alexa Electron microscopic radioautographic study of the localization of an anti-allergic agent, Tranilast, in rat mast cells.


Anatomy & Physiology: Current Research

Author(s): Nishigaki T, Momose Y, Nagata T

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Abstract We have previously reported that Tranilast, an anti-allergic agent, was rapidly taken into the cytoplasm of rat mast cells in vitro by means of light microscopic radioautography. The present study was performed at the electron microscopic level to elucidate the fine localization of this agent in the mast cells. The results revealed that the number of radioautographic silver grains in the cells increased by the incubation with 3H-labelled Tranilast for 0 to 60 min. and that many silver grains were localized on the specific granules, especially on the perigranular membranes. These results suggest that the mode of inhibitory action of mast cell degranulation by Tranilast is related to the specific localization of this agent on the perigranular membranes.
This article was published in Cell Mol Biol and referenced in Anatomy & Physiology: Current Research

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