| Phospholipid distribution and phospholipid fatty acids of the tropical tunicates Eudistoma sp. and Leptoclinides uniorbis. | |
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MedLine Citation:
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PMID: 20213322 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two tunicates, Eudistoma sp. and Leptoclinides uniorbis, collected from the tropical waters off Djibouti were investigated for lipids and phospholipid (PL) fatty acids. PL accounted for 38.2% of the total lipids in Eudistoma sp. and for 30.2% in L. uniorbis. PL classes were quantified by normal-phase high-performance liquid chromatography using an evaporative light-scattering detector and revealed essential differences. Eudistoma sp. contained mainly phosphatidylcholine (PC, 70.3% of total PL) and lysophosphatidylcholine (LPC, 11.9%) and was devoid of phosphatidylserine (PS), whereas the major PL of L. uniorbis was PS (59.1%) followed by PC (22.5%) and LPC (8.8%). Gas chromatography-mass spectrometry analyses of fatty acid (FA) derivatives revealed 38 FA in Eudistoma sp., and 35 FA in L. uniorbis, ranged from C(12) to C(24) chain lengths. Polyunsaturated FA accounted for 25.9% in Eudistoma sp. and for 32.3% in L. uniorbis. Interestingly, L. uniorbis contained a high percentage (16.7%) of the 20:5n-3 acid (8.9% in Eudistoma sp.) and the 18:4n-3 acid (4.1%). Significant levels of the 20:4n-6 acid were observed in both organisms (7.8 and 6.0% respectively). Eudistoma sp. contained the rare 20:3n-7 acid (2.3%) only recorded to date in hydrothermal vent animals. The cyclopropane dihydrosterculic acid was identified in both tunicates (0.7 and 0.5% respectively). These latter FA, together with some unusual branched saturated and monounsaturated FA, revealed the occurrence of associated bacteria in the tunicates. Another noticeable feature was a series of eight C(16) to C(18) aldehyde dimethylacetals revealing the presence of plasmalogens at 5.0% in Eudistoma sp. and 14.2% in L. uniorbis. The results of this study were compared with those previously published for other tunicates regarding mainly PL content and FA composition. |
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Authors:
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Flore Dagorn; Justine Dumay; Ga?tane Wielgosz-Collin; Vony Rabesaotra; Mich?le Viau; Claude Monniot; Jean-Fran?ois Biard; Gilles Barnathan |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-02-21 |
Journal Detail:
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Title: Lipids Volume: 45 ISSN: 1558-9307 ISO Abbreviation: Lipids Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-09 Completed Date: 2010-05-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0060450 Medline TA: Lipids Country: Germany |
Other Details:
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Languages: eng Pagination: 253-61 Citation Subset: IM |
Affiliation:
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Groupe MMS, EA 2160, Equipe Lipides marins ? activit? biologique, Universit? de Nantes, Facult? de pharmacie, 1 rue G. Veil, BP 53508, 44035, Nantes Cedex 1, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Djibouti Fatty Acids / analysis* Gas Chromatography-Mass Spectrometry Phospholipids / analysis* Seawater Tropical Climate Urochordata / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids; 0/Phospholipids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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