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.
Carboxyamidotriazole is a cytostatic inhibitor of non-voltage-operated calcium channels and calcium channel-mediated signaling pathways. It shows anti-inflammatory, anti-tumor, and antiangiogenic effects.