HMG-CoA reductase inhibitors simvastatin, fluvastatin and fluvastatin enantiomers (0.1 to 5 μM) were utilized to block both mevalonate formation and cholesterol esterification in mouse peritoneal macrophages in the presence of a large excess of cholesterol supplied by acetylated LDL. Supplementation of cultures with mevalonate fully reversed, in a dose-dependent manner, the inhibitory effect of the drugs on cholesterol esterification. Mevalonate alone, in the range of the tested concentrations, did not affect cholesterol esterification in the absence of the HMG-CoA reductase inhibitors, indicating that its effect was linked to the restoration of the endogenous pool depleted by the pharmacological block of HMG-CoA reductase. The inhibitory effect of fluvastatin was also prevented by the non-sterol mevalonate isoprenoid derivative geranylgeraniol. Evaluation of fluvastatin enantiomers demonstrated the stereo-specificity of drug action with most of the effect associated to the antipode with the highest inhibitory activity of HMGCoA reductase. We conclude that mevalonate or a mevalonate product(s), possibly a non-sterol derivative(s), are required in cholesterol esterification induced by acetylated LDL in macrophages

Requirement for mevalonate in acetylated LDL induction of cholesterol esterification in macrophages / Bernini, F.; Didoni, G.; Bonfadini, G.; Bellosta, Stefano; Fumagalli, R.. - In: ATHEROSCLEROSIS. - ISSN 0021-9150. - 104:1-2(1993), pp. 19-26. [10.1016/0021-9150(93)90172-Q]

Requirement for mevalonate in acetylated LDL induction of cholesterol esterification in macrophages

Bernini F.;BELLOSTA, STEFANO;
1993-01-01

Abstract

HMG-CoA reductase inhibitors simvastatin, fluvastatin and fluvastatin enantiomers (0.1 to 5 μM) were utilized to block both mevalonate formation and cholesterol esterification in mouse peritoneal macrophages in the presence of a large excess of cholesterol supplied by acetylated LDL. Supplementation of cultures with mevalonate fully reversed, in a dose-dependent manner, the inhibitory effect of the drugs on cholesterol esterification. Mevalonate alone, in the range of the tested concentrations, did not affect cholesterol esterification in the absence of the HMG-CoA reductase inhibitors, indicating that its effect was linked to the restoration of the endogenous pool depleted by the pharmacological block of HMG-CoA reductase. The inhibitory effect of fluvastatin was also prevented by the non-sterol mevalonate isoprenoid derivative geranylgeraniol. Evaluation of fluvastatin enantiomers demonstrated the stereo-specificity of drug action with most of the effect associated to the antipode with the highest inhibitory activity of HMGCoA reductase. We conclude that mevalonate or a mevalonate product(s), possibly a non-sterol derivative(s), are required in cholesterol esterification induced by acetylated LDL in macrophages
Requirement for mevalonate in acetylated LDL induction of cholesterol esterification in macrophages / Bernini, F.; Didoni, G.; Bonfadini, G.; Bellosta, Stefano; Fumagalli, R.. - In: ATHEROSCLEROSIS. - ISSN 0021-9150. - 104:1-2(1993), pp. 19-26. [10.1016/0021-9150(93)90172-Q]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2839257
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 78
  • ???jsp.display-item.citation.isi??? 74
social impact