5,9,23-triacontatrienoic acid, principal fatty acid of the marine spongeChondrilla nucula

Lipids ◽  
1980 ◽  
Vol 15 (3) ◽  
pp. 200-202 ◽  
Author(s):  
Carter Litchfield ◽  
John Tyszkiewicz ◽  
Virginia Dato
Keyword(s):  
Fatty Acid ◽  
Principal Fatty Acid

(R)-13-hydroxy- -9, -11-octadecadienoic acid, the principal fatty acid from wall. seed oil

1966 ◽  
Vol 7 (36) ◽  
pp. 4329-4334 ◽  
Author(s):  
W.H. Tallent ◽  
Jeanne Harris ◽  
I.A. Wolff ◽  
R.E. Lundin
Keyword(s):  
Fatty Acid ◽  
Seed Oil ◽  
Octadecadienoic Acid ◽  
Principal Fatty Acid

scholarly journals Metabolism of fatty acids by bovine spermatozoa

1972 ◽  
Vol 127 (2) ◽  
pp. 375-385 ◽  
Author(s):  
A. R. Neill ◽  
C. J. Masters
Keyword(s):  
Fatty Acid ◽  
Myristic Acid ◽  
Major Phospholipid ◽  
Principal Fatty Acid ◽  
Phospholipid Classes ◽  
Bovine Spermatozoa ◽  
Oleic And Linoleic Acids ◽  
High Metabolic Activity

The incorporation of 14C-labelled myristic, palmitic, stearic, oleic and linoleic acids in vitro into the lipids of bovine spermatozoa was measured at intervals from 2min to 2h. All acids were rapidly incorporated into diglycerides, myristic acid being metabolized to the greatest extent. Whereas the low incorporation of acids into total phospholipids reflected the relative stability of the major phospholipid fractions in sperm, the minor phospholipids, particularly phosphatidylinositol, showed comparatively high metabolic activity. Although, in general, saturated acids were incorporated more actively than unsaturated substrates, stearic acid was poorly incorporated into all lipids except phosphatidylinositol. In regard to fatty acid composition of sperm lipids it was notable that diglycerides contained myristic acid as the major component, and this acid was also a prominent moiety of phosphatidylinositol. Docosahexaenoic acid was the principal fatty acid of the major phospholipid classes. These findings have been discussed in relation to the role of lipids in the metabolism of spermatozoa.

scholarly journals Characterization of pulmonary surfactant from ox, rabbit, rat and sheep

1975 ◽  
Vol 151 (3) ◽  
pp. 707-714 ◽  
Author(s):  
J L Harwood ◽  
R Desai ◽  
P Hext ◽  
T Tetley ◽  
R Richards
Keyword(s):  
Fatty Acid ◽  
Pulmonary Surfactant ◽  
Amino Acid Residues ◽  
Minor Constituent ◽  
Hexadecanoic Acid ◽  
Pulmonary Surfactants ◽  
Hydrophobic Amino Acid ◽  
Principal Fatty Acid ◽  
A Minor

1. Pulmonary surfactants from ox, rabbit, rat and sheep were isolated and analysed. 2. All preparations had a high anenoic phosphatidylcholine content and would produce stable surface tensions of 0.01 Nm−1 or less. 3. Protein content was 8-18% of the dry weights. A number of proteins were observed; their overall composition were high in hydrophobic amino acid residues. 4. Lipid content varied from 79% (ox) to 90% (rabbit) with phosphatidylcholine representing from 58% (sheep) to 83% (rabbit) of the total lipid. The surfactant preparations were rather similar in lipid composition except that sheep surfactant contained about 10% lysophosphatidylcholine. 5. Hexadecanoic acid was the principal fatty acid. It was particularly high in phosphatidylcholine. 6. Phosphatidylglycerol was a minor constituent of all surfactants but phosphatidyldimethylethanolamine was not detected.

