N-Arachidonoyl l-Serine, a Putative Endocannabinoid, Alters the Activation of N-Type Ca2+ Channels in Sympathetic Neurons

Author:

Guo Juan,Williams Damian J.,Ikeda Stephen R.

Abstract

The effect of N-arachidonoyl l-serine (ARA-S), a recently discovered lipoamino acid found in the CNS, on N-type Ca2+ channels of rat sympathetic ganglion neurons was determined using whole cell patch clamp. Application of ARA-S produced a rapid and reversible augmentation of Ca2+ current that was voltage dependent and resulted from a hyperpolarizing shift in the activation curve. ARA-S did not influence G protein modulation of Ca2+ channels and appeared to act independently of G-protein-coupled receptors. These findings provide a foundation for investigating possible roles for ARA-S in nervous system function.

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

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