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  • Title: Variation of the ganglioside compositions of human milk, cow's milk and infant formulas.
    Author: Pan XL, Izumi T.
    Journal: Early Hum Dev; 2000 Jan; 57(1):25-31. PubMed ID: 10690709.
    Abstract:
    The ganglioside compositions of human milk, cow's milk and infant formulas were compared. The results showed that there was a drastic change in the ganglioside composition from the colostrum to later human milk, and that both the patterns and contents of gangliosides in human milk, cow's milk and infant formulas differed markedly. In human milk, the total lipid-bound sialic acid level was two times higher than those in cow's milk and infant formulas. The major ganglioside in the later human milk, GM3 (27.7%), was only a minor component in the colostrum, cow's milk and infant formulas (3.3, 2.8 and 0.4-2.6%, respectively). GD3 represented 49.0, 61.0 and 72.4-86.6%, respectively, of the colostrum, cow's milk and infant formulas, compared to 31.8% of the later human milk gangliosides. Another four gangliosides, which were assumed to be c-series gangliosides, were detected in the colostrum and the later human milk. They represented 33-38% of total lipid-bound sialic acid, and were tentatively designated as GX1, GX2, GX3 and GX4, respectively. However, only GX1 and GX2 were observed in cow's milk and infant formulas. The variation of the gangliosides in human and cow's milk, and infant formulas might have some biological significance regarding neonatal brain development, allergies, infant growth and non-immunoglobulin prophylactic activities against some bacterial toxins.
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