CD4 masking during human immunodeficiency virus type 1 infection, quantified on peripheral blood lymphocytes, is a potential marker of disease progression

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Abstract

In human immunodeficiency virus type 1 (HIV-1)-infected adults, the proportion of gp120-free CD4 molecules on the surface of T lymphocytes was measured by double-epitope EIA and expressed as a CD4 epitope concentration ratio. In 51% of these patients (n = 81), CD4 T cells showed a significant decrease (up to 100%) in the accessibility of the CD4 epitope corresponding to the gp120 binding site (CDR2-like region), whereas another epitope in the D1 domain remained accessible. Of interest, a significant increase in the CD4 gp120 binding site concentration, without a change in T cell counts, was observed within 10 days after initiation of zidovudine treatment. Furthermore, CD4 masking by gp120 was associated with a poor clinical patient status. The assessment of the CD4 epitope concentration ratio is proposed as a surrogate marker of disease progression in HIV-1-infected patients.

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Carrière, D., Vendrell, J. P., Berthier, A. M., Atoui, N., Salhi, S. L., Reynes, J., … Pau, B. (1996). CD4 masking during human immunodeficiency virus type 1 infection, quantified on peripheral blood lymphocytes, is a potential marker of disease progression. Journal of Infectious Diseases, 173(3), 565–573. https://doi.org/10.1093/infdis/173.3.565

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