Gene MAO-B

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Also known as

monoamine oxidase B, MAOB, amine oxidase flavin-containing B

Overview

MAO-B (Monoamine Oxidase B) encodes a mitochondrial enzyme that preferentially degrades phenylethylamine and dopamine, with lower activity toward serotonin and norepinephrine compared to MAO-A. MAO-B is the predominant form in the brain, particularly in glial cells, and its activity increases with age. This enzyme is a therapeutic target in Parkinson's disease.

MAO-B inhibitors like selegiline and rasagiline are used to treat Parkinson's disease by preventing dopamine breakdown and providing neuroprotection. Genetic variants affecting MAO-B activity may influence susceptibility to Parkinson's disease and response to treatment. The enzyme also metabolizes neurotoxins like MPTP that can cause parkinsonism.

Understanding your MAO-B genetic status provides insights into dopamine metabolism and neurological health. This information is relevant for understanding Parkinson's disease risk and may inform treatment decisions for dopamine-related disorders. Like MAO-A, MAO-B is located on the X chromosome.

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