PMID- 15542732 OWN - NLM STAT- MEDLINE DCOM- 20050218 LR - 20220316 IS - 0077-8923 (Print) IS - 0077-8923 (Linking) VI - 1025 DP - 2004 Oct TI - Gene polymorphisms of the mu opioid receptor in methamphetamine abusers. PG - 316-24 AB - In drug addiction, the opioid system is thought to mediate motivational effects through dopamine-independent mechanisms. We have investigated associations of the mu-opioid receptor gene (OPRM) variations with methamphetamine (MAP) dependence/psychosis. The allelic frequency of A118G (Asn40Asp) in exon 1 of ORPM was 45.3% in our control subjects, but only 7.5-25.8% in the Caucasian or African-American population of previous studies. We have identified several novel polymorphisms in intron 1 and the 5' untranslated region (5'UTR) of OPRM. Polymorphisms in the functionally relevant 5' regulatory region of OPRM were different in our Japanese population from Caucasian or African-American populations. No significant differences between controls and MAP abusers were found in either genotype or allele frequency at any single nucleotide polymorphism (SNP) or (AC)n dinucleotide repeat in intron 1. A subdivision of our MAP group revealed that A118G of OPRM shows a significant association with MAP psychosis having latency less than three years. Further analysis should be capable of identifying associations between the OPRM variations and MAP dependence/psychosis. FAU - Ide, Soichiro AU - Ide S AD - Department of Molecular Psychiatry, Tokyo Institute of Psychiatry, Japan. FAU - Kobayashi, Hideaki AU - Kobayashi H FAU - Tanaka, Keiko AU - Tanaka K FAU - Ujike, Hiroshi AU - Ujike H FAU - Sekine, Yoshimoto AU - Sekine Y FAU - Ozaki, Norio AU - Ozaki N FAU - Inada, Toshiya AU - Inada T FAU - Harano, Mutsuo AU - Harano M FAU - Komiyama, Tokutaro AU - Komiyama T FAU - Yamada, Mitsuhiko AU - Yamada M FAU - Iyo, Masaomi AU - Iyo M FAU - Ikeda, Kazutaka AU - Ikeda K FAU - Sora, Ichiro AU - Sora I LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Ann N Y Acad Sci JT - Annals of the New York Academy of Sciences JID - 7506858 RN - 0 (Receptors, Opioid, mu) RN - 44RAL3456C (Methamphetamine) SB - IM MH - Adult MH - Amphetamine-Related Disorders/*genetics/*metabolism MH - Chi-Square Distribution MH - Female MH - Gene Frequency/genetics MH - Humans MH - Male MH - *Methamphetamine MH - Monte Carlo Method MH - Polymorphism, Genetic/*genetics MH - Receptors, Opioid, mu/*genetics EDAT- 2004/11/16 09:00 MHDA- 2005/02/19 09:00 CRDT- 2004/11/16 09:00 PHST- 2004/11/16 09:00 [pubmed] PHST- 2005/02/19 09:00 [medline] PHST- 2004/11/16 09:00 [entrez] AID - 1025/1/316 [pii] AID - 10.1196/annals.1316.039 [doi] PST - ppublish SO - Ann N Y Acad Sci. 2004 Oct;1025:316-24. doi: 10.1196/annals.1316.039.