A Case-control Study on the Association of Mitochondrial Transcription Factor a Gene +35G/C Polymorphism and Mitochondrial DNA Copy Number with the Risk of Endometriosis in Indian Women

Himabindu Beeram, Tumu Venkat Reddy, Suresh Govatati, Swapna Siddamalla, Mamata Deenadayal, S. Shivaji, Manjula Bhanoori
In: International Journal of Biochemistry Research & Review · 2021 · pp. 60–67 · doi:10.9734/ijbcrr/2021/v30i730279 · W3214592964
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This case-control study found that the GG genotype of TFAM +35G/C polymorphism and decreased mitochondrial DNA copy number are significantly associated with the risk of endometriosis in Indian women.

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Abstract

Aim: The Mitochondrial transcription factor A (TFAM) and mitochondrial (mt) DNA copy number variations are known to contribute in disease development. Genetic factors play an important role in the development of endometriosis. Therefore, this case–control study aimed to analyze the association of TFAM+35G/C polymorphism and mitochondrial copy number with the risk of endometriosis in Indian women. Study Design: This study was carried out on 418 subjects including 200 endometriosis cases and 218 controls. Methodology: Genotyping of TFAM +35G/C polymorphism (rs1937) was carried out by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP). Quantification of mtDNA copy number was carried out using a real time quantitative polymerase chain reaction (qRT-PCR). Place and Duration of Study: Department of Biochemistry, Osmania University, 2014 to 2020. Results: TFAM genotype as well as allele distributions were all in Hardy-Weinberg equilibrium. The results indicated a significant reduction of GG genotype frequency (P=0.009), high ‘C’ allele frequency (P=0.017) and significantly decreased mtDNA copy number in endometriosis cases compared to controls (P= 0.0001). Conclusion: Present study revealed a statistically significant association of decreased GG genotype of TFAM +35G/C polymorphism and mtDNA copy number with the risk of developing endometriosis in Indian women.

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endometriosis

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