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Brain Structural Signature of RFC1‐Related Disorder
Movement disorders, 2021-11, Vol.36 (11), p.2634-2641
Matos, Paula Camila A.A.P.
Rezende, Thiago J.R.
Schmitt, Gabriel S.
Bonadia, Luciana Cardoso
Reis, Fabiano
Martinez, Alberto R.M.
Lima, Fabrício D.
Bueno, Manoella Guerra de Albuquerque
Tomaselli, Pedro José
Cendes, Fernando
Pedroso, José Luiz
Barsottini, Orlando G.P.
Marques, Wilson
França, MarcondesCavalcante
2021
Details
Autor(en) / Beteiligte
Matos, Paula Camila A.A.P.
Rezende, Thiago J.R.
Schmitt, Gabriel S.
Bonadia, Luciana Cardoso
Reis, Fabiano
Martinez, Alberto R.M.
Lima, Fabrício D.
Bueno, Manoella Guerra de Albuquerque
Tomaselli, Pedro José
Cendes, Fernando
Pedroso, José Luiz
Barsottini, Orlando G.P.
Marques, Wilson
França, MarcondesCavalcante
Titel
Brain Structural Signature of RFC1‐Related Disorder
Ist Teil von
Movement disorders, 2021-11, Vol.36 (11), p.2634-2641
Ort / Verlag
Hoboken, USA: John Wiley & Sons, Inc
Erscheinungsjahr
2021
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Background The cerebellar ataxia, neuropathy, and vestibular areflexia syndrome was initially described in the early 1990s as a late‐onset slowly progressive condition. Its underlying genetic cause was recently mapped to the RFC1 gene, and additional reports have expanded on the phenotypic manifestations related to RFC1, although little is known about the pattern and extent of structural brain abnormalities in this condition. Objective The aim is to characterize the structural signature of brain damage in RFC1‐related disorder, correlating the findings with clinical symptoms and normal brain RFC1 expression. Methods We recruited 22 individuals with molecular confirmation of RFC1 expansions and submitted them to high‐resolution 3T magnetic resonance imaging scans. We performed multimodal analyses to assess separately cerebral and cerebellar abnormalities within gray and white matter (WM). The results were compared with a group of 22 age‐ and sex‐matched controls. Results The mean age and disease duration of patients were 62.8 and 10.9 years, respectively. Ataxia, sensory neuronopathy, and vestibular areflexia were the most frequent manifestations, but parkinsonism and pyramidal signs were also noticed. We found that RFC1‐related disorder is characterized by widespread and relatively symmetric cerebellar and basal ganglia atrophy. There is brainstem volumetric reduction along all its segments. Cerebral WM is also involved—mostly the corpus callosum and deep tracts, but cerebral cortical damage is rather restricted. Conclusion This study adds new relevant insights into the pathophysiological mechanisms of RFC1‐related disorder. It should no longer be considered a purely cerebellar and sensory pathway disorder. Basal ganglia and deep cerebral WM are additional targets of damage. © 2021 International Parkinson and Movement Disorder Society
Sprache
Englisch
Identifikatoren
ISSN: 0885-3185
eISSN: 1531-8257
DOI: 10.1002/mds.28711
Titel-ID: cdi_proquest_miscellaneous_2550264900
Format
–
Schlagworte
Ataxia
,
Atrophy
,
Basal ganglia
,
Bilateral Vestibulopathy
,
Brain - diagnostic imaging
,
Brain injury
,
Brain stem
,
CANVAS
,
Central nervous system diseases
,
Cerebellar ataxia
,
Cerebellar Ataxia - genetics
,
Cerebellum
,
Corpus callosum
,
DTI
,
FreeSurfer
,
Humans
,
Magnetic Resonance Imaging
,
Movement disorders
,
MRI
,
Neuroimaging
,
Neuropathy
,
RFC1
,
Sensory neurons
,
Substantia alba
,
Vestibular Diseases - genetics
,
Vestibular system
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