MAOA and gestational diabetes: In metabolically healthy pregnancies, placental MAOA mRNA levels correlated positively with V<sub>max</sub> (rp=0.68, p=0.001), while this relationship was absent in placentas from women with OWO and/or GDM (<i>p</i>>0.05).<h4>Conclusions</h4>Our findings suggest no alterations in placental monoamine catabolism in pregnancies complicated by maternal OWO, but indicate possible subtle changes in those complicated by GDM.