Lipoprotein apheresis influences monocyte subpopulations

• Published in: Atherosclerosis. Supplements Vol. 30; pp. 108 - 114
• Main Authors: Jellinghaus, S., Reich, C., Schatz, U., Tselmin, S., Ibrahim, K., Pfluecke, C., Schauer, A., Bornstein, S.R., Hohenstein, B., Strasser, R.H., Julius, U., Poitz, D.M.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.11.2017
• Subjects: Adult; Aged; Aged, 80 and over; Biomarkers - blood; Blood Component Removal - adverse effects; Blood Component Removal - methods; Case-Control Studies; Dyslipidemias - blood; Dyslipidemias - diagnosis; Dyslipidemias - immunology; Dyslipidemias - therapy; Female; Germany; GPI-Linked Proteins - blood; Hospitals, University; Humans; Lipids - blood; Lipopolysaccharide Receptors - blood; Lipoprotein apheresis; Male; Middle Aged; Monocytes; Monocytes - classification; Monocytes - immunology; Phenotype; Receptors, IgG - blood; Subpopulations; Time Factors; Treatment Outcome; Subpopulations; PAOD; LDL-C; art. hypert; Lipoprotein apheresis; Lp(a); TC; HDL-C; Monocytes; oxLDL; MI; CHD; BMI
• ISSN: 1567-5688; 1878-5050
• DOI: 10.1016/j.atherosclerosissup.2017.05.027

Monocytes can be differentiated into subpopulations depending on their expression profile of CD14 and CD16. CD16-positive monocytes are associated with coronary artery disease. Up to now, no data exist about the effect of lipoprotein apheresis (LA) on the distribution of monocyte subpopulations. 80 patients who underwent LA at the University Hospital Dresden were included in the study. 8 out of the 80 LA patients received LA for the first time at the time point of blood analysis. Six different methods of LA were used (H.E.L.P. n = 8; Liposorber D n = 10; LF n = 14; DALI n = 17; MONET n = 11; Therasorb® LDL n = 12). Blood samples were taken immediately before and after LA and analyzed for CD14 and CD16 expression on monocytes. A total of 42 patients with cardiovascular risk factors but no indication for LA served as control group. The composition of monocyte-population was analyzed in regard to the 3 subpopulations. After LA, an increase in classical monocytes (CD14++CD16−) (93.3% vs. 93.9%, p < 0.01) and a decrease in non-classical monocytes (CD14+CD16+) (1.5% vs 1.0%; p < 0.001) were observed. LA did not change the amount of intermediate monocytes (CD14++CD16+) (5.3% vs. 5.1%). Two methods (MONET and Therasorb® LDL) did not influence the distribution of monocyte subpopulations. Interestingly, patients with LDL-C above 2.5 mmol/l prior LA showed increased amounts of intermediate monocytes. The distribution of monocyte populations is influenced by LA but depends on the distinct method of LA. Influences of LA were mainly observed in the content of classical and non-classical monocytes, whereas the intermediate monocyte population remained unaltered by LA.