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. 2020 Jan 3;134(1):3–13. doi: 10.1042/CS20190577

Table 1. Mediators released from PVAT or PVAT resident immune cells along with their functions and major cellular sources.

Mediator Function Major sources References
Pro-atherogenic
MCP-1 Increases chemotaxis and transendothelial migration of monocytes. Proangiogenic Adipocytes, inflammatory cells [1,6,8,11,22,28,30,31,45,46,48,53]
TNF-α Activates M1 macrophages, chemoattractant for neutrophils Macrophages and other inflammatory cells [6,11,18,22,28,50]
Leptin Increases TNF-α IL-6, IL-12, reactive oxygen species (ROS), enhances macrophage phagocytosis, increases proliferation, and migration of monocytes and VSMCs Adipocytes [54]
Resistin Promotes endothelial cell activation by inducing endothelin-1 release and by up-regulating endothelial adhesion molecules (i.e., VCAM-1, MCP-1) Adipocytes, macrophages [21,22,55]
Visfatin Increases IL-6, IL-8, TNF-α, VSMC proliferation and migration Decreases apoptosis of neutrophils Adipocytes, macrophages [56–58]
Osteoprotegerin Both pro-inflammatory and anti-inflammatory Adipocytes [8,59]
PAI-1 Fibrinolysis inhibitor, decreases plasminogen activation Adipocytes, platelets, vascular endothelium, [60,61]
IL-6 Decreases adiponectin section, lipoprotein lipase activity. Increases lipolysis, suppressor of cytokine signaling type-3 (SOCS-3), proangiogenic Macrophages, fibroblasts, endothelial cells, adipocytes [6,18,22,28,45,46]
IL-8 Increases chemotaxis of monocytes, neutrophils, T lymphocytes, ROS production Macrophages [6,46]
IL-1β Pro-inflammatory Macrophages [18,62]
Complement 3 Stimulates adventitial fibroblast migration and differentiation Adipocytes [63]
Complement 7 Complement systemic factor Adipocytes [8]
Complement H Complement systemic factor Adipocytes [60]
GM-CSF Regulates and promotes growth and population of monocytes and macrophages Macrophages and T cells [45]
VEGF Pro-angiogenic Macrophages [1,38,46]
Anti-atherogenic
Adiponectin Suppress synthesis of TNF-α, IFN-γ, NF-κB, phagocytosis, induce production of IL-10, IL-1 receptor antagonist Adipocytes [54,64]
Adrenomedullin Decreases inflammation Adipocytes [62,65]
TAIP6 Anti-inflammatory Adipocytes [8]
SOCS2 Anti-inflammatory Adipocytes [60]
IL-4 Stimulation of activated B-cell and T-cell proliferation, and differentiation of B cells into plasma cells. Decreases production of Th1 cells, macrophages T cells, Basophils, Eosinophils [37]
IL-10 Down-regulates expression of molecules that activate T cells and macrophages. Enhances B-cell survival. Inhibits synthesis of pro-inflammatory cytokines Monocytes, T cells, Eosinophils [66]
TGF-β Anti-inflammatory. Stimulates differentiation of PV-ADSCs into VSMCs T cells, B cells, Eosinophils [37,38]
Omentin Anti-inflammatory Adipocytes [67]