Rapid and reliable identification of Gram-negative bacteria and Gram-positive cocci by deposition of bacteria harvested from blood cultures onto the MALDI-TOF plate.

Rapid and reliable identification of Gram-negative bacteria and Gram-positive cocci by deposition of bacteria harvested from blood cultures onto the MALDI-TOF plate.
复制标题

DOI:
10.1186/s12866-015-0459-8
复制
发表时间:
2015-06-18
期刊:
影响因子:
4.2
通讯作者:
Lupetti A
Lupetti A
中科院分区:
生物学3区
文献类型:
--
作者:
Barnini S;Ghelardi E;Brucculeri V;Morici P;Lupetti A

文献摘要

参考文献

被引文献

相似文献

使用基质辅助激光解吸/电离飞行时间 (MALDI-TOF) 方法快速识别血流感染的病原体可以提高经验性抗菌治疗的适宜性。在此,我们的目标是建立一种更容易、更简单的方法,进一步称为直接法,使用血清分离管从阳性血培养物中收获细菌,并将其放置到抛光钢靶板上,以便通过 MALDI-TOF 快速识别。将直接法的结果与 MALDI-TOF 对固体培养基上分离的细菌获得的结果进行比较。使用直接法或 MALDI-TOF 对分离细菌进行革兰氏阴性杆菌鉴定的一致性为 100%(96%,评分 > 2.0)。这两种方法对革兰氏阳性球菌的一致性为 90%(32% 得分 > 2.0)。革兰氏阳性球菌的 SepsiTyper 方法鉴定在 87% 的病例中与 MALDI-TOF 对分离细菌的结果一致(37% 的得分 > 2.0)。本文开发的直接方法可以从阳性血培养物中快速识别(30 分钟内)革兰氏阴性细菌和革兰氏阳性球菌,并可用于快速报告可靠和准确的结果,无需熟练人员或使用昂贵的试剂盒。
Rapid identification of the causative agent(s) of bloodstream infections using the matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) methodology can lead to increased empirical antimicrobial therapy appropriateness. Herein, we aimed at establishing an easier and simpler method, further referred to as the direct method, using bacteria harvested by serum separator tubes from positive blood cultures and placed onto the polished steel target plate for rapid identification by MALDI-TOF. The results by the direct method were compared with those obtained by MALDI-TOF on bacteria isolated on solid media. Identification of Gram-negative bacilli was 100 % concordant using the direct method or MALDI-TOF on isolated bacteria (96 % with score > 2.0). These two methods were 90 % concordant on Gram-positive cocci (32 % with score > 2.0). Identification by the SepsiTyper method of Gram-positive cocci gave concordant results with MALDI-TOF on isolated bacteria in 87 % of cases (37 % with score > 2.0). The direct method herein developed allows rapid identification (within 30 min) of Gram-negative bacteria and Gram-positive cocci from positive blood cultures and can be used to rapidly report reliable and accurate results, without requiring skilled personnel or the use of expensive kits.
DOI: 10.1128/jcm.44.1.119-123.2006
发表时间: 2006-01-01
影响因子: 9.4
作者:
Peters, RPH;Savelkoul, PHM;van Agtmael, MA
通讯作者: van Agtmael, MA
DOI: 10.1128/jcm.05021-11
发表时间: 2012-02-01
影响因子: 9.4
作者:
Buchan, Blake W.;Riebe, Katherine M.;Ledeboer, Nathan A.
通讯作者: Ledeboer, Nathan A.
DOI: 10.1128/jcm.42.1.7-11.2004
发表时间: 2004-01-01
影响因子: 9.4
作者:
Bruins, MJ;Bloembergen, P;Wolfhagen, MJHM
通讯作者: Wolfhagen, MJHM
DOI: 10.1016/j.diagmicrobio.2012.01.010
发表时间: 2012-05-01
影响因子: 2.9
作者:
Saffert, Ryan T.;Cunningham, Scott A.;Patel, Robin
通讯作者: Patel, Robin
DOI: 10.1007/s10096-011-1449-x
发表时间: 2012-07-01
影响因子: 4.5
作者:
Juiz, P. M.;Almela, M.;Vila, J.
通讯作者: Vila, J.