| Literature DB >> 15716360 |
Philip Seeman1, David Weinshenker, Remi Quirion, Lalit K Srivastava, Sanjeev K Bhardwaj, David K Grandy, Richard T Premont, Tatyana D Sotnikova, Patricia Boksa, Mufida El-Ghundi, Brian F O'dowd, Susan R George, Melissa L Perreault, Pekka T Männistö, Siobhan Robinson, Richard D Palmiter, Teresa Tallerico.
Abstract
Dopamine supersensitivity occurs in schizophrenia and other psychoses, and after hippocampal lesions, antipsychotics, ethanol, amphetamine, phencyclidine, gene knockouts of Dbh (dopamine beta-hydroxylase), Drd4 receptors, Gprk6 (G protein-coupled receptor kinase 6), Comt (catechol-O-methyltransferase), or Th-/-, DbhTh/+ (tyrosine hydroxylase), and in rats born by Cesarean-section. The functional state of D2, or the high-affinity state for dopamine (D2High), was measured in these supersensitive animal brain striata. Increased levels and higher proportions (40-900%) for D2High were found in all these tissues. If many types of brain impairment cause dopamine behavioral supersensitivity and a common increase in D2High states, it suggests that there are many pathways to psychosis, any one of which can be disrupted.Entities:
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Year: 2005 PMID： 15716360 PMCID： PMC548961 DOI： 10.1073/pnas.0409766102
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205