title: Investigation of the Mitochondrial ATPase 6/8 and tRNA(Lys) Genes Mutations in Autism.
abstract: OBJECTIVE
  Autism results from developmental factors that affect many or all functional brain systems. Brain is one of tissues which are crucially in need of adenosine triphosphate (ATP). Autism is noticeably affected by mitochondrial dysfunction which impairs energy metabolism. Considering mutations within ATPase 6, ATPase 8 and tRNA(Lys) genes, associated with different neural diseases, and the main role of ATPase 6/8 in energy generation, we decided to investigate mutations on these mtDNA-encoded genes to reveal their roles in autism pathogenesis.
  
  
  METHODS
  In this experimental study, mutation analysis for the mentioned genes were performed in a cohort of 24 unrelated patients with idiopathic autism by employing amplicon sequencing of mtDNA fragments.
  
  
  RESULTS
  In this study, 12 patients (50%) showed point mutations that represent a significant correlation between autism and mtDNA variations. Most of the identified substitutions (55.55%) were observed on MT-ATP6, altering some conserved amino acids to other ones which could potentially affect ATPase 6 function. Mutations causing amino acid replacement denote involvement of mtDNA genes, especially ATPase 6 in autism pathogenesis.
  
  
  CONCLUSIONS
  MtDNA mutations in relation with autism could be remarkable to realize an understandable mechanism of pathogenesis in order to achieve therapeutic solutions.
authors.affiliation: 1. Department of Medical Genetics, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran.
authors.forename: Fahimeh
authors.initials: F
authors.lastname: Piryaei
authors.forename: Massoud
authors.initials: M
authors.lastname: Houshmand
authors.forename: Omid
authors.initials: O
authors.lastname: Aryani
authors.forename: Sepideh
authors.initials: S
authors.lastname: Dadgar
authors.forename: Zahra-Soheila
authors.initials: ZS
authors.lastname: Soheili
keywords: ATP ase6/8; Autism; Mitochondria; Mutation; tRNALys