Evidence map›Paper›PMID 18032586›Full record

ArticleMolecular biology of the cell2008

Anomalous surface distribution of glycosyl phosphatidyl inositol-anchored proteins in neurons lacking acid sphingomyelinase.

Cristian Galvan, Paola G Camoletto, Flavio Cristofani, Paul P Van Veldhoven, Maria Dolores Ledesma

Abstract read
In one paragraph

Article in Molecular biology of the cell, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Emerging links between pediatric lysosomal storage diseases and adult parkinsonism.Movement disorders : official journal of the Movement Disorder Society · 2019
    Pooled it
  2. Article
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  4. Article
  5. A kaleidoscopic view of extracellular vesicles in lysosomal storage disorders.Extracellular vesicles and circulating nucleic acids · 2022
    Review
  6. Review
  7. Review
  8. Article
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  14. Article
  15. Article
  16. Article
  17. Measuring brain lipids.Biochimica et biophysica acta · 2015
    Review
  18. Article
  19. Article
  20. Article
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

5 authors at 3 institutions in 2 countries.

Cristian GalvanCavalieri Ottolenghi Scientific Institute, Universita degli Studi di Torino, A.O. San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano (Torino), Italy.
Paola G Camoletto
Flavio Cristofani
Paul P Van Veldhoven
Maria Dolores Ledesma
University of Turin · ITVlaams Instituut voor Biotechnologie · BEKU Leuven · BE

Funding

Telethon GGP02245
6 · The paper itself

Abstract

Acid sphingomyelinase (ASM) converts sphingomyelin (SM) into ceramide. Mutations in the ASM gene cause the mental retardation syndrome Niemann Pick type A (NPA), characterized as a lysosomal disorder because of the SM accumulation in these organelles. We here report that neurons from mice lacking ASM (ASMKO) present increased plasma membrane SM levels evident in detergent-resistant membranes. Paralleling this lipidic alteration, GPI-anchored proteins show an aberrant distribution in both axons and dendrites instead of the axonal enrichment observed in neurons from wild-type mice. Trafficking analysis suggests that this is due to defective internalization from dendrites. Increasing the SM content in wild-type neurons mimics these defects, whereas SM reduction in ASMKO neurons prevents their occurrence. Moreover, expression of active RhoA, which membrane attachment is affected by SM accumulation, rescues internalization rates in ASMKO neurons. These data unveil an unexpected role for ASM in neuronal plasma membrane organization and trafficking providing insight on the molecular mechanisms involved. They also suggest that deficiencies in such processes could be key pathological events in NPA disease.

Indexed as

AnimalsCell MembraneCell PolarityDetergentsEndocytosisEnzyme ActivationExocytosisGlycosylphosphatidylinositolsG(M1) GangliosideGolgi ApparatusMiceMice, Inbred C57BLMice, KnockoutNeuronsPrionsrhoA GTP-Binding Proteinacid sphingomyelinase-1DetergentsGlycosylphosphatidylinositolsG(M1) GangliosidePrionsrhoA GTP-Binding ProteinSphingomyelin PhosphodiesteraseSphingomyelins

Identifiers

PMID18032586
PMCPMC2230584
OpenAlexW2157617625

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.