Search results
Results From The WOW.Com Content Network
This is a list of antiandrogens, [1] or drugs that prevent the effects of androgens like testosterone and dihydrotestosterone (DHT). [2] It includes direct antagonists of the androgen receptor (AR), androgen synthesis inhibitors like 5α-reductase inhibitors and CYP17A1 inhibitors, and antigonadotropins like GnRH analogues, estrogens, and ...
[173] [174] In men, a study found that treatment with a relatively low dosage of 20 μg/day ethinylestradiol for 5 weeks increased circulating SHBG levels by 150% and, due to the accompanying decrease free testosterone levels, increased total circulating levels of testosterone by 50% (via reduced negative feedback by androgens on the HPG axis).
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 .
Spironolactone is used in the treatment of hyperaldosteronism (high aldosterone levels or mineralocorticoid excess), for instance primary aldosteronism (Conn's syndrome). [47] Antimineralocorticoids like spironolactone and eplerenone are first-line treatments for hyperaldosteronism. [47]
[6] [7] It decreases circulating DHT levels by up to about 70%. [8] Dutasteride (brand name Avodart) inhibits all three 5α-reductase isoenzymes and can decrease DHT levels by 95%. [9] [10] It can also reduce DHT levels in the prostate by 97 to 99% in men with prostate cancer.
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.
However, some studies have observed increased cortisol levels with spironolactone treatment, [130] [131] possibly because of the antimineralocorticoid activity of spironolactone, which prevents negative feedback of mineralocorticoids like aldosterone on the hypothalamic–pituitary–adrenal axis (HPA axis), and thereby upregulates ...
When the three drugs are taken together, the risk of developing renal failure is significantly increased. [22] High blood potassium is another possible complication of treatment with an ACE inhibitor due to its effect on aldosterone. Suppression of angiotensin II leads to a decrease in aldosterone levels.