Inhibition of Helicobacter pylori infection by bovine milk glycoconjugates in a BAlb/cA mouse model

Journal of Medical Microbiology
X WangT Wadström

Abstract

The attachment of Helicobacter pylori to the human gastric mucosa is a complex process involving several specific structures recognised by the cell surface receptors. Sialylated multivalent high mol. wt glycoproteins have been shown to inhibit H. pylori sialic acid-specific haemagglutination. This study explored whether sialylated glycoconjugates from bovine milk could inhibit an experimental H. pylori infection in a mouse model. BALB/cA mice (6-8 weeks old) were inoculated with a mouse-passaged H. pylori strain 317p. Four weeks after infection the mice were given lactoferrin (iron-free LF or 20% iron-saturated LF) or bovine milk fat globule membrane fractions (MFGM or defatted MFGM) orally (400 mg/kg body weight) once daily for 10 days and then killed to examine for bacterial colonisation and gastritis. Mice treated with iron-free LF, 20% iron-saturated LF, MFGM or defatted MFGM showed 30%, 10%, 20% or 20% healing rates, respectively, when compared with the H. pylori-infected control. Gastric colonisation by H. pylori was remarkably decreased in all mice treated with bovine milk glycoconjugates and the inflammation score was also significantly lower in treated mice than in infected control animals. The fact that there was no s...Continue Reading

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