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Aldosterone synthase, also called steroid 18-hydroxylase, corticosterone 18-monooxygenase or P450C18, is a steroid hydroxylase cytochrome P450 enzyme involved in the biosynthesis of the mineralocorticoid aldosterone and other steroids. The enzyme catalyzes sequential hydroxylations of the steroid angular methyl group at C18 after initial 11β ...
Glucocorticoid remediable aldosteronism. Glucocorticoid remediable aldosteronism also describable as aldosterone synthase hyperactivity, is an autosomal dominant disorder in which the increase in aldosterone secretion produced by ACTH is no longer transient. It is a cause of primary hyperaldosteronism.
Endocrinology. Familial hyperaldosteronism is a group of inherited conditions in which the adrenal glands, which are small glands located on top of each kidney, produce too much of the hormone aldosterone. [1] Excess aldosterone causes the kidneys to retain more salt than normal, which in turn increases the body's fluid levels and causes high ...
Steroidogenic enzymes are enzymes that are involved in steroidogenesis and steroid biosynthesis. [2][3][4][5] They are responsible for the biosynthesis of the steroid hormones, including sex steroids (androgens, estrogens, and progestogens) and corticosteroids (glucocorticoids and mineralocorticoids), as well as neurosteroids, from cholesterol ...
In aldosterone-producing adrenocortical adenoma (APA), which is the main cause of primary aldosteronism, the enzyme aldosterone synthase (CYP11B2) plays a crucial role in aldosterone production. Somatic mutations in genes like KCNJ5 and CACNA1D can lead to an overexpression of CYP11B2 and increased production of aldosterone.
Aldosterone is the primary of several endogenous members of the class of mineralocorticoids in humans. [citation needed] Deoxycorticosterone is another important member of this class. Aldosterone tends to promote Na + and water retention, and lower plasma K + concentration by the following mechanisms:
10% of people with high blood pressure [ 1 ] Primary aldosteronism (PA), also known as primary hyperaldosteronism, refers to the excess production of the hormone aldosterone from the adrenal glands, resulting in low renin levels and high blood pressure. [ 1 ] This abnormality is a paraneoplastic syndrome (i.e. caused by hyperplasia or tumors).
Variants in genes responsible the enzymes required for the synthesis of cortisol in the adrenal cortex. Congenital adrenal hyperplasia (CAH) is a group of autosomal recessive disorders characterized by impaired cortisol synthesis. [1][2] It results from the deficiency of one of the five enzymes required for the synthesis of cortisol in the ...