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Amnio-allantoic fluid exchange for the prevention of intestinal damage in gastroschisis: an experimental study on
1Department of Pediatric Surgery, Dokuz Eylül University, Medical Faculty, Izmir, Turkey.
Insights
Amniotic fluid exchange in a gastroschisis model reduced fetal bowel damage by decreasing urine products. This suggests antenatal intervention may protect developing intestines in human fetuses.
Area of Science:
- Developmental biology
- Fetal surgery
- Neonatal research
Background:
- Gastroschisis causes fetal intestinal damage due to urine components in amniotic fluid.
- Intestinal changes include shortening, thickening, and fibrosis, exacerbated by urinary products.
Purpose of the Study:
- To investigate the efficacy of amnio-allantoic fluid exchange in mitigating intestinal damage in a chick embryo model of gastroschisis.
- To assess the impact of reducing urinary products on fetal bowel development.
Main Methods:
- Utilized a chick embryo model to simulate gastroschisis.
- Implemented amnio-allantoic fluid exchange in a subset of gastroschisis embryos.
- Compared control, gastroschisis-only, and gastroschisis-plus-exchange groups.
Main Results:
- The gastroschisis-plus-exchange group showed significantly lower creatinine levels (P < .05) and slightly reduced urea concentrations compared to the gastroschisis-only group.
- Macroscopic and microscopic analyses revealed normal or mildly edematous bowel in the exchange group, contrasting with severe fibrosis and thickening in the gastroschisis-only group.
Conclusions:
- Antenatal amniotic fluid exchange effectively reduced fetal intestinal damage in the gastroschisis model.
- This intervention may offer a potential strategy to minimize bowel injury in human fetuses with gastroschisis.
Abstract:
In gastroschisis, the protruding intestine is usually shortened, thickened, and covered with a fibrous peel. Urine components, which are increased in the amniotic fluid with the onset of renal function, are responsible for these changes. In the chick embryo model of gastroschisis, the authors performed amnio-allantoic fluid exchange to reduce the effect of urinary products. There were three study groups: control, gastroschisis only, and gastroschisis plus exchange. There was a significant decrease in creatinine (P < .05) and a slight decrease in urea concentrations in the gastroschisis-plus-exchange group compared with the gastroschisis-only group. Whereas macroscopic and microscopic studies showed severe fibrosis and bowel-wall thickening in the latter group, the bowel was normal or slightly oedematous in the former. On the basis of this study, the authors suggest that antenatal amniotic fluid exchange might reduce the bowel damage in human foetuses.