Smith-Lemli-Opitz syndrome: clinical and biochemical findings in Brazilian patients
Genet. mol. biol
; 29(3): 429-436, 2006. ilus
Article
em En
| LILACS
| ID: lil-450274
Biblioteca responsável:
BR26.1
ABSTRACT
Smith-Lemli-Opitz syndrome (SLOS) or RSH syndrome comprises multiple congenital anomalies and mental retardation. The underlying defect is a deficiency in the activity of delta7-sterol reductase, which decreases cholesterol and increases 7-dehydrocholesterol (7-DHC) levels. Our aim was to identify and evaluate the frequency of SLOS manifestations in a group of Brazilian patients. Based on our own data and those reported previously, we present a simple method that allows the estimation of probabilities favoring the diagnosis of SLOS. We evaluated 30 patients clinically and determined their plasma levels of cholesterol and 7-dehydrocholesterol. In 11 patients, the diagnosis was confirmed by ultraviolet spectrophotometry (UV). Of 19 patients with normal laboratory results, 17 showed a high probability favoring the diagnosis of SLOS. The most significant signs and symptoms observed in over 2/3 of the biochemically confirmed cases were mental retardation (10/11), delayed neuropsychomotor development (10/11), syndactyly of 2nd/3rd toes (10/11), and craniofacial anomalies including microcephaly (11/11), incompletely rotated ears (8/11), palpebral ptosis (10/11), anteverted nostrils (10/11), and micrognathia (9/11). Genital anomalies were found in all male patients (6/6).
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Colesterol
/
Síndrome de Smith-Lemli-Opitz
/
Desidrocolesteróis
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Child
/
Child, preschool
/
Female
/
Humans
/
Male
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article