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Abstract Title:

Effect of Lactobacillus rhamnosus GG and vitamin D supplementation on the immunologic effectiveness of grass-specific sublingual immunotherapy in children with allergy.

Abstract Source:

Allergy Asthma Proc. 2016 Jul ;37(4):324-34. PMID: 27401319

Abstract Author(s):

Joanna Jerzynska, Wlodzimierz Stelmach, Joanna Balcerak, Katarzyna Woicka-Kolejwa, Blazej Rychlik, Andrzej Blauz, Marcin Wachulec, Piotr Stelmach, Pawel Majak, Iwona Stelmach

Article Affiliation:

Joanna Jerzynska

Abstract:

BACKGROUND: An important issue in sublingual immunotherapy (SLIT) is how to improve efficacy.

OBJECTIVE: To compare the clinical and immunologic efficacy of SLIT given alone and, to enhance clinical efficacy, given with probiotic or vitamin D supplementation.

METHODS: One hundred children, ages 5-12 years, sensitive to grass pollen, with allergic rhinitis participated in a 5-month prospective, randomized, double-blind, placebo-controlled trial. Children received 5-grass SLIT 300 IR tablets with either vitamin D 1000 IU daily supplementation, probiotic, or placebo. The control group included children with allergy who did not qualify for immunotherapy. Primary end points included a symptom-medication score, lung function, and exhaled nitric oxide concentration. The secondary end point was the immunologic efficacy measured by the following: CD4(+)CD25(+)Foxp3(+) (forkhead box P3) cells, Toll-like receptor (TLR) 4, interleukin (IL) 1, IL-6, tumor necrosis factor, IL-10, and transforming growth factorβ-1 levels in cell culture supernatants.

RESULTS: Reduction in the symptom-medication score and improvement in lung function as well as a significant increase in the percentage of CD4(+)CD25(+)Foxp3(+) in children who received SLIT in all the groups were observed compared with control group. In the SLIT-probiotic group, between-group analysis showed significantly higher CD4(+)CD25(+)Foxp3(+) induction compared with the SLIT group and higher reduction in the percentage of TLR-positive cell group compared with the SLIT-vitamin D group (Fig. 1). An increase in CD4(+)CD25(+)Foxp3(+) induction, reduction in TLR-positive cells recruitment and an increase in transforming growth factorβ-1 production were independently associated with a better clinical effect of SLIT in children.

CONCLUSIONS: We demonstrated the clinical and immunologic effect of probiotic and vitamin D supplementation on SLIT. Probiotic supplementation showed better clinical and immunologic response in children with allergic rhinitis.

Study Type : Human Study

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