The Effect of m.3010G> A Variant on Cyclic Vomiting Syndrome in Turkish Population

Öz

Objective: Cyclic vomiting syndrome (CVS) is a common gastrointestinal functional disorder. It has been shown that gastrointestinal functional disorders are associated with mitochondrial polymorphisms. In this study, we aimed that examine the clinical findings in patients with the m.3010G>A polymorphism. Materials and Methods: Mitochondrial DNA isolation was performed from peripheral blood from 55 patients who came to our clinic with suspicion of mitochondrial metabolic disease. Patients with m.3010G>A polymorphism were identified by performing whole mitochondrial genome DNA sequencing via Next-Generation DNA sequencing. These patients were examined for their clinical findings. Results: The mitochondrial genome analysis was performed on 55 patients in total, m.3010G>A polymorphism was detected in six different patients. There were no clinical findings related to CVS in this patient group with m.3010G>A polymorphism. Conclusions: Although it has been shown in previous studies that the m.3010G>A polymorphism could be associated with CVS these findings were not present in the patients participating in our study. Nevertheless, it should retain that CVS can occur in late-onset.

Anahtar Kelimeler

• Cyclic vomiting syndrome
• Mitochondrial DNA
• Polymorphism

m.3010G>A Değişikliğinin Türk Populasyonunda Siklik Kusma Sendromuna Etkisi

Öz

Giriş ve Amaç: Siklik kusma sendromu (SKS) sık görülen gastrointestinal fonksiyonel bir düzensizliktir. Gastrointestinal fonksiyonel düzensizliklerin mitokondriyal polimorfizmlerle ilişkili olduğu gösterilmiştir. Bu çalışmada, m.3010G>A değişikliğini taşıyan hastalarda klinik bulguların incelenmesi amaçlanmıştır. Gereç ve Yöntemler: Kliniğimize mitokondriyal hastalık şüphesi ile gelen 55 hastadan, periferik kandan mitokondriyal DNA izolasyonu yapılmıştır. Yeni nesil DNA dizileme ile tüm mitokondriyal genom DNA dizi analizi yapılarak m.3010G>A değişikliği olan hastalar saptanmıştır. Bu hastalarda klinik bulgular incelenmiştir. Bulgular: Toplam 55 hastada yapılan mitokondriyal genom analizinde altı farklı hastada m.3010G>A değişikliği saptanmıştır. m.3010G>A değişikliği saptanan bu hasta grubunda SKS ile ilgili klinik bulgular saptanmamıştır. Sonuç: Daha önce yapılan çalışmalarda m.3010G>A değişikliğinin SKS ile ilişkili olabileceği gösterilmiş olsa da bizim çalışmamızda katılan hastalarda bu bulgular bulunmamaktadır. Yine de SKS’nin ileri yaşlarda da ortaya çıkabileceği göz önünde bulundurulmalı ve yakın takip edilmelidir.

Anahtar Kelimeler

• Siklik Kusma Sendromu
• Polimorfizm
• Mitokondriyal DNA

Kaynakça

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