TY - JOUR
T1 - Microvasculature and intraplaque hemorrhage in atherosclerotic carotid lesions
T2 - a cardiovascular magnetic resonance imaging study
AU - Crombag, Genevieve A. J. C.
AU - Schreuder, Floris H. B. M.
AU - van Hoof, Raf H. M.
AU - Truijman, Martine T. B.
AU - Wijnen, Nicky J. A.
AU - Voo, Stefan A.
AU - Nelemans, Patty J.
AU - Heeneman, Sylvia
AU - Nederkoorn, Paul J.
AU - Daemen, Jan-Willem H.
AU - Daemen, Mat J. A. P.
AU - Mess, Werner H.
AU - Wildberger, J. E.
AU - van Oostenbrugge, Robert J.
AU - Kooi, M. Eline
N1 - Funding Information:
This research was performed within the framework of CTMM, the Center for Translational Molecular Medicine (www.ctmm.nl), project PARISk (grant 01C-202), and supported by the Dutch Heart Foundation. This project has received funding from the European Union (EU) Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 722609.M.E. Kooi and JE Wildberger are supported by Stichting de Weijerhorst.
Publisher Copyright:
© 2019 The Author(s).
PY - 2019/3/4
Y1 - 2019/3/4
N2 - BackgroundThe presence of intraplaque haemorrhage (IPH) has been related to plaque rupture, is associated with plaque progression, and predicts cerebrovascular events. However, the mechanisms leading to IPH are not fully understood. The dominant view is that IPH is caused by leakage of erythrocytes from immature microvessels. The aim of the present study was to investigate whether there is an association between atherosclerotic plaque microvasculature and presence of IPH in a relatively large prospective cohort study of patients with symptomatic carotid plaque.MethodsOne hundred and thirty-two symptomatic patients with 2mm carotid plaque underwent cardiovascular magnetic resonance (CMR) of the symptomatic carotid plaque for detection of IPH and dynamic contrast-enhanced (DCE)-CMR for assessment of plaque microvasculature. K-trans, an indicator of microvascular flow, density and leakiness, was estimated using pharmacokinetic modelling in the vessel wall and adventitia. Statistical analysis was performed using an independent samples T-test and binary logistic regression, correcting for clinical risk factors.ResultsA decreased vessel wall K-trans was found for IPH positive patients (0.0510.011min(-1) versus 0.0580.017min(-1), p=0.001). No significant difference in adventitial K-trans was found in patients with and without IPH (0.0570.012min(-1) and 0.057 +/- 0.018min(-1), respectively). Histological analysis in a subgroup of patients that underwent carotid endarterectomy demonstrated no significant difference in relative microvessel density between plaques without IPH (n=8) and plaques with IPH (n=15) (0.000333 +/- 0.0000707 vs. and 0.000289 +/- 0.0000439, p=0.585).ConclusionsA reduced vessel wall K-trans is found in the presence of IPH. Thus, we did not find a positive association between plaque microvasculature and IPH several weeks after a cerebrovascular event. Not only leaky plaque microvessels, but additional factors may contribute to IPH development.Trial registration NCT01208025. Registration date September 23, 2010. Retrospectively registered (first inclusion September 21, 2010). NCT01709045, date of registration October 17, 2012. Retrospectively registered (first inclusion August 23, 2011).
AB - BackgroundThe presence of intraplaque haemorrhage (IPH) has been related to plaque rupture, is associated with plaque progression, and predicts cerebrovascular events. However, the mechanisms leading to IPH are not fully understood. The dominant view is that IPH is caused by leakage of erythrocytes from immature microvessels. The aim of the present study was to investigate whether there is an association between atherosclerotic plaque microvasculature and presence of IPH in a relatively large prospective cohort study of patients with symptomatic carotid plaque.MethodsOne hundred and thirty-two symptomatic patients with 2mm carotid plaque underwent cardiovascular magnetic resonance (CMR) of the symptomatic carotid plaque for detection of IPH and dynamic contrast-enhanced (DCE)-CMR for assessment of plaque microvasculature. K-trans, an indicator of microvascular flow, density and leakiness, was estimated using pharmacokinetic modelling in the vessel wall and adventitia. Statistical analysis was performed using an independent samples T-test and binary logistic regression, correcting for clinical risk factors.ResultsA decreased vessel wall K-trans was found for IPH positive patients (0.0510.011min(-1) versus 0.0580.017min(-1), p=0.001). No significant difference in adventitial K-trans was found in patients with and without IPH (0.0570.012min(-1) and 0.057 +/- 0.018min(-1), respectively). Histological analysis in a subgroup of patients that underwent carotid endarterectomy demonstrated no significant difference in relative microvessel density between plaques without IPH (n=8) and plaques with IPH (n=15) (0.000333 +/- 0.0000707 vs. and 0.000289 +/- 0.0000439, p=0.585).ConclusionsA reduced vessel wall K-trans is found in the presence of IPH. Thus, we did not find a positive association between plaque microvasculature and IPH several weeks after a cerebrovascular event. Not only leaky plaque microvessels, but additional factors may contribute to IPH development.Trial registration NCT01208025. Registration date September 23, 2010. Retrospectively registered (first inclusion September 21, 2010). NCT01709045, date of registration October 17, 2012. Retrospectively registered (first inclusion August 23, 2011).
KW - Atherosclerosis
KW - DCE-MRI
KW - Intraplaque hemorrhage
KW - Microvasculature
KW - Ischemic stroke
KW - Cardiovascular Disease
KW - Magnetic Resonance Imaging (MRI)
KW - Cerebrovascular Disease
KW - Stroke
KW - Transient Ischemic Attack (TIA)
KW - CONTRAST-ENHANCED MRI
KW - RICH NECROTIC CORE
KW - PLAQUE PROGRESSION
KW - STROKE PATIENTS
KW - HIGH-RESOLUTION
KW - BLOOD-PRESSURE
KW - INPUT FUNCTION
KW - VASA VASORUM
KW - FIBROUS CAP
U2 - 10.1186/s12968-019-0524-9
DO - 10.1186/s12968-019-0524-9
M3 - Article
C2 - 30832656
SN - 1097-6647
VL - 21
JO - Journal of Cardiovascular Magnetic Resonance
JF - Journal of Cardiovascular Magnetic Resonance
M1 - 15
ER -