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@ARTICLE{Yakoubi:850770,
author = {Yakoubi, Rachida and Rollenhagen, Astrid and von Lehe,
Marec and Shao, Yachao and Sätzler, Kurt and Lübke,
Joachim},
title = {{Q}uantitative {T}hree-{D}imensional {R}econstructions of
{E}xcitatory {S}ynaptic {B}outons in {L}ayer 5 of the
{A}dult {H}uman {T}emporal {L}obe {N}eocortex: {A}
{F}ine-{S}cale {E}lectron {M}icroscopic {A}nalysis},
journal = {Cerebral cortex},
volume = {29},
number = {7},
issn = {1460-2199},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {FZJ-2018-04544},
pages = {2797–2814},
year = {2019},
abstract = {Studies of synapses are available for different brain
regions of several animal species including non-human
primates, but comparatively little is known about their
quantitative morphology in humans. Here, synaptic boutons in
Layer 5 (L5) of the human temporal lobe (TL) neocortex were
investigated in biopsy tissue, using fine-scale electron
microscopy, and quantitative three-dimensional
reconstructions. The size and organization of the
presynaptic active zones (PreAZs), postsynaptic densities
(PSDs), and that of the 3 distinct pools of synaptic
vesicles (SVs) were particularly analyzed. L5 synaptic
boutons were medium-sized (~6 μm2) with a single but
relatively large PreAZ (~0.3 μm2). They contained a total
of ~1500 SVs/bouton, ~20 constituting the putative readily
releasable pool (RRP), ~180 the recycling pool (RP), and the
remainder, the resting pool. The PreAZs, PSDs, and vesicle
pools are ~3-fold larger than those of CNS synapses in other
species. Astrocytic processes reached the synaptic cleft and
may regulate the glutamate concentration. Profound
differences exist between synapses in human TL neocortex and
those described in various species, particularly in the size
and geometry of PreAZs and PSDs, the large RRP/RP, and the
astrocytic ensheathment suggesting high synaptic efficacy,
strength, and modulation of synaptic transmission at human
synapses.},
cin = {INM-10 / JSC / JARA-HPC},
ddc = {610},
cid = {I:(DE-Juel1)INM-10-20170113 / I:(DE-Juel1)JSC-20090406 /
$I:(DE-82)080012_20140620$},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511) / 571 - Connectivity and Activity (POF3-571) /
SMHB - Supercomputing and Modelling for the Human Brain
(HGF-SMHB-2013-2017) / SLNS - SimLab Neuroscience
(Helmholtz-SLNS)},
pid = {G:(DE-HGF)POF3-511 / G:(DE-HGF)POF3-571 /
G:(DE-Juel1)HGF-SMHB-2013-2017 / G:(DE-Juel1)Helmholtz-SLNS},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29931200},
UT = {WOS:000477708300003},
doi = {10.1093/cercor/bhy146},
url = {https://juser.fz-juelich.de/record/850770},
}