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Bulk liver transcriptomics from control and TPN-fed neonatal pigs

ABSTRACT: Bulk liver transcriptomics from control and TPN-fed neonatal pigs

PROVIDER: PRJNA934858 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23455000.fastq.gz	Fastqsanger.gz
	SRR23455001.fastq.gz	Fastqsanger.gz
	SRR23455002.fastq.gz	Fastqsanger.gz
	SRR23454993.fastq.gz	Fastqsanger.gz
	SRR23454994.fastq.gz	Fastqsanger.gz

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Bulk liver transcriptomics from control and TPN-fed neonatal pigs

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Project description:The majority of babies in the US are formula-fed instead of breast fed. There are major differences in the composition of formulas and breast milk and yet little is known about metabolic differences in babies as the result of feeding these very different diets and how that might affect development or disease risk in later life. One concern is that soy-based formulas might have adverse health effects in babies as a result of the presence of low levels of estrogenic phytochemicals genistein and daidzein which are normally present in soy beans. In the current study, we used a piglet model to look at this question. Piglets were either fed breast milk from the sow or were fed two different infant formulas (cow's milk-based or soy-based) from age 2 days to 21 days when pigs are normally weaned onto solid food. Blood glucose and lipids were measured. Formula-fed pigs were found to have lower cholesterol than breast fed piglets and in addition had larger stores of iron in their liver.Microarray analysis was carried out to see if changes in liver gene expression could explain these effects of formula feeding. It was found that overall gene expression profiles were influenced by formula feeding compared to breast fed neonates. Gender-independent and unique effects of formula influenced cholesterol and iron metabolism. Further, soy formula feeding in comparison to milk-based formula failed to reveal any estrogenic actions on hepatic gene expression in either male or female pigs. Piglets (female, male) were either fed breast milk from the sow or were fed two different infant formulas (cow's milk-based or soy-based) from age 2 days to 21 days when pigs are normally weaned onto solid food.

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Project description:Biliary atresia (BA) is a pediatric liver disease that often necessitates parenteral nutrition (PN) to support growth due to impaired liver function. While soy oil lipid emulsions (SLE) are commonly used in PN, they may contribute to cholestatic liver injury. In contrast, mixed oil lipid emulsions (MLE) have shown promise in preventing cholestasis in non-BA infants, potentially by restoring bile flow. However, their effectiveness in cases of complete bile duct obstruction, as seen in BA, remains uncertain. To explore the potential benefits of MLE in BA, we utilized a neonatal pig model of bile duct ligation (BDL). Pigs underwent either BDL or sham surgery and were subsequently fed either MLE or SLE via PN, or enterally with formula. The MLE-BDL pigs exhibited significantly greater weight gain compared to those fed SLE or formula enterally. Additionally, MLE-BDL pigs showed higher serum bile acid and gamma-glutamyl transferase concentrations compared to SLE-BDL pigs. However, no significant differences in liver injury, assessed by ductular reaction or fibrosis, were observed between MLE- and SLE-BDL pigs. Based on weight gain alone, MLE may be a superior lipid emulsion for use in neonates with obstructive cholestasis.

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