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Can T-cell deficiency affect spatial learning ability following toluene exposure?
Tin-Tin Win-Shwe1, Daisuke Nakajima, Hidekazu Fujimaki
1Research Center for Environmental Risk, National Institute for Environmental Studies, Tsukuba, Japan. tin.tin.win.shwe @ nies.go.jp
Neuroimmunomodulation
|November 20, 2009
Summary
T-cell deficiency may impair spatial learning in mice exposed to toluene. This study investigated T cells
Area of Science:
- Neuroscience
- Immunology
- Toxicology
Background:
- Toluene exposure is a potential neurotoxicant.
- Spatial learning is a complex cognitive function.
- The role of T cells in neurodevelopmental toxicity is not fully understood.
Purpose of the Study:
- To investigate the role of T cells in spatial learning ability following toluene exposure in mice.
Main Methods:
- Wild-type (WT) and T-cell deficient nude mice were exposed to toluene (0, 9, 90 ppm).
- Spatial learning was assessed using the Morris water maze.
- Exposure involved daily sessions for 3 days, followed by weekly sessions for 4 weeks.
Main Results:
- Toluene-exposed nude mice showed longer escape latency on days 3 and 4.
- Toluene exposure impaired memory retention in WT mice.
- No significant differences were observed in the reversal phase.
Conclusions:
- T-cell deficiency may exacerbate the negative effects of toluene on spatial learning.
- T cells play a role in the neurotoxic effects of toluene on cognitive function.
