Motor and mental dysfunction in mother-daughter transmitted FXTAS
Por:
Rodriguez-Revenga, L, Pagonabarraga, J, Gomez-Anson, B, Lopez-Mourelo, O, Madrigal, I, Xuncla, M, Kulisevsky, J, Mila, M
Publicada:
12 oct 2010
Resumen:
Objectives: Fragile X-associated tremor/ataxia syndrome (FXTAS) is a late-onset neuropsychiatric degenerative disorder that occurs predominantly in male FMR1 premutation carriers. Recently, a broader FXTAS spectrum that, besides the core features of tremor and gait ataxia, also includes neuropsychiatric symptoms and neuropathy as further clinically relevant symptoms has been described among females. Herein 2 fragile X syndrome families with a mother-daughter FXTAS transmission are described in detail in order to shed more light on the female FXTAS phenotype.
Methods: Molecular characterization included CGG repeat length, X-chromosome inactivation pattern determination, as well as FMR1 mRNA and FMRP levels quantification. Neuroradiologic examination was performed by 3-T MRI. Neuropsychological assessment included global cognitive, attention, and executive prefrontal functions, verbal fluencies, verbal memory, and visuospatial perception.
Results: Molecular, neurologic, neuropsychiatric, psychological, cognitive, and neuroradiologic features description of 2 fragile X syndrome families with a mother-daughter FXTAS transmission in which dementia is present in both mothers.
Conclusions: Although it is not yet clear to what extent FXTAS shortens lifespan, our findings show that FXTAS progresses from mild tremor and/or ataxia to disabling motor and cognitive impairment, compromising the patients' quality of life. Furthermore, our results show that FXTAS in women can also develop as a multisystem neurodegenerative disorder with central and peripheral nervous system involvement, and both motor and mental disturbances. Neurology (R) 2010;75:1370-1376
Filiaciones:
Rodriguez-Revenga, L:
CIBER Enfermedades Raras CIBERER, Barcelona, Spain
Pagonabarraga, J:
Hosp Santa Creu & Sant Pau, Dept Radiol, Neurol Serv, Barcelona, Spain
CIBER Enfermedades Neurodegenerat CIBERNED, Barcelona, Spain
Gomez-Anson, B:
Hosp Santa Creu & Sant Pau, Dept Radiol, Neuroradiol Unit, Barcelona, Spain
CIBER Enfermedades Neurodegenerat CIBERNED, Barcelona, Spain
Lopez-Mourelo, O:
Hosp Santa Creu & Sant Pau, Fundacio Recerca, Barcelona, Spain
Univ Autonoma Barcelona, IFAE, PIC, Barcelona, Spain
Madrigal, I:
CIBER Enfermedades Raras CIBERER, Barcelona, Spain
Xuncla, M:
Fundacio Clin Recerca Biomed, Barcelona, Spain
Kulisevsky, J:
Hosp Santa Creu & Sant Pau, Dept Radiol, Neurol Serv, Barcelona, Spain
CIBER Enfermedades Neurodegenerat CIBERNED, Barcelona, Spain
Mila, M:
Hosp Clin Barcelona, Biochem & Mol Genet Serv, Biochem & Mol Genet Dept, E-08036 Barcelona, Spain
CIBER Enfermedades Raras CIBERER, Barcelona, Spain
IDIBAPS, Barcelona, Spain
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