Abstract
The purpose of this study was to quantify and compare the density of dendritic cells (DCs) in cervical lymph nodes (LNs) and palatine tonsils (PTs) of AIDS and non-AIDS patients. Factor XIIIa, CD1a and CD83 antibodies were used to identify migratory DCs by immunohistochemistry in LNs and PTs of 32 AIDS patients and 21 HIV-negative control patients. Quantification was performed by the positive pixel count analytical method. AIDS patients presented a lower density of factor XIIIa(+) cells (P < 0.001), CD1a(+) cells (P < 0.05) and CD83(+) cells (P < 0.001) in cervical LNs and PTs compared to the non-AIDS control group. Overall depletion of DCs in lymphoid tissues of AIDS patients may be predictive of the immune system's loss of disease control.
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