American Journal of Medicine Studies
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American Journal of Medicine Studies. 2015, 3(1), 8-12
DOI: 10.12691/ajms-3-1-3
Open AccessArticle

Deletion Polymorphism of Glutathione S-transferases M1 and T1 genes in the Sudanese Population

Muhalab Ali1, Amir T. Ibrahim2, Mohamed T. Ibrahim3 and Abdel Halim A. Salem4, 5,

1Department of Biochemistry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain

2Central Laboratory, Ministry of Science and Technology, Khartoum, Sudan

3College of Animal Production Science and Technology, Sudan University of Science and Technology, Khartoum, Sudan

4Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain

5Department of Anatomy, Faculty of Medicine, Suez Canal University, Ismailia, Egypt

Pub. Date: November 24, 2015

Cite this paper:
Muhalab Ali, Amir T. Ibrahim, Mohamed T. Ibrahim and Abdel Halim A. Salem. Deletion Polymorphism of Glutathione S-transferases M1 and T1 genes in the Sudanese Population. American Journal of Medicine Studies. 2015; 3(1):8-12. doi: 10.12691/ajms-3-1-3

Abstract

Glutathione S-transferases (GSTs) play a major role in the detoxification of various compounds. Polymorphic variants in GST genes were reported for different populations. The main objective of this study was to determine the frequencies of GSTM1 and GSTT1 null genotypes in the Sudanese population. GST genotyping was carried out using multiplex PCR. Study population included 114 unrelated healthy Sudanese subjects. The results showed that the prevalence of GSTM1 and GSTT1 deletion homozygosity among Sudanese were 54.7% and 42.1%, respectively. There are no significant differences in allelic distribution of GSTM1 gene between the Sudanese and other ethnic groups except for sub-Saharan Africans. As regards the allelic distribution of GSTT1 genes, the Sudanese population is similar to sub-Saharan Africans but significantly different from Europeans. Combined analysis of both genes revealed that 24.6% of Sudanese harbor the deleted genotype of both genes and it is the highest reported so far for an Arab and African population. This is the first study that addresses deletion polymorphism of GST genes in Sudanese. We provide a reference database of allelic frequencies of the GSTM1 and GSTT1 genotypes among Sudanese.

Keywords:
Glutathione S-transferase deletion polymorphisms Sudanese

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