Murine Neutrophil Chemotaxis Following Burn Injury with Poloxamer 188 Treatment in a Microfluidic Platform

This study investigates the effects of Poloxamer 188 (P188) on neutrophil chemotaxis following burn injury in male and female mice using a microfluidic system. Utilizing male and female CD1 mice, we evaluated neutrophil migration towards two chemoattractants, N-formyl-l-methionyl-l-leucyl-l-phenylalanine (fMLP) and Leukotriene B4 (LTB4), and FPR1 and BLT1 G protein-coupled receptors after administering P188. Our findings revealed that P188 significantly increased the migration toward LTB4 in both sexes. Additionally, our findings highlight the upregulation of BLT1 and FPR1 markers due to burn injury in both female and male mice in the Burn vs. Sham groups. These results demonstrate the potential of P188 in modulating neutrophil behavior post-burn injury in therapeutic strategies for inflammation management. This microfluidic platform offers a precise and controlled microenvironment for studying neutrophil chemotaxis post-burn injury with and without P188 treatment.