We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov Menu

Montelukast and Nasal Epithelial Cell Inflammatory Responses in Asthma and Rhinitis

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified October 2010 by University of Aberdeen.
Recruitment status was:  Not yet recruiting
ClinicalTrials.gov Identifier:
First Posted: October 29, 2010
Last Update Posted: October 12, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Merck Sharp & Dohme Corp.
Information provided by:
University of Aberdeen
October 27, 2010
October 29, 2010
October 12, 2017
January 2011
December 2011   (Final data collection date for primary outcome measure)
Effect of montelukast on nasal epithelial cell secretion in vitro. [ Time Frame: 12 months ]
  • Nasal AEC will be cultured from 20 patients with asthma and 20 patients with asthma and concomitant allergic rhinitis.
  • Unstimulated, TNFα (a surrogate for viral infection, a well known trigger of exacerbations) or allergen stimulated secretion of IL-6, IL-10, INFgamma TGFbeta, GM-CSF, eotaxin 1 & 2, RANTES and IL-8 by NEC will be measured. The in vitro inhibitory effects of a concentration range (10-6M to 10-10M) of montelukast will be assessed.
Same as current
No Changes Posted
Effect of 1-week montelukast withdrawal on clinical scores and pro-inflammatory cytokine output by nasal epithelial cells [ Time Frame: 12 months ]
  • The secondary outcome of the study will be to examine the effect of withdrawal montelukast for 1-week on clinical scores and pro-inflammatory cytokine/ chemokine secretion by cultured NEC in montelukast-responsive patients with asthma (20 subjects) and asthma/AR (20 subjects).
  • The clinical scores and NEC secretory responses in these patients following montelukast withdrawal will be compared with the responses generated in the primary study i.e., while taking montelukast.
Same as current
Not Provided
Not Provided
Montelukast and Nasal Epithelial Cell Inflammatory Responses in Asthma and Rhinitis
The Effect of Montelukast on Inflammatory Responses of Nasal Epithelial Cells Cultured From Patients With Asthma, With and Without Concomitant Allergic Rhinitis
The airways of the lung are lined by specialised cells called airway epithelial cells. As well as being at the interface between the lungs and the air we breathe; airway epithelial cell (AEC) function is altered in people with respiratory diseases such as asthma. AEC secrete many mediators that contribute to asthma symptoms and these also contribute to asthmatic inflammation in the lungs. The study of such cells is difficult because of their location deep in the lungs. Nasal airway epithelial cells provide a useful and easily accessible model of model of lower airway cells. This study will examine whether the asthma medication Singulair (montelukast) can inhibit the inflammatory secretions of nasal AEC of asthmatic patents who also have allergic rhinitis compared with patients who have asthma alone. We will also examine if montelukast has differential modulating effects in these two patient groups.


The inflammatory secretory profile of nasal airway epithelial cells (NEC) cultured from asthmatics with concomitant allergic rhinitis (AR) will differ from that of NEC from patients with asthma alone. Treatment (in vitro and in vivo) with montelukast may have differential modulating effects in these two patient groups.

For the primary objective of this proposal we will use nasal AEC from asthmatics with or without concomitant AR as to ascertain differences in pro-inflammatory cytokine and chemokine production between these two groups and determine whether in vitro treatment with montelukast has a differential modulating effect on NEC secretion. In the secondary pilot study any modulating effects by montelukast on AEC secretion in vitro will be correlated with any in vivo response to montelukast withdrawal. This sub study will provide pilot data indicating whether in vivo response to montelukast can be predicted from in vitro effects on NEC.

Time Perspective: Prospective
Not Provided
Not Provided
Non-Probability Sample
For the primary study the investigators will identify 40 patients (aged 10-60) with with stable physician confirmed mild/moderate asthma (Steps 1-4 of BTS/SIGN guidelines [3]) with <10 pack-year smoking histories. Twenty of the subjects will have asthma and concomitant allergic rhinitis (asthma/AR) and 20 will have asthma alone.
  • Asthma
  • Allergic Rhinitis
Not Provided
asthmatic patients taking montelukast
asthma with or without rhinitis
McDougall CM, Blaylock MG, Douglas JG, Brooker RJ, Helms PJ, Walsh GM. Nasal epithelial cells as surrogates for bronchial epithelial cells in airway inflammation studies. Am J Respir Cell Mol Biol. 2008 Nov;39(5):560-8. doi: 10.1165/rcmb.2007-0325OC. Epub 2008 May 15.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
Unknown status
December 2011
December 2011   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • stable physician confirmed mild/moderate asthma (Steps 1-4 of BTS/SIGN guidelines <10 pack-year smoking histories Currently taking montelukast with a documented clinical history of benefit

Exclusion Criteria:

  • Nasal corticosteroid therapy
Sexes Eligible for Study: All
10 Years to 60 Years   (Child, Adult)
Contact information is only displayed when the study is recruiting subjects
United Kingdom
MT091 RGD 1265 ( Other Identifier: University of Aberdeen )
Not Provided
Not Provided
Dr Garry Walsh, University of Aberdeen
University of Aberdeen
Merck Sharp & Dohme Corp.
Principal Investigator: Garry M Walsh, PhD University of Aberdeen
University of Aberdeen
October 2010