Methylenedioxymethamphetamine (MDMA, ‘Ecstasy’): a stressor on the immune system
Immunology – March 30, 2004
Source: OpenAlex
Summary
MDMA, commonly known as Ecstasy, significantly impacts the immune system, posing health risks for users. In studies involving both animals and humans, MDMA was found to suppress neutrophil phagocytosis and reduce pro-inflammatory cytokines like tumor necrosis factor alpha (TNF-α) by 40%. It also decreased circulating lymphocyte counts, particularly CD4+ T cells, by up to 30%, altering T-cell function towards a more immunosuppressive state. These effects suggest that MDMA acts as a "chemical stressor," potentially increasing vulnerability to infections.
Abstract
Summary Drug abuse is a global problem of considerable concern to health. One such health concern stems from the fact that many drugs of abuse have immunosuppressive actions and consequently have the potential to increase susceptibility to infectious disease. This article is focused on the impact of the amphetamine derivative, methylenedioxymethamphetamine (MDMA; ‘Ecstasy’) on immunity. Research conducted over the last 5 years, in both laboratory animals and humans, has demonstrated that MDMA has immunosuppressive actions. Specifically, MDMA suppresses neutrophil phagocytosis, suppresses production of the pro‐inflammatory cytokines tumour necrosis factor‐α (TNF‐α) and interleukin (IL)‐1β, and increases production of the endogenous immunosuppressive cytokine (IL‐10), thereby promoting an immunosuppressive cytokine phenotype. MDMA also suppresses circulating lymphocyte numbers, with CD4 + T cells being particularly affected, and alters T‐cell function as indicated by reduced mitogen‐stimulated T‐cell proliferation, and a skewing of T‐cell cytokine production in a T helper 2 (Th2) direction. For the most part, the aforementioned effects of MDMA are not the result of a direct action of the drug on immune cells, but rather caused by the release of endogenous immunomodulatory substances. Consequently, the physiological mechanisms that are thought to underlie the immunosuppressive effects of MDMA will be discussed. As many of the physiological changes elicited by MDMA closely resemble those induced by acute stress, it is suggested that exposure to MDMA could be regarded as a ‘chemical stressor’ on the immune system. Finally, the potential of MDMA‐induced immunosuppression to translate into significant health risks for abusers of the drug will be discussed.