Indian Journal of PsychiatryIndian Journal of Psychiatry
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Year : 2017  |  Volume : 59  |  Issue : 4  |  Page : 483-486

No genetic association between A118G polymorphism of μ-opioid receptor gene and schizophrenia and bipolar disorders

1 Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2 Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
3 Genomic Research Center, Birjand University of Medical Sciences; Department of Molecular Medicine, Birjand University of Medical Sciences, Birjand, Iran; Department of Cellular and Molecular Medicine, Mehrvarzan-e-Saba Gostar Medical Rehabilitation and Maintenance Center of Chronic Mental Patients, Karaj, Alborz Province, Canada
4 Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada; Cellular and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
5 Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, Iran

Correspondence Address:
Dr. Jila Yavarian
Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/psychiatry.IndianJPsychiatry_53_17

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Background: Schizophrenia (SZ) and bipolar disorder (BD) are chronic and multifactorial psychiatric disorders that might be affected by different genes in combination with environmental factors. There is evidence of association between polymorphisms of μ-opioid receptor gene (OPRM1) with these disorders. Objectives: The aim of this study was to investigate the genetic association between OPRM1 A118G SNP in SZ and BD patients in comparison with healthy controls (HCs). Materials and Methods: One single-nucleotide polymorphism in OPRM1 was genotyped using TaqMan real-time PCR assay in 203 SZ and BD patients and 389 HCs. Results: There was no statistically significant difference in genotypic and allelic frequencies of OPRM1 A118G SNP between HCs and SZ/BD patients. Conclusions: To find the underlying genetic factors associated with these complex disorders, further studies need to be conducted using larger sample size, different genetic populations, and different gene variations.



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