31 research outputs found

    Effect of Kampo medicine “Dai-kenchu-to” on microbiome in the intestine of the rats with fast stress

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    [Purpose] Diversity of gut microbiome has been recently reported to be lost in inflammatory bowel disease. We have previously reported that the Dai-kenchu-to (DKT) prevented the bacterial translocation through suppression of cytokine and apoptosis in rat’s fast stress model. The aim of this study was to evaluate the effect of DKT on maintenance of microbial diversity in rat’s intestine with inflammation. [Method] Wister rats were received the fast stress for 5 days. In DKT group, rats were administered with DKT (300 mg/kg/day) during the fast stress (DKT-group). The gut microbiomes were analyzed at before- and after- fast stress, and the effect of DKT for on microbial diversities of the gut were evaluated by the PCR-clone library method targeting the 16 S ribosomal RNA gene. [Result] In Control-group, Erysipelotrichaceae increased to 86% in after fast stress, OTU of before-fast stress was 111 and after fast stress was only 9 (changing rate : 58%). The diversity of microbiome was severely decreased. On the other hand, in DKT-group, diversity of microbiome was kept after fast stress (Lachnospiraceae : Ruminococcaceae : Coriobacteriales 54%, 22%, 5%), Operational taxonomic units of before fast stress was 52 and after fast stress was 55 (changing rate : 6%). Family Lachnospiraceae which includes butyrate-producing Clostridia (Clostridium IV and XIVa). [Conclusion] DKT prevented the reduction of diversity of microbiome in rat’s fast stress model. Our data suggested the new anti-inflammatory mechanism of DKT through gut microbiome

    Prospective study of atopic status in infants of the cohort in Tokyo, Japan

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    Several risk factors for the development of allergic diseases are considered including, for example, the level of IgE in cord blood or in the peripheral blood of neonates and the antigenic effect of some foods that are ingested by both babies and mothers during pregnancy and during the lactation period. However, not all infants with atopic diathesis develop allergic diseases. To clarify the risk factors and the mechanism for developing allergic diseases, particularly bronchial asthma (BA), we prospectively investigated atopic diatheses and symptoms in children in a cohort using a questionnaire method. The factors correlated to development of allergic diseases, as a whole, at the age of 5–6 years were atopic family history and any allergic symptom at 4 months of age. However, not all subjects with atopic dermatitis developed BA later on. High levels of total IgE and positive IgE antibody against egg white were not risk factors for developing BA at the age of 5–6 years
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