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Digestive Enzymes Do Not Fully Degrade Gluten

Celiac.com 06/22/2015 - Currently available digestive enzymes do not fully degrade gluten, and are thus of questionable use for people with celiac disease or gluten intolerance, say a team of researchers. Prior research had shown that post-proline cutting enzyme effectively degrade the immunogenic gluten peptides. Several existing digestive enzyme supplements claim to promote gluten degradation.

Photo: CC--SuperFantasticThe research team set out to assess the degradation of immunogenic gluten epitopes by currently available digestive enzymes. The team included G. Janssen, C. Christis, Y. Kooy-Winkelaar, L. Edens, D. Smith, P. van Veelen, and F. Koning. They are variously affiliated with the Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden, The Netherlands, DSM Food Specialties in Delft, The Netherlands, and DSM Food Specialties in South Bend, Indiana, USA.

For their study, they assessed five commercially available digestive enzyme supplements along with purified digestive enzymes. They assessed these enzymes using enzyme assays and mass spectrometric identification. They monitored gluten epitope degradation using R5 ELISA, mass spectrometric analysis of the degradation products, and T cell proliferation assays. 

They found that the enzyme supplements leave the nine immunogenic epitopes of the 26-mer and 33-mer gliadin fragments largely intact. This is due to the high proline content of gluten molecules, which prevents gastrointestinal proteases from fully degrading them, leaving large proline-rich gluten fragments intact, including an immunogenic 33-mer from α-gliadin and a 26-mer from γ-gliadin.

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These latter peptides can trigger pro-inflammatory T cell responses resulting in tissue remodeling, malnutrition and a variety of other complications.

In contrast, the pure enzyme AN-PEP effectively degraded all nine epitopes in the pH range of the stomach at much lower dose.

From these results, the team concludes that currently available digestive enzyme supplements are ineffective in degrading immunogenic gluten epitopes.

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1 Response:

 
kayakinggal
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04 Jul 2015 3:24:28 PM PDT
Thank you for this article, very good information.




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Yes the first has wheat gluten in the ingredients, the second via the wheat flour. Here in the UK manufacturers HAVE to highlight gluten sources. Check the ingredients and if WHEAT, BARLEY, or RYE are mentioned *usually highlighted, italicised or underlined, then you will know there's gluten. Most of iceland's processed foods will probably be gluten filled to be honest. Any breadcrumbed or battered foods for instance. Ps, you and me both have another disease, the british one of apologising You don't need to, you're very welcome here and all of your questions are valid and understandable. It's going to get better

Hi, I am deeply sorry for posting on here again. As I am scheduled for an Endoscopy on the 9th May, I wanted to make sure that my gluten intake is being kept the same. I was wondering if the ingredients to these products contain gluten even though dextrose is in one of them? http://groceries.iceland.co.uk/iceland-32-breaded-chicken-nuggets-448g/p/52275 Chicken Breast Fillet (60%), Water, Wheat Flour, Breadcrumbs (Wheat Flour, Dextrose, Salt, Yeast), Rapeseed Oil, Salt, Wheat Gluten, Sugar, Yeast Extract, Garlic Powder, Onion Powder, White Pepper, Dried Sage. http://groceries.iceland.co.uk/iceland-10-breaded-chicken-burgers-550g/p/52276 Chicken Breast Fillet (60%), Water, Wheat Flour, Breadcrumbs (Wheat Flour, Dextrose, Salt, Yeast), Rapeseed Oil, Salt, Wheat Gluten, Sugar, Yeast Extract, Garlic Powder, Onion Powder, White Pepper, Dried Sage. Thank you for all your help so far,

JMG got it down pretty much, the painful and gluten effects from eating it should clear up in a month, damage symptoms you might notice some differences as early as 2-4months but most do not noticed major improvements til about 6 months to a year. I have been gluten-free for over 3 years all my villi have healed according to the doctor on my last scope. It is very important to not cheat and avoid any kind of CC as it can set you back weeks or months. I would suggest a whole foods only diet for the first month or two, no dairy, simple stews, soups, etc. make for easy to digest and simple meals. Check out the 101 thread for some good information. PS a new combo crockpot, steamer, rice cooker combo and liners for a crock pot will be a life saver for making simple meals and easy clean ups. Quick cook microwave ware will also be handy making sure you have gluten-free cooked meals if you can not get new cookware immediately. I normally suggest cleaning out the entire house, scrubbing down knobs, handles, on the drawers, sink, fridge, cubbards etc. throw out condiment jars, checking ingredients on everything in the house including your hygiene and makeup. Putting in drawer organizers for new utensils, throwing out scratched glass, teflon, plastic, and steel cookware. Throwing out any Tupperware, and cutting boards, some utensils that can not be cleaned well. Some times you can save cast iron and stainless steel cook ware if you can run it in your ovens cleaning cycle over 600F. Gluten is a protein like blood if you can not clean a item where a CSI team will not find it give it up, it is not a germ that can be killed with disinfectant. I use freezer paper for clean prep surfaces, also makes clean up a breeze, I tend to use gloves alot also when fixing foods,

Hi Allie and welcome First off, I know 3 years was a long wait, but at 17 you've figured out celiac way before many people do. That should make a big impact on minimising its effects and helping you with the diet, so, bizarrely enough, congratulations! A lot of good advice has been brought together in this thread: Don't worry that your symptoms are bad now. As you follow the diet your body will begin healing itself and you're still very young so hopefully this will go really smoothly. Think in terms of the next 6 months rather than weeks however, recovery will likely take a little time. Eat as healthily as you can, lots of whole foods and try to avoid the gluten free processed substitutes as your digestive system needs all the help it can get at this moment. You may want to avoid dairy as well for now and think about reintroducing it later. This site has been really helpful to me and others. I hope you find it just as useful. Best of luck! ps, your increased reaction to gluten during the challenge phase was perfectly normal. Many find that reintroducing it much worse than the initial affects and take some time to get over the challenge. That's why you'll see lots of posts here urging folks to 'stay on gluten' till their testing is complete! PPS( ) Inasmuch as your post can convey emotion, your's seemed positive Stay that way! At times the diet can be a bit isolating and some friends and family may struggle to understand. I'm sure it will be difficult at times making good choices and staying vigilant when everyone around you doesn't have to think twice. Stick with it, your health is paramount and it will be worthwhile. In time your good friends will get it and those that don't aren't worth worrying about. There are great foods you can eat and if not, learn to cook them yourself

Hi! My daughter is 19 was diagnosed at age 16. It took about 12-18 month s for her to fully heal from the damage and feel "normal" again. Also because of the damage done she had reactions to dairy, so you may want to try no or minimum dairy until youre fully healed. Just a suggestion. Hope you start feeling well soon!