Anaerobic induction of adherence to laminin in Lactobacillus gasseri strains by contact with solid surface

Current Microbiology
Masanori HorieT Toba

Abstract

The effect of growth conditions on adhesion was studied in six species belonging to Lactobacillus acidophilus homology groups. Namely, 17 strains including 6 fresh isolates of L. gasseri from human feces were assessed for their adherence to immobilized fibronectin, laminin, and type IV collagen. These extracellular matrix proteins were used as a model of damaged intestinal mucosa. When the bacteria were grown on MRS agar under anaerobic conditions, all eight L. gasseri strains and one L. johnsonii strain showed strong adhesiveness to laminin, but not when grown in static MRS broth. A similar pattern was observed in four L. gasseri strains in terms of adherence to fibronectin. No L. gasseri or L. johnsonii strains exhibited adhesion to type IV collagen under either growth condition. Adhesion of L. acidophilus, L. crispatus, L. amylovorus, and L. gallinarum was not affected by the growth conditions. Although protease treatment of L. gasseri cells abolished the adhesion, periodate oxidation of the cells increased it except in one strain. The adherence of L. gasseri cells was diminished by periodate and alpha-mannosidase treatments of immobilized laminin. The above results suggest that mannose-specific proteinaceous adhesion can be...Continue Reading

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May 5, 2012·Gut Microbes·Luciana Rodrigues da CunhaT R Klaenhammer
Dec 12, 2017·The Journal of General and Applied Microbiology·Masanori HorieYasukazu Yoshida
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