Evidence map›Paper›PMID 18332041›Full record

ArticleNucleic acids research2008

Elevated alpha-synuclein mRNA levels in individual UV-laser-microdissected dopaminergic substantia nigra neurons in idiopathic Parkinson's disease.

Jan Gründemann, Falk Schlaudraff, Olga Haeckel, Birgit Liss

Open access · goldAbstract readValidation Study
In one paragraph

Article in Nucleic acids research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed, 1 pooled it
7.3field-weighted citation impact, top 3% 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

99 citing papers in PubMed, 1 synthesis or guideline pooled it, 177 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Research Priorities on the Role of α-Synuclein in Parkinson's Disease Pathogenesis.Movement disorders : official journal of the Movement Disorder Society · 2024
    Review
  9. Article
  10. Review
  11. Article
  12. Neuronal-type-specific epigenome editing to decreaseMolecular therapy. Nucleic acids · 2024
    Article
  13. Article
  14. Neuronal SNCA transcription during Lewy body formation.Acta neuropathologica communications · 2023
    Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. A Mouse Model to Test Novel Therapeutics for Parkinson's Disease: an Update on the Thy1-aSyn ("line 61") Mice.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review

39 more citing papers are in PubMed but not listed here.

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

4 authors at 1 institution in 1 country.

Jan GründemannMolecular Neurobiology, Department of Physiology, Philipps-University Marburg, Deutschhausstrasse 2, 35037 Marburg, Germany.
Falk Schlaudraff
Olga Haeckel
Birgit Liss
Universität Ulm · DE

Funding

Wellcome Trust
6 · The paper itself

Abstract

The presynaptic protein alpha-synuclein is involved in several neurodegenerative diseases, including Parkinson's disease (PD). In rare familial forms of PD, causal mutations (PARK1) as well as multiplications (PARK4) of the alpha-synuclein gene have been identified. In sporadic, idiopathic PD, abnormal accumulation and deposition of alpha-synuclein might also cause degeneration of dopaminergic midbrain neurons, the clinically most relevant neuronal population in PD. Thus, cell-specific quantification of alpha-synuclein expression-levels in dopaminergic neurons from idiopathic PD patients in comparison to controls would provide essential information about contributions of alpha-synuclein to the etiology of PD. However, a number of previous studies addressing this question at the tissue-level yielded varying results regarding alpha-synuclein expression. To increase specificity, we developed a cell-specific approach for mRNA quantification that also took into account the important issue of variable RNA integrities of the individual human postmortem brain samples. We demonstrate that PCR -amplicon size can confound quantitative gene-expression analysis, in particular of partly degraded RNA. By combining optimized UV-laser microdissection- and quantitative RT-PCR-techniques with suitable PCR assays, we detected significantly elevated alpha-synuclein mRNA levels in individual, surviving neuromelanin- and tyrosine hydroxylase-positive substantia nigra dopaminergic neurons from idiopathic PD brains compared to controls. These results strengthen the pathophysiologic role of transcriptional dysregulation of the alpha-synuclein gene in sporadic PD.

Indexed as

Reverse Transcriptase Polymerase Chain ReactionAgedalpha-SynucleinAnimalsDopamineHumansLasersMaleMiceMice, Inbred C57BLMicrodissectionNeuronsParkinson DiseaseRNA, MessengerSubstantia NigraTranscription, Geneticalpha-SynucleinDopamineRNA, MessengerTyrosine 3-Monooxygenase

Identifiers

PMID18332041
PMCPMC2367701
OpenAlexW2041078258

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.