CD40LG and endothelial dysfunction: Furthermore, significant differences in PWV (7.80 (7.10–8.00) m/s vs. 9.50 (8.88–10.70) m/s; p < 0.001) and ABI (1.11 (0.95–1.22) vs 0.90 (0.86–1.14); p < 0.001) were observed between those women who developed PE and presented IgM aPS/PT in comparison with PE women without IgM aPS/PT, which suggest that endothelial dysfunction in preeclamptic women may be significantly accentuated in the presence of IgM aPS/PT.