TGF-β1 Upregulation in the Aging Varicose Vein
- 27 February 2007
- journal article
- research article
- Published by S. Karger AG in Journal of Vascular Research
- Vol. 44 (3), 192-201
- https://doi.org/10.1159/000100375
Abstract
Although the etiology of venous insufficiency is not well understood, immune response and aging are beginning to emerge as contributing factors. Factors involved in tissue remodeling such as TGF-beta(1) also seem to play an important role in extracellular matrix production. The aim of this study was to explore the relationship between chronic venous insufficiency and TGF-beta(1) examining the latent/mature form of TGF-beta(1) and the presence of mast cells. Effects of age were also evaluated. Saphenous veins were obtained from patients subjected to aortocoronary bypass (controls) and undergoing varicose vein surgery. These were immunolabeled using anti-LAP TGF-beta(1)/anti-TGF-beta(1) antibodies and subjected to Western blot. Mast cell population was identified by metachromatic staining. Latent TGF-beta(1) was significantly reduced in varicose veins from older subjects. In contrast, smooth muscle cells obtained from the varicosities showed intense levels. Mature TGF-beta(1) significantly differed between healthy and varicose veins. No mature TGF-beta(1) was detected in the cell cultures. Mast cell number and degranulation were increased with aging and varicose disease, colocalizing with the mature form of TGF-beta(1). Aging and varicose pathology induce dysregulation of TGF-beta(1) that could play an important role in the fibrous process, representing the final stages of venous insufficiency.Keywords
This publication has 32 references indexed in Scilit:
- Involvement of furin-like proprotein convertases in the arterial response to injuryCardiovascular Research, 2005
- Overexpression of transforming growth factor–β1 correlates with increased synthesis of nitric oxide synthase in varicose veinsJournal of Vascular Surgery, 2005
- The effect of TGF-β receptor binding peptides on smooth muscle cellsBiochemical and Biophysical Research Communications, 2002
- Transforming growth factor-βs and CD105 expression in calcification and bone formation in human atherosclerotic lesionsClinical Research in Cardiology, 2001
- Mechanical Strain–Induced Extracellular Matrix Production by Human Vascular Smooth Muscle CellsHypertension, 2000
- Increased Flow and Shear Stress Enhance In Vivo Transforming Growth Factor-β1 After Experimental Arterial InjuryArteriosclerosis, Thrombosis, and Vascular Biology, 2000
- Increased mast cell infiltration in varicose veins of the lower limbs: A possible role in the development of varicesSurgery, 1996
- In Vivo Effect of TGF-β1Arteriosclerosis, Thrombosis, and Vascular Biology, 1995
- Lipopolysaccharide inhibits activation of latent transforming growth factor‐β in bovine endothelial cellsJournal of Cellular Physiology, 1995
- Analysis of the connective tissue matrix and proteolytic activity of primary varicose veinsJournal of Vascular Surgery, 1993