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Related Experiment Videos

Microcirculation and venous ulcers: a review.

Luigi Pascarella1, Geert W Schmid Schönbein, John J Bergan

  • 1Department of Bioengineering, Whitaker Institute of Biomedical Engineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, USA.

Annals of Vascular Surgery
|October 26, 2005
PubMed
Summary

Chronic venous insufficiency (CVI) involves skin inflammation and remodeling, leading to venous leg ulcers. Future therapies may target leukocyte activation to reduce inflammation and improve CVI outcomes.

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Area of Science:

  • Dermatology
  • Vascular Biology
  • Immunology

Background:

  • Chronic venous insufficiency (CVI) is characterized by skin lesions and ulceration.
  • Histological and immunocytochemical analyses suggest an inflammatory process underlies CVI.
  • The superficial vascular network is a primary target in the inflammatory reaction.

Purpose of the Study:

  • To explore the inflammatory mechanisms driving chronic venous insufficiency and venous leg ulcer formation.
  • To identify potential therapeutic targets for CVI by understanding the role of leukocyte activation.

Main Methods:

  • Histological and immunocytochemical analyses of venous leg ulcers.
  • Examination of hemodynamic forces (venous hypertension, stasis, shear stress) and their role in leukocyte activation.

Related Experiment Videos

  • Review of inflammatory mediators released during leukocyte activation.

    • Main Results:

    • Inflammatory processes lead to fibrosclerotic and liposclerotic remodeling of skin and subcutaneous tissue.
    • Leukocyte activation, involving integrin expression and release of inflammatory molecules, is central to CVI.
    • Hemodynamic forces contribute significantly to leukocyte activation and subsequent CVI manifestations like venous dermatitis and ulceration.

    Conclusions:

    • Venous leg ulcer formation is linked to a self-perpetuating inflammatory response.
    • Targeting leukocyte activation presents a promising therapeutic strategy for managing CVI.
    • Pentoxifylline and flavonoids are being investigated for their anti-inflammatory effects in CVI treatment.