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Journal of Medical Bacteriology، جلد ۵، شماره ۵-۶، صفحات ۱-۱۲
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عنوان انگلیسی Antimicrobial and Anti-Swarming Effects of Bacteriocins and Biosurfactants from Probiotic Bacterial Strains against Proteus spp.
چکیده انگلیسی مقاله Background : Proteus spp. belongs to the family of Enterobacteriaceae . These bacteria are Gram-negative and motile microorganisms and known as the third most common causes of urinary tract infections. The aim of the current study was to investigate the effects of some secondary metabolites from probiotic strains of Lactobacillus spp. on swarming and growth of Proteus mirabilis and P. vulgaris . Methods : After determination of optimal conditions for the growth and production of antimicrobials, bacteriocins and biosurfactants were partially purified from Lactobacillus culture supernatants. Then, effects of the purified compounds on growth and swarming migration of Proteus spp. were examined in the presence of various concentrations of semi-purified compounds. Results : Results showed that the partially purified bacteriocins inhibited Proteus spp. swarming distance and had a significant reduction on the bacterial growth curves. Biosurfactants in a solvent form did not have any considerable effects on factors produced by Proteus spp. Conclusion : According to the results, the secondary metabolites, especially bacteriocins or bacteriocin-like substances derived from Lactobacillus strains, can inhibit or reduce growth and swarming migration of Proteus spp. which are considered as the bacteria major virulence factors.
کلیدواژه‌های انگلیسی مقاله Bacteriocin, Biosurfactant, Proteus, Swarming.
نویسندگان مقاله لیلا گودرزی | laila goudarzi
department of microbiology, faculty of sciences, alzahra university, tehran, iran. food microbiology research center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

روحا کسری کرمانشاهی | rouha kasra kermanshahi
department of microbiology, faculty of sciences, alzahra university, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

زهرا موسوی نژاد | zahra mousavi nezhad
department of microbiology, faculty of sciences, alzahra university, tehran, iran.

سازمان اصلی تایید شده: دانشگاه الزهرا (Alzahra university)

محمد مهدی سلطان دلال | mohamad mehdi soltan dallal
food microbiology research center, tehran university of medical sciences, tehran, iran. division of food microbiology, department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه الزهرا (Alzahra university)

نشانی اینترنتی http://jmb.tums.ac.ir/index.php/jmb/article/view/268
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/313/article-313-321584.pdf
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زبان مقاله منتشر شده en
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