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Identifying Dysregulated Genes Induced by Kaposi's Sarcoma-associated Herpesvirus (KSHV)
07:02

Identifying Dysregulated Genes Induced by Kaposi's Sarcoma-associated Herpesvirus (KSHV)

Published on: September 14, 2010

Kaposi's sarcoma in homosexual men. A seroepidemiologic case-control study

M Marmor, A E Friedman-Kien, S Zolla-Pazner

    Annals of Internal Medicine
    |June 1, 1984
    PubMed

    Insights

    This study found that Kaposi's sarcoma in homosexual men is linked to lower T-helper/T-suppressor cell ratios and higher cytomegalovirus titers. Certain sexual practices and HLA-DR5 positivity were also associated with increased risk and disease presentation.

    Area of Science:

    • Immunology
    • Virology
    • Epidemiology

    Background:

    • Kaposi's sarcoma (KS) is an opportunistic infection often associated with acquired immunodeficiency syndrome (AIDS).
    • Understanding risk factors and immunological markers in homosexual men with KS is crucial for early detection and management.

    Purpose of the Study:

    • To compare immunological profiles and identify risk factors for Kaposi's sarcoma in homosexual men with AIDS.
    • To investigate the association between specific sexual behaviors, viral infections, and immune status in patients with KS.

    Main Methods:

    • Comparative analysis of 20 male homosexuals with KS and 40 matched controls.
    • Assessment of T-cell subsets (OKT4/OKT8 ratios), immunoglobulin G (IgG) levels, and antibody titers to cytomegalovirus (CMV) and Epstein-Barr virus (EBV).
    • Logistic regression analysis to determine relative risks for KS based on sexual practices and serological markers.

    Main Results:

    • Patients with KS exhibited lower OKT4/OKT8 ratios, primarily due to reduced OKT4 cell counts.
    • Elevated serum IgG and CMV antibody titers were observed in KS patients compared to controls, with lower EBV antibody titers.
    • Increased risk of KS was associated with receptive anal-genital intercourse frequency, "fisting," and CMV antibody titers.
    • CMV titers inversely correlated with OKT4 cell counts in controls.
    • HLA-DR5-positive patients showed higher OKT4 cell concentrations at diagnosis and potentially milder immunodeficiency.

    Conclusions:

    • Immune dysregulation, characterized by reduced T-helper cells and elevated CMV titers, is strongly associated with Kaposi's sarcoma in homosexual men.
    • Specific sexual behaviors and CMV infection are significant risk factors for KS development.
    • The HLA-DR5 antigen may influence the degree of immunodeficiency and disease presentation in patients with Kaposi's sarcoma.

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