Abstract
To study the distributions of three single nucleotide polymorphisms (SNPs) in β-arrestin2 (ARRB2) which including rs3786047, rs1045280 and rs2036657 and to elucidate the relationship between these SNPs and response to methadone maintenance treatment (MMT) among heroin-dependent patients of Han ethnicity population in Hunan. Han MMT patients were recruited in four random-chosen MMT clinics from Hunan province. Demographics, history of drug-use and MMT were recorded. ARRB2 SNPs were genotyped to determine the association between SNPs and response to MMT. Distributions of the three SNPs were in Hardy-Weinberg equilibrium in both groups (responders vs. non-responders). There was no statistical significance in the distribution frequency of genotype on rs3786047 (χ(2)=0.486 2, P=0.784), rs1045280 (χ(2)=1.591 9, P=0.451) and rs2036657 (χ(2)=1.061 5, P=0.588) in ARRB2 among the responders or the non-responders. Associations between the ARRB2 genotypes, rs3786047, rs1045280 and rs2036657, and MMT response in Han MMT patients in Hunan province did not appear.
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