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@ARTICLE{Ehninger:136271,
author = {Ehninger, Dan and Wang, Li-Ping and Klempin, Friederike and
Römer, Benedikt and Kettenmann, Helmut and Kempermann,
Gerd},
title = {{E}nriched environment and physical activity reduce
microglia and influence the fate of {NG}2 cells in the
amygdala of adult mice.},
journal = {Cell $\&$ tissue research},
volume = {345},
number = {1},
issn = {0302-766X},
address = {Heidelberg},
publisher = {Springer},
reportid = {DZNE-2020-02593},
pages = {69-86},
year = {2011},
abstract = {Proliferative cells expressing proteoglycan neuron-glia 2
(NG2) are considered to represent parenchymal precursor
cells in the adult brain and are thought to differentiate
primarily into oligodendrocytes. We have studied cell
genesis in the adult amygdala and found that, up to 1 year
after the labeling of proliferating cells with
bromodeoxyuridine, most proliferating NG2 cells remain NG2
cells, and only a few slowly differentiate into mature
oligodendrocytes, as assessed by the expression of
2',3'-cyclic nucleotide 3'-phosphodiesterase. We have
detected no signs of neurogenesis but have confirmed the
expression of 'neuronal' markers such as Doublecortin in NG2
cells. Nestin-expressing NG2 cells in the amygdala show
electrophysiological properties known for oligodendrocyte
precursor cells in the corpus callosum. Application of the
glutamate agonist kainate elicits a 'complex' response
consisting of a rapid and long-lasting blockade of the
resting K(+) conductance, a transient cationic current, and
a transient increase of an outwardly directed K(+)
conductance, suggesting the responsiveness of NG2 cells to
excitation. Proliferation of NG2 cells increases in response
to behavioral stimuli of activity, voluntary wheel running,
and environmental enrichment. In addition to reducing the
number of newborn microglia, behavioral activity results in
a decrease in S100β-expressing newborn NG2 cells in the
amygdala. Because S100β expression in NG2 cells ceases with
oligodendrocyte maturation, this finding suggests that NG2
cells in the amygdala undergo activity-dependent functional
alterations, without resulting in a measurable increase in
new mature oligodendrocytes over the time period covered by
the present study. The adult amygdala thus shows signs of
mixed activity-dependent plasticity: reduced numbers of
microglia and, presumably, an altered fate of NG2 cells.},
keywords = {Aging: physiology / Amygdala: cytology / Animals /
Bromodeoxyuridine: metabolism / Cell Count / Cell Line /
Cell Lineage / Cell Proliferation / Electrophysiological
Phenomena / Environment / Mice / Microglia: cytology /
Microglia: metabolism / Motor Activity / Nerve Growth
Factors: metabolism / Neurogenesis / Neurons: cytology /
Neurons: metabolism / Oligodendroglia: cytology /
Oligodendroglia: metabolism / Phenotype / S100 Calcium
Binding Protein beta Subunit / S100 Proteins: metabolism /
Visual Cortex: cytology / Visual Cortex: metabolism / Nerve
Growth Factors (NLM Chemicals) / S100 Calcium Binding
Protein beta Subunit (NLM Chemicals) / S100 Proteins (NLM
Chemicals) / Bromodeoxyuridine (NLM Chemicals)},
cin = {AG Ehninger / AG Kempermann},
ddc = {610},
cid = {I:(DE-2719)1013005 / I:(DE-2719)1710001},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:21688212},
pmc = {pmc:PMC3132349},
doi = {10.1007/s00441-011-1200-z},
url = {https://pub.dzne.de/record/136271},
}