Sphingomyelin in the Parasitic Nematode, Ascaris suum.

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  • SUGITA Mutsumi
    Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University
  • KURIMOTO Ayako
    Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University
  • DULANEY John T.
    Department of Medicine, Division of Nephrology, The University of Tennessee
  • SUZUKI Minoru
    Department of Membrane Biochemistry, The Tokyo Metropolitan Institute of Medical Science
  • SUZUKI Akemi
    Department of Membrane Biochemistry, The Tokyo Metropolitan Institute of Medical Science
  • OHTA Satoru
    Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University

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  • 寄生性線虫，Ａｓｃａｒｉｓ　ｓｕｕｍにおけるスフィンゴミエリン
  • キセイセイ センチュウ Ascaris suum ニ オケル スフィンゴミエリ

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Abstract

The presence of sphingomyelin as phospholipid in lower animals is quite rare but characteristic of higher animals. This paper describes isolation and structural characterization of two sphingomyelins, Sph.-1 and Sph.-2 from the parasitic nematode, Ascaris suum. The chemical structures were completely characterized by fatty acid and sphingoid analyses, hydrogen fluoride degradation, acid hydrolysis, enzymatic hydrolysis, infrared analysis and fast atom bombardment mass spectrometry. The ceramide moieties of the sphingomyelins consisted primarily of C22 : 0 and C24 : 0 fatty acids and branched dihydroxy- (C17 : 0 and C19 : 0) and trihydroxy- (C17 : 0) sphingoids for Sph.-1, and 2-hydroxylated (C22 : 0 and C24 : 0) fatty acids and branched dihydroxy- (C17 : 1) and trihydroxy- (C17 : 0) sphingoids for Sph.-2.

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