Complementing this slow genomic effect are rapid non-genomic actions, where the drug triggers immediate signaling cascades that contribute to its vasoconstrictive and anti-edematous effects. It inhibits the production of phospholipase A2, thereby reducing the substrate available for the synthesis of prostaglandins and leukotrienes—potent inflammatory agents.
How Prednisone Works Protein Expression at the Molecular Level
This synthetic corticosteroid mimics the natural cortisol produced by the adrenal glands, binding to glucocorticoid receptors within cells to regulate a vast array of inflammatory and immune genes. By interfering with the complex signaling pathways that drive inflammation, prednisone effectively reduces swelling, redness, and pain associated with a wide spectrum of conditions.
This active metabolite then binds with high affinity to the glucocorticoid receptor located in the cytoplasm, causing a conformational change that allows the complex to translocate into the cell nucleus. The receptor-ligand complex acts as a transcription factor, binding to specific DNA sequences called glucocorticoid response elements.
How Prednisone Works Protein Expression: Genomic and Non-Genomic Mechanisms
Impact on the Immune System Prednisone exerts a profound immunosuppressive effect, which is the cornerstone of its utility in autoimmune diseases. Once inside, the inactive drug is metabolized into its active form, prednisolone, by the enzyme 11-beta-hydroxysteroid dehydrogenase type 1.
More About How prednisone works
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