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|Title:||Association of IL-1B genetic polymorphisms with an increased risk of opioid and alcohol dependence|
|Citation:||Pharmacogenetics and Genomics (Print Edition), 2009; 19(11):869-876|
|Publisher:||Lippincott Williams & Wilkins|
|Liang Liu, Mark Hutchinson, Jason White, Andrew Somogyi and Janet Coller|
|Abstract:||OBJECTIVE: To examine the association between genetic variability of IL-1B, which encodes for the proinflammatory cytokine IL-1beta and the risk of developing opioid dependence. To confirm a previous study, we also examined the association between the IL-1B genetic polymorphism and alcohol dependence. METHODS: Genomic DNA was isolated from 60 opioid-dependent, 99 alcohol-dependent patients and 60 healthy nondependent controls. Polymerase chain reaction and restriction fragment length polymorphism were used to determine the presence of single nucleotide polymorphisms at positions -511, -31 and 3954 of IL-1B. RESULTS: IL-1B -511C and -31T alleles were more frequent in both the opioid-dependent and alcohol-dependent patients compared with the control group: odds ratio (OR, 95% confidence interval) P values corrected for false discovery rate=1.91 (1.14-3.20), P=0.043 and 1.89 (1.19-2.99), P=0.014, respectively, for IL-1B -511C>T; and OR=1.74 (1.02-2.97), P=0.066 and 1.80 (1.13-2.88), P=0.017, respectively, for IL-1B -31T>C. In contrast, no association was observed between opioid dependence and the IL-1B 3954C>T single nucleotide polymorphism [OR=1.60 (0.84-3.02), P=0.15]. CONCLUSION: This study confirms the previous finding that IL-1B polymorphism is associated with altered risk of alcohol dependence. IL-1B single nucleotide polymorphisms at position -511 and -31, which increase IL-1beta production, occur at a higher frequency in opioid-dependent populations and may be associated, albeit weakly, with an increased risk of opioid dependence.|
|Keywords:||alcohol dependence; cytokine; genetic polymorphism; IL-1B; interleukin-1beta; opioid dependence.|
|Rights:||© 2009 Lippincott Williams & Wilkins, Inc.|
|Appears in Collections:||Pharmacology publications|
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