ブデソニド

用途吸入ステロイド薬気道の炎症を抑制し，喘息症状を改善する

説明Budesonide is composed of a 1:1 mixture of epimers of the 16,17-butylacetal, creating a chiral center. The 22R-epimer binds to the GR with higher affinity than does the 22S-epimer (Table 33.5). The butyl acetal chain provided the highest potency for the homologous acetal chains. Its rate of topical uptake into epithelial tissue is more than 100 times faster than that for hydrocortisone and dexamethasone. Approximately 85% of the IV administered dose of budesonide undergoes extensive first-pass hepatic metabolism by CYP3A4 to its primary metabolites, 6β-hydroxybudesonide and 16α-hydroxyprednisolone, which have approximately 1/100 the potency of budesonide. This is an important inactivation step in limiting budesonide's systemic effect on adrenal suppression.

使用Budesonide is a glucocorticoid steroid that activates the glucorcorticoid receptor with an EC50 value of 12.4 nM. Like other glucocorticoids, budesonide reduces inflammation and has utility in inflammatory diseases, like asthma and inflammatory bowel disease. Also like other glucocorticoids, budesonide may be abused by athletes.[Cayman Chemical]

一般的な説明Budesonide (Pulmicort Turbohaler,Rhinocort) is extensively metabolized in the liver, with 85%to 95% of the orally absorbed drug metabolized by the firstpasseffect. The major metabolites are 6β-hydroxybudesonideand 16α-hydroxyprednisolone, both with less than1% of the activity of the parent compound. Metabolism involvesthe CYP3A4 enzyme, so coadministration of budesonidewith a known CYP3A4 inhibitor should be monitoredcarefully.