Abstract：
:Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and chromogenic media are widely used in clinical microbiology laboratories to facilitate the rapid selection and identification of pathogens. The aim of this study was to evaluate whether usage of chromogenic media limits the diagnostic performance of MALDI-TOF MS for microbial identification. A total of 386 microorganisms collected and analyzed at five laboratories were included. Isolates were cultured on relevant chromogenic media and non-selective agar plates in parallel and identified using the Bruker MALDI-TOF MS. Among the tested isolates, no misidentification was recorded and there was no medium-related difference in the identification level. However, score values were overall slightly but significantly lower for isolates grown on chromogenic media. In conclusion, the use of chromogenic culture media tested here had no relevant impact on MALDI-TOF MS performance for diagnostic purposes.
journal_name
J Microbiol Methodsjournal_title
Journal of microbiological methodsauthors
Lüthje P,Pranada AB,Carruthers-Lay D,Desjardins M,Gaillot O,Wareham D,Ciesielczuk H,Özenci Vdoi
10.1016/j.mimet.2017.03.001subject
Has Abstractpub_date
2017-05-01 00:00:00pages
17-20eissn
0167-7012issn
1872-8359pii
S0167-7012(17)30062-3journal_volume
136pub_type
杂志文章abstract：:Fourier-transform infrared (FTIR) spectroscopy was evaluated as an alternative method for serotyping encapsulated Streptococcus pneumonia strains. Sixty-nine invasive strains from the Microbiology Laboratory of the Medicine Faculty of University of Lisbon were selected for the analysis. The encapsulated strains used i...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2013.02.008
更新日期：2013-05-01 00:00:00
abstract：:Pleurotus ostreatus was transformed using the nourseothricin-resistant gene for the first time. The transformation efficiency was 1.3±0.6transformants/μg plasmid DNA. In addition, the transformation efficiency of the bialaphos-resistant gene was increased to 26.7±11.5transformants/μg plasmid DNA. ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2017.01.007
更新日期：2017-03-01 00:00:00
abstract：:An oligonucleotide-microarray method was developed for the detection of Kitasatospora species in soil samples. The 16S-23S rDNA internal transcribed spacer (ITS) sequence of these antibiotics-producing actinomycetes was applied to design short oligonucleotide probes. Two different 26-mers were synthesized, specific to...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2005.07.012
更新日期：2006-05-01 00:00:00
abstract：:Recently, we demonstrated that a matrix-assisted laser desorption/ionization time-of-flight mass spectrometer (MALDI-TOF MS) can be used to determine the molecular weight of polymerase chain reaction (PCR) products of intact 16S rRNA regions and to profile their restriction digests. This is the first time that MALDI-T...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(01)00314-1
更新日期：2002-02-01 00:00:00
abstract：OBJECTIVES:Galactomannan (GM) and Aspergillus DNA detection are useful tools for the diagnosis of invasive pulmonary aspergillosis (IPA), primarily in blood and bronchoscopy samples. This study aimed to evaluate the utility of both markers for detection of Aspergillus in sputum from patients with allergic bronchopulmon...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2017.06.016
更新日期：2017-09-01 00:00:00
abstract：:Test and evaluation of engineered biothreat agent detection systems ("biodetectors") are a challenging task for government agencies and industries involved in biosecurity and biodefense programs. In addition to user friendly features, biodetectors need to perform both highly sensitive and specific detection, and must ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2014.07.013
更新日期：2014-10-01 00:00:00
abstract：:A rapid bead assay for detecting pathogenic bacteria with a simple microfluidic chip-based system was developed. Five oligonucleotide probes corresponding to the 16S rRNA of the targeted bacteria were coupled covalently to fluorescent beads. Four species of bacteria (Escherichia coli, Salmonella enterica subsp. enteri...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2006.03.014
更新日期：2006-11-01 00:00:00
abstract：:The availability of some sorts of biological samples which require noninvasive collection methods has led to an even greater interest in applying molecular biology on visceral leishmaniasis (VL) diagnosis, since these samples increase the safety and comfort of both patients and health professionals. In this context, t...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2016.10.002
更新日期：2016-12-01 00:00:00
abstract：:A discontinuous lactate dehydrogenase coupled assay is described for the evaluation of the pyruvate carboxylase activity (Pc, EC 6.4.1.1) in a glutamate overproducing strain of Corynebacterium glutamicum. After an initial permeabilisation period of the cells, the method consisted of the fluorometric determination of t...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(99)00104-9
