Dose-ranging study of salmeterol using a novel fluticasone propionate/salmeterol multidose dry powder inhaler in patients with persistent asthma.
Allergy Asthma Proc
; 37(4): 291-301, 2016 Jul.
Article
em En
| MEDLINE
| ID: mdl-27216137
ABSTRACT
BACKGROUND:
New inhalation devices with improved lung delivery may allow the use of lower salmeterol doses for treatment of asthma.OBJECTIVE:
To determine the dose of salmeterol administered from a novel fluticasone propionate/salmeterol (FS) inhalation-driven, multidose dry powder inhaler (MDPI), which provides comparable efficacy and safety to FS dry powder inhaler (DPI).METHODS:
This double-blind, six-period crossover, dose-ranging study randomized 72 patients (ages ≥12 years; with persistent asthma and predose maximum forced expiratory volume in 1 second [FEV1] of 40-85% of the predicted normal) to treatment sequences (one dose per treatment), which consisted of FS MDPI 100/6.25, 100/12.5, 100/25, 100/50 µg; fluticasone propionate (Fp) MDPI 100 µg; and open-label FS DPI 100/50 µg. The primary efficacy variable was the baseline-adjusted FEV1 area under the curve over 12 hours after the dose (AUC0-12). Pharmacokinetics and tolerability were also assessed.RESULTS:
FEV1 AUC0-12 was significantly higher with all FS MDPI doses and FS DPI versus Fp MDPI (p < 0.0001), and with FS MDPI 100/50 µg versus FS DPI (least squares [LS] mean, 57.88 mL; p = 0.0017). FEV1 AUC0-12 trended toward higher efficacy with FS MDPI 100/25 µg (LS mean, 34.14 mL; p = 0.0624) and was comparable with FS MDPI 100/12.5 µg (LS mean, 3.42 mL; p = 0.8503) versus FS DPI. Salmeterol area under the plasma concentration-versus-time curve from time 0 to the time of the last measurable concentration (AUC0-t) for FS MDPI 100/12.5 µg and 100/25 µg was lower versus FS DPI 100/50 µg; AUC0-t for FS MDPI 100/50 µg was higher than FS DPI 100/50 µg. All FS MDPI doses were generally well tolerated.CONCLUSION:
All FS MDPI doses produced greater efficacy versus Fp MDPI. FS MDPI 100/12.5 µg demonstrated similar efficacy to FS DPI 100/50 µg with less salmeterol exposure. Clinicaltrials.gov NCT02139644, NCT02175771, and NCT02141854.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Asma
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Broncodilatadores
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Inaladores Dosimetrados
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Inaladores de Pó Seco
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Combinação Fluticasona-Salmeterol
Tipo de estudo:
Clinical_trials
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Diagnostic_studies
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Prognostic_studies
Limite:
Adolescent
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Adult
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Aged
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Aged80
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Child
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article