Critical Role of Peripheral Vasoconstriction in Fatal Brain Hyperthermia Induced by MDMA (Ecstasy) under Conditions That Mimic Human Drug Use
Journal of Neuroscience June 4, 2014 Eugene A. Kiyatkin, A. H. Kim, Ken T. Wakabayashi et al. 47 citations
MDMA (Ecstasy) can cause fatal brain hyperthermia when taken in hot, crowded environments, even at moderate doses that are harmless under cool, quiet conditions. In male rats, MDMA at 9 mg/kg (about one-fifth of the lethal dose) produced only weak brain temperature increases under standard lab conditions (quiet rest, 22–23°C). However, social interaction with another male rat and a warm environment (29°C) dramatically amplified brain hyperthermia. The key mechanism is peripheral vasoconstriction, which prevents heat dissipation through the skin. This shows that doses of MDMA that are nontoxic in cool, quiet settings become highly dangerous under conditions mimicking recreational use at rave parties or other hot, crowded venues.