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Effects of alpha-fluoromethylhistidine (FMH), an irreversible inhibitor of histidine decarboxylase, on development of brain histamine and catecholamine systems in the neonatal rat



Effects of alpha-fluoromethylhistidine (FMH), an irreversible inhibitor of histidine decarboxylase, on development of brain histamine and catecholamine systems in the neonatal rat



Life Sciences 32(25): 2897-2903



Daily administration of FMH to neonatal rats produced long-lasting inhibition of histidine decarboxylase in hypothalamus and cerebral cortex and led to depletion of histamine in both brain regions. The onset of depletion was more rapid in cerebral cortex, a region in which non-neurotransmitter pools of histamine predominate in early postnatal life, appearing as early as postnatal day 3; depletion in the hypothalamus, a region rich in histaminergic neuronal projections, appeared later. No effects were seen on body or brain growth, nor was development of other biogenic amine systems affected. FMH thus provides a selective probe for examining the role of histamine in brain development.

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Accession: 042946027

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PMID: 6855476


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