Proteomics analysis to identify and characterize the molecular signatures of hepatic steatosis in ovariectomized rats as a model of postmenopausal status

Chen Chung Liao, Yen Shuo Chiu, Wan Chun Chiu, Yu Tang Tung, Hsiao Li Chuang, Jyh Horng Wu, Chi Chang Huang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Postmenopausal women are particularly at increased risk of developing non-alcoholic fatty liver disease (NAFLD). Here we aimed to determine the impact of postmenopausal-induced NAFLD (PM-NAFLD) in an ovariectomized rat model. Sixteen six-week-old Sprague-Dawley female rats were randomly divided into two groups (eight per group), for sham-operation (Sham) or bilateral ovariectomy (Ovx). Four months after surgery, indices of liver damage and liver histomorphometry were measured. Both serum aspartate aminotransferase (AST) and alanine aminotranferease (ALT) levels were significantly higher in the Ovx than Sham group. We performed quantitative LC-MS/MS-based proteomic profiling of livers from rats with PM-NAFLD to provide baseline knowledge of the PM-NAFLD proteome and to investigate proteins involved in PM-NAFLD by ingenuity pathways analysis (IPA) to provide corroborative evidence for differential regulation of molecular and cellular functions affecting metabolic processes. Of the 586 identified proteins, the levels of 59 (10.0%) and 48 (8.2%) were significantly higher and lower, respectively, in the Ovx group compared to the Sham group. In conclusion, the changes in regulation of proteins implicated in PM-NAFLD may affect other vital biological processes in the body apart from causing postmenopause-mediated liver dysfunction. Our quantitative proteomics analysis may also suggest potential biomarkers and further clinical applications for PM-NAFLD.

Original languageEnglish
Article numberA39
Pages (from-to)8752-8766
Number of pages15
JournalNutrients
Volume7
Issue number10
DOIs
Publication statusPublished - 2015

Fingerprint

fatty liver
Proteomics
proteomics
liver
Liver
rats
postmenopause
ovariectomy
proteins
disease models
proteome
aspartate transaminase
alanine
biomarkers
surgery
Postmenopause
animal models
Biological Phenomena
Proteins
Ovariectomy

Keywords

  • Ingenuity pathways analysis
  • Liver
  • Proteome

ASJC Scopus subject areas

  • Food Science

Cite this

Proteomics analysis to identify and characterize the molecular signatures of hepatic steatosis in ovariectomized rats as a model of postmenopausal status. / Liao, Chen Chung; Chiu, Yen Shuo; Chiu, Wan Chun; Tung, Yu Tang; Chuang, Hsiao Li; Wu, Jyh Horng; Huang, Chi Chang.

In: Nutrients, Vol. 7, No. 10, A39, 2015, p. 8752-8766.

Research output: Contribution to journalArticle

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