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Related Experiment Videos

Current pathophysiological views on vibration-induced Raynaud's phenomenon.

Z Stoyneva1, M Lyapina, D Tzvetkov

  • 1Centre of Occupational Diseases, University Hospital St Ivan Rilsky, Sofia, Bulgaria. zlatka_stoyneva@yahoo.com

Cardiovascular Research
|March 6, 2003
PubMed
Summary

Vibration-induced Raynaud's phenomenon involves sympathetic hyperactivity, local vasodysregulation, and endothelial damage. These factors contribute to digital vasospasms and tissue damage in affected individuals.

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Area of Science:

  • Occupational Health
  • Vascular Medicine
  • Pathophysiology

Background:

  • Vibration-induced Raynaud's phenomenon (VIRP) is a multifactorial condition.
  • Autonomic dysfunction and sympathetic hyperactivity are implicated in its development.

Purpose of the Study:

  • To review and discuss current pathogenetic mechanisms of VIRP.
  • To explore the multifactorial etiology of vibration white finger.

Main Methods:

  • Review of contemporary pathogenetic views.
  • Discussion of physiological indicators of autonomic dysfunction.
  • Analysis of receptor and nerve ending dysfunction.
  • Assessment of endothelial damage and dysregulation.
  • Evaluation of vasoactive factor imbalances.

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  • Examination of hemostasis, fibrinolysis, hemorrheology, and blood cell activation.

    • Main Results:

    • Increased sympathetic nervous activity and local acral vasodysregulation are key factors.
    • Dysfunction in alpha(2)-receptors and reduced calcitonin gene-related peptide contribute to vasospasm.
    • Endothelial damage, elevated endothelin-1, and decreased thiol levels are observed.
    • Imbalances in vasoactive factors (e.g., endothelin, nitric oxide) and blood cell activation play a role.

    Conclusions:

    • VIRP results from a complex interplay of sympathetic, vascular, endothelial, and hematological factors.
    • Understanding these mechanisms is crucial for managing vibration white finger.
    • Further research into these pathways can inform preventative strategies and treatments.