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mljgoums 2020, 14(1): 15-19 |
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Ebrahimnezhad H, Barzegar L, Esmaeili D. Antibacterial Effects of Compound Bifilact on E.coli and Campylobacter jejuni. mljgoums 2020; 14 (1) :15-19
URL: http://mlj.goums.ac.ir/article-1-1206-en.html
URL: http://mlj.goums.ac.ir/article-1-1206-en.html
1- Student of pharmacy, Department of Pharmaceutics, Baqiyatallah University of Medical Sciences,Tehran,Iran
2- Department of Microbiology and Applied Microbiology Research Center, Systems Biology and Poisonings Institute, BaqiyatallahUniversity of Medical Sciences, Tehran, Iran
3- Applied VirologyResearch Center, BaqiyatallahUniversity of Medical Sciences, Tehran, Iran, and Department of Microbiology and Applied Microbiology Research Center, Systems Biology and Poisonings Institute, BaqiyatallahUniversity ofMedical Sciences, Tehran, Iran ,esm114@gmail.com
2- Department of Microbiology and Applied Microbiology Research Center, Systems Biology and Poisonings Institute, BaqiyatallahUniversity of Medical Sciences, Tehran, Iran
3- Applied VirologyResearch Center, BaqiyatallahUniversity of Medical Sciences, Tehran, Iran, and Department of Microbiology and Applied Microbiology Research Center, Systems Biology and Poisonings Institute, BaqiyatallahUniversity ofMedical Sciences, Tehran, Iran ,
Abstract: (5169 Views)
ABSTRACT
Background and Objectives: Probiotics are live microorganisms that function through various mechanisms and affect the alteration of the commensal microbiota against pathogens. Nowadays, given the problems associated with antibiotics use, probiotic strains offer a novel and appropriate alternative for the treatment of diseases such as diarrhea. The aim of this study was to investigate the antibacterial synergism of Lactobacillus spp., Bifidobacterium spp. and Escherichia coli strain Nissle 1917 (ECN) on the clinical sample of diarrheagenic E.coli and Campylobacter jejuni.
Methods: A paper disk-diffusion technique was used to evaluate the antibacterial activity. Sterile 6 mm paper disks were saturated with probiotic suspensions made by settling probiotic medications into distilled water. Three kinds of disk were prepared. One disk was prepared for Lactobacillus spp. and Bifidobacterium spp., another for ECN, and the third was made by combined probiotics. Clinical samples of diarrheagenic E.coli and Campylobacter jejuni were cultivated on Muller Hinton agars, and disks were placed on the inoculated Muller Hinton agars. All plates were incubated under microaerophilic and appropriate conditions.
Results: The zone of inhibition (ZOI) of the bacterial growth was measured. All pathogenic microorganisms showed sensitivity to the probiotic disks. The combined disks had better effects against pathogens compared with single disks.
Conclusion: A considerable synergistic effect was observed in the results of combined probiotics; therefore, combined strains can be more efficient against intestinal pathogens in comparison with single probiotics.
Keywords: Probiotic, Lactobacillus, Bifidobacterium, Escherichia coli Nissle, Diarrhea, Campylobacter jejun.i.
Background and Objectives: Probiotics are live microorganisms that function through various mechanisms and affect the alteration of the commensal microbiota against pathogens. Nowadays, given the problems associated with antibiotics use, probiotic strains offer a novel and appropriate alternative for the treatment of diseases such as diarrhea. The aim of this study was to investigate the antibacterial synergism of Lactobacillus spp., Bifidobacterium spp. and Escherichia coli strain Nissle 1917 (ECN) on the clinical sample of diarrheagenic E.coli and Campylobacter jejuni.
Methods: A paper disk-diffusion technique was used to evaluate the antibacterial activity. Sterile 6 mm paper disks were saturated with probiotic suspensions made by settling probiotic medications into distilled water. Three kinds of disk were prepared. One disk was prepared for Lactobacillus spp. and Bifidobacterium spp., another for ECN, and the third was made by combined probiotics. Clinical samples of diarrheagenic E.coli and Campylobacter jejuni were cultivated on Muller Hinton agars, and disks were placed on the inoculated Muller Hinton agars. All plates were incubated under microaerophilic and appropriate conditions.
Results: The zone of inhibition (ZOI) of the bacterial growth was measured. All pathogenic microorganisms showed sensitivity to the probiotic disks. The combined disks had better effects against pathogens compared with single disks.
Conclusion: A considerable synergistic effect was observed in the results of combined probiotics; therefore, combined strains can be more efficient against intestinal pathogens in comparison with single probiotics.
Keywords: Probiotic, Lactobacillus, Bifidobacterium, Escherichia coli Nissle, Diarrhea, Campylobacter jejun.i.
Keywords: Probiotic, Lactobacillus, Bifidobacterium, Escherichia coli Nissle 1917, diarrhea, Campylobacter jejuni
Research Article: Original Paper |
Subject:
Microbiology
Received: 2019/03/22 | Accepted: 2019/07/16 | Published: 2019/12/30 | ePublished: 2019/12/30
Received: 2019/03/22 | Accepted: 2019/07/16 | Published: 2019/12/30 | ePublished: 2019/12/30
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