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Credit: United European Gastroenterology
(Vienna, October 17, 2016) Scientists have discovered that a protein in wheat triggers the inflammation of chronic health conditions, such as multiple sclerosis, asthma and rheumatoid arthritis, and also contributes towards the development of non-coeliac gluten sensitivity.
With past studies commonly focusing on gluten and its impact on digestive health, this new research, presented at UEG Week 2016, turns the spotlight onto a different family of proteins found in wheat called amylase-trypsin inhibitors (ATIs). The study shows that the consumption of ATIs can lead to the development of inflammation in tissues beyond the gut, including the lymph nodes, kidneys, spleen and brain. Evidence suggests that ATIs can worsen the symptoms of rheumatoid arthritis, multiple sclerosis, asthma, lupus and non-alcoholic fatty liver disease, as well as inflammatory bowel disease.
ATIs make up no more than 4% of wheat proteins, but can trigger powerful immune reactions in the gut that can spread to other tissues in the body. Lead researcher, Professor Detlef Schuppan from the Johannes Gutenberg University, Germany, explains, "As well as contributing to the development of bowel-related inflammatory conditions, we believe that ATIs can promote inflammation of other immune-related chronic conditions outside of the bowel. The type of gut inflammation seen in non-coeliac gluten sensitivity differs from that caused by coeliac disease, and we do not believe that this is triggered by gluten proteins. Instead, we demonstrated that ATIs from wheat, that are also contaminating commercial gluten, activate specific types of immune cells in the gut and other tissues, thereby potentially worsening the symptoms of pre-existing inflammatory illnesses".
Clinical studies are now due to commence to explore the role that ATIs play on chronic health conditions in more detail. "We are hoping that this research can lead us towards being able to recommend an ATI-free diet to help treat a variety of potentially serious immunological disorders" adds Professor Schuppan.
ATIs and Non-Coeliac Gluten Sensitivity
Further to inflaming chronic health conditions outside of the bowel, ATIs may contribute to the development on non-coeliac gluten sensitivity. This condition is now an accepted medical diagnosis for people who do not have coeliac disease but benefit from a gluten free diet. Intestinal symptoms, such as abdominal pain and irregular bowel movements, are frequently reported, which can make it difficult to distinguish from IBS. However, extraintestinal symptoms can assist with diagnosis, which include headaches, joint pain and eczema. These symptoms typically appear after the consumption of gluten-containing food and improve rapidly on a gluten-free diet. Yet, gluten does not appear to cause the condition.
Professor Schuppan hopes that the research will also help to redefine non-coeliac gluten sensitivity to a more appropriate term. He explains, "Rather than non-coeliac gluten sensitivity, which implies that gluten solitarily causes the inflammation, a more precise name for the disease should be considered."
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References
1. Zevallos V, Weinmann-Menke J, Meineck M et al. Alpha-amylase/trypsin inhibitors (ATIs) accelerate murine systemic lupus erythematosus. Poster presentation at the 16th International Coeliac Disease Symposium, 21-24 June 2015, Prague, Czech Republic. Poster P168.
2. Zevallos V, Yogev N, Nikolaev A et al. Consumption of wheat alpha-amylase/trypsin inhibitors (ATIs) enhances experimental autoimmune encephalomyelitis in mice. Oral presentation at the 16th International Coeliac Disease Symposium, 21-24 June 2015, Prague, Czech Republic.
3. Junker Y, Zeissig S, Kim S-J et al. Wheat amylase trypsin inhibitors drive intestinal inflammation via activation of toll-like receptor 4. J Exp Med 2012;209(13):2395-408.
4. Fasano A, Sapone A, Zevallos V et al. Nonceliac gluten and wheat sensitivity. Gastroenterology 2015;148(6):1195-204.
5.Schuppan D, Pickert G, Ashfaq-Khan M et al. Non-celiac wheat sensitivity: Differential diagnosis, triggers and implications. Best Pract Res Clin Gastroenterol 2015;29(3):469-76.
Notes to Editors
For further information, or to arrange an interview with Professor Detlef Schuppan, please contact Luke Paskins on +44 (0)1444 811099 or media@ueg.eu
About Professor Detlef Schuppan
Professor Schuppan is from the Institute of Translational Immunology at Mainz University Medical Centre, Germany. Professor Schuppan is an international expert in the fields of fibrosis and coeliac research and is presenting his findings at the Opening Plenary Session at UEG Week Vienna 2016.
About Professor Antonio Gasbarrini (UEG Spokesperson)
Professor Gasbarrini is a member of the UEG Scientific Committee from the Gemelli University Hospital in Rome, Italy.
About UEG Week
UEG Week is the largest and most prestigious gastroenterology meeting in Europe and has developed into a global congress. It attracts over 14,000 participants each year, from more than 120 countries, and numbers are steadily rising. UEG Week provides a forum for basic and clinical scientists from across the globe to present their latest research in digestive and liver diseases, and also features a two-day postgraduate course that brings together top lecturers in their fields for a weekend of interactive learning.
About UEG
UEG, or United European Gastroenterology, is a professional non-profit organisation combining all the leading European societies concerned with digestive diseases. Together, its member societies represent over 22,000 specialists, working across medicine, surgery, paediatrics, gastrointestinal oncology and endoscopy. This makes UEG the most comprehensive organisation of its kind in the world, and a unique platform for collaboration and the exchange of knowledge.
To advance standards of gastroenterological care and knowledge across Europe and the world, UEG offers numerous activities and initiatives, including:
- UEG Week, the biggest congress of its kind in Europe, and one of the two largest in the world.
- UEG Education, the universal source of knowledge in gastroenterology, providing online and classroom courses, a huge online library and delivering the latest GI news, fostering debate and discussion
- Training Support, funding for innovative training and educational programmes, as well as international scientific and professional co-operations
- UEG Journal, published bi-monthly, covering translational and clinical studies from all areas of gastroenterology
- EU Affairs, promoting research, prevention, early diagnosis and treatment of digestive diseases, and helping develop an effective health policy for Europe
Find out more about UEG's work by visiting http://www.ueg.eu or contact: Luke Paskins on +44 (0)1444 811099 or media@ueg.eu