Abstract:
:We aimed to explore the potential of matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) for early identification of dominant Enterococcus faecium (Efm) clones involved in human infections. Well-characterized Efm isolates (n=77), analyzed by pulsed-field gel electrophoresis and multilocus sequence typing(eBURST and BAPS [Bayesian analysis of population structure] algorithms), and belonging to different hospital (n=53) and community (n=24) phylogenomic groups, were tested. Mass spectra (Bruker) were analyzed by visual inspection and different chemometric tools. Discrimination between groups comprising isolates commonly found in hospitals (BAPS 2.1a, 3.3a1, 3.3a2) and community (BAPS 2.1b and 3.2) was achieved with >99% accuracy, while identification of sequence types belonging to different BAPS subgroups was associated with >95% correct predictions. Our work is a proof of concept with regard to the suitability of MALDI-TOF MS in the identification of high-risk Efm clones. Further studies including strains from a wider variety of clones and sources will strengthen the potential of the workflow here described.
journal_name
Diagn Microbiol Infect Disjournal_title
Diagnostic microbiology and infectious diseaseauthors
Freitas AR,Sousa C,Novais C,Silva L,Ramos H,Coque TM,Lopes J,Peixe Ldoi
10.1016/j.diagmicrobio.2016.12.007subject
Has Abstractpub_date
2017-04-01 00:00:00pages
299-307issue
4eissn
0732-8893issn
1879-0070pii
S0732-8893(16)30425-4journal_volume
87pub_type
杂志文章abstract::T2 Magnetic Resonance Candida Panel (T2MR) detects Candida directly in blood. Rapid turnaround time and high negative predictive value make it a useful diagnostic test to support antifungal discontinuation. This retrospective quasi-experiment compared empiric anidulafungin days of therapy (DOTs) in intensive care unit...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2019.04.016
更新日期:2019-10-01 00:00:00
abstract::An integrated system capable of sample pretreatment using antibody-conjugated magnetic beads and one-step reverse transcriptase-polymerase chain reaction (RT-PCR) on a microfluidic system was developed to accelerate the detection of RNA viruses such as dengue virus or enterovirus 71. The targeted virus in the sample w...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2007.07.010
更新日期:2008-01-01 00:00:00
abstract::Pulmonary tuberculosis (TB) is one of the common risk factors for chronic pulmonary aspergillosis (CPA). A positive Aspergillus IgG is a key element of the diagnosis of CPA but this has not been studied in Indonesia. We conducted studies with patients at the end of TB therapy in Indonesia. We performed receiver operat...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2020.115124
更新日期:2020-11-01 00:00:00
abstract::To eliminate variability due to nonspecific stimulation or inhibition by different lots of fetal bovine serum, the activation of human peripheral blood mononuclear cells in a modification of Iscove's medium (medium C-IMDM) was compared with the routinely used Roswell Park Memorial Institute (RPMI)-1640 medium containi...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/0732-8893(86)90099-4
更新日期:1986-03-01 00:00:00
abstract::In this study, we evaluated the Light Diagnostics SimulFluor HSV/VZV Immunofluorescence (SIM) assay. A total of 167 specimens yielded 21 VZV and 55 HSV true positive test results. The sensitivity/specificity of the SIM assay for VZV and HSV were, respectively, 100/98 and 62/99. These results were comparable to the res...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/s0732-8893(99)00078-4
更新日期:1999-11-01 00:00:00
abstract::Treatment options for multidrug-resistant pathogens remain problematic in many regions and individual countries, warranting ongoing surveillance and analysis. Limited antimicrobial susceptibility information is available for pathogens from Vietnam. This study determined the bacterial susceptibility of aerobic gram-neg...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2014.05.009
更新日期:2014-08-01 00:00:00
abstract::Typing of bacterial isolates has been used for decades to study local outbreaks as well as in national and international surveillances for monitoring newly emerging resistant clones. Despite being recognized as a nosocomial pathogen, the precise modes of transmission of Stenotrophomonas maltophilia in health care sett...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章,评审
doi:10.1016/j.diagmicrobio.2014.11.005
更新日期:2015-03-01 00:00:00
abstract::Gepotidacin (GSK2140944) is a first in class, novel triazaacenaphthylene bacterial type II topoisomerase inhibitor in Phase 3 clinical development for the treatment of gonorrhea and uncomplicated urinary tract infections (acute cystitis). This study tested the equivalency of minimal inhibitory concentrations (MICs) ob...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2020.115107
更新日期:2020-10-01 00:00:00
