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Published in: Acta Neurochirurgica 6/2021

01-06-2021 | Stroke | Original Article - Vascular Neurosurgery - Ischemia

Dilated microvessel with endothelial cell proliferation involves intraplaque hemorrhage in unstable carotid plaque

Authors: Daina Kashiwazaki, Shusuke Yamamoto, Naoki Akioka, Emiko Hori, Takashi Shibata, Naoya Kuwayama, Kyo Noguchi, Satoshi Kuroda

Published in: Acta Neurochirurgica | Issue 6/2021

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Abstract

Background

The purpose of the present study was to clarify the characteristics of endothelial cell (EC) proliferation in intraplaque microvessels in vulnerable plaques and impact on clinical results.

Methods

The present study included 76 patients who underwent carotid endarterectomy. Patients were classified into three groups based on their symptoms: asymptomatic, symptomatic without recurrent ischemic event, and symptomatic with recurrent ischemic event. MR plaque imaging was performed and surgical specimens underwent immunohistochemical analysis. The number of CD31+ microvessels, and Ki67+ and CD105+ ECs in the carotid plaques was quantified, as measurements of maximum CD31+ microvessel diameter.

Results

MR plaque imaging yielded 41 subjects (54.0%) diagnosed with plaque with intraplaque hemorrhage (IPH), 14 subjects (18.4%) diagnosed with fibrous plaques, and 21 (27.6%) subjects diagnosed with lipid-rich plaques. The average largest diameter of microvessel in fibrous plaques, lipid-rich plaques, and plaque with IPH was 12.7 ± 4.1 μm, 31.3 ± 9.3 μm, and 56.4 ± 10.0 μm, respectively (p < 0.01). Dilated microvessels (>40 μm) were observed in 9.6% of plaques with IPH but only in 2.8% of lipid-rich plaques and 0% of fibrous plaques (p < 0.01). Ki67+/CD31+ ECs were identified in 2.8 ± 1.2% of fibrous plaques, 9.6 ± 6.9% of lipid-rich plaques, and in 19.5 ± 5.9% of plaques with IPH (p < 0.01). The average largest diameter of microvessels in the asymptomatic group was 17.1 ± 8.7 μm, 32.3 ± 10.8 μm in the symptomatic without recurrence group, and 55.2 ± 13.2 μm in the symptomatic with recurrence group (p < 0.01).

