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Updated: Aug 8, 2026

Peptide-based Identification of Functional Motifs and their Binding Partners
Published on: July 1, 2013
Increased levels of serum intercellular adhesion molecule 1 in HIV infection are related to immune activation
A Diez-Ruiz1, G Kaiser, H Jäger
1Institute of Medical Chemistry and Biochemistry, University of Innsbruck, Austria.
Abstract:
Cytopathic mechanisms in human immunodeficiency virus type 1 (HIV-1) infection involve syncytia formation, and it appears likely that increased expression of intracellular adhesion molecule 1 (ICAM-1) is involved in these cell adhesion phenomena. In this study, we determined serum concentrations of soluble ICAM-1 (sICAM-1) in 27 patients with HIV-1 infection and a control group. In addition, we compared sICAM-1 values to CD4+ T-cell counts, serum beta 2-microglobulin (beta 2M) and serum neopterin levels. HIV-1-infected patients had significantly higher sICAM-1, beta 2M and neopterin levels than controls. The subgroup of patients with Walter-Reed stages 3-6 had only slightly higher sICAM-1 concentrations in serum than Walter-Reed stages 1-2. The sICAM-1 concentrations in HIV-1-seropositive patients correlated with beta 2M levels but neither with neopterin nor with CD4+ T-cell counts. Increased sICAM-1 may result from immune activation, which enhances the expression of ICAM-1 in patients with HIV-1 infection.
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