Evidence map›Paper›PMID 17623044›Full record

ArticleJournal of neurochemistry2007

Distribution of sphingosine kinase activity and mRNA in rodent brain.

Nicolas Blondeau, Yushuan Lai, Sarah Tyndall, Margherita Popolo, Kamil Topalkara, James K Pru, Ling Zhang, Hyunghwan Kim, James K Liao, Kan Ding and 1 more

Open access · greenAbstract read
In one paragraph

Article in Journal of neurochemistry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 17% 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

59 citing papers in PubMed, 1 synthesis or guideline pooled it, 100 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Arachnoid membrane as a source of sphingosine-1-phosphate that regulates mouse middle cerebral artery tone.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  11. HDL and Endothelial Function.Advances in experimental medicine and biology · 2022
    Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Review
  20. Review
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 2 institutions in 1 country.

Nicolas BlondeauStroke and Neurovascular Regulation Laboratory, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA.
Yushuan Lai
Sarah Tyndall
Margherita Popolo
Kamil Topalkara
James K Pru
Ling Zhang
Hyunghwan Kim
James K Liao
Kan Ding
Christian Waeber
Massachusetts General Hospital · USHarvard University · US

Funding

LIPOPROTEINS EFFECTS ON G PROTEIN FUNCTIONR01HL052233 · NHLBI · UNIVERSITY OF CHICAGO · PI LIAO, JAMES KUANG-JAN · 1995 to 2016
$5.3M
Activation of eNOS by Steroid HormonesR01HL070274 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI LIAO, JAMES KUANG-JAN · 2002 to 2006
$2.2M
Neuron-Dervied S1P and Endothelial Function in StrokeR01NS049263 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI WAEBER, CHRISTIAN · 2006 to 2010
$1.9M
Role of PI3-Kinase in Estrogen-induced eNOS ActivationR01DK062729 · NIDDK · BRIGHAM AND WOMEN'S HOSPITAL · PI LIAO, JAMES KUANG-JAN · 2003 to 2007
$1.9M
Endothelial Akt in Vascular InjuryR01HL080187 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI LIAO, JAMES KUANG-JAN · 2006 to 2009
$1.6M
Role of protein kinase Akt in cerebral ischemiaP01NS010828 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI MOSKOWITZ, MICHAEL A. · 1989 to 2008
$1.4M
Sphingosine-1-phosphate-activated telomerase in strokeR21NS052195 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI WAEBER, CHRISTIAN · 2005 to 2006
$437k
NHLBI NIH HHS R01 HL052233NHLBI NIH HHS R01 HL070274NHLBI NIH HHS R01 HL080187NIDDK NIH HHS R01 DK062729NINDS NIH HHS NS049263NINDS NIH HHS NS052195NINDS NIH HHS P01 NS010828NINDS NIH HHS R01 NS049263NINDS NIH HHS R21 NS052195
6 · The paper itself

Abstract

Sphingosine-1-phosphate (S1P) is a lipid mediator that exerts multiple cellular functions through activation of a subfamily of G-protein-coupled receptors. Although there is evidence that S1P plays a role in the developing and adult CNS, little is known about the ability of brain parenchyma to synthesize this lipid. We have therefore analyzed the brain distribution of the enzymatic activity of the S1P synthesizing enzyme, sphingosine kinase (SPHK) [EC:2.7.1.91], as well as mRNA distribution for one of the two isoforms of this enzyme, sphingosine kinase 2. SPHK activity, measured by the conversion of [(3)H]sphingosine to [(3)H]S1P, is highest in cerebellum, followed by cortex and brainstem. Lowest activities were found in striatum and hippocampus. Sensitivity to 0.1% Triton-X suggests that this activity is accounted for by SPHK2. RT-PCR and in situ hybridization studies show that mRNA for this isoform has a distribution similar to that of SPHK activity. In vivo and in vitro ischemia increase SPHK activity and SPHK2 mRNA levels. These results indicate that SPHK2 is the predominant S1P-synthesizing isoform in normal brain parenchyma. Its heterogeneous distribution, in particular laminar distribution in cortex, suggests a neuronal localization and a possible role in cortical and cerebellar functions, in normal as well as ischemic brain.

Indexed as

AnimalsBlotting, NorthernBlotting, WesternBrainBrain ChemistryCells, CulturedFemaleGlucoseHypoxia, BrainInfarction, Middle Cerebral ArteryIn Situ HybridizationLysophospholipidsMaleMiceMice, Inbred ICRNeurogliaGlucoseLysophospholipidsPhosphotransferases (Alcohol Group Acceptor)RNA, MessengerSphingosinesphingosine 1-phosphateSphingosine Kinase

Identifiers

PMID17623044
PMCPMC2639651
OpenAlexW1533399240

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.