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Study to Investigate the Effect of Inhaled Tiotropium Bromide on Neurokinin-A Induced Bronchoconstriction in Patients With Mild-to-moderate Asthma

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00557700
First Posted: November 14, 2007
Last Update Posted: June 16, 2010
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.
Collaborator:
Boehringer Ingelheim
Information provided by:
University Hospital, Ghent
  Purpose
This trial compares the outcome of treatment of mild to moderate asthma: inhaled tiotropium bromide versus placebo.

Condition Intervention Phase
Asthma Drug: Administration of inhaled tiotropium bromide Drug: Administration of placebo Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Study to Investigate the Effect of Inhaled Tiotropium Bromide on Neurokinin-A Induced Bronchoconstriction in Patients With Mild-to-moderate Asthma

Resource links provided by NLM:


Further study details as provided by University Hospital, Ghent:

Primary Outcome Measures:
  • The mean change in the provocative concentration of neurokinin-A (NKA) causing a 20% fall in the forced expiratory volume in one second (PC20NKA), as a measure of indirect airway hyperresponsiveness [ Time Frame: After 20 days ]

Secondary Outcome Measures:
  • The change in the one-second-value in the forced vital capacity [ Time Frame: After 20 days ]
  • The mean change in PC20 of methacholine, as a measure of direct airway hyperresponsiveness [ Time Frame: After 20 days ]

Estimated Enrollment: 15
Study Start Date: January 2008
Study Completion Date: May 2010
Primary Completion Date: May 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: 2
Administration of placebo
Drug: Administration of placebo
Administration of placebo
Experimental: 1
Administration of inhaled tiotropium bromide
Drug: Administration of inhaled tiotropium bromide
Administration of inhaled tiotropium bromide

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Informed consent
  • Male or female, at least 18 years old
  • Documented medical history of asthma (diagnosis at least 6 months ago)
  • Non-smoker or at least stopped for 1 year (in case smoked earlier: maximum of 10 pack-years)
  • Able to conduct a technically acceptable spirometry, methacholine and neurokinin-A provocation test.
  • At visit 1: PC20 methacholine ≤ 8 mg/ml AND ≤ 3.3x10-7 mol/ml for the neurokinin-A provocation test.
  • At visit 1: forced expiratory value in one second >= 80% of the predicted value.
  • Female subjects may not get pregnant and should be using adequate contraception.

Exclusion Criteria:

  • Airway infection within 6 weeks prior to first study visit.
  • Other respiratory diseases (eg COPD, lung cancer, etc.)
  • Participating in another clinical trial.
  • Clinically relevant systemic diseases, other than asthma.
  • Clinically significant laboratory deviations.
  • Alcohol or drug abuse.
  • Female subjects who are lactating.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00557700


Locations
Belgium
University Hospital Ghent
Ghent, Belgium, 9000
CHU Sart Tilman ULG
Liège, Belgium, 4000
Sponsors and Collaborators
University Hospital, Ghent
Boehringer Ingelheim
Investigators
Principal Investigator: Guy Joos, MD, PhD University Hospital, Ghent
  More Information

Additional Information:
Responsible Party: Guy Joos, MD, PhD, University Ghent
ClinicalTrials.gov Identifier: NCT00557700     History of Changes
Other Study ID Numbers: 2007/378
First Submitted: November 12, 2007
First Posted: November 14, 2007
Last Update Posted: June 16, 2010
Last Verified: June 2010

Keywords provided by University Hospital, Ghent:
Mild to moderate asthma

Additional relevant MeSH terms:
Asthma
Bronchial Diseases
Respiratory Tract Diseases
Lung Diseases, Obstructive
Lung Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Hypersensitivity
Immune System Diseases
Tiotropium Bromide
Neurokinin A
Substance P
Bromides
Bronchodilator Agents
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Asthmatic Agents
Respiratory System Agents
Parasympatholytics
Cholinergic Antagonists
Cholinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Anticonvulsants