Kourouma A, Keita H, Duan P, Quan C, Bilivogui KK, Qi S, Christiane NA, Osamuyimen A, Yang K. Effects of 4-nonylphenol on oxidant/antioxidant balance system inducing hepatic steatosis in male rat.
Toxicol Rep 2015;
2:1423-33. [PMID:
28962484 DOI:
10.1016/j.toxrep.2015.10.006]
[Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 10/04/2015] [Accepted: 10/12/2015] [Indexed: 12/30/2022] Open
Abstract
Intraperitoneal administration of 4-NP induces hepatic steatosis in male Sprague-Dawley rats.
Hepatocytes apoptosis is highly implicated in the occurrence and development of NAFLD.
Hepatic mitochondrial disturbance promotes deleterious consequences, such as OS and accumulation of triglycerides (steatosis).
An emerging literature suggests that early life exposure to 4-nonylphenol (4-NP), a widespread endocrine disrupting chemical, may increase the risk of metabolic syndrome. In this study, we investigated the hypothesis that intraperitoneal administration of 4-NP induces hepatic steatosis in rat. 24 male Sprague-Dawley rats were administered with 4-NP (0, 2, 10 and 50 mg/kg b.wt) in corn oil for 30 days. Liver histology, biochemical analysis and gene expression profiling were examined. After treatment, abnormal liver morphology and function were observed in the 4-NP-treated rat, and significant changes in gene expression an indicator of hepatic steatosis and apoptosis were observed compared with controls. Up-regulated genes involved in apoptosis, hepatotoxity and oxidative stress, increased ROS and decrease of antioxidant enzyme were observed in the 4-NP exposed rat. Extensive fatty accumulation in liver section and elevated serum GOT, GPT, LDH and γ-GT were also observed. Incidence and severity of liver steatosis was scored and taken into consideration (steatosis, ballooning and lobular inflammation). Hepatocytes apoptosis could promote NAFLD progression; Fas/FasL, TNF-α and Caspase-9 mRNA activation were important contributing factors to hepatic steatosis. These findings provide the first evidence that 4-NP affects the gene expression related to liver hepatotoxicity, which is correlated with hepatic steatosis.
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