title: Influence of epinastine hydrochloride, an H1-receptor antagonist, on the function of mite allergen-pulsed murine bone marrow-derived dendritic cells in vitro and in vivo.
abstract: There is established concept that dendritic cells (DCs) play essential roles in the development of allergic immune responses. However, the influence of H(1) receptor antagonists on DC functions is not well defined. The aim of the present study was to examine the effect of epinastine hydrochloride (EP), the most notable histamine H(1) receptor antagonists in Japan, on Dermatophagoides farinae (Der f)-pulsed mouse bone marrow-derived DCs in vitro and in vivo. EP at more than 25 ng/mL could significantly inhibit the production of IL-6, TNF-alpha and IL-10 from Der f-pulsed DCs, which was increased by Der f challenge in vitro. On the other hand, EP increased the ability of Der f-pulsed DCs to produce IL-12. Intranasal instillation of Der f-pulsed DCs resulted in nasal eosinophilia associated with a significant increase in IL-5 levels in nasal lavage fluids. Der f-pulsed and EP-treated DCs significantly inhibited nasal eosinophila and reduced IL-5. These results indicate that EP inhibits the development of Th2 immune responses through the modulation of DC functions and results in favorable modification of clinical status of allergic diseases.
authors.affiliation: Department of Otolaryngology, School of Medicine, Showa University, Tokyo 142-8555, Japan.
authors.forename: Ken-Zaburo
authors.initials: KZ
authors.lastname: Oshima
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Asano
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Kanai
authors.forename: Miyuki
authors.initials: M
authors.lastname: Suzuki
authors.forename: Harumi
authors.initials: H
authors.lastname: Suzaki
mesh_terms: D000281:Administration, Intranasal; D000485:Allergens / Q000276:immunology*; D000818:Animals; D001854:Bone Marrow Cells / Q000166:cytology*; D002454:Cell Differentiation; D002478:Cells, Cultured; D016207:Cytokines / Q000037:antagonists & inhibitors / Q000096:biosynthesis; D003713:Dendritic Cells / Q000166:cytology / Q000187:drug effects* / Q000276:immunology* / Q000378:metabolism; D040001:Dermatophagoides farinae / Q000276:immunology*; D003984:Dibenzazepines / Q000008:administration & dosage / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006634:Histamine H1 Antagonists / Q000008:administration & dosage / Q000494:pharmacology*; D007093:Imidazoles / Q000008:administration & dosage / Q000494:pharmacology*; D066298:In Vitro Techniques; D007249:Inflammation / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D017817:Nasal Lavage Fluid / Q000166:cytology; D018418:Th2 Cells / Q000187:drug effects / Q000276:immunology
chemical_list: D000485:Allergens; D016207:Cytokines; D003984:Dibenzazepines; D006634:Histamine H1 Antagonists; D007093:Imidazoles; C053090:epinastine