ArticlePoultry science2024
Betaine supplementation alleviates corticosterone-induced hepatic cholesterol accumulation through epigenetic modulation of HMGCR and CYP7A1 genes in laying hens.
Article in Poultry science, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 12 citations in OpenAlex.
- Dietary betaine alleviates corticosterone-induced intestinal barrier dysfunction in laying hens possibly by promoting tight junction protein expression via mPoultry science · 2026Article
- Postbiotic GABA and Lactobacillus plantarum 1-2-3 Alleviate Corticosterone-induced Abdominal Fat Deposition in Laying Hens by Suppressing Adipogenesis and Enhancing Lipolysis.Probiotics and antimicrobial proteins · 2026Article
- Dietary glucuronolactone alleviates hepatic lipid accumulation via the enterohepatic axis in laying hens.Journal of animal science and biotechnology · 2026Article
- Functional Foods as Modulators of Epigenetic Mechanisms Affecting Metabolic Health in Adolescence.International journal of molecular sciences · 2026Review
- Betaine as a regulator of metabolism, epigenetics, and cellular osmoprotection: therapeutic implications in cardiometabolic and renal diseases.Frontiers in pharmacology · 2026Review
- Article
- Fermented Chinese Herbs Improved Egg Production, Egg Shell Quality, and Egg Yolk Cholesterol of Laying Hens by Regulating Estrogen, Lipid Metabolism, and Calcium Metabolism.Animals : an open access journal from MDPI · 2025Article
- Parental betaine supplementation promotes hepatic conversion of cholesterol to bile acids in offspring goslings with epigenetic modulation of CYP7A1 gene.Animal bioscience · 2025Article
- Primordial germ cells as a potential model for understanding (Nutri) epigenetic - metabolic interactions: a mini review.Frontiers in cell and developmental biology · 2025Review
- Dietary bile acids alleviate corticosterone-induced fatty liver and hepatic glucocorticoid receptor suppression in broiler chickens.Journal of animal science · 2024Article
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7 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Excessive corticosterone (CORT) exposure could cause hepatic cholesterol accumulation in chickens and maternal betaine supplementation could decrease hepatic cholesterol deposition through epigenetic modifications in offspring chickens. Nevertheless, it remains uncertain whether providing betaine to laying hens could protect CORT-induced hepatic cholesterol accumulation via epigenetic mechanisms. This study aimed to examine the effects of dietary betaine on plasma and hepatic cholesterol contents, expression of cholesterol metabolic genes, as well as DNA methylation on their promoters in the liver of laying hens exposed to CORT. A total of 72 laying hens at 130 d of age were randomly divided into 3 groups: control (CON), CORT, and CORT+betaine (CORT+BET) groups. The experiment lasted for 35 d. Chickens in CON and CORT groups were fed a basal diet, whereas the CORT+BET group chickens were fed the basal diet supplemented with 0.1% betaine for 35 d. On d 28 of the experiment, chickens in CORT and CORT+BET groups received daily subcutaneous injections of CORT (4.0 mg/kg body weight), whereas the CON group chickens were injected with an equal volume of solvent for 7 d. The results showed that CORT administration led to a significant increase (P < 0.05) in the contents of cholesterol in plasma and liver, associated with activation (P < 0.05) of sterol regulatory element binding transcription factor 2 (SREBP2), 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), lecithin-cholesterol acyltransferase (LCAT) and low-density lipoprotein receptor (LDLR) genes expression, and inhibition of cholesterol-7-alpha hydroxylase (CYP7A1) and sterol 27-hydroxylase (CYP27A1) genes expression in the liver compared to the CON. In contrast, CORT-induced up-regulation of HMGCR mRNA and protein abundances and downregulation of CYP7A1 mRNA and protein abundances were completely normalized (P < 0.05) by betaine supplementation. Besides, CORT injection led to significant hypomethylation (P < 0.05) on HMGCR promoter and hypermethylation (P < 0.05) on CYP7A1 promoter. Moreover, dietary betaine rescued (P < 0.05) CORT-induced changes in methylation status of HMGCR and CYP7A1 genes promoters. These results indicate that dietary betaine addition protects laying hens from CORT-induced hepatic cholesterol accumulation via epigenetic modulation of HMGCR and CYP7A1 genes.
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