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Clarke BJ, Harold FV, Hildebrand RP, Murray PJ. TRACE VOLATILE CONSTITUENTS OF BEER. II. HOP WAX. JOURNAL OF THE INSTITUTE OF BREWING 2013. [DOI: 10.1002/j.2050-0416.1961.tb01836.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Affiliation(s)
- W M O'leary
- Department of Microbiology and Immunology, Cornell University Medical College, New York, New York
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Williams EE, Anderson MJ, Miller TJ, Smith SD. The lipid composition of hypodermal membranes from the blue crab (Callinectes sapidus) changes during the molt cycle and alters hypodermal calcium permeability. Comp Biochem Physiol B Biochem Mol Biol 2004; 137:235-45. [PMID: 14990220 DOI: 10.1016/j.cbpc.2003.11.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2003] [Revised: 11/18/2003] [Accepted: 11/18/2003] [Indexed: 11/15/2022]
Abstract
Crustaceans are covered by a cuticle that does not grow. In order for an individual to grow, the cuticle must periodically be shed (ecdysis). Replacement of the old cuticle with a new one depends on processes that require precise timing and control, yet the nature and location of these controls remain unclear. A candidate site for them is within the hypodermal microvilli. These cellular structures extend through pore canals deep into the acellular cuticular matrix. Changes in the lipid composition of hypodermal microvilli could modulate water and ion fluxes and enzyme activities during critical stages of the molt cycle; however, the lipid composition of these structures has not been assessed during the molt cycle. Data presented here show that phospholipids isolated from hypodermal microvilli of Callinectes sapidus initially have elevated levels of n-6 fatty acids that decline steadily beginning just after ecdysis. Experiments with liposomes reveal that n-6 fatty acids decrease the calcium permeability of membranes, suggesting that the initially elevated levels in the cuticle may function to reduce calcium flux from the cuticle into the hypodermis. In addition, the ratio of cholesterol to phospholipid and the proportion of oleic acid in membrane phospholipids are maximal at 6 h post-ecdysis. It is known that changes in cholesterol and oleic acid content alter membrane permeability to water. It is, therefore possible that water flux through hypodermal membranes is also modulated in the early post-molt cuticle. Changes in microvillar lipid composition might serve importantly to control biomineralization in the post-ecdysal cuticle.
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Affiliation(s)
- E Eugene Williams
- Department of Biological Sciences, Salisbury University, Salisbury, MD, 21801 USA.
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Albino L, Polo MP, de Bravo MG, de Alaniz MJ. Uptake and metabolic conversion of saturated and unsaturated fatty acids in Hep2 human larynx tumor cells. Prostaglandins Leukot Essent Fatty Acids 2001; 65:295-300. [PMID: 11993723 DOI: 10.1054/plef.2001.0328] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Research on fatty acid metabolism in cultured human larynx tumor cells Hep2 was carried out. The cells were incubated with either a saturated (palmitic) or a polyunsaturated (linoleic, alpha-linolenic and eicosatrienoic (n-6)) radioactive fatty acid (0.66 pM, 24 h). The best incorporation capacity was observed in the linoleic acid followed by alpha-linolenic, palmitic and eicosatrienoic acids. All fatty acids tested were anabolized to higher derivatives within their own family. Palmitic acid was primarily monodesaturated rather than elongated, proving to have a very active A9 desaturase activity. With respect to polyunsaturated acid metabolism, the conversion of alpha-linolenic acid to higher homologs, although better than linoleic acid, occurred far less efficiently than that observed in other non-highly undifferentiated human tumor cells. This impairment in higher polyunsaturated fatty acid biosynthesis, reflected in the low levels of arachidonic acid in the fatty acid composition, would not reside in the A5 desaturation step since Hep2 cells can readily convert eicosatrienoic acid into arachidonic acid. Considering the potential regulatory role of specific polyunsaturated fatty acids in the cell proliferative control, the knowledge of the metabolism of fatty acids in this human tumor cell would be important for designing future experiments in order to clarify the mechanism involved in balance, proliferation and cell death.
