it is apparent that the most important recent acquisitions in the realm of bronchial mediators , over these last 10 years remains : the demonstration in the animal and in man of the duality between adrenergic bronchoconstriction of alpha nature and adrenergic bronchoconstriction of beta-2 nature , the duality of the effects of prostaglandins ( pgf2 alpha broncho-constrictive , and pge2 bronchodilator ) , and the role of cyclic amp at the junction of the action of numerous substances which are active on the bronchial musculature .
C0033554
prostaglandins
C0012472
pge2