Decellularized vascular grafts

Cardiovascular disease is one of the main causes of mortality and morbidity worldwide. The “gold standard” for the replacement/repair of diseased blood vessels is substitution with autologous vessels. However, multiple surgical procedures limit the availability of autologous vessels, whereas synthetic grafts have been reported to demonstrate poor patency rates, especially for small-caliber vascular reconstructions. Decellularization of native vascular or non-vascular tissues for vascular scaffold development has gained significant attention in the past 20 years. A variety of decellularization techniques have been described and employed to achieve effective immunogenic agent removal from the developed vascular scaffold. At the same time, the decellularization must not impair the extracellular matrix (ECM) composition, structure, and mechanical properties of the graft in order to ensure long-term functionality in vivo. The aim of this chapter was to review the various decellularization treatments that have been reported in the literature for the development of decellularized vascular scaffolds

Characterization and plasticity of human fetal-derived cartilage cells: implications for skeletal tissue regeneration

Abstract of paper from TCES (Tissue and Cell Engineering Society) meeting in 2005. The ability of the skin to extend and recoil is mediated by an elastic fibre network comprising elastin molecules deposited on a microfibrillar scaffold. Studies have demonstrated reduced tensile strength in scar tissue following cutaneous wounding, possibly due to decreased amounts of elastic fibres1. The dermal component of artificial skin substitutes also lacks an organised elastic fibre network, which may contribute to excessive contraction and scarring post-grafting. This study aimed to document the temporal and spatial distribution of elastic fibres following incisional and excisional cutaneous wounding in mice