Some other way to do it, for the benefit of everyone:
Dietary fructooligosaccharides induce immunoregulation of intestinal IgA secretion by murine Peyer's patch cells.
Hosono A1, Ozawa A, Kato R, Ohnishi Y, Nakanishi Y, Kimura T, Nakamura R.
Gist:
Mice were put on a diet from zero to 7.5% fructooligosaccharides. For context, those would be medium-sized sugary molecules in agave, chicory root, bananas, onions, leeks, garlic, Jerusalem artichoke and yacon.
In a diet containing 2.5% FOS, fecal IgA was already significantly increased. IgA secretion in Peyer's patches (intestines) was also up in a dose-dependent manner. CD4+ T cell production increased as well, and so did interferon-gamma, and interleukins 10, 5, and 6.
FOS did suppress IgG1 production.
The overall effect is suppression of the systemic immune response to become more type 2 helper T (Th2) dominant.
In mice, lest we forget; but at least in this study, the FOS amount isn't completely ridiculous. A woman who eats the number of calories/grams of stuff that I do could eat 5-g of fructooligosaccharides to reach the lowest dose described in this study. This is good news because it's been shown that we as a population might have an issue with excessive FOS.
Encapsulated Bifidobacterium bifidum potentiates intestinal IgA production.
Park JH1, Um JI, Lee BJ, Goh JS, Park SY, Kim WS, Kim PH.
Gist:
Bifidobacterium bifidum increased total IgA and IgM synthesis by lymph nodes and Peyer's patches (in the intestine, IOW). Taking this probiotic made mice increase all Ig-secreting cells in mesenteric lymph nodes and spleen. However, it did not induce an immune response against itself. Interestingly, they found that the mechanism has to do with parts of the
B. bifidum's cells rather than any particular activity the bacteria performs.
Again, mice, so. Be aware of that.
Lactobacilli and Bifidobacteria enhance mucosal B cell responses and differentially modulate systemic antibody responses to an oral human rotavirus vaccine...
Sukumar Kandasamy, Kuldeep S Chattha, Anastasia N Vlasova, Gireesh Rajashekara, and Linda J Saif
Gist: The researchers treated pigs with these probiotics and then gave them a rotavirus vaccine. Pigs with the probiotics had a better intestinal IgA response, higher IL-6, IL-10 and APRIL responses of ileal mononuclear cells, and the immunomodulatory effects of probiotics genomic DNA on TGF-β and IL-10 responses.
Serum rotavirus IgG antibody titers and total IgG titers were significantly lower in probiotic-colonized vaccinated pigs compared to uncolonized, vaccinated pigs, both pre- and post-vaccination.
Basically, it's saying that these probiotics give you an overall healthier response to an immune challenge via a virus. If you are a pig.
[Intestinal flora, probiotics and effects on the intestinal IgA immune response].
(If you can read French)
Moreau MC1.
Effect of Lactobacillus pentosus ONRIC b0240 on intestinal IgA production in mice fed differing levels of protein.
Shimosato T1, Tomida K, Otani H.
Gist: the protein amount didn't matter, everyone's IgA went up. B cells and Th2 cells also went up, but this part of the experiment was in vitro.
And in mice.
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I hope this is helpful, guys. Remember to apply the interleukin-y stuff to Hornig et al.'s work: if you are early in the illness vs 3+ years, you may want to increase or decrease different ILs.
-Jaime