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Confirmation of botulism in birds and cattle by the mouse bioassay and Endopep-MS
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry, Analytical Pharmaceutical Chemistry.
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2011 (English)In: Journal of Medical Microbiology, ISSN 0022-2615, E-ISSN 1473-5644, Vol. 60, no 9, 1299-1305 p.Article in journal (Refereed) Published
Abstract [en]

There have been several outbreaks of botulism among poultry and wild birds in Sweden in recent years. The National Veterinary Institute of Sweden (SVA) has identified botulinum neurotoxin (BoNT)/C1 or the mosaic BoNT/C1D using the mouse bioassay. This is believed to be the first report on the application of the Endopep mass spectrometry (Endopep-MS) method to selected clinical animal (serum and liver) samples and a feed sample that had previously given positive test results with the mouse bioassay. In the mouse bioassay eight of the eleven samples were found to be neutralized by both BoNT/C1 and /D antitoxins; the other three were neutralized only by BoNT/C1 antitoxin, but the mice showed a prolonged survival time when the samples had been treated with /D antitoxin. The Endopep-MS analysis, on the other hand, demonstrated only BoNT/C1 activity for all eleven samples. This suggests that at least eight of the samples were of the chimeric toxin type BoNT/C1D, where the enzymically active site is identical to that of BoNT/C1, while other parts of the protein contain sequences of BoNT/D. This is the first step of a cross-validation between the established mouse bioassay and the Endopep-MS of serotypes BoNT/C1 and /C1D. Endopep-MS is concluded to have potential as an attractive alternative to the mouse bioassay.

Place, publisher, year, edition, pages
2011. Vol. 60, no 9, 1299-1305 p.
National Category
Medicinal Chemistry Pharmaceutical Sciences
Research subject
Analytical Pharmaceutical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-159516DOI: 10.1099/jmm.0.031179-0ISI: 000295018700011PubMedID: 21566090OAI: oai:DiVA.org:uu-159516DiVA: diva2:445318
Available from: 2011-10-03 Created: 2011-10-03 Last updated: 2017-12-08Bibliographically approved

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