Evidence map›Paper›PMID 34848990›Full record

ArticleJournal of inflammation research2021

IL-6 Quotient (The Ratio of Cerebrospinal Fluid IL-6 to Serum IL-6) as a Biomarker of an Unruptured Intracranial Aneurysm.

Joanna Kamińska, Violetta Dymicka-Piekarska, Robert Chrzanowski, Karol Sawicki, Anna J Milewska, Justyna Zińczuk, Marzena Tylicka, Marek Jadeszko, Zenon Mariak, Ewa M Kratz and 4 more

Open access · goldAbstract read
In one paragraph

Article in Journal of inflammation research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
1.4field-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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
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  8. Elevated Expression ofBiomedicines · 2025
    Article
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  13. Peripheral macrophages in the development and progression of structural cerebrovascular pathologies.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Review
  14. Review
  15. A Future Blood Test to Detect Cerebral Aneurysms.Cellular and molecular neurobiology · 2023
    Review
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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

14 authors at 6 institutions in 3 countries.

Joanna KamińskaDepartment of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, 15-269, Poland.ORCID 0000-0002-2986-4852
Violetta Dymicka-PiekarskaDepartment of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, 15-269, Poland.ORCID 0000-0003-4170-0997
Robert ChrzanowskiDepartment of Neurosurgery, Clinical Hospital of the Medical University of Białystok, Białystok, 15-276, Poland.ORCID 0000-0002-2883-394X
Karol SawickiDepartment of Neurosurgery, Clinical Hospital of the Medical University of Białystok, Białystok, 15-276, Poland.ORCID 0000-0001-7127-850X
Anna J MilewskaDepartment of Statistics and Medical Informatics, Medical University of Białystok, Białystok, 15-295, Poland.ORCID 0000-0001-8028-5146
Justyna ZińczukDepartment of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, 15-269, Poland.ORCID 0000-0003-2391-3307
Marzena TylickaDepartment of Biophysics, Medical University of Białystok, Białystok, 15-089, Poland.ORCID 0000-0002-9594-8173
Marek JadeszkoDepartment of Neurosurgery, Clinical Hospital of the Medical University of Białystok, Białystok, 15-276, Poland.
Zenon MariakDepartment of Neurosurgery, Clinical Hospital of the Medical University of Białystok, Białystok, 15-276, Poland.ORCID 0000-0003-4132-9278
Ewa M KratzDepartment of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wrocław Medical University, Wrocław, 50-556, Poland.ORCID 0000-0003-2948-4574
Joanna Matowicka-KarnaDepartment of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, 15-269, Poland.ORCID 0000-0003-4438-9110
Johannes KornhuberDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsklinikum Erlangen, Erlangen, 91054, Germany.ORCID 0000-0002-8096-3987
Piotr LewczukDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsklinikum Erlangen, Erlangen, 91054, Germany.ORCID 0000-0002-8101-6535
Olga M Koper-LenkiewiczDepartment of Clinical Laboratory Diagnostics, Medical University of Białystok, Białystok, 15-269, Poland.ORCID 0000-0001-5199-2773
Medical University of Silesia · PLMedical University of Warsaw · PLCS Diagnostics · DEFriedrich-Alexander-Universität Erlangen-Nürnberg · DEInstitute of Biophysics · BGMedical University of Białystok · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies conducted so far have focused mainly on the assessment of IL-6 levels in patients with ruptured brain aneurysms. Carrying out detailed studies in patients with un-ruptured brain aneurysms (UIA) would be extremely important, as it would answer the question of whether IL-6 plays also a role in primary aneurysm formation and growth.

methodsIL-6, S100, NSE, and albumin concentrations in 67 UIA patients and 17 individuals without vascular lesions in the brain were tested using in vitro diagnostic immunoassays according to the manufacturers' instructions. IL-6 Quotient was calculated by dividing cerebrospinal fluid (CSF) IL-6 by serum IL-6.

resultsWe showed that IL-6 Quotient was significantly higher in UIA patients (1.78) compared to the control group (0.87; p<0.001). Multivariate logistic regression analysis demonstrated that a growth in IL-6 Quotient increases the probability of UIA diagnosis. In UIA patients CSF IL-6 concentration was significantly higher (4.55 pg/ml) compared to the serum concentration (2.39 pg/ml; p<0.001). In both the study and control group, the blood-brain barrier was intact, thus the CSF-blood gradient of the IL-6 concentration in UIA patients was likely to be the expression of local synthesis of the cytokine within the central nervous system. Patients with multiple brain aneurysms had significantly higher CSF IL-6 levels (5.08 pg/ml) compared to individuals with a single aneurysm (4.14 pg/ml; p=0.0227).

conclusionThis totality of the may suggest IL-6 as a biomarker for UIA formation; however, further studies are needed to unequivocally confirm clinical application of IL-6 concentration evaluation.

Indexed as

cerebrospinal fluidCSFIL-6IL-6 Quotientinterleukin 6UIAunruptured intracranial aneurysm

Identifiers

PMID34848990
PMCPMC8627317
OpenAlexW3216181884

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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.