Related Experiment Video

Updated: Jan 20, 2026

Behavioral Assessments of Spontaneous Locomotion in a Murine MPTP-induced Parkinson's Disease Model
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Behavioral Assessments of Spontaneous Locomotion in a Murine MPTP-induced Parkinson's Disease Model

Published on: January 7, 2019

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Antibiotic-induced microbiome depletion protects against MPTP-induced dopaminergic neurotoxicity in the brain

Yaoyu Pu1, Lijia Chang1, Youge Qu1

  • 1Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba 260-8670, Japan.

Aging
|September 4, 2019
PubMed

Insights

Antibiotic treatment protected mice from Parkinson's-like brain damage by altering gut microbes. This suggests the brain-gut axis plays a key role in neuroprotection against dopaminergic neurotoxicity.

Area of Science:

  • Neuroscience
  • Microbiology
  • Gastroenterology

Background:

  • The brain-gut axis is implicated in Parkinson's disease pathogenesis.
  • The specific role of gut microbiota in Parkinson's disease remains unclear.

Purpose of the Study:

  • To investigate if antibiotic-induced microbiome depletion impacts dopaminergic neurotoxicity in a mouse model of Parkinson's disease.
  • To explore the influence of the gut microbiome on neuroprotection.

Main Methods:

  • Mice were treated with an antibiotic cocktail or water, followed by administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP).
  • Dopamine transporter (DAT) and tyrosine hydroxylase (TH) immunoreactivity were assessed in mouse brains.
  • Gut microbiota composition and diversity were analyzed using 16S rRNA sequencing.

Main Results:

  • MPTP significantly reduced DAT and TH immunoreactivity in water-treated mice, indicating dopaminergic neurotoxicity.
  • Antibiotic treatment prevented MPTP-induced reductions in DAT and TH.
  • Antibiotic treatment altered gut microbiota diversity and composition, and MPTP further modified the microbiome in antibiotic-treated mice.

Conclusions:

  • Antibiotic-induced microbiome depletion may offer protection against MPTP-induced dopaminergic neurotoxicity.
  • These findings highlight the potential role of the brain-gut axis in modulating neurodegenerative processes in Parkinson's disease.
Keywords:
MPTPantibioticdopaminegut microbiotaneurotoxicity

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