CXCL8 and chorioamnionitis: In infection-mediated preterm labor with chorioamnionitis, neutrophil chemokines CXCL-8, CXCL1, and CXCL2 demonstrate consistent elevation across all uterine tissues, while monocyte chemokines show tissue-specific patterns: CCL2 increases in both the choriodecidua and amnion, whereas CCL5 elevation is restricted to the choriodecidua.