Abstract：
:A rapid and reliable bacterial source tracking (BST) method is essential to counter risks to human health posed by fecal contamination of surface waters. Genetic fingerprinting methods, such as repetitive sequence based-PCR (rep-PCR), have shown promise as BST tools but are time-consuming and labor-intensive. In this work, we investigate the ability of MALDI-TOF-MS to characterize and discriminate between closely related environmental strains of Escherichia coli and to classify them according to their respective sources. We compared the performance of a rapid MALDI-TOF-MS-based method to a commonly used rep-PCR-based method that employs the BOX-A1R primer. Among the criteria evaluated were repeatability and the ability of each method to group E. coli isolates according to their respective sources. Our data suggest that the MALDI-TOF-MS-based approach has a lower repeatability level compared to rep-PCR but offers an improved ability to correctly assign E. coli isolates to specific source groups. In addition, we have identified five biomarkers that appear conserved among avian species. We conclude that MALDI-TOF-MS may represent a promising, novel and rapid approach to addressing the problem of fecal contamination of surface waters and warrants further investigation.
journal_name
J Microbiol Methodsjournal_title
Journal of microbiological methodsauthors
Siegrist TJ,Anderson PD,Huen WH,Kleinheinz GT,McDermott CM,Sandrin TRdoi
10.1016/j.mimet.2006.10.012subject
Has Abstractpub_date
2007-03-01 00:00:00pages
554-62issue
3eissn
0167-7012issn
1872-8359pii
S0167-7012(06)00327-7journal_volume
68pub_type
杂志文章abstract：:Rapid and sensitive detection of extended-spectrum β-lactamases (ESBLs) is essential for infection control and antimicrobial treatment. Recently, a matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS)-based MBT STAR-BL software module has been used for detecting β-lactamase activ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2019.105734
更新日期：2019-12-01 00:00:00
abstract：:Plant-associated bacteria produce quorum sensing (QS) signals for community (biofilm) formation and functioning in the rhizosphere. The QS-positive biofilm-forming rhizobacteria that excel benefits to the plants are now gaining increased importance for agricultural use due to their high competitiveness. However, there...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2018.11.018
更新日期：2019-01-01 00:00:00
abstract：:The Carba NP test was developed to detect carbapenemase-producing Enterobacteriaceae, and uses imipenem as the reaction substrate. In Japan, IMP-6 metallo-β-lactamase (MBL) producers, which are usually resistant to meropenem but susceptible to imipenem, and IMP-1 MBL producers, which are usually resistant to both carb...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2016.12.015
更新日期：2017-02-01 00:00:00
abstract：:Watermelon peel waste (WPW) is a zero value material containing a high amount of nutrients that could be utilized in microbial growth medium production. In the present work, WPW was used to produce universal fungal growth medium with great nutritional profile to use instead of other expensive media particularly the Po...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2019.105802
更新日期：2020-01-01 00:00:00
abstract：:Serological tests, such as agglutination and indirect hemagglutination assay (IHA), have been used to identify antibodies against Pasteurella multocida in poultry sera, but none are highly sensitive. An enzyme-linked immunosorbent assays (ELISA) has been used with varying degrees of success in attempts to monitor sero...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2017.08.018
更新日期：2017-11-01 00:00:00
abstract：:A pair of polymerase chain reaction (PCR) primers was designed on the basis of the nucleotide sequence homology of dextranase genes (dex) of Streptococcus mutans, S. sobrinus and S. downei. The primer pair amplified a 530-bp DNA fragment on the dex genes of mutans streptococcal species: S. mutans, S. sobrinus, S. down...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(01)00263-9
更新日期：2001-08-01 00:00:00
abstract：:Contaminated eukaryotic cell cultures are frequently responsible for unreliable results. Regulatory entities request that cell cultures must be mycoplasma-free. Mycoplasma contamination remains a significant problem for cell cultures and may have an impact on biological analysis since they affect many cell parameters....
