0000000000530628

AUTHOR

Laura Montermini

showing 2 related works from this author

Friedreich's Ataxia: Autosomal Recessive Disease Caused by an Intronic GAA Triplet Repeat Expansion

1996

International audience; Friedreich's ataxia (FRDA) is an autosomal recessive, degenerative disease that involves the central and peripheral nervous systems and the heart. A gene, X25, was identified in the critical region for the FRDA locus on chromosome 9q13. This gene encodes a 210-amino acid protein, frataxin, that has homologs in distant species such as Caenorhabditis elegans and yeast. A few FRDA patients were found to have point mutations in X25, but the majority were homozygous for an unstable GAA trinucleotide expansion in the first X25 intron.

MaleIron-sulfur cluster assemblyPolymerase Chain Reaction0302 clinical medicineTrinucleotide RepeatsIron-Binding ProteinsGenetics0303 health sciencesMultidisciplinaryAutosomal recessive cerebellar ataxiaPedigree3. Good healthFemalemedicine.symptomChromosomes Human Pair 9HumanPair 9Heterozygotecongenital hereditary and neonatal diseases and abnormalitiesAtaxiaMolecular Sequence DataGenes RecessiveLocus (genetics)BiologyChromosomes03 medical and health sciencesGene mappingAlleles; Amino Acid Sequence; Base Sequence; Chromosomes Human Pair 9; DNA Primers; Female; Friedreich Ataxia; Genes Recessive; Heterozygote; Humans; Male; Molecular Sequence Data; Pedigree; Point Mutation; Polymerase Chain Reaction; Proteins; Sequence Alignment; Introns; Iron-Binding Proteins; Trinucleotide RepeatsmedicineRecessiveHumansPoint MutationAmino Acid SequenceAlleleAllelesDNA Primers030304 developmental biologyBase SequencePoint mutationProteins[SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry Molecular Biology/Molecular biologymedicine.diseaseMolecular biologyIntronsGenes[SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human geneticsFriedreich AtaxiaFrataxinbiology.proteinSequence Alignment030217 neurology & neurosurgeryScience
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Evidence for a common origin of most Friedreich ataxia chromosomes in the Spanish population

1996

Haplotype analysis is a powerful approach to understand the spectrum of mutations accounting for a disease in a homogeneous population. We show that haplotype variation for 10 markers linked to the Friedreich ataxia locus (FRDA) argues in favor of an important mutation homogeneity in the Spanish population, and positions the FRDA locus in the region where it has been recently isolated. We also report the finding of a new single nucleotide polymorphism called FAD1. The new marker shows a very strong linkage disequilibrium with Friedreich ataxia (FA) in both the Spanish and French populations. suggesting the existence of an ancient and widespread FRDA mutations. Inclusion of FAD1 in the exten…

Genetic MarkersLinkage disequilibriumAtaxiaMolecular Sequence DataPopulationNerve Tissue ProteinsSingle-nucleotide polymorphismLocus (genetics)BiologyLinkage DisequilibriumTrinucleotide RepeatsGeneticsmedicineHumanseducationPhylogenyGenetics (clinical)Adaptor Proteins Signal TransducingGeneticseducation.field_of_studyPolymorphism GeneticBase SequenceHaplotypeIntronChromosome MappingIntronsHaplotypesFriedreich AtaxiaSpainGenetic markerMutationFrancemedicine.symptom
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