Damage to oligodendrocytes in the striatum after MPTP neurotoxicity in mice.
We investigated the alteration of oligodendrocytes in comparison with that of astrocytes and microglia in the mouse striatum after MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropridine) treatment under the same conditions using Western blot analysis and Immunohistochemistry. In our Western blot analysis, four administrations of MPTP at 2-h intervals to mice produced the remarkable loss of TH (tyrosine hydroxylase) protein levels in the striatum after 3 and 7 days. In contrast, GFAP (glial fibrillary acidic protein) and Iba-1 protein in the striatum showed a significant increase of GFAP and Iba-1 protein levels 3 and 7 days after MPTP treatment. On the other hand, the levels of CNPase (2', 3'-cyclic nucleotide 3'-phosphodiesterase) protein were decreased significantly in the striatum 3 and 7 days after MPTP treatment. In our immunohistochemical study, a significant decrease in the area of expression of CNPase-positive profiles was observed in the striatum 3 and 7 days after MPTP treatment. These results demonstrate that oligodendrocytes in the striatum are damaged after MPTP treatment. Thus our present findings provide valuable information for the pathogenesis of Parkinson's disease.
Department of Neurobiology and Therapeutics, Graduate School and Faculty of Pharmaceutical Sciences, The University of Tokushima, Tokushima, Japan.
S
S
Takagi
N
N
Hayakawa
H
H
Kimoto
H
H
Kato
T
T
Araki
D015087:2',3'-Cyclic-Nucleotide Phosphodiesterases / Q000187:drug effects / Q000378:metabolism; D000818:Animals; D001253:Astrocytes / Q000187:drug effects / Q000473:pathology; D015153:Blotting, Western; D002135:Calcium-Binding Proteins / Q000187:drug effects / Q000378:metabolism; D003342:Corpus Striatum / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology*; D005904:Glial Fibrillary Acidic Protein / Q000187:drug effects / Q000378:metabolism; D007150:Immunohistochemistry; D020267:MPTP Poisoning / Q000378:metabolism / Q000473:pathology*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008840:Microfilament Proteins; D017628:Microglia / Q000187:drug effects / Q000473:pathology; D009836:Oligodendroglia / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology*; D014446:Tyrosine 3-Monooxygenase / Q000187:drug effects / Q000378:metabolism
C491049:Aif1 protein, mouse; D002135:Calcium-Binding Proteins; D005904:Glial Fibrillary Acidic Protein; D008840:Microfilament Proteins; D014446:Tyrosine 3-Monooxygenase; D015087:2',3'-Cyclic-Nucleotide Phosphodiesterases