| Ascorbic acid protects against peroxidative modification of low-density lipoprotein, maintaining its recognition by LDL receptors. | |
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MedLine Citation:
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PMID: 11349887 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Peroxidatively modified low-density lipoprotein (LDL) may contribute to atherosclerotic processes; therefore, protecting LDL against peroxidation may thus reduce or retard the progression of atherosclerosis. We have evaluated the protective effects of ascorbic acid on copper-catalyzed LDL peroxidative modification. The protective effects of ascorbic acid on copper-catalyzed LDL peroxidative modification were examined by measurement of concentration of lipid hydroperoxides in LDL and by the provision of LDL cholesterol to lymphocytes via LDL receptor-mediated pathway. The measurement of concentration of lipid hydroperoxides in LDL showed that ascorbic acid inhibited peroxidative modification of LDL. Also, ascorbic acid preserved the ability of LDL to be recognized by LDL receptors in peripheral blood lymphocytes to the same extent as native LDL. These findings indicate that ascorbic acid may protect LDL against peroxidative modification, maintaining its ability to act as a ligand for LDL receptors in vivo. |
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Authors:
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N Sakuma; M Yoshikawa; A Hibino; A Sato; Y Kamiya; N Ohte; N Tamai; M Kijnimatsu; G Kimura; M Inoue |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of nutritional science and vitaminology Volume: 47 ISSN: 0301-4800 ISO Abbreviation: J. Nutr. Sci. Vitaminol. Publication Date: 2001 Feb |
Date Detail:
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Created Date: 2001-05-14 Completed Date: 2002-02-04 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0402640 Medline TA: J Nutr Sci Vitaminol (Tokyo) Country: Japan |
Other Details:
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Languages: eng Pagination: 28-31 Citation Subset: IM |
Affiliation:
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The Third Department of Internal Medicine, Nagoya City University Medical School, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Antioxidants / pharmacology* Arteriosclerosis Ascorbic Acid / pharmacology* Cells, Cultured Cholesterol, LDL / blood Copper / pharmacology Free Radical Scavengers / pharmacology* Humans Ligands Lipid Peroxidation / drug effects* Lipid Peroxides / blood Lipoproteins, LDL / blood, metabolism* Lymphocytes / metabolism Receptors, LDL / metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Antioxidants; 0/Cholesterol, LDL; 0/Free Radical Scavengers; 0/Ligands; 0/Lipid Peroxides; 0/Lipoproteins, LDL; 0/Receptors, LDL; 50-81-7/Ascorbic Acid; 7440-50-8/Copper |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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