Adaptation of red blood cell lysis represents a fundamental breakthrough that improves the sensitivity of almonella detection in blood

dc.contributor.authorBoyd, M. A.
dc.contributor.authorTennant, S. M.
dc.contributor.authorMelendez, Johan
dc.contributor.authorToema, D.
dc.contributor.authorGalen, J. E.
dc.contributor.authorGeddes, Chris
dc.contributor.authorLevine, M. M.
dc.date.accessioned2024-10-01T18:05:30Z
dc.date.available2024-10-01T18:05:30Z
dc.date.issued2015-01-29
dc.description.abstractAims Isolation of Salmonella Typhi from blood culture is the standard diagnostic for confirming typhoid fever but it is unavailable in many developing countries. We previously described a Microwave Accelerated Metal Enhanced Fluorescence (MAMEF)-based assay to detect Salmonella in medium. Attempts to detect Salmonella in blood were unsuccessful, presumably due to the interference of erythrocytes. The objective of this study was to evaluate various blood treatment methods that could be used prior to PCR, real-time PCR or MAMEF to increase sensitivity of detection of Salmonella. Methods and Results We tested ammonium chloride and erythrocyte lysis buffer, water, Lymphocyte Separation Medium, BD Vacutainer® CPT™ Tubes and dextran. Erythrocyte lysis buffer was the best isolation method as it is fast, inexpensive and works with either fresh or stored blood. The sensitivity of PCR- and real-time PCR detection of Salmonella in spiked blood was improved when whole blood was first lysed using erythrocyte lysis buffer prior to DNA extraction. Removal of erythrocytes and clotting factors also enabled reproducible lysis of Salmonella and fragmentation of DNA, which are necessary for MAMEF sensing. Conclusions Use of the erythrocyte lysis procedure prior to DNA extraction has enabled improved sensitivity of Salmonella detection by PCR and real-time PCR and has allowed lysis and fragmentation of Salmonella using microwave radiation (for future detection by MAMEF). Significance and Impact of the Study Adaptation of the blood lysis method represents a fundamental breakthrough that improves the sensitivity of DNA-based detection of Salmonella in blood.
dc.description.sponsorshipThis work was supported by a grant (OPP1039437) fromthe Bill and Melinda Gates Foundation (PI, M.M.Levine). Additional support for JHM was provided byNIH/NIGMS T32GM066706 (K. Radtke). The funder hadno role in the study design, data collection and analysis,decision to publish or preparation of the manuscript.
dc.description.urihttps://onlinelibrary.wiley.com/doi/abs/10.1111/jam.12769
dc.format.extent11 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2uynd-dkoy
dc.identifier.citationBoyd, M.a., S.m. Tennant, J.h. Melendez, D. Toema, J.e. Galen, C.d. Geddes, and M.m. Levine. ‘Adaptation of Red Blood Cell Lysis Represents a Fundamental Breakthrough That Improves the Sensitivity of Almonella Detection in Blood’. Journal of Applied Microbiology 118, no. 5 (2015): 1199–1209. https://doi.org/10.1111/jam.12769.
dc.identifier.urihttps://doi.org/10.1111/jam.12769
dc.identifier.urihttp://hdl.handle.net/11603/36580
dc.language.isoen_US
dc.publisherWiley
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Institute of Fluorescence (IoF)
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Chemistry & Biochemistry Department
dc.relation.ispartofUMBC Student Collection
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectsensitive
dc.subjectdetection
dc.subjectSalmonella
dc.subjectPCR
dc.subjectdiagnostic
dc.subjecttyphoid
dc.subjectinvasive
dc.subjectblood
dc.titleAdaptation of red blood cell lysis represents a fundamental breakthrough that improves the sensitivity of almonella detection in blood
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-9110-6374

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