Placental ABCA1 Expression Is Increased in Spontaneous Preterm Deliveries Compared with Iatrogenic Preterm Deliveries and Term Deliveries

Figure 3

Representative immunohistochemistry images for ABCA1 (a–c) and ABCG1 (A–C) in the placental tissues of women with spontaneous preterm (SPD, (a, A)), induced preterm (IPD, (b, B)), and term (TD, (c, C)) deliveries, with positive staining shown in brown. ABCA1 expression was localized to the syncytium and vascular endothelial cells of the placental tissues, as indicated by the arrowheads. No staining was observed in the isotype controls (d, D). Original magnification, ×200. (e, f) Semiquantitative analysis of ABCA1 (e) and ABCG1 (f) protein expressions. Statistical significance was determined by one-way ANOVA followed by SNK.