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Affiliation(s)
- L Albino
- Instituto de Investigaciones Bioquimicas de La Plata (INIBIOLP), CONICET-UNLP, Facultad de Ciencias Medicas, Argentina
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MATCHES JR, WALKER HW, AYRES JC. PHOSPHOLIPIDS IN VEGETATIVE CELLS AND SPORES OF BACILLUS POLYMYXA. J Bacteriol 1996; 87:16-23. [PMID: 14102851 PMCID: PMC276955 DOI: 10.1128/jb.87.1.16-23.1964] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Matches, Jack R. (Iowa State University of Science and Technology, Ames), Homer W. Walker, and John C. Ayres. Phospholipids in vegetative cells and spores of Bacillus polymyxa. J. Bacteriol. 87:16-23. 1964.-The same types of phospholipids were recovered from both vegetative cells and spores of Bacillus polymyxa 1A39. Nitrogen-containing phospholipids were identified as phosphatidyl ethanolamine, lysophosphatidyl ethanolamine, lysophosphatidyl serine, and lysolecithin. Acidic phosphatides containing no nitrogen were identified as phosphatidic acid, phosphatidyl glycerol, and a fraction appearing to be bis (phosphatidic) acid. The major phosphatide fraction in both cells and spores was phosphatidyl ethanolamine. Smaller amounts of phosphatidyl glycerol and bis (phosphatidic) acid were present; the other acidic phospholipid components were present only in trace amounts. Heat resistance of the spore as compared to the vegetative cell could not be attributed to a specific phospholipid, since no difference in the type of phospholipids present was observed.
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Polyunsaturated fatty acid biosynthesis in testis from rats fed a hypercholesterolemic diet. J Nutr Biochem 1994. [DOI: 10.1016/0955-2863(94)90004-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ingalls ST, Kriaris MS, Xu Y, DeWulf DW, Tserng KY, Hoppel CL. Method for isolation of non-esterified fatty acids and several other classes of plasma lipids by column chromatography on silica gel. JOURNAL OF CHROMATOGRAPHY 1993; 619:9-19. [PMID: 8245168 DOI: 10.1016/0378-4347(93)80441-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A method is described for isolation from human plasma of non-esterified fatty acids, cholesteryl esters, triglycerides, cholesterol and diglycerides, monoglycerides, and some phospholipids by extraction and silica gel column chromatography. All of these lipid classes except diglycerides and cholesterol were separated cleanly in seven elution steps. Diglycerides and cholesterol were isolated together. Recovery of model compounds which represent the most significant classes of plasma lipids during the column chromatographic step was nearly complete. The overall recovery of added heptadecanoic acid from plasma specimens was 81% after both sample isolation steps. The overall recovery of added synthetic pentadecanoic acid and heptadecanoic acid ester lipid homologues from plasma was 80-91% after both sample preparation steps. About 6 h are required for extraction and isolation in duplicate of these lipid classes from twenty plasma specimens. Alternatively, non-esterified fatty acids can be isolated from twenty plasma specimens in duplicate within 4 h by a variation of the full procedure.
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Affiliation(s)
- S T Ingalls
- Medical Research 151 (W), Department of Veterans Affairs Medical Center, Cleveland, OH 44106
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Jeckel WH, Aizpún de Moreno JE, Moreno ]VJ. Biochemical composition, lipid classes and fatty acids in the ovary of the shrimp Pleoticus muelleri bate. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0305-0491(89)90277-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Evans MB, Haywood PA, Johnson D, Martin-Smith M, Munro G, Wahlich JC. Chromatographic methods for determining the identity, strength and purity of ranitidine hydrochloride both in the drug substance and its dosage forms--an exercise in method selection, development, definition and validation. J Pharm Biomed Anal 1989; 7:1-22. [PMID: 2488600 DOI: 10.1016/0731-7085(89)80062-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The selection, development, definition and validation of selective stability-indicating procedures for high-performance liquid chromatographic and thin-layer chromatographic analyses of ranitidine hydrochloride are described. The procedures used in conjunction can be applied to the quality assurance and stability assessments of both the drug substance and its dosage forms and serve to establish the identity, strength and purity of this drug used in the treatment of peptic ulcer and related conditions.
