Abstract
N τ-methylhistamine concentrations in plasma and urine were determined using a newly developed simultaneous determination for histamine andN τ-methylhistamine, based on isotope dilution mass fragmentography. Three groups of patients were investigated: patients receiving intravenously-administered iodamide for excretory urography, patients receiving a wasp-sting challenge, and patients treated with an intravenously-administered muscle relaxant. In all patients showing a distinct systemic anaphylactic or anaphylactoid reaction histamine andN τ-methylhistamine concentrations were found to be elevated. From the results of this study it can be concluded thatN τ-methylhistamine in plasma and urine is a good parameter for histamine release, and that the determination of this histamine metabolite are less hampered by possible artefacts (due to basophil disrupture, a very short half-life time or bacterial production) than determinations of histamine itself.
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Keyzer, J.J., Breukelman, H., Wolthers, B.G. et al. Measurement ofN τ-methylhistamine concentrations in plasma and urine as a parameter for histamine release during anaphylactoid reactions. Agents and Actions 16, 76–79 (1985). https://doi.org/10.1007/BF01983105
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DOI: https://doi.org/10.1007/BF01983105