alexa Liver gangliosides of various animals ranging from fish to mammalian species.


Journal of Glycobiology

Author(s): Saito M, Kitamura H, Sugiyama K

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Abstract Liver gangliosides of different animal species were analyzed. Bony fish liver contained a major ganglioside that migrated faster than GM3 on thin-layer chromatography (TLC). This ganglioside was identified to be GM4 (NeuAc) by methods including product analysis after sialidase treatment and negative-ion electrospray ionization (ESI)-mass spectrometry (MS). The presence of GM4 (NeuGc) in fish liver was also demonstrated. The main ganglioside band of bovine liver consisted of two different molecular species, i.e. GD1a (NeuAc/NeuAc) and GD1a (NeuAc/NeuGc). Major gangliosides of liver tissue exhibited a distinct phylogenetic profile; GM4 was expressed mainly in lower animals such as bony fish and frog liver, whereas mammalian liver showed ganglioside patterns with smaller proportions of monosialo ganglioside species. While c-series gangliosides were consistently expressed in lower animals, they were found only in mammalian liver of particular species. No apparent trend was observed between the concentration of liver gangliosides and the phylogenetic stage of animals. The present study demonstrates the species-specific expression of liver gangliosides.
This article was published in Comp Biochem Physiol B Biochem Mol Biol and referenced in Journal of Glycobiology

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