A glucocorticoid given, as the free alcohol or in esterified form, orally, intramuscularly, by local injection, by inhalation, or applied topically in the management of various disorders in which corticosteroids are indicated. This compound belongs to the class of organic compounds known as 21-hydroxysteroids. These are steroids carrying a hydroxyl group at the 21-position of the steroid backbone.
- Pharmacodynamics: – Triamcinolone and its derivatives are synthetic glucocorticoids that are used for their antiinflammatory or immunosuppressive properties. The antiinflammatory actions of corticosteroids are thought to involve lipocortins, phospholipase A2 inhibitory proteins which, through inhibition of arachidonic acid, control the biosynthesis of prostaglandins and leukotrienes. Firstly, however, these glucocorticoids bind to the glucocorticoid receptors which translocate into the nucleus and bind DNA (GRE) and change genetic expression both positively and negatively. The immune system is suppressed by corticosteroids due to a decrease in the function of the lymphatic system, a reduction in immunoglobulin and complement concentrations, the precipitation of lymphocytopenia, and interference with antigen-antibody binding.
- Pharmacokinetics: –
- Absorption: – Rapid absorption following oral administration.
- Protein Binding: – 68%
- Metabolism :– Hepatic
- Half-Life: -88 minutes
- For the treatment of perennial and seasonal allergic rhinitis.