Abstract:
:Recent studies in animal models have shown that the nociceptin system, comprising nociceptin (or OFQ/N, encoded by PNOC) and the nociceptin receptor (an opioid receptor-like protein encoded by OPRL1), may be involved in alcohol and other drug reward pathways. To determine whether the nociceptin system is associated with alcohol or illicit drug dependence in humans, we analyzed 10 single nucleotide polymorphisms (SNPs) in OPRL1 and 15 SNPs in PNOC in a sample of 1923 European Americans from 219 multiplex alcohol dependent families ascertained by the Collaborative Study on the Genetics of Alcoholism. The SNPs spanned both genes and several kb of their flanking sequences, and were in high linkage disequilibrium. Neither gene was associated with alcohol or illicit drug dependence, although two SNPs in PNOC showed marginal association with alcoholism and one with illicit drug dependence (P = 0.04-0.05). Secondary analyses suggested that two adjacent SNPs in intron 1 of OPRL1 were marginally associated with opioid dependence (P = 0.05); none of the SNPs in PNOC were associated with opioid dependence.
journal_name
Addict Bioljournal_title
Addiction biologyauthors
Xuei X,Flury-Wetherill L,Almasy L,Bierut L,Tischfield J,Schuckit M,Nurnberger JI Jr,Foroud T,Edenberg HJdoi
10.1111/j.1369-1600.2007.00082.xsubject
Has Abstractpub_date
2008-03-01 00:00:00pages
80-7issue
1eissn
1355-6215issn
1369-1600pii
ADB082journal_volume
13pub_type
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