当前位置： SCI文献检索 > PHARMACOLOGICAL RESEARCH期刊下所有文献 > Selectivity of blocking of low- versus high-voltage activated calcium currents by the dihydropyridine derivatives Bay E5759 and Bay A4339 in neuroblastoma--glioma NG 108-15 cells.

Selectivity of blocking of low- versus high-voltage activated calcium currents by the dihydropyridine derivatives Bay E5759 and Bay A4339 in neuroblastoma--glioma NG 108-15 cells.

Abstract：

:Beneficial therapeutic effects of dihydropyridine derivatives in cardiovascular and neurological disorders are often associated with selective L-type Ca(2+)channel blockade. Here the new dihydropyridine derivatives Bay E5759 (1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid ethyl-1-methylethyl ester) and Bay A4339 (1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid dimethyl-ester) were tested for their potency and selectivity of blocking of Ba(2+)currents mediated by low-(LVACC)vs high-voltage activated Ca(2+)channels (HVACC) in neuroblastoma-glioma hybrid cells. Nisoldipine and mibefradil served as reference compounds. Bay E5759 and Bay A4339 blocked HVACC at low nanomolar concentrations, whereas LVACC was hardly reduced at up to 10 microM. The order of potency for blockade of HVACC was Bay E5759 (IC(50): 0.4 nM) > Bay A4339 (2.5 nM) approximately = nisoldipine (4 nM) > mibefradil (3.8 microM). Thus Bay E5759 and Bay A4339 are highly potent and selective blockers of HVACC, presumably L-type Ca(2+)channels.

journal_name

Pharmacol Res

journal_title

Pharmacological research

authors

Himmel HM,Stengel W,Ravens U

doi

10.1006/phrs.2001.0836

keywords:

subject

Has Abstract

pub_date

2001-08-01 00:00:00

pages

113-6

issue

2

eissn

1043-6618

issn

1096-1186

pii

S1043-6618(01)90836-9

journal_volume

44

pub_type

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