title: [B Cell Activating Transcription Factor Regulates Acute Airway Inflammation in Asthmatic Mice].
abstract: OBJECTIVE
  To investigate the regulatory effect of B cell activating transcription factor (BATF) on acute airway inflammation and its association with retinoic acid orphan nuclear receptors gammat (RORyt) in asthmatic mice.
  
  
  METHODS
  24 female BALB/c mice were randomly and equally divided into three groups (n 8): normal saline (NS) treated, asthma (AS) control and dexamethasone (DEX) treated. AS mice were sensitized and challenged with OVA to establish murine asthma model. Histological changes in lung tissues of the mice were observed by HE staining. Numbers of white blood cell (WBC), polymorphonuclear leukocyte (PMN) and eosinophils (EOS) in the bronchoalveolar lavage fluid (BALF) of the mice were counted. The concentration of interleukin-17 (IL-17) in BALF was measured by ELISA. Quantitative real-time PCR (RT-PCR) was performed to assess the mRNA expressions of BATF, IL-17 and RORγt in the lung tissues.
  
  
  RESULTS
  The HE staining showed a higher level of inflammatory cell infiltration around the bronchi of AS mice compared with those treated with NS, predominantly in the forms of EOS, PMN and lymphocytes. The AS and DEX treated mice had higher levels of EOS, PMN, WBC and mRNA expressions of BATF, IL-17 and RORγt in BALF than those treated with NS (P < 0.05). DEX reduced the levels of EOS, PMN, WBC and IL-17 in BALF significantly (P < 0.05). The mRNA expression of BATF in lung tissues of mice was positively correlated with the expression of IL-17, RORγt and the counts of WBC,EOS and PMN in BALF (P < 0.05).
  
  
  CONCLUSIONS
  Asthmatic mice have increased expressions of BATF, IL-17 and RORγt in bronchial and lung tissues. BATF can, through regulating the secretion of Th17 cells, readjust the airway inflammatory. The regulatory function may take effect through synergy with RORγt .
authors.lastname: Yuan Shu-li
authors.forename: Ping
authors.initials: P
authors.lastname: Zhong
authors.forename: Xian-ming
authors.initials: XM
authors.lastname: Fan
authors.forename: Cheng-liang
authors.initials: CL
authors.lastname: Huang
authors.forename: Wen-jun
authors.initials: WJ
authors.lastname: Wang
authors.forename: Xiao-qin
authors.initials: XQ
authors.lastname: Zhan
authors.forename: Xiao-peng
authors.initials: XP
authors.lastname: He
mesh_terms: D051696:Activating Transcription Factors / Q000378:metabolism*; D000818:Animals; D001249:Asthma / Q000378:metabolism / Q000473:pathology*; D001980:Bronchi; D001992:Bronchoalveolar Lavage Fluid; D003907:Dexamethasone; D004804:Eosinophils / Q000166:cytology; D005260:Female; D007249:Inflammation / Q000473:pathology*; D020381:Interleukin-17 / Q000378:metabolism; D007958:Leukocyte Count; D008168:Lung / Q000378:metabolism / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D057132:Nuclear Receptor Subfamily 1, Group F, Member 3 / Q000378:metabolism*; D058504:Th17 Cells / Q000166:cytology
chemical_list: D051696:Activating Transcription Factors; D020381:Interleukin-17; D057132:Nuclear Receptor Subfamily 1, Group F, Member 3; D003907:Dexamethasone