Decreased uteroplacental perfusion in Japanese macaques fed a high-fat diet
Maternal high-fat diet (HFD) leads to increased uterine artery pulsatility Index (PI). A: uterine artery (Uta) PI is 0.74 in a representative control animal. B: the Uta PI is 1.17 in a representative HFD-sensitive (HFD-S) animal with a Doppler waveform that demonstrates decreased diastolic flow consistent with increased vascular impedance compared with A. C: the calculated Uta blood flow (cQUta) normalized to maternal weight was significantly reduced in HFD-R and HFD-S animals compared with CTR. D: Uta PI is increased in HFD-S animals compared with CTR. As a group, HFD (HFD-R + HFD-S) had a significant increase in Uta PI compared with CTR. E: the calculated umbilical vein blood flow (cQUV) normalized to fetal abdominal circumference was reduced in HFD-S animals compared with controls. There was no difference in HFD-R animals compared with controls. F: the umbilical artery (UA) PI was unaffected by diet group. *Significant difference (P < 0.0): CTR, n = 9; HFD-R, n = 6; HFD-S, n = 9. Reproduced from Ref. 13 with permission.