Related Experiment Video

Updated: May 13, 2026

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway
07:15

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway

Published on: August 23, 2024

The antihepatic fibrotic effects of fluorofenidone via MAPK signalling pathways

Yu Peng1, Huixiang Yang, Tingting Zhu

  • 1Department of Nephropathy, Xiangya Hospital, Central South University, Changsha, China.

European Journal of Clinical Investigation
|February 27, 2013
PubMed
Abstract

Insights

Fluorofenidone (AKF-PD) effectively inhibits liver fibrosis by suppressing hepatic stellate cell activation and proliferation. This novel pyridone agent targets the MAPK signaling pathway, offering a potential therapeutic strategy for liver fibrosis.

Area of Science:

  • Pharmacology
  • Hepatology
  • Molecular Biology

Background:

  • Liver fibrosis is a significant health concern.
  • Hepatic stellate cells (HSCs) play a crucial role in liver fibrosis progression.
  • Novel therapeutic agents are needed to combat liver fibrosis.

Purpose of the Study:

  • To investigate the inhibitory effects of Fluorofenidone (AKF-PD) on dimethylnitrosamine (DMN)-induced liver fibrosis in rats.
  • To elucidate the molecular mechanisms underlying AKF-PD's action, particularly concerning HSCs.
  • To compare AKF-PD with pirfenidone (PFD) in a liver fibrosis model.

Main Methods:

  • Wistar rats were induced with liver fibrosis using DMN and treated with AKF-PD or PFD.
  • In vitro studies utilized activated HSC cell lines (CFSC-2G and LX2).
  • Assessed cell proliferation (MTT), collagen I expression (immunohistochemistry, RT-PCR), and key protein/gene markers (α-SMA, TIMP-1, ERK1/2, p38, JNK) via RT-PCR and Western blot.

Main Results:

  • AKF-PD significantly reduced HSC proliferation and activation, indicated by decreased α-SMA and TIMP-1.
  • AKF-PD attenuated PDGF-BB-induced phosphorylation of ERK1/2, p38, and JNK signaling pathways.
  • In vivo, AKF-PD treatment lessened liver injury and fibrosis, reducing collagen I, α-SMA, and TIMP-1 expression.

Conclusions:

  • Fluorofenidone (AKF-PD) demonstrates potent antifibrotic effects in a rat model.
  • AKF-PD suppresses HSC proliferation and activation through the MAPK signaling pathway.
  • AKF-PD represents a promising therapeutic candidate for treating liver fibrosis.

More Related Videos

Drug-Induced Senescence in Liver Cells Promotes M2 Macrophage Polarization: Implications for Tyrosine Kinase Inhibitor-Associated Hepatotoxicity09:32

Drug-Induced Senescence in Liver Cells Promotes M2 Macrophage Polarization: Implications for Tyrosine Kinase Inhibitor-Associated Hepatotoxicity

Published on: October 17, 2025

Related Concept Videos

Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow01:26

Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow

Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug binding...
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...
Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...