@article {10.3844/ajidsp.2006.98.106, article_type = {journal}, title = {Role of HIV-1 Infection in Addictive Behavior: A Study of a HIV-1 Transgenic Rat Model}, author = {Chang, Sulie L. and Vigorito, Michael}, volume = {2}, number = {2}, year = {2006}, month = {Jun}, pages = {98-106}, doi = {10.3844/ajidsp.2006.98.106}, url = {https://thescipub.com/abstract/ajidsp.2006.98.106}, abstract = {Epidemiological research indicates that drug abuse is prevalent among individuals infected with HIV-1. Evidence from preclinical research also suggests that drugs of abuse exacerbate the progression of neuropathological changes in the HIV-1 infected brain probably through common mechanisms of neuronal injury. The effects of HIV-1 on the efficacy and abuse potential of controlled drugs such as morphine, however, has not been explored. The current study reports that the noninfectious HIV-1 transgenic (HIV-1 Tg) rat shows up-regulated expression of the mu opioid receptor (MOR) at the transcriptional level and functional supersensitivity to morphine, a MOR agonist. Compared to nontransgenic control rats, the HIV-1 Tg rats also show greater motivation to run in a wheel, a behavior that is known to be associated with increased drug self-administration. These results suggest the potential role of HIV-1 infection in enhancing vulnerability to addiction and this possibility warrants further investigation to better understand the link between HIV-1 infection and the abuse of drugs including opioids.}, journal = {American Journal of Infectious Diseases}, publisher = {Science Publications} }