AIMS To examine how race and methamphetamine legislation are associated with changes in cocaine and methamphetamine use among untreated rural stimulant users. DESIGN A longitudinal study of stimulant users identified through respondent-driven sampling. SETTING Rural areas of three US states. PARTICIPANTS Participants at baseline were current users of methamphetamine and/or cocaine. MEAS...

Background: Methamphetamine abuse is a reemerging epidemic in the United States and in many Asian countries. Clinical and preclinical observations suggest that methamphetamine may cause longlasting injury to the brain. In humans, some of the psychiatric conditions, such as paranoid psychosis, may occur not only acutely during methamphetamine exposure, but may persist for months or even years af...

Methamphetamine is an illicit psychostimulant that can produce psychotic symptoms similar to those seen in a primary disorder such as schizophrenia. During acute episode, the of methamphetamine-associated psychosis (MAP) be difficult distinguish from schizophrenia, making correct diagnosis difficult. This distinction crucial understanding cause illness, but very few studies have been conducted ...

This study reveals a novel receptor mechanism for methamphetamine action in dopamine transporter (DAT) regulation. Trace amine-associated receptor 1 (TAAR1) is expressed in brain dopaminergic nuclei and is activated by methamphetamine in vitro. Here, we show that methamphetamine interaction with TAAR1 inhibits [(3)H]dopamine uptake, enhances or induces [(3)H]dopamine efflux, and triggers DAT in...