Study of Efficacy of Carbamazepine in Therapy of Patients With Moderate Persistent and Severe Bronchial Asthma

NCT ID: NCT00153296

Last Updated: 2009-02-19

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE4
• Total Enrollment: 68 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2004-08-31
• Study Completion Date: 2005-04-30

Brief Summary

The purpose of this study was to determine whether antiepileptic drug carbamazepine is effective in the treatment of chronic moderate persistent and severe asthma.

Detailed Description

Effective therapy of asthma still remains quite serious problem. According GINA definition, asthma is an inflammatory disorder. Consequently, modern pharmacotherapy of asthma provides wide use of anti-inflammatory drugs. But asthma also is a paroxysmal disorder: many specialists and even some guidelines underline paroxysmal clinical picture of asthma. Besides this, according to some authors, neurogenic inflammation may play important role in asthma mechanism. But some other neurogenic inflammatory paroxysmal disorders exist, and they are migraine and trigeminal neuralgia. Some antiepileptic drugs, like carbamazepine and valproate, are very effective in therapy of migraine and trigeminal neuralgia - more than in 80% of cases. If bronchial asthma also is paroxysmal inflammatory disease, like migraine and trigeminal neuralgia, it is possible that some antiepileptic drugs also are very effective in asthma therapy.

We performed a double-blind, placebo-controlled 3-month trial for evaluation of carbamazepine efficacy in therapy of bronchial asthma. Carbamazepine is a well-known, comparatively safe and effective antiepileptic drug.

Comparison: Patients received investigational drug in addition to their usual routine antiasthmatic treatment, compared to patients received placebo in addition to their usual routine antiasthmatic treatment.

Conditions

Bronchial Asthma

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Interventions

Carbamazepine

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Patients must have given their informed consent before commencing the procedures specified in the protocol, indicating that they understand the objectives of the study and are willing to adhere to the procedures described in the protocol.
• Males or females.
• Patient aged between 16 and 65 years.
• Out patients.
• Non smokers or ex-smokers, having stopped smoking > 1 year.
• Moderate persistent or severe asthma, according GINA classification
• Patients with an established (i.e. at least one year) clinical history of asthma.
• Absence of long-term remissions of asthma (lasting more than 1 month)
• Poorly controlled asthma, due to various reasons.
• Patients with a FEV1 reversibility of at least 12% from initial level after 400 mcg salbutamol inhalation (4 puffs of salbutamol MDI, 100 mcg per puff). Patients whose FEV1 reversibility was 12% within the past 12 months are acceptable, providing that the records are available to the investigator.
• Patients able to swallow capsules, able to understand and complete diary cards and to record their PEFR using a peak-flow meter.

Exclusion Criteria

• Long-term history of smoking (3 years and more)
• History or presence of cardiovascular, renal, neurologic, psychiatric, liver, immunologic, endocrine, infection or other diseases or dysfunctions if they are clinically significant. A clinically significant disease is defined as one which in the opinion of the investigator may either put the patient at risk because of participation in the study or a disease which may influence the results of the study or the patient's ability to participate in the study.
• Patients with a recent history (< 1 year) of myocardial infarction and/or (< 3 years) of heart failure or patients with any cardiac arrhythmia requiring drug therapy.
• History of cancer within the past 5 years.
• Patients with active tuberculosis with indication for treatment.
• Patients with a history of cystic fibrosis, bronchiectasis, chronic bronchitis or emphysema.
• Patients with clinically significant abnormal baseline haematology, blood chemistry or urinalysis or if the abnormal defines a disease listed as an exclusion criterion.
• Patients with known allergy, side effects, intolerance/hypersensitivity to investigational drug
• Patients currently using MAO inhibitors, tricyclic antidepressants, antiepileptic drugs, narcotic agents.
• Pregnant or nursing women and sexually active women with childbearing potential not using a medically approved method of contraception.
• Patients unlikely, unable or unwilling to comply with the requirements of the protocol.

• Minimum Eligible Age: 16 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Rea Rehabilitation Centre, Georgia

OTHER

Sponsor Role: collaborator

Centre of Chinese Medicine, Georgia

OTHER

Sponsor Role: lead

Principal Investigators

Merab Lomia, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

"Rea" Rehabilitation Centre

Tamuna Tchelidze, MD

Role: STUDY_DIRECTOR

CRO Evidence

Manana Tchaia, MD

Role: STUDY_CHAIR

Centre of Chinese Medicine

References

Lomia M, Tchelidze T, Pruidze M. Bronchial asthma as neurogenic paroxysmal inflammatory disease: a randomized trial with carbamazepine. Respir Med. 2006 Nov;100(11):1988-96. doi: 10.1016/j.rmed.2006.02.018. Epub 2006 Apr 4.

Reference Type: RESULT

PMID: 16597501 (View on PubMed)

Related Links

http://www.asthma.ge

Website of Neuroasthma Group

http://www.ncbi.nlm.nih.gov/pubmed/16597501?ordinalpos=2&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum

Bronchial asthma as neurogenic paroxysmal inflammatory disease: a randomized trial with carbamazepine

Other Identifiers

LTP-1004-CZ-0405

Identifier Type: -

Identifier Source: org_study_id