Implication of dipeptidylpeptidase IV activity in human bronchial inflammation and in bronchoconstriction evaluated in anesthetized rabbits

B. N. Landis, E. Grouzmann, M. Monod, N. Busso, F. Peták, A. Spiliopoulos, J. H. Robert, I. Szalay-Quinodoz, D. R. Morel, J. S. Lacroix

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Background: Decreased dipeptidylpeptidase IV (DPPIV) activity within the human nasal mucosa has previously been shown to contribute to the severity of chronic inflammatory rhinosinusitis. Objective: To investigate and correlate the role of DPPIV activity with regard to bronchial inflammation. Methods: DPPIV/CD26 activity/concentration was investigated in the bronchial tissue of human subjects suffering from chronic bronchial inflammation. In addition, the effect of a recombinant Aspergillus fumigatus DPPIV (fuDPPIV) was investigated on histamine-induced bronchoconstriction in anesthetized rabbits. Results and Conclusions: DPPIV/CD26 was present in submucosal seromucous glands, in leukocytes and to a very low degree in endothelial cells of human bronchi. DPPIV activity was correlated with tissue CD26 content measured by immunoassay. As previously reported for the nasal mucosa, DPPIV/CD26 activity was inversely correlated with the degree of airway inflammation. Systemic pretreatment with recombinant fuDPPIV markedly reduced the increase in histamine-induced airway resistance in rabbits. In conclusion, DPPIV activity modulates lower airway tone by degrading unknown peptidic substrates released by histamine in response to an allergen. Contrasting with our observations in the nose, this modulation is apparently not mediated via a neurokinin (NK1) receptor.

Original languageEnglish
Pages (from-to)89-97
Number of pages9
JournalRespiration
Volume75
Issue number1
DOIs
Publication statusPublished - Jan 2008

Fingerprint

Bronchoconstriction
Human Activities
Histamine
Nasal Mucosa
Rabbits
Inflammation
Orosomucoid
Airway Resistance
Aspergillus fumigatus
Bronchi
Nose
Immunoassay
Allergens
Leukocytes
Endothelial Cells

Keywords

  • Bronchial mucosa
  • Bronchoconstriction
  • Dipeptidylpeptidase IV
  • Histamine
  • Inflammation
  • Nasal mucosa
  • Upper and lower airways

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Physiology

Cite this

Implication of dipeptidylpeptidase IV activity in human bronchial inflammation and in bronchoconstriction evaluated in anesthetized rabbits. / Landis, B. N.; Grouzmann, E.; Monod, M.; Busso, N.; Peták, F.; Spiliopoulos, A.; Robert, J. H.; Szalay-Quinodoz, I.; Morel, D. R.; Lacroix, J. S.

In: Respiration, Vol. 75, No. 1, 01.2008, p. 89-97.

Research output: Contribution to journalArticle

Landis, BN, Grouzmann, E, Monod, M, Busso, N, Peták, F, Spiliopoulos, A, Robert, JH, Szalay-Quinodoz, I, Morel, DR & Lacroix, JS 2008, 'Implication of dipeptidylpeptidase IV activity in human bronchial inflammation and in bronchoconstriction evaluated in anesthetized rabbits', Respiration, vol. 75, no. 1, pp. 89-97. https://doi.org/10.1159/000106267
Landis, B. N. ; Grouzmann, E. ; Monod, M. ; Busso, N. ; Peták, F. ; Spiliopoulos, A. ; Robert, J. H. ; Szalay-Quinodoz, I. ; Morel, D. R. ; Lacroix, J. S. / Implication of dipeptidylpeptidase IV activity in human bronchial inflammation and in bronchoconstriction evaluated in anesthetized rabbits. In: Respiration. 2008 ; Vol. 75, No. 1. pp. 89-97.
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