Studies on anti-allergic activity of Sargassum horneri extract

Autor: Hisashi Yoshioka, Momoko Ishida, Kosuke Nishi, Hiroshi Oda, Haruhiko Toyohara, Takuya Sugahara
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Journal of Functional Foods, Vol 10, Iss , Pp 154-160 (2014)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2014.06.002
Popis: Chlorophyll c2 in a Sargassum horneri extract suppressed the degranulation of rat basophilic leukaemia RBL-2H3 cells. In this contribution, the mode of action of S. horneri extract was revealed. The extract inhibited the elevation of intracellular Ca2+ concentration induced by the antigen. Immunoblot analysis showed that S. horneri extract down-regulated the phosphorylation of both Syk and PI3K in the signalling pathways involved in degranulation triggered by antigen–antibody interaction. In addition, oral administration of S. horneri extract inhibited mice nasal rubbing behaviour sensitized with anti-DNP IgE. These findings suggest that S. horneri extract has anti-allergic activity via the suppression of degranulation of mast cells and basophils.
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