Association study indicates a protective role of phosphatidylinositol-4-phosphate-5-kinase against tardive dyskinesia
- PMID: 25548108
- PMCID: PMC4438543
- DOI: 10.1093/ijnp/pyu098
Association study indicates a protective role of phosphatidylinositol-4-phosphate-5-kinase against tardive dyskinesia
Abstract
Background: Tardive dyskinesia is a disorder characterized by involuntary muscle movements that occur as a complication of long-term treatment with antipsychotic drugs. It has been suggested to be related to a malfunctioning of the indirect pathway of the motor part of the cortical-striatal-thalamic-cortical circuit, which may be caused by oxidative stress-induced neurotoxicity.
Methods: The purpose of our study was to investigate the possible association between phosphatidylinositol-4-phosphate-5-kinase type IIa (PIP5K2A) function and tardive dyskinesia in 491 Caucasian patients with schizophrenia from 3 different psychiatric institutes in West Siberia. The Abnormal Involuntary Movement Scale was used to assess tardive dyskinesia. Individuals were genotyped for 3 single nucleotide polymorphisms in PIP5K2A gene: rs10828317, rs746203, and rs8341.
Results: A significant association was established between the functional mutation N251S-polymorphism of the PIP5K2A gene (rs10828317) and tardive dyskinesia, while the other 2 examined nonfunctional single nucleotide polymorphisms were not related.
Conclusions: We conclude from this association that PIP5K2A is possibly involved in a mechanism protecting against tardive dyskinesia-inducing neurotoxicity. This corresponds to our hypothesis that tardive dyskinesia is related to neurotoxicity at striatal indirect pathway medium-sized spiny neurons.
Keywords: PIP5K2A; gene polymorphism; medium spiny neurons; neurotoxicity; schizophrenia; tardive dyskinesia.
© The Author 2015. Published by Oxford University Press on behalf of CINP.
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