Unlabelled: Schizophrenia, with incidence of 1% worldwide, is a common mental disorder. Phosphoinositide-3-kinases (PI3Ks) are a family of enzymes involved in cellular functions such as cell growth, proliferation, differentiation, motility, intracellular trafficking, and survival. These enzymes play an important role in the PI3K/AKT signalling pathway. The PIK3CA gene encodes the alpha catalytic subunit of the PI3K enzyme. The present study analysed the role of three SNPs of the PIK3CA gene (rs6443624 (A/C), rs7640662(C/G) and rs7621329(C/T)) in the development of schizophrenia.
Methods: In this case-controlled study, DNA was extracted from blood samples from 108 patients with schizophrenia and 108 healthy patients as controls. Genotypic analyses of PIK3CA SNPs rs6443624 (A/C), rs7640662(C/G) and rs7621329(C/T) were made using the tetra primer ARMS-PCR technique.
Results: The outcome shows significant difference between CT and the combined genotype (CT + TT) of rs7621329 and the risk of schizophrenia (OR = 6.4, 95% CI = 3.023-14.23, p < 0.0001). Outcome showed no significant difference for were for analyses of the rs6443624 and rs7640662 genotypes.
Conclusions: These results indicate an association between PIK3CA gene polymorphism on the rs7621329(C/T) site and the risk of schizophrenia. Further study of the genetic population using a larger sample size is necessary in order to validate these present findings.
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