Human Milk Oligosaccharides: Defense Against Pathogens

Human Milk Oligosaccharides Important for Infant Defense

Oligosaccharides of Human Milk

Two new octasaccharides were isolated from human milk of a nonsecretor Lewis a+bindividual. Structural studies by sequential enzymic degradation and by quantitative methylation analysis revealed that their structures were as follows: Gal/31 + 3 (Fuccul + 4) GlcNAcPl + 3Gal/H -+ 4 (Fucal -+ 3) GlcNAcPl + 3Gal/31+ 4Glc, Gal/?1 + 4 (Fuccul -+ 3) GlcNAcj31 + 3Gal/31 -+ 4 (Fuccul -+ 3) GlcNAcj31 + 3...

Innate Defense against Fungal Pathogens.

Human fungal infections have been on the rise in recent years and proved increasingly difficult to treat as a result of the lack of diagnostics, effective antifungal therapies, and vaccines. Most pathogenic fungi do not cause disease unless there is a disturbance in immune homeostasis, which can be caused by modern medical interventions, disease-induced immunosuppression, and naturally occurrin...

Seaweed Polysaccharides and Derived Oligosaccharides Stimulate Defense Responses and Protection Against Pathogens in Plants

Plants interact with the environment by sensing "non-self" molecules called elicitors derived from pathogens or other sources. These molecules bind to specific receptors located in the plasma membrane and trigger defense responses leading to protection against pathogens. In particular, it has been shown that cell wall and storage polysaccharides from green, brown and red seaweeds (marine macroa...

5410 Oligosaccharides of Human Milk

Two new octasaccharides were isolated from human milk of a nonsecretor Lewis a+bindividual. Structural studies by sequential enzymic degradation and by quantitative methylation analysis revealed that their structures were as follows: Gal/31 + 3 (Fuccul + 4) GlcNAcPl + 3Gal/H -+ 4 (Fucal -+ 3) GlcNAcPl + 3Gal/31+ 4Glc, Gal/?1 + 4 (Fuccul -+ 3) GlcNAcj31 + 3Gal/31 -+ 4 (Fuccul -+ 3) GlcNAcj31 + 3...