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@ARTICLE{Rollenhagen:878138,
author = {Rollenhagen, Astrid and Walkenfort, Bernd and Yakoubi,
Rachida and Klauke, Sarah A. and Schmuhl-Giesen, Sandra F.
and Heinen-Weiler, Jacqueline and Voortmann, Sylvia and
Marshallsay, Brigitte and Palaz, Tayfun and Holz, Ulrike and
Hasenberg, Mike and Lübke, Joachim H. R.},
title = {{S}ynaptic {O}rganization of the {H}uman {T}emporal {L}obe
{N}eocortex as {R}evealed by {H}igh-{R}esolution
{T}ransmission, {F}ocused {I}on {B}eam {S}canning, and
{E}lectron {M}icroscopic {T}omography},
journal = {International journal of molecular sciences},
volume = {21},
number = {15},
issn = {1422-0067},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2020-02655},
pages = {5558 -},
year = {2020},
abstract = {Modern electron microscopy (EM) such as fine-scale
transmission EM, focused ion beam scanning EM, and EM
tomography have enormously improved our knowledge about the
synaptic organization of the normal, developmental, and
pathologically altered brain. In contrast to various animal
species, comparably little is known about these structures
in the human brain. Non-epileptic neocortical access tissue
from epilepsy surgery was used to generate quantitative 3D
models of synapses. Beside the overall geometry, the number,
size, and shape of active zones and of the three
functionally defined pools of synaptic vesicles representing
morphological correlates for synaptic transmission and
plasticity were quantified. EM tomography further allowed
new insights in the morphological organization and size of
the functionally defined readily releasable pool. Beside
similarities, human synaptic boutons, although comparably
small (approximately 5 µm), differed substantially in
several structural parameters, such as the shape and size of
active zones, which were on average 2 to 3-fold larger than
in experimental animals. The total pool of synaptic vesicles
exceeded that in experimental animals by approximately 2 to
3-fold, in particular the readily releasable and recycling
pool by approximately 2 to 5-fold, although these pools
seemed to be layer-specifically organized. Taken together,
synaptic boutons in the human temporal lobe neocortex
represent unique entities perfectly adapted to the “job”
they have to fulfill in the circuitry in which they are
embedded. Furthermore, the quantitative 3D models of
synaptic boutons are useful to explain and even predict the
functional properties of synaptic connections in the human
neocortex.},
cin = {INM-10},
ddc = {540},
cid = {I:(DE-Juel1)INM-10-20170113},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
pubmed = {32756507},
UT = {WOS:000559578200001},
doi = {10.3390/ijms21155558},
url = {https://juser.fz-juelich.de/record/878138},
}