Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF").
Certain serovars of Salmonella enterica subsp. enterica cause invasive disease (e.g., enteric fever, bacteremia, septicemia, meningitis, etc.) in humans and constitute a global public health problem. A rapid, sensitive diagnostic test is needed to allow prompt initiation of therapy in individual pat...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2011-04-01
|
| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3073000?pdf=render |
| _version_ | 1811212809324724224 |
|---|---|
| author | Sharon M Tennant Yongxia Zhang James E Galen Chris D Geddes Myron M Levine |
| author_facet | Sharon M Tennant Yongxia Zhang James E Galen Chris D Geddes Myron M Levine |
| author_sort | Sharon M Tennant |
| collection | DOAJ |
| description | Certain serovars of Salmonella enterica subsp. enterica cause invasive disease (e.g., enteric fever, bacteremia, septicemia, meningitis, etc.) in humans and constitute a global public health problem. A rapid, sensitive diagnostic test is needed to allow prompt initiation of therapy in individual patients and for measuring disease burden at the population level. An innovative and promising new rapid diagnostic technique is microwave-accelerated metal-enhanced fluorescence (MAMEF). We have adapted this assay platform to detect the chromosomal oriC locus common to all Salmonella enterica subsp. enterica serovars. We have shown efficient lysis of biologically relevant concentrations of Salmonella spp. suspended in bacteriological media using microwave-induced lysis. Following lysis and DNA release, as little as 1 CFU of Salmonella in 1 ml of medium can be detected in <30 seconds. Furthermore the assay is sensitive and specific: it can detect oriC from Salmonella serovars Typhi, Paratyphi A, Paratyphi B, Paratyphi C, Typhimurium, Enteritidis and Choleraesuis but does not detect Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Streptococcus pneumoniae, Haemophilus influenzae or Acinetobacter baumanii. We have also performed preliminary experiments using a synthetic Salmonella oriC oligonucleotide suspended in whole human blood and observed rapid detection when the sample was diluted 1:1 with PBS. These pre-clinical data encourage progress to the next step to detect Salmonella in blood (and other ordinarily sterile, clinically relevant body fluids). |
| first_indexed | 2024-04-12T05:35:28Z |
| format | Article |
| id | doaj.art-4f1609f86a3e4d069f9349484aaf82bc |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-12T05:35:28Z |
| publishDate | 2011-04-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-4f1609f86a3e4d069f9349484aaf82bc2022-12-22T03:45:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-04-0164e1870010.1371/journal.pone.0018700Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF").Sharon M TennantYongxia ZhangJames E GalenChris D GeddesMyron M LevineCertain serovars of Salmonella enterica subsp. enterica cause invasive disease (e.g., enteric fever, bacteremia, septicemia, meningitis, etc.) in humans and constitute a global public health problem. A rapid, sensitive diagnostic test is needed to allow prompt initiation of therapy in individual patients and for measuring disease burden at the population level. An innovative and promising new rapid diagnostic technique is microwave-accelerated metal-enhanced fluorescence (MAMEF). We have adapted this assay platform to detect the chromosomal oriC locus common to all Salmonella enterica subsp. enterica serovars. We have shown efficient lysis of biologically relevant concentrations of Salmonella spp. suspended in bacteriological media using microwave-induced lysis. Following lysis and DNA release, as little as 1 CFU of Salmonella in 1 ml of medium can be detected in <30 seconds. Furthermore the assay is sensitive and specific: it can detect oriC from Salmonella serovars Typhi, Paratyphi A, Paratyphi B, Paratyphi C, Typhimurium, Enteritidis and Choleraesuis but does not detect Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Streptococcus pneumoniae, Haemophilus influenzae or Acinetobacter baumanii. We have also performed preliminary experiments using a synthetic Salmonella oriC oligonucleotide suspended in whole human blood and observed rapid detection when the sample was diluted 1:1 with PBS. These pre-clinical data encourage progress to the next step to detect Salmonella in blood (and other ordinarily sterile, clinically relevant body fluids).http://europepmc.org/articles/PMC3073000?pdf=render |
| spellingShingle | Sharon M Tennant Yongxia Zhang James E Galen Chris D Geddes Myron M Levine Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF"). PLoS ONE |
| title | Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF"). |
| title_full | Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF"). |
| title_fullStr | Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF"). |
| title_full_unstemmed | Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF"). |
| title_short | Ultra-fast and sensitive detection of non-typhoidal Salmonella using microwave-accelerated metal-enhanced fluorescence ("MAMEF"). |
| title_sort | ultra fast and sensitive detection of non typhoidal salmonella using microwave accelerated metal enhanced fluorescence mamef |
| url | http://europepmc.org/articles/PMC3073000?pdf=render |
| work_keys_str_mv | AT sharonmtennant ultrafastandsensitivedetectionofnontyphoidalsalmonellausingmicrowaveacceleratedmetalenhancedfluorescencemamef AT yongxiazhang ultrafastandsensitivedetectionofnontyphoidalsalmonellausingmicrowaveacceleratedmetalenhancedfluorescencemamef AT jamesegalen ultrafastandsensitivedetectionofnontyphoidalsalmonellausingmicrowaveacceleratedmetalenhancedfluorescencemamef AT chrisdgeddes ultrafastandsensitivedetectionofnontyphoidalsalmonellausingmicrowaveacceleratedmetalenhancedfluorescencemamef AT myronmlevine ultrafastandsensitivedetectionofnontyphoidalsalmonellausingmicrowaveacceleratedmetalenhancedfluorescencemamef |