Fludrocortisone acetate

Glucocorticoid Receptor|||Autophagy

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Fludrocortisone acetate (9α-Fludrocortisone acetate), a glucocorticoid-receptor agonist, binds to cytoplasmic receptors, translocates to the nucleus, and initiates transcription of glucocorticoid-responsive genes like lipocortins to inhibit phospholipase A2 (PLA2). As the acetate salt of a synthetic fluorinated corticosteroid, it exhibits anti-inflammatory and antiallergic activities. PLA2 inhibition prevents arachidonic acid release, a precursor of eicosanoids such as prostaglandins and leukotrienes, which are key mediators in the pro-inflammatory response. As a mineralocorticoid-receptor agonist, it stimulates Na+ reabsorption, water retention, and K+ and H+ secretion in the distal tubules and collecting ducts of the kidney.