Journal ArticleDOI
Resting Microglial Cells Are Highly Dynamic Surveillants of Brain Parenchyma in Vivo
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TLDR
Using in vivo two-photon imaging in neocortex, it is found that microglial cells are highly active in their presumed resting state, continually surveying their microenvironment with extremely motile processes and protrusions.Abstract:
Microglial cells represent the immune system of the mammalian brain and therefore are critically involved in various injuries and diseases. Little is known about their role in the healthy brain and their immediate reaction to brain damage. By using in vivo two-photon imaging in neocortex, we found that microglial cells are highly active in their presumed resting state, continually surveying their microenvironment with extremely motile processes and protrusions. Furthermore, blood-brain barrier disruption provoked immediate and focal activation of microglia, switching their behavior from patroling to shielding of the injured site. Microglia thus are busy and vigilant housekeepers in the adult brain.read more
Citations
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疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
TL;DR: PfPMP1）与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作�ly.
Journal ArticleDOI
Deep tissue two-photon microscopy
Fritjof Helmchen,Winfried Denk +1 more
TL;DR: Fundamental concepts of nonlinear microscopy are reviewed and conditions relevant for achieving large imaging depths in intact tissue are discussed.
Journal ArticleDOI
Microglia-mediated neurotoxicity: uncovering the molecular mechanisms
TL;DR: Overactivated microglia can be detected using imaging techniques and therefore this knowledge offers an opportunity not only for early diagnosis but, importantly, for the development of targeted anti-inflammatory therapies that might slow or halt the progression of neurodegenerative disease.
Journal ArticleDOI
Microglia: active sensor and versatile effector cells in the normal and pathologic brain
TL;DR: This review focuses on several key observations that illustrate the multi-faceted activities of microglia in the normal and pathologic brain.
Journal ArticleDOI
Synaptic Pruning by Microglia Is Necessary for Normal Brain Development
Rosa C. Paolicelli,Giulia Bolasco,Francesca Pagani,Laura Maggi,Maria Scianni,Patrizia Panzanelli,Maurizio Giustetto,Tiago Ferreira,Eva Guiducci,Laura Dumas,Davide Ragozzino,Cornelius Gross +11 more
TL;DR: It is shown that microglia actively engulf synaptic material and play a major role in synaptic pruning during postnatal development in mice and this work suggests that deficits in microglian function may contribute to synaptic abnormalities seen in some neurodevelopmental disorders.
References
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疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
TL;DR: PfPMP1）与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作�ly.
Journal ArticleDOI
Microglia: a sensor for pathological events in the CNS
TL;DR: An understanding of intercellular signalling pathways for microglia proliferation and activation could form a rational basis for targeted intervention on glial reactions to injuries in the CNS.
Journal ArticleDOI
Analysis of fractalkine receptor CX(3)CR1 function by targeted deletion and green fluorescent protein reporter gene insertion.
Steffen Jung,Julio Aliberti,Petra Graemmel,Mary Jean Sunshine,Georg W. Kreutzberg,Alan Sher,Dan R. Littman +6 more
TL;DR: Defying anticipated FKN functions, absence of CX3CR1 interferes neither with monocyte extravasation in a peritonitis model nor with DC migration and differentiation in response to microbial antigens or contact sensitizers.
Journal ArticleDOI
Long-term in vivo imaging of experience-dependent synaptic plasticity in adult cortex
Joshua T. Trachtenberg,Brian E. Chen,Graham Knott,Guoping Feng,Joshua R. Sanes,Egbert Welker,Karel Svoboda +6 more
TL;DR: The measurements suggest that sensory experience drives the formation and elimination of synapses and that these changes might underlie adaptive remodelling of neural circuits.
Journal ArticleDOI
Long-term dendritic spine stability in the adult cortex
TL;DR: It is shown that filopodia-like dendritic protrusions, extending and retracting over hours, are abundant in young animals but virtually absent from the adult, providing a potential structural basis for long-term information storage.