Pharmacological Modulation of Injury-Induced Vascular Remodeling by Colchicine: An Integrated Experimental and...

Area of Science:

• Cardiovascular Research
• Pharmacology
• Molecular Biology

Background:

• Colchicine is an anti-inflammatory drug targeting microtubules, with potential cardiovascular applications.
• Its precise impact on vascular remodeling post-injury requires further elucidation.

Purpose of the Study:

• To investigate the effects of colchicine on vascular remodeling in a rat iliac artery injury model.
• To explore potential molecular mechanisms using in silico analyses.

Main Methods:

• A rat iliac artery clamp injury model was used with daily oral colchicine administration for 28 days.
• Histomorphometric, histopathological, and immunohistochemical analyses assessed vascular changes.
• Molecular docking and protein-protein interaction network analyses provided systems-level context.

Main Results:

• Colchicine significantly reduced intimal thickness, stenosis, and collagen deposition, improving the remodeling index.
• Medial thickness and circulating inflammatory cytokines (TNF-α, IL-1β) were not significantly altered.
• In silico analyses suggested interactions with β-tubulin, ADAM17, NLRP3, IKKβ, and RELA, implicating NF-κB and inflammasome pathways.

Conclusions:

• Colchicine attenuates injury-induced vascular remodeling in this rat model.
• Findings suggest a multi-target, inflammation-associated mechanism involving NF-κB and inflammasome pathways.
• In silico analyses support mechanistic insights but do not establish causality.