Síndrome de Williams: estudio clínico, citogenético, neurofisiológico y neuroanatómico / Williams syndrome: clinical, cytogenetic, neurophysiological and neuroanatomic features in 44 patients
Rev. méd. Chile
;
130(6): 631-637, jun. 2002. ilus, tab
Article
in Spanish
| LILACS
| ID: lil-317494
RESUMO
Background:
Williams syndrome (WS) is a genetically based disorder caused by deletion of elastin and contiguous genes on chromosome 7q11.23. This syndrome is characterized by multiorganic involvement with dysmorphic facial features and a distinctive cognitive profile. It is an interesting model for elucidation of relationships between brain, cognition and genes. Patients have a visual-spatial cognition impaired with relative strengths in social and language abilities.Aim:
To report clinical, cytogenetic, neurophysiological and neuroanatomic features in 44 patients referred as WS. Patients andmethods:
Forty four patients, aged 2 to 17 years, with the clinical diagnosis of Williams syndrome were studied with fluorescence in situ hybridization (FISH). In three cases, electrophysiological and neuroimaging studies were performed.Result:
The deletion was confirmed in 23 patients. In three patients with neurophysiological studies, event related potentials suggested a cognitive difficulty in detecting and processing visual stimuli. Magnetic resonance imaging showed normal brain morphology. SPECT showed hypoperfusion of the right frontal lobe and bilateral anterior cingulum hyperperfusion.Conclusions:
There are functional alterations in the brains of patients with Williams, which may be related to the cognitive deficits
Full text:
Available
Index:
LILACS (Americas)
Main subject:
In Situ Hybridization, Fluorescence
/
Williams Syndrome
Type of study:
Diagnostic study
/
Prognostic study
Limits:
Adolescent
/
Child, preschool
/
Female
/
Humans
/
Male
Language:
Spanish
Journal:
Rev. méd. Chile
Journal subject:
Medicine
Year:
2002
Type:
Article
/
Project document
Affiliation country:
Chile
Institution/Affiliation country:
Clínica Las Condes/CL
/
Universidad de Chile/CL
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