Evidence map›Paper›PMID 26512021›Full record

ArticleThe journal of headache and pain2015

Experimental inflammation following dural application of complete Freund's adjuvant or inflammatory soup does not alter brain and trigeminal microvascular passage.

Cornelia Lundblad, Kristian A Haanes, Gustaf Grände, Lars Edvinsson

Open access · goldAbstract read
In one paragraph

Article in The journal of headache and pain, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

28 citing papers in PubMed, 63 citations in OpenAlex.

  1. Article
  2. Hypothalamic and sex-related hormones in migraine.The journal of headache and pain · 2026
    Review
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  6. Article
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  9. The ultimate guide to the anti-CGRP monoclonal antibodies galaxy.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Review
  10. Article
  11. Review
  12. Article
  13. Role of Neuroinflammation and Blood-Brain Barrier Permutability on Migraine.International journal of molecular sciences · 2021
    Review
  14. Review
  15. The fifth cranial nerve in headaches.The journal of headache and pain · 2020
    Review
  16. Article
  17. Review
  18. Mechanisms of migraine as a chronic evolutive condition.The journal of headache and pain · 2019
    Review
  19. Article
  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

4 authors at 2 institutions in 2 countries.

Cornelia LundbladDepartment of Medicine, Institute of Clinical Sciences, University Hospital, Lund University, 22185, Lund, Sweden.
Kristian A HaanesDepartment of Clinical Experimental Research, Copenhagen University Hospital, Glostrup, Denmark.
Gustaf GrändeDepartment of Medicine, Institute of Clinical Sciences, University Hospital, Lund University, 22185, Lund, Sweden.
Lars EdvinssonDepartment of Medicine, Institute of Clinical Sciences, University Hospital, Lund University, 22185, Lund, Sweden. Lars.Edvinsson@med.lu.se.
Glostrup Hospital · DKLund University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMigraine is a paroxysmal, disabling primary headache that affects 16 % of the adult population. In spite of decades of intense research, the origin and the pathophysiology mechanisms involved are still not fully known. Although triptans and gepants provide effective relief from acute migraine for many patients, their site of action remains unidentified. It has been suggested that during migraine attacks the leakiness of the blood-brain barrier (BBB) is altered, increasing the passage of anti-migraine drugs. This study aimed to investigate the effect of experimental inflammation, following dural application of complete Freund's adjuvant (CFA) or inflammatory soup (IS) on brain and trigeminal microvascular passage.

methodsIn order to address this issue, we induced local inflammation in male Sprague-Dawley-rats dura mater by the addition of CFA or IS directly on the dural surface. Following 2, 24 or 48 h of inflammation we calculated permeability-surface area product (PS) for [(51)Cr]-EDTA in the trigeminal ganglion (TG), spinal trigeminal nucleus, cortex, periaqueductal grey and cerebellum.

resultsWe observed that [(51)Cr]-EDTA did not pass into the central nervous system (CNS) in a major way. However, [(51)Cr]-EDTA readily passed the TG by >30 times compared to the CNS. Application of CFA or IS did not show altered transfer constants.

conclusionsWith these experiments we show that dural IS/CFA triggered TG inflammation, did not increase the BBB passage, and that the TG is readily exposed to circulating molecules. The TG could provide a site of anti-migraine drug interaction with effect on the trigeminal system.

Indexed as

AnimalsCerebellumCerebral CortexDura MaterEdetic AcidFreund's AdjuvantInflammationInflammation MediatorsMaleMigraine DisordersRatsRats, Sprague-DawleyTrigeminal GanglionEdetic AcidFreund's AdjuvantInflammation MediatorsComplete Freund’s AdjuvantInflammatory soupMicrovascular passageTransfer constantTrigeminal ganglion

Identifiers

PMID26512021
PMCPMC4627622
OpenAlexW1940813448

What OpenQuestion holds

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LicenceCC BY
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.