Colonization Rate and Risk Factors of Vancomycin-Resistant Enterococci among Patients Received Hematopoietic Stem Cell Transplantation in Shiraz, Southern Iran

被引:3
|
作者
Kaveh, M. [1 ]
Bazargani, A. [1 ]
Ramzi, M. [2 ]
Ebrahim-Saraie, H. Sedigh [1 ]
Heidari, H. [1 ]
机构
[1] Shiraz Univ Med Sci, Sch Med, Dept Bacteriol & Virol, Zand St,Imam Hossein Sq, Shiraz, Iran
[2] Shiraz Univ Med Sci, Hematol Res Ctr, Dept Hematol Oncol & Stem Cell Transplantat, Shiraz, Iran
来源
INTERNATIONAL JOURNAL OF ORGAN TRANSPLANTATION MEDICINE | 2016年 / 7卷 / 04期
关键词
Enterncoccus; Vancomycin; Risk factors; Colonization; Stem cell transplant;
D O I
暂无
中图分类号
R3 [基础医学]; R4 [临床医学];
学科分类号
1001 ; 1002 ; 100602 ;
摘要
Background: Infections caused by antimicrobial-resistant bacteria are associated with increased mortality and health care costs. Enterococci have been recognized as a clinically important pathogen in hospitalized patients. Vancomycin-resistant enterococci (VRE) infections cause significant morbidity and mortality among patients undergoing transplantation. Objective: To identify epidemiology of VRE colonization and related risk factors among patients with hematological malignancies after hematopoietic stem cell transplantation (HSCT). Methods: This cross-sectional study was performed on 42 patients who underwent bone-marrow transplantation between July 2013 and March 2014. A stool sample was taken from each patient 3-5 days after transplantation and cultured on appropriate media. Suspected colonies of enterococci were detected to species level by their culture characteristics, biochemical reactions and molecular features. VRE were confirmed via phenotypic and genotypic methods. Results: VRE were detected in 14 (33%) of studied samples. 10 (71 A)) of the detected VRE isolates were identified as high level vancomycin-resistant E. faecium with minimum inhibitory concentration (MIC) of ?2.56 irg/mL of vancomycin; 3 isolates were E. galinarum and 1 was E. casseliflavus with an MIC of 8-16 pg/mL. VanA was dominant phenotype and all VRE isolates with high-level of vancomycin resistance had vanA gene. VRE isolation was mostly observed in patients with acute lymphoblastic leukemia (ALL) than other diseases. Moreover, antibiotic prophylaxis and hospitalization were independent risk factors for acquisition of VRE after transplantation. Conclusion: We found high level of vancomycin-resistance in E. faecium isolates obtained from HSCT patients. The vancomycin-resistant isolates of E. faecium had vanA and/or simultaneously vanB genes.
引用
收藏
页码:197 / 205
页数:9
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