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Science. 1988 Apr 8;240(4849):213-5.

Amiloride selectively blocks the low threshold (T) calcium channel.

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  • 1University of Pennsylvania, Department of Physiology, Philadelphia 19104-6085.

Abstract

More than one type of voltage-gated calcium channel has been identified in muscle cells and neurons. Many specific organic and inorganic blockers of the conventional, slowly inactivating high threshold (L) calcium channel have been reported. No specific blockers of the low threshold (T) channel have been as yet identified. Amiloride, a potassium sparing diuretic, has now been shown to selectively block the low threshold calcium channel in mouse neuroblastoma and chick dorsal root ganglion neurons. The selective blockade of the T-type calcium channel will allow identification of this channel in different tissues and characterization of its specific physiological role.

PMID:
2451291
[PubMed - indexed for MEDLINE]
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