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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Acta+Neuropathol
2014 ; 128
(1
): 81-98
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gab.com Text
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Rapid-onset dystonia-parkinsonism associated with the I758S mutation of the
ATP1A3 gene: a neuropathologic and neuroanatomical study of four siblings
#MMPMID24803225
Oblak AL
; Hagen MC
; Sweadner KJ
; Haq I
; Whitlow CT
; Maldjian JA
; Epperson F
; Cook JF
; Stacy M
; Murrell JR
; Ozelius LJ
; Brashear A
; Ghetti B
Acta Neuropathol
2014[Jul]; 128
(1
): 81-98
PMID24803225
show ga
Rapid-onset dystonia-parkinsonism (RDP) is a movement disorder associated with
mutations in the ATP1A3 gene. Signs and symptoms of RDP commonly occur in
adolescence or early adulthood and can be triggered by physical or psychological
stress. Mutations in ATP1A3 are also associated with alternating hemiplegia of
childhood (AHC). The neuropathologic substrate of these conditions is unknown.
The central nervous system of four siblings, three affected by RDP and one
asymptomatic, all carrying the I758S mutation in the ATP1A3 gene, was analyzed.
This neuropathologic study is the first carried out in ATP1A3 mutation carriers,
whether affected by RDP or AHC. Symptoms began in the third decade of life for
two subjects and in the fifth for another. The present investigation aimed at
identifying, in mutation carriers, anatomical areas potentially affected and
contributing to RDP pathogenesis. Comorbid conditions, including cerebrovascular
disease and Alzheimer disease, were evident in all subjects. We evaluated areas
that may be relevant to RDP separately from those affected by the comorbid
conditions. Anatomical areas identified as potential targets of I758S mutation
were globus pallidus, subthalamic nucleus, red nucleus, inferior olivary nucleus,
cerebellar Purkinje and granule cell layers, and dentate nucleus. Involvement of
subcortical white matter tracts was also evident. Furthermore, in the spinal
cord, a loss of dorsal column fibers was noted. This study has identified
RDP-associated pathology in neuronal populations, which are part of complex motor
and sensory loops. Their involvement would cause an interruption of cerebral and
cerebellar connections which are essential for maintenance of motor control.