scholarly journals Vitamin D deficiency and impaired placental function: potential regulation by glucocorticoids?

Reproduction ◽  
2017 ◽  
Vol 153 (5) ◽  
pp. R163-R171 ◽  
Author(s):  
Nathanael Yates ◽  
Rachael C Crew ◽  
Caitlin S Wyrwoll
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Intrauterine Growth Restriction ◽  
Adverse Outcomes ◽  
Growth Restriction ◽  
Placental Function ◽  
Maternal Vitamin ◽  
Intrauterine Growth ◽  
The Impact ◽  
Established Role

Maternal vitamin D deficiency has been implicated in a range of pregnancy complications including preeclampsia, preterm birth and intrauterine growth restriction. Some of these adverse outcomes arise from alterations in placental function. Indeed, vitamin D appears critical for implantation, inflammation, immune function and angiogenesis in the placenta. Despite these associations, absence of the placental vitamin D receptor in mice provokes little effect. Thus, interactions between maternal and fetal compartments are likely crucial for instigating adverse placental changes. Indeed, maternal vitamin D deficiency elicits changes in glucocorticoid-related parameters in pregnancy, which increase placental and fetal glucocorticoid exposure. Asin uteroglucocorticoid excess has a well-established role in eliciting placental dysfunction and fetal growth restriction, this review proposes that glucocorticoids are an important consideration when understanding the impact of vitamin D deficiency on placental function and fetal development.

scholarly journals 152 Impact of chorionic somatomammotropin RNA interference on uterine blood flow and placental glucose uptake in the absence of intrauterine growth restriction

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 121-121
Author(s):  
Amelia R Tanner ◽  
Asghar Ali ◽  
Quinton A Winger ◽  
Paul J Rozance ◽  
Russell V Anthony
Keyword(s):  
Rna Interference ◽  
Glucose Uptake ◽  
Intrauterine Growth Restriction ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
Blood Flows ◽  
Umbilical Blood ◽  
Exact Function ◽  
Chorionic Somatomammotropin ◽  
The Impact

Abstract Chorionic somatomammotropin (CSH) is one of the most abundant hormones produced by the sheep placenta, yet the exact function of CSH has been elusive. Previously we reported the use of in vivo RNA interference (RNAi) to assess the impact of CSH deficiency on placental and fetal growth in sheep. Near-term (135 dGA), there are two distinct CSH RNAi phenotypes: 1) pregnancies with intrauterine growth restriction (IUGR), and 2) pregnancies with normal fetal and placental weights. This study describes physiological changes in the latter phenotype. To generate the CSH RNAi pregnancies, the trophectoderm of hatched blastocysts (9 dGA) were infected with lentiviral-constructs expressing either a scrambled control (NTS) or CSH-specific shRNA (CSH RNAi), prior to transfer into synchronized recipient ewes. At 120 dGA, 6 NTS and 6 CSH RNAi pregnancies were fitted with maternal and fetal catheters. Uterine and umbilical blood flows were measured utilizing the 3H2O transplacental diffusion technique at 132 dGA, and nutrient uptakes were calculated by the Fick principle. Resulting data were analyzed by Student’s t-test and significance was set at P ≤ 0.05. CSH RNAi tended (P ≤ 0.10) to reduce placentome weight with no effect on fetal weight. Absolute (ml/min) and relative (ml/min/kg fetus) uterine blood flows were reduced (P ≤ 0.05) in CSH RNAi pregnancies, but umbilical flows were not impacted. The uterine artery-to-vein glucose gradient (mmol/l) was significantly (P ≤ 0.05) increased, whereas the gradients for taurine and glycine were reduced (P ≤ 0.05). Uteroplacental glucose uptake (mmol/min/kg placenta) was increased 27% (P ≤ 0.05), whereas umbilical glucose uptake (mmol/min/kg fetus) was reduced 13%. This cohort demonstrates that even in the absence of IUGR, CSH deficiency has significant physiological ramifications, and the investigation of CSH RNAi pregnancies exhibiting both IUGR and non-IUGR phenotypes may help determine the direct effects of CSH and its potential impact on fetal programming. Supported by NIH R01 HD093701.

Zearalenone disrupts the placental function of rats: A possible mechanism causing intrauterine growth restriction

2020 ◽  
Vol 145 ◽  
pp. 111698
Author(s):  
Peipei Pan ◽  
Yingfen Ying ◽  
Feifei Ma ◽  
Cheng Zou ◽  
Yige Yu ◽  
...  
Keyword(s):  
Intrauterine Growth Restriction ◽  
Growth Restriction ◽  
Placental Function ◽  
Intrauterine Growth

scholarly journals Placental Growth Factor for the Prediction of Adverse Outcomes in Patients with Suspected Preeclampsia or Intrauterine Growth Restriction

PLoS ONE ◽  
2012 ◽  
Vol 7 (11) ◽  
pp. e50208 ◽  
Author(s):  
Jeanne Sibiude ◽  
Jean Guibourdenche ◽  
Marie-Danielle Dionne ◽  
Camille Le Ray ◽  
Olivia Anselem ◽  
...  
Keyword(s):  
Growth Factor ◽  
Intrauterine Growth Restriction ◽  
Placental Growth Factor ◽  
Adverse Outcomes ◽  
Growth Restriction ◽  
Intrauterine Growth

scholarly journals Whey Versus Casein as a Protein Source during the Weaning Period: Impact on Growth and Later Adiposity and Glucose Homeostasis in a Rat Model of Intrauterine Growth Restriction

