Type-C Niemann-Pick disease: low density lipoprotein uptake is associated with premature cholesterol accumulation in the Golgi complex and excessive cholesterol storage in lysosomes.
Proc Natl Acad Sci U S A
; 85(21): 8022-6, 1988 Nov.
Article
em En
| MEDLINE
| ID: mdl-3186703
ABSTRACT
Incubation of fibroblasts derived from patients with type-C Niemann-Pick disease with low density lipoprotein results in excessive intracellular accumulation of unesterified cholesterol. Cytochemical techniques revealed that this abnormal cholesterol accumulation is associated not only with a massive storage of cholesterol in lysosomes but also with a premature cholesterol enrichment of the Golgi complex. Cholesterol appeared also in the Golgi complex of some normal fibroblasts after 24 hr of low density lipoprotein loading. These findings indicate that components of the Golgi complex play a role in the intracellular translocation of exogenously derived cholesterol and that disruptions of the cholesterol transport pathway at the Golgi may, in part, be responsible for the deficiency in cholesterol utilization in type-C Niemann-Pick fibroblasts.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças de Niemann-Pick
/
Colesterol
/
Complexo de Golgi
/
Lipoproteínas LDL
/
Lisossomos
Tipo de estudo:
Risk_factors_studies
Limite:
Humans
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
1988
Tipo de documento:
Article