Document Detail


A synopsis of the process of lipid peroxidation since the discovery of the essential fatty acids.
MedLine Citation:
PMID:  20674543     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Eighty years ago, Burr and Burr, introduced for the first time the concept of essential fatty acids. Now is very well known that requirements for polyunsaturated fatty acids PUFAs can not be met by de novo metabolic processes within mammalian tissues. Animals are absolutely dependent on plants for providing the two major precursors of the n-6 and n-3 fatty acids, C18:2n-6; linoleic and C18:3n-3; alpha-linolenic acids. In animal tissues these precursors are transformed to fatty acids containing three to six double bonds. During the last four decades the interest in polyunsaturated fatty acids has augmented manifolds, and the number of published studies is rising each year. The current impetus for this interest has been mainly the observation that PUFAs and their metabolites have several physiological roles including: energy provision, membrane structure, cell signaling and regulation of gene expression. In addition the observation that PUFAs are targets of lipid peroxidation opens a new important area of investigation. Melatonin, the main secretory product of the pineal gland, efficiently scavenges both the hydroxyl and peroxyl radicals counteracting lipid peroxidation in biological membranes. In addition the two key pineal biochemical functions, lipoxygenation and melatonin synthesis may be synergistically regulated by the status of n-3 essential fatty acids. At the retina level, free radicals may preferentially react with the membrane polyunsaturated fatty acids leading to the release of lipoperoxide radicals. These lipoperoxides can induce oxidative stress linked to membrane lysis, damage to neuronal membranes may be related to alteration of visual function.
Authors:
Angel Catalá
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Publication Detail:
Type:  Historical Article; Journal Article; Research Support, Non-U.S. Gov't; Review     Date:  2010-07-30
Journal Detail:
Title:  Biochemical and biophysical research communications     Volume:  399     ISSN:  1090-2104     ISO Abbreviation:  Biochem. Biophys. Res. Commun.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-30     Completed Date:  2010-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372516     Medline TA:  Biochem Biophys Res Commun     Country:  United States    
Other Details:
Languages:  eng     Pagination:  318-23     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier Inc. All rights reserved.
Affiliation:
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, (INIFTA-CCT La Plata-CONICET), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina. catala@inifta.unlp.edu.ar
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MeSH Terms
Descriptor/Qualifier:
Animals
Cell Membrane / metabolism
Fatty Acids, Essential / chemistry,  history,  metabolism*
History, 20th Century
History, 21st Century
Humans
Lipid Peroxidation*
Nutritional Requirements
Oxidation-Reduction*
Pineal Gland / metabolism
Reactive Oxygen Species / history,  metabolism*
Retina / metabolism
Chemical
Reg. No./Substance:
0/Fatty Acids, Essential; 0/Reactive Oxygen Species

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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