Evidence map›Paper›PMID 22883210›Full record

ArticleBiological psychiatry2013

Selective loss of noradrenaline exacerbates early cognitive dysfunction and synaptic deficits in APP/PS1 mice.

Thea Hammerschmidt, Markus P Kummer, Dick Terwel, Ana Martinez, Ali Gorji, Hans-Christian Pape, Karen S Rommelfanger, Jason P Schroeder, Monika Stoll, Joachim Schultze and 2 more

Open access · greenAbstract read
In one paragraph

Article in Biological psychiatry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 116 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Stress, stress systems, and Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  5. Sex differences in neuromodulatory subcortical systems and their implications for Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  6. Article
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  8. Article
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  11. αPharmaceuticals (Basel, Switzerland) · 2025
    Review
  12. Article
  13. Article
  14. Article
  15. Light-exercise-induced dopaminergic and noradrenergic stimulation in the dorsal hippocampus: Using a rat physiological exercise model.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024
    Article
  16. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 5 institutions in 2 countries.

Thea HammerschmidtDepartment of Neurology, Clinical Neurosciences, University of Bonn, Bonn, Germany.
Markus P Kummer
Dick Terwel
Ana Martinez
Ali Gorji
Hans-Christian Pape
Karen S Rommelfanger
Jason P Schroeder
Monika Stoll
Joachim Schultze
David Weinshenker
Michael T Heneka
Emory University · USGerman Center for Neurodegenerative Diseases · DEUniversity of Münster · DEMax Planck Institute for Biophysical Chemistry · DEUniversity of Bonn · DE

Funding

The Emory Alzheimer's Disease CenterP50AG025688 · NIA · EMORY UNIVERSITY · PI LEVEY, ALLAN I · 2005 to 2019
$25.7M
NIA NIH HHS P50 AG025688
6 · The paper itself

Abstract

backgroundDegeneration of the locus coeruleus (LC), the major noradrenergic nucleus in the brain, occurs early and is ubiquitous in Alzheimer's disease (AD). Experimental lesions to the LC exacerbate AD-like neuropathology and cognitive deficits in several transgenic mouse models of AD. Because the LC contains multiple neuromodulators known to affect amyloid β toxicity and cognitive function, the specific role of noradrenaline (NA) in AD is not well understood.

methodsTo determine the consequences of selective NA deficiency in an AD mouse model, we crossed dopamine β-hydroxylase (DBH) knockout mice with amyloid precursor protein (APP)/presenilin-1 (PS1) mice overexpressing mutant APP and PS1. Dopamine β-hydroxylase (-/-) mice are unable to synthesize NA but otherwise have normal LC neurons and co-transmitters. Spatial memory, hippocampal long-term potentiation, and synaptic protein levels were assessed.

resultsThe modest impairments in spatial memory and hippocampal long-term potentiation displayed by young APP/PS1 or DBH (-/-) single mutant mice were augmented in DBH (-/-)/APP/PS1 double mutant mice. Deficits were associated with reduced levels of total calcium/calmodulin-dependent protein kinase II and N-methyl-D-aspartate receptor 2A and increased N-methyl-D-aspartate receptor 2B levels and were independent of amyloid β accumulation. Spatial memory performance was partly improved by treatment with the NA precursor drug L-threo-dihydroxyphenylserine.

conclusionsThese results indicate that early LC degeneration and subsequent NA deficiency in AD may contribute to cognitive deficits via altered levels of calcium/calmodulin-dependent protein kinase II and N-methyl-D-aspartate receptors and suggest that NA supplementation could be beneficial in early AD.

Indexed as

Amyloid beta-Protein PrecursorAnimalsCalcium-Calmodulin-Dependent Protein Kinase Type 2CognitionDopamine beta-HydroxylaseExploratory BehaviorLong-Term PotentiationMaze LearningMiceMice, KnockoutNeuronsNorepinephrinePresenilin-1SynapsesTyrosine 3-MonooxygenaseAmyloid beta-Protein PrecursorCalcium-Calmodulin-Dependent Protein Kinase Type 2Dopamine beta-HydroxylaseNorepinephrinePresenilin-1Tyrosine 3-Monooxygenase

Identifiers

PMID22883210
PMCPMC4712953
OpenAlexW2084891548

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.