Mitochondrial Copy Number and D-Loop Variants in Pompe Patients
Journal Title: Cell Journal(Yakhteh) - Year 2016, Vol 18, Issue 3
Abstract
Objective Pompe disease is a rare neuromuscular genetic disorder and is classified into two forms of early and late-onset. Over the past two decades, mitochondrial abnor- malities have been recognized as an important contributor to an array of neuromuscular diseases. We therefore aimed to compare mitochondrial copy number and mitochondrial displacement-loop sequence variation in infantile and adult Pompe patients. Materials and Methods In this retrospective study, the mitochondrial D-loop sequence was analyzed by polymerase chain reaction (PCR) and direct sequencing to detect pos- sible variation in 28 Pompe patients (17 infants and 11 adults). Results were compared with 100 healthy controls and sequences of all individuals were compared with the Cam- bridge reference sequence. Real-time PCR was used to quantify mitochondrial DNA copy number. Results Among 59 variants identified, 37(62.71%) were present in the infant group, 14(23.333%) in the adult group and 8(13.333%) in both groups. Mitochondrial copy number in infant patients was lower than adults (P<0.05). A significant frequency differ- ence was seen between the two groups for 12 single nucleotide polymorphism (SNP). A novel insertion (317-318 ins CCC) was observed in patients and six SNPs were iden- tified as neutral variants in controls. There was an inverse association between mito- chondrial copy number and D-loop variant number (r=0.54). Conclusion The 317-318 ins CCC was detected as a new mitochondrial variant in Pompe patients.
Authors and Affiliations
Seyed Mohammad Akrami
Keywords
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- EP ID EP553204
- DOI 10.22074/cellj.2016.4569
- Views 155
- Downloads 0
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