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The lymph node in experimental xanthomatosis.

P G Herman, I Yamamoto, H Z Mellins

    Lymphology
    |March 1, 1976
    PubMed
    Summary
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    Experimental xanthomatosis causes foam cells to progressively replace lymph node tissue. The lymph node

    Area of Science:

    • Immunology
    • Pathology
    • Vascular Biology

    Background:

    • Xanthomatosis is characterized by lipid accumulation.
    • Lymph node structure and function can be altered by disease processes.

    Purpose of the Study:

    • To investigate the histological changes in lymph nodes during experimental xanthomatosis.
    • To characterize the vascularization of xanthomata within lymph nodes.

    Main Methods:

    • Induction of experimental xanthomatosis in a model system.
    • Histological examination of lymph node tissue.
    • Immunohistochemical staining to identify cell types and vascular structures.

    Main Results:

    • Progressive replacement of lymphoid elements by foam cells, starting in the subcortex and extending to the cortex.

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  • Xanthomata exhibit high vascularity with a dense network of small, short capillaries.
  • Newly formed capillaries integrate into the existing lymph node vasculature without distorting larger vessels.

    • Conclusions:

    • Foam cell infiltration significantly alters lymph node architecture in experimental xanthomatosis.
    • The lymph node demonstrates a remarkable capacity to develop a rich vascular supply in response to significant tissue replacement.
    • Understanding these vascular adaptations is crucial for comprehending lymph node pathology in lipid storage disorders.