FIGURE 9.
Effect of LPS and MPTP on the dopaminergic neurons. (A) Coronal section showing TH immunoreactivity in a control animal. (B) TH immunoreactivity 2 weeks after the injection of LPS. No significant changes are observed. (C) TH immunoreactivity 2 weeks after the injection of MPTP. There is a clear loss of dopaminergic neurons in the SN. (D) TH immunoreactivity 2 weeks after the injection of both LPS and MPTP. The loss of neurons is higher. Scale bar: 500 μm. (E) Quantification of the number of TH-positive cells. Results are mean ± SD of three independent experiments, and are expressed as TH-positive cells within the bounded area of the SN. Statistical signification (ANOVA followed by the LSD post hoc test for multiple comparisons): a, compared with control; b, compared with MPTP; p < 0.001.