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A mineralocorticoid receptor antagonist (MRA or MCRA) [1] or aldosterone antagonist, is a diuretic drug which antagonizes the action of aldosterone at mineralocorticoid receptors. This group of drugs is often used as adjunctive therapy, in combination with other drugs, for the management of chronic heart failure .
It is also a steroid that blocks the effects of the hormones aldosterone and, to a lesser degree, testosterone, causing some estrogen-like effects. [ 24 ] [ unreliable source? ] [ 25 ] [ 26 ] [ unreliable medical source? ] [ 4 ] [ 27 ] Spironolactone belongs to a class of medications known as potassium-sparing diuretics .
Aldosterone receptor antagonists, also known as mineralocorticoid receptor antagonist (MRA) can lower blood pressure by blocking the binding of aldosterone to the mineralocorticoid receptor. Spironolactone and eplerenone are MRAs that causes a block in the reabsorption of sodium, resulting in a decrease in blood pressure.
5α-Reductase inhibitors (5-ARIs), also known as dihydrotestosterone (DHT) blockers, are a class of medications with antiandrogenic effects which are used primarily in the treatment of enlarged prostate and scalp hair loss. They are also sometimes used to treat excess hair growth in women and as a component of hormone therapy for transgender ...
Antiandrogens, also known as androgen antagonists or testosterone blockers, are a class of drugs that prevent androgens like testosterone and dihydrotestosterone (DHT) from mediating their biological effects in the body. They act by blocking the androgen receptor (AR) and/or inhibiting or suppressing androgen production.
Drugs that interfere with the secretion or action of aldosterone are in use as antihypertensives, like lisinopril, which lowers blood pressure by blocking the angiotensin-converting enzyme (ACE), leading to lower aldosterone secretion. The net effect of these drugs is to reduce sodium and water retention but increase the retention of potassium.
Potassium-sparing diuretics or antikaliuretics [1] refer to drugs that cause diuresis without causing potassium loss in the urine. [2] They are typically used as an adjunct in management of hypertension, cirrhosis, and congestive heart failure. [3] The steroidal aldosterone antagonists can also be used for treatment of primary hyperaldosteronism.
[22] The drug controls high blood pressure by blocking the binding of aldosterone to the mineralocorticoid receptor (MR) in epithelial tissues, such as the kidney. [4] Blocking the action of aldosterone decreases blood volume and lowers blood pressure. [23]