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Review
. 2008 Jul;8(8):812-9.
doi: 10.2174/138955708784912166.

Non-selective cation channel blockers: potential use in nervous system basic research and therapeutics

Fernando Peña  1 , Benito Ordaz
Affiliations
Review

Non-selective cation channel blockers: potential use in nervous system basic research and therapeutics

Fernando Peña et al. Mini Rev Med Chem. 2008 Jul.

Abstract

Non-selective cationic channels (NSCC) are a heterogeneous family of channels, widely expressed in non-excitable and excitable cells, that share several functional characteristics but have diverse molecular origin. NSCC can be formed by transient receptor potential (TRP) channels, calcium activated non-selective channels, hyperpolarization activated cation currents, acid-sensitive cationic channels (ASIC), etc. As a result of its wide expression, as well as to the fact that the activation of such currents produce a persistent membrane depolarization, NSCC have been involved in a variety of neuronal processes such as signal transduction, firing pattern (including plateau potentials and bursting mechanisms) as well as synaptic transmission. Due to the relevance of such channels, alterations in their normal function have been associated with the pathophysiology of several nervous system diseases. Over the last years several blockers of such channels have been discovered. Here we review the pharmacology of NSCC blockers including trivalent cations, verapamil derivates, flufenamic acid, the "typical" TRP blockers 2-APB, ACA and SKF 96365 as well as ASIC blockers. This review focuses on the pharmacological properties of such drugs and their potential use for the understanding of the nervous system as well as for the treatment of neurological diseases.

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