Salicylate inhibits thrombopoiesis in rat megakaryocytes by changing the membrane micro-architecture

Itsuro Kazama, Asuka Baba, Yasuhiro Endo, Hiroaki Toyama, Yutaka Ejima, Mitsunobu Matsubara, Masahiro Tachi

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Background/Aims: Salicylate causes drug-induced immune thrombocytopenia. However, some clinical studies indicate the presence of additional mechanisms in the drug-induced thrombocytopenia, by which the platelet production from megakaryocytes may directly be affected. Since salicylate is amphiphilic and preferentially partitioned into the lipid bilayers of the plasma membrane, it can induce some structural changes in the megakaryocyte membrane surface and thus affect the process of thrombopoiesis. Methods: Employing the standard patch-clamp whole-cell recording technique, we examined the effects of salicylate on the membrane capacitance in rat megakaryocytes. Taking electron microscopic imaging of the cellular surface, we also examined the effects of salicylate on the membrane micro-architecture of megakaryocytes. Results: Salicylate significantly decreased the membrane capacitance of megakaryocytes, indicating the decreased number of invaginated plasma membranes, which was not detected by the fluorescent imaging technique. As shown by electron microscopy, salicylate actually halted the process of pro-platelet formation in megakaryocytes. Conclusion: This study demonstrated for the first time that salicylate inhibits the process of thrombopoiesis in megakaryocytes, as detected by the decrease in the membrane capacitance. Salicylate-induced changes in the membrane micro-architecture are thought to be responsible for its effects.

本文言語English
ページ(範囲)2371-2382
ページ数12
ジャーナルCellular Physiology and Biochemistry
35
6
DOI
出版ステータスPublished - 2015 6 19

ASJC Scopus subject areas

  • 生理学

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