Maternal β-methasone (β) prior to intra-amniotic lipopolysaccharide (LPS) blunts expression of proinflammatory cytokines/chemokines in the amniotic fluid. Amniotic fluid cytokines were quantitated using enzyme-linked immunosorbent assay (ELISA). A, IL-1β, (B) IL-6, and (C) IL-8. Compared to the saline 14 days/LPS group, β 14 days/LPS 7 days animals had lower IL-1β and IL-8 levels. N = 4-6 animals/group, *P < .05 versus saline 14 days/saline 7 days, #
P < .05 versus saline14 days/LPS 7 days.