Related Experiment Video

Updated: Jun 13, 2026

Imaging Approaches to Assessments of Toxicological Oxidative Stress Using Genetically-encoded Fluorogenic Sensors
09:33

Imaging Approaches to Assessments of Toxicological Oxidative Stress Using Genetically-encoded Fluorogenic Sensors

Published on: February 7, 2018

Mechanisms of MDMA (ecstasy)-induced oxidative stress, mitochondrial dysfunction, and organ damage

Byoung-Joon Song1, Kwan-Hoon Moon, Vijay V Upreti

  • 1Laboratory of Membrane Biochemistry and Biophysics, National Institute on Alcohol Abuse and Alcoholism, 9000 Rockville Pike, Bethesda, MD 20892, USA. bj.song@nih.gov

Current Pharmaceutical Biotechnology
|April 28, 2010
PubMed

Insights

This review explores how 3,4-methylenedioxymethamphetamine (MDMA) causes organ damage through mitochondrial protein oxidation and dysfunction. It highlights a proteomics method for identifying these changes and discusses drug interactions.

Area of Science:

  • Toxicology
  • Biochemistry
  • Proteomics

Background:

  • 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) toxicity is widely reported, yet mechanisms of organ damage remain unclear.
  • Existing research extensively covers MDMA-induced oxidative stress and tissue damage.
  • This review focuses on oxidative modifications of mitochondrial proteins and subsequent dysfunction.

Purpose of the Study:

  • To update mechanistic studies on MDMA-mediated organ damage, emphasizing oxidative stress.
  • To investigate the role of oxidized mitochondrial proteins in MDMA-induced organ damage.
  • To discuss synergistic drug interactions and the application of redox-based proteomics in developing countermeasures.

Main Methods:

  • A Cys-targeted proteomics method using biotin-N-maleimide (biotin-NM) to identify oxidatively modified mitochondrial proteins.
  • Systematic identification of oxidized mitochondrial proteins in control versus MDMA-exposed rat models.
  • Discussion of alternative proteomic approaches to address potential limitations.

Main Results:

  • MDMA exposure leads to oxidative modifications of mitochondrial proteins, causing mitochondrial dysfunction.
  • The described proteomics method effectively identifies these critical protein alterations.
  • Synergistic interactions between MDMA and other substances like alcohol exacerbate damage.

Conclusions:

  • Oxidative modification of mitochondrial proteins is a key mechanism in MDMA-induced organ damage.
  • Redox-based proteomics offers a valuable tool for studying MDMA toxicity and developing therapeutic strategies.
  • Understanding drug interactions is crucial for preventing and treating MDMA-related harm.

More Related Videos

High Throughput Screening Assessment of Reactive Oxygen Species (ROS) Generation using Dihydroethidium (DHE) Fluorescence Dye05:16

High Throughput Screening Assessment of Reactive Oxygen Species (ROS) Generation using Dihydroethidium (DHE) Fluorescence Dye

Published on: January 19, 2024

Related Concept Videos

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...
Bioactivation and Tissue Toxicity01:25

Bioactivation and Tissue Toxicity

Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
Cellular Injury I: Introduction01:00

Cellular Injury I: Introduction

Cellular injury occurs when a cell cannot maintain homeostasis or adapt to stressors such as hypoxia, toxins, or trauma. Depending on severity and duration, injury may be reversible, allowing recovery, or irreversible, leading to cell death.General Mechanisms of Cell InjuryAlthough causes vary, most cellular injuries arise from a few key mechanisms that disrupt essential functions and often amplify one another. Cell survival depends on the extent and balance of these disturbances.ATP depletion...
Electron Transport Chain: Complex III and IV01:43

Electron Transport Chain: Complex III and IV

During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
Cellular Injury IV: Necrosis01:16

Cellular Injury IV: Necrosis

Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...