Evidence map›Paper›PMID 33324946›Full record

ArticleNeurological research and practice2020

Sphingosine 1-phosphate levels in cerebrospinal fluid after subarachnoid hemorrhage.

Anika Männer, Dominique Thomas, Marlies Wagner, Jürgen Konczalla, Helmuth Steinmetz, Robert Brunkhorst, Waltraud Pfeilschifter

Open access · diamondAbstract read
In one paragraph

Article in Neurological research and practice, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 26% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Metabolomic and lipidomic pathways in aneurysmal subarachnoid hemorrhage.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  3. Review
  4. Review
  5. 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
  6. Emerging therapeutic targets for cerebral edema.Expert opinion on therapeutic targets · 2021
    Review
  7. 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

7 authors at 1 institution in 1 country.

Anika MännerFrankfurt University Hospital, Department of Neurology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Dominique ThomasPharmazentrum Frankfurt, Frankfurt University Hospital, Department of Clinical Pharmacology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Marlies WagnerFrankfurt University Hospital, Institute for Diagnostic and Interventional Neuroradiology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Jürgen KonczallaFrankfurt University Hospital, Department of Neurosurgery, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Helmuth SteinmetzFrankfurt University Hospital, Department of Neurology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Robert BrunkhorstFrankfurt University Hospital, Department of Neurology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Waltraud PfeilschifterFrankfurt University Hospital, Department of Neurology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.ORCID 0000-0001-6935-8842
Goethe University Frankfurt · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeSphingosin-1-phosphate (S1P) plays a crucial role as a signaling molecule in the immune system and the vasculature. Previous studies suggested a role as a vasoconstrictor of cerebral arteries via the S1P3-Receptor. Cerebral vasospasm (VS) following aneurysmal subarachnoid hemorrhage (SAH) is a major cause of disability and poor neurological outcome. Early detection of vasospasm could facilitate the prevention of cerebral ischemia in SAH patients. The aim of this prospective case-control study was to characterize the dynamics of S1P in the cerebrospinal fluid (CSF) of patients with SAH in relation to hemorrhage volume, the occurrence of VS, and neurological outcome.

methodsS1P levels in CSF of 18 control subjects and 18 SAH patients with placement of an external ventricular drainage (EVD) were determined by high sensitivity mass spectrometry from day 1 through 14 after SAH onset. Hemorrhage volume, development of asymptomatic vasospasm (aVS) and symptomatic vasospasm (sVS), and neurological outcome were correlated to day 1 S1P levels.

resultsThe intrathecal S1P levels of SAH patients were higher than those of the control subjects, and correlated with hemorrhage volume. There was no significant difference in S1P levels between patients with aVS and those with sVS. S1P levels significantly correlated with neurological outcome on a sliding modified Rankin scale.

conclusionS1P levels were highest directly after placement of the EVD and correlated strongly with hemorrhage volume, which may be caused by the intrathecal clot and subsequent lysis of red blood cells, an important source of S1P. We did not detect a second peak of S1P release over the course of the intensive care period.

Indexed as

Delayed cerebral ischemiaFingolimodNeurological outcomeSphingosine 1-phosphateSubarachnoid hemorrhageVasospasm

Identifiers

PMID33324946
PMCPMC7684722
OpenAlexW3108383366

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Registered trials

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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.