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Circulating adhesion molecules in sarcoidosis

A S Hamblin1, Z Shakoor, P Kapahi

  • 1Department of Immunology, United Medical School, St Thomas' Hospital, London, UK.

Clinical and Experimental Immunology
|May 1, 1994
PubMed
Summary
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Sarcoidosis patients show significantly elevated E-selectin levels, indicating endothelial cell activation. This finding adds to our understanding of sarcoidosis pathology and potential biomarkers.

Area of Science:

  • Immunology
  • Cell Biology
  • Pathology

Background:

  • Sarcoidosis is an inflammatory disease of unknown cause.
  • It features non-caseating granulomas and systemic abnormalities.
  • Previous research indicated increased CD11/CD18 integrin expression in sarcoidosis patients.

Purpose of the Study:

  • To investigate serum levels of adhesion molecules in sarcoidosis.
  • To assess endothelial cell activation in sarcoidosis patients.

Main Methods:

  • Serum samples from 23 sarcoidosis patients and 14 healthy controls were analyzed.
  • Antigen capture sandwich ELISAs were used to measure intercellular adhesion molecule-1 (ICAM-1), E-selectin, and vascular cell adhesion molecule-1 (VCAM-1).

Main Results:

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  • Median E-selectin levels were almost three times higher in sarcoidosis patients compared to controls (P < 0.0001).
  • Intercellular adhesion molecule-1 (ICAM-1) levels were slightly elevated, while vascular cell adhesion molecule-1 (VCAM-1) levels showed no significant difference.
  • These findings suggest increased endothelial cell activation in sarcoidosis.

Conclusions:

  • Elevated circulating E-selectin is a significant feature of sarcoidosis pathology.
  • Endothelial cell activation and E-selectin shedding are implicated in the disease process.
  • E-selectin may serve as a potential biomarker for sarcoidosis.