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@ARTICLE{Lothmann:888139,
author = {Lothmann, Kimberley and Deitersen, Jana and Zilles, Karl
and Amunts, Katrin and Herold, Christina},
title = {{N}ew boundaries and dissociation of the mouse hippocampus
along the dorsal‐ventral axis based on glutamatergic,
{GABA}ergic and catecholaminergic receptor densities},
journal = {Hippocampus},
volume = {31},
number = {1},
issn = {1098-1063},
address = {New York, NY [u.a.]},
publisher = {Wiley},
reportid = {FZJ-2020-04713},
pages = {56-78},
year = {2021},
abstract = {In rodents, gene‐expression, neuronal tuning,
connectivity and neurogenesis studies have postulated that
the dorsal, the intermediate and the ventral hippocampal
formation (HF) are distinct entities. These findings are
underpinned by behavioral studies showing a dissociable role
of dorsal and ventral HF in learning, memory, stress and
emotional processing. However, up to now, the molecular
basis of such differences in relation to discrete boundaries
is largely unknown. Therefore, we analyzed binding site
densities for glutamatergic AMPA, NMDA, kainate and
mGluR2/3, GABAergic GABAA (including benzodiazepine binding
sites), GABAB, dopaminergic D1/5 and noradrenergic α1 and
α2 receptors as key modulators for signal transmission in
hippocampal functions, using quantitative in vitro receptor
autoradiography along the dorsal‐ventral axis of the mouse
HF. Beside general different receptor profiles of the
dentate gyrus (DG) and Cornu Ammonis fields (CA1, CA2, CA3,
CA4/hilus), we detected substantial differences between
dorsal, intermediate and ventral subdivisions and individual
layers for all investigated receptor types, except GABAB.
For example, striking higher densities of α2 receptors were
detected in the ventral DG, while the dorsal DG possesses
higher numbers of kainate, NMDA, GABAA and D1/5 receptors.
CA1 dorsal and intermediate subdivisions showed higher AMPA,
NMDA, mGluR2/3, GABAA, D1/5 receptors, while kainate
receptors are higher expressed in ventral CA1, and
noradrenergic α1 and α2 receptors in the intermediate
region of CA1. CA2 dorsal was distinguished by higher
kainate, α1 and α2 receptors in the intermediate region,
while CA3 showed a more complex dissociation. Our findings
resulted not only in a clear segmentation of the mouse
hippocampus along the dorsal‐ventral axis, but also
provides insights into the neurochemical basis and likely
associated physiological processes in hippocampal functions.
Therein, the presented data has a high impact for future
studies modeling and investigating dorsal, intermediate and
ventral hippocampal dysfunction in relation to
neurodegenerative diseases or psychiatric disorders.},
cin = {INM-1},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525) / HBP SGA2 - Human Brain Project Specific Grant
Agreement 2 (785907) / HBP SGA3 - Human Brain Project
Specific Grant Agreement 3 (945539)},
pid = {G:(DE-HGF)POF4-5251 / G:(EU-Grant)785907 /
G:(EU-Grant)945539},
typ = {PUB:(DE-HGF)16},
pubmed = {32986281},
UT = {WOS:000573167300001},
doi = {10.1002/hipo.23262},
url = {https://juser.fz-juelich.de/record/888139},
}