Oxidative stress is not involved in motion sickness in mice

Zhi-Bin Wang1, Ping Han, Ye Tu

  • 1Department of Pharmacology, Second Military Medical University, Shanghai, China.

Abstract

Insights

This study investigated oxidative stress in motion sickness. Results show that while oxidative stress markers increase in the brainstem after rotation, antioxidants do not affect motion sickness in mice, indicating no causal link.

Area of Science:

  • Neuroscience
  • Biochemistry

Background:

  • Indirect evidence suggests a link between oxidative stress and motion sickness.
  • Understanding this relationship is crucial for developing effective treatments.

Purpose of the Study:

  • To determine if oxidative stress contributes to the development of motion sickness in a mouse model.
  • To investigate the role of specific oxidative stress markers in brain regions affected by motion sickness.

Main Methods:

  • Assessed mRNA levels of antioxidant enzymes (PRDX6, catalase, SOD1) and measured reactive oxygen species (ROS) and antioxidant capacity in mouse brain regions post-rotation.
  • Recorded motion sickness index in mice pretreated with paraquat (oxidant), vitamin C, or vitamin E (antioxidants).

Main Results:

  • Rotation increased ROS levels and antioxidant capacity in the cerebellum and brainstem (CB), a key area for motion sickness.
  • Pharmacological manipulation of oxidants and antioxidants did not alter the motion sickness index in mice.

Conclusions:

  • Oxidative stress is not a contributing factor in the development of motion sickness in mice.
  • The observed changes in oxidative stress markers in the CB region are likely a response rather than a cause of motion sickness.