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2015.08.010
更新日期：2015-11-01 00:00:00
abstract：:Human viral contamination in drinking and recreational water may persist for extensive periods of time and cause a significant health risk concern. The aim of this study is to evaluate a viral recovery method using a new electropositive charged nanoalumina filter and to compare results with the widely used negatively ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2010.01.018
更新日期：2010-04-01 00:00:00
abstract：:This article presents an experimental design for measuring the mRNA expression in Salmonella enterica of the mntH gene in phagosome-mimicking conditions. The expression of mntH was quantified by real-time reverse transcription PCR for different S. enterica strains of porcine origin under different biological growth co...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2005.11.003
更新日期：2006-07-01 00:00:00
abstract：:A rapid immunological method for trapping and selection of functionally regulated prokaryotic promoters is described. The method is based on application of a novel mini-Tn5 derived promoter probe (pUTTKZY-promoterless lacZY as a reporter and kanamycin resistance) to mutagenise a plant growth promoting fluorescent pseu...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(00)00139-1
更新日期：2000-06-01 00:00:00
abstract：:Fluorescence in situ hybridization (FISH) can provide information on the morphology, spatial arrangement, and local environment of individual cells enabling the investigation of intact microbial communities. GeneFISH uses polynucleotide probes and enzymatic signal amplification to detect genes that are present in low ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2021.106147
更新日期：2021-01-22 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：:An improved approach for simultaneous detection of Cryptosporidium parvum and Giardia lamblia (oo)cysts in soil is described. Recoveries>70% were obtained for concentrations>55 and 21 (oo)cysts g(-1) for C. parvum and G. lamblia, respectively. The limits of detection were determined to be<5 (oo)cysts g(-1) soil. ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2013.07.019
更新日期：2013-09-01 00:00:00
abstract：:Traditional culture and biochemical tests (CBT) were compared with PCR for sensitivity and detection of Brachyspira hyodysenteriae and Brachyspira pilosicoli in seeded faeces and clinical samples from diarrhoeic pigs. A duplex PCR system was developed based on primers detecting the tlyA-gene of B. hyodysenteriae and t...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2005.12.008
更新日期：2006-08-01 00:00:00
abstract：:Preservation of strains is important to further studies and characterization; we have shown a technique of long-term preservation of Neisseria spp. and Haemophilus spp. by freezing cotton tip swabs impregnated with fastidious organisms at -80 °C without the addition of cryoprotectants. ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2020.105969
更新日期：2020-08-01 00:00:00
abstract：:A rapid sonication method for lysis of Gram-positive bacteria was evaluated for use in combination with quantitative real-time polymerase chain reaction (PCR) analyses for detection. Other criteria used for evaluation of lysis were microscopic cell count, colony forming units (cfu), optical density at 600 nm and total...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(03)00091-5
更新日期：2003-10-01 00:00:00
abstract：:Microarrays have allowed gene expression profiling to progress from the gene level to the genome level, and oligonucleotide microarrays have become the platform of choice for large-scale, targeted gene expression studies. cDNA arrays and spotted oligonucleotide arrays have gradually given way to in situ synthesized ol...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2013.12.009
更新日期：2014-02-01 00:00:00
abstract：:The immunoglobulin degrading enzyme of Streptococcus pyogenes, IdeS, is an unusual cysteine protease produced by group A streptococci for which the only known substrate is immunoglobulin G (IgG). To date, IdeS has not been found to cleave any of the known synthetic substrates that other cysteine proteases hydrolyse, t...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2007.04.017
更新日期：2007-08-01 00:00:00
abstract：:Here we present the use of three fluorescent proteins in Staphylococcus aureus, Cerulean, PA-GFP, and mRFPmars. All molecules have an improved codon adaptation for expression in the A + T rich organisms and extend the fluorescent protein portfolio in staphylococcal research. ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2010.07.022
更新日期：2010-10-01 00:00:00
abstract：:The antimicrobial activity of lime oil was significantly enhanced against Staphylococcus epidermidis in a pulsed electromagnetic field. These findings support other workers who found that electromagnetic fields augment antimicrobial activity. ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2010.09.015
更新日期：2010-11-01 00:00:00
abstract：:Synthesis and application of reliable nanoscale materials is a progressive domain and the limelight of modern nanotechnology. Conventional physicochemical approaches for the synthesis of metal nanoparticles have become obsolete owing to costly and hazardous materials. There is a need to explore alternative, cost-effec...
journal_title：Journal of microbiological methods
pub_type： 杂志文章,评审
doi：10.1016/j.mimet.2019.02.010
更新日期：2019-04-01 00:00:00
abstract：:In this research work, the synthesis of Ag doped hydroxyapatite coatings for dental or orthopedic implants was performed. The main goal was to determine the influence of Ag content on the roughness and antimicrobial performance of the prepared thin films. The films were deposited on Ti6Al4V alloy by means of RF magnet...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2016.03.016
更新日期：2016-06-01 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：:The present study describes the development of a simple and efficient screening system that allows identification and quantification of nine bacteriocins produced by Lactococcus lactis. Cell-free L. lactis extracts presented a broad spectrum of antibacterial activity, including Gram-negative bacteria, Gram-positive ba...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2016.06.003
更新日期：2016-08-01 00:00:00
abstract：:Microsporidia is a term used to describe a group of emerging protozoan pathogens whose environmental occurrence has only recently been documented due to lack of detection methodologies. This study evaluates and describes current methods for detection of microsporidia in water. Standard methods, for the collection and ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/s0167-7012(98)00101-8
更新日期：1999-02-01 00:00:00
abstract：:Thanks to their photosynthetic and nutritive properties, cyanobacteria of the Arthrospira genus are of interest as food supplements, as efficient oxygen producing life support system organisms for manned space flight, and for the production of biofuels. Despite these potential valuable applications, full genome sequen...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2009.11.012
更新日期：2010-02-01 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：:In this study, a simple and rapid method was developed to transform protein A producing Staphylococcus aureus cells into red color and red fluorescent nanobioparticles, which were homogeneous, dispersive and relatively stable with a uniform size of 800 nm. The method consists of reaction with a monotetrazolium redox d...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2015.04.018
更新日期：2015-08-01 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：:Many methods are developed to assess antimicrobial action of ZnO nanoparticles (NPs). A large number of methods associated with the use of fluorescent probes are developed, including Spectrofluorometry, fluorescence microscopy, and cytometry. In this study, flowcytometry, Spectrofluorometry and fluorescent microscopy ...
journal_title：Journal of microbiological methods
pub_type： 杂志文章
doi：10.1016/j.mimet.2020.105920
更新日期：2020-06-01 00:00:00
