title: Th1/Th2 Cytokine Profile and Its Diagnostic Value in Mycoplasma pneumoniae Pneumonia.
abstract: BACKGROUND
  The levels of Th1/Th2 cytokine can alter in pathogenic infection in children with pneumonia.
  
  
  OBJECTIVE
  To evaluate Th1/Th2 cytokine profile and its diagnostic value in M. pneumoniae pneumonia in children.
  
  
  METHODS
  Children with M. pneumoniae mono-infection and 30 healthy children were tested with cytokines assay. We used real time PCR to detect M. pneumoniae in children with pneumonia.
  
  
  RESULTS
  M. pneumoniae test was positive in 2188 (16.62%) out of 13161 pneumonia children. Children aged 5 - 9 years had the highest rate and summer was a season with high rate of M. pneumoniae incidence in Zhejiang province. During the course of study, in 526 pneumonia children with M. pneumoniae mono-infection and 30 healthy children cytokines assay was performed. IL-2 level of M. pneumoniae pneumonia children was lower than that of healthy children (median levels, pg/mL: IL-2: 3.2 vs. 5.7, P = 0.00), while IL-4, IL-10 and IFN-γ were higher than in healthy children (median levels, pg/mL: IL-4: 3.2 vs. 1.5, P = 0.00; IL-10: 5.6 vs. 2.5, P = 0.001; IFN-γ: 20.4 vs. 4.8, P = 0.001).
  
  
  CONCLUSIONS
  IL-2 decreases and IL-4, IL-10 and IFN-γ increase in children with M. pneumoniae pneumonia, which has a promising prospect in diagnosis of this disease in clinical practice.
authors: Department of Clinical Laboratory, Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China.
authors: Wei
authors: W
authors: Li
authors: Department of Clinical Laboratory, Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China.
authors: Yu-Jie
authors: YJ
authors: Liu
authors: Department of Clinical Laboratory, Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China.
authors: Xiao-le
authors: XL
authors: Zhao
authors: Department of Clinical Laboratory, Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China.
authors: Shi-Qiang
authors: SQ
authors: Shang
authors: Center for Clinical and Translational Science, Mayo Clinic, Rochester, Minnesota, USA.
authors: Lang
authors: L
authors: Wu
authors: Department of Clinical Laboratory, Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China.
authors: Qing
authors: Q
authors: Ye
authors: Department of Clinical Laboratory, Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China.
authors: Hui
authors: H
authors: Xu
keywords: Children; Cytokines; M. pneumoniae; Pneumonia