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[Microchimera. New thought process for pathogenesis of systemic scleroderma]

U F Haustein1

  • 1Klinik und Poliklinik für Hautkrankheiten, Universität Leipzig.

Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
|April 1, 2000
PubMed

Insights

Persistent fetal cells in mothers may cause systemic sclerosis (SSc). This microchimerism, where fetal cells enter the mother, could trigger an immune response leading to SSc development in susceptible individuals.

Area of Science:

  • Immunology
  • Genetics
  • Obstetrics

Background:

  • Cellular microchimerism involves fetal cells persisting in the maternal body.
  • Human Leukocyte Antigen (HLA) class II compatibility facilitates fetal cell survival in mothers.
  • Systemic sclerosis (SSc) is a complex autoimmune disease with unknown pathogenesis.

Purpose of the Study:

  • To investigate the role of persistent cellular microchimerism in the pathogenesis of systemic sclerosis (SSc).
  • To explore the potential mechanism of fetal anti-maternal Graft-versus-host-like response in SSc development.

Main Methods:

  • Detection of fetal cells in maternal circulation and affected skin tissue using Y chromosome-specific DNA sequences.
  • Analysis of fetal CD3-positive T-cells in the maternal circulation of female SSc patients.

Main Results:

  • Evidence of persistent fetal microchimerism, including fetal CD3-positive T-cells and other fetal cells, was found in female SSc patients.
  • Fetal cells were identified in both the maternal circulation and affected skin tissue of SSc patients.

Conclusions:

  • Persistent cellular microchimerism is implicated in the pathogenesis of systemic sclerosis (SSc).
  • A fetal anti-maternal Graft-versus-host-like immune response initiated by microchimeric cells may contribute to SSc development.

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