Project description:To profile single-cell transcriptome and analyze the diversity of cell types present in human atherosclerotic tissue specimens (carotid artery, CAR), we carried out scRNA-seq from 10 different patients.
Project description:This analysis compares gene expression in human carotid plaques with gene expression in major tissues and cell types in the human body (GSE1133, Su et al. 2004). Experiment Overall Design: Human carotid endarterectomies were isolated from six subjects with symptomatic carotid artery disease.
Project description:A microarray analysis of advanced human atherosclerotic carotid artery plaques (equal or over 70% stenosis, NASCET criteria) from radiologically confirmed ipsilateral stroke patients (stroke-susceptible plaques, n=12) compared with carotid plaques collected from clinically asymptomatic patients with clear brain imaging (asymptomatic plaques, n=9) with equivalent conventional risk factors and severity of carotid stenosis.
Project description:This analysis compares gene expression in human carotid plaques with gene expression in major tissues and cell types in the human body (GSE1133, Su et al. 2004).
Project description:Atherosclerosis is causally related to disturbed flow through low and oscillatory shear stress. In order to study the miR expression profile in atherosclerotic plaques induced by disturbed flow, partial ligation of the carotid artery was performed. This procedure results acutely in severly reduced blood flow and in stenotic lesion formation within 6 weeks in apoe-/- mice on a high fat diet. We compared the miR expression profile in partially ligated left carotid arteries with the untreated right carotid artery to identify miRs which are involved in plaque formation through flow disturbances. The left carotid arteries of 6 female apoe-/- mice (6-8 weeks) were partially ligated (i.e. the external and internal carotid artery as well as the occipital artery were occluded; blood flow out of the common carotid artery occurs mainly through the superior thyroid artery). Following partial ligation the animals were fed a high fat diet for 6 weeks. Total RNA was isolated from partially ligated left carotid arteries and untreated right carotid arteries (control). MiRs expression profile of the partially ligated carotid arteries were compared with the control group. Biological replicates: 6 per group. One replicate per array.
Project description:Using single-cell proteomic and transcriptomic analyses, we uncovered distinct features of both T cells and macrophages in carotid artery plaques of patients with clinically symptomatic disease (recent stroke or transient ischemic attack) compared to asymptomatic disease (no recent stroke). Additionally, macrophages from these plaques contained alternatively activated phenotypes, including subsets associated with plaque vulnerability. In plaques from asymptomatic patients, T cells and macrophages were activated and displayed evidence of interleukin-1β signaling. The identification of specific features of innate and adaptive immune cells in plaques that are associated with cerebrovascular events may enable the design of more precisely tailored cardiovascular immunotherapies.
Project description:Atherosclerosis is causally related to disturbed flow through low and oscillatory shear stress. In order to study the miR expression profile in atherosclerotic plaques induced by disturbed flow, partial ligation of the carotid artery was performed. This procedure results acutely in severly reduced blood flow and in stenotic lesion formation within 6 weeks in apoe-/- mice on a high fat diet. We compared the miR expression profile in partially ligated left carotid arteries with the untreated right carotid artery to identify miRs which are involved in plaque formation through flow disturbances.
Project description:We compared gene expression profiles between asymptomatic and symptomatic atherosclerotic plaques from the same patient. This was accomplished by analyzing carotid plaques from four patients with bilateral high-grade carotid artery stenoses one being symptomatic (TIA or stroke) and the other asymptomatic.