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Dexamethasone – a synthetic glucocorticoid binds more powerfully to the glucocorticoid receptor than cortisol does. Dexamethasone is based on the cortisol structure but differs at three positions (extra double bond in the A-ring between carbons 1 and 2 and addition of a 9-α-fluoro group and a 16-α-methyl substituent).
Methylprednisolone (Depo-Medrol, Medrol, Solu-Medrol) is a synthetic glucocorticoid, primarily prescribed for its anti-inflammatory and immunosuppressive effects. [ 4 ] [ 5 ] [ 6 ] It is either used at low doses for chronic illnesses or used concomitantly at high doses during acute flares.
Dexamethasone is a fluorinated glucocorticoid medication [10] used to treat rheumatic problems, a number of skin diseases, severe allergies, asthma, chronic obstructive pulmonary disease (COPD), croup, brain swelling, eye pain following eye surgery, superior vena cava syndrome (a complication of some forms of cancer), [11] and along with antibiotics in tuberculosis. [10]
Methylprednisolone succinate, sold under the brand name Solu-Medrol among others, is a synthetic glucocorticoid corticosteroid and a corticosteroid ester—specifically the C21 succinate ester of methylprednisolone—which is used by intravenous administration.
Corticosteroids are a class of steroid hormones that are produced in the adrenal cortex of vertebrates, as well as the synthetic analogues of these hormones.Two main classes of corticosteroids, glucocorticoids and mineralocorticoids, are involved in a wide range of physiological processes, including stress response, immune response, and regulation of inflammation, carbohydrate metabolism ...
In pharmacologic (supraphysiologic) doses, glucocorticoids, such as prednisone, dexamethasone, and hydrocortisone are used to suppress various allergic, inflammatory, and autoimmune disorders. They are also administered as posttransplantory immunosuppressants to prevent the acute transplant rejection and graft-versus-host disease .
Most esters of these corticosteroids are not included in this list; for esters, see here instead. The most common structural modifications in synthetic corticosteroids include 1(2)-dehydrogenation, 6α-, 9α-, 16α-, and 16β-substitution (with a halogen or methyl group), 16α,17α-acetonidation, and 17α- and 21-esterification.
Dexamethasone and other corticosteroids are agonists, while mifepristone and ketoconazole are antagonists of the GR. Anabolic steroids also prevent cortisol from binding to the glucocorticoid receptor.