Investigation of Methylation Levels in COMT Gene Promoter among Smokers and Opium Addicted Individuals Undergoing Methadone Treatment
1.1. Background: Previous studies have demonstrated that the COMT gene is associated with alcohol, nicotine, and illicit sub stances. The aim of the present study was to examine the methyla tion status of a remarkable region in the COMT gene promoter in methadone-treated smokers and addicts. Methods: All male sam ples, including 30 smokers, 30 […]