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Multidetector computed tomographic angiography evaluation of micropig major systemic vessels for xenotransplantation
Jung Min Ryu1, Woong Yoon, Jae Hong Park
1College of Veterinary Medicine, Biotherapy Human Resources Center, Chonnam National University, Gwangju 500-757, Korea.
Abstract:
Due primarily to the increasing shortage of allogeneic donor organs, xenotransplantation has become the focus of a growing field of research. Currently, micropigs are the most suitable donor animal for humans. However, no standard method has been developed to evaluate the systemic vascular anatomy of micropigs and standard reference values to aid in the selection of normal healthy animals as potential organ donors are lacking. Using 64-channel multidetector row computed tomographic angiography (MDCTA), we evaluated morphological features of the major systemic vessels in micropigs and compared our results to published human data. The main vasculature of the animals was similar to that of humans, except for the iliac arterial system. However, diameters of the major systemic vessels were significantly different between micropigs and humans. Specifically, the diameter of the aortic arch, abdominal aorta, external iliac artery, and femoral artery, were measured as 1.50 ± 0.07 cm, 0.85 ± 0.06 cm, 0.52 ± 0.05 cm, and 0.48 ± 0.05 cm, respectively, in the micropigs. This MDCTA data for micropig major systemic vessels can be used as standard reference values for xenotransplantation studies. The use of 64-channel MDCTA enables accurate evaluation of the major systemic vasculature in micropigs.
Insights
Xenotransplantation research uses micropigs as donors. This study established standard vascular reference values for micropigs using multidetector row computed tomographic angiography (MDCTA), aiding donor selection for organ transplantation.
Area of Science:
- Xenotransplantation research
- Comparative anatomy
- Medical imaging
Background:
- Growing shortage of allogeneic donor organs drives xenotransplantation research.
- Micropigs are considered suitable organ donors for humans.
- Lack of standardized methods for evaluating micropig vascular anatomy hinders donor selection.
Purpose of the Study:
- To evaluate the systemic vascular anatomy of micropigs.
- To establish standard reference values for micropig vasculature.
- To compare micropig vasculature to human data for xenotransplantation.
Main Methods:
- Utilized 64-channel multidetector row computed tomographic angiography (MDCTA).
- Assessed morphological features of major systemic vessels in micropigs.
- Compared quantitative vascular data with published human data.
Main Results:
- Micropig vasculature is largely similar to humans, with exceptions in the iliac arterial system.
- Significant differences in major systemic vessel diameters were observed between micropigs and humans.
- Specific measurements for aortic arch, abdominal aorta, external iliac artery, and femoral artery in micropigs were recorded.
Conclusions:
- MDCTA provides accurate evaluation of micropig systemic vasculature.
- Established reference values are crucial for selecting healthy micropig donors in xenotransplantation.
- This data supports the advancement of xenotransplantation as a viable solution for organ shortages.
