title: [The molecular genetic approach to the study of dominant spinocerebellar ataxias].
abstract: At least 5 different genes of autosomal dominant spinocerebellar ataxias (SCA) were revealed recently. Their discovery permitted to elaborate the most perfect classification of this heterogeneous group of diseases. In two forms of ataxias (SCA1 and SCA3) the mutations consist in the expansion of CAG-trinucleotides repetitions. The Russian population of patients with dominant SCA (13 families) was examined for the first time in terms of the evaluation of mutant gene carriers of SCA1 and SCA3. SCA1 was diagnosed in 5 families on the molecular level. The cerebellar ataxia, dysarthria as well as pyramidal symptoms comprised the basis of SCA1 clinical pattern. There were no SCA3 cases at DNA-testing. The perspectives of DNA-diagnosis of inherited ataxias were considered.
authors.forename: S N
authors.initials: SN
authors.lastname: Illarioshkin
authors.forename: I V
authors.initials: IV
authors.lastname: Ovchinnikov
authors.forename: I A
authors.initials: IA
authors.lastname: Ivanova-Smolenskaia
authors.forename: N V
authors.initials: NV
authors.lastname: Vereshchagin
authors.forename: E D
authors.initials: ED
authors.lastname: Markova
authors.forename: N I
authors.initials: NI
authors.lastname: Miklina
authors.forename: S A
authors.initials: SA
authors.lastname: Kliushnikov
mesh_terms: D002869:Chromosome Aberrations / Q000175:diagnosis / Q000235:genetics*; D025063:Chromosome Disorders; D004247:DNA / Q000235:genetics; D005799:Genes, Dominant; D006579:Heterozygote; D006801:Humans; D009154:Mutation; D016133:Polymerase Chain Reaction; D012426:Russia; D013132:Spinocerebellar Degenerations / Q000175:diagnosis / Q000235:genetics*
chemical_list: D004247:DNA
vernacular_title: Molekuliarno-geneticheskiĭ podkhod v izuchenii dominantnykh spinotserebelliarnykh ataksiĭ.