PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16407535-3 2006 The levels of dopamine and its major metabolites in the nucleus accumbens were markedly increased by the microinjection of orexin A and orexin B into the VTA. Dopamine 14-22 hypocretin Mus musculus 123-131 16407535-3 2006 The levels of dopamine and its major metabolites in the nucleus accumbens were markedly increased by the microinjection of orexin A and orexin B into the VTA. Dopamine 14-22 hypocretin Mus musculus 136-144 16407535-6 2006 Furthermore, the increased level of dialysate dopamine produced by morphine in the mouse brain was significantly decreased by deletion of the prepro-orexin gene. Dopamine 46-54 hypocretin Mus musculus 142-155 16407535-7 2006 These findings provide new evidence that orexin-containing neurons in the VTA are directly implicated in the rewarding effect and hyperlocomotion induced by morphine through activation of the mesolimbic dopamine pathway in rodents. Dopamine 203-211 hypocretin Mus musculus 41-47