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Gluten Influences Gut Microbial Activity in People Without Celiac Disease

Celiac.com 02/24/2014 - What kind of impact does gluten have in on the microbial gut activity of healthy people without celiac disease? A team of researchers set out to answer that question by studying the metabolism of gluten in healthy individuals, and the effects of gluten on their intestinal microbial activity.

Photo: CC--Hans DekkerThe research team included A. Caminero, E. Nistal, L. Arias, S. Vivas, I. Comino, A. Real, C. Sousa, J.M. de Morales, M.A. Ferrero, L.B. Rodríguez-Aparicio, and J. Casqueiro, all with the Área de Microbiología at the Universidad de León in León, Spain.

The team analyzed fecal samples from eleven healthy subjects under four different diet regimens: a normal gluten diet, a strict gluten-free diet (GFD), a GFD with a supplemental intake of 9 g gluten/day and a GFD with a supplemental intake of 30 g gluten/day.

In each case, they measured gluten content, fecal tryptic activity (FTA), short-chain fatty acids (SCFAs) and fecal glutenasic activity (FGA). Fecal gluten contents, FTA, SCFAs and FGA varied sharply, according to levels of dietary gluten intake.

When patients received high gluten doses, over 30 grams per day, they showed sharply higher SCFA concentrations of around 70.5 mmoles per kg of feces, compared with concentrations of around 33.8 mmoles per kg feces during the gluten-free phase of the experiment.

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However, the FTA showed significant differences between the GFD (34 units) and the normal gluten-containing diet (60 units), and also between the GFD and the GFD + 30 g of gluten/day (67 units).

In every case, when patients regularly consumed gluten, gluten was detected in the feces. This demonstrates that at least a portion of the ingested gluten is eliminated in the large intestine, thus offering a substrate for intestinal microbial proteases.

The results also showed that fecal glutenasic activity increased proportionally with dietary gluten, showing an enzymatic activity of 993 units in DSG, 2,063 units in DSG + 9 g and 6,090 units in DSG + 30 g.

Gluten consumption definitely influences the activity of intestinal microbes, and also increases gluten proteolytic activity in the feces of healthy, non-celiac individuals. Undoubtedly, more research needs to be done to determine what, exactly these findings mean for the study of celiac disease. 

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2 Responses:

 
R &K
Rating: ratingfullratingemptyratingemptyratingemptyratingempty Unrated
said this on
03 Mar 2014 6:12:00 AM PDT
Only celiacs with a doctorate in chemistry would understand everything this article reveals. Couldn't you have it translated into layman's language, so the average celiac would gain insight from it!

 
admin
( Author)
said this on
05 Mar 2014 4:32:35 PM PDT
We do include a glossary of terms so that you can click on items that are triple underlined to see the definition. Keep reading the articles, and eventually the lingo will won't seem so difficult to understand. There is no easy way to summarize scientific research.




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So, here goes...my visit with the GI specialist is on Monday. I had tested positive for the IGG antibody and all other bloodwork was negative. I had numerous trips to emerg with stomach pain, lower back pain, tingly tummy, and diarrhea with alternating "c" (I had the word constipation). One diagnosis of diverticulitis, another of IBS, and symptoms continued to get worse....Low B12 for 7 years and abnormal liver (something like hepatocellular disease with cirrhosis). I only have a glass of wine on the weekends...I had been diagnosed in my early 30s with IBS and imodium helped. I also had a rash on my elbows and back and that is when my new GP said maybe it is celiac and she sent me for bloodwork and 3 months later finally get to see the GI specialist. I went gluten free and at first it was hard. It is much easier now...I think at time I give myself contamination because I get some bouts of pain on occasion and I take buscopan and immodium and then I am fine....I am 100% convinced I have celiac but I guess I really do not understand how the rest of the panel would be negative... The rash, the GI symptoms, the B12, and the liver issue all paint a compelling picture...I never thought I would say this but I hope it is truly diagnosed because then I can move forward with a plan. I am down 22 pounds and back at the gym very hard and feeling almost normal for the first time in many years....I also find is so strange that my "gluten" attack usuallys starts with a pins and needs tingly sensation in my back and tummy...I have written a full history and have copies of all my test results so the GI specialist takes me seriously...I read his reviews and they are not good....I understand I will have to do gluten before the endoscopy but that fine...just looking forward to this being partly over...Have a great day!

http://www.cureceliacdisease.org/faqs/ You can also find lots of information on celiac at the University of Chicago celiac site. One test they suggest is the anti EMA antibodies. I don't see that one listed in her results. Probably because it is more expensive to do. So they may have skipped it. The other test they usually do is the total serum IGA levels, which is used to prove that the person's immune system actually makes IgA antibodies. Some people don't make IgA antibodies, so the IgA tests are useless in them. It looks to me like she makes IgA though, if this is the serum IgA result. IgA 133 mg/dl Reference range 33-200 There are also gene tests they can do. The genes indicate the possibility of developing celiac disease, not the automatic presence of celiac disease. About 30% of people in the USA have one of the genes for celiac disease, but only about 1% develop celiac disease. Some of the celiac genes are associated with other autoimmune conditions besides celiac disease. So there are lists of AI associated conditions with celiac disease. Sometimes called related conditions. http://www.drschaer-institute.com/us/celiac-disease/associated-conditions-1051.html

Blood was drawn this afternoon... they said I could get results tomorrow or even the next day! I also have a GI appt scheduled for June 9th. I am so glad I will have at least some kind of answer pretty soon. I'll let you all know. Thanks again for being so helpful!

Thank you so much for those links, I will check into it. Her pediatrician told me this afternoon she is wanting to repeat the bloodwork since that one test was elevated. I'm relieved that her pediatrician didn't dismiss it like the other dr in the practice did.

http://www.houstonceliacs.org/ https://www.csaceliacs.org/csa_chapter_25.jsp You can check with these groups to see if they recommend any doctors in Houston.