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Affiliation(s)
- M B Evans
- Division of Chemical Sciences, Hatfield Polytechnic, Hertfordshire, UK
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Lipid cues for seed-carrying by ants inHepatica americana. J Chem Ecol 1988; 14:2185-96. [DOI: 10.1007/bf01014024] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/1987] [Accepted: 10/14/1987] [Indexed: 10/25/2022]
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15
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Biochemical changes during the reproductive cycle of the small patagonian octopus, Octopus tehuelchus, D'Orb. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0305-0491(88)90080-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Albro PW, Corbett JT, Schroeder JL, Harvan D. Comparison of the effects of carbon tetrachloride and of 2,3,7,8-tetrachlorodibenzo-p-dioxin on the disposition of linoleic acid in rat liver in vitro. Chem Biol Interact 1988; 66:267-85. [PMID: 3135123 DOI: 10.1016/0009-2797(88)90076-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Both 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) and carbon tetrachloride (CCl4) have conspicuous effects on lipid metabolism in rat liver. Although it is generally accepted that CCl4 administration leads to hepatic lipid peroxidation in vivo, conflicting reports from different laboratories make it unclear whether or not lipid peroxidation is involved in the mechanism of toxicity of TCDD. The present study involved pretreating F344 rats with CCl4 or TCDD, then at predetermined times thereafter, giving [U-14C]linoleic acid. A variety of compound classes were monitored in extracts of liver taken 30 min after the label was given. A previously unreported effect of CCl4 was a conspicuous increase in turnover of 1,2-diglycerides. That CCl4 did cause lipid peroxidation was evident from the presence of allylic hydroxyacids not seen in vehicle-treated controls, greatly increased radioactivity in protein-bound material, and decreased levels of arachidonate without decreased synthesis from linolate. Where effects of TCDD pretreatment could be seen, they were much less than the corresponding effects of CCl4. No allylic hydroxyacids were detected in livers of TCDD-treated rats. The concentration of arachidonate was not reduced, and elongation of linolate was not stimulated, indicating that TCDD did not cause extensive-but-repaired peroxidation. It is concluded that while TCDD may slightly increase hepatic lipid peroxidation in rats in vivo, the extent of such stimulation appears to be too slight to account for the toxicity of TCDD.
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Affiliation(s)
- P W Albro
- Laboratory of Molecular Biophysics, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709
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Occurrence of a 22∶2 nonmethylene interrupted dienoic fatty acid and its seasonal distribution among lipids and tissues of the fresh water bivalveDiplodon delodontus from an isolated environment. Lipids 1984; 19:649-55. [DOI: 10.1007/bf02534524] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/1984] [Indexed: 10/23/2022]
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Vier B, Voigt B. Untersuchungen zur Anreicherung von Ergosterol und Ubichinonen aus Lipid-Kohlenwasserstoff-Fraktionen. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/abio.370040414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Pollero RJ. Lipid and fatty acid characterization and metabolism in the sea anemonePhymactis clematis (Dana). Lipids 1983. [DOI: 10.1007/bf02534684] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pollero RJ, Brenner RR, Gros EG. Seasonal changes in lipid and fatty acid composition of the freshwater mollusk,Diplodom patagonicus. Lipids 1981. [DOI: 10.1007/bf02535683] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pollero RJ, Ré ME, Brenner RR. Seasonal changes of the lipids of the mollusc Chlamys tehuelcha. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0300-9629(79)90658-3] [Citation(s) in RCA: 68] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Albro PW, Corbett JT, Harris M, Lawson LD. Effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin on lipid profiles in tissue of the Fischer rat. Chem Biol Interact 1978; 23:315-30. [PMID: 719812 DOI: 10.1016/0009-2797(78)90093-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Female Fischer 344 rats were given single oral doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), 10, 50 or 100 microgram/kg, and sacrificed 1, 3, 10, 14 or 21 days later. The fatty livers caused by a sub-lethal dose of TCDD involved a temporary increase in triglyceride and free fatty acid levels, with a persistent decrease in levels of sterol esters. In contrast, the fatty livers resulting from a lethal dose of TCDD involved a large increase in cholesterol esters and free fatty acids, with little change in triglyceride levels. These changes appeared to result in part from damage sustained by lysosomes. TCDD also altered the lipoprotein composition of the serum, the fatty acid composition of various lipid classes in liver and serum, and the ultrastructure of the liver (formation of myeloid bodies). A rapid, dose-dependent effect of TCDD, was the elevation of levels of organic-soluble fluorescent pigment in the heart. This pigment was found to match a previously characterized fraction of lipofuscins in fluorescence spectrum and chromatographic properties. The relatioship of these observations to a possible mechanism of toxicity for TCDD involving radical-induced lipid peroxidation is discussed.
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Walli RA. Interrelation of aerobic glycolysis and lipogenesis in isolated perfused liver of well-fed rats. BIOCHIMICA ET BIOPHYSICA ACTA 1978; 539:62-80. [PMID: 623794 DOI: 10.1016/0304-4165(78)90122-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The rates of glycolysis and lipogenesis in isolated perfused liver of well-fed rats were studied. When liver was allowed to synthesize [14C]glycogen prior to perfusion, no more than 9% of the degraded [14C]glycogen was recovered in lactate and 6% in lipid. Addition of glucose, fructose and sorbitol enhanced concomitantly the formation of lactate and pyruvate and the rate of release of triglyceride and free fatty acid. Glucose was less efficient than fructose or sorbitol. The incorporation of 14C from these 14C-labelled substrates into lactate, pyruvate and lipids confirmed their role as carbon sources. Incorporation of 14C into the glycerol moiety of neutral lipid exceeded that found in the fatty acids, suggesting that these substrates contributed largely to the esterification of fatty acids. The total rate of de novo fatty acid synthesis was correlated with the formation of lactate and pyruvate. It is concluded that increased rates of aerobic glycolysis are related to increased rates of lipogenesis.
