Repeated inhalation challenge with exogenous and endogenous histamine released by acetaldehyde inhalation in asthmatic patients

American Journal of Respiratory and Critical Care Medicine
S MyouT Matsuda

Abstract

We previously reported that inhaled acetaldehyde, a metabolite of ethanol and a main factor in alcohol-induced asthma, causes bronchoconstriction indirectly through endogenously released histamine in asthmatic subjects. No study has examined the difference between tachyphylaxis in response to endogenous as opposed to exogenous histamine. Therefore, we examined tachyphylaxis occurring in response to repeated inhalation of histamine or acetaldehyde in nine asthmatic subjects. The mean acetaldehyde concentration causing a 20% decrease in FEV1 increased significantly from 18.4 (geometric standard error of the mean (GSEM = 0.14) to 45.2 (GSEM = 0.14) mg/ml over a period of 1 h (p < 0.002), whereas the mean histamine concentrations causing a 20% decrease in FEV1 were identical. No correlations were observed between the change in bronchial responsiveness to each solution and the change in baseline FEV1. These results suggest that tachyphylaxis in response to histamine is observed only when the latter is released endogenously. We believe that this is the first report suggesting tachyphylaxis caused by endogenous histamine.

Citations

May 26, 1999·Respirology : Official Journal of the Asian Pacific Society of Respirology·M FujimuraT Matsuda
Jun 8, 2001·Alcoholism, Clinical and Experimental Research·C J Eriksson
May 1, 2009·Journal of Translational Medicine·Hye-Won ShinDan M Cooper
Feb 6, 2004·The Journal of Pharmacology and Experimental Therapeutics·Marcello TrevisaniSelena Harrison
Jun 19, 2004·Inhalation Toxicology·Robert TardifMark Raizenne

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