression. In this study, we tested whether the protective effects of IL-1α deficiency on DSS-induced colitis correlate with changes in the gut microbiota and whether manipulation of the microbiota by cohousing can alter patterns of colon inflammation. We analyzed the gut microbiota composition in both control (WT) and IL-1α KO mice under steady-state homeostasis, during acute DSS-induced colitis, and after recovery using 16S rRNA next-generation sequencing. Additionally, we performed cohousing of both mouse groups and tested the effects on the microbiota and clinical outcomes. We demonstrate that host-derived IL-1α has a clear influence on gut microbiota composition, as well as on severity of DSS-induced acute colon inflammation. Cohousing both successfully changed the gut microbiota composition and increased the disease severity of IL-1α-deficient mice to levels similar to those of WT mice. This study shows a strong and novel correlation between IL-1α expression, microbiota composition, and clinical outcomes of DSS-induced colitis. IMPORTANCE Here, we show a connection between IL-1α expression, microbiota composition, and clinical outcomes of DSS-induced colitis. Specifically, we show that the mild colitis symptoms seen in IL-1α-deficient mice following administration of DSS are correlated with the unique gut microbiota compositions of the mice. However, when these mice are exposed to WT microbiota by cohousing, their gut microbiota composition returns to resemble that of WT mice, and their disease severity increases significantly. As inflammatory bowel diseases are such common diseases, with limited effective treatments to date, there is a great need to better understand the interactions between microbiota composition, the immune system, and colitis. This study shows correlation between microbiota composition and DSS resistance; it may potentially lead to the development of improved probiotics for IBD treatment.

Published
2018
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