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Endothelial cell dysfunction in HIV infection.

A Lafeuillade1, M C Alessi, I Poizot-Martin

  • 1CISIH, Hôpital Salvator, Marseille, France.

Journal of Acquired Immune Deficiency Syndromes
|January 1, 1992
PubMed
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HIV infection alters blood clotting factors, with von Willebrand factor increasing and protein S decreasing as the disease progresses. These changes suggest endothelial cell damage and a potential hypercoagulable state in patients.

Area of Science:

  • Hematology
  • Infectious Diseases
  • Vascular Biology

Background:

  • HIV infection is associated with various clinical complications.
  • Endothelial cell dysfunction is increasingly recognized in chronic infections.
  • Hemostasis plays a critical role in disease progression and patient outcomes.

Purpose of the Study:

  • To investigate plasma levels of endothelial cell products involved in hemostasis among HIV-positive patients.
  • To correlate these levels with disease progression and immune status (CD4+ cell counts).
  • To explore potential links between HIV infection, endothelial cell damage, and hypercoagulability.

Main Methods:

  • Plasma samples were collected from 125 HIV-positive patients and 30 controls.
  • Levels of antigenic von Willebrand factor, tissue-type plasminogen activator, plasminogen activator inhibitor, and protein S (total and free) were measured.

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  • Statistical analyses were performed to correlate hemostatic markers with CD4+ cell counts and disease staging.

    • Main Results:

    • Antigenic von Willebrand factor significantly increased with HIV disease progression, correlating with CD4+ counts and beta-2 microglobulin.
    • Plasminogen activator inhibitor was elevated in all HIV-positive groups, irrespective of disease stage.
    • Total and free protein S levels were reduced in HIV-positive patients, indicating potential coagulation abnormalities.

    Conclusions:

    • HIV infection leads to significant alterations in hemostatic markers, including elevated von Willebrand factor and reduced protein S.
    • These hemostatic abnormalities suggest endothelial cell damage and a potential hypercoagulable state in HIV-positive individuals.
    • Further research is needed to elucidate the direct role of HIV in causing endothelial injury and subsequent hemostatic dysregulation.