alexa Blockage Of System Xc- Improves Cocaine Addiction In Cocaine-dependence Mice
ISSN: 2155-9562

Journal of Neurology & Neurophysiology
Open Access

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11th World Congress on Neurology and Therapeutics
March 27-29, 2017 Madrid, Spain

Vivian Hsu
China Medical University, Taiwan
ScientificTracks Abstracts: J Neurol Neurophysiol
DOI: 10.4172/2155-9562.C1.046
Abstract
The cystine-glutamate antiporter or system xc- is a membrane-bound Na+-independent amino acid transporter which exchanges intracellular glutamate for extracellular cysteine. Previous studies have shown that activation of system xc- by its activator N-acetylcysteine (NAC) inhibits reinstated cocaine or nicotine seeking behaviors. In addition, the expression of system xc- subunit xCT in brain was up-regulated in cocaine dependence mice, but down-regulated in cocaine withdrawal mice, suggesting a dynamic change in xCT expression and its activity during addiction. Unfortunately, system xc- is not the only target for NAC and all pharmacological inhibitors commonly used to study system xc- activity have off-target effects. These issues raise the uncertain role of system xc- in addiction. In this study, we tested xCT knockout (xCT-/-) mice for dependence-induced drinking using the chronic intermittent cocaine-two bottle choice drinking protocol. There was significant inhibition in daily cocaine consumption in xCT-/- mice during free-choice drinking as compared to wild type (WT) mice, indicating genetic deficiency of system xc- blocked cocaine dependence. Moreover, sulfasalazine (SAS), the US Food and Drug Administration (FDA) that ă„“blocks system xc-, significantly attenuated the daily cocaine consumption during free-choice drinking in cocaine-dependence mice as compared to control vehicle (DMSO). Taken together, these findings show blockage of system xc- improves cocaine addiction in cocaine dependence-mice. Inhibition of system xc- represents a new class of therapeutics against cocaine addiction.
Biography

Vivian Hsu is currently obtaining her Master’s Degree at China Medical University. She opts to apply for Doctorate studies in the future. She is a student of Professor Chia-Hung Hsieh who has published more than 10 research papers in notable journals. He is currently researching on therapeutics for cocaine addictions with a plan to go into clinical trials.

Email: [email protected]

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