Sex‐and age‐related differences in ceramide dihexosides of primary human brain tumors

Yates, Allan J.; Franklin, Teresa K.; Scheithauer, B. W.; Burger, Peter C.; Pearl, Dennis K.

doi:10.1007/s11745-999-330-7

Cited by 7 publications

References 24 publications

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Structures, practical sources (gymnosperm seeds), gas-liquid chromatographic data (equivalent chain lengths), and mass spectrometric characteristics of all-cis Δ5-olefinic acids

Wolff

Christie

2002

Eur. J. Lipid Sci. Technol.

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Structures, practical sources (gymnosperm seeds), gas-liquid chromatographic data (equivalent chain lengths), and mass spectrometric characteristics of all-cis ∆ ∆5-olefinic acidsIn view of the increasing interest of lipid researchers in the biological effects of all-cis ∆5-unsaturated polymethylene-interrupted fatty acids (∆5-UPIFA) from vegetable origin, this paper is concerned with their occurrence in practical sources (gymnosperm seeds), structures, and identification by gas-liquid chromatography (GLC) and mass spectrometry (MS). The use of equivalent chain lengths (ECL) determined by calculations based on available standards, in close agreement with data determined with easily available commercial gymnosperm seeds specific for each ∆5-UPIFA, allows identification of all ∆5-UPIFA. These tentative identifications are supported by GLC-MS of the appropriate (4,4-dimethyloxazoline and picolinyl ester) derivatives. ECL are particularly useful to identify ∆5-UPIFA in tissue lipids from animals experimentally fed oils containing these acids, with no interference with polyunsaturated fatty acids of endogenous origin.

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