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Complement System and Adhesion Molecule Skirmishes in Fabry Disease: Insights into Pathogenesis and Disease

Albert Frank Magnusen1, Manoj Kumar Pandey1,2

  • 1Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.

International Journal of Molecular Sciences
|November 27, 2024
PubMed

Insights

Fabry disease involves globotriaosylceramide buildup, activating the complement system. Targeting complement components C3a and C5a may reduce inflammation and improve outcomes for Fabry patients.

Area of Science:

  • Genetics and Molecular Biology
  • Immunology
  • Pathology

Background:

  • Fabry disease is an X-linked lysosomal storage disorder due to GLA gene mutations.
  • Accumulation of globotriaosylceramide (Gb3) and Lyso-Gb3 causes immune dysregulation and complement activation.
  • Elevated complement components (C3, C3a, C5a) correlate with endothelial dysfunction in Fabry disease.

Purpose of the Study:

  • To elucidate the role of the complement system in Fabry disease pathology.
  • To explore the impact of complement activation on vascular dysfunction and leukocyte recruitment.
  • To evaluate the therapeutic potential of targeting complement pathways in Fabry disease.

Main Methods:

  • Literature review of studies on Fabry disease, complement system, and vascular biology.
  • Analysis of complement component levels and their correlation with disease markers.
  • Examination of the effects of complement activation on endothelial cells and leukocyte adhesion molecules.

Main Results:

  • Complement activation via C3a and C5a exacerbates Fabry disease pathology.
  • Upregulation of adhesion molecules (VCAM1, ICAM1, PECAM1, CR3) promotes leukocyte recruitment.
  • Complement system activation contributes significantly to endothelial cell abnormalities and vascular dysfunction.

Conclusions:

  • The complement system plays a critical role in the pathogenesis of Fabry disease.
  • Targeting complement components (C3a, C5a) or their receptors (C3aR, C5aR1) offers a potential therapeutic strategy.
  • Inhibition of complement activation may reduce inflammation, mitigate tissue damage, and improve clinical outcomes in Fabry disease.

Keywords:
cell adhesion moleculescomplement-mediated injuryendothelial dysfunctionimmune cell infiltrationinflammatory cascade

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