更新日期：1999-12-01 00:00:00
abstract：:To establish a simple and rapid high-resolution melting curve (HRM) method, 5 different strains of Salmonella were identified by adding DNA denaturants at different concentrations into the HRM system to change the characteristics of DNA melting and to obtain different Tm (dissolving temperature) values of DNA from dif...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2019.105806
更新日期：2020-05-01 00:00:00
abstract：:A digital image analysis method previously used to evaluate leaf color changes due to nutritional changes was modified to measure the severity of several foliar fungal diseases. Images captured with a flatbed scanner or digital camera were analyzed with a freely available software package, Scion Image, to measure chan...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2008.03.008
更新日期：2008-08-01 00:00:00
abstract：:Characterization of commercial microbial consortia products for human and environmental health risk assessment is a major challenge for regulatory agencies. As a means to develop an approach to assess the potential environmental risk of these products, research was conducted to compare four genomics methods for charac...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2014.11.013
更新日期：2015-01-01 00:00:00
abstract：:The aim of this study was to (i) design, develop and validate a practical and physiologically relevant reconstituted in vitro oral mucosa tissue model and (ii) to assess its applicability in in vitro host-pathogen interactions with C. albicans and S. aureus. Co-culture organotypic constructions were created by incorpo...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2018.07.004
更新日期：2018-09-01 00:00:00
abstract：:We report the development and evaluation of a serotype-specific xTAG luminex assay (SSA) that allows detection of the 33 serotypes of Streptococcus suis (S. suis). This assay is based on wzy gene targets directly involved in the cps biosynthesis and can be completed 40 min post-PCR amplification. The assay correctly a...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2015.07.018
更新日期：2015-10-01 00:00:00
abstract：:The latex agglutination test using single-chain antibody fragments (scFvStx1 and scFvStx2) coupled to latex particles, was compared with the gold standard Vero cell assay for Shiga toxin (Stx) detection, aiming to estimate the diagnosis potential of these scFv fragments in a rapid and straightforward test. The latex c...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2020.105965
更新日期：2020-08-01 00:00:00
abstract：:An optimized Citrobacter braakii phytase gene, appA-c, was chemically synthesized by oligonucleotides synthesis and over-lap PCR method. The appA-c gene encoding 423 amino acids was cloned into expression vector pPIC9 and transformed into methylotropic yeast Pichia pastoris. From about 2000 transformants, 400 transfor...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2009.08.018
更新日期：2009-10-01 00:00:00
abstract：:Rothia dentocariosa is an indigenous microbial flora of dental plaque. To examine the bacterium population in oral cavities, a novel selective medium, designated RDSM, was developed for the isolation of R. dentocariosa. RDSM was prepared by adding 0.5 μg/ml of lincomycin, 10 μg/ml of colistin, and 40% sucrose to Heart...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2012.07.004
更新日期：2012-10-01 00:00:00
abstract：:We aimed to establish the role of MALDI-TOF MS on species discrimination of phenotypically indistinguishable A. baumannii, A. pittii and A. nosocomialis. Compared to multiplex PCR, the gold standard, MALDI-TOF MS yielded a high sensitivity for A. baumannii (97.9%) and specificity for A. pittii (98.9%) and A. nosocomia...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2017.06.019
更新日期：2017-09-01 00:00:00
abstract：:Silver scurf caused by Helminthosporium solani causes significant economic losses in table stock, seed and processing potatoes. Specific polymerase chain reaction (PCR) primers, Hs1F1/Hs2R1, from H. solani were used for the amplification of a 447-bp product from 20 tissue samples and 54 single spore H. solani isolates...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(00)00240-2
更新日期：2001-02-01 00:00:00
abstract：:Streptococcus gordonii, a commensal bacterium of the human oral cavity, is a potential live vaccine vector. In this study, we have developed a system that delivers a vaccine antigen gene onto the chromosome of S. gordonii. The system consisted of a recipient strain, that is a thymidine auxotroph constructed by deletio...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2016.04.003
更新日期：2016-06-01 00:00:00
abstract：:Nanoparticles synthesized through the green route deserve special mention because this green technology is not only energy-efficient and cost-effective but also amenable to the environment. Various biological resources have been used for the generation of these 'green nanoparticles'. Biological wastes have also been f...
