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Specific probiotics alleviate allergic rhinitis during the birch pollen season

World Journal of Gastroenterology 2009年第26期15卷 3261-3268页

作者： Arthur C Ouwehand Merja Nermes Maria Carmen Collado Nina Rautonen Seppo Salminen Erika Isolauri Health & Nutrition Danisco Finland Department of Pediatrics Turku University Hospital Functional Foods Forum Turku University

AIM： To investigate whether birch pollen allergy symptoms are linked with gut microbiota changes and whether probiotics have an effect on these. METHODS： Forty seven children with confirmed birch pollen allergy were randomized to receive either a probiotic combination of lactobacillus acidophilus （L. acidophilus） NCFM^TM （ATCC 700396） and Bifidobacterium lactis （B. lactis） BI-04 （ATCC SD5219） or placebo in a double-blind manner for 4 mo, starting prior to onset of the birch pollen season. Symptoms were recorded in a diary. Blood samples were taken for analysis of cytokines and eosinophils. Fecal samples were analysed for microbiota components, calprotectin and IgA. Nasal swabs were taken for analysis of eosinophils.RESULTS： The pollen season induced a reduction in Bifldobacterium , Clostridium and Bacteroides which could not be prevented by the probiotic intervention. During the intervention, significantly higher numbers ofB. lactis 11.2 × 10^7 ± 4.2 ×10^7 vs 0.1 × 10^7 ± 0.1 × 10^7 bacteria/g feces （P 〈 0.0001） and L. acidophilus NCFMTM 3.5 × 10^6 ± 1.3 × 10^6 vs 0.2 × 10^6 ±0.1 × 10^6 bacteria/g feces （P 〈 0.0001） were observed in the probiotic group compared to the placebo *** May, there was a tendency for fewer subjects, （76.2% vs 95.2%, P = 0.078） to report runny nose, while during June, fewer subjects, 11.1% vs 33.3%, reported nasal blocking in the probiotics group （P = 0.101）. Concomitantly, fewer subjects in the probiotic group had infiltration of eosinophils in the nasal mucosa compared to the placebo group, 57.1% vs 95% （P = 0.013）. Eye symptoms tended to be slightly more frequent in the probiotic group, 12.5 d [interquartile range （IQR） 6-18] vs 7.5 d （IQR 0-11.5）（P = 0.066） during May. Fecal IgA was increased in the placebo group during the pollen season; this increase was prevented by the probiotics （P = 0.028）. CONClusION： Birch pollen allergy was shown to be associated with changes in fecal microbiota composition. The specific combinat

关键词： Probiotics Pollen allergy Intestines Microbiology Immunity Eosinophilia lactobacillus acidoph/lus Bil^dobacterium lactis

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