Composition ofO-alkyl andO-alk-1-enyl moieties in the glycerolipids of the human adrenal |
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| Authors: | Hsiang Ju Lin M S F Lie Ken Jie Clara Lai Hing Lee Daniel Hong Seng Lee |
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| Affiliation: | (1) Departments of Pathology and Chemistry, University of Hong Kong, Hong Kong |
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| Abstract: | A comparison of human adult and fetal adrenals with respect to their levels of glyceryl ether lipids and other lipid components
is reported. Fetal glands contained significantly lower levels of alk-1-enyl phosphoglycerides and of cholesterol. Neutral
glyceryl ether diesters, and ethanolamine and choline phosphoglycerides were isolated from adult adrenal tissue. The composition
of theO-alkyl glycerol groups in these lipid fractions was obtained by means of gas chromatography of the trimethylsilyl ethers and
diacetyl derivatives;O-alk-1-enyl glycerols were analyzed as their diacetates. About one-half of the alkyl and alk-1-enyl glycerol moieties present
in glyceryl ether diesters contained hydrocarbon side chains with 20, 22, or 24 carbon atoms. Long hydrocarbon chains (C19–24) were also found in theO-alkyl glycerol moieties present in the total lipids of fetal adrenals. |
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