Adhesion and Aggregation Ability of Probiotic Strain Lactobacillus acidophilus M92 (CROSBI ID 490270)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Kos, Blaženka ; Šušković, J. ; Vuković, Snježana ; Šimpraga, Miljenko ; Frece, Jadranka ; Matošić, Srećko
engleski
Adhesion and Aggregation Ability of Probiotic Strain Lactobacillus acidophilus M92
The ability of probiotic bacteria to adhere to the intestinal epithelium play an important role in colonization of the gastrointestinal tract, preventing their elimination by peristalsis and providing a competitive advantage in this ecosystem. To identify bacterial traits related to adhesion the probiotic strain L. acidophilus M92 was examined for autoaggregation ability and cell surface hydrophobicity. L. acidophilus M92 exhibits a strong autoaggregating phenotype and also coaggregation with some pathogen microorganisms that may form a barrier that prevents their colonization. The examined probiotic strain manifests a high degree of hydrophobicity determined by microbial adhesion to hydrocarbons. Aggregation and hydrophobicity were abolished upon exposure of the cells to pronase and pepsin, which suggest the possible role of cell surface proteins in the aggregation phenotype. SDS-PAGE of cell surface proteins revealed the presence of potential surface (S-) layer proteins, approximated at 45 kDa, in L. acidophilus M92. The relationship between autoaggregation and adhesion ability to intestinal tissue was investigated by observing the adhesivity of L. acidophilus M92 to porcine ileal epithelial cells. Removal of the S-layer proteins by extraction with 5 M LiCl reduced autoaggregation and in vitro adhesion of this strain.
adhesion; aggregation; hydrophobicity; L. acidophilus; probiotic properties; S-layer proteins
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Podaci o prilogu
J48-x.
2002.
objavljeno
Podaci o matičnoj publikaciji
Lactic Acid Bacteria: Genetics, Metabolism and Applications
Siezen, R. J. ; Kok, J. ; Abee, T. ; Schaafsma, G.
Dordrecht: Kluwer Academic Publishers
Podaci o skupu
Seventh Symposium on Lactic Acid Bacteria: Genetics, Metabolism and Applications
poster
01.09.2002-05.09.2002
Egmond aan Zee, Nizozemska