Current Hypertension Reviews

Prof. Kazuomi Kario
Jichi Medical University
School of Medicine
Tochigi
Japan

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New Generation Calcium Channel Blockers in Hypertensive Treatment

Author(s): Yuri Ozawa, Koichi Hayashi, Hiroyuki Kobori.

Abstract:

During a couple of decades, a number of antihypertensive drugs have been developed, and the choice of hypertension treatment has been expanded. Among antihypertensive drugs, calcium channel blockers, which inhibit Ltype voltage-gated calcium channels, are potent vasodilators, and have been used as a first- or second-line drug. Dihydropyridine-class calcium channel blockers are categorized into three generations according to the length of activity, and long-acting calcium channel blockers cause less activation of sympathetic nervous system, and are reported to offer beneficial action compared with short-action agents. Furthermore, novel types of calcium channel blockers have been developed that possess the blocking action on other calcium channel subtypes (T- and N-type), and exert agent-specific action apart from their class effects, such as the effects on heart rate and renin/aldosterone release. These additional benefits conferred by T/N-type calcium channel blockade are anticipated to provide organ protective actions in the treatment of hypertension, in addition to the blood pressure-lowering effect of L-type calcium channel blockade. In conclusion, novel calcium channel blockers with sustained activity and T/N-type calcium channel blocking action could provide more beneficial effects than classical blockers, and may expand the clinical utility of these agents.

Keywords: N-type calcium channels, T-type calcium channels, tachycardia, heart failure, renal protection

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Article Details

VOLUME: 2
ISSUE: 2
Year: 2006
Page: [103 - 111]
Pages: 9
DOI: 10.2174/157340206776877370
Price: $58