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@ARTICLE{PalomeroGallagher:5301,
author = {Palomero-Gallagher, N. and Bidmon, H.-J. and Cremer, M. and
Schleicher, A. and Kircheis, G. and Reifenberger, G. and
Kostopoulos, G. and Häussinger, D. and Zilles, K.},
title = {{N}eurotransmitter {R}eceptor {I}mbalances in {M}otor
{C}ortex and {B}asal {G}anglia in {H}epatic
{E}ncephalopathy},
journal = {Cellular physiology and biochemistry},
volume = {24},
issn = {1015-8987},
address = {Basel},
publisher = {Karger},
reportid = {PreJuSER-5301},
year = {2009},
note = {The authors thank S. Wilms, S. Krause and A. Borner for
excellent technical assistance. This project was supported
by the Deutsche Forschungsgemeinschaft through the
Sonderforschungsbereich 575 "Experimental Hepatology"
(project C5).},
abstract = {Hepatic encephalopathy (HE) in chronic liver disease is
characterized by neuropsychiatric and motor disturbances and
associated with a net increase of inhibitory
neurotransmission. Though many studies, mostly carried out
in animal models, have linked dysfunctions of single
neurotransmitter systems with the pathogenesis of HE,
reports concerning neurotransmitter receptor alterations are
controversial. Little is known about the situation in
humans. We carried out a multireceptor assessment of
HE-associated changes in neurotransmitter receptor densities
and affinities in human post-mortem brain samples.
Dissociation constants and densities of different binding
sites for glutamate, GABA, acetylcholine, norepinephrine,
serotonin, dopamine and adenosine were determined by in
vitro binding assays and quantitative receptor
autoradiography in the motor cortex and putamen of HE and
control brains. HE cases do not build a homogeneous group,
but differ concerning direction and intensity of binding
site density divergences from control values. The
acetylcholine M2 binding site dissociation constant was
significantly higher in HE brains. Nicotinic acetylcholine
and adenosine type 1 and 2A densities were significantly
down-regulated in the putamen of HE brains. Our data suggest
that neurotransmitter alterations are probably not the
primary key factor responsible for the neuropsychiatric and
motor disturbances associated with HE.},
keywords = {Acetylcholine: metabolism / Adenosine: metabolism / Adult /
Aged / Autoradiography / Basal Ganglia: physiopathology /
Binding Sites / Case-Control Studies / Dopamine: metabolism
/ Fatal Outcome / Female / Glutamic Acid: metabolism /
Hepatic Encephalopathy: physiopathology / Humans / Liver
Cirrhosis: metabolism / Liver Cirrhosis, Alcoholic:
metabolism / Male / Middle Aged / Motor Cortex: metabolism /
Motor Cortex: physiopathology / Norepinephrine: metabolism /
Protein Binding / Receptors, Neurotransmitter: metabolism /
Serotonin: metabolism / gamma-Aminobutyric Acid: metabolism
/ Receptors, Neurotransmitter (NLM Chemicals) / Serotonin
(NLM Chemicals) / Norepinephrine (NLM Chemicals) /
Acetylcholine (NLM Chemicals) / gamma-Aminobutyric Acid (NLM
Chemicals) / Glutamic Acid (NLM Chemicals) / Adenosine (NLM
Chemicals) / J (WoSType)},
cin = {INM-2 / JARA-BRAIN},
ddc = {540},
cid = {I:(DE-Juel1)INM-2-20090406 / $I:(DE-82)080010_20140620$},
pnm = {Funktion und Dysfunktion des Nervensystems},
pid = {G:(DE-Juel1)FUEK409},
shelfmark = {Cell Biology / Physiology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:19710544},
UT = {WOS:000268679900018},
doi = {10.1159/000233254},
url = {https://juser.fz-juelich.de/record/5301},
}