• Effects of opioid dependence on gene expression in different parts of the reward system in animal brain
• Mutations in the genes involved in addiction in opioid addicts
• Neurotransmitters receptors gene expression peripheral lymphocytes in animal studies
• Effects of circadian rhythm disturbances on severity of morphine dependence and its association with Clock gene expression
• Post-mortem study of different neurotransmitters gene expression in different parts of the brain in people who have used drugs
• Morphine dependence in first and second generation of morphine dependent animals