Abstract
Introduction
Varicose veins affect one-third of the adult population in western countries, but their pathogenesis is incompletely characterized. One of the most controversial issues is the role of inflammation. It is well known that inflammation involves an increased expression/activity of inflammatory mediators.
Objective
The aim of this study was to investigate the presence or absence of mediators of inflammation in varicose as compared to healthy veins.
Methods and results
Using immunohistofluorescence on varicose and healthy veins, we investigated the presence of inflammatory cells. They were not detectable. Venous wall C-reactive protein (CRP), fibrinogen (EIA) and pentraxin-3 (Western blot) content were measured. CRP was significantly lower in varicose veins, but no difference was found for fibrinogen or pentraxin-3 between varicose and healthy veins. No difference was observed for enzymes involved in inflammation and responsible for arachidonic acid metabolism such as the acute phase reactant secreted phospholipase A2-IIA and cyclooxygenase-2, as determined in varicose and healthy veins by Western blot and real-time qRT-PCR.
Conclusions
Our experiments demonstrate no increase in the presence of mediators of inflammation in varicose as compared to healthy veins, suggesting that inflammation may not be an important contributor to the pathogenesis of varicose veins.
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Acknowledgments
We would like to thank Alberto Mantovani (Istituto Clinico Humanitas; Milan, Italy) for giving us the PTX-3 antibody, Dr Nadir Cheurfa (Inserm U698; Paris, France) and Tariya Zaoui (CHU X. Bichat; Paris, France) for their help for facilitating access to vascular preparations. This work was supported by National Institute for Health and Medical Research.
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Gomez, I., Benyahia, C., Le Dall, J. et al. Absence of inflammatory conditions in human varicose saphenous veins. Inflamm. Res. 62, 299–308 (2013). https://doi.org/10.1007/s00011-012-0578-8
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DOI: https://doi.org/10.1007/s00011-012-0578-8