TY - JOUR

T1 - Increased plasma levels of soluble ICAM-1 and ELAM-1 (E-selectin) during acute Plasmodium falciparum malaria

AU - Hviid, L

AU - Theander, T G

AU - Elhassan, I M

AU - Jensen, J B

N1 - Keywords: Acute Disease; Cell Adhesion; Cell Adhesion Molecules; E-Selectin; Enzyme-Linked Immunosorbent Assay; Humans; Intercellular Adhesion Molecule-1; Lymphocyte Activation; Malaria, Falciparum; Receptors, Interleukin-2; Solubility; T-Lymphocytes

PY - 1993

Y1 - 1993

N2 - Acute P. falciparum malaria is associated with a loss of antigen-responsiveness of peripheral T cells, depletion of T cells characterized by high surface expression of the adhesion molecule LFA-1, and increased plasma levels of the T-cell activation marker soluble IL-2 receptor (sIL-2R). In the present study we show that clinical episodes of P. falciparum malaria produced an increase in plasma levels of soluble ICAM-1 (sICAM-1) and ELAM-1 (sELAM-1). The increase was transient and subsided slowly (sICAM-1) or rapidly (sELAM-1) following drug cure. The increases in plasma sICAM-1 and sELAM-1 were significantly correlated, and were furthermore associated with a concomitant increase in plasma levels of sIL-2R. Finally, plasma levels of sICAM-1, but not sELAM-1, were inversely correlated to the fraction of peripheral T cells having high surface expression of LFA-1, the receptor for T-cell adhesion to ICAM-1. Taken together, these observations suggest that acute P. falciparum malaria is characterized by a state of endothelial inflammation associated with the adherence of activated T cells.

AB - Acute P. falciparum malaria is associated with a loss of antigen-responsiveness of peripheral T cells, depletion of T cells characterized by high surface expression of the adhesion molecule LFA-1, and increased plasma levels of the T-cell activation marker soluble IL-2 receptor (sIL-2R). In the present study we show that clinical episodes of P. falciparum malaria produced an increase in plasma levels of soluble ICAM-1 (sICAM-1) and ELAM-1 (sELAM-1). The increase was transient and subsided slowly (sICAM-1) or rapidly (sELAM-1) following drug cure. The increases in plasma sICAM-1 and sELAM-1 were significantly correlated, and were furthermore associated with a concomitant increase in plasma levels of sIL-2R. Finally, plasma levels of sICAM-1, but not sELAM-1, were inversely correlated to the fraction of peripheral T cells having high surface expression of LFA-1, the receptor for T-cell adhesion to ICAM-1. Taken together, these observations suggest that acute P. falciparum malaria is characterized by a state of endothelial inflammation associated with the adherence of activated T cells.

U2 - 10.1016/0165-2478%2893%2990068-D

DO - 10.1016/0165-2478%2893%2990068-D

M3 - Journal article

C2 - 7688346

VL - 36

SP - 51

EP - 58

JO - Immunology Letters

JF - Immunology Letters

SN - 0165-2478

IS - 1

ER -