Abstract：
:Betaine alleviates high-fat diet-induced fatty liver and prenatal betaine programs offspring hepatic lipid metabolism. Excessive corticosterone (CORT) exposure causes fatty liver in chickens, yet it remains unknown whether and how prenatal betaine modulates the susceptibility of CORT-induced fatty liver later in life. In this study, fertilized eggs were injected with saline or betaine before incubation, and the hatchlings were raised at 8 weeks of age followed by 7 days of subcutaneous CORT injection. CORT-induced fatty liver was less severe in betaine-treated chickens, with significantly reduced oil-red staining and hepatic triglyceride content (P < 0.05). The protective effect of prenatal betaine was associated with significantly up-regulated expression of PPARα and CPT1α, as well as mitochondrial DNA (mtDNA)-encoded genes (P < 0.05). Moreover, betaine rescued CORT-induced alterations in methionine cycle genes, which coincided with modifications of CpG methylation on CPT1α gene promoter and mtDNA D-loop regions. Furthermore, the elevation of hepatic GR protein content after CORT treatment was significantly reduced (P < 0.05), while the reduction of GR binding to the control region of affected genes was significantly increased (P < 0.05), in betaine-treated chickens. These results indicate that in ovo betaine injection protects the juvenile chickens from CORT-induced fatty liver.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hu Y,Sun Q,Liu J,Jia Y,Cai D,Idriss AA,Omer NA,Zhao Rdoi
10.1038/srep40251subject
Has Abstractpub_date
2017-01-06 00:00:00pages
40251issn
2045-2322pii
srep40251journal_volume
7pub_type
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