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De Vuyst L, Vincent P, Makras E, et al. Peptide Extracts from Cultures of Certain Lactobacilli Inhibit Helicobacter pylori. Probiotics Antimicrob Proteins. 2010;2(1):26-36doi: 10.1007/s12602-009-9029-4.
De Vuyst, L., Vincent, P., Makras, E., Leroy, F., & Pot, B. (2010). Peptide Extracts from Cultures of Certain Lactobacilli Inhibit Helicobacter pylori. Probiotics and antimicrobial proteins, 2(1), 26-36. https://doi.org/10.1007/s12602-009-9029-4
De Vuyst, Luc, et al. "Peptide Extracts from Cultures of Certain Lactobacilli Inhibit Helicobacter pylori." Probiotics and antimicrobial proteins vol. 2,1 (2010): 26-36. doi: https://doi.org/10.1007/s12602-009-9029-4
De Vuyst L, Vincent P, Makras E, Leroy F, Pot B. Peptide Extracts from Cultures of Certain Lactobacilli Inhibit Helicobacter pylori. Probiotics Antimicrob Proteins. 2010 Mar;2(1):26-36. doi: 10.1007/s12602-009-9029-4. PMID: 26780898.
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Probiotics Antimicrob Proteins. 2010 Mar;2(1):26-36. doi: 10.1007/s12602-009-9029-4.

Peptide Extracts from Cultures of Certain Lactobacilli Inhibit Helicobacter pylori.

Probiotics and antimicrobial proteins

Luc De Vuyst, Pascal Vincent, Eleftherios Makras, Frédéric Leroy, Bruno Pot

Affiliations

  1. Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium. [email protected].
  2. Equipe Mixte Inserm E9919-Université JE 2225-Institut de Biologie de Lille, rue du Pr Calmette 1, B.P. 245, 59021, Lille, France.
  3. Service de Bactériologie, Hôpital Calmette, 1 Bd du Pr J. Leclercq, 59037, Lille, France.
  4. Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium.
  5. Bactériologie des Ecosystèmes, Institut Pasteur de Lille, 59037, Lille, France.

PMID: 26780898 DOI: 10.1007/s12602-009-9029-4

Abstract

Helicobacter pylori inhibition by probiotic lactobacilli has been observed in vitro and in vivo. Carefully selected probiotic Lactobacillus strains could therefore play an important role in the treatment of H. pylori infection and eradication. However, the underlying mechanism for this inhibition is not clear. The aim of this study was to examine if peptide extracts, containing bacteriocins or other antibacterial peptides, from six Lactobacillus cultures (Lactobacillus acidophilus La1, Lactobacillus amylovorus DCE 471, Lactobacillus casei YIT 9029, Lactobacillus gasseri K7, Lactobacillus johnsonii La1, and Lactobacillus rhamnosus GG) contribute to the inhibition of H. pylori. Peptide extracts from cultures of Lact. amylovorus DCE 471 and Lact. johnsonii La1 were most active, reducing the viability of H. pylori ATCC 43504 with more than 2 log units within 4 h of incubation (P < 0.001). The four other extracts were less or not active. When six clinical isolates of H. pylori were tested for their susceptibility towards five inhibitory peptide extracts, similar observations were made. Again, the peptide extracts from Lact. amylovorus DCE 471 and Lact. johnsonii La1 were the most inhibitory, while the three other extracts resulted in a much lower inhibition of H. pylori. Protease-treated extracts were inactive towards H. pylori, confirming the proteinaceous nature of the inhibitory substance.

Keywords: Antibacterial peptide; Bacteriocin; Helicobacter pylori; Lactobacillus; Probiotic; Therapeutic

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