PMID- 27023515 OWN - NLM STAT- MEDLINE DCOM- 20161214 LR - 20220331 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 17 IP - 4 DP - 2016 Mar 23 TI - Monocyte Subsets and Related Chemokines in Carotid Artery Stenosis and Ischemic Stroke. PG - 433 LID - 10.3390/ijms17040433 [doi] LID - 433 AB - Carotid stenosis (CS) is an important cause of ischemic stroke. However, reliable markers for the purpose of identification of high-risk, so-called vulnerable carotid plaques, are still lacking. Monocyte subsets are crucial players in atherosclerosis and might also contribute to plaque rupture. In this study we, therefore, aimed to investigate the potential role of monocyte subsets and associated chemokines as clinical biomarkers for vulnerability of CS. Patients with symptomatic and asymptomatic CS (n = 21), patients with cardioembolic ischemic strokes (n = 11), and controls without any cardiovascular disorder (n = 11) were examined. Cardiovascular risk was quantified using the Essen Stroke Risk Score (ESRS). Monocyte subsets in peripheral blood were measured by quantitative flow cytometry. Plaque specimens were histologically analyzed. Furthermore, plasma levels of monocyte chemotactic protein 1 (MCP-1) and fractalkine were measured. Intermediate monocytes (Mon2) were significantly elevated in symptomatic and asymptomatic CS-patients compared to controls. Mon2 counts positively correlated with the ESRS. Moreover, stroke patients showed an elevation of Mon2 compared to controls, independent of the ESRS. MCP-1 levels were significantly higher in patients with symptomatic than in those with asymptomatic CS. Several histological criteria significantly differed between symptomatic and asymptomatic plaques. However, there was no association of monocyte subsets or chemokines with histological features of plaque vulnerability. Due to the multifactorial influence on monocyte subsets, the usability as clinical markers for plaque vulnerability seems to be limited. However, monocyte subsets may be critically involved in the pathology of CS. FAU - Grosse, Gerrit M AU - Grosse GM AD - Department of Neurology, Hannover Medical School, 30625 Hannover, Germany. grosse.gerrit@mh-hannover.de. FAU - Schulz-Schaeffer, Walter J AU - Schulz-Schaeffer WJ AD - Department of Neuropathology, University Medical Center Gottingen, 37099 Gottingen, Germany. wjschulz@med.uni-goettingen.de. FAU - Teebken, Omke E AU - Teebken OE AD - Department of Vascular Surgery, Klinikum Peine, 31226 Peine, Germany. omke.teebken@klinikum-peine.de. FAU - Schuppner, Ramona AU - Schuppner R AD - Department of Neurology, Hannover Medical School, 30625 Hannover, Germany. schuppner.ramona@mh-hannover.de. FAU - Dirks, Meike AU - Dirks M AD - Department of Neurology, Hannover Medical School, 30625 Hannover, Germany. dirks.meike@mh-hannover.de. FAU - Worthmann, Hans AU - Worthmann H AD - Department of Neurology, Hannover Medical School, 30625 Hannover, Germany. worthmann.hans@mh-hannover.de. FAU - Lichtinghagen, Ralf AU - Lichtinghagen R AD - Department of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany. lichtinghagen.ralf@mh-hannover.de. FAU - Maye, Gerrit AU - Maye G AD - Department of Nephrology and Hypertension, Hannover Medical School, 30625 Hannover, Germany. gerritmaye@gmail.com. FAU - Limbourg, Florian P AU - Limbourg FP AD - Department of Nephrology and Hypertension, Hannover Medical School, 30625 Hannover, Germany. limbourg.florian@mh-hannover.de. FAU - Weissenborn, Karin AU - Weissenborn K AD - Department of Neurology, Hannover Medical School, 30625 Hannover, Germany. Weissenborn.Karin@mh-hannover.de. AD - Center for Systems Neuroscience (ZSN), 30559 Hannover, Germany. Weissenborn.Karin@mh-hannover.de. LA - eng PT - Journal Article DEP - 20160323 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Biomarkers) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CX3CL1) RN - 0 (Chemokines) SB - IM MH - Aged MH - Aged, 80 and over MH - Biomarkers/metabolism MH - Carotid Stenosis/complications/metabolism/*pathology MH - Case-Control Studies MH - Chemokine CCL2/blood MH - Chemokine CX3CL1/blood MH - Chemokines/*blood MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Flow Cytometry MH - Humans MH - Leukocyte Count MH - Male MH - Middle Aged MH - Monocytes/cytology/immunology/*metabolism MH - Risk Factors MH - Stroke/epidemiology/*etiology PMC - PMC4848889 OTO - NOTNLM OT - atherosclerosis OT - biomarkers OT - carotid stenosis OT - ischemic stroke OT - plaque analysis EDAT- 2016/03/31 06:00 MHDA- 2016/12/15 06:00 PMCR- 2016/04/01 CRDT- 2016/03/30 06:00 PHST- 2016/01/30 00:00 [received] PHST- 2016/03/08 00:00 [revised] PHST- 2016/03/17 00:00 [accepted] PHST- 2016/03/30 06:00 [entrez] PHST- 2016/03/31 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] PHST- 2016/04/01 00:00 [pmc-release] AID - ijms17040433 [pii] AID - ijms-17-00433 [pii] AID - 10.3390/ijms17040433 [doi] PST - epublish SO - Int J Mol Sci. 2016 Mar 23;17(4):433. doi: 10.3390/ijms17040433.