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Inhibition of Staphylococcus aureus adherence to Caco-2 cells by lactobacilli and cell surface properties that influence attachment.

Abstract：

:Staphylococcus aureus is an opportunistic pathogen that can colonize human and animal intestinal tracts, causing certain gastrointestinal diseases. The adherence of enteric pathogens to host intestinal epithelial cells is important for their pathogenesis. In the present study, Lactobacillus salivarius and Lactobacillus plantarum were investigated in vitro to examine their ability to competitively exclude S. aureus. Various factors involved in attachment, including bacterial status and cell concentration, growth phase, competition patterns, and surface-layer protein extracts, were also investigated. Live lactobacilli in the mid-log growth phase exhibited maximum inhibitory activity when lactobacilli were pre- or co-incubated with S. aureus. However, the inhibitory activity was significantly reduced when the lactobacilli were inactivated by heating or treated with LiCl. Furthermore, both lactobacilli possessed certain cell surface properties, such as hydrophobicity, autoaggregation, and coaggregation ability. L. salivarius and L. plantarum strongly inhibited S. aureus adherence to Caco-2 cells and their inhibition activity was significantly influenced by several factors that affect adhesion inhibition.

journal_name

Anaerobe

journal_title

Anaerobe

authors

Ren D,Li C,Qin Y,Yin R,Li X,Tian M,Du S,Guo H,Liu C,Zhu N,Sun D,Li Y,Jin N

doi

10.1016/j.anaerobe.2012.08.001

subject

Has Abstract

pub_date

2012-10-01 00:00:00

pages

508-15

issue

5

eissn

1075-9964

issn

1095-8274

pii

S1075-9964(12)00109-6

journal_volume

18

pub_type

杂志文章

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