A widely used drug that suppresses cellular immunity inhibits prostaglandin and leukotriene synthesis and increases the catabolism of IgG antibody is :

Glucocorticoids are powerful immunosuppressants. These inhibit both cellular and humoral immunity by: Decreasing the recruitment of immune cells. Catabolism of immunoglobulins. Inhibiting the enzyme phospholipase A2 resulting in decreased production of PGs, LTs and TXs.