PMID- 17389779 OWN - NLM STAT- MEDLINE DCOM- 20071023 LR - 20151119 IS - 0025-7931 (Print) IS - 0025-7931 (Linking) VI - 74 IP - 5 DP - 2007 TI - Proton pump inhibitor improves breath marker in moderate asthma with gastroesophageal reflux disease. PG - 558-64 AB - BACKGROUND: Gastroesophageal reflux disease (GERD) influences the symptoms of asthma with acid and oxidative stress. OBJECTIVES: The purpose of this study was to determine the usefulness of measurement of the acid stress marker pH and the oxidative stress marker 8-isoprostane by exhaled breath condensate in proton pump inhibitor (PPI) therapy effect on moderate asthma patients with GERD. METHODS: The pH and the concentration of 8-isoprostane were measured in the exhaled breath condensate of patients with moderate asthma (n = 36) and healthy subjects (n = 26). Two months of PPI therapy (lansoprazole at 30 mg/day) were done in the asthma patients with (n = 13) or without (n = 13) GERD according to a questionnaire for the diagnosis of reflux disease, and exhaled markers were measured. RESULTS: The pH was lower (7.3 +/- 0.3) and the 8-isoprostane level was higher (27.7 +/- 2.3) in the asthma patients than in the healthy control subjects (pH 7.5 +/- 0.2 and 8-isoprostane 6.6 +/- 1.2). Two months of PPI therapy improved the pH (from 7.2 +/- 0.1 to 7.3 +/- 0.1) and the 8-isoprostane concentration (from 32.7 +/- 3.4 to 19.2 +/- 3.4) in the asthma patients with GERD, along with improvement of GERD symptoms. However, these markers did not change in the asthma patients without GERD. CONCLUSIONS: Measurement of the pH and 8-isoprostane level of exhaled breath condensate may be useful to evaluate the influence of GERD on asthma, as well as to determine the timing of intermittent PPI therapy. CI - Copyright 2007 S. Karger AG, Basel. FAU - Shimizu, Yasuo AU - Shimizu Y AD - Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan. yasuos@med.gunma-u.ac.jp FAU - Dobashi, Kunio AU - Dobashi K FAU - Zhao, Jian Jun AU - Zhao JJ FAU - Kawata, Tadayoshi AU - Kawata T FAU - Ono, Akihiro AU - Ono A FAU - Yanagitani, Noriko AU - Yanagitani N FAU - Kaira, Kyoichi AU - Kaira K FAU - Utsugi, Mitsuyoshi AU - Utsugi M FAU - Hisada, Takeshi AU - Hisada T FAU - Ishizuka, Tamotsu AU - Ishizuka T FAU - Mori, Masatomo AU - Mori M LA - eng PT - Journal Article DEP - 20070327 PL - Switzerland TA - Respiration JT - Respiration; international review of thoracic diseases JID - 0137356 RN - 0 (2-Pyridinylmethylsulfinylbenzimidazoles) RN - 0 (Biomarkers) RN - 0 (Proton Pump Inhibitors) RN - 0K5C5T2QPG (Lansoprazole) RN - 27415-26-5 (8-epi-prostaglandin F2alpha) RN - B7IN85G1HY (Dinoprost) SB - IM MH - 2-Pyridinylmethylsulfinylbenzimidazoles/*pharmacology/therapeutic use MH - Asthma/drug therapy/*epidemiology MH - Biomarkers/analysis MH - Breath Tests MH - Comorbidity MH - Dinoprost/analogs & derivatives/analysis MH - Female MH - Gastroesophageal Reflux/*epidemiology MH - Humans MH - Hydrogen-Ion Concentration MH - Lansoprazole MH - Male MH - Middle Aged MH - Oxidative Stress MH - *Proton Pump Inhibitors EDAT- 2007/03/29 09:00 MHDA- 2007/10/24 09:00 CRDT- 2007/03/29 09:00 PHST- 2006/10/23 00:00 [received] PHST- 2007/01/11 00:00 [accepted] PHST- 2007/03/29 09:00 [pubmed] PHST- 2007/10/24 09:00 [medline] PHST- 2007/03/29 09:00 [entrez] AID - 000101437 [pii] AID - 10.1159/000101437 [doi] PST - ppublish SO - Respiration. 2007;74(5):558-64. doi: 10.1159/000101437. Epub 2007 Mar 27.