This proposed study will evaluate the activation and other surface markers of T and B lymphocytes, natural killer cells and monocytes in children who are enrolled in the PREDICT Study (CIPRA 1U19AI53741-01A1, An open label, randomized study to compare antiretroviral therapy initiation (ART) when CD4+ is between 15- 24% to ART initiation when CD4+ falls below 15% in children with HIV infection and moderate immune suppression). Measurements of the following markers will be performed by flow cytometry in 300 children at baseline and yearly for 3 years: CDS, CD4, CDS, CD19, CD16/56, CD4/45RA/62L, CD8/45RA/62L, CD4/DR/38, CD8/DR/38, CD3/4/45RO, CD3/4-/45RO, CD14/16/DR and CD14/16/163 The primary objectives and hypotheses are to 1) Determine if children randomized to deferred antiretroviral therapy who survive at 8 years and longer without CD4 falling below 15% display an early unique expression of activation or other markers on their peripheral blood mononuclear cells. Hypothesis: Low or high values of activated and other T cell subset distributions such as low activated cytotoxic T cells (CD8+DR+CD38+) and high naive T cells (CD45+RA+62L+) predicts those children who will not need antiretroviral therapy to keep their CD4+ T cell percentages above 15%. 2) Determine if children with neurodevelopment impairment display an early unique expression of activation or other markers on their peripheral blood mononuclear cells Hypothesis: High activated cytotoxic T cells (CD8+DR+CD38+), activated monocytes (CD14+CD16+DR+) and perivascular macrophages (CD14+CD16+CD163+) predict those children with neurodevelopment impairment. This study complements two collaborative research funded by NIH including the NIAID-funded CIPRA grant for the main when to start study and supplemental grants for the neurodevelopment sub-study from both NICHD and NIMH. This study is relevant to public health because it will provide knowledge on whether certain cells in the blood can predict children who will have worsening of HIV disease or neurodevelopment. This will be important in deciding when to treat children with antiretroviral therapy.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI075408-03
Application #
7628962
Study Section
Special Emphasis Panel (ZAI1-GSM-M (M1))
Program Officer
Petrakova, Eva
Project Start
2007-07-15
Project End
2011-06-30
Budget Start
2009-07-01
Budget End
2010-06-30
Support Year
3
Fiscal Year
2009
Total Cost
$79,461
Indirect Cost
Name
HIV-Nat, the Thai Red Cross AIDS Rch Center
Department
Type
DUNS #
671556129
City
Bangkok
State
Country
Thailand
Zip Code
10330
Paul, Robert; Apornpong, Tanakorn; Prasitsuebsai, Wasana et al. (2018) Cognition, Emotional Health, and Immunological Markers in Children With Long-Term Nonprogressive HIV. J Acquir Immune Defic Syndr 77:417-426
Ananworanich, Jintanat; Kerr, Stephen J; Jaimulwong, Tanyathip et al. (2015) Soluble CD163 and monocyte populations in response to antiretroviral therapy and in relationship with neuropsychological testing among HIV-infected children. J Virus Erad 1:196-202
Mandala, Wilson L; Ananworanich, Jintanat; Apornpong, Tanakorn et al. (2014) Control lymphocyte subsets: can one country's values serve for another's? J Allergy Clin Immunol 134:759-761.e8
Ananworanich, Jintanat; Apornpong, Tanakorn; Kosalaraksa, Pope et al. (2010) Characteristics of lymphocyte subsets in HIV-infected, long-term nonprogressor, and healthy Asian children through 12 years of age. J Allergy Clin Immunol 126:1294-301.e10