scholarly journals Chemical Characterization of the Lipophilic Fraction of Livistona Decipiens and Livistona Chinensis Fruit Pulps (Palmae) and Assessment of Their Anti-hyperlipidemic and Anti-ulcer Activities

2009 ◽  
Vol 4 (2) ◽  
pp. 1934578X0900400
Author(s):  
Hazem Kadry ◽  
Soha Shoala ◽  
Omayma El Gindi ◽  
Amany A. Sleem ◽  
Salwa Mosharrafa ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Chemical Characterization ◽  
Gas Chromatography Mass Spectrometry ◽  
Rat Stomach ◽  
Principal Fatty Acid ◽  
Palm Fruits ◽  
Livistona Chinensis ◽  
First Time ◽  
The Relationship

The oil of the dried pulps of Livistona decipiens and L. chinensis palm fruits have been studied for the first time by gas chromatography-mass spectrometry for their unsaponifiable matter (USM) and fatty acid composition (FAME). The anti-hyperlipidemic and anti-ulcer activities for both oils were also assayed. The principal fatty acid of L. decipiens pulp oil was oleic acid (53.4 %) and of L. chinensis pulp oil palmitic acid (47.4 %). In relation to anti-hyperlipidemic properties, the pulp oil of L. decipiens presented a better profile than that of L. chinensis, in comparison with the reference standard (simvastatin). In addition, both pulp oils showed high anti-ulcer activity using an indomethacin-induced ulceration technique in rat stomach. The relationship between the anti-hyperlipidemic, anti-ulcer and chemical composition of the pulp oils is also discussed.

THE LIPIDS OF LIPOMYCES LIPOFER

1967 ◽  
Vol 45 (2) ◽  
pp. 171-178 ◽  
Author(s):  
Frances A. McElroy ◽  
H. B. Stewart
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Neutral Lipids ◽  
Lipid Synthesis ◽  
Triglyceride Fraction ◽  
Principal Fatty Acid ◽  
High Lipid ◽  
Total Fatty Acids ◽  
Lipomyces Lipofer ◽  
Chromatographic Evidence

As a preliminary to the study of lipid synthesis in Lipomyces lipofer, the nature of the lipid accumulated by this organism was investigated. Neutral lipids were found to predominate, especially in older cultures of high lipid content. The triglyceride fraction was the major component, with smaller quantities of hydrocarbon, free and esterified ergosterol, monoglyceride, diglyceride, and free fatty acid also present. Phosphatid-y-linositol constituted almost one-quarter of the phospholipid fraction. The phosphoglycerides of choline, serine and ethanolamine were also detected. Gas chromatographic evidence indicated that 16:0, 16:1, 18:0, 18:1, 18:2, 18:3 were the principal fatty acid components. The 18:1 fraction was shown by oxidative-cleavage studies to be primarily oleic acid. This fraction predominated, reaching a level of 69% of the total fatty acids in older cultures.

Fatty acid release in incubations of serum with synaptosome and myelin subfractions of brain

1990 ◽  
Vol 68 (1) ◽  
pp. 148-153 ◽  
Author(s):  
R. Roy Baker ◽  
Zou Dao Loh
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Synaptosomal Membranes ◽  
Rat Serum ◽  
Principal Fatty Acid ◽  
Myelin Subfractions ◽  
Fatty Acid Release ◽  
Synaptosomal Plasma Membrane ◽  
Acid Release

