Abstract:
:Uropathogenic Escherichia coli (UPEC) isolates contain large genomic segments, termed pathogenicity islands (PAIs), that contribute to their virulence. A total of 150 UPEC and 50 commensal E. coli isolates from outpatients were investigated for antimicrobial susceptibility and the presence of eight PAI markers. One hundred ninety (95 %) isolates were resistant to one or more antimicrobial agents. The most frequent resistance found against amoxicillin (68 %), amoxicillin/clavulanic acid (55 %), aztreonam (50 %), trimethoprim/sulfamethoxazole (46 %) and tetracycline (43.5 %). Antimicrobial resistance among UPEC isolates was higher than that of commensals. PAI markers were detected in substantial percentage of commensal (88 %) and UPEC isolates (98.6 %) (P > 0.05). The most prevalent PAI marker among UPEC and commensal isolates was PAI IV536 (98.7 % UPEC vs. 84 % commensal). We found a high number of PAI markers such as PAI ICFT073, PAI IICFT073, PAI I536, PAI II536, PAI III536 and PAI IIJ96 significantly associated with UPEC. PAI III536 (21.3 %) and PAI IIJ96 (8 %) were detected only in the uropathogenic isolates. Several different combinations of PAIs were found among UPEC isolates. Comparison of PAIs among UPEC and commensal isolates showed that many UPEC isolates (79.3 %) carried two or more PAI markers, while 6 % of commensals had two PAI markers (P < 0.05). The most frequent combinations of PAI markers in UPEC isolates were PAI IV536 + PAI IICFT073 (18 %) and PAI IV536 + PAI ICFT073 + PAI IICFT073 (18 %). These results indicate that PAI markers are widespread among commensal and UPEC isolates and these commensal isolates may be reservoirs for transmission of these markers.
journal_name
Folia Microbiol (Praha)journal_title
Folia microbiologicaauthors
Samei A,Haghi F,Zeighami Hdoi
10.1007/s12223-015-0433-8subject
Has Abstractpub_date
2016-05-01 00:00:00pages
261-8issue
3eissn
0015-5632issn
1874-9356pii
10.1007/s12223-015-0433-8journal_volume
61pub_type
杂志文章abstract::The antifungal effect of 2-alkylthio-6-amino- and 2-alkylthio-6-formamidobenzothiazoles (22 derivatives in all) on Aspergillus niger and various Candida yeasts was tested. No significant effect was observed with A. niger. With the pathogenic yeast species C. albicans and C. guilliermondii, the most efficient derivativ...
journal_title:Folia microbiologica
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doi:10.1007/BF02814461
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
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abstract::Superoxide dismutases, both cytosolic Cu, Zn-SOD encoded by SOD1 and mitochondrial Mn-SOD encoded by SOD2, serve Saccharomyces cerevisiae cells for defense against the superoxide radical but the phenotypes of sod1A and sod2delta mutant strains are different. Compared with the parent strain and the sod1delta mutant, th...
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journal_title:Folia microbiologica
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doi:10.1007/BF02903706
更新日期:1999-01-01 00:00:00
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journal_title:Folia microbiologica
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doi:10.1007/s12223-013-0260-8
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02817411
更新日期:2000-01-01 00:00:00
abstract::Bifidobacteria (246 strains in total) were isolated from rectal samples of infants and adult humans and animals, and from intestinal samples of calves. Twenty-five strains grew well on mucin: 20 from infants, two from adults, and three from goatlings. Poor or no growth on mucin was observed in 156 bifidobacterial stra...
journal_title:Folia microbiologica
pub_type: 杂志文章
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更新日期:2011-03-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-019-00685-4
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02876780
更新日期:1975-01-01 00:00:00
abstract::The effect of paraquat on the activities of antioxidant defense and detoxifying enzymes of the white-rot fungus Funalia trogii was determined. Paraquat increased the activities of glutathione reductase (GR), glutathione transferase (GT) and superoxide dismutase at 1 mmol/L, while at 0.1 mmol/L it did not affect the ac...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02818700
更新日期:2002-01-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02816248
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journal_title:Folia microbiologica
pub_type: 杂志文章,评审
doi:10.1007/BF02928083
更新日期:1988-01-01 00:00:00
abstract::A proteus strain inhibited mycelial growth of Fusarium oxysporum in vitro. Seed bacterization showed significant plant growth promotion and Fusarium-wilt suppression activity of Phaseolus mungo in a gnotobiotic system. The culture filtrate of this strain exhibited three prominent bands in UV-VIS spectra between 300 an...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02818723
更新日期:2000-01-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02814202
更新日期:1995-01-01 00:00:00
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journal_title:Folia microbiologica
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doi:10.1007/BF02876446
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doi:10.1007/BF02818557
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
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abstract::Crude lipids isolated from Bacillus firmus, but not from other bacilli, were previously found to induce significant resistance against Listeria monocytogenes infection in mice. In this study, formaldehyde- and heat-killed bacterins of eight Bacillus species and some cellular fractions of B. firmus were prepared and te...
journal_title:Folia microbiologica
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journal_title:Folia microbiologica
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02876597
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abstract::The ability of six bifidobacterial strains (3 of human origin and 3 isolates from fermented milk products) to utilize glucose, lactose, melezitose, sucrose, raffinose, and stachyose was determined. Dairy-related bifidobacterial strains were identified as Bifidobacterium animalis (2 strains) or as B. pseudolongum (1 st...
journal_title:Folia microbiologica
pub_type: 杂志文章
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