Common changes in rat cortical gene expression after chronic treatment with chlorpromazine and haloperidol may be related to their antipsychotic efficacy
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View abstract on PubMed
Summary
This summary is machine-generated.Antipsychotic drugs alter gene expression in rat brains. Common changes in 154 genes suggest a role for altered gene expression in the therapeutic effects of these medications.
Area Of Science
- Neuroscience
- Molecular Biology
- Pharmacology
Background
- Antipsychotic drugs are believed to exert therapeutic effects through molecular changes.
- Previous studies indicate antipsychotic treatment alters gene expression in the rat cortex.
Purpose Of The Study
- To identify common gene expression changes induced by two antipsychotic drugs.
- To investigate the relationship between these molecular alterations and therapeutic mechanisms.
Main Methods
- Rat cortical RNA levels were measured using Affymetrix GeneChip® Rat Genome 230 2.0 Arrays.
- Animals received vehicle, haloperidol, or chlorpromazine in drinking water for 28 days (n=10 per group).
- Panther Gene Ontology Classification System was employed to analyze biological consequences of gene expression changes.
Main Results
- Chlorpromazine and haloperidol treatments altered cortical RNA levels in 454 and 102 genes, respectively, compared to vehicle controls.
- A significant overlap was observed, with 154 genes showing highly correlated fold changes in expression after treatment with both drugs (p < 0.05).
- Affected genes included enzymes, receptors, signaling pathways, transcription regulators, cytoskeleton components, and transporters.
Conclusions
- Altered gene expression is a significant mechanism of action for antipsychotic drugs.
- Specific gene expression changes identified in this study may contribute to the therapeutic benefits of antipsychotic medications.
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