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Study of Methicillin-resistant Staphylococcus Aureus (MRSA) Isolated From Infected Patients in Brazil (MRSABrazil)

2011年5月23日更新者：University of Sao Paulo

Epidemiological Study of Methicillin-resistant Staphylococcus Aureus (MRSA) Isolated From Infected Patients During a Hospital Surveillance Period

This project has as general objective to determine if there is any Methicillin-resistant Staphylococcus aureus (MRSA) strain disseminating in the hospital of Belo Horizonte. If this is the case, the investigators will determine if this is an international known strain by typing it by PFGE and MLST.

The detection of mecA gene will be performed by PCR. Their susceptibility profile to several drugs will also be accessed and it will be possible to compare the response to those drugs commonly in use to that of Daptomycin, a new drug available in Brazil.

It will be screened for reduced susceptibility to vancomycin by Macromethod Etest (MET) in order to search for VISA or hetero-VISA. Also, due to the discussions at the literature about mutations in genes that are said to be responsible for reduced susceptibility to vancomycin, the investigators will sequence these genes in all PFGE type strain of this study looking for mutations already described to compare to the screening results.

研究概览

地位

未知

条件

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详细说明

Multidrug resistant and virulent MRSA strains have been disseminating worldwide and few alternatives of treatment for diseases caused by this pathogen are available. In this study, 36 isolates from colonization or different clinical specimens from infected patients of the Hospital Rizoleta Tolentino Neves will be analyzed. These results will provide important data for doctors and nurses, such as whether there is any strain dissemination or not in the hospital what could suggest an outbreak. It will be performed molecular typing by pulsed field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). The investigators will evaluate the efficiency of several antimicrobials and the frequency of h-VISA and VISA among the Brazilian MRSA. Besides, the investigators will verify the presence of mutation in genes that are involved in resistance mechanisms of VISA. According to the strains profile present in the hospital, if this is suggested that there is a dissemination of some strain, the health professionals can start a more rigid infection control measures in order to decrease the number of cases of nosocomial infection, decreasing the time of hospitalization of patients and, consequently the cost for the hospital.

研究类型

观察性的

注册 (预期的)

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习地点

巴西
- Sao Paulo
  - Sao Carlos、Sao Paulo、巴西、13560-590
    - Instituto de Física de Sao Carlos - Universidade de Sao Paulo

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

1个月及以上 (孩子、成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

取样方法

非概率样本

研究人群

MRSA from infection or from colonization of a patient who was already infected by MRSA during the time of the study

描述

Inclusion Criteria:

MRSA from infection sites
MRSA from colonization of the patients who already was infected by MRSA during the time of the study

Exclusion Criteria:

MRSA from colonization of a patient who has not infection caused by MRSA

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

University of Sao Paulo

调查人员

首席研究员：Ilana L B Camargo, PhD、University of Sao Paulo

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始

2011年7月1日

研究注册日期

首次提交

2011年5月20日

首先提交符合 QC 标准的

2011年5月23日

首次发布 (估计)

2011年5月24日

研究记录更新

最后更新发布 (估计)