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Study Examines Shared Genetic Architecture in Ten Pediatric Autoimmune Diseases

Celiac.com 09/16/2015 - Autoimmune disease, such as type 1 diabetes, Crohn's disease, and juvenile idiopathic arthritis, affect about 7 to 10 percent of the population in the Western Hemisphere.

Using genome-wide association studies (GWASs), researchers have identified hundreds of susceptibility genes, including shared associations across clinically distinct autoimmune diseases.

Kids picking flowers. Photo: CC-- Peter SchultzA team of researchers recently conducted an inverse χ2 meta-analysis across ten pediatric-age-of-onset autoimmune diseases (pAIDs) in a case-control study including more than 6,035 cases and 10,718 shared population-based controls.

The research team included Yun R Li, Jin Li, Sihai D Zhao, Jonathan P Bradfield, Frank D Mentch, S Melkorka Maggadottir, Cuiping Hou, Debra J Abrams, Diana Chang, Feng Gao, Yiran Guo, Zhi Wei, John J Connolly, Christopher J Cardinale, Marina Bakay, Joseph T Glessner, Dong Li, Charlly Kao, Kelly A Thomas, Haijun Qiu, Rosetta M Chiavacci, Cecilia E Kim, Fengxiang Wang, James Snyder, and Marylyn D Richie.

The are variously affiliated with The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA; Medical Scientist Training Program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; the Department of Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.; the Division of Allergy and Immunology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.; the Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA; the Program in Computational Biology and Medicine, Cornell University, Ithaca, New York, USA, and the Department of Computer Science, New Jersey Institute of Technology, Newark, New Jersey, USA.

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For their study, the team identified 27 genome-wide significant loci associated with one or more pAIDs, mapping to in silico–replicated autoimmune-associated genes (including IL2RA) and new candidate loci with established immunoregulatory functions such as ADGRL2, TENM3, ANKRD30A, ADCY7 and CD40LG.

The team functionally enriched the pAID-associated single-nucleotide polymorphisms (SNPs) for deoxyribonuclease (DNase)-hypersensitivity sites, expression quantitative trait loci (eQTLs), microRNA (miRNA)-binding sites and coding variants.

They also identified biologically correlated, pAID-associated candidate gene sets on the basis of immune cell expression profiling and found evidence of genetic sharing.

Network and protein-interaction analyses demonstrated converging roles for the signaling pathways of type 1, 2 and 17 helper T cells (TH1, TH2 and TH17), JAK-STAT, interferon and interleukin in multiple autoimmune diseases.


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4 Responses:

 
Cindy
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said this on
21 Sep 2015 12:40:37 PM PDT
Sorry, I am in the health field and this gave me absolutely no information of use. The 10 pediatric autoimmune diseases were not even identified.

 
Jefferson
Rating: ratingfullratingfullratingfullratingfullratingfull Unrated ( Author)
said this on
25 Sep 2015 10:45:23 AM PDT
I apologize for that, and I share your frustration. For this article, I did not have access to the full study, only the abstract. Usually, the abstracts are reasonably informative, but in this case, as you correctly noted, the pediatric autoimmune diseases were not identified. I'll follow-up on this and see if I can get that information into the article. Thanks again for your comment.

 
Bobbi
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said this on
23 Sep 2015 5:51:56 AM PDT
I have celiac disease since childhood, have a sister with lupus, one with MS and a nephew with Type 1 diabetes. This article didn't even mention what the autoimmune diseases where that they studied and linked. Very disappointed.

 
Jefferson
Rating: ratingfullratingfullratingfullratingfullratingfull Unrated ( Author)
said this on
30 Sep 2015 12:14:46 PM PDT
I, too, was disappointed with this information. The fault was not in the study, but in the very uninformative abstract. Please check my note to Cindy.




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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!