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Tjaden UR, Krol JH, Van Hoeven RP, Oomen-Meulemans EP, Emmelot P. High-pressure liquid chromatography of glycosphingolipids (with special reference to gangliosides). J Chromatogr A 1977; 136:233-43. [PMID: 885965 DOI: 10.1016/s0021-9673(00)86275-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The analysis of mixtures of gangliosides from adult human or bovine brain, supplemented with Tay-Sachs ganglioside, and haematoside from dog erythrocytes by high-pressure liquid chromatography using a moving-wire detector system is described. The complete separation of six gangliosides within 40 min has been achieved, using silica as the stationary phase and acidified chloroform-methanol-water mixtures as the eluent on a 25-cm column. Neutral glycosphingolipids, viz., the major components from normal human erythrocytes, can be completely separated on the same column, using non-aqueous and non-acidic eluents. It is shown that the methods described are useful for both analytical and (micro)-preparative purposes.
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De Moreno JE, Moreno VJ, Brenner RR. Lipid metabolism of the yellow clam, Mesodesma mactroides: 2-polyunsaturated fatty acid metabolism. Lipids 1976; 11:561-6. [PMID: 948252 DOI: 10.1007/bf02532902] [Citation(s) in RCA: 81] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The fate of labeled linoleic, alpha-linolenic, and higher homologs of alpha-linolenic acid administered to the yellow clam, Mesodesma mactroides, was investigated. It was found that the clam incorporated the acids dissolved in sea water and converted 18:2 (n-6) into 20:2 (n-6) and 18:3 (n-3) into 18:4 (n-3) and 20:3 (n-3). The addition of casein hydrolysate to the sea water increased the desaturation capacity of the calm and allowed the conversion of 18:2 (n-6) into 18:3 (n-6) to be demonstrated. An enhanced desaturation of 18:3 (n-3) into 18:4 (n-3) was also demonstrated. After 12 hr admininistration of the acid, no radioactivity was found in arachidonic, 20:5 (n-3), or 22:6 (n-3). Feeding the clams a culture of Phaeodactylun tricornutum previously incubated with 1-14C-alph-linolenic acid demonstrated that all the homologs of the alpha-linolenic series were found in the clam without any important changes. Six hour administration of labled linolenic acid resulted in the incorporation of the acid into diglycerides and phospholipids.
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De Moreno JE, Moreno VJ, Brenner RR. Lipid metabolism of the yellow clam, Mesodesma mactroides: I. Composition of the lipids. Lipids 1976; 11:334-40. [PMID: 1263776 DOI: 10.1007/bf02544063] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The lipid composition of the yellow clam, Mesodesma mactroides, that lives in the northern beaches of the Buenos Aires province of Argentina was studied. The main nonpolar lipids are triglycerides and alkoxyglycerides. Phosphatidyl choline, phosphatidyl ethanolamine, and phosphatidyl serine are the main phospholipids. The predominant fatty acids are 16:0, 16:1omega7, 18:0, 18:1omega9, 20:5omega3, and 22:6omega3. They are mainly provided by the clam's food and stored in the hepatopancreas. The content of polyunsaturated acids increases in summer together with an increase in nonpolar lipids and is correlative with an increase in phytoplankton in the sea water. Sexual maturity modifies the lipid composition of gametes.
