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Published on: July 13, 2014
Effect of prenatal ethanol administration on microvillus membrane glycosylation in developing rat intestine
Sonali Bhalla1, Kamaljit Kaur, Akhtar Mahmood
1Department of Biochemistry, Panjab University.
Insights
Prenatal ethanol exposure in rats reduced pup growth and altered intestinal microvillus membrane glycosylation. This suggests potential impairments in gut function during development due to maternal alcohol consumption.
Area of Science:
- Developmental Biology
- Toxicology
- Gastroenterology
Background:
- Prenatal ethanol exposure is a significant concern for developmental health.
- Ethanol's impact on organ development, particularly the gastrointestinal tract, requires further investigation.
- Glycosylation patterns are crucial for intestinal function and development.
Purpose of the Study:
- To investigate the effects of prenatal ethanol exposure on microvillus membrane glycosylation in the developing rat intestine.
- To assess the impact of in utero ethanol administration on the growth and intestinal parameters of offspring.
Main Methods:
- In utero ethanol administration to pregnant rats.
- Measurement of pup body weight, intestinal length, and weight.
- Biochemical analysis of brush border membranes to determine hexose, sialic acid, and fucose content.
- Calculation of the fucose-sialic acid molar ratio.
Main Results:
- Prenatal ethanol exposure did not alter gestation length but reduced litter size.
- Offspring exposed to ethanol in utero exhibited significantly lower body weight, intestinal length, and weight.
- Increased total hexoses and sialic acid content, with a significant decrease in fucose content, were observed in brush border membranes.
- A reduced fucose-sialic acid molar ratio was noted in ethanol-exposed pups across all age groups.
Conclusions:
- Prenatal ethanol exposure significantly alters the glycosylation pattern of the developing rat intestine.
- These alterations in intestinal glycosylation may negatively impact postnatal intestinal function.
- Maternal ethanol consumption during gestation poses a risk to normal intestinal development in offspring.
Abstract:
Effect of prenatal ethanol exposure has been studied on microvillus membrane glycosylation in developing rat intestine. In utero ethanol administration did not affect the gestation period but reduced litter size in ethanol-exposed group. Body weight, intestinal length and weight of pups born to ethanol-exposed rats during gestation, aged 4 to 30 days were significantly low compared to the respective controls. Total hexoses (p < 0.05) and sialic acid (p < 0.05, p < 0.01) contents of purified brush border membranes increased in pups exposed to ethanol prenatally, while the fucose content showed significant (p < 0.05, p < 0.01) decrease. The fucose-sialic acid molar ratio was also low in all age-groups of prenatally ethanol-exposed pups, compared to respective controls. The results indicate that ethanol ingestion during gestation alters the glycosylation pattern of intestine in rats, which may impair its functions during postnatal development.
