Capsaicin pretreatment does not inhibit allergen-induced airway microvascular leakage in guinea pig.

Lötvall, J O; Hui, K P; Löfdahl, C G; Barnes, P J; Chung, K F · Allergy · 1991

basic_science · Level V

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Abstract

We have studied the effects of tachykinin-depletion on airway microvascular leakage induced by allergen challenge in ovalbumin-sensitised guinea pigs. Tachykinin-depletion was obtained by capsaicin pretreatment 1 week before inhaled allergen challenge. Capsaicin pretreatment did not change airway microvascular permeability induced by allergen challenge. Thus, sensory neuropeptides may not be important in allergen-induced acute airway microvascular leakage in guinea pig in vivo.

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