PMID- 18677972 OWN - NLM STAT- MEDLINE DCOM- 20080829 LR - 20131121 IS - 0004-4172 (Print) IS - 0004-4172 (Linking) VI - 58 IP - 6 DP - 2008 TI - Effect of an orally active Th2 cytokine inhibitor, suplatast on "atopic cough" tosilate. PG - 297-302 LID - 10.1055/s-0031-1296510 [doi] AB - BACKGROUND: "Atopic cough" is a new clinical entity that presents with isolated chronic bronchodilator-resistant cough accepted in the Japanese Respiratory Society Guidelines for Management of Cough. The essential features are eosinophilic tracheobronchitis, increased cough reflex sensitivity and an atopic constitution. It has been suggested that activated helper T lymphocytes and the cytokines which are produced by these cells are involved in the pathogenesis, but the relationship between helper T cell-derived cytokines and the airway cough reflex sensitivity remains unknown. METHODS: The effect of an orally active Th2 cytokine inhibitor, suplatast tosilate (CAS 94055-76-2, IPD; 300 mg/day), on the cough response to inhaled capsaicin (CAS 404-86-4) was examined in ten patients with atopic cough. The capsaicin cough threshold, defined as the lowest concentration of capsaicin eliciting five or more coughs, was measured as an index of airway cough reflex sensitivity. The serum total immunoglobulin E (IgE) level and the peripheral blood eosinophil count were also determined after treatment with suplatast tosilate. RESULTS: The cough threshold measured after four weeks of treatment with suplatast tosilate was significantly increased compared to the value obtained with placebo, along with a decrease of the serum IgE level and peripheral eosinophil count. CONCLUSIONS: Th2 cytokines may increase the airway cough reflex sensitivity in patients with atopic cough. Oral administration of suplatast tosilate may be a novel therapy for atopic cough. FAU - Ishiura, Yoshihisa AU - Ishiura Y AD - Department of Respiratory Medicine, Toyama City Hospital, Toyama, Japan. ishiura-@p2322.nsk.ne.jp FAU - Fujimura, Masaki AU - Fujimura M FAU - Yamamoto, Hiroki AU - Yamamoto H FAU - Nobata, Kouichi AU - Nobata K FAU - Ishiguro, Takashi AU - Ishiguro T FAU - Ogawa, Haruhiko AU - Ogawa H FAU - Myou, Shigeharu AU - Myou S LA - eng PT - Journal Article PL - Germany TA - Arzneimittelforschung JT - Arzneimittel-Forschung JID - 0372660 RN - 0 (Anti-Allergic Agents) RN - 0 (Arylsulfonates) RN - 0 (Bronchodilator Agents) RN - 0 (Cytokines) RN - 0 (Immunoglobulin G) RN - 0 (Sulfonium Compounds) RN - C9J89787U1 (suplatast tosilate) RN - S07O44R1ZM (Capsaicin) SB - IM MH - Adult MH - Aged MH - Anti-Allergic Agents/*therapeutic use MH - Arylsulfonates/*therapeutic use MH - Bronchi/drug effects MH - Bronchodilator Agents/pharmacology MH - Capsaicin MH - Cough/chemically induced/*drug therapy MH - Cytokines/*biosynthesis MH - Drug Resistance MH - Eosinophils MH - Female MH - Forced Expiratory Volume/drug effects MH - Humans MH - Immunoglobulin G/blood MH - Male MH - Middle Aged MH - Reflex/drug effects MH - Respiratory Function Tests MH - Sulfonium Compounds/*therapeutic use MH - Th2 Cells/*drug effects/*metabolism MH - Vital Capacity/drug effects EDAT- 2008/08/06 09:00 MHDA- 2008/08/30 09:00 CRDT- 2008/08/06 09:00 PHST- 2008/08/06 09:00 [pubmed] PHST- 2008/08/30 09:00 [medline] PHST- 2008/08/06 09:00 [entrez] AID - 10.1055/s-0031-1296510 [doi] PST - ppublish SO - Arzneimittelforschung. 2008;58(6):297-302. doi: 10.1055/s-0031-1296510.