abstract::Respiratory syncytial virus (RSV) often causes respiratory illness in adults. Over 40 RSV vaccine and monoclonal antibody products are currently in preclinical development or clinical trials. Because RSV diagnostic practices may impact disease burden estimates, we investigated infectious disease physicians' RSV diagno...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2017.12.011
更新日期:2018-11-01 00:00:00
abstract::We developed an assay to identify Burkholderia cepacia complex genomovars by Pyrosequencing of a variable recA gene segment. Fifteen reference strains and 30 clinical isolates of B. cepacia complex were sequenced. Full 77-base pair target sequences were obtained from 44 of the 45 isolates, and BLAST queries of the seq...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2007.02.011
更新日期:2007-08-01 00:00:00
abstract::Group-C beta-hemolytic streptococci (GCBHS) is an uncommon cause of bacteremia. In a 5-year period, GCBHS accounted for 0.28% of positive blood cultures and 0.35% of bacteremias documented at our hospital. The incidence of GCBHS bacteremia was 0.05 episodes per 1000 admissions. We were able to analyze clinical data of...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/0732-8893(92)90040-z
更新日期:1992-02-01 00:00:00
abstract::Although multiple antimicrobial resistance (AMR) determinants can confer the same in vitro antimicrobial susceptibility testing (AST) phenotype, their differing effect on optimal therapeutic choices is uncertain. Using a large population-based collection of clinical strains spanning a 3.5-year period, we applied WGS t...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2020.115149
更新日期:2020-11-01 00:00:00
abstract::The elderly are at increased risk for respiratory tract infections. To evaluate the safety and efficacy of gatifloxacin in adults of any age with community-acquired respiratory tract infections, this open-label, multicenter, noncomparative study in community-based practices enrolled male and female outpatients at leas...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/s0732-8893(02)00458-3
更新日期:2002-09-01 00:00:00
abstract::We developed and evaluated a method to genotypically identify enterotoxigenic Escherichia coli (ETEC) and to characterize these organisms with respect to 18 of 21 known colonization factors (CFs). The method, which is based on polynucleotide DNA-DNA colony hybridization, includes a pooled toxin probe assay to identify...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/s0732-8893(02)00504-7
更新日期:2003-02-01 00:00:00
abstract::Since the introduction of matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) in routine microbiology laboratories, identification of anaerobic bacteria has become easier. These increased possibilities provide new challenges concerning analytical workup and reporting of anaerobe...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章,评审
doi:10.1016/j.diagmicrobio.2016.06.004
更新日期:2016-09-01 00:00:00
abstract::Complicated skin and skin structure infections (cSSSIs) and intra-abdominal infections (IAIs) are problematic due to decreasing therapeutic options available against multidrug-resistant pathogens common among these types of infections. A total of 2245 isolates from African and the Middle Eastern (AfME) countries were ...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2014.01.017
更新日期:2014-05-01 00:00:00
abstract::Enteroviruses were isolated from 14 of 31 frozen serum specimens obtained from hospitalized patients with enterovirus infection, which had been previously documented by recovery of virus from stool, throat, or cerebrospinal fluid (CSF). Virus was detected in 71% of the positive sera within 3 days of specimen inoculati...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/0732-8893(84)90069-5
更新日期:1984-09-01 00:00:00
abstract::During dengue outbreaks, acute diagnosis at the patient's point of need followed by appropriate supportive therapy reduces morbidity and mortality. To facilitate needed diagnosis, we developed and optimized a reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay that detects all 4 serotypes of d...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2015.05.004
更新日期:2015-09-01 00:00:00
abstract::In recent years, Clostridium spp. have rapidly reemerged as human and animal pathogens. The detection and identification of pathogenic Clostridium spp. is therefore critical for clinical diagnosis and antimicrobial therapy. Traditional diagnostic techniques for clostridia are laborious, are time consuming, and may adv...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2009.09.014
更新日期:2010-02-01 00:00:00
abstract::Two automated systems, BD Phoenix and bioMérieux Vitek 2, were compared to a double-disk diffusion method for the detection of inducible resistance to clindamycin in Staphylococcus spp. Analysis of 524 clinical isolates revealed sensitivity and specificity of 100% and 99.6%, respectively, for Phoenix and 91.1% and 99....
