title: [The changes and significance of T lymphocytes and subsets before and after receiving highly active anti-retroviral therapy in children infected with HIV or AIDS patients].
abstract: OBJECTIVE
  To investigate the changes of the T lymphocytes and their subsets before and after receiving highly active anti-retroviral therapy (HAART) in children who were infected with HIV or AIDS patients.
  
  
  METHODS
  Ninety-nine children met the criteria were recruited. All of them had received HAART in Guangxi Center for Disease Control and Prevention from May 2006 to April 2009. Peripheral blood of 2 milliliter was collected before treatment (D0) and after 3, 6, 12, 18, 24, 30, and 36 months (M3, M6, M12, M18, M24, M30 and M36), respectively. Four-color fluorescence flow cytometry was used for the detection of the absolute numbers of CD3(+), CD4(+), CD8(+) T lymphocytes in peripheral blood. And then, the percentages of CD3(+), CD4(+), CD8(+) T lymphocytes in the CD45(+) cells and the ratio of CD4/CD8 were calculated.
  
  
  RESULTS
  Sixteen-five (65.66%) cases were treated with lamivudine (3TC)/zidovudine (AZT)/nevirapine (NVP), and 16 (16.16%), 8 (8.08%) and 10 (10.10%) cases were treated with 3TC/stavudine (D4T)/NVP, 3TC/AZT/efavirenz (EFV) and 3TC/AZT/lpv-rtv (LPV/r), respectively. The median of the ratio of CD4/CD8 were 0.39, 0.51, 0.61, 0.65, 0.70, 0.73 and 0.76 in M3, M6, M12, M18, M24, M30 and M36, respectively which were significantly higher than that in D0 (0.19) (Z values were -5.158, -7.375, -9.078, -8.853, -8.373, -5.845 and -5.844 respectively, P < 0.000). The median of CD4% were 16.92%, 22.70%, 25.54%, 26.66%, 27.99%, 30.36% and 29.30% respectively in M3, M6, M12, M18, M24, M30 and M36 respectively, which were also higher significantly than that in D0 (9.92%) (Z values were -5.268, -7.568, -9.496, -9.171, -8.760, -6.190 and -5.964 respectively, P < 0.000). In addition, the median of the absolute numbers of CD4(+)T lymphocytes in peripheral blood were 631, 813, 1050, 946, 1057, 1166 and 894 cells/mm(3) respectively in M3, M6, M12, M18, M24, M30 and M36, which were higher significantly than that of D0 (382 cells/mm(3)) (Z values were -3.318, -5.288, -6.661, -5.886, -5.801, -4.110 and -3.600 respectively, P < 0.000). However, the median of CD8% were 47.25%, 43.01%, 43.04%, 42.60%, 41.37%, 40.83% and 38.31% respectively in M3, M6, M12, M18, M24, M30 and M36, which were lower significantly than that of D0 (53.17%) (Z values were -3.082, -4.697, -5.282, -5.846, -5.757, -3.883 and -4.380 respectively, P < 0.001).
  
  
  CONCLUSIONS
  There is certain rules for the changes of T lymphocytes and their subsets, which may play important roles in the evaluation of the therapeutic effect and the clinical application guidance of HAART.
authors.affiliation: Division of HIV/AIDS/STD Prevention and Control, Guangxi Center for Disease Control and Prevention, Nanning, China. lijianjun810@sina.com
authors.forename: Jian-jun
authors.initials: JJ
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Zhi-rong
authors.initials: ZR
authors.lastname: Tang
authors.forename: Fu-xiong
authors.initials: FX
authors.lastname: Liang
authors.forename: Chong-xing
authors.initials: CX
authors.lastname: Zhou
authors.forename: Shu-jia
authors.initials: SJ
authors.lastname: Liang
authors.forename: Hong-yan
authors.initials: HY
authors.lastname: Lu
authors.forename: Guo-zhuang
authors.initials: GZ
authors.lastname: Li
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Jiang-wei
authors.initials: JW
authors.lastname: Wang
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000188:drug therapy / Q000276:immunology*; D023241:Antiretroviral Therapy, Highly Active; D015496:CD4-Positive T-Lymphocytes; D018414:CD8-Positive T-Lymphocytes; D002648:Child; D002675:Child, Preschool; D005260:Female; D015658:HIV Infections / Q000188:drug therapy / Q000276:immunology*; D006801:Humans; D007223:Infant; D018655:Lymphocyte Count; D008297:Male; D016176:T-Lymphocyte Subsets