scholarly journals Spiral artery function in different placental locations

2022 ◽  
Vol 226 (1) ◽  
pp. S167
Author(s):  
Hooman Tadbiri ◽  
Shifa Turan ◽  
Graham Aberdeen ◽  
Brittany Kelley ◽  
Arica Stockett ◽  
...  
Keyword(s):  
Spiral Artery

scholarly journals Male Fetal Sex Affects Uteroplacental Angiogenesis in Growth Restriction Mouse Model†

2021 ◽  
Author(s):  
Jessica F Hebert ◽  
Jess A Millar ◽  
Rahul Raghavan ◽  
Amie Romney ◽  
Jason E Podrabsky ◽  
...  
Keyword(s):  
Mouse Model ◽  
Killer Cell ◽  
Receptor Activation ◽  
Growth Restriction ◽  
Late Gestation ◽  
Spiral Artery ◽  
Micro Computed Tomography ◽  
Fetal Sex ◽  
Maternal Genotype ◽  
Agt Gene

Abstract Abnormally increased angiotensin II activity related to maternal angiotensinogen (AGT) genetic variants, or aberrant receptor activation, is associated with small-for-gestational-age (SGA) babies and abnormal uterine spiral artery remodeling in humans. Our group studies a murine AGT gene titration transgenic (TG; 3-copies of the AGT gene) model, which has a 20% increase in AGT expression mimicking a common human AGT genetic variant (A[−6]G) associated with intrauterine growth restriction (IUGR) and spiral artery pathology. We hypothesized that aberrant maternal AGT expression impacts pregnancy-induced uterine spiral artery angiogenesis in this mouse model leading to IUGR. We controlled for fetal sex and fetal genotype (e.g., only 2-copy wild-type [WT] progeny from WT and TG dams were included). Uteroplacental samples from WT and TG dams from early (days 6.5 and 8.5), mid (d12.5), and late (d16.5) gestation were studied to assess uterine natural killer cell (uNK) phenotypes, decidual metrial triangle angiogenic factors, placental growth and capillary density, placental transcriptomics, and placental nutrient transport. Spiral artery architecture was evaluated at day 16.5 by contrast-perfused three-dimensional micro-computed tomography (3D microCT). Our results suggest that uteroplacental angiogenesis is significantly reduced in TG dams at day 16.5. Males from TG dams are associated with significantly reduced uteroplacental angiogenesis from early to late gestation compared with their female littermates and WT controls. Angiogenesis was not different between fetal sexes from WT dams. We conclude that male fetal sex compounds the pathologic impact of maternal genotype in this mouse model of growth restriction.

scholarly journals Understanding the uterine artery Doppler waveform and its relationship to spiral artery remodelling

Placenta ◽  
2021 ◽  
Vol 105 ◽  
pp. 78-84
Author(s):  
Claire Lloyd-Davies ◽  
Sally L. Collins ◽  
Graham J. Burton
Keyword(s):  
Uterine Artery ◽  
Spiral Artery ◽  
Uterine Artery Doppler ◽  
Doppler Waveform

Association of VEGF and p53 Polymorphisms and Spiral Artery Remodelling in Recurrent Pregnancy Loss: A Systematic Review and Meta-analysis

2021 ◽  
Author(s):  
Tamilmani Subi ◽  
Vinodhini Krishnakumar ◽  
Chandreswara Raju Kataru ◽  
Inusha Panigrahi ◽  
Meganathan Kannan
Keyword(s):  
Risk Factor ◽  
Risk Ratio ◽  
Pregnancy Loss ◽  
Recurrent Pregnancy Loss ◽  
Meta Analysis ◽  
Mixed Population ◽  
Relative Risk Ratio ◽  
Spiral Artery ◽  
Prevalence Odds Ratio ◽  
Increased Risk

Many studies have reported the association of VEGF-1154G/A, VEGF 936C/T and p53 Arg72Pro polymorphisms with Recurrent Pregnancy Loss (RPL), but the outcomes are inconsistent. We have used meta-analysis to associate these polymorphisms with RPL, having the spiral artery remodelling as a major risk factor. The studies were identified from three different reputed databases, namely Science direct, PubMed/Medline and Scopus. The eligible studies of VEGF-1154G/A, VEGF 936C/T and p53Arg72Pro polymorphisms associated with the RPL were selected for the analysis. They were segregated into three different ethnic groups as Asians, Caucasians and mixed population. For the analysis, the overall prevalence, Odds ratio, Risk ratio, Relative risk ratio and P values were calculated. A total of 3241 RPL cases and 3205 healthy controls from 21 different case-control studies were analysed. RPL was highly prevalent in mixed population with VEGF-1154G/A and p53 Arg72Pro polymorphisms (70.04% and 66.46% respectively) and in Asian population with VEGF 936C/T polymorphism (53.58%). The homozygous recessive genotypes of VEGF and p53 exhibited significant association between the respective polymorphisms and RPL along with the increased risk of outcome. The current analysis conclusively reports the geographic distribution of the different genetic polymorphisms which shows high association with the progression of RPL. Understanding the spectrum of polymorphisms on different population with the spiral artery remodelling as a risk factor encloses the importance of the vasculature during the pregnancy.

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