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CD73 is expressed on invading T lymphocytes in the inflamed peripheral nerve

Gerd Meyer Zu Hörste1, Jens Reiners, Helmar C Lehmann

  • 1Department of Neurology, Heinrich-Heinl University, Moorenstrasse 5, 40225 Düsseldorf, Germany.

Muscle & Nerve
|July 18, 2009
PubMed

Insights

CD73 enzyme expression was studied in inflamed human nerves. CD73 was found on T lymphocytes, suggesting its role in immune cell entry into the nervous system during inflammation.

Area of Science:

  • Immunology
  • Neuroscience
  • Cell Biology

Background:

  • CD73 is a cell surface enzyme crucial for immune and inflammatory responses.
  • It regulates adenosine-receptor-mediated signaling pathways.
  • Understanding CD73's role in neurological inflammation is vital.

Purpose of the Study:

  • To investigate the expression and cellular distribution of CD73 in inflamed human peripheral nerves.
  • To determine if CD73 expression differs between acute and chronic inflammatory polyneuropathies.

Main Methods:

  • Immunohistochemical analysis of inflamed human peripheral nerve tissue.
  • Staining for CD73 expression on lymphocytes and endothelial cells.
  • Comparison of CD73+ cell counts in acute versus chronic conditions.

Main Results:

  • CD73 was expressed on both CD4+ and CD8+ T lymphocytes in inflamed peripheral nerves.
  • No significant difference in CD73-expressing T lymphocyte numbers was observed between acute and chronic inflammatory polyneuropathies.
  • Peripheral nerve endothelial cells did not express CD73.

Conclusions:

  • CD73 is present on T lymphocytes within the inflamed human peripheral nerve.
  • These findings support a role for CD73 in facilitating lymphocyte infiltration into the nervous system during inflammatory conditions.

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