scholarly journals Two 1-Alkyl-2-acyl Choline Glycerophospholipids Having an Arachidonoyl or Eicosapentaenoyl Group, from the Clam Worm (Marphysa sanguinea).

1995 ◽  
Vol 43 (1) ◽  
pp. 156-158 ◽  
Author(s):  
Ryuichiro TANAKA ◽  
Atsutoshi HASHIMOTO ◽  
Naoki NODA ◽  
Kazumoto MIYAHARA
Keyword(s):  
Choline Glycerophospholipids ◽  
Marphysa Sanguinea

scholarly journals Erythrocruorin of Marphysa sanguinea. Isolation and some physical, physicochemical and other properties

1965 ◽  
Vol 95 (3) ◽  
pp. 577_b1-577_b1
Author(s):  
M. Y. CHEW ◽  
P. B. SCUTT ◽  
I. T. OLIVER ◽  
J. W. H. LUGG
Keyword(s):  
Marphysa Sanguinea

scholarly journals A new species of the Marphysa sanguinea complex from French waters (Bay of Biscay, NE Atlantic) (Annelida, Eunicidae)

ZooKeys ◽  
2017 ◽  
Vol 716 ◽  
pp. 1-17 ◽  
Author(s):  
Nicolas Lavesque ◽  
Guillemine Daffe ◽  
Paulo Bonifácio ◽  
Pat Hutchings
Keyword(s):  
New Species ◽  
Bay Of Biscay ◽  
Ne Atlantic ◽  
A New Species ◽  
Marphysa Sanguinea

Hemerythrin-related antimicrobial peptide, msHemerycin, purified from the body of the Lugworm, Marphysa sanguinea

2016 ◽  
Vol 57 ◽  
pp. 49-59 ◽  
Author(s):  
Jung-Kil Seo ◽  
Bo-Hye Nam ◽  
Hye-Jin Go ◽  
Minkyeong Jeong ◽  
Ki-Young Lee ◽  
...  
Keyword(s):  
Antimicrobial Peptide ◽  
The Body ◽  
Marphysa Sanguinea

scholarly journals Lipid remodelling during epididymal maturation of rat spermatozoa. Enrichment in plasmenylcholines containing long-chain polyenoic fatty acids of the n-9 series

1992 ◽  
Vol 283 (1) ◽  
pp. 235-241 ◽  
Author(s):  
M I Aveldaño ◽  
N P Rotstein ◽  
N T Vermouth
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Acyl Chain ◽  
Sperm Maturation ◽  
High Concentration ◽  
Lipid Domain ◽  
Choline Glycerophospholipids ◽  
Epididymal Maturation ◽  
Acyl Chains ◽  
Long Chain

In their transit from the caput to the cauda segments of the epididymis, rat spermatozoa undergo significant modifications in lipid content and composition. The amount of lipid phosphorus per cell decreases, and most lipid classes show specific changes in their constituent fatty acids. A depletion of phosphatidylcholine and phosphatidylethanolamine, concomitant with a virtually unchanged amount of the corresponding plasmalogens, are the major alterations, plasmenylcholine thereby becoming the major phospholipid. Diphosphatidylglycerol, sphingomyelin and the phosphoinositides decrease to a lesser extent or do not change at all, also resulting in relative increases with sperm maturation. Concerning the fatty acids, the proportions of oleate (C18:1, n-9) and linoleate (C18:2, n-6) in most lipids decrease on movement of sperm from caput to cauda, augmenting in turn the proportions of longer-chain (C20 to C24) and more unsaturated fatty acids. Docosapentaenoate (C22:5, n-6) is a major acyl chain present in all lipids at both stages, but uncommon long-chain polyenoic fatty acids of the n-9 series are also present, being almost exclusively found in the choline glycerophospholipids. These fatty acids are found to undergo the most significant changes during sperm maturation. They are minor components of plasmenylcholine in immature spermatozoa, but increase severalfold on maturation, representing more than half of the acyl chains of this major lipid in cells from the cauda. The high concentration of n-9 polyenes in mature sperm plasmenylcholine raises intriguing questions on the possible role epididymal cells may play in providing spermatozoa with such an unusual phospholipid. These plasmenylcholines could contribute to the characteristic lipid domain organization of the mature spermatozoa plasma membrane.

scholarly journals Oestradiol-induced changes in the composition of phospholipid classes of quail oviduct: specific replacement of arachidonic acid by docosahexaenoic acid in alkenylacyl-glycerophosphoethanolamine

1994 ◽  
Vol 301 (2) ◽  
pp. 361-366 ◽  
Author(s):  
B E Felouati ◽  
J F Pageaux ◽  
J M Fayard ◽  
M Lagarde ◽  
C Laugier
Keyword(s):  
Cell Proliferation ◽  
Arachidonic Acid ◽  
Molecular Species ◽  
Phospholipid Composition ◽  
Oestrogen Treatment ◽  
Ethanolamine Glycerophospholipids ◽  
Striking Result ◽  
Choline Glycerophospholipids ◽  
Phospholipid Classes ◽  
Induced Changes

The phospholipid composition and the molecular species of the major subclasses of ethanolamine and choline glycerophospholipids were determined during the natural or oestradiol-induced development of the quail oviduct. The phospholipid concentration increased significantly during oviduct development, and the proportion of ethanolamine glycerophospholipids (EPL) remained constant while that of choline glycerophospholipids increased. The immature oviduct contained the majority of its endogenous arachidonic acid mass (71%) in EPL, mainly in alkenylacyl-glycerophosphoethanolamine (alkenylacyl-GPE) (49% of the total). Oestrogen treatment induced the depletion of 20:4,n-6 specifically from this pool, which indicates the biological importance of 20:4,n-6 molecular species in alkenylacyl-GPE as substrates for the oviduct phospholipases activated by oestradiol, and suggests that this EPL subclass is involved in the oestrogen-induced cell proliferation. Another striking result was the marked increase in 22:6,n-3 EPL molecular species following the oestradiol treatment and more particularly the strict substitution of 20:4,n-6 by 22:6,n-3 in alkenylacyl-GPE. We speculate that alkenylacyl-GPE molecular species containing 22:6,n-3 may participate in the arrest of oestrogen-induced proliferation.

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