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  • Title: Metabolic fate of 3,4-dihydroxyphenylethyleneglycol (DHPG) in mouse brain.
    Author: Li PP, Warsh JJ, Godse DD.
    Journal: Prog Neuropsychopharmacol Biol Psychiatry; 1983; 7(4-6):751-4. PubMed ID: 6686705.
    Abstract:
    Mouse brain DHPG and MHPG turnover rates were estimated by determining their initial rates of disappearance or accumulation following MAO and/or COMT inhibition. Similar turnover estimates of brain DHPG were obtained following MAO or COMT inhibition, which were comparable to the estimated NE turnover obtained from its initial accumulation following MAO plus COMT inhibition. It was estimated that negligible amounts of DHPG were eliminated directly from brain, the majority being cleared through O-methylation. These findings indicate that mouse brain NE is primarily cleared through DHPG formation followed by O-methylation, and also suggest that brain DHPG turnover is more indicative of NE turnover.
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