To study lipid breakdown in brain membranes following hemorrhage, synaptosome and myelin fractions isolated from rat brain were incubated with rat serum. After 3 h in vitro at 37 °C, 0.43 and 0.26 μmol of fatty acid were released in incubations containing synaptosomes (1.37 μmol phospholipid) or myelin (1.23 μmol phospholipid), respectively, in the presence of 0.25 mL serum. Less than 0.05 μmol of fatty acid was liberated in incubations containing only serum, synaptosomes, or myelin. For synaptosomes and serum, docosahexaenoate was the principal fatty acid released (28 mol% of total) after 3 h of incubation. This fatty acid and arachidonate made up 43 mol% of the liberated fatty acid. The presence of free docosahexaenoate was of interest, as this fatty acid is particularly enriched in phosphatidylserine and phosphatidylethanolamine, phospholipids found in the cytoplasmic half of the synaptosomal plasma membrane and in interior synaptosomal membranes. In incubations of serum and myelin, oleate was the major free fatty acid produced in 30 min to 3 h of incubation (29–35 mol% of total). After 3 h, docosahexaenoate contributed 20 mol% to the total. The release of fatty acids from the membranes may be mediated by serum phospholipase(s) or possibly by activated endogenous lipolytic activities.Key words: fatty acid, serum, synaptosome, myelin, phospholipase A2.

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

Effect of light intensity on the ultrastructure of the filamentous cyanobacterium, Anabaena variabilis

1988 ◽  
Vol 46 ◽  
pp. 300-301
Author(s):  
C. S. Bricker ◽  
S. R. Barnum ◽  
B. Huang ◽  
J. G. Jaworskl
Keyword(s):  
Fatty Acid ◽  
Light Intensity ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Anabaena Variabilis ◽  
Chloroplast Envelope ◽  
Major Constituent ◽  
Filamentous Cyanobacterium ◽  
Photosynthetic Membrane ◽  
Effect Of Light

Cyanobacteria are Gram negative prokaryotes that are capable of oxygenic photosynthesis. Although there are many similarities between eukaryotes and cyanobacteria in electron transfer and phosphorylation during photosynthesis, there are two features of the photosynthetic apparatus in cyanobacteria which distinguishes them from plants. Cyanobacteria contain phycobiliproteins organized in phycobilisomes on the surface of photosynthetic membrane. Another difference is in the organization of the photosynthetic membranes. Instead of stacked thylakolds within a chloroplast envelope membrane, as seen In eukaryotes, IntracytopIasmlc membranes generally are arranged in three to six concentric layers. Environmental factors such as temperature, nutrition and light fluency can significantly affect the physiology and morphology of cells. The effect of light Intensity shifts on the ultrastructure of Internal membrane in Anabaena variabilis grown under controlled environmental conditions was examined. Since a major constituent of cyanobacterial thylakolds are lipids, the fatty acid content also was measured and correlated with uItrastructural changes. The regulation of fatty acid synthesis in cyanobacteria ultimately can be studied if the fatty acid content can be manipulated.

The effects of low-ratio n-6/n-3 PUFA on biomarkers of inflammation: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Yali Wei ◽  
Yan Meng ◽  
Na Li ◽  
Qian Wang ◽  
Liyong Chen
Keyword(s):  
Systematic Review ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acid ◽  
Meta Analysis ◽  
Chain Polyunsaturated Fatty Acid ◽  
Inflammation Markers ◽  
Pufa Supplementation ◽  
Long Chain

The purpose of the systematic review and meta-analysis was to determine if low-ratio n-6/n-3 long-chain polyunsaturated fatty acid (PUFA) supplementation affects serum inflammation markers based on current studies.

Temperature-dependent translational regulation of the ER omega-3 fatty acid desaturase gene in wheat root tips

2000 ◽  
Vol 24 (6) ◽  
pp. 805-813 ◽  
Author(s):  
Gorou Horiguchi ◽  
Takuichi Fuse ◽  
Naoto Kawakami ◽  
Hiroaki Kodama ◽  
Koh Iba
Keyword(s):  
Fatty Acid ◽  
Translational Regulation ◽  
Fatty Acid Desaturase ◽  
Wheat Root ◽  
Omega 3 ◽  
Root Tips ◽  
Temperature Dependent ◽  
Desaturase Gene ◽  
Omega 3 Fatty Acid ◽  
Fatty Acid Desaturase Gene
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