Cholesterol-rich LDL perfused at physiological LDL-cholesterol concentration induces platelet aggregation and PAF-acetylhydrolase activation.
Biomed Pharmacother
; 45(1): 37-42, 1991.
Article
em En
| MEDLINE
| ID: mdl-2043757
ABSTRACT
The aim of this research was to perform an in vivo study on the relationships between lipid oxide (LP), platelet aggregation and PAF-acetylhydrolase in a model using perfusion of cholesterol-rich LDL media diluted to physiological LDL-cholesterol concentration. Normal rabbits were infused with LDL (d 1.025-1.063 g/ml) extracted from rabbits previously fed either with standard food (I-LDL group), 1% cholesterol food (II-LDL group) or 1% cholesterol plus probucol (IV-LDL group). CU2+ modified II-LDL was also infused (III-LDL group). After dilution as above, LP increased significantly in III- and II-LDL media. After perfusion, LP significantly increased in III- and II-LDL groups as compared to baseline values and to control. Compared to the I-LDL group, PAF-acetylhydrolase and platelet aggregation significantly increased in III- and II-LDL groups. These data indicate the property of cholesterol- rich LDL to activate PAF-acetylhydrolase and enhance platelet aggregation, even when perfused through a medium containing a physiological LDL-cholesterol concentration.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfolipases A
/
Agregação Plaquetária
/
LDL-Colesterol
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Biomed Pharmacother
Ano de publicação:
1991
Tipo de documento:
Article
País de afiliação:
China