Extracellular N-acetylaspartylglutamate released in the nucleus accumbens modulates the pain sensation: Analysis using a microdialysis/mass spectrometry integrated system
AffiliationUniv Arizona, Dept Pharmacol, Arizona Hlth Sci Ctr
imaging mass spectrometry
in vivo microdialysis
MetadataShow full item record
PublisherSAGE PUBLICATIONS INC
CitationExtracellular N-acetylaspartylglutamate released in the nucleus accumbens modulates the pain sensation: Analysis using a microdialysis/mass spectrometry integrated system 2018, 14:174480691875493 Molecular Pain
Rights© The Author(s) 2018. Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons AttributionNonCommercial 4.0 License.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractVarious small molecules act as neurotransmitters and orchestrate neural communication. Growing evidence suggests that not only classical neurotransmitters but also several small molecules, including amino acid derivatives, modulate synaptic transmission. As conditions of acute and chronic pain alter neuronal excitability in the nucleus accumbens, we hypothesized that small molecules released in the nucleus accumbens might play important roles in modulating the pain sensation. However, it is not easy to identify possible pain modulators owing to the absence of a method for comprehensively measuring extracellular small molecules in the brain. In this study, through the use of an emerging metabolomics technique, namely ion chromatography coupled with high-resolution mass spectrometry, we simultaneously analyzed the dynamics of more than 60 small molecules in brain fluids collected by microdialysis, under both the application of pain stimuli and the administration of analgesics. We identified N-acetylaspartylglutamate as a potential pain modulator that is endogenously released in the nucleus accumbens. Infusion of N-acetylaspartylglutamate into the nucleus accumbens significantly attenuated the pain induced by the activation of sensory nerves through optical stimulation. These findings suggest that N-acetylaspartylglutamate released in the nucleus accumbens could modulate pain sensation.
NoteOpen access journal.
VersionFinal published version
SponsorsMEXT-Supported Program for the Strategic Research Foundation at Private Universities [S1411019]; JSPS [26293346, 16748651]
CollectionsUA Faculty Publications
- Ascorbate reduces morphine-induced extracellular DOPAC level in the nucleus accumbens: A microdialysis study in rats.
- Authors: Rajaei Z, Alaei H, Nasimi A, Amini H, Ahmadiani A
- Issue date: 2005 Aug 16
- N-methyl-D-aspartate receptor antagonism in the ventral tegmental area diminishes the systemic nicotine-induced dopamine release in the nucleus accumbens.
- Authors: Schilström B, Nomikos GG, Nisell M, Hertel P, Svensson TH
- Issue date: 1998 Feb
- The non-peptidic delta opioid receptor agonist TAN-67 enhances dopamine efflux in the nucleus accumbens of freely moving rats via a mechanism that involves both glutamate and free radicals.
- Authors: Fusa K, Takahashi I, Watanabe S, Aono Y, Ikeda H, Saigusa T, Nagase H, Suzuki T, Koshikawa N, Cools AR
- Issue date: 2005
- Implication of Rho-associated kinase in the elevation of extracellular dopamine levels and its related behaviors induced by methamphetamine in rats.
- Authors: Narita M, Takagi M, Aoki K, Kuzumaki N, Suzuki T
- Issue date: 2003 Jul
- 2-Chloro-N-[(S)-phenyl [(2S)-piperidin-2-yl] methyl]-3-trifluoromethyl benzamide, monohydrochloride, an inhibitor of the glycine transporter type 1, increases evoked-dopamine release in the rat nucleus accumbens in vivo via an enhanced glutamatergic neurotransmission.
- Authors: Leonetti M, Desvignes C, Bougault I, Souilhac J, Oury-Donat F, Steinberg R
- Issue date: 2006