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. 2019 Nov 20;9(12):752.
doi: 10.3390/biom9120752.

Hydrogen Sulfide Effects on the Survival of Lactobacilli with Emphasis on the Development of Inflammatory Bowel Diseases

Ivan Kushkevych  1 , Věra Kotrsová  1 , Dani Dordević  2 , Leona Buňková  3 , Monika Vítězová  1 , Amedeo Amedei  4
Affiliations

Hydrogen Sulfide Effects on the Survival of Lactobacilli with Emphasis on the Development of Inflammatory Bowel Diseases

Ivan Kushkevych et al. Biomolecules. .

Abstract

The gut microbiota is a complex component of humans that depends on diet, host genome, and lifestyle. The background: The study purpose is to find relations between nutrition, intestinal lactic acid bacteria (LAB) from various environments (human, animal intestine, and yogurt) and sulfate-reducing microbial communities in the large intestine; to compare kinetic growth parameters of LAB; and to determine their sensitivity to different concentration of hydrogen sulfide produced by intestinal sulfate-reducing bacteria.

Methods: Microbiological (isolation and identification), biochemical (electrophoresis), molecular biology methods (DNA isolation and PCR analysis), and statistical processing (average and standard error calculations) of the results were used.

The results: The toxicity of hydrogen sulfide produced by sulfate-reducing bacteria, the survival of lactic acid bacteria, and minimal inhibitory concentrations (MIC) were determined. The measured hydrogen sulfide sensitivity values were the same for L. paracasei and L. reuteri (MIC > 1.1 mM). In addition, L. plantarum and L.fermentum showed also a similar sensitivity (MIC > 0.45 mM) but significantly (p < 0.05) lower than L.reuteri and L. paracasei (1.1 > 0.45 mM). L. paracasei and L. reuteri are more sensitive to hydrogen sulfide than L. fermentum and L.&nbsp;plantarum. L. pentosus was sensitive to the extremely low concentration of H2S (MIC > 0.15 mM).

Conclusions: The Lactobacillus species were significantly sensitive to hydrogen sulfide, which is a final metabolite of intestinal sulfate-reducing bacteria. The results are definitely helpful for a better understanding of complicated interaction among intestinal microbiota and nutrition.

Keywords: hydrogen sulfide; inflammatory bowel disease; intestinal microbiome; lactic acid bacteria; sulfate-reducing bacteria; toxicity; ulcerative colitis.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Pure cultures of LAB cells (light microscope, magnification 1000×).
Figure 2
Figure 2
Growth curves of lactic acid bacteria (M ± SE, n = 5): data gained by the Bioscreen C spectrophotometer (A) and designed by CFU values (B).
Figure 3
Figure 3
Principal component analysis of growth parameters (A) and cluster analysis (B).
Figure 4
Figure 4
The survival of Lactobacillus species and the toxicity of hydrogen sulfide.
See this image and copyright information in PMC

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