Dibutyl phthalate (DBP) promotes Epithelial-Mesenchymal Transition (EMT) to aggravate liver fibrosis into cirrhosis and portal hypertension (PHT) via ROS/TGF-β1/Snail-1 signalling pathway in adult rats

Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved..

OBJECTIVE: The primary objective of this study was to investigate the toxicological impact of Dibutyl phthalate (DBP) on the process of liver fibrosis transitioning into cirrhosis and the subsequent development of portal hypertension (PHT) through the mechanism of epithelial-mesenchymal transition (EMT) mediated by the ROS/TGF-β/Snail-1 signaling pathway.

METHOD: Carbon tetrachloride (CCl4) (1 mg/kg) was introduced in adult rats by oral feeding in CCl4 and CCl4+DBP groups twice a week for 8 weeks, and twice for another 8 week in CCl4 group. DBP was introduced by oral feeding in the CCl4+DBP group twice over the following 8 weeks. We subsequently analyzed hemodynamics measurements and liver cirrhosis degree, hepatic inflammation and liver function in the different groups. EMT related genes expression in rats in the groups of Control, DBP, CCl4 and CCl4+DBP were measured by immunohistochemistry (IHC). Enzyme-linked immunosorbent Assay (ELISA), qRT-PCR, western blot were used to detect the EMT related proteins and mRNA gene expression levels in rats and primary hepatocytes (PHCs). Reactive oxygen species (ROS) were examined with a ROS detection kit.

RESULTS: The results showed that the CCl4+DBP group had higher portal pressure (PP) and lower mean arterial pressure (MAP) than the other groups. Elevated collagen deposition, profibrotic factor, inflammation, EMT levels were detected in DBP and CCl4+DBP groups. ROS, TGF-β1 and Snail-1 were highly expressed after DBP exposure in vitro. TGF-β1 had the potential to regulate Snail-1, and both of them were subject to regulation by ROS.

CONCLUSION: DBP could influence the progression of EMT through its toxicological effect by ROS/TGF-β1/Snail-1 signalling pathway, causing cirrhosis and PHT in final. The findings of this research might contribute to a novel comprehension of the underlying toxicological mechanisms and animal model involved in the progression of cirrhosis and PHT, and potentially offered a promising therapeutic target for the treatment of the disease.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:274

Enthalten in:

Ecotoxicology and environmental safety - 274(2024) vom: 01. Apr., Seite 116124

Sprache:

Englisch

Beteiligte Personen:

Chen, Min [VerfasserIn]
Wu, Guang-Bo [VerfasserIn]
Hua, Shan [VerfasserIn]
Zheng, Lei [VerfasserIn]
Fan, Qiang [VerfasserIn]
Luo, Meng [VerfasserIn]

Links:

Volltext

Themen:

2286E5R2KE
Animal model
Cirrhosis
Dibutyl Phthalate
Dibutyl phthalate
Epithelial-Mesenchymal Transition
Journal Article
Portal hypertension
Reactive Oxygen Species
Snai1 protein, rat
Snail Family Transcription Factors
Transforming Growth Factor beta1

Anmerkungen:

Date Completed 29.03.2024

Date Revised 09.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ecoenv.2024.116124

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369927117