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@ARTICLE{Schott:155635,
author = {Schott, Björn and Kronenberg, Golo and Schmidt, Ulrike and
Düsedau, Henning P and Ehrentraut, Stefanie and Geisel,
Olga and von Bohlen Und Halbach, Oliver and Gass, Peter and
Dunay, Ildiko Rita and Hellweg, Rainer},
title = {{R}obustly {H}igh {H}ippocampal {BDNF} levels under {A}cute
{S}tress in {M}ice {L}acking the {F}ull-length p75
{N}eurotrophin {R}eceptor.},
journal = {Pharmacopsychiatry},
volume = {54},
number = {5},
issn = {1439-0795},
address = {Stuttgart [u.a.]},
publisher = {Thieme},
reportid = {DZNE-2021-00803},
pages = {205-213},
year = {2021},
abstract = {Brain-derived neurotrophic factor (BDNF) exerts its effects
on neural plasticity via 2 distinct receptor types, the
tyrosine kinase TrkB and the p75 neurotrophin receptor
(p75NTR). The latter can promote inflammation and cell death
while TrkB is critically involved in plasticity and memory,
particularly in the hippocampus. Acute and chronic stress
have been associated with suppression of hippocampal BDNF
expression and impaired hippocampal plasticity. We
hypothesized that p75NTR might be involved in the
hippocampal stress response, in particular in stress-induced
BDNF suppression, which might be accompanied by increased
neuroinflammation.We assessed hippocampal BDNF protein
concentrations in wild-type mice compared that in mice
lacking the long form of the p75NTR (p75NTRExIII-/-) with or
without prior exposure to a 1-hour restraint stress
challenge. Hippocampal BDNF concentrations were measured
using an optimized ELISA. Furthermore, whole-brain mRNA
expression of pro-inflammatory interleukin-6 (Il6) was
assessed with RT-PCR.Deletion of full-length p75NTR was
associated with higher hippocampal BDNF protein
concentration in the stress condition, suggesting
persistently high hippocampal BDNF levels in
p75NTR-deficient mice, even under stress. Stress elicited
increased whole-brain Il6 mRNA expression irrespective of
genotype; however, p75NTRExIII-/- mice showed elevated
baseline Il6 expression and thus a lower relative
increase.Our results provide evidence for a role of p75NTR
signaling in the regulation of hippocampal BDNF levels,
particularly under stress. Furthermore, p75NTR signaling
modulates baseline but not stress-related Il6 gene
expression in mice. Our findings implicate p75NTR signaling
as a potential pathomechanism in BDNF-dependent modulation
of risk for neuropsychiatric disorders.},
keywords = {Animals / Brain-Derived Neurotrophic Factor: genetics /
Brain-Derived Neurotrophic Factor: metabolism / Hippocampus:
metabolism / Mice / Receptor, Nerve Growth Factor:
metabolism / Receptors, Nerve Growth Factor: genetics /
Receptors, Nerve Growth Factor: metabolism / Signal
Transduction},
cin = {AG Fischer 1},
ddc = {610},
cid = {I:(DE-2719)1410002},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33592642},
doi = {10.1055/a-1363-1680},
url = {https://pub.dzne.de/record/155635},
}