Failure to transform uteroplacental spiral arteries is thought to underpin disorders of pregnancy, including preeclampsia and fetal growth restriction (FGR). In this study, spiral artery remodeling and extravillous-cytotrophoblast were examined in placental bed biopsies from normal pregnancy (n = 25), preeclampsia (n = 22), and severe FGR (n = 10) and then compared with clinical parameters. Bio...

Preeclampsia is a complex disease that increases both maternal and fetal morbidity and mortality in both developed and developing countries. It complicates around 5-10% of all pregnancies..The pathophysiology of preeclampsia includes both maternal and fetal/placental factors. Implantation of embryo and placentation are crucial steps for development of pregnancy involving trophoblast invasion. A...

34 35 The present study was conducted to determine the impact of suppressing trophoblast 36 remodeling of the uterine spiral arteries by prematurely elevating estrogen levels in the first 37 trimester of baboon pregnancy on uterine and umbilical blood flow dynamics. Uteroplacental 38 blood flow was assessed by Doppler ultrasonography after acute administration of saline (basal 39 state) and ser...

The present study was conducted to determine the impact of suppressing trophoblast remodeling of the uterine spiral arteries by prematurely elevating estrogen levels in the first trimester of baboon pregnancy on uterine and umbilical blood flow dynamics. Uteroplacental blood flow was assessed by Doppler ultrasonography after acute administration of saline (basal state) and serotonin on days 60,...

BACKGROUND We aimed to evaluate the effect of the levonorgestrel-releasing intrauterine system (LNG-IUS) on the uterine vasculature and the endometrium. METHODS The study was a prospective controlled study evaluating the local effects of LNG-IUS compared with the copper intrauterine device (IUD). Forty-seven women carrying LNG-IUS (group A) were compared with 35 women carrying copper IUD in a...

BACKGROUND AND PURPOSE We sought to demonstrate that tumor necrosis factor (TNF)-α, via sphingosine-1-phosphate signaling, has the potential to alter cochlear blood flow and thus, cause ischemic hearing loss. METHODS We performed intravital fluorescence microscopy to measure blood flow and capillary diameter in anesthetized guinea pigs. To measure capillary diameter ex vivo, capillary beds fr...

PURPOSE To develop high temporal resolution coronary artery spiral phase velocity mapping sequences and to compare the results obtained with those from FLASH sequences. MATERIALS AND METHODS Velocity curves were obtained in eight left and eight right coronary arteries using breath-hold interleaved spiral (BH_SP), free-breathing interleaved spiral (FB_SP), breath-hold segmented FLASH (BH_FL), ...

Spontaneous coronary artery dissections are an infrequent cause of myocardial infarction and have been reported in late stages of pregnancy and in the puerperium phase. We report a case of a 26-year-old post-partum woman who was diagnosed with a spiral coronary dissection of the left anterior descending artery, with a compromised diagonal branch. She underwent an emergent surgical revasculariza...