Effects of Bifemelane on the Calcium Level and ATP Release of the Human Origin Astrocyte Clonal Cell
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- Yoshida Yoshitoku
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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- Kumagai Haruno
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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- Ohkubo Yoshiumi
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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- Tsuchiya Remi
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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- Morita Mitsuhiro
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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- Miyakawa Hiroyoshi
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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- Kudo Yoshihisa
- School of Life Science, Tokyo University of Pharmacy and Life Science, Japan
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The effect of bifemelane hydrochloride (bifemelane) was examined on human origin astrocyte clonal cells (Kings-1). Bifemelane (125 – 1000 μM) induced a dose-dependent increase in the intracellular calcium concentration ([Ca2+]i). In the highest concentration (1000 μM), the drug caused the second large increase in [Ca2+]i during the washing. The increase that occurred during the administration partially remained in the Ca2+-free medium and was blocked by 2-aminoethoxydiphenyl borate (2-APB), an IP3-receptor blocker, indicating that the source of Ca2+ for the increase could be ascribed to the intracellular store. The increase in [Ca2+]i was not observed during washing with Ca2+-free medium, but was observed when the washing was performed with Ca2+-containing medium. Bifemelane caused a dose-dependent ATP release, but histamine and carbachol, which induced a large increase in [Ca2+]i, had no effects on the ATP release. The effects on the [Ca2+]i were blocked by pretreatment with pyridoxal phosphate-6-azophenyl-2',4' disulfonic acid, a P2-receptor antagonist. Although the mechanisms of ATP release induced by the drug have not been elucidated yet, the present results demonstrate that the increase in [Ca2+]i induced by bifemelane is not due to its direct effect on the cells, but is dependent upon the ATP released from the cells.<br>
収録刊行物
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- Journal of Pharmacological Sciences
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Journal of Pharmacological Sciences 102 (1), 121-128, 2006
公益社団法人 日本薬理学会
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詳細情報 詳細情報について
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- CRID
- 1390282680153958272
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- NII論文ID
- 10020346475
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- NII書誌ID
- AA11806667
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- COI
- 1:CAS:528:DC%2BD28XhtVOmtLrP
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- ISSN
- 13478648
- 13478613
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- NDL書誌ID
- 8065111
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可