Research Article
Systematic Investigation of Polyurethane Biomaterial Surface Roughness on Human Immune Responses in vitro
Figure 6
Pro-inflammatory and anti-inflammatory cytokine production from THP-1-derived macrophages cultured on polyurethane with different surface roughness. Cytokine release from control THP-1-derived macrophages (M0 (neutral), M1 (pro-inflammatory), and M2 (anti-inflammatory)) cultured for 3 days on TCP or on polyurethane with increasing surface roughness ranging from P0 (flat) to P7 (roughest). Cytokines were analyzed using multiplexed bead-based sandwich immunoassays. Shown are the expression levels (pg/mL) of the pro-inflammatory (IL-1β, MIP-1β, MCP-1, IL-8, and TNF-α) and anti-inflammatory (IL-RA) cytokines. Data are shown as . If no error bars are shown in graphs, values were either above (IL-8 and IL-1RA) or below the limit of quantification (IL-1β). # vs. M0, $ vs. P0.