Evidence map›Paper›PMID 31264696›Full record

ArticleNeurosurgery2020

Interleukin-6 Promotes Murine Estrogen Deficiency-Associated Cerebral Aneurysm Rupture.

Daisuke Wajima, Siham Hourani, William Dodd, Devan Patel, Chad Jones, Kartik Motwani, Hanain Z Fazal, Koji Hosaka, Brian L Hoh

Open access · greenAbstract read
In one paragraph

Article in Neurosurgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
1.6field-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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. A Future Blood Test to Detect Cerebral Aneurysms.Cellular and molecular neurobiology · 2023
    Review
  14. Article
  15. Article
  16. Understanding the genetics of intracranial aneurysms: A primer.Clinical neurology and neurosurgery · 2022
    Review
  17. Article
  18. Why Are Women Predisposed to Intracranial Aneurysm?Frontiers in cardiovascular medicine · 2022
    Review
  19. Article
  20. Interleukin 6 and Aneurysmal Subarachnoid Hemorrhage. A Narrative Review.International journal of molecular sciences · 2021
    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

9 authors at 3 institutions in 2 countries.

Daisuke WajimaDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
Siham HouraniDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
William DoddDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
Devan PatelCollege of Medicine, Florida State University, Tallahassee, Florida.
Chad JonesDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
Kartik MotwaniDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
Hanain Z FazalDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
Koji HosakaDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
Brian L HohDepartment of Neurosurgery, University of Florida, Gainesville, Florida.
University of Florida · USNara Medical University · JPFlorida State University · US

Funding

Cerebral Aneurysm Healing: Cellular Mediators, Mechanisms, and Downstream ActionsR01NS083673 · NINDS · UNIVERSITY OF FLORIDA · PI HOH, BRIAN LIM · 2014 to 2018
$1.6M
Inflammatory Mediators and Mechanisms of Cerebral Aneurysm Formation and RuptureR01NS110710 · NINDS · UNIVERSITY OF FLORIDA · PI HOH, BRIAN LIM · 2020 to 2023
$1.4M
NINDS NIH HHS R01 NS083673NINDS NIH HHS R01 NS110710
6 · The paper itself

Abstract

backgroundEstrogen deficiency is associated with cerebral aneurysm rupture, but the precise mechanism is unknown.

objectiveTo test the hypothesis that IL-6 is required for the increase in aneurysm rupture rate observed in estrogen-deficient mice.

methodsWe analyzed IL-6 expression in human cerebral aneurysms. We induced cerebral aneurysms in estrogen-deficient female C57BL/6 mice that had undergone 4-vinylcyclohexene diepoxide (VCD) treatment or bilateral ovariectomy (OVE). Mice were blindly randomized to selective IL-6 inhibition (IL-6 receptor [IL-6R] neutralizing antibody, n = 25) or control (isotype-matched IgG, n = 28). Murine cerebral arteries at the circle of Willis were assessed for aneurysm rupture and macrophage infiltration.

resultsIL-6 is expressed in human cerebral aneurysms, but not in control arteries. Serum IL-6 is elevated in ovariectomized female mice compared to sham control (14.3 ± 1.7 pg/mL vs 7.4 ± 1.5 pg/mL, P = .008). Selective IL-6R inhibition suppressed cerebral aneurysm rupture in estrogen-deficient mice compared with control (VCD: 31.6% vs 70.0%, P = .026; OVE: 28.6% vs 65.2%, P = .019). IL-6R inhibition had no effect on formation or rupture rate in wild-type mice. IL-6R neutralizing antibody significantly reduced macrophage infiltration at the circle of Willis (1.9 ± 0.2 vs 5.7 ± 0.6 cells/2500 μm2; n = 8 vs n = 15; P < .001).

conclusionIL-6 is increased in the serum of estrogen-deficient mice and appears to play a role in promoting murine estrogen deficiency-associated cerebral aneurysm rupture via enhanced macrophage infiltration at the circle of Willis. Inhibition of IL-6 signaling via IL-6 receptor neutralizing antibody inhibits aneurysm rupture in estrogen-deficient mice. IL-6 receptor inhibition had no effect on aneurysm formation or rupture in wild-type animals.

Indexed as

Aneurysm, RupturedAnimalsDisease Models, AnimalEstrogensFemaleHumansInterleukin-6Intracranial AneurysmMiceMice, Inbred C57BLOvariectomyEstrogensInterleukin-6Aneurysm ruptureCerebral aneurysmEstrogen deficiencyIL-6 (interleukin 6)Murine aneurysm mode

Identifiers

PMID31264696
PMCPMC7317988
OpenAlexW2954797653

What OpenQuestion holds

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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.