Histamine H<inf>2</inf>-receptor mediated activation of neonatal rat brain ornithine decarboxylase in vivo

Jose Rodriguez, Alfonso Toledo, Regina Brandner, Ricardo Rodriguez, Josefa Sabria, Isaac Blanco

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8 Citations (Scopus)

Abstract

The effect of histamine (HA) administered via intracerebroventricular injection on ornithine decarboxylase (ODC) activity was studied in neonatal rat brain. The HA effect was dose and time dependent. Maximal increase in ODC activity was achieved 2 hr after administration of 10 μg HA (38% over control levels). Impromidine (HA H2-agonist) mimicked the effect of HA on ODC and ranitidine (HA H2-antagonist) inhibited the response to HA. Neither 2-thiazolylethylamine (HA H1-agonist) nor mepyramine (HA H1-antagonist) modified control ODC activity. The HA-releasers, compound 48/80 and polymixin B sulfate, elicited an increase in brain ODC activity of 35% and 32%, respectively, over the control value. © 1988.
Original languageEnglish
Pages (from-to)551-554
JournalBiochemical Pharmacology
Volume37
DOIs
Publication statusPublished - 1 Feb 1988

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