title: Leber's hereditary optic neuroretinopathy (LHON) associated with mitochondrial DNA point mutation G11778A in two Croatian families.
abstract: Leber's hereditary optic neuroretinopathy (LHON) is manifested as a bilateral acute or subacute loss of central vision due to optic atrophy. It is linked to point mutations of mitochondrial DNA, which is inherited maternally. The most common mitochondrial DNA point mutations associated with LHON are G3460A, G11778A and T14484C. These mutations are linked with the defects of subunits of the complex I (NADH-dehydrogenase-ubiquinone reductase) in mitochondria. The G11778A mitochondrial DNA point mutation is manifested by a severe visual impairment. In this paper two Croatian families with the LHON G11778A mutation are presented. Three LHON patients from two families were younger males which had the visual acuity of 0.1 or below, the ophthalmoscopy revealed telangiectatic microangiopathy and papilloedema, while Goldmann kinetic perimetry showed a central scotoma. The mothers and female relatives were LHON mutants without symptoms, whereas their sons suffered from a severe visual impairment. Molecular diagnosis helps to explain the cause of LHON disease.
authors.affiliation: Division of Molecular Medicine, Institute "Ruder Bosković", Zagreb, Croatia. kleiner@irb.hr
authors.forename: Irena
authors.initials: I
authors.lastname: Martin-Kleiner
authors.forename: Jelka
authors.initials: J
authors.lastname: Gabrilovac
authors.forename: Mario
authors.initials: M
authors.lastname: Bradvica
authors.forename: Tomislav
authors.initials: T
authors.lastname: Vidović
authors.forename: Branimir
authors.initials: B
authors.lastname: Cerovski
authors.forename: Ksenija
authors.initials: K
authors.lastname: Fumić
authors.forename: Milivoj
authors.initials: M
authors.lastname: Boranić
mesh_terms: D000328:Adult; D002648:Child; D017523:Croatia; D004272:DNA, Mitochondrial / Q000235:genetics*; D005190:Family; D005260:Female; D006579:Heterozygote; D006801:Humans; D008297:Male; D008875:Middle Aged; D008967:Molecular Biology; D029242:Optic Atrophy, Hereditary, Leber / Q000235:genetics*; D010375:Pedigree; D017354:Point Mutation / Q000235:genetics*
chemical_list: D004272:DNA, Mitochondrial