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In addition, due to their blockade of certain serotonin receptors, serotonergic neurotransmission is not facilitated in unwanted areas, which prevents the incidence of many side effects often associated with selective serotonin reuptake inhibitor (SSRI) antidepressants; [1] [3] hence, in part, the "specific serotonergic" label of NaSSAs. [2]
Monoamine oxidases (MAO) (EC 1.4.3.4) are a family of enzymes that catalyze the oxidation of monoamines, employing oxygen to clip off their amine group. [1] [2] They are found bound to the outer membrane of mitochondria in most cell types of the body.
Monoamine oxidase inhibitors (MAOIs) are a class of drugs that inhibit the activity of one or both monoamine oxidase enzymes: monoamine oxidase A (MAO-A) and monoamine oxidase B (MAO-B). They are best known as effective antidepressants , especially for treatment-resistant depression and atypical depression . [ 1 ]
The pharmacology of antidepressants is not entirely clear.. The earliest and probably most widely accepted scientific theory of antidepressant action is the monoamine hypothesis (which can be traced back to the 1950s), which states that depression is due to an imbalance (most often a deficiency) of the monoamine neurotransmitters (namely serotonin, norepinephrine and dopamine). [1]
Tranylcypromine may have neuroprotective properties applicable to the treatment of Parkinson's disease, similar to the MAO-B inhibitors selegiline and rasagiline. [ 38 ] [ 11 ] As of 2017, only one clinical trial in Parkinsonian patients has been conducted, which found some improvement initially and only slight worsening of symptoms after a 1.5 ...
MAO-A produces an amine oxidase, which is a class of enzyme known to affect carcinogenesis. Clorgyline, an MAO-A enzyme inhibitor, prevents apoptosis in melanoma cells, in vitro. [18] Cholangiocarcinoma suppresses MAO-A expression, and those patients with higher MAO-A expression had less adjacent organ invasion and better prognosis and survival ...
Soon after its development, iproniazid and related substances were shown to slow enzymatic breakdown of serotonin, dopamine, and norepinephrine via inhibition of the enzyme monoamine oxidase. For this reason, this class of drugs became known as monoamine oxidase inhibitors, or MAOIs. During this time development of distinctively different ...
Citalopram, sold under the brand name Celexa among others, is an antidepressant of the selective serotonin reuptake inhibitor (SSRI) class. [7] [10] It is used to treat major depressive disorder, obsessive compulsive disorder, panic disorder, and social phobia. [7] The antidepressant effects may take one to four weeks to occur. [7]