Evidence map›Paper›PMID 16061563›Full record

ArticleJournal of medical genetics2005

In vivo and in vitro examination of the functional significances of novel lamin gene mutations in heart failure patients.

N Sylvius, Z T Bilinska, J P Veinot, A Fidzianska, P M Bolongo, S Poon, P McKeown, R A Davies, K-L Chan, A S L Tang and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of medical genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

47 citing papers in PubMed, 100 citations in OpenAlex.

  1. Review
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  8. SUMOylation targeting mitophagy in cardiovascular diseases.Journal of molecular medicine (Berlin, Germany) · 2022
    Review
  9. Article
  10. Effects of mutant lamins on nucleo-cytoskeletal coupling inFrontiers in cell and developmental biology · 2022
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
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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

15 authors at 7 institutions in 3 countries.

N SylviusLaboratory of Genetics of Cardiac Diseases, University of Ottawa Heart Institute, Ottawa, ON, Canada.
Z T Bilinska
J P Veinot
A Fidzianska
P M Bolongo
S Poon
P McKeown
R A Davies
K-L Chan
A S L Tang
S Dyack
J Grzybowski
W Ruzyllo
H McBride
F Tesson
University of Ottawa · CAInstitute of Cardiology · PLDalhousie University · CAPolish Academy of Sciences · PLQueen's University Belfast · GBRuskin College · GBThrombosis and Atherosclerosis Research Institute · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextLamin A/C (LMNA) gene variations have been reported in more than one third of genotyped families with dilated cardiomyopathy (DCM). However, the relationship between LMNA mutation and the development of DCM is poorly understood. METHODS AND

resultsWe found that end stage DCM patients carrying LMNA mutations displayed either dramatic ultrastructural changes of the cardiomyocyte nucleus (D192G) or nonspecific changes (R541S). Overexpression of the D192G lamin C dramatically increased the size of intranuclear speckles and reduced their number. This phenotype was only partially reversed by coexpression of the D192G and wild type lamin C. Moreover, the D192G mutation precludes insertion of lamin C into the nuclear envelope when co-transfected with the D192G lamin A. By contrast, the R541S phenotype was entirely reversed by coexpression of the R541S and wild type lamin C. As lamin speckle size is known to be correlated with regulation of transcription, we assessed the SUMO1 distribution pattern in the presence of mutated lamin C and showed that D192G lamin C expression totally disrupts the SUMO1 pattern.

conclusionOur in vivo and in vitro results question the relationship of causality between LMNA mutations and the development of heart failure in some DCM patients and therefore, the reliability of genetic counselling. However, LMNA mutations producing speckles result not only in nuclear envelope structural damage, but may also lead to the dysregulation of cellular functions controlled by sumoylation, such as transcription, chromosome organisation, and nuclear trafficking.

Indexed as

MutationAnimalsCardiomyopathy, DilatedChlorocebus aethiopsCOS CellsFemaleGene Expression RegulationGenetic Predisposition to DiseaseHumansLamin Type AMaleMyocardiumMyocytes, CardiacPedigreePhenotypeSmall Ubiquitin-Related Modifier ProteinsLamin Type ALMNA protein, humanSmall Ubiquitin-Related Modifier ProteinsSUMO-1 ProteinSUMO1 protein, human

Identifiers

PMID16061563
PMCPMC1736117
OpenAlexW2146592524

What OpenQuestion holds

Textmetadata
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.