Microvascular leakage, an essential component of inflammation, probably plays a critical role in asthma in producing plasma exudation and thickening of the bronchial mucosa which may underlie airway hyperresponsiveness. Several therapeutic approaches are possible to reduce this leakage, by blocking either the effects or the release of inflammatory mediators which induce the leakage. Drugs with these actions might be too specific to be of therapeutic value if many mediators are involved, as seems increasingly likely. Reduction of blood flow using selective vasoconstrictors is a more attractive approach and α1-adrenoceptor agonists may be of value. Drugs that act directly on endothelial cells are probably the most useful, since they would be effective irrespective of the mechanism of leakage. Corticosteroids probably have this property, but whether β-agonists or theophylline are clinically effective against airway microvascular leakage is not yet certain. The development of new drugs whi...
Effects of treatment on airway microvascular leakage
BOSCHETTO, Piera;
1990
Abstract
Microvascular leakage, an essential component of inflammation, probably plays a critical role in asthma in producing plasma exudation and thickening of the bronchial mucosa which may underlie airway hyperresponsiveness. Several therapeutic approaches are possible to reduce this leakage, by blocking either the effects or the release of inflammatory mediators which induce the leakage. Drugs with these actions might be too specific to be of therapeutic value if many mediators are involved, as seems increasingly likely. Reduction of blood flow using selective vasoconstrictors is a more attractive approach and α1-adrenoceptor agonists may be of value. Drugs that act directly on endothelial cells are probably the most useful, since they would be effective irrespective of the mechanism of leakage. Corticosteroids probably have this property, but whether β-agonists or theophylline are clinically effective against airway microvascular leakage is not yet certain. The development of new drugs whi...I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
