Synergistic Effect of B-Type Lotus Seedpod Oligomeric Procyanidin and Probiotics against Adhesion of Enterotoxigenic Escherichia coli In Vitro.

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    • Abstract:
      Enterotoxigenic Escherichia coli (ETEC) adhesion to gut epithelial cells is a prerequisite for diarrhea. Here, we studied the synergistic effect and potential mechanism of B-type lotus seedpod oligomeric procyanidin (LSPC) combined with probiotics against adhesion of ETEC. The results indicated that LSPC exhibited an effective anti-ETEC adhesion effect. LSPC showed signally synergistic effects with probiotics, e.g., Streptococcus thermophilus (ST) and Lactobacillus rhamnosus (LGG) in response to ETEC adhesion, with the combination of LSPC and LGG being the most efficacious. This may be attributed to the restoration of transmembrane resistance of cells, the increased expression of anti-inflammatory factors (IL-10, 1.89-fold), and the reduction of cellular inflammatory factor levels (TNF-α and IL-8), regulated by LGG-LSPC, resulting in a better enhancement of cellular immune defense and barrier function. In addition, the results of gas chromatography showed that LSPC, as a prebiotic, could significantly increase the total amount of short-chain fatty acids (especially, butyric acid) produced by probiotics (e.g., LGG), thus better maintaining intestinal health against ETEC infection. In conclusion, the synergistic effect of LSPC and probiotics (represented by LGG) against ETEC adhesion in epithelial cells may be achieved through the enhancement of cellular immune defense, cellular barrier function, and maintenance of homeostasis in the gut. [ABSTRACT FROM AUTHOR]
    • Abstract:
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