In vitro adhesion property and competition against enteropathogens of Lactobacillus strains isolated from Thai infants

• Main Authors: Kwannan Nantavisai, Srisombat Puttikamonkul, Kruawan Chotelersak, Malai Taweechotipatr
• Format: Article
• Language: English
• Published: Prince of Songkla University 2018-02-01
• Series: Songklanakarin Journal of Science and Technology (SJST)
• Subjects: probiotics; Lactobacillus; Caco-2 cell; adhesion; competition; Salmonella Typhi; Shigella dysenteriae
• Online Access: http://rdo.psu.ac.th/sjstweb/journal/40-1/40-1-8.pdf

Adhesion to the intestinal epithelium is considered to be one of the selection criteria for probiotics strain. In this study, the adhesion of four different Lactobacillus strains with potential probiotics properties, i.e. L. paracasei MSMC39-1, L. casei MSMC39-3, L. salivarius MSMC105-3 and L. plantarum MSMC171-1, was studied using Caco-2 cell line as an in vitro model for intestinal epithelium. Among four different Lactobacillus strains, L. salivarius MSMC105-3 was the most adhesive strain showing about 3.5 percent of adhesion index. Thus, this strain was selected to examine for its ability to inhibit the adhesion of pathogenic Salmonella Typhi DMST5784 and Shigella dysenteriae DMST15111 to Caco-2 cells. The results showed that L. salivarius MSMC105-3 whole cell and its cell-free culture supernatant could inhibit the adhesion of pathogens. The results from this study indicated that both L. salivarius MSMC105-3 itself and its substances secreted into culture supernatant had the ability to reduce the adhesion of enteropathogens to Caco-2 cells.