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- W798726070 abstract "Objectives : In the present study, the author intended to investigate Gagam-jeonggitang(GJT), Gami-hwajeongjeon(GHJ) and Gami-tonggyutang(GTT) significantly affect in vivo and in vitro mucin secretion from airway epithelial cells. Methods : In vivo experiment, the author induced hypersecretion of airway mucin, hyperplasia of tracheal goblet cells and the increase in intraepithelial mucosubstances by exposing rats to SO2 during 3 weeks. Effects of orally-administered GJT, GHJ and GTT during 1 week on in vivo mucin secretion and hyperplasia of tracheal goblet cells were assesed using ELISA and staining goblet cells with alcian blue. For in vitro experiment, confluent HTSE cells were metabolically radiolabeled with 3H-glucosamine for 24 hrs and chased for 30 min in the presence of each agent to assess the effects of each agent on 3H-mucin secretion. Possible cytotoxicities of each agent were assessed by measuring lactate dehydrogenase release. Also, the effects of each agent on contractility of isolated tracheal smooth muscle and effects of each agent on MUC5AC gene expression in cultured HTSE cells were investigated. Results : GJT, GHJ and GTI inhibited hypersecretion of in vivo mucin: GJT and GHJ inhibited the increase of number of goblet cells. However, GTT did not affect the increase of number of goblet cells; GJT and GTT significantly increased mucin secretion from cultured HTSE cells, without significant cytotoxicity. GHJ increased mucin secretion and showed mild cytotoxicity at the highest concentration: GJT, GHJ and GTT chiefly affected the 'mucin' secretion; GJT, GHJ and GTT did not affect Ach-induced contraction of isolated tracheal smooth muscle; GTT did not significantly affect the expression levels of MUC5AC gene. However, GJT significantly. inhibit the expression levels of MUC5AC gene and GHJ significantly increased the expression levels of MUC5AC gene. These results suggest that GJT, GHJ and GTI can increase mucin secretion during short-term treatment(in vitro), whereas it can inihibit hypersecretion of mucin during long-term treatment(in vivo) and GJT and GHJ can not only affect the secretion of mucin but also affect the expression of mucin gene. Conclusions : The author suggests that the effects GJT, GHJ and GTT with their components should be further investigated and it is valuable to find, from oriental medical prescriptions, novel agents which might regulate hypersecretion of mucin from airway epithelial cells." @default.
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- W798726070 date "2007-01-01" @default.
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- W798726070 title "Effects of Gagam-jeonggitang, Gami-hwajeongjeon and Gami-tonggyutang on secretion of airway mucus In Vitro and In Vivo" @default.
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