For placenta tissue, visfatin’s expression (IOD/area) in the GDM cohort was significantly higher than for the non-GDM group, but no significant difference between the G1 and G2 sub-cohorts (52.7 ± 17.3 for GDM-G1, 52.5 ± 9.5 for GDM-G2, and 31.8 ± 8.3 for non-GDM, respectively) was found [143]. Here, NAMPT is linked to gestational diabetes.