İnsan internal meme arter (İMA) Transplantasyon ve Stent: In-Stent Restenozis Geliştirme Eğitim Bir İnsan Modeli
Summary
This video shows a model to study the development of intimal hyperplasia after stent deployment using a human vessel (IMA) in an immunodeficient rat model.
Abstract
Preclinical in vivo research models to investigate pathobiological and pathophysiological processes in the development of intimal hyperplasia after vessel stenting are crucial for translational approaches1,2.
The commonly used animal models include mice, rats, rabbits, and pigs3-5. However, the translation of these models into clinical settings remains difficult, since those biological processes are already studied in animal vessels but never performed before in human research models6,7. In this video we demonstrate a new humanized model to overcome this translational gap. The shown procedure is reproducible, easy, and fast to perform and is suitable to study the development of intimal hyperplasia and the applicability of diverse stents.
This video shows how to perform the stent technique in human vessels followed by transplantation into immunodeficient rats, and identifies the origin of proliferating cells as human.
Protocol
Discussion
Although different in vivo research models are existing to investigate the development of intimal hyperplasia after stent placement, these models still facing translational hurdles to overcome. Furthermore, large animal models are expensive and special housing conditions as well as surgical equipment is not available for all laboratories.
Using a human IMA to study the development of human intimal proliferation and in-stent restenosis was studied before ex situ in organ …
Disclosures
The authors have nothing to disclose.
Acknowledgements
The authors thank Christiane Pahrmann for her contribution. Special thanks to Ethicon, Norderstedt, Hamburg (Germany) for providing the suture material.
Funding
Sonja Schrepfer has received a research grant from the Deutsche Forschungsgemeinschaft (DFG) (SCHR992/3 1 and SCHR992/4-1).] The work was supported by the ISHLT Shumway Career Development Grant 2010 and the Falk Research Funding (Stanford University).
Materials
| Name of the reagent | Company | Catalog number | Comments |
| 2 French Fogarty catheter | Baxter Healthcare, Deerfield, IL, USA | 120602F | |
| Yukon Stent | Translumina GmbH, Hechingen, Germany | Use the stent of your choice according to your study protocol | |
| RPMI media | Biochrom | Nr.F1275 | |
| heparin | Baxter | 2B0953 | |
| isoflurane | Abbot | B506 | |
| Provo-Iodine | Betadine Puredue Pharma | EAN:5995327165830 | |
| 80% ethanol | Geyer | ETV 80/0500 | |
| Micro clamp | Harvard Apparatus | PY2-61-0186 | |
| Sutures 8-0 | Johnson& Johnson, | 2808G | |
| Sutures 6-0 | Johnson& Johnson, | 1698 H | |
| Carprofen | Feizer Vet | PZN:0110208 | |
| Metamizol | Ratiopharm | ||
| Target retrieval solution, pH9 | Dako | S2368 | |
| Image-iT FX signal enhancer | Invitrogen | I36933 | |
| mouse monoclonal anti-GFP antibody | BD living colors | 632381 | |
| primary antibody diluent | Dako | S3022 | |
| goat-anti-mouse IgG, Alexa Fluor 488 | Invitrogen | A11017 | |
| secondary antibody diluent | Dako | S0809 | |
| rabbit polycolonal anti-smooth muscle α-actin | Abcam, | ab5694 | |
| goat-anti-rabbit IgG, Alexa Fluor 555 | Invitrogen | A21430 | |
| Prolong Gold antifade reagent | Invitrogen | P36930 |
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