ACTA HISTOCHEMICA ET CYTOCHEMICA
Online ISSN : 1347-5800
Print ISSN : 0044-5991
ISSN-L : 0044-5991
REGULAR ARTICLE
The Effect of Estrogen on Hepatic Fat Accumulation during Early Phase of Liver Regeneration after Partial Hepatectomy in Rats
Naparee SrisowannaNarantsog ChoijookhuuKoichi YanoBaatarsuren BatmunkhMakoto IkenoueNguyen Nhat Huynh MaiYuya YamaguchiYoshitaka Hishikawa
Author information
JOURNALS FREE ACCESS FULL-TEXT HTML

2019 Volume 52 Issue 4 Pages 67-75

Details
Abstract

Fatty liver is common in men and post-menopausal women, suggesting that estrogen may be involved in liver lipid metabolism. The aim of this study is to be clear the role of estrogen and estrogen receptor alpha (ERα) in fat accumulation during liver regeneration using the 70% partial hepatectomy (PHX) model in male, female, ovariectomized (OVX) and E2-treated OVX (OVX-E2) rats. Liver tissues were sampled at 0–48 hr after PHX and fat accumulation, fatty acid translocase (FAT/CD36), sterol regulatory element-binding protein (SREBP1c), peroxisome proliferator-activated receptor α (PPARα), proliferative cell nuclear antigen (PCNA) and ERα were examined by Oil Red O, qRT-PCR and immunohistochemistry, respectively. Hepatic fat accumulation was abundant in female and OVX-E2 compared to male and OVX rats. FAT/CD36 expression was observed in female, OVX and OVX-E2 at 0–12 hr after PHX, but not in male rats. At 0 hr, SREBP1c and PPARα were elevated in female and male rats, respectively, but were decreased after PHX in all rats. The PCNA labeling index reached a maximum at 36 hr and 48 hr in OVX-E2 and OVX rats, respectively. ERα expression in OVX-E2 was higher than OVX at 0–36 hr after PHX. In conclusion, these results indicated that estrogen and ERα might play an important role in fat accumulation related to FAT/CD36 during early phase of rat liver regeneration.

Information related to the author
© 2019 The Japan Society of Histochemistry and Cytochemistry
Previous article Next article
feedback
Top