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Docosapentaenoic acid (22:5n-3): a review of its biological effects.
MedLine Citation:
PMID:  20655949     Owner:  NLM     Status:  In-Process    
This article summarizes the current knowledge available on metabolism and the biological effects of n-3 docosapentaenoic acid (DPA). n-3 DPA has not been extensively studied because of the limited availability of the pure compound. n-3 DPA is an elongated metabolite of EPA and is an intermediary product between EPA and DHA. The literature on n-3 DPA is limited, however the available data suggests it has beneficial health effects. In vitro n-3 DPA is retro-converted back to EPA, however it does not appear to be readily metabolised to DHA. In vivo studies have shown limited conversion of n-3 DPA to DHA, mainly in liver, but in addition retro-conversion to EPA is evident in a number of tissues. n-3 DPA can be metabolised by lipoxygenase, in platelets, to form ll-hydroxy-7,9,13,16,19- and 14-hydroxy-7,10,12,16,19-DPA. It has also been reported that n-3 DPA is effective (more so than EPA and DHA) in inhibition of aggregation in platelets obtained from rabbit blood. In addition, there is evidence that n-3 DPA possesses 10-fold greater endothelial cell migration ability than EPA, which is important in wound-healing processes. An in vivo study has reported that n-3 DPA reduces the fatty acid synthase and malic enzyme activity levels in n-3 DPA-supplemented mice and these effects were stronger than the EPA-supplemented mice. Another recent in vivo study has reported that n-3 DPA may have a role in attenuating age-related decrease in spatial learning and long-term potentiation. However, more research remains to be done to further investigate the biological effects of this n-3 VLCPUFA.
Gunveen Kaur; David Cameron-Smith; Manohar Garg; Andrew J Sinclair
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-07-23
Journal Detail:
Title:  Progress in lipid research     Volume:  50     ISSN:  1873-2194     ISO Abbreviation:  Prog. Lipid Res.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7900832     Medline TA:  Prog Lipid Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  28-34     Citation Subset:  IM    
Copyright Information:
Crown Copyright © 2010. Published by Elsevier Ltd. All rights reserved.
Metabolic Research Unit, School of Medicine, Deakin University, Waurn Ponds, 3217 Victoria, Australia.
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