Adrenal cortical steroid synthesis

Catecholamines are produced in chromaffin cells in the medulla of the adrenal gland, from tyrosine , a non-essential amino acid derived from food or produced from phenylalanine in the liver. The enzyme tyrosine hydroxylase converts tyrosine to L-DOPA in the first step of catecholamine synthesis. L-DOPA is then converted to dopamine before it can be turned into noradrenaline. In the cytosol , noradrenaline is converted to epinephrine by the enzyme phenylethanolamine N-methyltransferase (PNMT) and stored in granules. Glucocorticoids produced in the adrenal cortex stimulate the synthesis of catecholamines by increasing the levels of tyrosine hydroxylase and PNMT. [4] [13]

Man made (synthetic) corticosteriods are used to treat a large number of conditions and symptoms. Corticosteriods are used as a replacement therapy when the body is not naturally producing enough of its own of natural corticosteriods. They are also used to treat conditions where there is inflammation, autoimmune conditions or allergy symptoms. Corticosteriod can be taken orally as a systemic treatment to treat the body as a whole or it can be applied to the affected area for a local effect as creams, inhalations, nasal sprays, eye drops, ear drops or injections. Examples of conditions they treat are allergies, asthma, COPD, dermatitis, ulcerative colitis, Crohn’s disease, multiple sclerosis, nephrotic syndrome, adrenal insufficiency, inflammation, Addison’s disease, rheumatic conditions such as arthritis, fibromyalgia and lupus.

Adrenal cortical steroid synthesis

adrenal cortical steroid synthesis

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