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CardioVascular and Interventional Radiology

, Volume 36, Issue 5, pp 1364–1370 | Cite as

Is a Swine Model of Arteriovenous Malformation Suitable for Human Extracranial Arteriovenous Malformation? A Preliminary Study

  • Ming-ming LvEmail author
  • Xin-dong Fan
  • Li-xin Su
Laboratory Investigation

Abstract

Objective

A chronic arteriovenous malformation (AVM) model using the swine retia mirabilia (RMB) was developed and compared with the human extracranial AVM (EAVM) both in hemodynamics and pathology, to see if this brain AVM model can be used as an EAVM model.

Methods

We created an arteriovenous fistula between the common carotid artery and the external jugular vein in eight animals by using end-to-end anastomosis. All animals were sacrificed 1 month after surgery, and the bilateral retia were obtained at autopsy and performed hematoxylin and eosin staining and immunohistochemistry. Pre- and postsurgical hemodynamic evaluations also were conducted. Then, the blood flow and histological changes of the animal model were compared with human EAVM.

Results

The angiography after operation showed that the blood flow, like human EAVM, flowed from the feeding artery, via the nidus, drained to the draining vein. Microscopic examination showed dilated lumina and disrupted internal elastic lamina in both RMB of model and nidus of human EAVM, but the thickness of vessel wall had significant difference. Immunohistochemical reactivity for smooth muscle actin, angiopoietin 1, and angiopoietin 2 were similar in chronic model nidus microvessels and human EAVM, whereas vascular endothelial growth factor was significant difference between human EAVM and RMB of model.

Conclusions

The AVM model described here is similar to human EAVM in hemodynamics and immunohistochemical features, but there are still some differences in anatomy and pathogenetic mechanism. Further study is needed to evaluate the applicability and efficacy of this model.

Keywords

Arteriovenous malformation Rete mirabile Animal model Immunohistochemistry 

Notes

Acknowledgments

This work was supported by National Natural Science Foundation of China (Grant No. 81071243).

Conflict of interest

The authors (Mingming Lv, Xindong Fan, Lixin Su) declare no conflicts of interest.

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Copyright information

© Springer Science+Business Media New York and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2013

Authors and Affiliations

  1. 1.Department of Oral & Maxillofacial Surgery, Shanghai Key Laboratory of StomatologyNinth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghaiPeople’s Republic of China
  2. 2.Department of RadiologyNinth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghaiPeople’s Republic of China

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