title: [Effect of formaldehyde inhalation on allergic rhinitis in mice].
abstract: OBJECTIVE
  To observe the effect of formaldehyde inhalation on the allergic rhinitis mice model.
  
  
  METHODS
  Forty-eight male BALB/C mice in six experimental group were exposure to (A) saline control; (B) Der p1; (C) formaldehyde (3.0 mg/m3); (D) Derp1 + formaldehyde (1.5 mg/m3); (E) Der p1 + formaldehyde (3.0 mg/M3); (F) Der p1+ formaldehyde (6.0 mg/m3). The concentrations of IL-4, IL-10 and IFN-γ in the peripheral serum were measured by enzyme-linked immunosorbent assay(ELISA). Nasal mucosal inflammation was evaluated by HE staining. Result: Formaldehyde exposure could increase the number of allergic rhinitis mice with sneezing and rubbing nose. The levels of IL-4 and IL-10 in group B, D, E and F were higher than that ingroup A (P < 0.05). Compared with the group C, the group D, E and F could effectively increase serum IL-4 and IL-10. The concentration of IL-4 in group E and F was higher than that of group B, while the group C was lower (P < 0.05). The concentration of IL-10 in group D, E and F was higher than that in group B (P < 0.05). The expression of IFN-γ in group B, D, E and F was lower than that in group A. While, the IFN-γ expression in group B was lower than that of group C and higher than that in group F (P < 0.05). Moreover, the concentration of IFN-γ in group D, E and F was lower compared with group C (P < 0.05). The nasal mucosa HE staining showed that the density of EOS increased simultaneously in formaldehyde exposure allergic rhinitis groups.
  
  
  CONCLUSIONS
  The study showed that formaldehyde exposure can promote Th2 cytokines and eosinophil infiltration and then aggravate the allergic rhinitis symptoms.
authors.forename: Rong
authors.initials: R
authors.lastname: Xiang
authors.forename: Yu
authors.initials: Y
authors.lastname: Xu
mesh_terms: D000818:Animals; D039741:Antigens, Dermatophagoides; D060829:Arthropod Proteins; D003546:Cysteine Endopeptidases; D004195:Disease Models, Animal; D004797:Enzyme-Linked Immunosorbent Assay; D005557:Formaldehyde / Q000009:adverse effects*; D007249:Inflammation; D019570:Inhalation Exposure / Q000009:adverse effects; D007371:Interferon-gamma / Q000097:blood; D016753:Interleukin-10 / Q000097:blood; D015847:Interleukin-4 / Q000097:blood; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D009297:Nasal Mucosa; D065631:Rhinitis, Allergic / Q000139:chemically induced*
chemical_list: D039741:Antigens, Dermatophagoides; D060829:Arthropod Proteins; D016753:Interleukin-10; D005557:Formaldehyde; D015847:Interleukin-4; D007371:Interferon-gamma; D003546:Cysteine Endopeptidases; C451162:Dermatophagoides pteronyssinus antigen p 1