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ORIGINAL ARTICLE

Tobacco Smoke is an Adjuvant for Maintained Airway Sensitization in Guinea Pigs

, Ph.D.
Pages 723-728 | Published online: 02 Jul 2009
 

Abstract

Tobacco smoke (TS) exposure exacerbates asthma and may induce airway hyperresponsiveness in asymptomatic individuals. We hypothesized that TS exposure is an adjuvant to airway responsiveness. Ovalbumin (OA) sensitized guinea pigs were TS or air exposed. At 30 exposure days OA airway responsiveness was demonstrable in OA-treated animals exposed to either TS or air. After 130 exposure days only TS-exposed guinea pigs demonstrated OA airway responsiveness. Capsaicin airway responsiveness developed in non-sensitized and OA-sensitized guinea pigs exposed to TS. Therefore TS-exposure acts as an adjuvant to antigenic and neurogenic airway responsiveness. Combined antigen and adjuvant avoidance may attenuate or reverse airway responsiveness.

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