当前位置： SCI文献检索 > EXPERIMENTAL NEUROLOGY期刊下所有文献 > The L-amino acid carrier inhibitor 2-aminobicyclo[2.2.1]heptane-2-carboxylic acid (BCH) reduces L-dopa-elicited responses in dopaminergic neurons of the substantia nigra pars compacta.

The L-amino acid carrier inhibitor 2-aminobicyclo[2.2.1]heptane-2-carboxylic acid (BCH) reduces L-dopa-elicited responses in dopaminergic neurons of the substantia nigra pars compacta.

Abstract：

:It is not yet clear how L-dopa, that is the most effective drug for the treatment of Parkinson's disease, enters into the dopaminergic neurons to be transformed into dopamine. It is suggested that L-dopa is mainly transported into cells by a group of L-amino acid carriers named "System L". Since these carriers are selectively inhibited by 2-aminobicyclo[2.2.1]heptane-2-carboxylic acid (BCH), we have applied this compound to electrophysiologically recorded dopaminergic neurons of the rat substantia nigra pars compacta to examine the possible modulation of the effects of L-dopa by System L. We have observed that BCH reduced, in a concentration-dependent manner, the membrane hyperpolarization/outward current caused by L-dopa. Interestingly, the actions of dopamine were not changed by this System L inhibitor, suggesting that the reducing effects on L-dopa are not due to a BCH-induced unspecific block of dopamine-mediated events. Therefore, our electrophysiological data that an l-type amino acid carrier, possibly System L, is involved in the transport of L-dopa into dopaminergic neurons.

journal_name

Exp Neurol

journal_title

Experimental neurology

authors

Sebastianelli L,Ledonne A,Marrone MC,Bernardi G,Mercuri NB

doi

10.1016/j.expneurol.2008.04.005

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

230-3

issue

1

eissn

0014-4886

issn

1090-2430

pii

S0014-4886(08)00153-2

journal_volume

212

pub_type

杂志文章

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