지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.3
- 수록면
- 54 - 63 (10page)
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초록· 키워드
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Urinary tract infections (UTI) are one of the most frequent infectious diseases. Uropathogenic Escherichia coli (UPEC) are among major pathogens causing UTI. A variety of virulence genes are mainly responsible for the severity of these emerging infection. This study investigate the influences of virulence properties of UPEC isolates with reference to multi-locus sequence typing (MLST). The aim of this study was targeted that investigation of the bacterial pathogenicity associated with UTI in children. A total of 58 UPEC isolates were collected from urine samples from patients with clinical diagnosis of uncomplicated UTI. The MLST of UPEC strains were assessed by methods based on polymerase chain reaction. Motility was evaluated using soft-agar plates. Biofilm formation was analyzed in microtiter dish biofilm formation assay. Cell death assay was analyzed by Annexin V/Phosphatidylserine staining and DNA fragmentation assay. According the result, the predominant sequence type (ST) was ST95 (24.1%) and ST73 (17.2%). There were some difference in virulence gene and antibiotics resistance between ST95 and ST73. The number of 11 (18.9%) isolates were strongly adherent. Based on the detected biofilm formation, these strongly adherent are almost ST73. The ST95 was higher than ST73 in population, but ST95 was lower than ST73 in motility and cell death induction. This study indicated that the UPEC molecular strains are related to some virulence traits. Furthermore, the virulence factors carried by ST73 strains contribute to their abilities to colonize the host and cause disease.
목차
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCE
참고문헌 (27)
참고문헌 신청
Asadi S, Kargar M, Solhjoo K, Najafi A, Ghorbani-Dalini S. The Association of Virulence Determinants of Uropathogenic Escherichia coli With Antibiotic Resistance. Jundishapur J Microbiol 2014;7:e9936.
Tabasi M, Asadi Karam MR, Habibi M, Yekaninejad MS, Bouzari S. Phenotypic Assays to Determine Virulence Factors of Uropathogenic Escherichia coli (UPEC) Isolates and their Correlation with Antibiotic Resistance Pattern. Osong Public Health Res Perspect 2015;6:261-8.
Blango MG, Mulvey MA. Persistence of uropathogenic Escherichia coli in the face of multiple antibiotics. Antimicrob Agents Chemother 2010;54:1855-63.
Lee S, Yu JK, Park K, Oh EJ, Kim SY, Park YJ. Phylogenetic groups and virulence factors in pathogenic and commensal strains of Escherichia coli and their association with blaCTX-M. Ann Clin Lab Sci 2010;40:361-7.
Bashir S, Sarwar Y, Ali A, Mohsin M, Saeed MA, Tariq A, et al. Multiple drug resistance patterns in various phylogenetic groups of uropathogenic E. coli isolated from Faisalabad region of Pakistan. Braz J Microbiol 2011;42: 1278-83.
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UCI(KEPA) : I410-ECN-0101-2017-475-002382370