Lipid Biochemistry: An Introduction

Gurr, M. I.; James, A. T.

doi:10.1007/978-94-009-5907-1

Cited by 165 publications

(140 citation statements)

References 2 publications

(2 reference statements)

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“…Second, the presence of high levels of BCSFA (mainly iso-and anteiso-methyl) and ONFA (15:0, 17:0 and 19:0) in the fatty acids of larval liver, kidney and intestine of this study indicates a significant role of benthic detritus, sediment and bacteria in the larval lamprey nutrition, since BCSFA and ONFA are the major fatty acids in bacteria (Christie, 1987;Gurr and Harwood, 1991) and since lampreys did filter-feed on sedimental detritius (Moore and Beamish, 1973;Moore and Mallatt, 1980).…”

Section: Discussionmentioning

confidence: 75%

Differences in the fatty acid composition of larvae and metamorphosing sea lampreys, Petromyzon marinus

Kao

Youson

Vick

et al. 2002

Comparative Biochemistry and Physiology Part B: Biochemistry an

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This study was designed to evaluate biochemical changes in the fatty acid (FA) compositions of selected lipid depot (kidney and liver) and absorption (intestine) organs in larvae and metamorphosing sea lamprey, Petromyzon marinus. Palmitic or stearic acids were generally the predominant saturated fatty acids (SFA) before and during metamorphosis, but the greatest proportion of myristic acid occurred in renal triacylglycerol (TG). Monoenes, dienes, and polyenes consist mainly of 16:1, 18:1, and 20:1, 18:2 and 20:2v6, and 18:4v3, respectively. Alterations in these predominant fatty acids occurred during lamprey metamorphosis, but depended on tissue, lipid class, and developmental status. During metamorphosis, kidney TG and phospholipid (PL) classes tended to mobilize SFA and enhance the fatty acid unsaturation, as indicated by increased unsaturatedysaturated ratio, unsaturation index (USI), and total mean chain length (MCL). There was a tendency to increase saturation in the fatty acids of liver TG and PL classes and intestine TG, FA and monoacylglycerol (MG) classes, but to increase unsaturation in the fatty acids of liver cholesteryl ester (CE), FA and MG classes and intestine PL and CE classes from larva or stage 3 to stage 7. Increased polyunsaturated fatty acids in kidney TG and PL from larvae to stage 5 transformers and intestine PL and CE from stage 3 to stage 7 transformers may reflect an osmoregulatory pre-adaptation. The presence of branched-chain SFA (BCSFA) and the odd number of fatty acids (ONFA) indicated a significant role of detritivores in the benthic larvae. Decreased abundance of BCSFA, ONFA, and 18:2 dienes occurred in the transformed intestine TG as non-trophic metamorphosis proceeded. These data suggest that sea lamprey metamorphosis may proceed in a habitat, dietary, osmoregulatory, energetic, and developmental pre-adaptation of fatty acid composition from benthic filter-feeding larvae to pelagic parasitic juveniles. ᮊ

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Section: Discussionmentioning

confidence: 75%

Differences in the fatty acid composition of larvae and metamorphosing sea lampreys, Petromyzon marinus

Kao

Youson

Vick

et al. 2002

Comparative Biochemistry and Physiology Part B: Biochemistry an

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“…The process of the conversion of saturated to unsaturated fatty acids is catalysed by enzymes (Gurr and Harwood 1991). A flaw associated with the ratios of Leat (1977) is that they do not quantify the activity of the enzymes involved in the conversion.…”

Section: ∆9-desaturasementioning

confidence: 99%

A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle

Malau‐Aduli¹,

Siebert²,

Bottema³

et al. 1997

Aust. J. Agric. Res.

150

101

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The fatty acid composition of the triacylglycerol fraction of shoulder fat from Limousin and Jersey yearling heifers, yearling steers, and non-lactating cows was investigated. Significant breed differences in the degree of fatty acid saturation were apparent between Jersey and Limousin cows, but were not observed in the yearlings. Jersey cows had less saturated fatty acids than the Limousin. Jersey cows showed an increased percentage of monounsaturated fatty acids compared with the Jersey yearlings. In contrast, the level of monounsaturated fatty acids in the Limousin cows was the same as in the Limousin yearlings. The calculated indices of enzyme activities also differed between the breeds. Jersey cows had higher indices of Δ9-desaturase and elongase activities than Limousin. This was also reflected by differences in the ratios of total unsaturated and polyunsaturated to saturated fatty acids. Breed differences were also observed in the triacylglycerol fatty acid chain length. In this case, however, yearlings showed significant breed differences that were not detected in the cows. Limousin yearlings had more long chain fatty acids (C16 and C18) than the Jersey yearlings. Limousin yearlings also had a higher elongase activity index than their Jersey counterparts. Thus, breed and age affect the fatty acid composition in these cattle.

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“…In fact, mixed monolayers of phospholipids and sterols, mainly cholesterol, have already been investigated [15,16], however, we are interested in a detailed study of mixed systems where the proportion of sterols to phospholipids coincides with that of natural membrane. Mammalian membranes contain high proportion of phosphatidylcholines (PC), both saturated and unsaturated [17]. As regards sterols, mammalian cellular membrane contains 30% of cholesterol as compared to 13% of ergosterol in fungi membrane [18].…”

mentioning

confidence: 99%

Interactions between membrane sterols and phospholipids in model mammalian and fungi cellular membranes — A Langmuir monolayer study

Miñones

País

Conde

et al. 2009

Biophysical Chemistry

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To cite this version:J. Miñones, S. Pais, O. Conde, P. Dynarowicz-Łątka. Interactions between membrane sterols and phospholipids in model mammalian and fungi cellular membranes -A Langmuir monolayer study. Biophysical Chemistry, Elsevier, 2009, 140 (1-3) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D

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Lipid Biochemistry: An Introduction

Cited by 165 publications

References 2 publications

Differences in the fatty acid composition of larvae and metamorphosing sea lampreys, Petromyzon marinus

Differences in the fatty acid composition of larvae and metamorphosing sea lampreys, Petromyzon marinus

A comparison of the fatty acid composition of triacylglycerols in adipose tissue from Limousin and Jersey cattle

Interactions between membrane sterols and phospholipids in model mammalian and fungi cellular membranes — A Langmuir monolayer study

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