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International Journal of Pediatrics
Volume 2011, Article ID 967460, 8 pages
http://dx.doi.org/10.1155/2011/967460
Research Article

Induced Sputum Substance P in Children with Difficult-to-Treat Bronchial Asthma and Gastroesophageal Reflux: Effect of Esomeprazole Therapy

1Chest Department, Faculty of Medicine, Tanta University, Tanta 1084, Egypt
2Paediatric Department, Faculty of Medicine, Tanta University, Tanta, Egypt
3Internal Medicine Department, Faculty of Medicine, Minoufiya University, Shebeen El-Koom, Egypt
4Microbiology and Immunology Department, Faculty of Medicine, Benha University, Benha, Egypt

Received 29 July 2011; Revised 9 October 2011; Accepted 19 October 2011

Academic Editor: Joseph M. Croffie

Copyright © 2011 Adel Salah Bediwy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives. To assess the induced sputum substance P (ISSP) levels in children having difficult-to-treat asthma (DA) with and without gastroesophageal reflux (GER). We aimed also to evaluate the association of GER with childhood DA, relationship of GER severity with childhood asthma control test (C-ACT), FEV1, peak expiratory flow (PEF) variability, and ISSP. Finally, we tried to evaluate esomeprazole treatment effect on C-ACT and FEV1 in children with DA. Methods. Spirometry, C-ACT, upper gastrointestinal endoscopy, and ISSP measurement were done for children with DA compared to healthy controls. Results. ISSP was high in DA with higher levels in the group having associated GER. In the latter group, ISSP and C-ACT improved significantly after esomeprazole treatment while FEV1 and PEF variability did not improve. Reflux severity was positively correlated with ISSP and negatively correlated with FEV1. Conclusions. GER was found in 49% of our patients with childhood DA. Very high ISSP levels in children with DA may be used as a marker for presence of GERD. Esomeprazole therapy improved asthma symptoms but did not improve lung function.