Conclusion

Dilated microvessels with proliferative ECs may play a key role in IPH pathogenesis. Furthermore, dilated microvessels are likely related to clinical onset and the recurrence of ischemic events. The purpose of the present study was to clarify the characteristics of EC proliferation in intraplaque microvessels in vulnerable plaques and their impact on clinical results, focusing on dilated intraplaque microvessels.
Literature
5.
go back to reference Cheifetz S, Bellon T, Cales C, Vera S, Bernabeu C, Massague J, Letarte M (1992) Endoglin is a component of the transforming growth factor-beta receptor system in human endothelial cells. J Biol Chem 267:19027–19030CrossRef Cheifetz S, Bellon T, Cales C, Vera S, Bernabeu C, Massague J, Letarte M (1992) Endoglin is a component of the transforming growth factor-beta receptor system in human endothelial cells. J Biol Chem 267:19027–19030CrossRef
12.
go back to reference Kelly PJ, Camps-Renom P, Giannotti N, Marti-Fabregas J, Murphy S, McNulty J, Barry M, Barry P, Calvet D, Coutts SB, Cronin S, Delgado-Mederos R, Dolan E, Fernandez-Leon A, Foley S, Harbison J, Horgan G, Kavanagh E, Marnane M, McDonnell C, O'Donohoe M, Sharma V, Walsh C, Williams D, O'Connell M (2019) Carotid plaque inflammation imaged by (18)F-fluorodeoxyglucose positron emission tomography and risk of early recurrent stroke. Stroke 50:1766–1773. https://doi.org/10.1161/STROKEAHA.119.025422CrossRefPubMed Kelly PJ, Camps-Renom P, Giannotti N, Marti-Fabregas J, Murphy S, McNulty J, Barry M, Barry P, Calvet D, Coutts SB, Cronin S, Delgado-Mederos R, Dolan E, Fernandez-Leon A, Foley S, Harbison J, Horgan G, Kavanagh E, Marnane M, McDonnell C, O'Donohoe M, Sharma V, Walsh C, Williams D, O'Connell M (2019) Carotid plaque inflammation imaged by (18)F-fluorodeoxyglucose positron emission tomography and risk of early recurrent stroke. Stroke 50:1766–1773. https://​doi.​org/​10.​1161/​STROKEAHA.​119.​025422CrossRefPubMed
13.
go back to reference Leroyer AS, Rautou PE, Silvestre JS, Castier Y, Leseche G, Devue C, Duriez M, Brandes RP, Lutgens E, Tedgui A, Boulanger CM (2008) CD40 ligand+ microparticles from human atherosclerotic plaques stimulate endothelial proliferation and angiogenesis a potential mechanism for intraplaque neovascularization. J Am Coll Cardiol 52:1302–1311. https://doi.org/10.1016/j.jacc.2008.07.032CrossRefPubMed Leroyer AS, Rautou PE, Silvestre JS, Castier Y, Leseche G, Devue C, Duriez M, Brandes RP, Lutgens E, Tedgui A, Boulanger CM (2008) CD40 ligand+ microparticles from human atherosclerotic plaques stimulate endothelial proliferation and angiogenesis a potential mechanism for intraplaque neovascularization. J Am Coll Cardiol 52:1302–1311. https://​doi.​org/​10.​1016/​j.​jacc.​2008.​07.​032CrossRefPubMed
25.
29.
go back to reference Stary HC, Chandler AB, Dinsmore RE, Fuster V, Glagov S, Insull W Jr, Rosenfeld ME, Schwartz CJ, Wagner WD, Wissler RW (1995) A definition of advanced types of atherosclerotic lesions and a histological classification of atherosclerosis. A report from the Committee on Vascular Lesions of the Council on Arteriosclerosis, American Heart Association. Circulation 92:1355–1374. https://doi.org/10.1161/01.cir.92.5.1355CrossRefPubMed Stary HC, Chandler AB, Dinsmore RE, Fuster V, Glagov S, Insull W Jr, Rosenfeld ME, Schwartz CJ, Wagner WD, Wissler RW (1995) A definition of advanced types of atherosclerotic lesions and a histological classification of atherosclerosis. A report from the Committee on Vascular Lesions of the Council on Arteriosclerosis, American Heart Association. Circulation 92:1355–1374. https://​doi.​org/​10.​1161/​01.​cir.​92.​5.​1355CrossRefPubMed
32.
go back to reference Xu Y, Yuan C, Zhou Z, He L, Mi D, Li R, Cui Y, Wang Y, Wang Y, Liu G, Zheng Z, Zhao X (2016) Co-existing intracranial and extracranial carotid artery atherosclerotic plaques and recurrent stroke risk: a three-dimensional multicontrast cardiovascular magnetic resonance study. J Cardiovasc Magnetic Resonance 18:90. https://doi.org/10.1186/s12968-016-0309-3CrossRef Xu Y, Yuan C, Zhou Z, He L, Mi D, Li R, Cui Y, Wang Y, Wang Y, Liu G, Zheng Z, Zhao X (2016) Co-existing intracranial and extracranial carotid artery atherosclerotic plaques and recurrent stroke risk: a three-dimensional multicontrast cardiovascular magnetic resonance study. J Cardiovasc Magnetic Resonance 18:90. https://​doi.​org/​10.​1186/​s12968-016-0309-3CrossRef
33.
Metadata
Title
Dilated microvessel with endothelial cell proliferation involves intraplaque hemorrhage in unstable carotid plaque
Authors
Daina Kashiwazaki
Shusuke Yamamoto
Naoki Akioka
Emiko Hori
Takashi Shibata
Naoya Kuwayama
Kyo Noguchi
Satoshi Kuroda
Publication date
01-06-2021
Publisher
Springer Vienna
Published in
Acta Neurochirurgica / Issue 6/2021
Print ISSN: 0001-6268
Electronic ISSN: 0942-0940
DOI
https://doi.org/10.1007/s00701-020-04595-0

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