Persistent phagocytic characteristics of microglia in the substantia nigra of long-term Parkinsonian macaques

被引:39
作者
Barcia, Carlos [1 ]
Maria Ros, Carmen [1 ]
Ros-Bernal, Francisco [1 ]
Gomez, Aurora [1 ]
Annese, Valentina [1 ]
Angeles Carrillo-de Sauvage, Maria [1 ]
Enrique Yuste, Jose [1 ]
Maria Campuzano, Carmen
de Pablos, Vicente [1 ]
Fernandez-Villalba, Emiliano [1 ]
Trinidad Herrero, Maria [1 ]
机构
[1] Univ Murcia, Sch Med, Ctr Invest Biomed Red Enfermedades Neurodegenerat, E-30071 Murcia, Spain
关键词
Parkinson's disease; MPTP; Dopaminergic degeneration; Cell polarity; Inflammation; Microglial motility; REACTIVE MICROGLIA; IN-VIVO; DISEASE; NEURONS; MONKEYS; MPTP; ACTIVATION; BRAIN; EXPOSURE; CELLS;
D O I
10.1016/j.jneuroim.2013.05.001
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
071005 [微生物学]; 100108 [医学免疫学];
摘要
Patients with Parkinson's disease show persistent microglial activation in the areas of the brain where the degeneration of dopaminergic neurons takes place. The reason for maintaining this activated state is still unknown, but it is thought that this persistent microglial activation may contribute to the degeneration of dopaminergic neurons. In this study, we report the microanatomical details of microglia and the relationship between microglia and neurons in the substantia nigra pars compacta of Parkinsonian monkeys years after insult with MPTP. We observed that microglial cells appear polarized toward dopaminergic neurons in MPTP-treated macaques compared to untreated animals and present clear phagocytic characteristics, such as engulfing gliaptic contacts, an increase in Golgi apparatus protein machinery and ball-and-chain phagocytic buds. These results demonstrate that activated microglia maintain phagocytic characteristics years after neurotoxin insult, and phagocytosis may be a key contributor to the neurodegenerative process. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:60 / 66
页数:7
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