Nutrients ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3399
Author(s):  
Yasaman Shahkhalili ◽  
Florence Blancher-Budin ◽  
Cathriona Monnard ◽  
Julie Moulin ◽  
José Sanchez-Garcia ◽  
...  
Keyword(s):  
Glucose Homeostasis ◽  
Intrauterine Growth Restriction ◽  
Early Life ◽  
Growth Restriction ◽  
Protein Source ◽  
Intrauterine Growth ◽  
Populations At Risk ◽  
Ad Libitum ◽  
The Impact

The impact of early life protein source (whey vs. casein) on short- and long-term glucose homeostasis and adiposity is unknown and was investigated in this study. At the end of the suckling period, non-IUGR (intrauterine growth restriction) and IUGR pups were separated from dams and were randomized into four groups. From age 21–49 days, non-IUGR and IUGR pups were fed ad-libitum chow or a semi-synthetic diet (20% from protein; casein or whey) and from age 50–199 days, all groups were fed ad-libitum chow. Food intake, body composition, glucose, and insulin homeostasis were assessed. Among the chow groups, IUGR had slower growth and higher fasting glucose at age 42 days, as well as higher fasting and AUC glucose at age 192 days relative to non-IUGR. The whey IUGR group had a slower growth rate and higher fasting glycemia in early life (age 21–49 days) and higher HOMA-IR later in life (age 120–122 and 190–192 days) relative to casein IUGR. This study shows the potential advantage of casein relative to whey during weaning on short term energy intake, growth, and glucose homeostasis in an IUGR model and reveals, for the first time, its long term impact on insulin sensitivity, which may have implications for later metabolic health, particularly in small-for-gestational-age populations at risk of type 2 diabetes.

CORRELATION BETWEEN CEREBROPLACENTAL RATIO AND ADVERSE OUTCOMES IN INTRAUTERINE GROWTH RESTRICTION

2018 ◽  
Vol 8 (3) ◽  
pp. 82-89
Author(s):  
Tran Thao Nguyen Nguyen ◽  
Van Duc Vo ◽  
Ngoc Thanh Cao
Keyword(s):  
Gestational Age ◽  
Intrauterine Growth Restriction ◽  
Adverse Outcomes ◽  
Growth Restriction ◽  
Fetal Weight ◽  
Intrauterine Growth ◽  
Cerebroplacental Ratio ◽  
Gestational Age At Delivery ◽  
The Mean ◽  
Estimated Fetal Weight

Objectives: To identify the values of CPR in intrauterine growth restriction and evaluate the correlation between cerebroplacental ratio and adverse outcomes in intrauterine growth restriction. Material and methods: A prospective study was conducted on 74 cases of intrauterine growth restriction with an estimated fetal weight less than 10th percentile, at Departement of Obstetric and Gynecology of Hue University of Medicine and Pharmacy from 05/2016 – 05/2017. CPR was calculated by PIMCA/PIUA.. The adverse outcomes included gestational age at delivery, methods used to delivery, APGAR score below 7 at 1 minutes and 5 minutes, admission at NICU, perinatal deaths, neonatals deaths. Results: The mean of CPR in group of early IUGR and late IUGR were 0.55 ± 0.14, 1.59 ± 0.69, respectively. The mean of CPR in group IUGR with an estimated fetal weight under the 3th percentile was 1.49 ± 0.76, lower than the mean of CPR in group IUGR with an estimated fetal weight from 3th percentile to 10th percentile. With cut – off at 1, CPR < 1 had the higher prevalence in group of early IUGR, in group IUGR with the estimated fetal weight below the 3th percentile, in group IUGR with hypoamniotic or oligohydramnios. The mean of gestational age at delivery of group IUGR with CPR < 1 and CPR >1 were 37.00 ± 3.18, and 38.59 ± 1.76, respectively. The rate of emergency cesarean section deliveries in the CPR < 1 and CPR > 1 group were 68.75% and 39.65%, respectively (p <0.05). Percentage of neonatal with APGAR ≤ 7 at 1 minute in the group with CPR < 1 and CPR > 1 were 56.25% and 22.41%, respectively. Rate of prenatal death was 12.5 in group IUGR with CPR < 1. Conclusion: There was a strong correlation between CPR and adverse outcomes in intrauterine growth restriction. Key words: intrauterine growth restriction, CPR ratio, middle cerebro artery, umbilical artery

The impact of intrauterine growth restriction on cytochrome P450 enzyme expression and activity

Placenta ◽  
2020 ◽  
Vol 99 ◽  
pp. 50-62
Author(s):  
Grace M. McBride ◽  
Michael D. Wiese ◽  
Jia Yin Soo ◽  
Jack R.T. Darby ◽  
Mary J. Berry ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Intrauterine Growth Restriction ◽  
Growth Restriction ◽  
Cytochrome P450 Enzyme ◽  
Enzyme Expression ◽  
Intrauterine Growth ◽  
P450 Enzyme ◽  
The Impact ◽  
Expression And Activity

The impact of maternal parameters on intrauterine growth restriction

Perinatologia ◽  
2017 ◽  
Vol 1 (1) ◽  
pp. 6
Author(s):  
Monica Mihaela Cîrstoiu ◽  
Natalia Turcan ◽  
Roxana-Elena Bohîlţea ◽  
Octavian Munteanu ◽  
Oana Bodean ◽  
...  
Keyword(s):  
Intrauterine Growth Restriction ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
The Impact
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