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Successful arterial substitution with modified human umbilical vein
Annals of Surgery
|March 1, 1976
Summary
Modified human umbilical veins, reinforced with polyester mesh, show excellent patency and function as vascular grafts in baboons. This promising blood conduit avoids aneurysms and rejection, suggesting clinical applicability.
Area of Science:
- Biomaterials Science
- Vascular Surgery
- Tissue Engineering
Background:
- Development of synthetic vascular grafts remains a challenge.
- Umbilical veins offer a potential autologous source for vascular reconstruction.
- Need for durable, non-thrombogenic, and non-immunogenic vascular conduits.
Observation:
- Human umbilical veins were modified using dialdehyde starch or glutaraldehyde and reinforced with a polyester fiber mesh.
- Grafts were implanted in the aortoiliac position in baboons for up to 9 months.
- Histological analysis revealed a dense collagen layer and a distinct inner subintimal capsule.
Findings:
- Excellent graft patency and function were maintained throughout the study period.
- No instances of aneurysm formation or graft rejection were observed.
- The inflammatory response associated with the umbilical vein component was minimal.
Implications:
- Modified umbilical veins represent a promising biomaterial for vascular grafting.
- The structural reinforcement and tanning process enhance graft durability and biocompatibility.
- These findings support the potential clinical use of umbilical vein grafts in vascular surgery.