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Beckwith R, Schenkel RH, Silverman PH. Qualitative analysis of phospholipids isolated from nonviable Plasmodium antigen. Exp Parasitol 1975; 37:164-72. [PMID: 1091493 DOI: 10.1016/0014-4894(75)90067-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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29
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Méthode des variations continues des paramètres actifs et application à l'étude des causes, mécanismes et facteurs de séparation de solutés par chromatographie sur couche mince. I. Etude en première approximation dans le cas des nitranilines et toluidines et du gel de silice hydraté 2ème partie: Etude de divers systèmes chromatographiques. Chromatographia 1974. [DOI: 10.1007/bf02269201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Watson DJ, Bartosik D. Thin-layer partition chromatography of steroids using volatile stationary phases. J Chromatogr A 1971; 54:91-5. [PMID: 4250912 DOI: 10.1016/s0021-9673(01)80249-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Slawson V, Stein RA. Comparative autoxidative susceptibility of fatty esters with O-6 methylene-interrupted double bonds. Lipids 1970; 5:713-7. [PMID: 4318124 DOI: 10.1007/bf02531440] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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33
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A simple gas chromatographic method for the determination of diethyl ether in ether-petroleum ether mixture. Anal Chim Acta 1970. [DOI: 10.1016/s0003-2670(01)80024-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Cavina G, Moretti G, Mollica A, Moretta L, Siniscalchi P. Analytical and preparative column chromatography of neutral lipids with continuous monitoring of the eluate by a flame ionization detector. J Chromatogr A 1969; 44:493-508. [PMID: 4311407 DOI: 10.1016/s0021-9673(01)92573-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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George-Nascimento C, Beytia E, Aedo AR, Cori O. Transformation of mevalonic acid into isoprenoid compounds by enzymes from Pinus radiata. Activation of the overall reaction by phospholipids. Arch Biochem Biophys 1969; 132:470-6. [PMID: 4307824 DOI: 10.1016/0003-9861(69)90391-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Sweeley CC. [45] Chromatography on columns of silicic acid. Methods Enzymol 1969. [DOI: 10.1016/s0076-6879(69)14047-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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SEPARATION AND ESTIMATION OF PHOSPHOLIPIDS. CHROMATOGRAPHY 1969. [DOI: 10.1016/b978-0-433-30503-3.50026-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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41
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Spitz H. Impurities in silica gel as a critical factor in the qualitative evaluation of an organic compound. J Chromatogr A 1969. [DOI: 10.1016/s0021-9673(01)80638-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Renkonen O. Chromatographic separation of plasmalogenic, alkyl-acyl, and diacyl forms of ethanolamine glycerophosphatides. J Lipid Res 1968. [DOI: 10.1016/s0022-2275(20)43140-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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43
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Gray GM. Chromatography of lipids. II. The quantitative isolation of the minor (acidic) phospholipids and of phosphatidylethanolamine from the lipid extracts of mammalian tissues. BIOCHIMICA ET BIOPHYSICA ACTA 1967; 144:519-24. [PMID: 4294900 DOI: 10.1016/0005-2760(67)90040-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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44
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Evans CD, McConnell DG, Hoffmann RL, Peters H. Chromatography of polar triglycerides on silicic acid columns. J AM OIL CHEM SOC 1967; 44:281-3. [PMID: 4292332 DOI: 10.1007/bf02635614] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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45
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Bestimmung von Kephalin, Lecithin, Lysolecithin und Sphingomyelin im Serum oder in anderen biologischen Flüssigkeiten. Clin Chem Lab Med 1967. [DOI: 10.1515/cclm.1967.5.4.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Micev I, Popov A, Nedelcheva L. [Use of N-bromosuccinimide for spot staining in thin layer chromatography of lipids]. J Chromatogr A 1966; 24:432. [PMID: 4165498 DOI: 10.1016/s0021-9673(01)98184-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Abstract
1. Chromatography of rat-liver lipids on a column of silicic acid or a mixture of silicic acid and Hyflo Super-Cel, with chloroform-methanol mixtures, gave monophosphoinositide-containing fractions which were invariably contaminated by the presence of nitrogen-containing phospholipids. The behaviour of the inositide was extremely sensitive to column loading and the results with different batches of silicic acid were not reproducible. 2. However, when chromatography on an alumina column was used, the solvent system chloroform-methanol-water (23:23:4, by vol.) completely eluted the neutral lipids, choline-containing phospholipids and phosphatidylethanolamine. An increase of the water content of the solvent to 14% (by vol.) then led to the elution of the monophosphoinositide component, now free from nitrogen-containing phospholipids, but still contaminated by the presence of a phospholipid, which from its properties was taken to be polyglycerophosphatide. 3. Most of the polyglycerophosphatide could be removed from a rat-liver lipid extract by silicic acid chromatography with chloroform-methanol (19:1, v/v). The other phospholipids were then eluted and applied to an alumina column, whereby a monophosphoinositide fraction of much greater purity was obtained. 4. Further purification of the monophosphoinositide was achieved by chromatography on a mixture of silicic acid and cellulose powder. The final product was virtually pure by thin-layer chromatography and gave the expected analysis for monophosphoinositide.
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Vorbeck ML, Marinetti G. Separation of glycosyl diglycerides from phosphatides using silicic acid column chromatography. J Lipid Res 1965. [DOI: 10.1016/s0022-2275(20)39630-9] [Citation(s) in RCA: 123] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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