Related Experiment Video
Updated: Jun 24, 2026
Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
Published on: January 7, 2014
Strain-specific sensitivity to MPTP of C57BL/6 and BALB/c mice is age dependent
Nikolay M Filipov1, Allison B Norwood, Shannon C Sistrunk
1Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi, USA. filipov@uga.edu
Abstract:
Administration of MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) to adult (2-month to 4-month-old) male C57BL/6 mice (MPTP-sensitive) is a valuable Parkinson's disease model. At comparable age, other strains, such as BALB/c, are minimally affected by MPTP (MPTP-resistant). However, the maintenance of resistance to MPTP throughout aging in MPTP-resistant strains has not been studied. Here, we show that, as previously reported, 1-month and 18-month-old C57BL/6 mice are least and most sensitive to MPTP, respectively. MPTP, as expected, did not affect the younger (1-month and 3-month-old) BALB/c mice, but it markedly decreased striatal dopamine in the older (10-month and 18-month-old) BALB/c mice. These data suggest that the sensitivity to MPTP is age dependent and that mice from an MPTP-resistant strain lose their resistance as they age.
Insights
Aging significantly increases susceptibility to MPTP neurotoxicity in mice. Previously resistant strains, like BALB/c, lose their MPTP resistance with age, impacting Parkinson's disease modeling.
Area of Science:
- Neuroscience
- Toxicology
- Aging Research
Background:
- The MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) mouse model is crucial for Parkinson's disease research.
- C57BL/6 mice are MPTP-sensitive, while BALB/c mice are generally MPTP-resistant.
- The impact of aging on MPTP resistance in normally resistant mouse strains remains understudied.
Purpose of the Study:
- To investigate the age-dependent changes in MPTP sensitivity in BALB/c mice.
- To determine if MPTP resistance is maintained throughout aging in BALB/c mice.
Main Methods:
- Administration of MPTP to young (1-3 month old) and aged (10-18 month old) BALB/c mice.
- Assessment of striatal dopamine levels as a measure of MPTP neurotoxicity.
- Comparison with age-matched C57BL/6 mice, known to be MPTP-sensitive.
Main Results:
- Young BALB/c mice showed minimal effects from MPTP, consistent with MPTP resistance.
- Aged BALB/c mice (10 and 18 months old) exhibited a marked decrease in striatal dopamine following MPTP administration.
- Sensitivity to MPTP in BALB/c mice was significantly higher in older animals compared to younger ones.
Conclusions:
- MPTP sensitivity is age-dependent in mice.
- MPTP-resistant mouse strains, such as BALB/c, can lose their resistance to MPTP neurotoxicity as they age.
- These findings have implications for the use of aged animals in Parkinson's disease modeling and suggest a need for age-specific considerations in MPTP studies.
