A novel m.3395A>G missense mutation in the mitochondrial ND1 gene associated with the new tRNA(Ile) m.4316A>G mutation in a patient with hypertrophic cardiomyopathy and profound hearing loss

Imen Chamkha, Emna Mkaouar-Rebai, Hajer Aloulou, Imen Chabchoub, Chamseddine Kifagi, Nourhene Fendri-Kriaa, Thouraya Kammoun, Mongia Hachicha, Faiza Fakhfakh

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

Mitochondria are essential for early cardiac development and impaired regulation of mitochondrial function was implicated in congenital heart diseases. We described a newborn girl with hypertrophic cardiomyopathy and profound hearing loss. The mtDNA mutational analysis revealed the presence of known polymorphisms associated to cardiomyopathy and/or hearing loss, and 2 novel heteroplasmic mutations: m.3395A>G (Y30C) occurring in a highly conserved aminoacid of the ND1 gene and the m.4316A>G located in the residue A54 of the tRNA(Ile) gene. These 2 novel variations were absent in 150 controls. All these variants may act synergistically and exert a cumulative negative effect on heart function to generate the cardiomyopathy.

Originalspråkengelska
Sidor (från-till)504-10
Antal sidor7
TidskriftBiochemical and Biophysical Research Communications
Volym404
Nummer1
DOI
StatusPublished - 2011 jan. 7
Externt publiceradJa

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