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[Expression of Fas-antigen on T cells in multiple sclerosis]

H Tanaka1, K Ota, M Ikusaka

  • 1Department of Neurology, Tokyo Women's Medical College.

Rinsho Shinkeigaku = Clinical Neurology
|March 1, 1995
PubMed

Insights

T cells in multiple sclerosis (MS) patients show higher Fas antigen expression compared to healthy individuals. This suggests increased T cell apoptosis in MS, particularly within the cerebrospinal fluid (CSF).

Area of Science:

  • Immunology
  • Neuroscience
  • Cell Biology

Background:

  • Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system.
  • T cell activation and apoptosis are implicated in the pathogenesis of MS.
  • Fas antigen plays a critical role in initiating programmed cell death (apoptosis).

Purpose of the Study:

  • To investigate the expression of Fas antigen and T cell activation markers in patients with multiple sclerosis.
  • To compare these markers in peripheral blood and cerebrospinal fluid (CSF).

Main Methods:

  • Flow cytometry was used to quantify Fas antigen and activation markers (HLA-DR, CD69) on T cells.
  • Analysis was performed on peripheral blood and CSF samples from 14 untreated MS patients and healthy controls.

Main Results:

  • T cells from untreated MS patients exhibited a statistically significant higher percentage of Fas antigen expression (29.7%) compared to healthy controls (17.7%).
  • No significant differences were observed in peripheral blood T cell activation markers between MS patients and controls.
  • Fas antigen and activation markers tended to be higher in the CSF of MS patients compared to their peripheral blood.

Conclusions:

  • Elevated Fas antigen expression on T cells in MS patients suggests increased susceptibility to apoptosis.
  • Higher expression rates in CSF may indicate localized T cell activation and apoptosis within the central nervous system.
  • These findings contribute to understanding T cell dynamics in multiple sclerosis pathogenesis.

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