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Genotype-phenotype Analysis of Paraoxonase 1 in Schizophrenic Patients Treated with Atypical Antipsychotics

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Specialty Psychiatry
Date 2018 Feb 6
PMID 29397664
Citations 3
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Abstract

Objective: Recent studies suggest a possible involvement of low paraoxonase 1 (PON1) enzyme activities in the association between schizophrenia, treatment with atypical antipsychotics and increased cardiovascular (CVD) risk. In the present study, we aimed at investigating the PON1 status in a group of schizophrenic patients treated with either olanzapine or other antipsychotic, as compared to a group of healthy control participants.

Methods: We assessed the arylesterase (AREase) and paraoxonase (POase) activities of PON1, as well as three common polymorphisms of gene (Q192R, L55M, -108C>T).

Results: We found significantly lower (-13.3%) AREase activity in schizophrenic patients, along with significantly lower (-18.2%) POase activity in olanzapine-treated patients with QQ genotype. Furthermore, we found a significant difference between groups in L55M polymorphism distribution, whereas Q192R and -108C>T polymorphisms distributions were similar.

Conclusion: We identified the olanzapine-treated patients with QQ genotype as having the lowest PON1 (POase) activity, providing a possible way of identifying schizophrenic patients exposed to the greatest risk of CVD.

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Developing a Sensitive Platform to Measure 5-Methyltetrahydrofolate in Subjects with MTHFR and PON1 Gene Polymorphisms.

Lu M, Ku W, Syifa N, Hu S, Chou C, Wu Y Nutrients. 2022; 14(16).

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Why Should Psychiatrists and Neuroscientists Worry about Paraoxonase 1?.

Moreira E, Boll K, Correia D, Soares J, Rigobello C, Maes M Curr Neuropharmacol. 2018; 17(11):1004-1020.

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