journal_title：Journal of microbiological methods
pub_type： 杂志文章,评审
doi：10.1016/j.mimet.2019.105766
更新日期：2019-12-01 00:00:00
abstract：:Traditionally, laboratory detection and identification of dermatophytes consists of culture and microscopy which yields results within approximately 2-6 weeks. In 2007 our medical microbiological diagnostic laboratory implemented a molecular method for the detection of dermatophytes. A real-time PCR assay was develope...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2011.01.023
更新日期：2011-04-01 00:00:00
abstract：:In H. polymorpha, there is still a lack of a highly efficient gene disruption method. To help address this issue, we presented a simple and efficient method for both single and multiple gene disruptions in H. polymorpha. The knockout system combined a variation of sticky-end polymerase chain reaction method (SEP), spl...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2009.09.004
更新日期：2009-12-01 00:00:00
abstract：:Recently, a unique method for bacterial transformation using nanofibers to inoculate DNA has been developed by Naoto Yoshida and colleagues. We have verified the principle, transforming Escherichia coli, Yersinia enterocolitica and Acinetobacter baumannii, and have established a user-friendly protocol. A buffered susp...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2009.12.002
更新日期：2010-02-01 00:00:00
abstract：:Although methods such as spectrophotometry are useful for identifying growth differences among bacterial strains, it is currently difficult to similarly determine whether bacteriophage strains differ in growth using high throughput methods. Here we use automated spectrophotometry to develop an in vitro method for indi...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2011.10.020
更新日期：2012-01-01 00:00:00
abstract：:The present study for the first time evaluates the serodiagnostic efficacy of two recombinant antigens namely, listeriolysin O (rLLO) and phosphatidyl-inositol phospholipase C (rPI-PLC). Indirect ELISA with the above recombinant antigens was used on samples collected from bovines (n=106), goats (n=138) and pigs (n=92)...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2017.04.005
更新日期：2017-06-01 00:00:00
abstract：:Enterococcus faecalis, a gram-positive opportunistic pathogen, has become one of the leading causes of nosocomial infections. Normally a resident of the gastrointestinal tract, extensive use of antibiotics has resulted in the rise of E. faecalis strains that are resistant to multiple antibiotics. This, compounded with...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2012.04.011
更新日期：2012-07-01 00:00:00
abstract：:We describe a method based on fluorescence in situ hybridisation (FISH) that allows the identification of individual cells by electron microscopy. We hybridised universal and specific fluorescein-labelled oligonucleotide probes to the ribosomal RNA of prokaryotic microorganisms in heterogeneous cell mixtures. We then ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2005.02.018
更新日期：2005-10-01 00:00:00
abstract：:The aim of this study was to evaluate diffusion and dilution methods for determining the antibacterial activity of plant extracts and their mixtures. Several methods for measurement of the minimal inhibitory concentration (MIC) of a plant extract are available, but there is no standard procedure as there is for antibi...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2010.02.004
更新日期：2010-05-01 00:00:00
abstract：:Flow cytometry was used to characterize bacterioplankton from two tropical environments in Brazil: the eutrophic Guanabara Bay and the oligotrophic southwest Atlantic Ocean. Bacterial abundance was evaluated by flow cytometry, and cells were stained with SYTO 13, allowing demonstration of differences in nucleic acid c...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2003.08.002
更新日期：2003-12-01 00:00:00
