Ethacrynic acid,a diuretic,functions as an inhibitor of L-type voltage-dependent and store-operated calcium channels,facilitating the relaxation of airway smooth muscle (ASM)cells. It exhibits anti-inflammatory effects,notably reducing retinoid-induced ear edema in mice,and inhibits glutathione S-transferases (GSTs),making it a potent suppressor of the NF-kB signaling pathway. Additionally,ethacrynic acid modulates leukotriene formation. A variant,Ethacrynic acid-D5,is distinguished by its deuterium labeling.
Indimilast is used to inhibit phosphodiesterase IV that regulates lung inflammation and causes bronchiectasis by increasing intracellular cyclic adenosine 3', 5'-monophosphate in airway smooth muscle and inflammatory cells. Potential to treat chronic obst