Combination preparation containing glucocorticosteroid for topical use (budesonide) and selective beta2-adrenomimetic (salbutamol hemisuccinate).
Budesonide - inhalation glucocorticosteroid, at recommended doses has anti-inflammatory effect (has a lower incidence of side effects than systemic glucocorticosteroids).
The anti-inflammatory effect of budesonide is due to several factors.
1. The drug induces the synthesis of lipocortin, inhibiting the activity of phospholipase A2. Inhibition of phospholipase A mediated2 hydrolysis of membrane phospholipids of damaged tissues prevents the formation of arachidonic acid. The disruption of the formation of arachidonic acid actually means inhibition of the synthesis of prostaglandins, since arachidonic acid is a substrate for further metabolism along the cyclooxygenase pathway, and also along the lipoxygenase pathway, with appropriate inhibition of leukotriene synthesis.
2. The anti-inflammatory effect of the drug is potentiated by its ability to inhibit the expression of COX-2 genes,which also leads to a decrease in the synthesis of prostaglandins in the inflammatory focus, including pro-inflammatory prostaglandins E2 and I2.
3. Budesonide inhibits the expression of molecules of intercellular adhesion in the endothelium of blood vessels, violating the penetration of neutrophils and monocytes into the focus of inflammation.
In addition, the drug inhibits the release of mediators of allergies, and also reduces the hyperreactivity of the smooth muscles of the bronchi.
Salbutamol is a selective stimulant beta2-adrenergic receptors. Provides bronchodilating effect, prevents and stops bronchospasm, reduces resistance in the airways, increases vital capacity of the lungs. Prevents the release of histamine and leukotrienes from mast cells. In therapeutic doses, it practically does not have chronotropic and inotropic effects.