title: CD4 cell response before and after HAART initiation according to viral load and growth indicators in HIV-1-infected children in Abidjan, Côte d'Ivoire.
abstract: OBJECTIVE
  To analyze the determinants of CD4 change in children during 3 periods: before highly active antiretroviral therapy (HAART), during the first year after HAART initiation, and past 1 year after HAART initiation.
  
  
  METHODS
  One hundred seventy-seven children enrolled in a prospective cohort in Abidjan received HAART during a mean follow-up of 30 months. A linear mixed-effects model was used for the first period, a mixed-effects piecewise model for the second period, and an asymptotic mixed-effects model for long-term CD4 dynamics.
  
  
  RESULTS
  Before HAART initiation, CD4 percentage decreased along time [beta = -0.59 (-0.92 to -0.26)] was positively associated with body mass index for age [beta = 0.47 (0.22 to 0.72)] and negatively associated with viral load [beta = -1.01 (-1.90 to -0.13)]. During the first year of treatment, the CD4 decrease reverted to a steep increase that was negatively associated with age at HAART initiation [beta = -0.24 (-0.4 to -0.07)] and with the mean viral load under HAART [beta = -1.51 (-2.21 to -0.81)]. The long-term CD4 percentage was also negatively associated with the mean viral load under HAART [beta = -4.97 (-6.22 to -3.72)] and age at HAART initiation [beta = -0.82 (-1.12 to -0.51)].
  
  
  CONCLUSIONS
  Before HAART initiation, the CD4 cell percentage was associated with growth indicators whereas, after HAART, an early increase and a long-term plateau were negatively associated with the viral load and age at HAART initiation.
authors.affiliation: UMR 145, Institut de Recherche pour le Développement, Montpellier, France. pierre.debeaudrap@ird.fr
authors.forename: Pierre
authors.initials: P
authors.lastname: De Beaudrap
authors.forename: François
authors.initials: F
authors.lastname: Rouet
authors.forename: Patricia
authors.initials: P
authors.lastname: Fassinou
authors.forename: Alain
authors.initials: A
authors.lastname: Kouakoussui
authors.forename: Sabine
authors.initials: S
authors.lastname: Mercier
authors.forename: René
authors.initials: R
authors.lastname: Ecochard
authors.forename: Philippe
authors.initials: P
authors.lastname: Msellati
mesh_terms: D000367:Age Factors; D023241:Antiretroviral Therapy, Highly Active; D015992:Body Mass Index; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D007560:Cote d'Ivoire; D006128:Growth; D015658:HIV Infections / Q000188:drug therapy* / Q000276:immunology / Q000503:physiopathology; D015497:HIV-1; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D019562:Viral Load