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- W2000480527 abstract "Abstract Protein kinase B (Akt), glycogen synthase kinase‐3 (GSK‐3) and members of the Wnt signal transduction pathway were recently found to be altered in schizophrenia and targeted by antipsychotic drugs. In the current study, selected Wnt signalling proteins were investigated to determine if they are altered by the antipsychotics clozapine or haloperidol in the rat prefrontal cortex. Pheochromocytoma (PC12) and neuroblastoma (SH‐SY5Y) cells were also used to elucidate how antipsychotics generated the pattern of changes observed in vivo . Western blotting (WB) revealed that treatment with haloperidol or clozapine caused an up‐regulation of Wnt‐5a, dishevelled‐3, Axin, total and phosphorylated GSK‐3 and β‐catenin protein levels. Treatment of PC12 and SH‐SY5Y cells with a variety of pharmacological agents as well as the over‐expression of several Wnt related proteins failed to mimic the pattern observed in vivo following antipsychotic treatment. However, the over‐expression of dishevelled‐3 nearly perfectly duplicated the changes observed in vivo . Immunoprecipitations (IP) conducted using protein isolated from the rat prefrontal cortex indicated that dishevelled‐3 is associated with the D 2 dopamine receptor thereby suggesting that antipsychotics may act on dishevelled‐3 via D 2 dopamine receptors to initiate a cascade of downstream changes involving Axin, GSK‐3 and β‐catenin that may help to alleviate psychosis in schizophrenic patients." @default.
- W2000480527 created "2016-06-24" @default.
- W2000480527 creator A5013638645 @default.
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- W2000480527 creator A5055688524 @default.
- W2000480527 date "2007-02-26" @default.
- W2000480527 modified "2023-10-12" @default.
- W2000480527 title "Activation of the canonical Wnt pathway by the antipsychotics haloperidol and clozapine involves dishevelled-3" @default.
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