Figure 8From: Peroxisome deficiency but not the defect in ether lipid synthesis causes activation of the innate immune system and axonal loss in the central nervous system Oxidative stress markers are only present in Purkinje cells. (A) End products of lipid peroxidation, predominantly malondialdehyde, were quantified by the TBARS assay. No differences between 9- to 12-week-old Nestin-Pex5 −/− and control littermates were observed in the corpus callosum, cerebellum or spinal cord. Values are given as means ± SEM of four independent samples of each genotype (Student’s t-test). (B-I) The markers 4-HNE (B-E) and 3-nitrotyrosine (3-NT) (F-I) were evaluated by immunohistochemistry. 4-HNE was slightly observable in Purkinje cells of two-week-old Nestin-Pex5 −/− mice (C), compared with the control littermates (B). The amount of 4-HNE present in Purkinje cells was higher at three (D) and 12 weeks (E). Low 3-NT immunoreactivity was observed at three weeks in Purkinje cells (G), but increased with age (H-I). Scale bars: B-F and G: 100 μm; G and I: 50 μm. 4-HNE, 4-hydroxynonenal; SEM, standard error of the mean; TBARS, thiobarbituric acid reactive substances.Back to article page