Antagonism of airway reactivity induced by ovalbumin antigen in guinea pigs by 5-amino-4-imidazolecarboxamide riboside

Dale R. Bergren, Robert G. Townley, Diana L. Marquardt, Harry E. Gruber, Virginia A. Bergren

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of 5-amino-4-imidazolecarboxamide riboside (AICA riboside), a modulator of purine metabolism, was studied on antigen-induced bronchospasm in ovalbumin (OA)-sensitized guinea pigs. In separate experiments, sodium cromoglycate (SCG) and terbutaline were used to compare their effectiveness with that of AICA riboside (wt/vol). AICA riboside and SCG were administered as an aerosol daily for a minimum of 2 weeks before OA aerosol challenge. Terbutaline, as an aerosol, was administered once 5 minutes before OA challenge. Airway reactivity was determined through the use of a whole-body plethysmograph by monitoring specific airway resistance (SRaw. OA aerosol challenge of 0.05%, 0.1%, and 0.25% (wt/vol), administered for a period of 1 minute, increased SRaw. Each of the three agents attenuated the effect of OA. on SRaw, although terbutaline demonstrated more consistency and potency as compared to either AICA riboside or SCG. However, at moderate degrees of OA challenge, AICA riboside appeared to be as effective as either agent. Although the mechanism of action of AICA riboside remains uncertain, it may have therapeutic benefit in the treatment of asthma or allergic diseases.

Original languageEnglish
Pages (from-to)604-612
Number of pages9
JournalJournal of Allergy and Clinical Immunology
Volume88
Issue number4
DOIs
StatePublished - 1991
Externally publishedYes

Fingerprint

Ovalbumin
Guinea Pigs
Aerosols
Antigens
Terbutaline
Cromolyn Sodium
Bronchial Spasm
Airway Resistance
imidazolecarboxamide
Asthma

All Science Journal Classification (ASJC) codes

  • Immunology
  • Immunology and Allergy

Cite this

Antagonism of airway reactivity induced by ovalbumin antigen in guinea pigs by 5-amino-4-imidazolecarboxamide riboside. / Bergren, Dale R.; Townley, Robert G.; Marquardt, Diana L.; Gruber, Harry E.; Bergren, Virginia A.

In: Journal of Allergy and Clinical Immunology, Vol. 88, No. 4, 1991, p. 604-612.

Research output: Contribution to journalArticle

Bergren, Dale R. ; Townley, Robert G. ; Marquardt, Diana L. ; Gruber, Harry E. ; Bergren, Virginia A. / Antagonism of airway reactivity induced by ovalbumin antigen in guinea pigs by 5-amino-4-imidazolecarboxamide riboside. In: Journal of Allergy and Clinical Immunology. 1991 ; Vol. 88, No. 4. pp. 604-612.
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