A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

A rapid ELISA-based method for screening Bordetella pertussis strain production of antigens included in current acellular pertussis vaccines




TekijätBarkoff A, Guiso N, Guillot S, Xing D, Markey K, Berbers G, Mertsola J, He Q

KustantajaELSEVIER SCIENCE BV

KustannuspaikkaAMSTERDAM; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

Julkaisuvuosi2014

JournalJournal of Immunological Methods

Tietokannassa oleva lehden nimiJournal of immunological methods

Lehden akronyymiJ.Immunol.Methods

Vuosikerta408

Aloitussivu142

Lopetussivu148

Sivujen määrä7

ISSN0022-1759

DOIhttps://doi.org/10.1016/j.jim.2014.06.001


Tiivistelmä

Introduction: Despite extensive vaccinations, there have been pertussis epidemics in many countries including the Netherlands, the UK, Australia and the USA. During these epidemics Bordetella pertussis strains not producing the vaccine antigen pertactin (Prn) are emerging and increasing in numbers. However, methods for confirming PRN production of B. pertussis isolates are combined PCR or PCR-based sequencing tests and western blotting. Furthermore, data about production of pertussis toxin (PT) and filamentous hemagglutinin (FHA) of these isolates are scarce. Fimbriae (Fim) production is usually determined by agglutination and reported as serotype. In this study we developed an easy, accurate and rapid method for screening PT and FHA production. Methods for Prn and Fim production have been published earlier. Methods: We analyzed altogether 109 B. pertussis strains, including 103 Finnish B. pertussis strains collected during 2006-2013, international strain Tohama I, French strains FR3496 (PT-negative), FR3693 (Prn-negative) and FR4624 (FHA-negative) and Fim-serotype reference strains SI (producing only Fim2) and S3 (producing only Fim3). An indirect ELISA with whole bacterial cells as coating antigen was developed and used for rapid screening of the B. pertussis strains. Production of different antigens (PT, FHA, Prn, Fim2 and Fim3) was detected with specific monoclonal antibodies (mAbs). Results: From the 103 Finnish B. pertussis strains tested, all were positive for PT, FHA and Fim. Four were found negative for Prn, and they were isolated during 2011-2013. Conclusions: The newly developed method proved to be useful and simple for rapid screening of different antigen production of B. pertussis isolates. (C) 2014 Elsevier B.V. All rights reserved.




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