Increased frequency of proangiogenic tunica intima endothelial kinase 2 (Tie2) expressing monocytes in individuals with type 2 diabetes mellitus

Autor: M. Reijrink, J. van Ark, C. P. H. Lexis, L. M. Visser, M. E. Lodewijk, I. C. C. van der Horst, C. J. Zeebregts, H. van Goor, S. C. A. de Jager, G. Pasterkamp, B. H. R. Wolffenbuttel, J. L. Hillebrands
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Cardiovascular Diabetology, Vol 21, Iss 1, Pp 1-16 (2022)
Druh dokumentu: article
ISSN: 1475-2840
DOI: 10.1186/s12933-022-01497-6
Popis: Abstract Background Individuals with type 2 diabetes mellitus (T2DM) have an increased risk for developing macrovascular disease (MVD) manifested by atherosclerosis. Phenotypically and functionally different monocyte subsets (classical; CD14++CD16−, non-classical; CD14+CD16++, and intermediate; CD14++CD16+) including pro-angiogenic monocytes expressing Tie2 (TEMs) can be identified. Here we investigated monocyte heterogeneity and its association with T2DM and MVD. Methods Individuals with (N = 51) and without (N = 56) T2DM were recruited and allocated to "non-MVD" or "with MVD" (i.e., peripheral or coronary artery disease) subgroups. Blood monocyte subsets were quantified based on CD14, CD16 and Tie2 expression levels. Plasma levels of Tie2-ligands angiopoietin-1 and angiopoietin-2 were determined using ELISA. Carotid endarterectomy samples from individuals with (N = 24) and without (N = 22) T2DM were stained for intraplaque CD68+ macrophages (inflammation) and CD34+ (angiogenesis), as plaque vulnerability markers. Results Monocyte counts were similar between individuals with T2DM and healthy controls (non-diabetic, non-MVD). Non-classical monocytes were reduced (p
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