Plasma and Hepatic Cholesterol and Hepatic Activities of 3-Hydroxy-3-methyl-glutaryl-CoA Reductase and Acyl CoA: Cholesterol Transferase Are Lower in Rats Fed Citrus Peel Extract or a Mixture of Citrus Bioflavonoids
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چکیده
منابع مشابه
Association of Cognitive Impairment in Patients on 3-Hydroxy-3-Methyl-Glutaryl-CoA Reductase Inhibitors
BACKGROUND Atherosclerotic cardiovascular diseases are the leading cause of death in the United States. A reduction in cholesterol with 3-hydroxy-3-methyl-glutaryl-CoA reductase inhibitors (statin) significantly reduces mortality and morbidity. Statins may be associated with cognitive impairment or dementia. Our aim was to study the association of cognitive impairment or dementia in patients wh...
متن کاملModulation of 3-hydroxy-3-methylglutaryl-CoA reductase and of acyl-CoA--cholesterol acyltransferase by the transfer of non-esterified cholesterol to rat liver microsomal vesicles.
The incubation of rat liver microsomal fraction with a serum preparation followed by the re-isolation of the microsomal membranes has resulted in an increase in the concentration of non-esterified cholesterol, a considerable decrease in the activity of 3-hydroxy-3-methylglutaryl-CoA reductase and in an increase in the activity of acyl-CoA-cholesterol acyltransferase in the treated microsomal pr...
متن کاملA relationship between the activities of hepatic lanosterol 14 alpha-demethylase and 3-hydroxy-3-methylglutaryl-CoA reductase.
At 1-2 h after intragastric administration of ketoconazole, a cytochrome P-450 inhibitor, to rats, there was a 50-60% decrease in the activity of hepatic 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase. Inhibition reached a maximum at 6-12 h after the drug was given, but after 24 h enzyme activity was stimulated by 60%. The rates of synthesis of hepatic non-saponifiable lipids in vivo showed...
متن کاملThe effect of clotrimazole and triadimefon on 3-hydroxy-3-methyl-glutaryl-CoA-reductase-[EC 1.1.1.34]-activity in Saccharomyces cerevisiae.
Clotrimazole and triadimefon are known as potent inhibitors of ergosterol synthesis in pathogenic yeast and fungi, respectively. As their mode of action generally the inhibition of sterol desmethylation reactions is accepted. We report about a second effect, a "feed-back" inhibition of 3-hydroxy-3-methyl-glutaryl (HMG)-CoA-reductase by accumulation of ergosterol precursors. Addition of lanoster...
متن کاملRegulation of hepatic 3-hydroxy-3-methylglutaryl coenzyme A reductase and cholesterol synthesis.
Rat liver microsomal 3-hydroxy-3-methylglutaric acid (HMG)-coenzyme A reductase (mevalonate:NADP oxidoreductase (acylating CoA), EC 1.1.1.34) exhibits a cyclic rhythm with peak activity at midnight. HMG-CoA reductase from microsomes of rats killed at noon and midnight has similar properties. Cycloheximide completely prevents the 5to IO-fold rise in activity which occurs from 6 p.m. to midnight,...
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ژورنال
عنوان ژورنال: The Journal of Nutrition
سال: 1999
ISSN: 0022-3166,1541-6100
DOI: 10.1093/jn/129.6.1182