ŠEDO, Ondrej and Zbyněk ZDRÁHAL. Modulation of the Discriminatory Power of MALDI-TOF MS Profiling for Distinguishing between Closely Related Bacterial Strains. In Plamen Demirev. Applications of Mass Spectrometry in Microbiology. Cham: Springer International Publishing Switzerland, 2016, p. 185-202. ISBN 978-3-319-26068-6. Available from: https://dx.doi.org/10.1007/978-3-319-26070-9_7.
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Basic information
Original name Modulation of the Discriminatory Power of MALDI-TOF MS Profiling for Distinguishing between Closely Related Bacterial Strains
Authors ŠEDO, Ondrej (203 Czech Republic, belonging to the institution) and Zbyněk ZDRÁHAL (203 Czech Republic, guarantor, belonging to the institution).
Edition Cham, Applications of Mass Spectrometry in Microbiology, p. 185-202, 18 pp. 2016.
Publisher Springer International Publishing Switzerland
Other information
Original language English
Type of outcome Chapter(s) of a specialized book
Field of Study 10406 Analytical chemistry
Country of publisher Switzerland
Confidentiality degree is not subject to a state or trade secret
Publication form printed version "print"
WWW URL
RIV identification code RIV/00216224:14740/16:00094042
Organization unit Central European Institute of Technology
ISBN 978-3-319-26068-6
Doi http://dx.doi.org/10.1007/978-3-319-26070-9_7
Keywords in English MALDI-TOF MS; microbiology; bacteria identification
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Changed by Changed by: Mgr. Eva Špillingová, učo 110713. Changed: 27/4/2017 16:30.
Abstract
The demands on MALDI-TOF MS profiling analyses for distinguishing between closely related bacterial strains are high compared to those for routine identification of bacterial species. Analytical success depends on detection of a significantly lower number of peaks, which requires a high degree of robustness in the method. For example, the influence of cultivation conditions was found to notably contribute to the discriminatory power of the method, as we have demonstrated in two examples concerning differentiation between strains of the Lactobacillus acidophilus group and selected Mycobacterium spp. The absence of specific signals in other examples concerning strains within the Acinetobacter calcoaceticus-Acinetobacter baumannii complex, Staphylococcus aureus, and Bacillus subtilis ecotypes led to the development of two alternative sample preparation protocols. By switching to an alternative matrix solution or by microwave-assisted tryptic digestion of the cellular material, these simple approaches enabled detection of new specific signals.
Links
ED1.1.00/02.0068, research and development projectName: CEITEC - central european institute of technology
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