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Dysregulated apoptosis in primary varicose veins
E Ducasse1, K Giannakakis, J Chevalier
1Unit of Vascular Surgery, Clinic Umberto I, University "La Sapienza", Rome, Italy. eric.ducasse@online.fr
Programmed cell death, or apoptosis, is reduced in varicose veins. This cellular dysfunction, involving the intrinsic apoptotic pathway, may contribute to the development of primary varicose veins.
Area of Science:
- Vascular Biology
- Cellular Pathology
- Molecular Medicine
Background:
- Programmed cell death is essential for physiological processes.
- The role of apoptosis in primary varicose veins remains unclear.
- Investigating apoptosis mediators in varicose veins is crucial.
Purpose of the Study:
- To examine histological changes in human varicose veins.
- To quantify apoptosis in varicose and healthy veins.
- To assess the expression of intrinsic apoptotic pathway mediators (Bax and caspase 9).
Main Methods:
- Histological analysis of 23 varicose veins and 9 healthy control veins.
- Immunohistochemistry to detect apoptosis, Bax, and caspase 9 in the medial layer.
- Statistical comparison using the Mann-Whitney test.
Main Results:
- Varicose veins showed disorganized architecture with altered collagen and elastic fibers.
- Significantly lower levels of apoptosis markers (peroxidase in situ, Bax, caspase 9) were observed in varicose veins compared to controls.
- Apoptosis markers were markedly reduced in varicose vein tissue.
Conclusions:
- Apoptosis is downregulated in the medial layer of primary varicose veins.
- This dysregulation involves the intrinsic apoptotic pathway.
- Reduced apoptosis may be a contributing factor to the pathogenesis of primary varicose veins.
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