Yvonne Maldonado

Publication Details

  • ALTERED REPRESENTATION OF NAIVE AND MEMORY CD8 T-CELL SUBSETS IN HIV-INFECTED CHILDREN JOURNAL OF CLINICAL INVESTIGATION Rabin, R. L., Roederer, M., Maldonado, Y., Petru, A., Herzenberg, L. A., Herzenberg, L. A. 1995; 95 (5): 2054-2060

    Abstract:

    CD8 T cells are divided into naive and memory subsets according to both function and phenotype. In HIV-negative children, the naive subset is present at high frequencies, whereas memory cells are virtually absent. Previous studies have shown that the overall number of CD8 T cells does not decrease in HIV-infected children. In studies here, we use multiparameter flow cytometry to distinguish naive from memory CD8 T cells based on expression of CD11a, CD45RA, and CD62L. With this methodology, we show that within the CD8 T cell population, the naive subset decreases markedly (HIV+ vs. HIV-, 190 vs. 370 cells/microliter; P < or = 0.003), and that there is a reciprocal increase in memory cells, such that the total CD8 T cell counts remained unchanged (800 vs. 860 cells/microliter; P < or = 0.76). In addition, we show that for HIV-infected children, the naive CD8 T cell and total CD4 T cell counts correlate (chi 2 P < or = 0.001). This correlated loss suggests that the loss of naive CD8 T cells in HIV infection may contribute to the defects in cell-mediated immunity which become progressively worse as the HIV disease progresses and CD4 counts decrease.

    View details for Web of Science ID A1995QW20500014

    View details for PubMedID 7738172

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