Volume 104, Issue 1 pp. 227-238
Original Article

In vivo monitoring of the inflammatory response in a stented mouse aorta model

Konstantinos K. Kapnisis

Corresponding Author

Konstantinos K. Kapnisis

Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol, 3036 Cyprus

Correspondence to: K. K. Kapnisis, Cyprus University of Technology, 45 Kitiou Kyprianou Str., Dorothea Bldg. 5th Floor, Lemesos 3041, Cyprus; e-mail: [email protected]Search for more papers by this author
Costas M. Pitsillides

Costas M. Pitsillides

Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol, 3036 Cyprus

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Marianna S. Prokopi

Marianna S. Prokopi

Trojantec Ltd., Nicosia, 2006 Cyprus

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George Lapathitis

George Lapathitis

Neurology Clinic E, Cyprus Institute of Neurology and Genetics, Nicosia, 2370 Cyprus

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Christos Karaiskos

Christos Karaiskos

Neurology Clinic E, Cyprus Institute of Neurology and Genetics, Nicosia, 2370 Cyprus

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Polyvios C. Eleftheriou

Polyvios C. Eleftheriou

Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol, 3036 Cyprus

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Brigitta C. Brott

Brigitta C. Brott

Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, 35294-0111

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Peter G. Anderson

Peter G. Anderson

Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, 35294-0111

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Jack E. Lemons

Jack E. Lemons

Department of Prosthodontics, University of Alabama at Birmingham, Birmingham, Alabama, 35294-0111

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Andreas S. Anayiotos

Andreas S. Anayiotos

Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol, 3036 Cyprus

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First published: 12 September 2015
Citations: 11

Abstract

The popularity of vascular stents continues to increase for a variety of applications, including coronary, lower limb, renal, carotid, and neurovascular disorders. However, their clinical effectiveness is hindered by numerous postdeployment complications, which may stimulate inflammatory and fibrotic reactions. The purpose of this study was to evaluate the vessel inflammatory response via in vivo imaging in a mouse stent implantation model. Corroded and noncorroded self-expanding miniature nitinol stents were implanted in mice abdominal aortas, and novel in vivo imaging techniques were used to assess trafficking and accumulation of fluorescent donor monocytes as well as cellular proliferation at the implantation site. Monocytes were quantitatively tracked in vivo and found to rapidly clear from circulation within hours after injection. Differences were found between the test groups with respect to the numbers of recruited monocytes and the intensity of the resulting fluorescent signal. Image analysis also revealed a subtle increase in matrix metalloproteinase activity in corroded compared with the normal stented aortas. In conclusion, this study has been successful in developing a murine stent inflammation model and applying novel in vivo imaging tools and methods to monitor the complex biological processes of the host vascular wall response. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 227–238, 2016.

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