TY - JOUR
T1 - Dopamine supersensitivity correlates with D2High states, implying many paths to psychosis
AU - Seeman, Philip
AU - Weinshenker, David
AU - Quirion, Remi
AU - Srivastava, Lalit K.
AU - Bhardwaj, Sanjeev K.
AU - Grandy, David K.
AU - Premont, Richard T.
AU - Sotnikova, Tatyana D.
AU - Boksa, Patricia
AU - El-Ghundi, Mufida
AU - O'Dowd, Brian F.
AU - George, Susan R.
AU - Perreault, Melissa L.
AU - Männistö, Pekka T.
AU - Robinson, Siobhan
AU - Palmiter, Richard D.
AU - Tallerico, Teresa
PY - 2005/3/1
Y1 - 2005/3/1
N2 - Dopamine supersensitivity occurs in schizophrenia and other psychoses, and after hippocampal lesions, antipsychotics, ethanol, amphetamine, phencyclidine, gene knockouts of Dbh (dopamine β-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.
AB - Dopamine supersensitivity occurs in schizophrenia and other psychoses, and after hippocampal lesions, antipsychotics, ethanol, amphetamine, phencyclidine, gene knockouts of Dbh (dopamine β-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.
KW - Addiction
KW - Dopamine receptors
KW - Gene knockouts
KW - Schizophrenia
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U2 - 10.1073/pnas.0409766102
DO - 10.1073/pnas.0409766102
M3 - Article
C2 - 15716360
AN - SCOPUS:20044378114
SN - 0027-8424
VL - 102
SP - 3513
EP - 3518
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 9
ER -