title: [Effects of astragalus membranaceus on TH cell subset function in children with recurrent tonsillitis].
abstract: OBJECTIVE
  To observe the TH cell subset function in children with recurrent tonsillitis (RT) at the remission stage and to study the effects of astragalus membranacus (AM) on TH cell subset function.
  
  
  METHODS
  The peripheral blood mononuclear cells (PBMC) from 27 children with RT at the remission stage were stimulated with either phytohemagalutinin (PHA) (RT-PHA group) or PHA together with AM (RT-AM group) and were then cultured in vitro for 48 hrs. The samples from 21 healthy children stimulated with PHA were used as the Control group. The levels of interferon-gamma (IFN-gamma) and interleukin-4 (IL-4) in the supernatants of PBMC were detected using ELISA.
  
  
  RESULTS
  The IFN-gamma level and the ratio of IFN-gamma/IL-4 in the RT-PHA group were statistically lower than those in the Control group (P < 0.01). The level of IFN-gamma and the ratio of IFN-gamma/IL-4 in the RT-AM group were markedly higher than those in the RT-PHA group (P < 0.01), but were significantly lower than those in the Control group (P < 0.05). There were no differences in the IL-4 level among the three groups.
  
  
  CONCLUSIONS
  TH1 cell subset dysfunction may exit in RT children at the remission stage, suggesting that TH1 cell subset dysfunction plays an important role in the pathogenesis of RT. AM can improve TH1 cell subset function and therefore shows an important significance in treating RT.
authors.affiliation: Department of Pediatrics, First People's Hospital of Yulin, Yulin, Shangxi 718000, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Li-Dong
authors.initials: LD
authors.lastname: Wang
authors.forename: Zong-Bo
authors.initials: ZB
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D027885:Astragalus propinquus; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007371:Interferon-gamma / Q000096:biosynthesis; D015847:Interleukin-4 / Q000096:biosynthesis; D008297:Male; D010835:Phytohemagglutinins / Q000494:pharmacology; D012008:Recurrence; D018417:Th1 Cells / Q000276:immunology*; D018418:Th2 Cells / Q000276:immunology*; D014069:Tonsillitis / Q000209:etiology / Q000276:immunology*
chemical_list: D010835:Phytohemagglutinins; D015847:Interleukin-4; D007371:Interferon-gamma