Original Articles

Evaluation of Antimicrobial Activity of Probiotic Lactobacillus Strains against Growth and Urease Activity of Proteus spp.


Background:    Nowadays, the use of probiotic bacteria for the prevention and treatment of urinary tract infections is growing. Lactobacillus, as probiotic bacterial genus, is well known for its benefits for the human health.Methods:      The effects of partially purified antimicrobial compounds (bacteriocins and biosurfactants) of Lactobacillus strains was assessed and their capacity to in vitro inhibit growth and urease production of various strains of Proteus spp, was studied. Inhibition of the urease production of Proteus spp. at sub-MIC levels was screened using spectrophotometry method.  Results:   Results revealed that semi-purified bacteriocins of L. acidophilus and L. plantarum showed a greater inhibitory activity on the bacterial urease, compared to biosurfactants of L. rhamnosus, L. casei and L. fermentum (P < 0.05).Conclusion:    It can be concluded that bacteriocins may affect Proteus pathogenesis by inhibition of the bacterial urease activity and therefore eliminate the stone formation by these bacteria.

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IssueVol 6 No 3-4 (2017) QRcode
SectionOriginal Articles
Antimicrobial activity Lactobacillus spp Probiotic bacteria Proteus spp Ureas

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How to Cite
Goudarzi L, Kermanshahi R, Moosavi-Nejad Z, Soltan Dalla MM. Evaluation of Antimicrobial Activity of Probiotic Lactobacillus Strains against Growth and Urease Activity of Proteus spp. J Med Bacteriol. 2017;6(3-4):31-43.