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Study Shows Non-synonymous Variant (Gly307Ser) in CD226 Confers Higher Risk for Multiple Autoimmune Diseases


New Study on CD and Multiple Autoimmune Diseases

Celiac.com 07/16/2010 - Advances in genetic science are allowing researchers to look more deeply into the genetic causes of auto-immune diseases, including celiac disease.

One recent study showed that a particular variation, called the non-synonymous (Gly307Ser) variant, rs763361, in the CD226 gene carries a higher risk for multiple autoimmune diseases in European Caucasian populations. At the conclusion of that study, though, there was still no comparable study of shared autoimmunity with CD226 in non-European populations.

An international research team set out to investigate any connection between this single nucleotide polymorphism (SNP) with autoimmune diseases in non-European populations. The team included Amit K. Maiti, Xana Kim-Howard, Swapan K. Nath, Celi Sun, and Parvathi Viswanathan; Laura Guillén and Alejandra C. Cherñavsky; Xiaoxia Qian and Nan Shen; Adriana Rojas-Villarraga and Juan-Manuel Anaya; Carlos Cañas, Gabriel J. Tobón; and Koichi Matsuda

They are affiliated variously with the Genetic Epidemiology Unit of the Arthritis and Immunology Research Program at the Oklahoma Medical Research Foundation in Oklahoma City, OK, USA, the Immunogenetic Laboratory of the Hospital de Clínicas José de San Martín at the Universidad de Buenos Aires in Buenos Aires, Argentina, the Shanghai Institute of Rheumatology at Renji Hospital, JiaoTong University School of Medicine in Shanghai, P.R. China, the Centre for Autoimmune Diseases Research (CREA) at the Universidad del Rosario-Corporación para Investigaciones Biológicas in Bogota, Colombia, the Rheumatology Unit of the Fundación Valle del Lili in Cali, Colombia and the Laboratory of Molecular Medicine at the Human Genome Centre of the Institute of Medical Science at the University of Tokyo, Japan.

To evaluate any connection between this single nucleotide polymorphism (SNP) with autoimmune diseases in non-European populations, the team compared case–control association between rs763361 and celiac disease (CED) samples from Argentina; SLE, RA, type-1 diabetes (T1D) and primary SS (pSS) from Colombia; and SLE samples from China and Japan.

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They then genotyped rs763361 and used 2-test to evaluate its genetic association with multiple auto-immune disorders. For each association, the team calculated odds ratio (OR) and 95% CI.

Their results show clearly that rs763361 shares a significant association with celiac disease in Argentina (P = 0.0009, OR = 1.60). They also noted indications of possible association with Chinese SLE (P = 0.01, OR = 1.19), RA (P = 0.047, OR = 1.25), SLE (P = 0.0899, OR = 1.24) and pSS (P = 0.09, OR = 1.33) in Colombians.

The team then conducted meta-analyses for SLE, using their three populations, and T1D, using their population together with three published populations. Those analyses showed a significant association with rs763361, P = 0.009 (OR = 1.16) and P = 1.1.46 x 10–9 (OR = 1.14), respectively.

The team's results show clearly that the coding variation rs763361 in the CD226 gene is associated with multiple auto-immune disorders in non-European populations.

Taken together, these studies show that the non-synonymous (Gly307Ser) variant, rs763361, in the CD226 gene carries a higher risk for multiple autoimmune diseases in both European Caucasian and non-European populations.


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1 Response:

 
Kathleen Walsh
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said this on
20 Jul 2010 5:28:07 AM PDT
Very informative!!




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Similarly, I've been vegetarian for 25+ years. A 2015 Nature study connecting emulsifiers with microbiome changes has me wondering about the processed foods that I ate in the past, and I wonder about the wisdom of eating as much seitan as I did. I mostly prefer my post-diagnosis diet since it forces me to consider every ingredient and to cook from scratch more.

LOL, that might put it into perspective if I explain it that way.

