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Spinocerebellar ataxia type 1 (SCA1) is a rare autosomal dominant disorder, which, like other spinocerebellar ataxias, is characterized by neurological symptoms including dysarthria, hypermetric saccades, and ataxia of gait and stance. This cerebellar dysfunction is progressive and permanent. First onset of symptoms is normally between 30 and ...
The first ataxia gene was identified in 1993 and called "Spinocerebellar ataxia type 1" (SCA1); later genes were called SCA2, SCA3, etc. Usually, the "type" number of "SCA" refers to the order in which the gene was found. At this time, there are at least 49 different gene mutations that have been found. [citation needed]
ATXN1 is the gene mutated in spinocerebellar ataxia type 1 (SCA1), a dominantly-inherited, fatal genetic disease in which neurons in the cerebellum and brain stem degenerate over the course of years or decades. [8]
Autosomal dominant cerebellar ataxia (ADCA) is a form of spinocerebellar ataxia inherited in an autosomal dominant manner. ADCA is a genetically inherited condition that causes deterioration of the nervous system leading to disorder and a decrease or loss of function to regions of the body.
Following the establishment of her own lab, Zoghbi continued studying spinocerebellar ataxia type 1 (SCA1), in collaboration with Harry Orr from the University of Minnesota. [18] On the same day, 8 April 1993, both Zoghbi and Orr identified ATXN1 as the gene responsible for SCA1. [ 13 ]
SCA1 (Spinocerebellar ataxia Type 1) ATXN1: 6 - 35: 49 - 88 SCA2 (Spinocerebellar ataxia Type 2) ATXN2: 14 - 32: 33 - 77 SCA3 (Spinocerebellar ataxia Type 3 or Machado-Joseph disease) ATXN3: 12 - 40: 55 - 86 SCA6 (Spinocerebellar ataxia Type 6) CACNA1A: 4 - 18: 21 - 30 SCA7 (Spinocerebellar ataxia Type 7) ATXN7: 7 - 17: 38 - 120 SCA17 ...
Spinocerebellar ataxia type 1 (SCA1) CAG repeats are most often passed down through paternal inheritance and similarities can be seen with HD. [15] The tract size for offspring of mothers with these repeats does not display any degree of change. [64]
The neurodegenerative disease spinocerebellar ataxia type 1 (SCA1) is caused by an unstable polyglutamine expansion within the Ataxin 1 protein. This defect in Ataxin 1 protein causes impairment of mitochondria in Purkinje cells, leading to premature degeneration of the Purkinje cells. [ 42 ]