ArticleCardiovascular research2024
Inhibition of endothelial-to-mesenchymal transition in a large animal preclinical arteriovenous fistula model leads to improved remodelling and reduced stenosis.
Article in Cardiovascular research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- A Vein Attempt? Experimental Models for Arteriovenous Fistula Research.Cardiovascular engineering and technology · 2026Review
- Analysis of risk factors associated with intimal hyperplasia in arteriovenous fistulas among patients undergoing hemodialysis.Medicine · 2026Observational
- The impact of inflammation, neuromodulation, and gut microbiota on developing cardiac fibrosis and hypertension.Cardiovascular research · 2026Review
- YBX1/PPIB axis promotes post-maturation arteriovenous fistula stenosis via enhancing endothelial to mesenchymal transition.Scientific reports · 2026Article
- A Biphasic Effect of Alcohol on Endothelial Plasticity Through Regulation of Endothelial-to-Mesenchymal Transition.bioRxiv : the preprint server for biology · 2026Article
- Endothelial to mesenchymal transition in cardiovascular diseases: molecular insights and clinical perspectives.European heart journal · 2026Review
- A Distinct miRNA Profile in Intimal Hyperplasia of Failed Arteriovenous Fistulas Reveals Key Pathogenic Pathways.Biomolecules · 2025Article
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21 authors.
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Abstract
aimsVein grafts are used for many indications, including bypass graft surgery and arteriovenous fistula (AVF) formation. However, patency following vein grafting or AVF formation is suboptimal for various reasons, including thrombosis, neointimal hyperplasia, and adverse remodelling. Recently, endothelial-to-mesenchymal transition (EndMT) was found to contribute to neointimal hyperplasia in mouse vein grafts. We aimed to evaluate the clinical potential of inhibiting EndMT and developed the first dedicated preclinical model to study the efficacy of local EndMT inhibition immediately prior to AVF creation. METHODS AND
resultsWe first undertook pilot studies to optimize the creation of a femoral AVF in pigs and verify that EndMT contributes to neointimal formation. We then developed a method to achieve local in vivo SMAD3 knockdown by dwelling a lentiviral construct containing SMAD3 shRNA in the femoral vein prior to AVF creation. Next, in Phase 1, six pigs were randomized to SMAD3 knockdown or control lentivirus to evaluate the effectiveness of SMAD3 knockdown and EndMT inhibition 8 days after AVF creation. In Phase 2, 16 pigs were randomized to SMAD3 knockdown or control lentivirus and were evaluated to assess longer-term effects on AVF diameter, patency, and related measures at 30 days after AVF creation. In Phase 1, compared with controls, SMAD3 knockdown achieved a 75% reduction in the proportion of CD31+ endothelial cells co-expressing SMAD3 (P < 0.001) and also a significant reduction in the extent of EndMT (P < 0.05). In Phase 2, compared with controls, SMAD3 knockdown was associated with an increase in the minimum diameter of the venous limb of the AVF (1.56 ± 1.66 vs. 4.26 ± 1.71 mm, P < 0.01) and a reduced degree of stenosis (P < 0.01). Consistent with this, neointimal thickness was reduced in the SMAD3 knockdown group (0.88 ± 0.51 vs. 0.45 ± 0.19 mm, P < 0.05). Furthermore, endothelial integrity (the proportion of luminal cells expressing endothelial markers) was improved in the SMAD3 knockdown group (P < 0.05).
conclusionEndMT inhibition in a preclinical AVF model by local SMAD3 knockdown using gene therapy led to reduced neointimal hyperplasia, increased endothelialization, and a reduction in the degree of AVF stenosis. This provides important proof of concept to pursue this approach as a clinical strategy to improve the patency of AVFs and other vein grafts.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.