Journal
JOURNAL OF NEUROIMMUNE PHARMACOLOGY
Volume 1, Issue 3, Pages 280-295Publisher
SPRINGER
DOI: 10.1007/s11481-006-9023-5
Keywords
AIDS; amphetamines; cannabinoids; cocaine; cocaethylene; drugs of abuse; HIV; illicit drugs; immunity; infections; ketamine; marijuana; methadone; methamphetamine; morphine; opioids
Categories
Funding
- NATIONAL INSTITUTE ON DRUG ABUSE [R01DA015608] Funding Source: NIH RePORTER
- NIDA NIH HHS [DA15608, DA05832] Funding Source: Medline
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Illicit drugs such as amphetamines, cocaine, marijuana, and opiates alter immune function and decrease host resistance to microbes in vitro and in experimental animal models. Effects on the immune system may be mediated indirectly as a result of drug interactions in the central nervous system (CNS) or directly through activation of cognate receptors on various immune cell types. For marijuana and opioids, seven-transmembranal G protein-coupled receptors have been identified in the CNS and in the immune system that may play a functionally relevant role in immune modulation. There is accumulating evidence that sigma(1) receptors play a comparable role in cocaine-mediated alteration of immune responses. A mode by which these exogenously introduced substances affects immunity and host resistance may be by perturbing the balance of Th-1 proinflammatory versus Th-2 anti-inflammatory cytokines and lipid bioeffectors. However, while illicit drugs have been documented to alter immune functions in vitro and in animal models, there is a paucity of controlled longitudinal epidemiological studies that definitively correlate immunosuppressive effects with increased incidence of infections or immune disorders in humans, including infection with the human immunodeficiency virus (HIV) or disease progression to AIDS.
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