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Munich 2014
Sunday, 07.09.2014
New treatments for cough, asthma, COPD and ILDs
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Translational study searching for synergy between glycopyrronium and indacaterol
M. Cazzola, L. Calzetta, A. Segreti, F. Facciolo, P. Rogliani, M. G. Matera (Rome, Naples, Italy)
Source:
International Congress 2014 – New treatments for cough, asthma, COPD and ILDs
Session:
New treatments for cough, asthma, COPD and ILDs
Session type:
Poster Discussion
Number:
1516
Disease area:
Airway diseases
Abstract
Background
QVA149 is a combination of indacaterol and glycopyrronium (Dahl, R. et al. Respir Med 2013;107:1558-67).
Aim
To investigate the interaction of indacaterol and glycopyrroniumin in inducing acute bronchodilation.
Methods
Bronchial rings from 6 patients were incubated in Krebs-Henseleit solution (37°C) aerated with O2/CO2 (95/5%) under 0.5–1.0 g tension. The effect of drugs (% maximal response to papaverine) administered alone or in combination at isoeffective concentrations was assessed at sub-maximal contraction (70% maximum, EC
70
) induced by acetylcholine. Lung function of 16 COPD patients was assessed after inhalation of indacaterol 150µg and glycopyrronium 50µg, alone or in combination. Spirometric data were normalized for the maximal effect induced by salbutamol. Drug mixture effects were analyzed by Bliss Independence (BI) theory. Values (
ex vivo
n=3,
in vivo
n=16) are mean±SEM.
Results
Both glycopyrronium and indacaterol completely relaxed bronchial rings in a concentration-dependent manner, glycopyrronium was more potent than indacaterol (pD₂: 8.75±0.04 and 7.68±0.22, respectively; P<0.01). The combination produced synergistic interaction at low concentrations inducing EC
30
(BI delta effect: 0.26±0.03, P<0.05). In COPD patients, glycopyrronium and indacaterol in combination significantly anticipated at 15 min post-administration the mean peak of bronchodilatory effect, compared with drugs administered alone. Synergistic interaction was detected for FEV₁ at 15 min post-administration and additive effect persisted between 5 min and 180 min post-inhalation.
Conclusions
QVA149 ensures a broncholytic effect that is much broader than what can be observed with the single monocomponents.
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M. Cazzola, L. Calzetta, A. Segreti, F. Facciolo, P. Rogliani, M. G. Matera (Rome, Naples, Italy). Translational study searching for synergy between glycopyrronium and indacaterol. Eur Respir J 2014; 44: Suppl. 58, 1516
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