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l-DOPA, also known as l-3,4-dihydroxyphenylalanine and used medically as levodopa, is made and used as part of the normal biology of some plants [2] and animals, including humans. Humans, as well as a portion of the other animals that utilize l -DOPA, make it via biosynthesis from the amino acid l -tyrosine .
Levodopa, also known as L-DOPA and sold under many brand names, is a dopaminergic medication which is used in the treatment of Parkinson's disease and certain other conditions like dopamine-responsive dystonia and restless legs syndrome. [3]
DopAmide, or L-DopAmide, is a synthetic levodopa (L-DOPA) analogue that can serve as a levodopa and dopamine prodrug and is of potential interest in the treatment of Parkinson's disease. [ 1 ] [ 2 ] [ 3 ] DopAmide has an amide rather than the carboxyl group of L -DOPA, [ 2 ] [ 3 ] which imparts greater water solubility .
Its metabolic precursor L-DOPA can be manufactured; Levodopa, a pure form of L-DOPA, is the most widely used treatment for Parkinson's. There is evidence that schizophrenia involves altered levels of dopamine activity, and most antipsychotic drugs used to treat this are dopamine antagonists which reduce dopamine activity. [ 10 ]
The formation of L-DOPA from L-tyrosine is catalyzed by the enzyme tyrosine hydroxylase. The third stage is the formation of dopamine by removing the carboxylic acid group from L-DOPA, catalysed by the enzyme dopa decarboxylase. [31] Levodopa is also too polar to cross the blood brain barrier but it is an amino acid and has a specialized ...
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Levodopa (or L-DOPA) has been the most widely used treatment for over 30 years. [3] L-DOPA is transformed into dopamine in the dopaminergic neurons by dopa-decarboxylase. [3] Since motor symptoms are produced by a lack of dopamine in the substantia nigra, the administration of L-DOPA temporarily diminishes the motor symptoms. [3]
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