I am very interested in this too. My daughter tested negative for celiac, but has terrible primarily neurological symptoms. Because she tested positive for SIBO at the time and was having some GI symptoms, I was told it was just a Fodmap issue. I knew better and we have been gluten free for 2 years. Fast forward to this February. She had a SIBO recurrence that I treated at home with diet and herbal antibiotics because I couldn't get the insurance referral. She was doing great. Then stupid me brought in gluten containing chick feed for the new baby chicks we got. Feed dust everywhere. Total mess. Really, no GI symptoms (she was SIBO free by then)...but the neurological symptoms! my daughter couldn't walk for three days. Burning down one leg, nerve pain in the foot. Also heaviness of limbs, headache and fatigue. Better after three days. But unfortunately she had a TINY gluten exposure at that three day mark and had another severe reaction: loss of balance, loss of feeling in her back and arms, couldn't see for a few seconds, and three days of hand numbness, fatigue, concentration problems. Well, I actually contacted Dr. Hadjivassilou by email and he confirmed that the symptoms are consistent with gluten ataxia but any testing would require a gluten challenge. Even with these exposures, antibodies would not be high enough. His suggestion was maintain vigilance gluten free. I just saw my daughter's GI at U of C and she really only recognizes celiac disease and neurological complications of that. But my impression is that gluten ataxia is another branch in the autoimmune side of things (with celiac and DH being the other two). At this point, I know a diagnosis is important. But I don't know how to get there. We homeschool right now so I can give her time to heal when she is accidentally glutened, I can keep my home safe for her (ugh, that I didn't think of the chicken feed!) But at some point, she is going to be in college, needing to take exams, and totally incapacitated because of an exposure. And doctors state side that are worth seeing? Who is looking at gluten ataxia in the US?

Caro..............monitoring only the TSH to gauge thyroid function is what endo's do who don' t do a good job of managing thyroid disease. They should do the full panel and check the actual thyroid hormone numbers.........T3 and T4. The importance of the TSH comes second to hormone levels. In order to track how severely the thyroid is under attack, you need to track antibody levels.......not the TSH. I did not stay with endocrinologists because I found they did not do a very good job and found much greater help and results with a functional medicine MD. You should not have a goiter if your thyroid is functioning well and your TSH is "normal". Maybe they should do a full panel? Going gluten free can have a profound affect for the better on thyroid function and that is something that is becoming more and more accepted today. Ask most people with Celiac and thyroid disease and they will tell you that. My thyroid never functioned well or was under control under after I discovered I had Celiac and went gluten free. It was the only way I got my antibody numbers back down close to normal and they were around 1200 when it was diagnosed with Celiac. I was diagnosed with Hashi's long before the Celiac diagnosis. I am not sure Vitamin D has anything to do with thyroid antibodies but who knows? Maybe it does have an affect for the better. It is really hard to get Vitmain D levels up, depending on where you live. Mine are going up, slowly, even after 12 years gluten-free but I live in the Northeast in the US and we don't have sun levels like they do in the South. I take 5,000 IU daily and that is a safe level to take, believe it or not. I get no sun on my job so the large dose it is! Having Celiac Disease should not stop you from being able to travel, especially S. America. I travel, although I do agree that some countries might be very difficult to be gluten free in. You can be a foodie and travel with Celiac so no worries on that front. You may not be able to sample from someone else's plate, unless they are eating gluten-free too but I have had awesome experiences with food when traveling so you can too!

I don't know what you drank or where.... so here are a few thoughts. - sure, a dive bar might have dirty glasses and serve a cocktail in a beer glass? But a nice reminder place, with a dishwasher, should be fine. If it's a sketchy place, Stick to wine, then it's served in wine glasses that aren't used for beer or bottled ciders in the bottle. - ciders on tap might, just a slight chance, have an issue. Because of beer on tap, mixed up lines, etc. - you may have a problem with alcohol - you may have issues with The high sugar content of the drink. I know I have similar issues if I drink serveral ciders of extra sugary brands - are you positive it was a gluten-free drink? Not this " redds Apple" pretending to be a cider - it's beer with apple flavor. Or one of those " gluten removed " beers?