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Curvilinear membranous formations in lymph node cells of an African AIDS patient with tuberculosis

Karl-Horst Marquart1

  • 1Institute of Molecular Virology, GSF-National Research Center for Environment and Health, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany.

Ultrastructural Pathology
|January 30, 2003
PubMed

Insights

Electron microscopy revealed unique curvilinear membranous formations (CMF) in lymph node cells of an AIDS patient with tuberculosis. The origin of these structures in relation to HIV infection remains unclear.

Area of Science:

  • Cell biology
  • Virology
  • Pathology

Background:

  • Investigated lymph node tissue from an African patient diagnosed with Acquired Immunodeficiency Syndrome (AIDS) and tuberculosis.
  • Utilized electron microscopy for high-resolution examination of cellular structures.

Observation:

  • Identified a distinctive cytoplasmic structure within histiocytic cells.
  • This structure comprised a collection of convoluted, folded curvilinear membranes (CMF).
  • CMF appeared as C-shaped, U-shaped, and S-shaped profiles depending on the section plane.

Findings:

  • CMF were composed of two parallel unit membranes with an electron-lucent space.
  • Observed occasional continuity between CMF and rough-surfaced endoplasmic reticulum.
  • Noted electron-dense areas between CMF, sometimes forming star-like configurations.

Implications:

  • The precise role of Human Immunodeficiency Virus (HIV) infection in the formation of CMF requires further investigation.
  • These findings may offer new insights into cellularpathology associated with complex infections.
  • Further research is needed to elucidate the function and origin of these unique membranous structures.

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