Osteoprotegerin, pericytes and bone-like vascular calcification are associated with carotid plaque stability

Vascular calcification, recapitulating bone formation, has a profound impact on plaque stability. The aim of the present study was to determine the influence of bone-like vascular calcification (named osteoid metaplasia = OM) and of osteoprotegerin on plaque stability. Tissue from carotid endarterec...

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Veröffentlicht in:PloS one 2014-09, Vol.9 (9), p.e107642-e107642
Hauptverfasser: Davaine, Jean-Michel, Quillard, Thibaut, Brion, Régis, Lapérine, Olivier, Guyomarch, Béatrice, Merlini, Thierry, Chatelais, Mathias, Guilbaud, Florian, Brennan, Meadhbh Áine, Charrier, Céline, Heymann, Dominique, Gouëffic, Yann, Heymann, Marie-Françoise
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container_title PloS one
container_volume 9
creator Davaine, Jean-Michel
Quillard, Thibaut
Brion, Régis
Lapérine, Olivier
Guyomarch, Béatrice
Merlini, Thierry
Chatelais, Mathias
Guilbaud, Florian
Brennan, Meadhbh Áine
Charrier, Céline
Heymann, Dominique
Gouëffic, Yann
Heymann, Marie-Françoise
description Vascular calcification, recapitulating bone formation, has a profound impact on plaque stability. The aim of the present study was to determine the influence of bone-like vascular calcification (named osteoid metaplasia = OM) and of osteoprotegerin on plaque stability. Tissue from carotid endarterectomies were analysed for the presence of calcification and signs of vulnerability according to AHA grading system. Osteoprotegerin (OPG), pericytes and endothelial cells were sought using immuno-histochemistry. Symptoms and preoperative imaging findings (CT-scan, MRI and Doppler-scan) were analyzed. Human pericytes were cultured to evaluate their ability to secrete OPG and to influence mineralization in the plaque. Seventy-three carotid plaques (49 asymptomatic and 24 symptomatic) were harvested. A significantly higher presence of OM (18.4% vs 0%, p
doi_str_mv 10.1371/journal.pone.0107642
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The aim of the present study was to determine the influence of bone-like vascular calcification (named osteoid metaplasia = OM) and of osteoprotegerin on plaque stability. Tissue from carotid endarterectomies were analysed for the presence of calcification and signs of vulnerability according to AHA grading system. Osteoprotegerin (OPG), pericytes and endothelial cells were sought using immuno-histochemistry. Symptoms and preoperative imaging findings (CT-scan, MRI and Doppler-scan) were analyzed. Human pericytes were cultured to evaluate their ability to secrete OPG and to influence mineralization in the plaque. Seventy-three carotid plaques (49 asymptomatic and 24 symptomatic) were harvested. A significantly higher presence of OM (18.4% vs 0%, p&lt;0.01), OPG (10.2% of ROI vs 3.4% of ROI, p&lt;0.05) and pericytes (19% of ROI vs 3.8% of ROI, p&lt;0.05) were noted in asymptomatic compared to symptomatic plaques. Consistently, circulating OPG levels were higher in the plasma of asymptomatic patients (3.2 ng/mL vs 2.5 ng/mL, p = 0.05). In vitro, human vascular pericytes secreted considerable amounts of OPG and underwent osteoblastic differentiation. Pericytes also inhibited the osteoclastic differentiation of CD14+ cells through their secretion of OPG. OPG (intraplaque an plasmatic) and OM are associated with carotid plaque stability. 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The aim of the present study was to determine the influence of bone-like vascular calcification (named osteoid metaplasia = OM) and of osteoprotegerin on plaque stability. Tissue from carotid endarterectomies were analysed for the presence of calcification and signs of vulnerability according to AHA grading system. Osteoprotegerin (OPG), pericytes and endothelial cells were sought using immuno-histochemistry. Symptoms and preoperative imaging findings (CT-scan, MRI and Doppler-scan) were analyzed. Human pericytes were cultured to evaluate their ability to secrete OPG and to influence mineralization in the plaque. Seventy-three carotid plaques (49 asymptomatic and 24 symptomatic) were harvested. A significantly higher presence of OM (18.4% vs 0%, p&lt;0.01), OPG (10.2% of ROI vs 3.4% of ROI, p&lt;0.05) and pericytes (19% of ROI vs 3.8% of ROI, p&lt;0.05) were noted in asymptomatic compared to symptomatic plaques. 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source MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry; Public Library of Science (PLoS)
subjects Atherosclerosis
Biocompatibility
Biology and Life Sciences
Biomedical materials
Bone growth
Bones
Calcification
Calcification (ectopic)
Cardiovascular disease
Carotid Stenosis - diagnosis
Carotid Stenosis - metabolism
Carotid Stenosis - pathology
CD14 antigen
CD146 Antigen - metabolism
Cell Differentiation
Computed tomography
Cytokines
Differentiation
Endothelial cells
Evaluation
Family medical history
Histochemistry
Homeostasis
Humans
Ligands
Magnetic resonance imaging
Medicine and Health Sciences
Metaplasia
Mineralization
Mortality
Osteoblastogenesis
Osteoblasts
Osteoblasts - cytology
Osteoblasts - metabolism
Osteoclastogenesis
Osteoclasts
Osteogenesis
Osteoid
Osteoprotegerin
Osteoprotegerin - blood
Osteoprotegerin - metabolism
Patients
Pericytes
Pericytes - cytology
Pericytes - metabolism
Plaque, Atherosclerotic - metabolism
Plaque, Atherosclerotic - pathology
Plaques
RANK Ligand - metabolism
Rodents
Stability analysis
Stroke
Studies
Surgery
Tumor necrosis factor-TNF
Vascular Calcification
title Osteoprotegerin, pericytes and bone-like vascular calcification are associated with carotid plaque stability
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