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Mu Opioid Receptor A118G Polymorphism in Association with Striatal Opioid Neuropeptide Gene Expression in Heroin Abusers

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Specialty Science
Date 2006 May 10
PMID 16682632
Citations 63
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Abstract

Mu opioid receptors are critical for heroin dependence, and A118G SNP of the mu opioid receptor gene (OPRM1) has been linked with heroin abuse. In our population of European Caucasians (n = 118), approximately 90% of 118G allelic carriers were heroin users. Postmortem brain analyses showed the OPRM1 genotype associated with transcription, translation, and processing of the human striatal opioid neuropeptide system. Whereas down-regulation of preproenkephalin and preprodynorphin genes was evident in all heroin users, the effects were exaggerated in 118G subjects and were most prominent for preproenkephalin in the nucleus accumbens shell. Reduced opioid neuropeptide transcription was accompanied by increased dynorphin and enkephalin peptide concentrations exclusively in 118G heroin subjects, suggesting that the peptide processing is associated with the OPRM1 genotype. Abnormal gene expression related to peptide convertase and ubiquitin/proteosome regulation was also evident in heroin users. Taken together, alterations in opioid neuropeptide systems might underlie enhanced opiate abuse vulnerability apparent in 118G individuals.

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References
1.
Shippenberg T, Herz A . Involvement of central mu and delta opioid receptors in mediating the reinforcing effects of beta-endorphin in the rat. Eur J Pharmacol. 1990; 175(1):63-9. DOI: 10.1016/0014-2999(90)90153-w. View

2.
Hurd Y, Herkenham M . The human neostriatum shows compartmentalization of neuropeptide gene expression in dorsal and ventral regions: an in situ hybridization histochemical analysis. Neuroscience. 1995; 64(3):571-86. DOI: 10.1016/0306-4522(94)00417-4. View

3.
Nylander I, Stenfors C, Tan-No K, Mathe A, Terenius L . A comparison between microwave irradiation and decapitation: basal levels of dynorphin and enkephalin and the effect of chronic morphine treatment on dynorphin peptides. Neuropeptides. 1997; 31(4):357-65. DOI: 10.1016/s0143-4179(97)90072-x. View

4.
Bart G, Heilig M, LaForge K, Pollak L, Leal S, Ott J . Substantial attributable risk related to a functional mu-opioid receptor gene polymorphism in association with heroin addiction in central Sweden. Mol Psychiatry. 2004; 9(6):547-9. PMC: 6141020. DOI: 10.1038/sj.mp.4001504. View

5.
Van Bockstaele E, Sesack S, Pickel V . Dynorphin-immunoreactive terminals in the rat nucleus accumbens: cellular sites for modulation of target neurons and interactions with catecholamine afferents. J Comp Neurol. 1994; 341(1):1-15. DOI: 10.1002/cne.903410102. View