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Etienne H, Journé C, Rouchaud A, Senemaud J, Louedec L, Pellenc Q, Coscas R, Gouya L, Dupont S, Michel JB. Persistence of Intraluminal Thrombus Makes Saccular Aneurysm More Biologically Active than Fusiform in an Experimental Rat Model. J Vasc Res 2020; 57:164-176. [PMID: 32222706 DOI: 10.1159/000506159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 01/26/2020] [Indexed: 01/31/2023] Open
Abstract
INTRODUCTION Saccular aneurysms are thought to have a worse prognosis than fusiform aneurysms in humans, due to hemodynamic reasons. However, data comparing hemodynamic and biology in saccular and fusiform aneurysms are lacking. The main objective was to evaluate the impact of aneurysm morphology on intra-luminal thrombus (ILT) formation and activity. METHODS Forty Lewis rats were ran-domly divided into 2 groups of 20: "saccular" (Group A) and "fusiform" (Group B) aneurysms. Decellularized thoracic aortas from guinea pigs were xenografted to create saccular or fusiform aneurysms. Final imaging evaluation of the aneurysms was carried out during the third week, by quantitative Doppler ultrasound and magnetic resonance imaging. Assays of myeloperoxidase (MPO), platelet factor 4 (PF4), advanced oxidation protein products (AOPPs) iron and matrix metallopeptidase-9 (MMP-9) were performed as biological criteria. RESULTS Quantitatively, saccular aneurysms are characterized by a more thicker ILT, lower inflow velocities and more important relative backflow velocities as compared to fusiform aneurysms. Compared to fusiform, saccular aneurysms released significantly more MPO (p = 0.004), PF4 (p = 0.02), AOPPs (p < 0.002), iron (p < 0.0001) and MMP-9 (p < 0.04). CONCLUSION Experimental saccular and fusiform aneurysms show differential specific hemodynamics, which seem to impact the histology and the biology of the ILT in each type of aneurysm.
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Affiliation(s)
- Harry Etienne
- UMR 1148, Inserm-Denis Diderot University, Hôpital Xavier Bichat, Paris, France,
| | - Clément Journé
- UMR 1148, Inserm-Denis Diderot University, Hôpital Xavier Bichat, Paris, France.,UMS 34, Fédération de Recherche en Imagerie Multimodalités, Paris, France
| | - Aymeric Rouchaud
- Université Limoges, CNRS, XLIM, UMR 7252, Limoges, France.,Department of interventional neuroradiology, CHU Dupuytren, Limoges, France
| | - Jean Senemaud
- UMR 1148, Inserm-Denis Diderot University, Hôpital Xavier Bichat, Paris, France.,Department of Vascular, Thoracic Surgery and Lung Transplantation, Hôpital Xavier Bichat, Paris, France
| | - Liliane Louedec
- UMR 1148, Inserm-Denis Diderot University, Hôpital Xavier Bichat, Paris, France
| | - Quentin Pellenc
- UMR 1148, Inserm-Denis Diderot University, Hôpital Xavier Bichat, Paris, France.,Department of Vascular, Thoracic Surgery and Lung Transplantation, Hôpital Xavier Bichat, Paris, France
| | - Raphaël Coscas
- Department of Vascular Surgery, Ambroise Paré University Hospital, AP-HP, Boulogne-Billancourt, France
| | - Laurent Gouya
- Paris Diderot University, INSERM U1149, Hème, fer et pathologies inflammatoires, Assistance Publique des Hôpitaux de Paris, Hôpital Louis Mourier, Paris, France
| | - Sébastien Dupont
- UMR 1148, Inserm-Denis Diderot University, Hôpital Xavier Bichat, Paris, France
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