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  • Title: A study of the possible association of plasminogen activator inhibitor type 1 4G/5G insertion/deletion polymorphism with susceptibility to schizophrenia and in its subtypes.
    Author: Yenilmez C, Ozdemir Koroglu Z, Kurt H, Yanas M, Colak E, Degirmenci I, Gunes HV.
    Journal: J Clin Pharm Ther; 2017 Feb; 42(1):103-107. PubMed ID: 27796029.
    Abstract:
    WHAT IS KNOWN AND OBJECTIVE: Inhibition of the fibrinolytic system may occur at the level of plasminogen activation, mainly by PAI-1. Mental and physical stress caused to alterations of platelet function, and also decreased to fibrinolytic activity. Furthermore, stress-induced thrombosis regulation was proposed to be by PAI-1 in schizophrenia patients. In this study, the distribution of genotypes and frequency of alleles of the plasminogen activator inhibitor type 1 (PAI-1) gene 4G/5G polymorphism in different Turkish clinical schizophrenia subtypes was investigated for its role in schizophrenia development. METHODS: The clinical schizophrenia subtypes include paranoid, catatonic, disorganized, undifferentiated and residual, as diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition IV (DSM-IV). Samples of genomic DNA (250 total, including 150 schizophrenia patients and 100 healthy subjects) were analysed. PAI-1 4G/5G genotyping was performed by polymerase chain reaction-allele-specific amplification. PCR products were separated by 2% agarose gel electrophoresis and then visualized. RESULTS AND DISCUSSION: The genotype distributions (P = 0·136) and allele frequencies (P = 0·721 for 4G, P = 0. 097 for 5G) were not significantly different between patients with schizophrenia and control subjects for the 4G/5G polymorphism. Similar results were also found for the genotype distributions (P = 0·640) and allele frequencies (P = 0·763 for 4G, P = 0·448 for 5G) in the clinical schizophrenia subtypes compared to the each other. WHAT IS NEW AND CONCLUSION: We conclude that PAI-1 4G/5G polymorphism was not significantly associated with schizophrenia or its subtypes in the Turkish population. However, we recognize that with our sample sizes, we cannot exclude weak associations.
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