Title : Reducing agents sensitize C-type nociceptors by relieving high-affinity zinc inhibition of T-type calcium channels.

Pub. Date : 2007 Aug 1

PMID : 17670971






2 Functional Relationships(s)
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1 Here, we demonstrate that reducing agents as well as endogenous metal chelators sensitize C-type dorsal root ganglion nociceptors by chelating Zn2+ ions off specific extracellular histidine residues on Ca(v)3.2 T-channels, thus relieving tonic channel inhibition, enhancing Ca(v)3.2 currents, and lowering the threshold for nociceptor excitability in vitro and in vivo. Metals immunoglobulin lambda variable 7-43 Homo sapiens
2 Here, we demonstrate that reducing agents as well as endogenous metal chelators sensitize C-type dorsal root ganglion nociceptors by chelating Zn2+ ions off specific extracellular histidine residues on Ca(v)3.2 T-channels, thus relieving tonic channel inhibition, enhancing Ca(v)3.2 currents, and lowering the threshold for nociceptor excitability in vitro and in vivo. Metals immunoglobulin lambda variable 7-43 Homo sapiens