Lipid composition of the euphausiids Euphausia vallentini and Thysanoessa macrura during summer in the Southern Indian Ocean

2003 ◽  
Vol 15 (4) ◽  
pp. 463-475 ◽  
Author(s):  
P. MAYZAUD ◽  
M. BOUTOUTE ◽  
F. ALONZO
Keyword(s):  
Fatty Acid ◽  
Indian Ocean ◽  
Developmental Stage ◽  
Lipid Composition ◽  
Wax Esters ◽  
Southern Indian Ocean ◽  
Total Lipids ◽  
Male And Female ◽  
Thysanoessa Macrura ◽  
Alcohol Composition

Two species of euphausiids (Thysanoessa macrura Sars and Euphausia vallentini Stebbing) from the Southern Indian Ocean were analysed for their lipid content, fatty acid and fatty alcohol composition, in relation to developmental stage (T.m) and sex (E.v). Lipid composition showed wax esters and triacylglycerols as main neutral lipids for T. macrura and E. vallentini respectively. Allometric relationships between lipid class and total lipids indicated that changes in total lipids were size dependent and mainly related to wax esters in T. macrura and polar lipids (both phosphatidylcholine or PC and phosphatidylethanolamine or PE) in E. vallentini. No difference in lipid composition could be shown for male and female E. vallentini, while sampling location, developmental stage and sex were significantly influential in T. macrura. In this latter species wax esters displayed relatively similar fatty acid and alcohol composition in both juvenile and female stages, whereas a striking difference could be seen between females and juveniles in terms of polar lipids with a very low PE content in females. Male and female E. vallentini showed little differences in fatty acid structure with the exception of PC in females, which were low in 22:6n-3. The trophic status of these two species was established using multivariate discriminant analysis, which indicated for E. vallentini a degree of omnivory similar to E. superba, while these T. macrura appeared more omnivorous than individuals collected in other areas of the Southern Ocean. Clustering of polar lipid composition suggested a link between differences in PC fatty acid and the post-spawn stage of the female of E. vallentini collected. The same probably applies for the changes in PE recorded for T. macrura females.

In Reply: Lipid Composition of Milk From Mothers With Cystic Fibrosis

PEDIATRICS ◽  
1989 ◽  
Vol 83 (4) ◽  
pp. 632-632
Author(s):  
JOEL BITMAN ◽  
MARGIT HAMOSH ◽  
D. L. WOOD ◽  
L. M. FREED ◽  
P. HAMOSH
Keyword(s):  
Cystic Fibrosis ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Lipid Composition ◽  
Total Lipids ◽  
Energy Needs

This report from Golembeski and Emery adds to the small quantity of literature in this field. Drs Golembeski and Emery claim that they are presenting information that counters our statement,"The abnormalities in fatty acid composition of the cystic fibrosis milk may contraindicate its use for the nursing infant." However, no data regarding fatty acid composition were presented. In their Table, only total lipids are shown. In our study, we acknowledged that mean total lipids were sufficient to supply the energy needs of the nursing infant.

A Quantitative Evaluation of the Lipid Composition of Leaves of Aleurites montana as a Consequence of Growth under 0.3 ppm SO2 in the Atmosphere

1997 ◽  
Vol 52 (5-6) ◽  
pp. 325-328
Author(s):  
P. He ◽  
A. Radunz ◽  
K. P. Bader ◽  
G. H. Schmid
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Lipid Composition ◽  
Thylakoid Membrane ◽  
The Other ◽  
Carotenoid Content ◽  
Total Lipids ◽  
Mitochondrial Membranes ◽  
Light Harvesting Complex ◽  
Β Carotene

Abstract Gassing during 14 days of Aleurites plants with 0.3 ppm SO2 leads to quantitative modifications of the lipid composition of leaves. The ratio of phospholipids to glycolipids is shifted from 1:3 in control plants to 1:1.8 in SO2-plants. Glycolipids decrease from 62% of total lipids in control plants to 50% in SO2-plants. On the other hand phospholipids increase from 20% in control plants to 28% of total lipids in SO2-plants. This implies that not only the thylakoid membrane but also the mitochondrial membranes and cell membranes of tonoplasts and of the plasmalemma suffer modifications under the influence of SO2. With respect to the fatty acid composition, despite the drastic change in the lipid composition no alteration in comparison to control plants is seen. Chlorophylls increase in SO2-plants by 24% . Also the content of β-carotene, and of the xanthophylls lutein, violaxanthin and neoxanthin is increased. Only zeaxanthin exhibits a decrease. From the changes in the chlorophyll and carotenoid content it can be concluded that in SO2-plants the light-harvesting-complex (LHCP) is stronger developed (P. He, A. Radunz, K. P. Bader and G. H. Schmid, Z. f. Naturforsch. 51c, 441- 453 and 833-840, 1996).

