Ketotifen prevents terbutaline-induced down-regulation of beta-adrenoceptors in Guinea pig lung

T. Koshino, D. K. Agrawal, T. A. Townley, R. G. Townley

Research output: Contribution to journalArticle

2 Scopus citations


We examined the effect of ketotifen on the down-regulation of beta-adrenoceptors in guinea pig lung chronically treated with terbutaline. There was a significant decrease in the density of beta-adrenoceptors following chronic administration of terbutaline. Ketotifen prevented the decrease in beta-adrenoceptor density induced by terbutaline in a dose-dependent fashion; ketotifen alone, also increased the density of beta-adrenoceptors. However, neither ketotifen nor terbutaline significantly changed the KD values in either group. These findings suggest that ketotifen might be valuable when beta-agonists are administered for long term treatment in asthmatic patients.

Original languageEnglish
Pages (from-to)1221-1227
Number of pages7
JournalBiochemical and Biophysical Research Communications
Issue number3
StatePublished - May 16 1988


All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Biophysics
  • Molecular Biology

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