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Examining the Relationship Between Gastroschisis and Placental Fetal Vascular Malperfusion
Brittany Ruschkowski1, Ahmed Nasr1,2, Irina Oltean2
1Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.
Insights
Gastroschisis is linked to placental fetal vascular malperfusion (FVM) and villous maldevelopment. These placental issues may offer insights into the causes of gastroschisis, a birth defect involving abdominal wall defects.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Pathology
- Developmental Biology
Background:
- Gastroschisis is a congenital defect with unknown causes, though maternal smoking, alcohol use, and young age are risk factors.
- Previous research linked gastroschisis to delayed placental villous maturation.
- This study investigated further placental pathologies associated with gastroschisis.
Purpose of the Study:
- To identify additional placental pathologies associated with gastroschisis.
- To explore potential insights into the pathogenesis of gastroschisis through placental examination.
Main Methods:
- Retrospective review of 29 gastroschisis placentas and 30 control placentas.
- Standardized collection of gross and histological data.
- Comparison of placental pathologies between gastroschisis and control groups.
Main Results:
- Gastroschisis was significantly associated with increased placental fetal vascular malperfusion (FVM) (62% vs. 0%, p < 0.0001).
- Gastroschisis was also significantly associated with increased placental villous maldevelopment (76% vs. 3%, p < 0.0001).
Conclusions:
- The study found a strong association between gastroschisis and placental FVM.
- FVM may result from vascular disruption or early pregnancy thrombosis.
- Further research is required to elucidate the causal relationship between gastroschisis and placental FVM.
Introduction:
Gastroschisis is a congenital malformation characterized by intestinal herniation through an abdominal wall defect. Despite its unknown pathogenesis, known risk factors include maternal smoking, alcohol use, and young maternal age. Previous work has shown that gastroschisis is associated with placental delayed villous maturation, and the goal of this study was to assess for additional associated placental pathologies that may help clarify the pathogenesis of gastroschisis.
Methods:
We conducted a retrospective slide review of 29 placentas of neonates with gastroschisis. Additionally, we reviewed pathology reports from one control group of 30 placentas with other congenital malformations. Gross and histological data were collected based on a standardized rubric.
Results:
Gastroschisis was associated with increased placental fetal vascular malperfusion (FVM) in 62% of cases (versus 0% of controls, p < 0.0001). It was also associated with increased placental villous maldevelopment in 76% of cases (versus 3% of controls, p < 0.0001).
Conclusion:
Our study demonstrates an association between gastroschisis and FVM. While FVM could be the consequence of vascular disruption due to the ventral location of gastroschisis, it could also reflect estrogen-induced thrombosis in early pregnancy. Further research is needed to separate these possibilities and determine the cause of the placental FVM observed in gastroschisis.
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