Evidence map›Paper›PMID 21550990›Full record

ArticleJournal of lipid research2011

Altered vitamin E status in Niemann-Pick type C disease.

L Ulatowski, R Parker, C Davidson, N Yanjanin, T J Kelley, D Corey, J Atkinson, F Porter, H Arai, S U Walkley and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

18 citing papers in PubMed, 38 citations in OpenAlex.

  1. Review
  2. Scientific opinion on the tolerable upper intake level for vitamin E.EFSA journal. European Food Safety Authority · 2024
    Article
  3. Article
  4. Article
  5. Understanding and Treating Niemann-Pick Type C Disease: Models Matter.International journal of molecular sciences · 2020
    Review
  6. Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Treatment of Niemann--pick type C disease by histone deacetylase inhibitors.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2013
    Review
  16. Review
  17. Oxidative stress: a pathogenic mechanism for Niemann-Pick type C disease.Oxidative medicine and cellular longevity · 2012
    Review
  18. 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

11 authors at 6 institutions in 3 countries.

L UlatowskiDepartment of Nutrition, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.
R Parker
C Davidson
N Yanjanin
T J Kelley
D Corey
J Atkinson
F Porter
H Arai
S U Walkley
D Manor
Case Western Reserve University · USAlbert Einstein College of Medicine · USNational Institutes of Health · USBrock University · CACornell University · USUniversity of Tokyo Health Sciences · JP

Funding

Translational Research in Cystic FibrosisP30DK027651 · NIDDK · CASE WESTERN RESERVE UNIVERSITY · PI DRUMM, MITCHELL L · 1986 to 2014
$15.6M
Inborn Errors of Cholesterol SynthesisZIAHD000139 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI PORTER, FORBES · 2009 to 2019
$11.7M
Endosomal-Lysosomal Function in Neuronal Storage DiseaseR01HD045561 · NICHD · ALBERT EINSTEIN COL OF MED YESHIVA UNIV · PI DOBRENIS, KOSTANTIN, WALKLEY, STEVEN UPSHAW · 2004 to 2021
$6.9M
Clinical Investigations of Niemann-Pick Disease, type CZIAHD008824 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI PORTER, FORBES · 2009 to 2019
$5.2M
Functions of Tocopherol Transfer TroteinR01DK067494 · NIDDK · CORNELL UNIVERSITY ITHACA · PI MANOR, DANNY · 2004 to 2012
$2.8M
Intramural NIH HHSNICHD NIH HHS HD-045561NICHD NIH HHS R01 HD045561NIDDK NIH HHS DK-067494NIDDK NIH HHS P30 DK027651NIDDK NIH HHS R01 DK067494
6 · The paper itself

Abstract

Vitamin E (α-tocopherol) is the major lipid-soluble antioxidant in many species. Niemann-Pick type C (NPC) disease is a lysosomal storage disorder caused by mutations in the NPC1 or NPC2 gene, which regulates lipid transport through the endocytic pathway. NPC disease is characterized by massive intracellular accumulation of unesterified cholesterol and other lipids in lysosomal vesicles. We examined the roles that NPC1/2 proteins play in the intracellular trafficking of tocopherol. Reduction of NPC1 or NPC2 expression or function in cultured cells caused a marked lysosomal accumulation of vitamin E in cultured cells. In vivo, tocopherol significantly accumulated in murine Npc1-null and Npc2-null livers, Npc2-null cerebella, and Npc1-null cerebral cortices. Plasma tocopherol levels were within the normal range in Npc1-null and Npc2-null mice, and in plasma samples from human NPC patients. The binding affinity of tocopherol to the purified sterol-binding domain of NPC1 and to purified NPC2 was significantly weaker than that of cholesterol (measurements kindly performed by R. Infante, University of Texas Southwestern Medical Center, Dallas, TX). Taken together, our observations indicate that functionality of NPC1/2 proteins is necessary for proper bioavailability of vitamin E and that the NPC pathology might involve tissue-specific perturbations of vitamin E status.

Indexed as

Allelesalpha-TocopherolAnimalsBiological TransportCarrier ProteinsCell LineExtracellular SpaceFibroblastsGene Expression RegulationGene Knockdown TechniquesGlycoproteinsHepatocytesHumansIntracellular Signaling Peptides and ProteinsLigandsLysosomesalpha-TocopherolCarrier ProteinsGlycoproteinsIntracellular Signaling Peptides and ProteinsLigandsMembrane GlycoproteinsNiemann-Pick C1 ProteinNPC1 protein, humanNPC2 protein, humanVesicular Transport Proteins

Identifiers

PMID21550990
PMCPMC3122910
OpenAlexW2169824691

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.