Effets comparés d'un régime enrichi en yoghourt vivant ou thermisé sur le système immunitaire de la souris

Conge, Gilles-Alice; Gouache, P.; Desormeau-Bedot, J. P.; Loisillier, F.; Lemonnier, Daniel

doi:10.1051/rnd:19800603

Cited by 30 publications

(4 citation statements)

References 5 publications

(6 reference statements)

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“…Many researchers have suggested that certain probiotic effects can also be obtained with non-viable probiotics (Ouwehand and Salminen, 1998). Evidences also suggested that non-viable probiotics are less effective which may be attributed to their reduced binding ability than viable probiotics (Conge et al, 1980; De Simone et al, 1987; Kato et al, 1994; Kaila et al, 1995; Perdigon et al, 1995). In this study, a significant reduction in the adhesion and pathogen inhibition abilities of the probiotic L. reuteri strains was observed in heat inactivated forms compared to their viable forms.…”

Section: Discussionmentioning

confidence: 99%

Antagonistic Activity of Lactobacillus reuteri Strains on the Adhesion Characteristics of Selected Pathogens

et al. 2017

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Adhesion ability of probiotics is the key factor that decides their colonization in the gastrointestinal tract and potential to inhibit pathogens. Therefore, adhesion ability can be considered as a key determinant for probiotic efficacy. Presents study documents the antagonistic activity of viable/untreated, Lithium chloride (LiCl) treated or heat-killed forms of eight probiotic Lactobacillus reuteri strains on the adhesion characteristics of selected pathogens. All strains investigated were able to adhere to Caco-2 cells. L. reuteri strains tested were able to inhibit and displace (P < 0.05) the adhesion of Escherichia coli ATCC25922, Salmonella typhi NCDC113, Listeria monocytogenes ATCC53135, and Enterococcus faecalis NCDC115. The probiotic strain L. reuteri LR6 showed the strongest adhesion and pathogen inhibition ability among the eight L. reuteri strains tested. In addition, the abilities to inhibit and to displace adhered pathogens depended on both the probiotic and the pathogen strains tested suggesting the involvement of various mechanisms. The adhesion and antagonistic potential of the probiotic strains were significantly decreased upon exposure to 5 M LiCl, showing that surface molecules, proteinaceous in nature, are involved. The heat-killed forms of the probiotic L. reuteri strains also inhibited the attachment of selected pathogens to Caco-2 cells. In conclusion, in vitro assays showed that L. reuteri strains, as viable or heat-killed forms, are adherent to Caco-2 cells and are highly antagonistic to pathogens tested in which surface associated proteins play an important role.

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Section: Discussionmentioning

confidence: 99%

Antagonistic Activity of Lactobacillus reuteri Strains on the Adhesion Characteristics of Selected Pathogens

et al. 2017

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“…This assumption has been evaluated in a review of available literature and it was concluded that, although viable probiotics have more documented health effects than non‐viable probiotics, the latter are not without effect (Ouwehand and Salminen 1998). However, orally administered non‐viable probiotics are less effective in modulating the immune system than viable probiotics (Conge et al . 1980; de Simone et al .…”

Section: Discussionmentioning

confidence: 99%

Adhesion of inactivated probiotic strains to intestinal mucus

Ouwehand

Tölkkö

Kulmala

et al. 2000

Letters in Applied Microbiology

115

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It has been suggested that probiotics should be viable in order to elicit beneficial health effects. Inactivation of probiotics has been suggested to interfere with the binding to the mucosa and thereby with the immune modulating activity of probiotics. The effect of different inactivation methods on the mucus adhesion of nine probiotic strains was studied. Inactivation by heat or γ‐irradiation generally decreased the adhesive abilities. However, heat treatment increased the adhesion of Propionibacterium freudenreichii and γ‐irradiation enhanced the adhesion of Lactobacillus casei Shirota. Inactivation by u.v. was not observed to modulate the adhesion of the tested strains and it was concluded to be the most appropriate method for studying non‐viable probiotics and preparing control products.

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“…Different studies in animals have pointed out that yoghurt intake may enhance natural and acquired immunity (Conge et al, 1980;De Simone et al, 1986). However, despite conventional yoghurt being the most typically consumed in the world, relatively few studies have looked into the effects of yoghurt consumption on the immune system in humans.…”

Section: Introductionmentioning

confidence: 99%

The effect of fermented milk on interferon production in malnourished children and in anorexia nervosa patients undergoing nutritional care

et al. 2002

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For several years cytokine production has been associated with infections but it was not suspected that some types of food could also induce cytokines, even in a state of non-infection. Lactic bacteria can induce interferon (IFN) production in human healthy subjects, thus, a better protection against infections would be expected. Therefore, we planned to evaluate the effect of two diets including yoghurt or milk on IFN-g production during nutritional recovery in two different situations of malnutrition: (1) children with diarrhoea; and (2) patients with anorexia nervosa (AN). Both the diet including yoghurt of that including milk seemed to increase IFN-g production at the end of nutritional recovery in the malnourished children with diarrhoea. The significance of interferon production and the lymphocyte subset increase should be explored to know if a better resistance against pathogens is related to them. Regulation of intestinal absorption and moderate stimulation of interferon production make the yoghurt-based diet a good choice in the nutritional care of children. In the same way, an increase in the IFN-g production was observed in AN patients consuming yoghurt. This increase of IFN-g production could be considered a biological marker to detect the effect of probiotics on the immune response, especially in the improvement of a deficient nutritional status.

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Effets comparés d'un régime enrichi en yoghourt vivant ou thermisé sur le système immunitaire de la souris

Cited by 30 publications

References 5 publications

Antagonistic Activity of Lactobacillus reuteri Strains on the Adhesion Characteristics of Selected Pathogens

Antagonistic Activity of Lactobacillus reuteri Strains on the Adhesion Characteristics of Selected Pathogens

Adhesion of inactivated probiotic strains to intestinal mucus

The effect of fermented milk on interferon production in malnourished children and in anorexia nervosa patients undergoing nutritional care

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