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Malignant lymphomas associated with immunodeficiency states.

J J Biemer1

  • 1St. Joseph's Hospital, Tampa, FL 33607.

Annals of Clinical and Laboratory Science
|May 1, 1990
PubMed
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Malignant lymphomas frequently occur in immunodeficient patients, often presenting aggressively and outside lymph nodes. Epstein-Barr virus (EBV) infection is linked to B-cell proliferation, potentially leading to lymphoma development.

Area of Science:

  • Immunology
  • Oncology
  • Virology

Background:

  • Immunodeficient patients exhibit an increased incidence of malignant lymphomas, regardless of the cause (natural, acquired, or iatrogenic).
  • A key characteristic of these states is impaired T-cell cytotoxic function, creating an environment conducive to lymphoproliferation.
  • Malignant lymphomas in this context often display rapid onset, aggressive clinical behavior, and extranodal presentation, particularly in the CNS and GI tract.

Purpose of the Study:

  • To explore the characteristics and potential etiologies of malignant lymphomas arising in immunodeficient individuals.
  • To investigate the role of Epstein-Barr virus (EBV) and other molecular factors in the pathogenesis of these lymphomas.
  • To understand the transition from polyclonal B-cell proliferation to monoclonal malignant transformation.

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Main Methods:

  • Review of clinical and pathological features of lymphomas in immunodeficient patients.
  • Analysis of the association between Epstein-Barr virus (EBV) infection and lymphoma development.
  • Molecular investigation including DNA probes, oncogene analysis (c-myc), and viral gene expression (EBV nuclear and latent membrane proteins).

Main Results:

  • Lymphomas are predominantly of B-cell origin, often Burkitt-like or diffuse large cell type.
  • A strong correlation exists between preceding EBV infection and marked B-cell lymphoproliferation.
  • The process evolves from polyclonal to oligoclonal and potentially monoclonal B-cell populations, with evidence of genetic alterations and oncogene activation.

Conclusions:

  • Epstein-Barr virus (EBV) is strongly implicated in the pathogenesis of lymphomas in immunodeficient patients, particularly those with acquired immunodeficiency syndrome (AIDS).
  • The development of lymphoma involves a transition from EBV-driven polyclonal B-cell proliferation to a malignant monoclonal clone, potentially influenced by genetic alterations like c-myc activation.
  • Further research into molecular biology is necessary to elucidate the roles of other viruses and oncogenes in these lymphomas.