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2011.12.003
更新日期:2012-03-01 00:00:00
abstract::The constitutive or inducible macrolide-lincosamide-streptogramin (MLS) phenotype of 30 erm(B)-positive Streptococcus pyogenes isolates was determined by different methods and under various growth conditions and correlated to the sequence of the 5'-untranslated regions of erm(B). The MLS phenotype of one-third of the ...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2011.03.017
更新日期:2011-07-01 00:00:00
abstract::The present study was conducted to investigate the prevalence and diversity of Arcobacter and Campylobacter spp. in 298 stool samples of patients with diarrhoea, collected from 22 Portuguese hospitals, between September and November 2012. Detection of Arcobacter and Campylobacter spp. was performed using molecular-bas...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章,多中心研究
doi:10.1016/j.diagmicrobio.2013.11.021
更新日期:2014-03-01 00:00:00
abstract::Animal lung macrophages or human peripheral blood mononuclear cells have been used for testing intracellular activity of anti-Legionella antibiotics; such studies are labor intensive such that comparative antibiotic studies for the many Legionella species are few. We evaluated a human monocyte cell line (HL-60) as an ...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/s0732-8893(97)00174-0
更新日期:1998-01-01 00:00:00
abstract::The incidence of carbapenem-resistant Pseudomonas aeruginosa (CRPA) bacteremia has increased in recent years, and infections caused by CRPA result in higher mortality than those caused by susceptible strains. This study was performed to evaluate the risk factors for mortality and to study the impact of virulence facto...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2014.07.003
更新日期:2014-10-01 00:00:00
abstract::To diagnose Lyme disease, a two-tier testing algorithm is used in which supplemental IgM and IgG immunoblots to detect antibody to Borrelia burgdorferi are reflexively performed if a first-tier assay, such as a whole-cell sonicate-based enzyme immunoassay (WCS EIA), is reactive. Recent data suggest that equal specific...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2018.02.006
更新日期:2018-07-01 00:00:00
abstract::Three persons became victims of a serial knife stabbing in a fight. Three months later, one of the victims presented with acute hepatitis. On the fifth day of his admission to the hospital, another victim of this serial stabbing presented to our clinic with acute hepatitis B infection. The patients told that the first...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2012.07.009
更新日期:2012-11-01 00:00:00
abstract::We conducted a retrospective review of the clinical data on patients with polymicrobial candidemia during a nine-year period (1992-2000) at our tertiary care University Hospital. Also, the clinical features of patients with polymicrobial vs monomicrobial candidemia were compared. There were 16 (5.2%) patients with mul...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章,评审
doi:10.1016/s0732-8893(02)00460-1
更新日期:2002-12-01 00:00:00
abstract::A 10-min fecal preparation results in greater specimen turbidity than a 45-min protocol, but reverse transcriptase polymerase chain reaction (RT-PCR) norovirus test sensitivity is essentially the same. Feces processed so that particle size does not exceed approximately 560 nm do not display greater norovirus RT-PCR in...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2008.08.006
更新日期:2010-02-01 00:00:00
abstract::Carbapenem susceptibility in Enterobacteriaceae (M9921, M9959) revealed the presence of MBLs bla(VIM-2) (M9959) and bla(IMP-8) (M9921), both as first cassettes of class-1-integrons. ESBL bla(PER-2) was detected in both strains and M9921 also harboured qnrB10, aac(6')-Ib and aac(6')-Ib-cr. This is the first report of M...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/j.diagmicrobio.2010.08.025
更新日期:2011-01-01 00:00:00
abstract::Three cross-reactive monoclonal antibodies (MAbs) of IgM and IgG2b isotype were generated in two separate fusions after immunization of BALB/c mice with heat killed Salmonella minnesota R595 of Re chemotype and acid-treated bacteria, coated with Re lipopolysaccharide (LPS) antigen. The specificity of the MAbs was demo...
journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/s0732-8893(02)00545-x
更新日期:2003-04-01 00:00:00