Mitochondrial stress response in drug-induced liver injury

Jing Zheng1,2, Qiulin Yuan1, Cao Zhou1

  • 1Department of Microbiology and Immunology, The Institute of Infection and Inflammation, Medical College, China Three Gorges University, No. 8 DaXue Road, Yichang, 443002, Hubei, China.

Insights

Drug-induced liver injury (DILI) involves reactive metabolites damaging mitochondria. The mitochondrial stress response may offer protective effects against DILI, guiding clinical treatments.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Toxicology

Background:

  • Drug-induced liver injury (DILI) is a common health issue stemming from various ingested substances.
  • DILI mechanisms involve reactive metabolites, mitochondrial oxidative stress, and permeability transition pore opening, leading to cell death.
  • Mitochondria are vital for cellular ATP production and signaling, but susceptible to drug-induced impairment.

Purpose of the Study:

  • To review current research on the protective role of the mitochondrial stress response in DILI.
  • To explore potential mechanisms underlying the protective effects of mitochondrial stress response in DILI.
  • To offer insights for the clinical management of DILI.

Main Methods:

  • Literature review of frontier research on mitochondrial stress response in DILI.
  • Analysis of studies detailing the mechanisms of DILI and mitochondrial involvement.
  • Synthesis of findings to connect mitochondrial stress response to DILI protection.

Main Results:

  • Mitochondrial stress response acts as an adaptive mechanism against cellular damage when homeostasis is threatened.
  • Drug-induced stress can impair mitochondrial function, but the stress response may mitigate this.
  • Research highlights the potential of targeting mitochondrial pathways for DILI treatment.

Conclusions:

  • The mitochondrial stress response shows promise as a protective factor against DILI.
  • Understanding these mechanisms can inform novel therapeutic strategies for DILI.
  • Further research into mitochondrial protection could revolutionize DILI treatment.

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...
34
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...
36
Effect of Hepatic Disease on Pharmacokinetics: Active Drug, Metabolite and Fraction of Metabolized Drug01:14

Effect of Hepatic Disease on Pharmacokinetics: Active Drug, Metabolite and Fraction of Metabolized Drug

In pharmacotherapy, monitoring drug concentrations is paramount, especially for drugs whose therapeutic effects hinge on both the active compound and its metabolite. Hepatic impairment profoundly influences drug potency by altering liver function. If the drug is more potent than its metabolite, impaired liver function amplifies drug activity due to elevated drug concentration levels. Conversely, if the metabolite holds greater potency, diminished liver function diminishes drug activity by...
27
Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
15.4K
Drug Metabolism: Phase I Reactions01:17

Drug Metabolism: Phase I Reactions

A phase I reaction is a biochemical process that introduces a functionally reactive polar group to a substance. This transformation predominantly occurs in the liver, facilitated by the cytochrome P450 system of hemoproteins situated in the lipophilic endoplasmic reticulum of cells. The metabolite generated through this process can have varying polarities. If it is sufficiently polar, it can be easily excreted in the urine due to its water compatibility. However, if the metabolite is nonpolar,...
4.0K
Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment01:08

Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment

Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...
37