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RESEARCH PAPER
Lack of association between two genetic polymorphisms of SOD2 (rs2758339 and rs5746136)
and the risk of opium dependency
1
Department of Biology, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
Submission date: 2017-01-21
Acceptance date: 2017-03-23
Online publication date: 2017-07-06
Publication date: 2019-12-20
Corresponding author
Mostafa Saadat
Department of Biology, College of Sciences, Shiraz University, Shiraz, 71454 Iran. Tel.: +9871 36137432; fax: +9871 32280926.
Department of Biology, College of Sciences, Shiraz University, Shiraz, 71454 Iran. Tel.: +9871 36137432; fax: +9871 32280926.
Pol. Ann. Med. 2017;24(2):194-198
KEYWORDS
ABSTRACT
Introduction:
Superoxide dismutase-2 (EC 1.15.1.1; SOD2, OMIM: 147460) is a tetrameric enzyme which contains manganese in its active site. It is an important enzyme involved in the cellular detoxification by converting highly toxic superoxide radicals into less reactive molecules, hydrogen peroxide and oxygen. Several single nucleotide polymorphisms have been well defined in the gene encoding SOD2, including the potentially functional polymorphisms of rs2758339 and rs5746136.
Aim:
The aim of the present study is to investigate the associations between the rs2758339 (A/C substitution) and rs5746136 (A/G substitution) polymorphisms and the risk of dependency to opium.
Material and methods:
The present case–control study was performed in Shiraz (southern Iran) on 143 opium dependent and 569 healthy controls. The genotypes of the rs2758339 and rs5746136 polymorphisms were determined by polymerase chain reaction.
Results and discussion:
Statistical analysis showed that there was no significant association between the study polymorphisms and the risk of opium dependency. A significant linkage disequilibrium was observed between the study SOD2 polymorphisms. Statistical analysis showed that there was no significant association between the haplotypes of the polymorphisms and the risk of opium dependency.
Conclusions:
The present data revealed that the rs2758339 and rs5746136 polymorphisms of SOD2 are not risk factors for dependency to opium.
Superoxide dismutase-2 (EC 1.15.1.1; SOD2, OMIM: 147460) is a tetrameric enzyme which contains manganese in its active site. It is an important enzyme involved in the cellular detoxification by converting highly toxic superoxide radicals into less reactive molecules, hydrogen peroxide and oxygen. Several single nucleotide polymorphisms have been well defined in the gene encoding SOD2, including the potentially functional polymorphisms of rs2758339 and rs5746136.
Aim:
The aim of the present study is to investigate the associations between the rs2758339 (A/C substitution) and rs5746136 (A/G substitution) polymorphisms and the risk of dependency to opium.
Material and methods:
The present case–control study was performed in Shiraz (southern Iran) on 143 opium dependent and 569 healthy controls. The genotypes of the rs2758339 and rs5746136 polymorphisms were determined by polymerase chain reaction.
Results and discussion:
Statistical analysis showed that there was no significant association between the study polymorphisms and the risk of opium dependency. A significant linkage disequilibrium was observed between the study SOD2 polymorphisms. Statistical analysis showed that there was no significant association between the haplotypes of the polymorphisms and the risk of opium dependency.
Conclusions:
The present data revealed that the rs2758339 and rs5746136 polymorphisms of SOD2 are not risk factors for dependency to opium.
ACKNOWLEDGEMENTS
The authors are indebted to the participants for their close
cooperation. The authors are indebted to Dr. Maryam Ansari-
Lari for her critical reading the manuscript and for her
contribution in discussion. This study was supported by
Shiraz University, Iran.
CONFLICT OF INTEREST
None declared.
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