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Lipid-lowering efficacy of 3,4-di(OH)-phenylpropionic L-leucine in high-cholesterol fed rats
- Source :
- Journal of biochemical and molecular toxicology. 19(1)
- Publication Year :
- 2005
-
Abstract
- A preliminary study revealed that 3,4-di(OH)-hydrocinnamate (HC), a polyphenolic compound, lowered the plasma lipids in high-cholesterol fed rats. Accordingly, this study was designed to test the lipid-lowering efficacy of a synthetic derivative, 3,4-di(OH)-phenylpropionic (L-leucine) amide (PPLA), in rats fed a high-cholesterol (1%, wt/wt) diet. As such, HC or PPLA was given as supplement to a high-cholesterol diet for 6 weeks at a dose of 0.137 mmol/100 g diet. The supplementation of HC and PPLA significantly lowered the plasma and hepatic cholesterol and triglyceride levels compared to the control group. The activities of hepatic HMG-CoA reductase (164 ± 9.12 and 124.74 ± 17.09 pmol/min/mg protein vs. 245.41 ± 13.01 pmol/min/mg protein, p < 0.05) and ACAT (411.49 ± 11.48 and 334.35 ± 17.68 pmol/min/mg protein vs. 490.41 ± 16.69 pmol/min/mg protein, p < 0.05) were significantly lower in the HC- and PPLA-supplemented groups than in the control group. However, PPLA was more effective in inhibiting the enzyme activities than HC. The excretion of neutral sterol was significantly higher in HC- and PPLA-supplemented groups than in the control group. Therefore, these results indicate that PPLA, a leucine-attached version of HC, exhibited a similar significant hypocholesterolemic effect to HC in rats fed a high-cholesterol diet. © 2005 Wiley Periodicals, Inc. J Biochem Mol Toxicol 19:25–31, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/jbt.20054
- Subjects :
- Male
medicine.medical_specialty
Health, Toxicology and Mutagenesis
Sterol O-acyltransferase
Reductase
Toxicology
Weight Gain
Biochemistry
High cholesterol
Excretion
Cholesterol, Dietary
Rats, Sprague-Dawley
chemistry.chemical_compound
Feces
Caffeic Acids
Leucine
Internal medicine
medicine
Animals
Molecular Biology
Triglyceride
Molecular Structure
Cholesterol
General Medicine
Organ Size
medicine.disease
Lipid Metabolism
Animal Feed
Lipids
Sterol
Rats
Sterols
Endocrinology
chemistry
Liver
Molecular Medicine
Hydroxymethylglutaryl CoA Reductases
Subjects
Details
- ISSN :
- 10956670
- Volume :
- 19
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of biochemical and molecular toxicology
- Accession number :
- edsair.doi.dedup.....a44042175cbe78c0006b5b570acd454b