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Whole-cell pertussis vaccine protects against Bordetella pertussis exacerbation of allergic asthma

Ennis, Darren P. and Cassidy, Joseph P. and Mahona, Bernard P. (2005) Whole-cell pertussis vaccine protects against Bordetella pertussis exacerbation of allergic asthma. Immunology Letters, 97. pp. 91-100.

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Abstract

The prevalence of asthma and allergic disease has increased in many countries and there has been speculation that immunization promotes allergic sensitization. Bordetella pertussis infection exacerbates allergic asthmatic responses. We investigated whether whole-cell pertussis vaccine (Pw) enhanced or prevented B.pertussis induced exacerbation of allergic asthma. Groups of mice were immunized with Pw, infected with B.pertussis and/or sensitized to ovalbumin. Immunological, pathological and physiological changes were measured to assess the impact of Pw immunization on immune deviation and airway function. Pw immunization modulated ovalbumin-specific serum IgE production, and reduced local and systemic IL-13 and other cytokine responses to sensitizing allergen. Histopathological examination revealed Pw immunization reduced the severity of airway pathology and decreased bronchial hyperreactivity to methacholine exposure. Pw does not enhance airway IL-13 and consequently does not enhance but protects against the exacerbation of allergic responses. We find no evidence of Pw contributing to allergic asthma, but rather provide evidence of a mechanism whereby whole-cell pertussis vaccination has a protective role.

Item Type: Article
Keywords: Bordetella pertussis; Vaccine; Asthma; IL-13; Allergen
Subjects: Science & Engineering > Biology
Item ID: 508
Depositing User: Dr. Bernard Mahon
Date Deposited: 03 May 2007
Journal or Publication Title: Immunology Letters
Publisher: Elsevier
Refereed: Yes
URI:

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