Evidence map›Paper›PMID 31369637›Full record

ArticlePloS one2019

Right-to-left shunts and hormonal therapy influence cerebral vasomotor reactivity in patients with migraine with aura.

Claudia Altamura, Matteo Paolucci, Nicoletta Brunelli, Angelo Cascio Rizzo, Gianluca Cecchi, Federica Assenza, Mauro Silvestrini, Fabrizio Vernieri

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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

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

  1. Profiling cerebrovascular function in migraine: A systematic review and meta-analysis.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Pooled it
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  14. Pathophysiological Bases of Comorbidity in Migraine.Frontiers in human neuroscience · 2021
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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

8 authors at 2 institutions in 1 country.

Claudia AltamuraClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.ORCID 0000-0002-5934-5535
Matteo PaolucciClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.
Nicoletta BrunelliClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.
Angelo Cascio RizzoClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.
Gianluca CecchiClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.
Federica AssenzaClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.
Mauro SilvestriniNeurological Clinic, Department of Experimental and Clinical Medicine, Marche Polytechnic University, Ancona, Italy.
Fabrizio VernieriClinical Neurology, Headache and Neurosonology Unit, Campus Bio-Medico University of Rome, Roma, Italy.
Università Campus Bio-Medico · ITMarche Polytechnic University · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Patent Foramen Ovale and impaired cerebral hemodynamics were proposed among the pathophysiological mechanisms explaining the increased risk for stroke in patients with Migraine with Aura (MA). Our study aimed at comparing the vasomotor reactivity (VMR) of the anterior and the posterior cerebral circulation in patients with Migraine with Aura, in patients with acute vascular ischemic accidents, and in controls. We hypothesized that VMR in MA patients is preserved in the anterior circulation and reduced in the posterior circulation. We prospectively assessed with Transcranial Doppler the vasomotor reactivity to breath holding of the Middle and Posterior Cerebral Arteries (MCA, PCA) in MA patients, in acute vascular patients and healthy controls. We also evaluated the possible effect of clinical characteristics of MA (attack frequency, aura length or type, disease history), vascular factors and the presence of right-to-left shunt on VMR. Diverging from our hypothesis, MA patients displayed a higher breath-holding index (BHI) than controls in the MCA (1.84±0.47%/s vs 1.53±0.47%/s, p = .001) as well as in the PCA (1.87±0.65%/s vs 1.47±0.44%/s, p < .001). In MA patients, MCA BHI was higher in those with large right-to-left shunts (2.09±0.42 vs 1.79±0.47, p = .046) and lower in those taking estrogens (1.30±0.30%/s vs 1.9±0.45%/s, p = .009). We did not observe an effect of MA characteristics on BHI. The increased BHI in MA patients with large right-to-left shunts could be explained by the vasoactive effect in the cerebral circulation of substances bypassing the deactivating pulmonary filters or by a constitutional trait of the vascular system associating persistent right-to-left shunts and hyper-reactive hemodynamics. Our results discourage the hypothesis that altered hemodynamics contribute to increasing the stroke risk in all MA patients. However, estrogens can lower VMR, curtailing the hemodynamic resources of MA patients.

Indexed as

Cerebrovascular CirculationAdultBreath HoldingCase-Control StudiesEstrogensFemaleForamen Ovale, PatentHumansMaleMiddle AgedMigraine with AuraStrokeUltrasonography, Doppler, TranscranialVasomotor SystemEstrogens

Identifiers

PMID31369637
PMCPMC6675040
OpenAlexW2965683187

What OpenQuestion holds

Textmetadata
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.