Changes in adult Nippostrongylus brasiliensis during the development of immunity to this nematode in rats: 2. Total lipids and neutral lipids

Parasitology ◽  
1971 ◽  
Vol 63 (2) ◽  
pp. 271-274 ◽  
Author(s):  
D. L. Lee
Keyword(s):  
Fatty Acid ◽  
Neutral Lipids ◽  
Fatty Acid Content ◽  
Research Station ◽  
Nippostrongylus Brasiliensis ◽  
Total Lipids ◽  
Male And Female ◽  
University Of Cambridge ◽  
Form Part

SUMMARYThe total lipids and the amount of neutral lipids of male and female N. brasiliensis, from 7-day and 15-day infections, have been studied quantitatively. There is an increase in total lipids from 10·9 ± 2 to 15·5 ± 2 % in females and an increase from 8·4 ± 1 to 14·6 ± 2 % in males. In both sexes there is a rise in cholesterol and trigylceride content and a fall in free fatty acid content. These changes are discussed with reference to the development of immunity of the host to this nematode.I wish to thank Mrs B. Fisher, Mr A. W. Pearson and Mr N. Sykes for assistance during this work. These results form part of a programme of work supported by the A.R.C. while I was at the Molteno Institute, University of Cambridge, and continued at the Houghton Poultry Research Station. I wish to thank Dr P. Tate for accommodation at the Molteno Institute during the early part of this work.

Fonsecaea pedrosoi: lipid composition and determination of susceptibility to amphotericin B

1992 ◽  
Vol 38 (3) ◽  
pp. 209-214 ◽  
Author(s):  
M. H. R. Gomes ◽  
M. A. Resende
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Key Words ◽  
Amphotericin B ◽  
Lipid Content ◽  
Lipid Composition ◽  
Inhibitory Concentration ◽  
Total Lipids ◽  
Fonsecaea Pedrosoi

Conidia and mycelial cells of Fonsecaea pedrosoi ATCC 46428 were obtained for analyses of lipid composition. Total lipids, phospholipids, sterols, and qualitative sterols and fatty acid composition were determined. A higher lipid content was detected in conidia than in mycelial cells of Fonsecaea pedrosoi, which could not be attributed to total sterols and phospholipids. In both forms of this fungus, ergosterol was the only sterol detected. The minimal inhibitory concentration of amphotericin B was lower for conidia than for mycelium. Key words: Fonsecaea pedrosoi, chromoblastomycosis, sterol, amphotericin B, lipid composition.

scholarly journals Comparison of Fatty Acid Contents in Major Lipid Classes of Seven Salmonid Species from Siberian Arctic Lakes

Biomolecules ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 419 ◽  
Author(s):  
Nadezhda N. Sushchik ◽  
Olesia N. Makhutova ◽  
Anastasia E. Rudchenko ◽  
Larisa A. Glushchenko ◽  
Svetlana P. Shulepina ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Natural Populations ◽  
Arctic Lakes ◽  
Lipid Classes ◽  
Total Lipids ◽  
Omega 3 ◽  
Intrinsic Factors ◽  
Siberian Arctic ◽  
Similar Content ◽  
Valuable Compounds

Long-chain omega-3 polyunsaturated fatty acids (LC-PUFA) essential for human nutrition are mostly obtained from wild-caught fish. To sustain the LC-PUFA supply from natural populations, one needs to know how environmental and intrinsic factors affect fish fatty acid (FA) profiles and contents. We studied seven Salmoniformes species from two arctic lakes. We aimed to estimate differences in the FA composition of total lipids and two major lipid classes, polar lipids (PL) and triacylglycerols (TAG), among the species and to evaluate LC-PUFA contents corresponding to PL and TAG in muscles. Fatty acid profiles of PL and TAG in all species were characterized by the prevalence of omega-3 LC-PUFA and C16-C18 monoenoic FA, respectively. Fish with similar feeding spectra were identified similarly in multivariate analyses of total lipids, TAG and PL, due to differences in levels of mostly the same FA. Thus, the suitability of both TAG and total lipids for the identification of the feeding spectra of fish was confirmed. All species had similar content of LC-PUFA esterified as PL, 1.9–3.5 mg g−1, while the content of the TAG form strongly varied, from 0.9 to 9.8 mg g−1. The LC-PUFA-rich fish species accumulated these valuable compounds predominately in the TAG form.

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