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J Allergy Clin Immunol. 1995 Jan;95(1 Pt 1):29-33.

Budesonide treatment of moderate and severe asthma in children: a dose-response study.

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1
Department of Paediatrics, Kolding Hospital, Denmark.

Abstract

OBJECTIVE:

The purpose of the study was to evaluate the dose-response relationships of the inhaled corticosteroid budesonide in a double blind crossover study in 19 children with moderate and severe asthma.

METHODS:

A 2-week placebo treatment period (run-in) was followed by three 4-week treatment periods during which 100, 200, and 400 micrograms of budesonide were given per day in randomized order. Urinary cortisol excretion, lung functions, and protection against exercise-induced asthma were assessed at the end of run-in and each treatment period. Furthermore, morning and evening peak expiratory flow rates, day and night symptoms, and use of rescue beta 2-agonists were recorded throughout the study.

RESULTS:

One hundred micrograms of budesonide per day markedly improved symptoms, morning and evening peak expiratory flow rates, and use of rescue beta 2-agonists (p < 0.01). No further improvement was seen in these parameters with increasing doses of budesonide. In contrast, a significant dose-response effect was found on lung functions measured at the hospital and fall in lung functions after exercise (p < 0.001); 200 micrograms was significantly better than 100 micrograms, and 400 micrograms was significantly better than 200 micrograms. About 53% of the maximum effect against exercise-induced asthma was achieved by the lowest budesonide dose (p < 0.001), and about 83% by the highest dose. No significant differences were seen in urinary cortisol excretion between run-in and the various budesonide doses.

CONCLUSIONS:

Low doses of budesonide, which are not associated with any systemic side effects, have a marked antiasthma effect in children. Protection against exercise-induced asthma requires higher doses than achievement of symptom control.

PMID:
7822661
[Indexed for MEDLINE]

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