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Maria Karayiorgou

2 papers in the library · 11 citations · publishing 2006-2010

Papers

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Chronic adolescent exposure to Δ-9-tetrahydrocannabinol in COMT mutant mice: impact on psychosis-related and other phenotypes.

Neuropsychopharmacology October 2010 Colm M P O'Tuathaigh, Magdalena Hryniewiecka, Aine Behan et al.

Cannabis use confers a two-fold increase in the risk for psychosis, with adolescent use conferring even greater risk. A high-low activity catechol-O-methyltransferase (COMT) polymorphism may modulate the effects of adolescent Δ-9-tetrahydrocannabinol (THC) exposure on the risk for adult psychosis. Mice with knockout of the COMT gene were treated chronically with THC (4.0 and 8.0 mg/kg over 20...

Cannabis and other variables affecting age at onset in a schizophrenia founder population

African Journal of Psychiatry July 17, 2006 Johannes Lodewikus Roos, H.W. Pretorius, Maria Karayiorgou et al. 11 citations

Objective: An ongoing collaborative study between the Human Neurogenetic Laboratory of Rockefeller University, New York and the Department of Psychiatry at the University of Pretoria, has been taking place since 1997, to map genes for schizophrenia. Aspects of cannabis use/abuse will be reported.Method: The Diagnostic Interview for Genetic Studies [DIGS] is used for all diagnosis. A narrative...