Viable and nonviable Weissella confusa strain PL9001 inhibited the binding of Helicobacter pylori to human gastric-cell line MKN-45 cells by more than 90%. Spent culture supernatant of PL9001 rapidly decreased the viability of H. pylori, rupturing cell walls. The results suggest that PL9001 is a probiotic that can reduce the infectivity and persistence of H. pylori.
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Nam et al. (2002) studied this question.
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