Comparison of probiotic Lactobacillus strains isolated from dairy and Iranian traditional food products with those from human source on intestinal microbiota using BALB/C mice model
This study compares the probiotic Lactobacillus strains isolated from dairy and Iranian traditional food products with those from human sources on intestinal microbiota using BALB/C mice model. First, Lactiplantibacillus plantarum (M11), Limosilactobacillus fermentum (19SH), Lactobacillus acidophilu...
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Veröffentlicht in: | Brazilian journal of microbiology 2022-09, Vol.53 (3), p.1577-1591 |
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Zusammenfassung: | This study compares the probiotic
Lactobacillus
strains isolated from dairy and Iranian traditional food products with those from human sources on intestinal microbiota using BALB/C mice model. First,
Lactiplantibacillus plantarum
(M11),
Limosilactobacillus fermentum
(19SH),
Lactobacillus acidophilus
(AC2), and
Lactobacillus gasseri
(52b) strains, isolated from either Iranian traditionally fermented products or human (healthy woman vaginal secretions), identified with molecular methods and selected based on the surface hydrophobicity, auto- and co-aggregation, were investigated for their probiotic properties and compared with their standard probiotic strains in vitro. The native strains and their mixtures (MIX) were then orally fed to five groups of female inbred BALB/C mice over the course of 38 days by gavage at 0.5 and 4 McFarland, respectively, equal to 1.5 × 10
8
and 1 × 10
9
cfu/ml. Feeding paused for 6 days to test the bacteria’s adhesion in vivo. According to the findings, the probiotic
Lactobacillus
strain isolated from human source (52b) exhibited the best in vitro and in vivo adhesion ability. Probiotic
Lactobacillus
strains isolated from Iranian traditional food products (19SH and AC2) had the most co-aggregation with
Listeria monocytogenes
(ATTC 7644),
Salmonella enterica
subsp
. enterica
(ATCC 13,076), and
Escherichia coli
(NCTC 12,900 O157:H7) in vitro. These strains produced the most profound decreasing effect on the mice intestinal microbiota and pathogens in vivo. The difference in the strains and their probiotic potential is related to the sources from which they are isolated as well as their cell walls. The results suggest that (19SH and 52b strains) are the best candidates to investigate the cell wall and its effect on the host immune system. |
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ISSN: | 1517-8382 1678-4405 |
DOI: | 10.1007/s42770-022-00790-6 |